Fuel processing system and ship including same

Abstract

The fuel processing system according to one embodiment of the present invention comprises: a fuel flow unit which supplies fuel to a consumer; a fuel collection unit which treats, by means of a cleaning agent, fuel discharged from the consumer or the fuel flow unit; and a reducing-agent storage unit which stores a reducing agent for treating exhaust gas discharged from the consumer, wherein the fuel collection unit transfers at least some of the wastewater stored in the fuel collection unit to the reducing-agent storage unit.

Description

Fuel processing system and ship including the same

[0001] The present invention relates to a fuel processing system and a ship including the same.

[0002] Air pollution is becoming severe worldwide and is causing climate change. Because pollutants emitted from ships have a significant impact on air quality, the International Maritime Organization (IMO), the European Union, and the United States are strengthening regulations on pollutants emitted from vessels to reduce air pollution.

[0003] As regulations on greenhouse gas emissions from ships are gradually strengthened at key milestones by 2050, it is expected that it will be difficult to comply with pollution regulations using only existing engines and fuels.

[0004] Therefore, with the application of strengthened regulations on greenhouse gas emissions from ships, the use of existing fossil fuels is expected to become difficult, making it urgent to identify alternative fuels capable of meeting future stricter regulations. As alternatives, non-fossil fuels such as ammonia (NH3), biofuels, solar energy, and wind energy are currently being considered.

[0005] Among these, ammonia is a chemical that can be produced, stored, transported, and supplied, and ammonia-fueled ships are being developed. Ammonia fuel can be supplied to engines, and at least a portion of the supplied fuel can be recovered.

[0006] When the engine is stopped, any ammonia fuel remaining in the engine and the lines connecting to it can be collected. Since the collected ammonia fuel is toxic, it must be disposed of safely. Furthermore, it is desirable to prevent fuel waste by reusing the ammonia fuel treated in this manner.

[0007] The present invention was created to solve the problems of the prior art as described above, and aims to provide a fuel processing system that recovers fuel from an engine or fuel supply unit and processes the recovered fuel stably and efficiently, and a ship including the same.

[0008] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0009] A fuel treatment system according to one aspect of the present invention comprises: a fuel flow unit that supplies fuel to a demand location; a fuel collection unit that treats fuel discharged from the demand location or the fuel flow unit using a cleaning agent; and a reducing agent storage unit that stores a reducing agent for treating exhaust gas discharged from the demand location; wherein the fuel collection unit transfers at least a portion of the wastewater stored in the fuel collection unit to the reducing agent storage unit.

[0010] Specifically, the fuel collection unit may transfer at least a portion of the wastewater stored in the fuel collection unit to the reducing agent storage unit depending on whether the demand source is operated in a pollution control area.

[0011] Specifically, the fuel collection unit can transfer at least a portion of the wastewater stored in the fuel collection unit to the reducing agent storage unit when the demand source is operated in a non-pollution control area.

[0012] Specifically, it includes an exhaust treatment unit that chemically treats pollutants contained in exhaust gas emitted from the above-mentioned demand source; and the fuel collection unit can transfer at least a portion of the wastewater stored in the fuel collection unit to the exhaust treatment unit when the above-mentioned demand source is operated in a pollution control area.

[0013] Specifically, it may include a wastewater heat exchanger that controls the temperature of wastewater transferred from the fuel collection unit to the exhaust treatment unit.

[0014] Specifically, the system includes an ion removal unit that removes ionic substances contained in wastewater stored in the fuel collection unit; and the reducing agent storage unit can store wastewater from which ionic substances have been removed by the ion removal unit.

[0015] Specifically, it includes a wastewater treatment unit that treats wastewater stored in the fuel collection unit; and the wastewater treatment unit may include a heat treatment unit that heats the wastewater to separate the fuel.

[0016] Specifically, it may include a reheating unit for heat treating wastewater from which fuel has been separated in the heat treatment unit; a degassing unit for degassing wastewater from which fuel has been separated in the heat treatment unit; a biological treatment unit for biologically treating wastewater from which fuel has been separated in the heat treatment unit; or a membrane treatment unit provided with a membrane that selectively permeates fuel contained in wastewater from which fuel has been separated in the heat treatment unit.

[0017] Specifically, wastewater treated in the reheating unit, the degassing unit, the bio-treatment unit, or the membrane treatment unit can be supplied to the fuel collection unit.

[0018] Specifically, it may include a location verification unit that verifies location information where the demand source is operating using a satellite; and a pollution control zone determination unit that determines whether the demand source is located in a pollution control zone based on the location information where the demand source is operating.

[0019] A vessel according to one embodiment of the present invention may include the fuel processing system.

[0020] The fuel processing system according to the present invention and the vessel including the same can safely recover fuel using a cleaning agent and efficiently separate fuel from the processing liquid to store or reuse the fuel.

[0021] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0022] FIG. 1 is a conceptual diagram of a fuel processing system according to a first embodiment of the present invention.

[0023] FIG. 2 is a conceptual diagram of a fuel processing system according to a second embodiment of the present invention.

[0024] FIG. 3 is a conceptual diagram of a fuel processing system according to a third embodiment of the present invention.

[0025] FIG. 4 is a conceptual diagram of a fuel processing system according to a fourth embodiment of the present invention.

[0026] FIG. 5 is a conceptual diagram of a fuel processing system according to the fifth embodiment of the present invention.

[0027] FIG. 6 is a conceptual diagram of a fuel processing system according to the sixth embodiment of the present invention.

[0028] FIG. 7 is a conceptual diagram of a fuel processing system according to the seventh embodiment of the present invention.

[0029] FIG. 8 is a conceptual diagram of a fuel processing system according to the eighth embodiment of the present invention.

[0030] FIG. 9 is a conceptual diagram of a fuel processing system according to the ninth embodiment of the present invention.

[0031] FIG. 10 is a conceptual diagram of a fuel processing system according to the 10th embodiment of the present invention.

[0032] FIG. 11 is a conceptual diagram of a fuel processing system according to the 11th embodiment of the present invention.

[0033] FIG. 12 is a conceptual diagram of a fuel processing system according to the 12th embodiment of the present invention.

[0034] FIG. 13 is a conceptual diagram of a fuel processing system according to the 13th embodiment of the present invention.

[0035] FIG. 14 is a conceptual diagram of a fuel processing system according to the 14th embodiment of the present invention.

[0036] FIG. 15 is a conceptual diagram of a fuel processing system according to the 15th embodiment of the present invention.

[0037] FIG. 16 is a conceptual diagram of a fuel processing system according to the 16th embodiment of the present invention.

[0038] FIG. 17 is a conceptual diagram of a fuel processing system according to the 17th embodiment of the present invention.

[0039] FIG. 18 is a conceptual diagram of a fuel processing system according to the 18th embodiment of the present invention.

[0040] FIG. 19 is a conceptual diagram of a fuel processing system according to the 19th embodiment of the present invention.

[0041] FIG. 20 is a conceptual diagram of a fuel processing system according to the 20th embodiment of the present invention.

[0042] FIG. 21 is a conceptual diagram of a fuel processing system according to the 21st embodiment of the present invention.

[0043] FIG. 22 is a conceptual diagram of a fuel processing system according to the 22nd embodiment of the present invention.

[0044] FIG. 23 is a conceptual diagram of a fuel processing system according to the 23rd embodiment of the present invention.

[0045] FIG. 24 is a conceptual diagram of a fuel processing system according to the 24th embodiment of the present invention.

[0046] FIG. 25 is a conceptual diagram of a fuel processing system according to the 25th embodiment of the present invention.

[0047] FIG. 26 is a conceptual diagram of a fuel processing system according to the 26th embodiment of the present invention.

[0048] FIG. 27 is a conceptual diagram of a fuel processing system according to the 27th embodiment of the present invention.

[0049] The objects, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments in conjunction with the accompanying drawings. It should be noted that in assigning reference numerals to the components of each drawing in this specification, identical components are assigned the same number whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions would unnecessarily obscure the essence of the invention.

[0050] In addition, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0051] Additionally, terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0052] In the present invention, the (gas) fuel may be a substance having a boiling point lower than room temperature at atmospheric pressure and capable of being converted into energy. For example, the fuel may include, but is not limited to, toxic ammonia, liquefied petroleum gas, liquefied natural gas, ethane, etc. However, for convenience, the fuel will be described below as being limited to ammonia.

[0053] In the drawings of the present invention, straight lines represent flow paths through which various fluids, such as fuel, refrigerant, heat transfer fluid, or purging gas, move, and can be interpreted as pipelines. Furthermore, in the present invention, pressure sensors (PT), temperature sensors (TT), flow sensors (FT), etc., may be installed at appropriate locations without limitation, and the measured values ​​from each sensor may be used in various ways without limitation for the operation of the components described below.

[0054] In addition, the present invention includes a vessel equipped with a fuel processing system described below. The vessel is a concept that includes gas carriers, merchant vessels carrying various cargo or people, FSRUs, FPSOs, bunkering vessels, offshore plants, etc.

[0055] In this specification, fuel may encompass gaseous fuel or liquid fuel. Additionally, fuel may refer to a fuel solution in which fuel is dissolved in a cleaning agent, or may refer to a mixture of fuel and foreign substances or impurities. For example, fuel may refer to ammonia water in which ammonia fuel is dissolved in water which is the cleaning agent.

[0056] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0057]

[0058] FIG. 1 is a conceptual diagram of a fuel processing system according to a first embodiment of the present invention.

[0059] Referring to FIG. 1, a fuel processing system (1) according to a first embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); and a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent. The fuel collection unit (500) comprises: a first fuel collection unit (510a) that stores a cleaning agent inside; and a second fuel collection unit (510b) that is connected to the first fuel collection unit (510a) and sprays a cleaning agent inside. Fuel discharged from the demand place (200) or the fuel flow unit (100) is injected into the cleaning agent of the first fuel collection unit (510a), and the spraying of the cleaning agent of the second fuel collection unit (510b) is controlled according to the stopping condition of the demand place (200).

[0060] The fuel flow unit (100) may include a fuel supply recovery unit (110) that supplies fuel to a demand location (200) and recovers fuel from the demand location (200), and a fuel valve unit (120) that controls the flow of fuel supplied to or recovered from the demand location (200).

[0061] The fuel supply recovery unit (110) may include a fuel supply unit (110a) that supplies fuel to the demand location (200) and a fuel recovery unit (110b) that recovers fuel from the demand location (200). The fuel supply unit (110a) may supply fuel from the storage unit (300) to the demand location (200). The fuel supply unit (110a) may supply liquid fuel among the fuel stored in the storage unit (300) to the demand location (200). The fuel supply unit (110a) may process the fuel according to the specifications of the demand location (200) and supply it to the demand location (200).

[0062] Inert gas, purging gas, cleaning agent, etc. may be supplied to the fuel flow unit (100) for fuel recovery of the fuel recovery unit (110b). Specifically, an inert gas supply unit (not shown) that supplies inert gas to the fuel flow unit (100), a purging gas supply unit (not shown) that supplies purging gas, or a recovery cleaning agent supply unit (not shown) that supplies cleaning agent may be provided. Preferably, the inert gas supply unit, the purging gas supply unit, or the recovery cleaning agent supply unit may be provided upstream or downstream of the demand source (200). At least a portion of the fuel supply recovery unit (110) may be provided within a fuel preparation room provided inside the vessel.

[0063] The demand source (200) and the storage unit (300) may be connected by a fuel supply line (L10). The fuel supply unit (110a) may include the fuel supply line (L10). A pump or heat exchanger, etc., may be provided on the fuel supply line (L10).

[0064] The upstream fuel supply line (L10) or downstream fuel recovery line (L20) of the demand source (200) may have a double-pipe structure. Even if fuel leakage occurs in the fuel supply line (L10) or fuel recovery line (L20), the spread of the fuel leakage can be prevented.

[0065] The above fuel supply line (L10) may be branched to form a storage line (L11). The storage line (L11) can return fuel withdrawn from the storage unit (300) to the storage unit (300). At this time, the fuel may be returned after processing such as heating, vaporization, cooling, supercooling, or re-liquefaction.

[0066] The demand source (200) may be a single-fuel engine using a specific fuel or a multi-fuel engine using various types of fuel. In this specification, the demand source (200) is interpreted as an engine that obtains energy by consuming ammonia, encompassing turbines, etc. Specifically, the demand source (200) may be a device that converts the chemical energy of ammonia fuel into energy such as electrical, thermal, or mechanical energy. For example, the demand source (200) includes various consumption sources such as fuel cells and boilers.

[0067] The storage unit (300) stores fuel. The fuel can be used as fuel consumed by a demand source (200), such as an engine. A number of types of fuel can be used.

[0068] The storage unit (300) stores fuel in a liquid state, and for this purpose, insulation may be applied to at least one side of the interior or exterior of the storage unit (300). Additionally, the storage unit (300) can prevent the vaporization of fuel by storing ammonia at high pressure. Furthermore, the storage unit (300) stores fuel at high pressure so that the fuel withdrawal pump (310), which will be described later, can be reduced in size or omitted.

[0069] The storage unit (300) may be provided to form a cargo hold inside the ship. Additionally, the storage unit (300) may be provided independently inside the ship or on the deck. One or more storage units (300) may be provided. Fuel from multiple storage units (300) may be consumed selectively or simultaneously.

[0070] The above storage unit (300) can store cargo. For example, the above storage unit (300) can store ammonia as cargo. In this case, the cargo stored in the above storage unit (300) can be used as fuel.

[0071] A bunkering station (not shown) or a cargo manifold (not shown) may be connected to the storage unit (300). The bunkering station delivers fuel to the storage unit (300) from an external fuel source. The external fuel source may be a land-based supply source or a bunkering vessel at sea, etc. The cargo manifold delivers cargo to the storage unit (300) from an external cargo supply source.

[0072] The storage unit (300) may include at least one of a device that heats or vaporizes the fuel inside the storage unit (300) and returns it to the storage unit (300), a device that cools or supercools the fuel inside the storage unit (300) and returns it to the storage unit (300), or a device that re-liquefies the gaseous fuel inside the storage unit (300) and returns it to the storage unit (300).

