System for discharging ammonia gas and reducing concentration thereof

Abstract

The present invention provides an ammonia gas discharge system comprising: a room housing unit accommodating an engine; a duct unit connected to the engine and forming the flow path of air; and an air circulation unit spaced apart from the duct unit, installed in the room housing unit, and configured to suction or discharge air into or out of the room housing unit, wherein the duct unit divides the internal space of the room housing unit and is connected to the engine through the room housing unit. In addition, the present invention provides an ammonia concentration reduction system comprising: a room housing unit accommodating an engine; a fluid supply unit capable of injecting a fluid into the internal space of the room housing unit; a gas detection unit capable of detecting ammonia gas in the room housing unit; and a control unit for receiving information on the ammonia gas in the room housing unit from the gas detection unit to control driving of the fluid supply unit.

Description

Ammonia gas emission and concentration reduction system

[0001] The present invention relates to an ammonia gas emission and concentration reduction system.

[0002] Generally, engines installed on ships generate power by burning fossil fuels, and the exhaust gases produced during the combustion process contain nitrogen oxides, sulfur oxides, carbon dioxide, etc.

[0003] As air pollution caused by pollutants contained in conventional exhaust gases may increase, there is a demand for the development of eco-friendly ships that generate power using low-carbon or decarbonized fuels; consequently, there is a growing demand for ships fueled by ammonia, which emits no carbon dioxide during combustion, as one of the next-generation eco-friendly fuels.

[0004] However, ammonia gas is toxic and can cause harm to the human body even at low concentrations; in particular, if ammonia gas leaks in the engine room where the engine is installed, it is necessary to quickly vent or treat it to reduce its concentration.

[0005] The background technology of the present invention is disclosed in Korean Registered Patent Publication No. 10-2111503 (Registered on May 11, 2020; Title of Invention: Fuel Supply System for Eco-friendly Ships).

[0006] The present invention provides an ammonia gas exhaust system that communicates the interior and exterior of a room housing portion housing an engine and, due to a duct portion connected to the engine, can rapidly discharge ammonia gas from within the room housing portion to the outside of the room housing portion while maintaining engine operation when ammonia gas leaks from within the room housing portion.

[0007] In addition, the present invention provides an ammonia concentration reduction system and a concentration reduction method capable of reducing ammonia concentration by injecting fluid into the interior of the room housing when ammonia gas leaks within the room housing.

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

[0009] According to one embodiment of the present invention, an ammonia gas exhaust system is provided comprising: a room housing portion accommodating an engine; a duct portion connected to the engine and forming an air flow path; and an air circulation portion spaced apart from the duct portion and installed in the room housing portion, and sucking in or discharging air to the inside or outside of the room housing portion, wherein the duct portion partitions the internal space of the room housing portion and penetrates the room housing portion to be connected to the engine.

[0010] In addition, it may further include a gas detection unit disposed inside the room housing and capable of detecting ammonia gas within the room housing.

[0011] Additionally, it may further include a control unit that is electrically connected to the gas detection unit and receives information regarding ammonia gas within the room housing unit from the gas detection unit to determine whether the duct unit is in communication with the internal space of the room housing unit.

[0012] In addition, the gas detection unit is provided in multiple units, and the multiple gas detection units may be arranged at different heights within the room housing.

[0013] Additionally, the duct section may include: a duct housing having a hollow interior that communicates the interior and exterior of the room housing section; a duct fan installed in the duct housing and circulating air between the interior and exterior of the room housing section; and a communication damper capable of communicating the interior space of the duct housing and the interior space of the room housing section.

[0014] In addition, the duct section may further include a partition section capable of dividing the internal space of the duct housing into a plurality of regions and opening and closing the flow path between the plurality of regions.

[0015] In addition, the above-mentioned section may be positioned between the duct fan and the communication damper.

[0016] In addition, the air circulation unit may include a plurality of circulation fans that form air flow to and from the inside and outside of the room housing unit.

[0017] Additionally, the air circulation unit may include a first fan that flows air from the interior space of the room housing unit to the exterior space; and a second fan that flows air in the opposite direction to the first fan.

[0018] In addition, at least one of the first fan and the second fan can selectively change the direction of air flow.

[0019] According to another embodiment of the present invention, an ammonia concentration reduction system is provided, comprising: a room housing portion accommodating an engine; a fluid supply portion capable of injecting fluid into the internal space of the room housing portion; a gas detection portion capable of detecting ammonia gas within the room housing portion; and a control portion that receives information regarding ammonia gas within the room housing portion from the gas detection portion and controls the operation of the fluid supply portion.

[0020] In addition, the fluid injected from the fluid supply unit may be liquefied air.

[0021] Additionally, the fluid supply unit may include: a tank unit in which fluid is stored; a supply channel connected to the tank unit and forming a flow path for the fluid; and a spray unit connected to the supply channel and discharging the fluid to the outside.

[0022] In addition, the above tank section may be provided in multiple numbers.

[0023] In addition, the fluid supply unit may further include a supply valve disposed on the supply path and capable of opening and closing the flow path.

[0024] In addition, the gas detection unit is provided in multiple units, and the multiple gas detection units may be arranged at different heights within the room housing.