[0073] Fuel from the storage unit (300) can be withdrawn to the fuel supply unit (110a). The fuel withdrawal pump (310) can withdraw fuel from the storage unit (300) to the fuel supply unit (110a). The fuel withdrawal pump (310) may be provided inside the storage unit (300), but the present invention is not limited thereto. The fuel withdrawal pump (310) may be provided as a fixed-displacement pump or a variable-displacement (VFD) pump, etc.

[0074] The fuel withdrawal pump (310) may be placed within the storage unit (300), but unlike the drawing, it may also be placed downstream of the storage unit (300). Furthermore, as previously explained, the fuel withdrawal pump (310) may be omitted depending on the type and internal pressure of the storage unit (300).

[0075] Unlike in the drawing, the fuel withdrawal pumps (310) may be provided in multiple units to form a structure capable of mutual backup, and the multiple fuel withdrawal pumps (310) may be provided to operate simultaneously and share the load. Alternatively, multiple fuel withdrawal pumps (310) may be provided in series to utilize a multi-stage pressurization method.

[0076] The fuel supply unit (110a) includes a supply heat exchanger (111) and a fuel supply pump (112). The supply heat exchanger (111) controls the temperature of the fuel. The supply heat exchanger (111) may be provided upstream of the fuel supply pump (112), that is, between the fuel withdrawal pump (310) and the fuel supply pump (112). Additionally, the supply heat exchanger (111) may be provided downstream of the fuel supply pump (112), and may be provided upstream and downstream of the fuel supply pump (112), respectively. The supply heat exchanger (111) can control the temperature of the fuel to correspond to the required temperature of the demand location (200) using an unrestricted heat medium such as glycol water (GW), seawater, fresh water, steam, etc.

[0077] The supply heat exchanger (111) may be a heater that heats fuel. The supply heat exchanger (111) may heat fuel stored in the storage unit (300). Specifically, the supply heat exchanger (111) may control the temperature of the fuel in the storage unit (300) so that when fuel recovered from the demand source (200) and the fuel in the storage unit (300) are mixed, the temperature of the mixed fuel becomes higher than the pour point of the sealing oil. Thus, the supply heat exchanger (111) can maintain the fluidity of the sealing oil at the demand source (200), etc.

[0078] Preferably, the supply heat exchanger (111) may be provided upstream of the point where the fuel recovery line (L20) is connected to the fuel supply line (L10). Thus, the supply heat exchanger (111) can control the temperature of the fuel in the storage unit (300) before the fuel in the fuel recovery line (L20) and the fuel in the storage unit (300) are mixed. Therefore, it is possible to prevent the loss of fluidity of the sealing oil when the fuel in the fuel recovery line (L20) and the fuel in the storage unit (300) are mixed.

[0079] In addition, generally, the required temperature of the demand location (200) is higher than the storage temperature of the storage unit (300) (below the fuel boiling point at atmospheric pressure), and since the temperature rise generated when pressurizing the fuel withdrawal pump (310) and the fuel supply pump (112) alone is insufficient to meet the required temperature of the demand location (200), a supply heat exchanger (111) may be used.

[0080] However, the supply heat exchanger (111) is provided upstream of the fuel supply pump (112) so as to appropriately control the temperature of the fuel to prevent the fuel gas from flowing into the fuel supply pump (112). At this time, the supply heat exchanger (111) controls the heating temperature of the fuel by taking into account that the fuel is recovered by the fuel recovery unit (110b).

[0081] The supply heat exchanger (111) is supplied with a heat transfer medium so that the heat transfer medium can be used to heat the fuel. That is, the supply heat exchanger (111) can be configured to mutually heat exchange the heat transfer medium and the fuel.

[0082] Alternatively, the supply heat exchanger (111) may be a water bath type heater through which fuel passes inside a water bath containing water. In this case, the water bath type heater may be a water bath type steam heater that heats the water inside with steam, or a water bath type electric heater that heats the water inside with electricity.

[0083] The fuel supply pump (112) pressurizes the fuel pressurized by the fuel withdrawal pump (310) to correspond to the required pressure of the demand location (200). One or more fuel supply pumps (112) may be provided in series or in parallel, as described in the fuel withdrawal pump (310).

[0084] The fuel supply pump (112) may be provided as a variable capacity type, and the load may be varied according to the measurement value of a flow meter that may be provided between the fuel withdrawal pump (310) and the fuel supply pump (112). At this time, the flow meter may be provided at a position that reflects the flow rate of fuel recovered by the fuel recovery unit (110b).

[0085] The fuel recovery unit (110b) described later can transfer fuel discharged from the demand source (200) to the fuel supply pump (112), but the fuel supply pump (112) is not desirable for gaseous inflow due to its specifications. Therefore, it is required that the fuel upstream of the fuel supply pump (112) exist only in a liquid state, and to this end, the temperature and pressure upstream of the fuel supply pump (112) can be effectively controlled.

[0086] For example, the fuel recovered by the fuel recovery unit (110b) can be cooled, and the fuel pressure upstream of the fuel supply pump (112) can be maintained high to raise the boiling point of the fuel and suppress vaporization.

[0087] The fuel valve section (120) may be provided upstream or downstream of the demand source (200). The fuel valve section (120) may include a fuel supply valve provided upstream of the demand source (200) to regulate the fuel supply flow rate, etc., and a fuel return valve provided downstream of the demand source (200) to regulate the fuel return flow rate, etc. The fuel valve section (120) may be a fuel valve train (FVT), the fuel supply valve may be a fuel supply valve train (SVT), and the fuel return valve may be a fuel return valve train (RVT).

[0088] The fuel recovery unit (110b) can recover fuel from the demand source (200) or the fuel flow unit (100), etc., when the demand source (200) stops operating. For example, the fuel recovery unit (110b) can recover fuel when the demand source (200) is stopped normally due to regular maintenance, termination of normal operation, etc., and can recover fuel when the demand source (200) is stopped in an emergency due to fuel leakage, fire, overheating, explosion, etc.

[0089] Additionally, the fuel recovery unit (110b) can recover fuel returned from the demand source (200) where excess flow is supplied, but the present invention is not limited thereto.

[0090] At this time, the surplus fuel may be discharged from the demand location (200) after passing through at least a part of the demand location (200), in which case oil or foreign substances used within the demand location (200) may be mixed into the fuel. Therefore, the surplus fuel discharged from the demand location (200) is in a contaminated state, and when the recovered fuel is returned to the storage unit (300), the fuel in the storage unit (300) may be contaminated.

[0091] However, since this surplus fuel is in a state where it can be consumed at the demand location (200), the fuel recovery unit (110b) transfers the surplus fuel discharged from the demand location (200) to the fuel supply unit (110a). Specifically, the fuel recovery unit (110b) can transfer the surplus fuel from the fuel supply unit (110a) to the fuel supply pump (112). This transfer of fuel is carried out by the fuel recovery line (L20). The fuel recovery line (L20) may be provided with a recovery heat exchanger (113) or a collecting tank (114), etc.

[0092] The recovery heat exchanger (113) cools the fuel discharged from the demand location (200). Since the fuel has passed through the demand location (200), it may be in a state heated by the heat generated by the demand location (200). The fuel passing through the demand location (200) may have a temperature higher than the required temperature of the demand location (200). The recovery heat exchanger (113) can lower the temperature of the overheated fuel to adjust the temperature of the fuel to the required temperature of the demand location (200) and deliver it to the demand location (200).

[0093] Additionally, if the heated fuel is returned as is and flows into the fuel supply pump (112), it may cause the inflow of gaseous fuel into the fuel supply pump (112). Therefore, the recovery heat exchanger (113) cools the fuel with fresh water or the like and transfers it from the fuel supply section (110a) to the fuel withdrawal pump (310) and the fuel supply pump (112), thereby suppressing the inflow of gaseous fuel into the fuel supply pump (112).

[0094] The supply heat exchanger (111) and the recovery heat exchanger (113) can be integrated. Specifically, the supply heat exchanger (111) and the recovery heat exchanger (113) are integrated into a single heat exchanger, so that the integrated heat exchanger can control the temperature of the fuel in the fuel supply line (L10) and the fuel in the fuel recovery line (L20) within a single housing (not shown). For example, the integrated heat exchanger can heat the fuel in the fuel supply line (L10) and cool the fuel in the fuel recovery line (L20).

[0095] The supply heat exchanger (111) and the recovery heat exchanger (113) may share a heat medium. Additionally, the integrated heat exchanger may heat exchange the fuel of the fuel recovery line (L20) and the fuel of the fuel supply line (L10), but the present invention is not limited thereto.

[0096] Preferably, the fuel in the fuel recovery line (L20) and the fuel in the fuel supply line (L10) can be mixed after their temperatures are controlled by the integrated heat exchanger. Thus, the temperature of the sealing oil in the fuel recovery line (L20) can be prevented from dropping below its pour point.

[0097] The integrated heat exchanger may be provided upstream of the point where the fuel recovery line (L20) is connected to the fuel supply line (L10).

[0098] A collecting tank (114) is provided in parallel with a part of the fuel recovery line (L20) and temporarily stores fuel. The collecting tank (114) is branched and connected upstream of the fuel supply pump (112) based on the flow of fuel delivered from the demand source (200) to the fuel supply pump (112). The collecting tank (114) can store at least a portion of the fuel returned from the demand source (200) and separate the gas and liquid, thereby preventing the gaseous phase from flowing into the fuel supply pump (112). Specifically, the collecting tank (114) can separate the inert gas and fuel used for purging the fuel supply line (L10), etc. The fuel temporarily stored in the collecting tank (114) can be supplied to the demand source (200) when the demand source (200) is in operation.

[0099] Additionally, the collecting tank (114) may be configured to remove lubricating oil contained in the fuel. The collecting tank (114) may have a structure including a gas-liquid separator and a knockout drum. In this case, the fuel first flows into the gas-liquid separator to separate the gas phase, and at least a portion of the liquid fuel flows into the knockout drum to separate the lubricating oil. That is, the separation of the gas phase and lubricating oil described above may be achieved by separate configurations, but for convenience, the collecting tank (114) may encompass configurations that implement these functions.

[0100] The fuel collection unit (500) can store fuel discharged from a part where fuel is stored or flows. In the fuel collection unit (500), the fuel can be absorbed or dissolved in a cleaning agent. The fuel collection unit (500) can discharge fuel gas upward and discharge fuel dissolved in the cleaning agent downward. The fuel collection unit (500) can discharge fuel gas when the concentration of the fuel gas is below a certain value. For example, the fuel gas can be discharged when the concentration of the fuel gas is 25 ppm or less.

[0101] The fuel collection unit (500) can be formed as a scrubber.

[0102] As another example, the fuel collection unit (500) may be an absorption tank.

[0103] As another example, the fuel collection unit (500) may be in the form of a combination of a scrubber and an absorption tank. For example, the upper part of the fuel collection unit (500) may be formed in the form of a scrubber including a cleaning agent supply unit (511) that sprays a cleaning agent, and the lower part may be formed in the form of an absorption tank that stores the cleaning agent and absorbs fuel.

[0104] When an inert gas, purging gas, cleaning agent, etc. is injected into the fuel supply line (L10), etc., the inert gas, etc. passes through the demand source (200), etc., and the remaining fuel can be discharged from the fuel supply line (L10), etc.

[0105] The fuel collection unit (500) can collect fuel discharged from the demand source (200) or the fuel flow unit (100). The fuel collection unit (500) can collect fuel during a normal stop or an emergency stop.

[0106] A knockout drum (400) for separating the liquid substance of the fuel delivered to the fuel collection unit (500) may be provided between the fuel collection unit (500) and the fuel recovery unit (110b). The knockout drum (400) can receive fuel from the fuel recovery unit (110b) or the collecting tank (114) and separate the liquid substance.

[0107] The fuel collection unit (500) may use a cleaning agent to efficiently process / clean the fuel contained in the recovered gas. That is, the fuel collection unit (500) may supply a cleaning agent to the fuel recovered from the demand source (200) or the fuel flow unit (100).

[0108] The fuel collection unit (500) may generate wastewater internally while processing fuel discharged from the demand source (200) or the fuel flow unit (100) using a cleaning agent. The wastewater may remain or be stored in the fuel collection unit (500). The wastewater stored in the fuel collection unit (500) may contain at least a portion of the cleaning agent, or may consist solely of the cleaning agent. For example, the wastewater refers to a solution in which fuel is dissolved in the cleaning agent, and for example, the wastewater may be ammonia water.

[0109] The fuel collection unit (500) comprises: a first fuel collection unit (510a) that stores a cleaning agent inside; and a second fuel collection unit (510b) that is connected to the first fuel collection unit (510a) and in which a cleaning agent is sprayed inside. For example, the first fuel collection unit (510a) may be an absorption tank and the second fuel collection unit (510b) may be a scrubber, but the present invention is not limited thereto.

[0110] Sensors may be provided in the fuel collection unit (500). For example, the fuel collection unit (500) may be provided with at least one of a level sensor (S1) for measuring the water level of wastewater stored inside, a pH sensor (S2) for measuring the pH of wastewater stored inside, and an ion concentration sensor (S3) for measuring the cation concentration of wastewater stored inside. Additionally, the fuel collection unit (500) may be provided with sensors for measuring the density, electrical conductivity, or turbidity of wastewater, and various sensors may be used in combination. However, the present invention is not limited thereto.

[0111] The fuel recovered from the fuel recovery unit (100b), etc., can be transferred to the first fuel collection unit (510a). Preferably, the fuel recovered from the fuel recovery unit (100b), etc., can be injected into the lower part of the first fuel collection unit (510a). In detail, the fuel recovered from the fuel recovery unit (100b), etc., can be injected into the cleaning agent stored in the first fuel collection unit (510a). More specifically, the fuel recovered from the fuel recovery unit (100b), etc., can be sprayed into the cleaning agent stored in the first fuel collection unit (510a).

[0112] The first fuel collection unit (510a) may be provided with at least one of a level sensor (S1) for measuring the water level of wastewater stored inside, a pH sensor (S2) for measuring the pH of wastewater stored inside, and an ion concentration sensor (S3) for measuring the cation concentration of wastewater stored inside. Additionally, the first fuel collection unit (510a) may be provided with a measuring device such as a density sensor for measuring the density of wastewater stored inside and a turbidity meter for measuring the turbidity of wastewater stored inside, and the measuring device may be applied to the first fuel collection unit (510a) without limitation.

[0113] In addition, the first fuel collection unit (510a) may be provided with a cleaning agent supply unit (not shown) that supplies a cleaning agent.

[0114] The fuel recovered from the fuel recovery unit (100b), etc., can be transferred to the second fuel collection unit (510b). The fuel recovered from the fuel recovery unit (100b), etc., can be dissolved or absorbed by a cleaning agent sprayed inside the second fuel collection unit (510b).

[0115] The first fuel collection unit (510a) may be connected to the second fuel collection unit (510b). Fuel or a cleaning agent may move within the first fuel collection unit (510a) and the second fuel collection unit (510b). The first fuel collection unit (510a) may be formed integrally with the second fuel collection unit (510b).

[0116] For example, the first fuel collection unit (510a) may be provided below the second fuel collection unit (510b). Fuel gas evaporated from the first fuel collection unit (510a) may be transferred to the second fuel collection unit (510b) along with a cleaning agent by gravity.

[0117] The second fuel collection unit (510b) may be provided with a cleaning agent supply unit (511) that supplies a cleaning agent inside the housing (not shown in the reference numeral). The cleaning agent supply unit (511) may spray the cleaning agent downward. Preferably, the cleaning agent supply unit (511) may be provided at the top of the second fuel collection unit (510b). Water may be used as the cleaning agent, but any substance capable of dissolving fuel may be applied without limitation as the cleaning agent.

[0118] The second fuel collection unit (510b) may have a packing unit (not shown in the drawing) that increases contact between the fuel and the cleaning agent provided inside the housing. The packing unit may be made of a material with a large surface area, for example, a porous material. In addition, various packing methods such as random packing and structural packing may be applied to the packing unit, but the present invention is not limited thereto.

[0119] A cleaning agent may be sprayed inside the second fuel collection unit (510b). The second fuel collection unit (510b) can collect fuel gas evaporated from the wastewater of the first fuel collection unit (510a) using the cleaning agent.

[0120] The injection of a cleaning agent into the second fuel collection unit (510b) can be controlled according to the stopping conditions of the above-mentioned demand source (200). When the above-mentioned demand source (200) is in a normal stop, a cleaning agent is injected into the second fuel collection unit (510b), and when the above-mentioned demand source (200) is in an emergency stop, the injection of a cleaning agent into the second fuel collection unit (510b) is stopped.

[0121] In this specification, the fuel processing system (1) may be controlled by a control unit (not shown). Specifically, the demand source (200), the fuel collection unit (500), etc. may be controlled by the control unit, and the present invention is not limited thereto.

[0122] In order to recover fuel remaining in the above-mentioned demand source (200) or fuel flow unit (100), a recovery cleaning agent supply unit (not shown) that supplies a cleaning agent to the above-mentioned fuel flow unit (100) may be provided. Specifically, the cleaning agent may be supplied to the fuel supply line (L10) or the fuel recovery line (L20). The recovery cleaning agent supply unit may be provided upstream or downstream of the demand source (200), but the present invention is not limited thereto.

[0123] The cleaning agent supplied to the fuel flow unit (100) by the above-mentioned recovery cleaning agent supply unit can be transferred to a knockout drum (400) or a collecting tank (114) together with the fuel remaining in the fuel flow unit (100). Additionally, the fuel in the above-mentioned fuel flow unit (100), etc., can be transferred to a wastewater tank (520), etc., together with the cleaning agent. Furthermore, the fuel in the above-mentioned fuel flow unit (100), etc., can be transferred to a fuel supply line (L10) together with the cleaning agent and can be transferred to the above-mentioned demand location (200). The above-mentioned knockout drum (400), the above-mentioned collecting tank (114), the above-mentioned fuel collection unit (500), or the above-mentioned wastewater tank (520) may be omitted, but the present invention is not limited thereto.

[0124] The demand source (200) is normally stopped for regular maintenance and normal operation termination, and the demand source (200) may be emergency stopped if fuel leakage, fire, overheating, explosion, etc. occur and the fuel supply could lead to additional accidents. In the case of emergency stop, fuel must be urgently discharged from the demand source (200), etc., so the flow rate of fuel discharged from the demand source (200), etc. is greater during emergency stop than during normal stop.

[0125] Therefore, when a demand source (200) where a relatively small amount of fuel is recovered is stopped normally, the first fuel collection unit (510a) can process the fuel discharged alone. And when a demand source (200) where a large amount of fuel is generated is stopped urgently, a cleaning agent is sprayed from the second fuel collection unit (510b), and the fuel gas generated from the first fuel collection unit (510a) can be processed.

[0126] Depending on the stopping conditions of the above demand source (200), fuel discharged from the above demand source or the above fuel flow section can be transferred to a knockout drum (400) or a collecting tank (114).

[0127] In detail, when the demand source (200) is stopped in an emergency, fuel discharged from the demand source (200) or the fuel flow unit (100) can be transferred to the knockout drum (400). Additionally, when the demand source (200) is stopped in a normal state, fuel discharged from the demand source (200) or the fuel flow unit (100) can be transferred to the collecting tank (114).

[0128] The knockout drum (400) can implement a gas-liquid separator function similar to that of a collecting tank (114), etc. The knockout drum (400) can separate liquid discharged from a demand source (200) into inert gas, etc., and the separated liquid can be recirculated to the demand source (200) through a fuel supply unit (110a), etc. Additionally, the fuel separated from the knockout drum (400) can be delivered to a fuel collection unit (500). The inert gas, etc. separated from the knockout drum (400) can be delivered to an inert gas supply unit (not shown).

[0129] The knockout drum (400) can separate the fuel from inert gas, etc., to prevent the pressure of the fuel from rising excessively. In the event of an emergency stop of the demand source (200), the knockout drum (400) can deliver gaseous fuel or liquid fuel to the fuel collection unit (500). Preferably, the knockout drum (400) can deliver gaseous fuel to the fuel collection unit (500) and deliver liquid fuel to the fuel flow unit (100). The knockout drum (400) can deliver liquid fuel to the fuel flow unit (100) through the collecting tank (114), but the present invention is not limited thereto.

[0130] The collecting tank (114) can supply at least a portion of the fuel recovered from the demand source (200) to the demand source (200). When the demand source (200) is normally shut down, the collecting tank (114) can transfer gaseous fuel or liquid fuel to the fuel collection unit (500).

[0131] In this specification, gaseous fuel or liquid fuel may include substances other than fuel. For example, gaseous fuel may include gaseous fuel and inert gas, etc.

[0132] A fuel delivery line (L30) may be provided between the fuel flow section (100) and the knockout drum (400). The fuel delivery line (L30) may be connected to a first fuel delivery line (L31) branched from the fuel recovery line (L20) downstream of the demand point (200).

[0133] Additionally, a fuel collection line (L40) may be provided between the knockout drum (400) and the fuel collection unit (500). The fuel collection line (L40) may be connected to a second fuel delivery line (L32) extending from the collecting tank (114).

[0134] The fuel collection line (L40) may be connected to the fuel collection unit (500). Specifically, the fuel collection line (L40) may extend into the fuel collection unit (500). More specifically, the fuel collection line (L40) may extend to the lower part of the first fuel collection unit (510a). Fuel delivered along the fuel collection line (L40) may be injected into the cleaning agent of the first fuel collection unit (510a). The fuel may be absorbed or dissolved in the cleaning agent.

[0135] The wastewater tank (520) can store wastewater discharged from the fuel collection unit (500). Specifically, the wastewater tank (520) can store wastewater discharged from the first fuel collection unit (510a). The wastewater stored in the wastewater tank (520) refers to a solution in which fuel is dissolved in a cleaning agent, and for example, the wastewater may be ammonia water. The wastewater from the first fuel collection unit (510a) can be transferred to the wastewater tank (520) along the wastewater tank line (L41).

[0136] The wastewater tank (520) can maintain the wastewater at a constant level. At this time, the level of the wastewater can be managed to an appropriate level by a level sensor (not shown) provided in the wastewater tank (520).

[0137] The wastewater tank (520) may generate fuel vapor from the wastewater. The wastewater tank (520) may process the fuel vapor by circulating it to the fuel collection unit (500). However, the present invention is not limited thereto.

[0138] Some of the fuel vaporized in the wastewater tank (520) can be discharged into the atmosphere through a vent mast (not shown). The fuel flowing through the vent mast can be controlled so that its concentration does not exceed the concentration required by safety or environmental regulations.

[0139] The fuel collection unit (500) can maintain wastewater at a constant level. When the level of wastewater stored in the fuel collection unit (500) is above a certain value, the wastewater can be transferred to the wastewater tank (520). Specifically, when the level of wastewater measured by a level sensor (S1) provided in the fuel collection unit (500) is above a certain value, the wastewater can be transferred to the wastewater tank (520).

[0140] Additionally, the level of wastewater or cleaning agent stored in the fuel collection unit (500) can be maintained above a certain value. Specifically, the level of wastewater stored in the first fuel collection unit (510a) can be maintained above a certain value. When wastewater is transferred from the fuel collection unit (500) to the wastewater tank (520), cleaning agent can be supplied to the fuel collection unit (500).

[0141] Depending on the level of wastewater measured by the level sensor (S1), a valve (not shown) provided in the wastewater tank line (L41) may be controlled, or a cleaning agent supply unit (511) may be controlled. For example, if the level of wastewater in the fuel collection unit (500) is below a certain value, a cleaning agent may be supplied by the cleaning agent supply unit (511), and if the level of wastewater in the fuel collection unit (500) is above a certain value, a valve (not shown) provided in the wastewater tank line (L41) may be opened.

[0142] When the cation concentration of the wastewater stored in the fuel collection unit (500) is above a certain value, the wastewater can be transferred to the wastewater tank (520). Specifically, when the ammonium concentration of the wastewater stored in the fuel collection unit (500) is above a certain value, the wastewater can be transferred to the wastewater tank (520). When the ammonium concentration of the wastewater measured by the ion concentration sensor (S3) provided in the fuel collection unit (500) is above a certain value, the wastewater can be transferred to the wastewater tank (520). A valve (not shown in the symbol) provided in the wastewater tank line (L41) can be controlled according to the ammonium concentration of the wastewater measured by the ion concentration sensor (S3). For example, when the ammonium concentration of the wastewater measured by the ion concentration sensor (S3) is above a certain value, the valve (not shown in the symbol) provided in the wastewater tank line (L41) can be opened. At this time, the cleaning agent supply unit (511) can be controlled to supply the cleaning agent to the fuel collection unit (500).

[0143] At least a portion of the wastewater stored in the fuel collection unit (500) can be transferred to the wastewater tank (520), and a cleaning agent can be supplied to the fuel collection unit (500). Accordingly, the ammonium concentration of the wastewater in the fuel collection unit (500) can be lowered, and the sedimentation of ammonium solids in the fuel collection unit (500) due to an increase in ammonium concentration can be prevented.

[0144] The fuel processing system (1) may include a neutralizing agent supply unit (530) that supplies a neutralizing agent to the fuel collection unit (500). Here, the neutralizing agent can lower the pH of the wastewater of the fuel collection unit (500). The neutralizing agent may include acidic substances such as hydrochloric acid, nitric acid, and sulfuric acid, but the present invention is not limited thereto.

[0145] The above neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500) when the pH of the wastewater stored in the fuel collection unit (500) is above a certain value. Specifically, the above neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500) when the pH of the wastewater measured by the pH sensor (S2) provided in the fuel collection unit (500) is above a certain value. Thus, by adjusting the pH, the ammonia collection efficiency can be increased, the generation of ammonia evaporative gas from the wastewater can be prevented, and the precipitation of ammonium solids can be prevented.

[0146] The above neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500) when the pH of the wastewater stored in the fuel collection unit (500) is above a certain value. Specifically, the above neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500) when the pH of the wastewater measured by the pH sensor (S2) provided in the fuel collection unit (500) is above a certain value. Thus, by adjusting the pH, the ammonia collection efficiency can be increased, and the generation of ammonia evaporation gas from the wastewater can be prevented.

[0147] When the cation concentration of wastewater stored in the fuel collection unit (500) is above a certain value, the neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500). Specifically, when the ammonium concentration of wastewater stored in the fuel collection unit (500) is above a certain value, the neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500). When the ammonium concentration of wastewater measured by the ion concentration sensor (S3) provided in the fuel collection unit (500) is above a certain value, the neutralizing agent supply unit (530) can supply a neutralizing agent to the fuel collection unit (500).

[0148] The above neutralizing agent supply unit (530) may be provided with a neutralizing agent supply pump (530a) that supplies the neutralizing agent to the fuel collection unit (500). The neutralizing agent supply pump (530a) may be controlled according to the pH of the wastewater measured by the pH sensor (S2). Additionally, the neutralizing agent supply pump (530a) may be controlled according to the ammonium concentration of the wastewater measured by the ion concentration sensor (S3).

[0149] At least a portion of the wastewater stored in the fuel collection unit (500) is transferred to the wastewater tank (520), and the neutralizing agent supply unit (530) may supply a neutralizing agent to the fuel collection unit (500), but the present invention is not limited thereto.

[0150]

[0151] FIG. 2 is a conceptual diagram of a fuel processing system according to a second embodiment of the present invention. Content that overlaps with what has been described above may be omitted.

[0152] Referring to FIG. 2, a fuel processing system (1) according to a second embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and a wastewater treatment unit (600) that processes wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) includes a drying unit (610) that dries the wastewater to separate solid matter contained in the wastewater.

[0153] The above fuel collection unit (500) may include at least one of a first fuel collection unit (510a) that stores a cleaning agent inside; and a second fuel collection unit (510b) in which a cleaning agent is sprayed inside.

[0154] The first fuel collection unit (510a) and the second fuel collection unit (510b) may be connected to each other. Specifically, the first fuel collection unit (510a) may be formed integrally with the second fuel collection unit (510b).

[0155] The fuel processing system (1) includes a wastewater tank (520) for storing wastewater discharged from the fuel collection unit (500); and when the ammonium concentration of the wastewater stored in the fuel collection unit (500) is above a certain value, the wastewater can be transferred to the wastewater tank (520).

[0156] The fuel processing system (1) may include a neutralizing agent supply unit (530) that supplies a neutralizing agent to the fuel collection unit. The neutralizing agent supply unit (530) may supply a neutralizing agent to the fuel collection unit (500) when the pH of the wastewater stored in the fuel collection unit (500) is above a certain value.

[0157] A neutralizing agent can react with ammonium ions contained in wastewater to form an ammonium salt. A neutralizing agent can react with ammonium ions contained in wastewater to form an insoluble salt (solid). Specifically, a neutralizing agent can react with ammonium ions contained in wastewater to form an insoluble ammonium salt. For example, the neutralizing agent is hydrochloric acid and can react with ammonium ions contained in wastewater to form ammonium chloride. In the present invention, the neutralizing agent is not limited to any specific type as long as it can react with ammonium ions to form an ammonium salt.

[0158] The wastewater treatment unit (600) can treat wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) can treat wastewater delivered from the wastewater tank (520).

[0159] In detail, the wastewater treatment unit (600) can dry the wastewater to collect the salt contained in the wastewater in various forms. In detail, ammonium phosphate / ammonium sulfate, etc. in the wastewater can be collected in a solid form such as powder as the wastewater is dried. In addition, the salt in the wastewater can be collected as a slurry or solution. The salt in the wastewater can be dried and concentrated into a high-concentration solution, slurry, or solid powder form.

[0160] For example, the wastewater treatment unit (600) can dry the wastewater to separate ammonium ions into ammonium salts. Preferably, the wastewater treatment unit (600) can dry the wastewater to separate cations contained in the wastewater into solid salts. In this specification, drying may mean evaporating a cleaning agent contained in the wastewater by heating, etc.

[0161] The wastewater treatment unit (600) can evaporate a cleaning agent from the wastewater. At this time, solid salts can be separated. Specifically, the drying unit (610) can evaporate the cleaning agent from the wastewater to separate solid salts. For example, the wastewater treatment unit (600) can evaporate the water contained in the wastewater into steam and separate ammonium salts. At this time, the water contained in the wastewater can be discharged to the outside as steam. Therefore, a tank or the like for separately storing the water contained in the wastewater can be omitted.

[0162] In addition, since wastewater is collected at a relatively concentrated level and its volume is reduced, the wastewater treatment and unloading cycle can be extended and wastewater treatment costs can be reduced.

[0163] The wastewater treatment unit (600) may include a solid storage unit (620) for storing solids separated from wastewater discharged from the drying unit (610). The solid storage unit (620) may be sealed to prevent leakage of fuel vapor generated from the solids. Additionally, the solid storage unit (620) may maintain an internal temperature below a certain value to prevent fuel from evaporating from the solids. The solid storage unit (620) may be equipped with a temperature sensor, a concentration sensor, or a pH sensor, but the present invention is not limited thereto. The solids in the solid storage unit (620) may be converted into fuel and recovered through a reprocessing process such as heating.

[0164]

[0165] FIG. 3 is a conceptual diagram of a fuel processing system according to a third embodiment of the present invention.

[0166] Referring to FIG. 3, a fuel processing system (1) according to a third embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and a wastewater treatment unit (600) that processes wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) includes a drying unit (610) that dries the wastewater to separate solid matter contained in the wastewater.

[0167] The first fuel collection unit (510a) and the second fuel collection unit (510b) may be connected to each other. Specifically, the first fuel collection unit (510a) may be formed integrally with the second fuel collection unit (510b).

[0168] The evaporated wastewater discharged from the drying unit (610) can be transferred to the fuel collection unit (500). The evaporated wastewater discharged from the drying unit (610) can be transferred to the fuel collection unit (500) along the wastewater condensation line (L42). The evaporated wastewater may be water vapor, but the present invention is not limited thereto.

[0169] The wastewater treatment unit (600) may include a condensation unit (630) for condensing the evaporative gas of wastewater discharged from the drying unit (610). Specifically, the condensation unit (630) may condense the evaporative gas of a cleaning agent generated while separating solids contained in the wastewater in the drying unit (610).

[0170] The evaporated wastewater condensed by the condensation unit (630) can be delivered to the fuel collection unit (500). Specifically, the evaporated wastewater condensed by the condensation unit (630) can be delivered to the fuel collection unit (500) along the wastewater condensation line (L42).

[0171] The wastewater condensation line (L42) may be connected to the upper or lower part of the fuel collection unit (500). The cleaning agent delivered along the wastewater condensation line (L42) may be sprayed from the upper part of the fuel collection unit (500).

[0172] The neutralizing agent supply unit (530) can supply a neutralizing agent to the wastewater condensation line (L42). The neutralizing agent supply unit (530) can maintain the pH of the cleaning agent delivered to the fuel collection unit (500) through the wastewater condensation line (L42) at a value below a certain value.

[0173] In the fuel processing system (1) according to the present embodiment, water may be used as a cleaning agent, and the water may be produced by vaporizing seawater or membrane separation, etc. Since a large amount of energy is input for the production of water, the fuel processing system (1) can reduce the amount of water used in the fuel collection unit (500).

[0174]

[0175] FIG. 4 is a conceptual diagram of a fuel processing system according to a fourth embodiment of the present invention.

[0176] Referring to FIG. 4, in a fuel processing system (1) according to a fourth embodiment of the present invention, the fuel collection unit (500) may include at least one of a first fuel collection unit (510a) that stores a cleaning agent inside; and a second fuel collection unit (510b) that sprays a cleaning agent inside. The fuel collection unit (500) may be a scrubber that collects fuel by spraying a cleaning agent inside, or an absorption tank that collects fuel with a cleaning agent stored at a certain level, but the present invention is not limited thereto.

[0177] In the fuel processing system (1), the wastewater treatment unit (600) may include a drying unit (610) that dries the wastewater to separate solid matter contained in the wastewater. The evaporated wastewater discharged from the drying unit (610) may be delivered to the fuel collection unit (500). The evaporated wastewater discharged from the drying unit (610) may be delivered to the fuel collection unit (500) along the wastewater condensation line (L42).

[0178] The wastewater condensation line (L42) may be connected to the upper or lower part of the fuel collection unit (500). The cleaning agent delivered along the wastewater condensation line (L42) may be sprayed from the upper part of the fuel collection unit (500). Additionally, the cleaning agent delivered along the wastewater condensation line (L42) may be delivered to the lower part of the fuel collection unit (500). The fuel collection unit (500) may be filled with cleaning agent above a certain level.

[0179] The fuel processing system (1) according to the third or fourth embodiment of the present invention can dry process the fuel to separate it into solids, recover the cleaning agent generated during the drying process, and eliminate the equipment required to separately process or separately store the cleaning agent, thereby reducing the cost required for the processing of the cleaning agent, etc.

[0180]

[0181] FIG. 5 is a conceptual diagram of a fuel processing system according to the fifth embodiment of the present invention.

[0182] Referring to FIG. 5, a fuel treatment system (1) according to the fifth embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and a wastewater treatment unit (600) that processes wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) comprises a membrane treatment unit (611) provided with a membrane (611a) that selectively permeates fuel contained in the wastewater.

[0183] The membrane processing unit (611) can pass through gaseous fuel. Specifically, the membrane (611a) provided in the membrane processing unit (611) can pass through gaseous fuel. The membrane (611a) may be a membrane filter.

[0184] The above membrane (611a) may be a gas permeable membrane. When wastewater is supplied to the membrane treatment unit (611), fuel in a gaseous state can permeate through the membrane (611a). At this time, for efficient fuel separation by the membrane (611a), it is desirable that the pressure of the wastewater be maintained above a certain value or that the temperature of the wastewater be maintained above a certain value. In addition, for efficient fuel separation by the membrane (611a), it is desirable that the pH of the wastewater be maintained above a certain value.

[0185] Accordingly, the fuel treatment system (1) may include a heater (not shown) provided upstream of the membrane treatment unit (611) and heating the wastewater delivered to the membrane treatment unit (611) to lower the solubility of the fuel; or a pump (not shown) provided upstream of the membrane treatment unit (611) and supplying wastewater to the membrane treatment unit (611).

[0186] The membrane (611a) can separate the interior of the membrane processing unit (611). Specifically, the membrane (611a) can separate the interior of the membrane processing unit (611) into at least two regions. For example, the membrane (611a) may include a membrane tube, and gas may permeate through the pores of the membrane tube and fuel may be separated. However, the present invention is not limited by the shape of the membrane (611a).

[0187] The above membrane (611a) can separate wastewater delivered from the fuel collection unit (500) into gaseous fuel and residual liquid. Gaseous fuel may be collected in one area of ​​the membrane processing unit (611) separated by the membrane (611a), and residual liquid may be collected in another area. Residual liquid may represent the fluid remaining after the fuel has been separated from the wastewater.

[0188] The fuel processing system (1) may include a separated fuel storage unit (621) provided downstream of the membrane processing unit (611) and in which fuel separated from the membrane processing unit (611) is stored. One area of ​​the membrane processing unit (611) separated by the membrane (611a) may be connected to the separated fuel storage unit (621). Gaseous fuel separated by the membrane (611a) may be collected in the separated fuel storage unit (621).

[0189] In addition, downstream of the membrane processing unit (611), an incineration device for burning fuel separated from the membrane processing unit (611) or an oxidation device for oxidizing fuel separated from the membrane processing unit (611) may be provided.

[0190] One area of ​​the membrane processing unit (611) connected to the separated fuel storage unit (621) may be maintained in a low pressure or vacuum state. A vacuum pump (not shown) may be connected to the one area. By maintaining the one area in a low pressure or vacuum state, gaseous fuel can be efficiently separated from wastewater.

[0191] For example, the ammonia fuel in the membrane treatment unit (611) can be degassed by the vacuum pump. At this time, the separated gaseous ammonia can be supplied upstream of the exhaust treatment unit (700) to be described later. In the exhaust treatment unit (700), the gaseous ammonia can be used as a reducing agent for exhaust gas.

[0192] The above separated fuel storage unit (621) can store a cleaning agent. Additionally, the above separated fuel storage unit (621) can store a neutralizing agent having a pH below a certain value. The cleaning agent or the above neutralizing agent may have a pH below a certain value.

[0193] The fuel processing system (1) may include an auxiliary collection unit (650) provided downstream of the membrane processing unit (611) and for collecting residual liquid separated from the membrane processing unit (611). Other areas of the membrane processing unit (611) separated by the membrane (611a) may be connected to the auxiliary collection unit (650). Residual liquid separated by the membrane (611a) may be collected in the auxiliary collection unit (650).

[0194] The wastewater collected in the auxiliary collection unit (650) can be reused as a cleaning agent. Therefore, the volume of the auxiliary collection unit (650) can be reduced, and the storage space for the auxiliary collection unit (650) can also be reduced.

[0195] The fuel treatment system (1) according to the present embodiment can separate fuel from wastewater selectively because the membrane treatment unit (611) can separate fuel at a high concentration, and thus reduce the storage space of the recovered fuel.

[0196]

[0197] FIG. 6 is a conceptual diagram of a fuel processing system according to the sixth embodiment of the present invention.

[0198] Referring to FIG. 6, the fuel processing system (1) according to the sixth embodiment of the present invention may include a neutralizing agent storage tank (622) that stores a neutralizing agent having a pH of less than or equal to a certain value.

[0199] One area of ​​the membrane processing unit (611) separated by the membrane (611a) may be connected to a neutralizing agent storage tank (622). The neutralizing agent storage tank (622) may supply a neutralizing agent to one area of ​​the membrane processing unit (611). The neutralizing agent may collect gaseous fuel that has passed through the membrane (611a) in one area of ​​the membrane processing unit (611). Specifically, the neutralizing agent of the membrane processing unit (611) may absorb gaseous fuel. A neutralizing agent pump (not shown in the symbol) that supplies a neutralizing agent to the membrane processing unit (611) may be provided between the neutralizing agent storage tank (622) and the membrane processing unit (611).

[0200]

[0201] FIG. 7 is a conceptual diagram of a fuel processing system according to the seventh embodiment of the present invention.

[0202] Referring to FIG. 7, a fuel processing system (1) according to the seventh embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and an exhaust treatment unit (700) that chemically processes pollutants contained in the exhaust gas discharged from the demand place (200).

[0203] The exhaust treatment unit (700) processes exhaust discharged from the demand location (200). The exhaust from the demand location (200) may contain various foreign substances (particles) and environmentally polluting substances such as nitrogen oxides (NOx), and the exhaust treatment unit (700) can properly treat pollutants in the exhaust using chemical reactions, etc. The demand location (200) and the exhaust treatment unit (700) can be connected through an exhaust line (L50).

[0204] In detail, the exhaust treatment unit (700) can treat exhaust with wastewater, fuel, or a reducing agent stored in the fuel collection unit (500). For example, the exhaust treatment unit (700) may be a selective catalytic reduction (SCR) device or a scrubber.

[0205]

[0206] FIG. 8 is a conceptual diagram of a fuel processing system according to the eighth embodiment of the present invention.

[0207] Referring to FIG. 8, a fuel processing system (1) according to the eighth embodiment of the present invention may include an incineration unit (800) that incinerates wastewater stored in a fuel collection unit (500). The incineration unit (800) may be a combustion device or an incinerator that incinerates waste oil, sludge, waste, etc. generated in the fuel processing system (1), but the present invention is not limited thereto. When the incineration unit (800) incinerates wastewater stored in the fuel collection unit (500), a pilot fuel may be supplied to the incineration unit (800).

[0208] The amount of pilot fuel supplied to the incineration unit (800) can be adjusted according to the flow rate of wastewater supplied from the fuel collection unit (500) to the incineration unit (800) or the ratio of the cleaning agent contained in the wastewater stored in the fuel collection unit (500).

[0209] FIG. 9 is a conceptual diagram of a fuel processing system according to the ninth embodiment of the present invention.

[0210] Referring to FIG. 9, a fuel processing system (1) according to the ninth embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a recovery cleaning agent supply unit (not shown) that supplies a cleaning agent to the demand place (200) or the fuel flow unit (100) to discharge fuel from the demand place (200) or the fuel flow unit (100), or a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500) is supplied to the demand place (200) or a combustion unit, and the ratio of the cleaning agent supplied to the demand place (200) together with the fuel is maintained at a value below a certain value.

[0211] The above-mentioned recovery cleaning agent supply unit or the above-mentioned fuel collection unit (500) may be provided optionally, but both the above-mentioned recovery cleaning agent supply unit and the above-mentioned fuel collection unit (500) may be provided, and the present invention is not limited thereto.

[0212] The above demand source (200) or the above combustion device can incinerate wastewater along with fuel. The above demand source (200) or the above combustion device can incinerate a cleaning agent along with fuel.

[0213] The above demand source (200) may be a dual-fuel engine. For example, the above demand source (200) may be an ammonia DF engine. When the above demand source (200) is operated in diesel mode, a cleaning agent may be burned in the above demand source (200).

[0214] The above demand source (200) can treat wastewater delivered from the above fuel collection unit (500) by burning it together with fuel. However, if the cleaning agent is supplied to the above demand source (200) at a flow rate exceeding a certain value, problems such as reduced output may occur due to poor combustion of fuel. Therefore, it is desirable to maintain the ratio of the cleaning agent supplied to the above demand source (200) together with the fuel or the flow rate of the cleaning agent at or below a certain value.

[0215] Wastewater treated by the above recovery cleaning agent supply unit or the above fuel collection unit (500) can be delivered to the above demand location (200) through the wastewater combustion line (L62). The wastewater combustion line (L62) may be provided with a pump (P1) that supplies wastewater stored in the above fuel collection unit (500) to the above demand location (200).

[0216] The above pump (P1) can supply wastewater treated by the above recovery cleaning agent supply unit to the above demand location (200). The fuel collection unit (500) of the above wastewater combustion line (L62) may be omitted.

[0217] For example, the ratio of the cleaning agent supplied together with fuel to the demand source (200) can be maintained at 1% or less, preferably 0.7% or less, and more preferably 0.5% or less. The demand source (200) can operate normally within the ratio range of the cleaning agent, and the present invention is not limited by the ratio range of the cleaning agent. Here, the ratio of the cleaning agent supplied together with fuel to the demand source (200) may be the ratio of the weight of the cleaning agent to the total weight of the fluid supplied to the demand source (200).

[0218] Depending on the upper limit value of the ratio of the cleaning agent supplied together with fuel to the above demand location (200), the flow rate of wastewater supplied to the above demand location (200) may be adjusted, or the ratio of the cleaning agent contained in the wastewater treated by the above recovery cleaning agent supply unit or the above fuel collection unit (500) may be adjusted, or the flow rate of fuel supplied to the above demand location (200) may be adjusted. That is, depending on the upper limit value of the ratio of the cleaning agent supplied together with fuel to the above demand location (200), the flow rate of wastewater supplied to the above demand location (200), etc., may be feedback-controlled.

[0219] Additionally, the flow rate of fuel supplied to the demand location (200) or the ratio of the cleaning agent contained in the wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500) may be adjusted according to the flow rate of wastewater supplied to the demand location (200), or the flow rate of fuel supplied to the demand location (200) or the flow rate of wastewater supplied to the demand location (200) may be adjusted according to the ratio of the cleaning agent contained in the wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500), or the flow rate of wastewater supplied to the demand location (200) or the ratio of the cleaning agent contained in the wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500) may be adjusted according to the flow rate of fuel supplied to the demand location (200).

[0220] That is, in order to maintain the ratio of the cleaning agent supplied together with fuel to the demand source (200) at or below a certain value, the flow rate of wastewater supplied to the demand source (200), the flow rate of fuel supplied to the demand source (200), and the ratio of the cleaning agent contained in the wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500) may be feedforwardly controlled, but the present invention is not limited thereto.

[0221] When the operating load of the above demand location (200) increases, the flow rate of fuel delivered to the above demand location (200) and burned at the above demand location (200) increases, and accordingly, the flow rate of the cleaning agent that can be processed at the above demand location (200) may increase.

[0222] Accordingly, the flow rate of wastewater supplied to the demand location (200) or the ratio of the cleaning agent contained in the wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500) can be adjusted according to the operating load of the demand location (200). For example, if the operating load of the demand location (200) increases, the flow rate of wastewater supplied to the demand location (200) or the ratio of the cleaning agent contained in the wastewater treated by the recovery cleaning agent supply unit or the fuel collection unit (500) can increase.

[0223] The fuel processing system (1) may include a concentration sensor (not shown) for measuring the concentration of wastewater stored in the fuel collection unit. Additionally, the fuel processing system (1) may include a wastewater tank (520) for storing wastewater discharged from the fuel collection unit (500), and the concentration sensor may be provided in the wastewater tank (520). The concentration sensor may measure the concentration of fuel in the fuel collection unit (500) or the wastewater tank (520). Based on the measurement value of the concentration sensor, the ratio of the cleaning agent contained in the wastewater of the fuel collection unit (500) or the wastewater tank (520) may be confirmed. Additionally, a concentration sensor (not shown) may be provided upstream of the demand location (200) or in the fuel flow unit (100). The ratio of the cleaning agent supplied to the demand location (200) along with the fuel may be confirmed by the concentration sensor. The concentration sensor provided in the fuel flow unit (100) can measure the fuel concentration of wastewater treated with a cleaning agent by the recovery cleaning agent supply unit.

[0224] In this way, the fuel treatment system (1) according to the present embodiment allows the demand source (200) to treat wastewater during the normal operation of the demand source (200). Therefore, a separate incineration device may be omitted.

[0225]

[0226] FIG. 10 is a conceptual diagram of a fuel processing system according to the 10th embodiment of the present invention.

[0227] Referring to FIG. 10, a fuel processing system (1) according to the 10th embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and a wastewater treatment unit (600) that processes wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) may include a heat treatment unit (612) that heats the wastewater to separate the fuel; and a condensation heat exchange unit (632) that condenses the fuel separated in the heat treatment unit (612).

[0228] The heat treatment unit (612) can separate fuel by heating wastewater. Specifically, the heat treatment unit (612) can separate fuel vapor by heating wastewater. The heat treatment unit (612) can separate fuel by distilling wastewater. The heat treatment unit (612) may be provided with a tray or packing composed of multiple layers inside.

[0229] The wastewater treatment unit (600) may include a reboiler (631) that reheats the wastewater from which fuel has been separated in the heat treatment unit (612). At least a portion of the wastewater heated in the reboiler (631) may be circulated to the heat treatment unit (612). The reboiler (631) may be provided at the bottom of the heat treatment unit (612). At least a portion of the wastewater heated in the reboiler (631) may be transferred to an auxiliary collection unit (650).

[0230] Additionally, the reboiler (631) may be omitted. Furthermore, a bypass line (not shown) may be provided through which wastewater from which fuel has been separated in the heat treatment unit (612) bypasses the reboiler (631).

[0231] The heat treatment unit (612) may be supplied with a heat medium directly. The heat medium may be supplied to the lower part of the heat treatment unit (612). The steam may separate fuel from wastewater. The heat medium may be steam, but the present invention is not limited thereto. Since the heat medium is supplied directly to the heat treatment unit (612), the cost of installing a separate heat exchanger is reduced, and leakage of the heat medium from the heat exchanger can be prevented.

[0232] The fuel separated from the heat treatment unit (612) can be transferred to the condensation heat exchange unit (632). Specifically, the fuel separated from the heat treatment unit (612) can be transferred to the condensation heat exchange unit (632) from the upper part of the heat treatment unit (612).

[0233] The above condensation heat exchanger (632) can control the temperature of the fuel vapor delivered from the heat treatment unit (612). Specifically, the above condensation heat exchanger (632) can cool the fuel vapor delivered from the heat treatment unit (612). The above condensation heat exchanger (632) can condense or liquefy the fuel vapor delivered from the heat treatment unit (612).

[0234] The wastewater treatment unit (600) may include a condensation storage unit (623) that stores fuel condensed in the fuel condensation heat exchange unit (632). The condensation storage unit (623) may store fuel with high purity or concentration.

[0235] The above condensation storage unit (623) may be provided with a concentration sensor (not shown). Depending on the concentration of fuel measured in the condensation storage unit (623), at least one of the flow rate of wastewater transferred from the fuel collection unit (500) to the heat treatment unit (612), the temperature of the reboiler (631), the temperature of the condensation heat exchanger (632), and the flow rate of wastewater returned from the reboiler (631) to the heat treatment unit (612) may be adjusted. Preferably, the concentration of fuel in the condensation storage unit (623) may be maintained above a certain value.

[0236] The fuel processing system (1) according to the present embodiment can reduce the storage space of recovered fuel because the condensation heat exchanger (632) condenses and stores fuel from wastewater.

[0237]

[0238] FIG. 11 is a conceptual diagram of a fuel processing system according to the 11th embodiment of the present invention.

[0239] Referring to FIG. 11, in a fuel processing system (1) according to the 11th embodiment of the present invention, fuel condensed in a condensation heat exchanger (632) is delivered to a demand location (200). The demand location (200) can process the fuel condensed in the condensation heat exchanger (632) or generate power using the condensed fuel. If the ratio of the cleaning agent included in the wastewater delivered to the demand location (200) is greater than a certain value, the fuel processing efficiency of the demand location (200) may be lowered.

[0240] Additionally, the wastewater treatment unit (600) may include a condensation storage unit (623) that stores fuel condensed in the fuel condensation heat exchange unit (632), and at least a portion of the condensed fuel stored in the condensation storage unit (623) may be supplied to the demand source (200).

[0241] The fuel processing system (1) according to the present embodiment can increase the concentration of fuel delivered to the demand source (200) to increase the fuel processing efficiency of the demand source (200).

[0242]

[0243] FIG. 12 is a conceptual diagram of a fuel processing system according to the 12th embodiment of the present invention.

[0244] Referring to FIG. 12, a fuel treatment system (1) according to the 12th embodiment of the present invention may include an exhaust treatment unit (700) that chemically treats pollutants contained in exhaust gas discharged from the demand source (200). At least a portion of the fuel condensed in the condensation heat exchanger (632) may be supplied to the exhaust treatment unit (700).

[0245] Additionally, the wastewater treatment unit (600) may include a condensation storage unit (623) that stores fuel condensed in the condensation heat exchange unit (632), and at least a portion of the condensed fuel stored in the condensation storage unit (623) may be supplied to the exhaust treatment unit (700).

[0246] When the fuel concentration is low, a large amount of fuel must be supplied, and at this time, a large amount of cleaning agent may be supplied to the exhaust gas along with the fuel. In this case, the temperature of the exhaust gas is lowered due to the cleaning agent, and the treatment efficiency of the exhaust gas may decrease. The fuel treatment system (1) according to the present embodiment can have sufficient exhaust gas treatment performance because the fuel condensed in the condensation heat exchanger (632) has a concentration of a certain value or higher.

[0247]

[0248] FIG. 13 is a conceptual diagram of a fuel processing system according to the 13th embodiment of the present invention.

[0249] Referring to FIG. 13, a fuel treatment system (1) according to the 13th embodiment of the present invention may include an exhaust treatment unit (700) that chemically treats pollutants contained in exhaust gas discharged from the demand source (200). Fuel separated in the heat treatment unit (612) may be supplied to the exhaust treatment unit (700).

[0250] Steam or air may be supplied into the heat treatment unit (612). Fuel may be degassed from wastewater by the steam or air supplied to the heat treatment unit (612).

[0251] At this time, the fuel separated from the heat treatment unit (612) can be supplied to the exhaust treatment unit (700) in a gaseous state. The fuel separated from the heat treatment unit (612) may be a high-concentration concentrated gas. Since the fuel supplied to the exhaust treatment unit (700) is supplied in a gaseous state, the fuel treatment system (1) according to the present embodiment can prevent the pollutant treatment effect in the exhaust treatment unit (700) from being reduced due to a decrease in the temperature of the exhaust gas.

[0252] FIG. 14 is a conceptual diagram of a fuel processing system according to the 14th embodiment of the present invention.

[0253] Referring to FIG. 14, the fuel processing system (1) according to the 14th embodiment of the present invention supplies fuel condensed in the condensation heat exchanger (632) to the incineration unit (800), and the incineration unit can process the fuel by burning it. The incineration unit may be an incinerator that incinerates waste oil, sludge, waste, etc. generated in the fuel processing system (1), and the present invention is not limited thereto. The fuel condensed in the condensation heat exchanger (632) may have a relatively high concentration. Therefore, the fuel processing system (1) according to the present embodiment can prevent the incineration efficiency of wastewater in the incineration unit (800) from decreasing due to the cleaning agent contained in the wastewater.

[0254] In addition, the fuel condensed in the condensation heat exchanger (632) is supplied to an oxidation device provided with an oxidation catalyst, and the fuel can be chemically treated by the oxidation device.

[0255]

[0256] FIG. 15 is a conceptual diagram of a fuel processing system according to the 15th embodiment of the present invention.

[0257] Referring to FIG. 15, a fuel treatment system (1) according to the 15th embodiment of the present invention may include a wastewater treatment unit (600) that treats wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) may include a first wastewater treatment unit (612a) that heats wastewater to separate fuel and a second wastewater treatment unit (612b) that treats wastewater delivered from the first wastewater treatment unit (612a). The first wastewater treatment unit (612a) may be a heating treatment unit (612) that heats wastewater to separate fuel.

[0258] At least a portion of the wastewater discharged from the fuel collection unit (500) may be transferred to the auxiliary collection unit (650). Specifically, the auxiliary collection unit (650) may be provided downstream of the first wastewater treatment unit (612a), and at least a portion of the wastewater discharged from the first wastewater treatment unit (612a) may be transferred to the auxiliary collection unit (650). More specifically, the auxiliary collection unit (650) may be provided between the first wastewater treatment unit (612a) and the second wastewater treatment unit (612b). Wastewater collected from the auxiliary collection unit (650) may be transferred to the second wastewater treatment unit (612b).

[0259] The second wastewater treatment unit (612b) can further lower the fuel concentration of the wastewater from which fuel has been separated in the first wastewater treatment unit (612a). The fuel separated in the second wastewater treatment unit (612b) can be discharged to the outside. The wastewater from which fuel has been separated in the second wastewater treatment unit (612b) can be transferred to the second auxiliary collection unit (650a).

[0260] The second wastewater treatment unit (612b) can reduce the concentration of fuel in the wastewater in various ways. For example, the second wastewater treatment unit (612b) may include a reheating unit that heat-treats the wastewater from which fuel has been separated in the first wastewater treatment unit (612a); a degassing unit that degasses the wastewater from which fuel has been separated in the first wastewater treatment unit (612a); or a biological treatment unit that biologically treats the wastewater from which fuel has been separated in the first wastewater treatment unit (612a).

[0261] The second wastewater treatment unit (612b) can reduce the concentration of fuel in the wastewater by a plurality of methods. For example, the second wastewater treatment unit (612b) can heat-treat and degas-treat the wastewater from which fuel has been separated in the first wastewater treatment unit (612a). Preferably, steam may be supplied to the inside of the second wastewater treatment unit (612b). At this time, to increase the efficiency of fuel separation, the pH of the wastewater may be increased, the flow rate of the treatment gas supplied to the second wastewater treatment unit (612b) may be increased, or the heating temperature of the wastewater may be increased.

[0262] The fuel treatment system (1) according to the present embodiment may have a wastewater treatment unit composed of a plurality of wastewater treatment units. In the wastewater treatment unit, heating treatment and degassing treatment may be performed.

[0263]

[0264] FIG. 16 is a conceptual diagram of a fuel processing system according to the 16th embodiment of the present invention.

[0265] Referring to FIG. 16, a fuel treatment system (1) according to the 16th embodiment of the present invention may include a second wastewater treatment unit (612b) for treating wastewater delivered from a first wastewater treatment unit (612a). The second wastewater treatment unit (612b) may include a membrane treatment unit (611) provided with a membrane (611a) that selectively permeates fuel contained in the wastewater from which fuel has been separated in the first wastewater treatment unit (612a).

[0266] One area of ​​the membrane processing unit (611) separated by the membrane (611a) may be connected to a neutralizing agent storage tank (622). The neutralizing agent storage tank (622) may supply a neutralizing agent to one area of ​​the membrane processing unit (611). The neutralizing agent may collect gaseous fuel that has passed through the membrane (611a) in one area of ​​the membrane processing unit (611). Specifically, the neutralizing agent of the membrane processing unit (611) may absorb gaseous fuel. A neutralizing agent pump (not shown in the symbol) that supplies a neutralizing agent to the membrane processing unit (611) may be provided between the neutralizing agent storage tank (622) and the membrane processing unit (611).

[0267] The fuel separated in the above membrane treatment unit (611) can be discharged to the outside. The wastewater from which the fuel has been separated in the above membrane treatment unit (611) can be transferred to the second auxiliary collection unit (650a).

[0268] The fuel treatment system (1) according to the present embodiment may have a wastewater treatment unit composed of a plurality of wastewater treatment units. In the wastewater treatment unit, heat treatment and membrane treatment may be performed. Therefore, the amount of neutralizing agent used during membrane treatment may be reduced.

[0269]

[0270] FIG. 17 is a conceptual diagram of a fuel processing system according to the 17th embodiment of the present invention.

[0271] Referring to FIG. 17, a fuel treatment system (1) according to the 17th embodiment of the present invention may include a wastewater treatment unit (600) that treats wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) may include a first wastewater treatment unit (612a) that separates fuel by heating the wastewater. The first wastewater treatment unit (612a) may be a heating treatment unit (612) that separates fuel by heating the wastewater.

[0272] At least a portion of the wastewater discharged from the fuel collection unit (500) may be transferred to the auxiliary collection unit (650). Specifically, an auxiliary collection unit (650) may be provided downstream of the first wastewater treatment unit (612a), and at least a portion of the wastewater discharged from the first wastewater treatment unit (612a) may be transferred to the auxiliary collection unit (650).

[0273] At least a portion of the wastewater discharged from the first wastewater treatment unit (612a) may be transferred to the fuel collection unit (500). Additionally, at least a portion of the wastewater discharged from the auxiliary collection unit (650) may be transferred to the fuel collection unit (500).

[0274] The fuel collection unit (500) can degas the wastewater delivered from the first wastewater treatment unit (612a) or the auxiliary collection unit (650). Specifically, the fuel collection unit (500) can absorb or dissolve fuel through a cleaning agent and degas the wastewater to separate fuel from the wastewater.

[0275] In detail, the fuel collection unit (500) is supplied with treatment gas internally, and the treatment gas can degas the wastewater delivered from the first wastewater treatment unit (612a). More specifically, the wastewater delivered from the first wastewater treatment unit (612a) is supplied to the upper part of the fuel collection unit (500), and the treatment gas can be supplied to the lower part of the fuel collection unit (500). The wastewater delivered from the first wastewater treatment unit (612a) can be supplied into the fuel collection unit (500) through the cleaning agent supply unit (511).

[0276] A second auxiliary collection unit (650a) to which wastewater degassed from the fuel collection unit (500) is delivered may be provided downstream of the fuel collection unit (500). Specifically, a wastewater tank (520) for storing wastewater discharged from the fuel collection unit (500) is provided downstream of the fuel collection unit (500), and wastewater degassed from the fuel collection unit (500) may be delivered to the second auxiliary collection unit (650a) between the fuel collection unit (500) and the wastewater tank (520).

[0277]

[0278] FIG. 18 is a conceptual diagram of a fuel processing system according to the 18th embodiment of the present invention.

[0279] Referring to FIG. 18, a fuel treatment system (1) according to the 18th embodiment of the present invention includes a wastewater treatment unit (600) that treats wastewater stored in the fuel collection unit (500); and the wastewater treatment unit (600) may include a first wastewater treatment unit (612a) that heats the wastewater to separate fuel; and a condensation heat exchange unit (632) that condenses the fuel separated in the first wastewater treatment unit (612a).

[0280] At least a portion of the fuel condensed in the condensation heat exchanger (632) may be circulated to the first wastewater treatment unit (612a). At least a portion of the fuel condensed in the condensation heat exchanger (632) may be circulated to the heat treatment unit (612). At least a portion of the fuel condensed in the condensation heat exchanger (632) may be stored in the condensation storage unit (623). The fuel stored in the condensation storage unit (623) may be delivered to a demand source (200) or an exhaust treatment unit (700), etc.

[0281]

[0282] FIG. 19 is a conceptual diagram of a fuel processing system according to the 19th embodiment of the present invention.

[0283] Referring to FIG. 19, a fuel treatment system (1) according to the 19th embodiment of the present invention includes a wastewater treatment unit (600) that treats wastewater stored in a fuel collection unit (500); the wastewater treatment unit (600) includes a heat treatment unit (612) that heats the wastewater to separate fuel, and the heat treatment unit (612) includes a heating unit (612a) and a concentration unit (612c) that transfers the fuel separated from the heating unit (612a) to the condensation heat exchange unit (632); and the fuel separated from the heating unit (612a) can be moved to the concentration unit (613c) which has a relatively low pressure.

[0284] The heating unit (612a) and the concentration unit (613c) may be connected to a concentration line (L47). Fuel separated from the heating unit (612a) may be transferred to the concentration unit (613c) along the concentration line (L47). Since the heating unit (612a) has a higher pressure than the concentration unit (613c), the fuel vapor from the heating unit (612a) may be transferred to the concentration unit (613c).

[0285] The above concentration unit (613c) is provided with a condensation heat exchanger (632) that condenses the fuel delivered from the heating unit (612a), and the fuel condensed in the condensation heat exchanger (632) can be delivered to the concentration unit (613c).

[0286] The above concentration unit (613c) may be provided with a concentration pump (612d) that circulates the condensed fuel to the heating unit (612a). The concentration pump (612d) can deliver the condensed fuel to the heating unit (612a) which is at a relatively high pressure.

[0287] The concentration section (613c) may be formed structurally separated from the heating section (612a). Therefore, the heating section (612a) and the concentration section (613c) may be spaced apart. Since the heating section (612a) and the concentration section (613c) are formed separately, the flexibility of spatial arrangement can be increased compared to when the heating section (612a) and the concentration section (613c) are formed as a single unit. Additionally, since the heating section (612a) and the concentration section (613c) have a relatively lower height compared to when they are formed as a single unit, stability against the shaking of the ship can also be improved when deployed on a ship.

[0288]

[0289] FIG. 20 is a conceptual diagram of a fuel processing system according to the 20th embodiment of the present invention.

[0290] Referring to FIG. 20, a fuel processing system (1) according to the 20th embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and a wastewater treatment unit (600) that processes wastewater stored in the fuel collection unit (500). The wastewater treatment unit (600) comprises a heat treatment unit (612) that heats the wastewater to separate the fuel. The heat treatment unit (612) comprises a plurality of treatment units (613, 614, 615) arranged in parallel.

[0291] In detail, the heat treatment unit (612) may include a plurality of treatment units (613, 614, 615) arranged horizontally side by side. The heat treatment unit (612) may include a plurality of treatment units (613, 614, 615) arranged from one side to the other.

[0292] The above-mentioned heat treatment unit (612) may include a casing (6120) forming the exterior, and a plurality of treatment units (613, 614, 615) may be provided inside the casing (6120). A plurality of treatment units (613, 614, 615) arranged side by side may be provided inside the casing (6120). Although the drawing shows three treatment units (613, 614, 615), the present invention is not limited thereto.

[0293] The above casing (6120) may have a tray or packing provided inside. The tray or packing may form layers in the vertical direction. Specifically, the processing unit (613, 614, 615) may include a tray or packing.

[0294] Wastewater may be introduced into one side of the casing (6120). The wastewater may be heated within the casing (6120) and fuel may be separated. Specifically, fuel may be separated from the tray or the packing.

[0295] The heat treatment unit (612) includes a partition (6121) that separates the plurality of treatment units (613, 614, 615); the partition (6121) may include a lower partition (6121a) that extends upward from the lower part of the heat treatment unit (612) and forms a gas flow path (6123) at the top; and an upper partition (6121b) that is formed facing the lower partition (6121a) and extends downward from the upper part of the heat treatment unit (612).

[0296] The lower bulkhead (6121a) may extend from the bottom upward to a height spaced apart from the top. The upper bulkhead (6121b) may extend from the top downward to a position spaced apart from the bottom.

[0297] The above bulkhead (6121) may be provided inside the casing (6120). Specifically, the bulkhead (6121) may include: a lower bulkhead (6121a) extending upward from the lower part of the casing (6120) and having a gas flow path (6123) formed at the top; and an upper bulkhead (6121b) formed facing the lower bulkhead (6121a) and extending downward from the upper part of the casing (6120).

[0298] The lower partition (6121a) can control the flow of wastewater within the heat treatment unit (612). Wastewater can move in one direction within the heat treatment unit (612). At this time, the flow of wastewater introduced from one side can be restricted to the other side by the lower partition (6121a). Specifically, the lower partition (6121a) can restrict the flow of wastewater at the bottom of the heat treatment unit (612).

[0299] Additionally, the upper bulkhead (6121b) can control the flow of fuel vapor within the heat treatment unit (612). Specifically, the fuel vapor moving along the gas flow path (6123) of the heat treatment unit (612) may be restricted from moving upward by the upper bulkhead (6121b). At this time, the fuel vapor may move to the lower part of the heat treatment unit (612) along the upper bulkhead (6121b). Specifically, the fuel vapor may move between the upper bulkhead (6121b) and the lower bulkhead (6121a).

[0300] Fuel vapor can move from one side of the heat treatment unit (612) into which wastewater from the heat treatment unit (612) flows. Fuel vapor can move from one side of the heat treatment unit (612) to the other side due to a pressure difference. That is, fuel vapor can have a higher pressure at the inlet end where the inlet is located compared to the outlet end where the outlet is located. Additionally, fuel vapor can have a lower temperature at the inlet end where the inlet is located compared to the outlet end where the outlet is located.

[0301] The lower partition (6121a) may be positioned closer to the inlet (not shown) through which wastewater flows in, relative to the upper partition (6121b).

[0302] The fuel processing system (1) may include a processing unit heat exchanger (6122) that is provided between the plurality of processing units (613, 614, 615) and controls the temperature of the fuel passing between the plurality of processing units (613, 614, 615).

[0303] The above-mentioned processing unit heat exchanger (6122) may be provided between partition walls (6121). Specifically, the above-mentioned processing unit heat exchanger (6122) may be provided between the lower partition wall (6121a) and the upper partition wall (6121b). The above-mentioned processing unit heat exchanger (6122) may be arranged vertically. The temperature of the fuel vapor can be controlled by the above-mentioned processing unit heat exchanger (6122). For example, the above-mentioned processing unit heat exchanger (6122) can lower the temperature of the fuel vapor. Accordingly, the cleaning agent contained in the fuel vapor that has passed through the above-mentioned processing unit heat exchanger (6122) can be separated.

[0304] The treatment units (613, 614, 615) may include a first treatment unit (613), a second treatment unit (614), and a third treatment unit (615) arranged in order from the heat treatment unit (612). Fuel vapor separated from wastewater may move from the first treatment unit (613) toward the third treatment unit (615).

[0305] The wastewater treatment unit (600) includes a reboiler (631) that reheats wastewater from which fuel has been separated in the heat treatment unit (612); and at least a portion of the wastewater heated in the reboiler (631) may be circulated to the heat treatment unit (612). The reboiler (631) may be provided in the first treatment unit (613). The reboiler (631) may heat the wastewater and supply at least a portion of the wastewater to the first treatment unit (613). Additionally, at least a portion of the wastewater heated in the reboiler (631) may be delivered to an auxiliary collection unit (650).

[0306] The wastewater treatment unit (600) includes a condensation heat exchanger (632) that condenses fuel separated from the heat treatment unit (612); and at least a portion of the fuel condensed in the condensation heat exchanger (632) may be circulated to the heat treatment unit (612). The condensation heat exchanger (632) may be provided in the third treatment unit (613). At least a portion of the fuel condensed in the condensation heat exchanger (632) may be transferred to a condensation storage unit (623) and stored in the condensation storage unit (623). The fuel in the condensation storage unit (623) may be transferred to a demand source (200), etc. Additionally, at least a portion of the fuel condensed in the condensation heat exchanger (632) may be circulated to the third treatment unit (613).

[0307] The heat exchanger (6122) of the above-mentioned processing unit can cool the fuel vapor to collect the cleaning agent contained in the fuel vapor. The condensation heat exchanger (632) can cool the fuel vapor to collect the fuel contained in the fuel vapor. Since the condensation heat exchanger (632) collects fuel by condensing the fuel vapor, it can be operated at a relatively lower temperature compared to the heat exchanger (6122) of the above-mentioned processing unit for cooling and condensing the cleaning agent.

[0308] Since the heat exchanger (6122) of the above processing unit condenses the cleaning agent contained in the fuel vapor, the use of refrigerant in the condensation heat exchanger (632) is reduced and the condensation efficiency of the fuel vapor in the condensation heat exchanger (632) can be improved.

[0309] Wastewater from which fuel has been separated may be collected at the lower part of the heat treatment unit (612). Wastewater from which fuel has been separated in the heat treatment unit (612) may move in the opposite direction to the direction of wastewater supplied to the heat treatment unit (612). For example, wastewater supplied to the heat treatment unit (612) may move from the first treatment unit (613) to the third treatment unit (615), and wastewater from which fuel has been separated in the heat treatment unit (612) may move from the third treatment unit (615) to the first treatment unit (613).

[0310] A treatment unit pump (6124) may be provided in the heat treatment unit (612). The treatment unit pump (6124) can transfer fuel-separated wastewater from a downstream treatment unit to an upstream treatment unit. For example, the treatment unit pump (6124) can transfer fuel-separated wastewater from a third treatment unit (615) to a second treatment unit (614). Additionally, the treatment unit pump (6124) can transfer fuel-separated wastewater from a second treatment unit (614) to a first treatment unit (613).

[0311] The fuel processing system (1) according to the present embodiment can process a large amount of fuel by arranging a plurality of processing units, and stability can be improved by being arranged horizontally in an elongated manner compared to being arranged vertically in an elongated manner. In addition, the fuel separation efficiency can be increased by providing an elongated flow path for fuel vaporization gas inside the heating processing unit.

[0312] FIG. 21 is a conceptual diagram of a fuel processing system according to the 21st embodiment of the present invention.

[0313] Referring to FIG. 21, a fuel processing system (1) according to the 21st embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and an auxiliary collection unit (650) to which at least a portion of the wastewater discharged from the fuel collection unit (500) is delivered. The fuel collection unit (500) degasses the wastewater stored in the fuel collection unit (500) to lower the concentration of fuel contained in the wastewater delivered to the auxiliary collection unit (650).

[0314] The above fuel collection unit (500) can absorb or dissolve fuel through a cleaning agent and separate fuel from wastewater by degassing wastewater.

[0315] In detail, the fuel collection unit (500) is supplied with treatment gas internally, and the treatment gas can degas the wastewater stored in the fuel collection unit (500). More specifically, the wastewater stored in the fuel collection unit (500) is supplied to the upper part of the fuel collection unit (500), and the treatment gas can be supplied to the lower part of the fuel collection unit (500).

[0316] At least a portion of the wastewater discharged from the fuel collection unit (500) may be circulated to the fuel collection unit (500). The wastewater degassed in the fuel collection unit (500) may be supplied into the fuel collection unit (500) through the cleaning agent supply unit (511). Specifically, at least a portion of the wastewater discharged from the fuel collection unit (500) may be sprayed inside the fuel collection unit (500).

[0317] Additionally, the fuel gas generated by degassing in the fuel collection unit (500) can be supplied to the exhaust treatment unit (700). The fuel gas directly supplied to the exhaust treatment unit (700) can be used as a reducing agent for exhaust gas. Here, the fuel gas may be ammonia gas, but the present invention is not limited thereto.

[0318]

[0319] An auxiliary collection unit (650) to which wastewater degassed from the fuel collection unit (500) is delivered may be provided downstream of the fuel collection unit (500).

[0320] In detail, a wastewater tank (520) for storing wastewater discharged from the fuel collection unit (500) is provided downstream of the fuel collection unit (500), and wastewater degassed from the fuel collection unit (500) can be transferred to the auxiliary collection unit (650) between the fuel collection unit (500) and the wastewater tank (520).

[0321] More specifically, a wastewater line (not shown) connecting the fuel collection unit (500) and the wastewater tank (520) may be provided, and an auxiliary collection unit line (not shown) branching from the wastewater line and connected to the auxiliary collection unit (650) may be provided. The wastewater degassed in the fuel collection unit (500) may be delivered to the auxiliary collection unit (650) along the auxiliary collection unit line.

[0322] A concentration sensor (not shown) may be provided in the auxiliary collection unit (650). The concentration sensor may measure the fuel concentration of wastewater stored in the auxiliary collection unit (650). Depending on the fuel concentration measured by the concentration sensor, the fuel collection unit (500) may determine whether to discharge fuel vapor to the outside. For example, if the fuel concentration contained in the wastewater is below a certain value, fuel vapor may be discharged to the outside from the fuel collection unit (500). The concentration sensor may be provided in the fuel collection unit (500) or the wastewater tank (520), but the present invention is not limited thereto.

[0323] At least a portion of the wastewater stored in the wastewater tank (520) can be transferred to the fuel collection unit (500). The degassed wastewater can be reused as a cleaning agent in the fuel collection unit (500).

[0324] In the fuel treatment system (1) according to the present embodiment, fuel is collected in a fuel collection unit (500), and degassing treatment is performed on the wastewater collected in the lower part of the fuel collection unit (500), so that the wastewater discharged from the fuel collection unit (500) may have a low fuel concentration.

[0325]

[0326] FIG. 22 is a conceptual diagram of a fuel processing system according to the 22nd embodiment of the present invention.

[0327] Referring to FIG. 22, a fuel treatment system (1) according to the 22nd embodiment of the present invention includes an exhaust treatment unit (700) that chemically treats pollutants contained in exhaust gas discharged from the demand source (200); and at least a portion of the exhaust gas may be delivered to the exhaust treatment unit (700) depending on the content of fuel contained in the exhaust gas discharged from the fuel collection unit (500).

[0328] Depending on the content of fuel contained in the exhaust gas discharged from the fuel collection unit (500), at least a portion of the exhaust gas may be delivered to the exhaust treatment unit (700). Specifically, if the concentration of fuel contained in the exhaust gas discharged from the fuel collection unit (500) is greater than a certain value, at least a portion of the exhaust gas may be delivered to the exhaust treatment unit (700). That is, if the fuel is at a high concentration, fuel may be supplied to the exhaust treatment unit (700). Conversely, if the fuel is at a low concentration, fuel may be discharged from the fuel collection unit (500) to the outside.

[0329]

[0330] FIG. 23 is a conceptual diagram of a fuel processing system according to the 23rd embodiment of the present invention.

[0331] Referring to FIG. 23, the fuel processing system (1) according to the 23rd embodiment of the present invention may transfer at least a portion of the exhaust gas to the demand location (200) depending on the content of the fuel contained in the exhaust gas discharged from the fuel collection unit (500). If the concentration of the fuel contained in the exhaust gas discharged from the fuel collection unit (500) is greater than or equal to a certain value, at least a portion of the exhaust gas may be transferred to the demand location (200). That is, if the fuel is at a high concentration, the fuel may be supplied to the demand location (200). Conversely, if the fuel is at a low concentration, the fuel may be discharged from the fuel collection unit (500) to the outside. The exhaust gas transferred to the demand location (200) may be processed by incineration.

[0332] FIG. 24 is a conceptual diagram of a fuel processing system according to the 24th embodiment of the present invention.

[0333] Referring to FIG. 24, a fuel processing system (1) according to the 24th embodiment of the present invention comprises: a fuel flow unit (100) that supplies fuel to a demand place (200); a fuel collection unit (500) that processes fuel discharged from the demand place (200) or the fuel flow unit (100) using a cleaning agent; and a reducing agent storage unit (910) that stores a reducing agent for processing exhaust gas discharged from the demand place (200).

[0334] The fuel treatment system (1) includes an exhaust treatment unit (700) that chemically treats pollutants contained in exhaust gas discharged from the demand source (200); and the fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the exhaust treatment unit (700). The fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the exhaust treatment unit (700) depending on whether the demand source (200) is operated in a pollution control area. Here, the pollution control area may be an Emission Control Area.

[0335] For example, the fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the exhaust treatment unit (700) when the demand source (200) is operated in a non-pollution control zone.

[0336] Additionally, the reducing agent storage unit (910) may transfer the reducing agent to the exhaust treatment unit (700) depending on whether the demand source (200) is operating in a pollution control zone. For example, if the demand source (200) is operating in a pollution control zone, the reducing agent storage unit (910) may transfer at least a portion of the reducing agent stored in the reducing agent storage unit (910) to the exhaust treatment unit (700). Here, the reducing agent may be urea, but the present invention is not limited thereto.

[0337] The fuel processing system (1) may include a location verification unit (not shown). Location information where the demand source (200) is operating can be verified by the location verification unit. Specifically, the fuel processing system (1) is provided on a ship, and location information where the ship is operating can be verified by the location verification unit.

[0338] The above positioning unit may be a Global Navigation Satellite System (GNSS). Specifically, the above positioning unit may utilize multiple satellites such as the Global Positioning System (GPS), GLONASS, and Galileo.

[0339] The fuel processing system (1) may include a pollution control zone determination unit (not shown) that determines whether the demand source (200) is located in a pollution control zone based on location information where the demand source (200) is operating. Specifically, the pollution control zone determination unit may determine whether the demand source (200) is operating in a pollution control zone by comparing and analyzing the location information where the demand source (200) is operating, confirmed by the location verification unit, with previously stored pollution control zone information.

[0340] When the above-mentioned demand source (200) is operated in a pollution control zone, the reducing agent storage unit (910) can be controlled to supply the reducing agent to the exhaust treatment unit (700).

[0341] The exhaust treatment unit (700) and the fuel collection unit (500) may be connected by a fuel reduction line (L60). Additionally, the exhaust treatment unit (700) and the wastewater tank (520) may be connected by a fuel reduction line (L60). The fuel reduction line (L60) may be connected to the exhaust line (L50). Specifically, the fuel reduction line (L60) may be connected to the exhaust line (L50) upstream of the exhaust treatment unit (700).

[0342] The fuel collection unit (500) can supply wastewater to the exhaust treatment unit (700) along the fuel reduction line (L60). Additionally, the reducing agent storage unit (910) can supply a reducing agent to the exhaust treatment unit (700) along the fuel reduction line (L60). That is, the line connecting the fuel collection unit (500) to the exhaust treatment unit (700) and the line connecting the reducing agent storage unit (910) to the exhaust treatment unit (700) can be integrated.

[0343] A reducing agent supply pump (P1), a filter section (F1), an ion removal section (920), a reducing agent supply valve (not shown in the symbol), and a flow meter (flow sensor, FT) may be provided on the fuel reduction line (L60). The reducing agent supply pump (P1) or the reducing agent supply valve (V1) may be controlled according to the flow rate measured by the flow meter (FT). The flow rate of the treatment liquid supplied to the exhaust treatment section (700) may be controlled by the reducing agent supply pump (P1) or the reducing agent supply valve (V1).

[0344] The ion removal unit (920) can remove ionic substances contained in wastewater discharged from the fuel collection unit (500). Additionally, the ion removal unit (920) can remove ionic substances from wastewater discharged from the fuel collection unit (500). Here, the ionic substances may be metal ions. For example, the ionic substances may be metal ions such as calcium, sodium, magnesium, or iron.

[0345] The above ionic material can reduce the lifespan of the catalyst in the exhaust treatment unit (700). The ion removal unit (920) can increase the lifespan of the catalyst in the exhaust treatment unit (700) by removing the above ionic material.

[0346] The ion removal unit (920) may be provided upstream of the exhaust treatment unit (700). Specifically, the ion removal unit (920) may be provided on the fuel reduction line (L60). The ion removal unit (920) may be provided downstream of the point where the reducing agent supply line (L770) joins.

[0347] The ion removal unit (920) may include an ion-permeable membrane or an ion exchange resin. Preferably, the ion removal unit (920) may be an ion-permeable membrane through which metal ions selectively pass, or an ion exchange resin to which metal ions selectively bind. The ion removal unit (920) may selectively remove metal ions relative to ammonium ions. The ion removal unit (920) may be regenerated when its processing capacity is depleted.

[0348] For example, the ion removal unit (920) may be an electrodialysis device including a cation permeable membrane or an anion permeable membrane. Ionic substances, such as metal ions, may pass through and be removed via the cation permeable membrane. The ion removal rate of the electrodialysis device may be controlled according to the output.

[0349] Additionally, the ion removal unit (920) may be an ion exchange resin, and the ion exchange resin may have functional groups that bind to ionic substances such as metal ions. The ion exchange resin may be a cation exchange resin. The ion exchange resin may capture ionic substances contained in the cleaning agent.

[0350] The filter unit (F1) is provided upstream of the exhaust treatment unit (700) and can remove foreign substances. The filter unit (F1) can be provided upstream of the ion removal unit (920). The filter unit (F1) can remove foreign substances contained in the recovered fuel. By removing foreign substances with the filter unit (F1), the lifespan of the ion removal unit (920) is extended, and the lifespan of the catalyst in the exhaust treatment unit (700) can also be extended.

[0351]

[0352] FIG. 25 is a conceptual diagram of a fuel processing system according to the 25th embodiment of the present invention.

[0353] Referring to FIG. 25, the fuel processing system (1) according to the 25th embodiment of the present invention has the fuel collection unit (500) transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the reducing agent storage unit (910). In detail, the fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the reducing agent storage unit (910) depending on whether the demand source (200) is operated in a pollution control zone.

[0354] The fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the reducing agent storage unit (910) when the demand location (200) is operated in a non-pollution control zone. Wastewater can be stored in the reducing agent storage unit (910) when the demand location (200) is operated in a non-pollution control zone.

[0355] It includes an exhaust treatment unit (700) that chemically treats pollutants contained in exhaust gas emitted from the above demand source (200); and the fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the exhaust treatment unit (700) when the above demand source (200) is operated in a pollution control zone.

[0356] The above-mentioned reducing agent storage unit (910) may receive wastewater discharged from the fuel collection unit (500) or receive fuel from the storage unit (300). Specifically, the above-mentioned reducing agent storage unit (910) may receive wastewater discharged from the fuel collection unit (500) or receive fuel from the storage unit (300) along the reducing agent replenishment lines (L71, L72). Specifically, wastewater discharged from the fuel collection unit (500) may be delivered to the reducing agent storage unit (910) through the first reducing agent replenishment line (L71). Additionally, fuel discharged from the storage unit (300) may be delivered to the reducing agent storage unit (910) through the second reducing agent replenishment line (L72).

[0357] A reducing agent supply pump (P1), a filter section (F1), an ion removal section (920), a reducing agent supply valve (not shown in the symbol), and a flow meter (flow sensor, FT) may be provided on the fuel reduction line (L60). The reducing agent supply pump (P1) or the reducing agent supply valve (V1) may be controlled according to the flow rate measured by the flow meter (FT). The flow rate of the treatment liquid supplied to the exhaust treatment section (700) may be controlled by the reducing agent supply pump (P1) or the reducing agent supply valve (V1).

[0358] In detail, a first reducing agent supply pump (P1), a second reducing agent supply pump (P2), a first filter section (F1), and a second filter section (F2) may be provided on the fuel reduction line (L60). The first reducing agent supply pump (P1) and the first filter section (F1) may be provided between the fuel collection section (500) and the reducing agent storage section (910). The second reducing agent supply pump (P2) and the second filter section (F2) may be provided downstream of the reducing agent storage section (910).

[0359] The fuel treatment system (1) may include an ion removal unit (920) for removing ionic substances contained in wastewater stored in the fuel collection unit (500). The ion removal unit (920) may be provided downstream of the fuel collection unit (500). Specifically, the ion removal unit (920) may be provided between the fuel collection unit (500) and the reducing agent storage unit (910). The reducing agent storage unit (910) may store wastewater from which ionic substances have been removed by the ion removal unit (920).

[0360] The above-mentioned reducing agent storage unit (910) may be provided with a concentration sensor for measuring the fuel concentration contained in wastewater. The concentration sensor may measure the concentration of fuel, but may also determine the concentration by measuring density, electrical conductivity, refractive index, or pH, and the present invention is not limited thereto. The fuel concentration of the reducing agent storage unit (910) may be controlled according to the fuel concentration measured by the concentration sensor.

[0361] The fuel treatment system (1) according to the present embodiment can store wastewater discharged from the fuel collection unit (500) as a reducing agent in the reducing agent storage unit (910) when the demand source (200) is operated in a non-pollution control zone. Conversely, when the demand source (200) is operated in a pollution control zone, the reducing agent stored in the reducing agent storage unit (910) can be supplied to the exhaust treatment unit (700). Additionally, when the demand source (200) is operated in a non-pollution control zone, the wastewater discharged from the fuel collection unit (500) can be treated in the incineration unit, the exhaust treatment unit (700), etc.

[0362]

[0363] FIG. 26 is a conceptual diagram of a fuel processing system according to the 26th embodiment of the present invention.

[0364] Referring to FIG. 26, a fuel treatment system (1) according to the 26th embodiment of the present invention may include a wastewater heat exchanger (H1) that controls the temperature of wastewater transferred from the fuel collection unit (500) to the exhaust treatment unit (700).

[0365] The wastewater heat exchanger (H1) may be provided downstream of the reducing agent storage unit (910). Specifically, the wastewater heat exchanger (H1) may be provided downstream of the ion removal unit (920).

[0366] The wastewater heat exchanger (H1) can heat and vaporize the reducing agent of the reducing agent storage unit (910) or the wastewater of the fuel collection unit (500) and supply it to the exhaust treatment unit (700). Specifically, when the demand source (200) is operated in a pollution control zone, the wastewater heat exchanger (H1) can vaporize the reducing agent of the reducing agent storage unit (910) or the wastewater of the fuel collection unit (500) and supply it to the exhaust treatment unit (700).

[0367] Additionally, the fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the reducing agent storage unit (910) when the demand location (200) is operated in a non-pollution control zone. When the demand location (200) is operated in a non-pollution control zone, the wastewater can be stored as a reducing agent in the reducing agent storage unit (910).

[0368] In the fuel treatment system (1) according to the present embodiment, when wastewater containing low-concentration fuel is supplied in a liquid state, the exhaust gas temperature is lowered by the heat of vaporization, and the temperature of the exhaust treatment unit (700) can drop below the reaction temperature of the exhaust treatment unit (700). Since the reducing agent in the reducing agent storage unit (910) is vaporized and supplied to the exhaust treatment unit (700), the reducing agent vaporizes in the exhaust treatment unit (700), thereby preventing the temperature of the exhaust treatment unit (700) from being lowered.

[0369]

[0370] FIG. 27 is a conceptual diagram of a fuel processing system according to the 27th embodiment of the present invention.

[0371] Referring to FIG. 27, a fuel treatment system (1) according to the 27th embodiment of the present invention includes a wastewater treatment unit (600) that treats wastewater stored in the fuel collection unit (500); and the wastewater treatment unit (600) may include a heat treatment unit (612) that heats the wastewater to separate the fuel.

[0372] It may include a reheating unit for heat treating wastewater from which fuel has been separated in the heat treatment unit (612); a degassing unit for degassing wastewater from which fuel has been separated in the heat treatment unit (612); a biological treatment unit for biologically treating wastewater from which fuel has been separated in the heat treatment unit (612); or a membrane treatment unit provided with a membrane that selectively permeates fuel contained in wastewater from which fuel has been separated in the heat treatment unit (612).

[0373] Wastewater treated in the reheating unit, the degassing unit, the bio-treatment unit, or the membrane treatment unit can be supplied to the fuel collection unit (500). Specifically, wastewater treated in the reheating unit, the degassing unit, the bio-treatment unit, or the membrane treatment unit can be delivered to the cleaning agent supply unit (511) of the fuel collection unit (500).

[0374] The above-mentioned heat treatment unit (612) can heat the wastewater of the fuel collection unit (500) to separate fuel from the wastewater. Specifically, the above-mentioned heat treatment unit (612) can heat the wastewater of the fuel collection unit (500) to separate fuel from the wastewater when the demand location (200) is operated in a non-pollution control zone.

[0375] The fuel separated from the heat treatment unit (612) can be transferred to the fuel flow unit (100). Specifically, the fuel separated from the heat treatment unit (612) can be transferred to the collecting tank (114).

[0376] Additionally, the fuel collection unit (500) can supply wastewater to the exhaust treatment unit (700) when the demand source (200) is operated in a pollution control zone. At this time, the concentration of fuel can be measured by a concentration sensor (not shown in the symbol) provided in the fuel collection unit (500), and fuel from the storage unit (300) can be supplied to the reducing agent storage unit (910) according to the concentration of fuel. Additionally, a cleaning agent can be supplied to the reducing agent storage unit (910) according to the concentration of fuel. Thus, the concentration of fuel can be controlled in the reducing agent storage unit (910).

[0377] Additionally, the fuel collection unit (500) can transfer at least a portion of the wastewater stored in the fuel collection unit (500) to the reducing agent storage unit (910) when the demand location (200) is operated in a non-pollution control zone. When the demand location (200) is operated in a non-pollution control zone, the wastewater can be stored as a reducing agent in the reducing agent storage unit (910).

[0378]

[0379] As such, a fuel treatment system according to one embodiment of the present invention can safely recover fuel using a cleaning agent. The wastewater generated at this time can be treated again so that fuel can be recovered from the wastewater.

[0380] In addition, a fuel processing system according to one embodiment of the present invention can control the operation of a fuel collection unit according to the shutdown conditions of the demand source. Furthermore, the fuel processing system can control the operation of a fuel collection unit according to the amount of fuel recovered. Accordingly, the amount of cleaning agent used in the fuel collection unit can be reduced, and the amount of wastewater generated therefrom can be reduced.

[0381] In addition, a fuel treatment system according to one embodiment of the present invention separates fuel contained in wastewater by a drying method, and the cleaning agent generated during this process can be reused in the fuel collection unit. Therefore, the fuel treatment system can reduce the amount of cleaning agent used and reduce the production volume of the cleaning agent.

[0382] In addition, a fuel treatment system according to one embodiment of the present invention can selectively separate fuel from wastewater through a membrane treatment unit. The cleaning agent generated during this process can be reused in a fuel collection unit. Therefore, the fuel treatment system can reduce the amount of cleaning agent used and reduce the production volume of the cleaning agent.

[0383] In addition, a fuel treatment system according to one embodiment of the present invention can supply wastewater generated during the fuel collection process to a demand source for treatment. However, the fuel treatment system may supply wastewater to the demand source within the range in which the demand source can treat the wastewater. Since the wastewater is treated at the demand source, wastewater treatment facilities, etc., may be omitted.

[0384] In addition, a fuel processing system according to one embodiment of the present invention can separate fuel by heat-treating wastewater generated during the fuel collection process. The separated fuel is concentrated, and the concentrated fuel can be used at demand points, etc.

[0385] In addition, a fuel treatment system according to one embodiment of the present invention comprises a heat treatment unit for heat-treating wastewater, which is composed of a plurality of treatment units, and the treatment units may be arranged horizontally on the ground where the fuel treatment system is placed. This may be more stable compared to the treatment units being arranged vertically, and stability may be particularly important when the fuel treatment system is installed on a moving structure such as a ship.

[0386] In addition, a fuel processing system according to one embodiment of the present invention can collect fuel from a fuel collection unit. Furthermore, since degassing treatment can be performed inside the fuel collection unit, the fuel concentration of wastewater discharged from the fuel collection unit can be reduced. Therefore, a device for recovering fuel from wastewater can be omitted.

[0387] In addition, a fuel treatment system according to one embodiment of the present invention may use wastewater collected in a fuel collection unit as a reducing agent in an exhaust treatment unit depending on the location where the demand source is operated. For example, if the location where the demand source is operated is a non-pollution control zone, the wastewater collected in the fuel collection unit may be transferred to a reducing agent storage unit and stored in the reducing agent storage unit.

[0388]

[0389] In addition to the embodiments described above, the present invention encompasses all embodiments resulting from a combination of the above embodiments and known technology.

[0390] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention, and the invention is not limited thereto. It will be apparent that modifications or improvements can be made by those skilled in the art within the technical scope of the invention.

[0391] All simple variations or modifications of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

Claims

1. A fuel flow section that supplies fuel to a demand point; A fuel collection unit that processes fuel discharged from the above demand source or the above fuel flow unit using a cleaning agent; and It includes a reducing agent storage unit for storing a reducing agent for treating exhaust gas discharged from the above-mentioned demand source; and The above fuel collection unit is, A fuel processing system that transfers at least a portion of the wastewater stored in the fuel collection unit to a reducing agent storage unit.

2. In Paragraph 1, The above fuel collection unit is, A fuel processing system that transfers at least a portion of the wastewater stored in the fuel collection unit to the reducing agent storage unit depending on whether the above demand source is operated in a pollution control area.

3. In Paragraph 1, The above fuel collection unit is, A fuel treatment system that transfers at least a portion of the wastewater stored in the fuel collection unit to the reducing agent storage unit when the above demand site is operated in a non-pollution control area.

4. In Paragraph 1, It includes an exhaust treatment unit that chemically treats pollutants contained in exhaust gas emitted from the above-mentioned demand source, and The above fuel collection unit is, A fuel treatment system that transfers at least a portion of the wastewater stored in the fuel collection unit to the exhaust treatment unit when the above demand source is operated in a pollution control area.

5. In Paragraph 4, A fuel treatment system comprising: a wastewater heat exchanger that controls the temperature of wastewater transferred from the fuel collection unit to the exhaust treatment unit.

6. In Paragraph 1, It includes an ion removal unit that removes ionic substances contained in wastewater stored in the fuel collection unit; and The above reducing agent storage unit is, A fuel treatment system that stores wastewater from which ionic substances have been removed by the above-mentioned ion removal unit.

7. In Paragraph 1, A wastewater treatment unit that processes wastewater stored in the fuel collection unit; is included, The above wastewater treatment unit is, A fuel treatment system comprising a heat treatment unit that separates fuel by heating wastewater.

8. In Paragraph 7, A reheating unit for heating and treating wastewater from which fuel has been separated in the above-mentioned heating treatment unit; A degassing unit that degasses wastewater from which fuel has been separated in the above-mentioned heat treatment unit; A biotreatment unit that biologically treats wastewater from which fuel has been separated in the above-mentioned heat treatment unit; or A fuel treatment system comprising: a membrane treatment unit provided with a membrane that selectively permeates fuel contained in wastewater from which fuel has been separated in the heat treatment unit.

9. In Paragraph 8, A fuel treatment system in which wastewater treated in the above-mentioned reheating unit, above-mentioned degassing unit, above-mentioned biotreatment unit, or above-mentioned membrane treatment unit is supplied to the above-mentioned fuel collection unit.

10. In Paragraph 1, A location verification unit that uses a satellite to verify location information where the above-mentioned demand source is in operation; and A fuel processing system comprising: a pollution control zone determination unit that determines whether the demand source is located in a pollution control zone based on location information where the demand source is operated.

11. A vessel comprising the fuel processing system of paragraph 1.

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