[0025] Additionally, it may further include an air circulation unit installed in the room housing and for sucking in or discharging air to and from the inside and outside of the room housing.

[0026] In addition, the air circulation unit may include a circulation fan that forms air flow to and from the inside and outside of the room housing unit.

[0027] In addition, it may further include an exhaust duct section connected to the room housing section and capable of receiving ammonia gas from the room housing section.

[0028] Additionally, the exhaust duct section may include a duct housing connected to the room housing section and having a hollow interior; and a duct fan installed in the duct housing and flowing ammonia gas into the duct housing.

[0029] In addition, the other end opposite to the one end of the duct housing connected to the room housing may be opened.

[0030] In addition, it may further include a neutralization unit connected to the exhaust duct section and neutralizing the ammonia gas received from the exhaust duct section.

[0031] According to one embodiment of the present invention, a method for reducing ammonia concentration is provided, comprising: a step in which a gas detection unit detects ammonia gas within a room housing unit; a step in which a fluid supply unit sprays fluid within the room housing unit; and a step in which ammonia gas is discharged from an internal space of the room housing unit to an external space.

[0032] Additionally, the method may further include the step of discharging ammonia gas through an exhaust duct connected to the room housing.

[0033] In addition, it may further include a step of neutralizing the ammonia gas within the exhaust duct section.

[0034] An ammonia gas exhaust system according to one embodiment of the present invention has the effect of rapidly exhausting ammonia gas from within the room housing to the outside of the room housing while maintaining engine operation when ammonia gas leaks from within the room housing, as the duct section partitions the internal space of the room housing section and is connected to the engine by penetrating the room housing section.

[0035] An ammonia concentration reduction system and ammonia concentration reduction method according to another embodiment of the present invention have the effect of rapidly diluting ammonia gas and reducing the ammonia concentration within the room housing by a fluid supply unit installed inside the room housing receiving an electrical signal from a control unit when ammonia gas leaks and injecting a fluid, specifically liquefied air, into the room housing.

[0036] In addition, the control unit receives information regarding ammonia gas, specifically information regarding ammonia gas concentration, from the gas detection unit and can reduce the concentration of ammonia by injecting a fluid (liquefied air) until the concentration of ammonia gas within the room housing unit falls below a preset range, thereby effectively preventing casualties caused by the toxicity of ammonia gas.

[0037] The effects of the present invention are not limited to those described above, and other unmentioned effects will be clearly recognized by a person skilled in the art from the description below.

[0038] FIG. 1 is a drawing illustrating a ship on which an ammonia gas emission and concentration reduction system according to embodiments of the present invention is installed.

[0039] FIG. 2 is a drawing illustrating an ammonia gas discharge system according to one embodiment of the present invention.

[0040] FIG. 3 is a block diagram illustrating a control unit according to an embodiment of the present invention.

[0041] Figure 4 is a diagram illustrating the airflow in the room housing section during normal engine operation.

[0042] Figure 5 is a diagram illustrating a state in which ammonia gas has leaked inside the room housing.

[0043] FIG. 6 is a diagram illustrating the state in which an engine is operating normally in an ammonia gas exhaust system according to another embodiment of the present invention.

[0044] Figure 7 is a drawing illustrating the state in which ammonia gas leaked inside the room housing part in Figure 6.

[0045] FIG. 8 is a diagram illustrating an ammonia concentration reduction system according to one embodiment of the present invention.

[0046] FIG. 9 is a block diagram illustrating a control unit according to an embodiment of the present invention.

[0047] Figure 10 is a drawing illustrating a state in which ammonia gas has leaked inside the room housing.

[0048] FIG. 11 is a drawing illustrating the state in which fluid is injected into the room housing portion from a fluid supply portion according to one embodiment of the present invention.

[0049] FIG. 12 is a flowchart illustrating a method for reducing ammonia concentration according to one embodiment of the present invention.

[0050] FIG. 13 is a diagram illustrating an ammonia concentration reduction system according to another embodiment of the present invention.

[0051] Figure 14 is a diagram illustrating the state in which ammonia gas inside the room housing is discharged through the exhaust duct.

[0052] FIG. 15 is a diagram illustrating an ammonia concentration reduction system according to another embodiment of the present invention.

[0053] Figure 16 is a diagram illustrating the state in which ammonia gas is neutralized by a neutralization unit.

[0054] FIG. 17 is a flowchart illustrating a method for reducing ammonia concentration according to another embodiment of the present invention.

[0055] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0056] Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0057] Terms such as “~part,” “~section,” “~part,” etc. may be used to describe various components, but said components should not be limited by said terms. These terms may refer not only to physically or visibly distinguishable components but also to descriptions of the function or configuration of a relevant part, even if the distinction or division is not clearly defined.

[0058] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0059] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0060] Terms such as "first," "second," etc., may be used to describe various components, but the order, size, location, or importance of these components is not limited by terms such as "first," "second," etc., and they are named solely for the purpose of distinguishing one component from another.

[0061] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings.

[0062]

[0063] First, an ammonia gas exhaust system according to embodiments of the present invention will be described in detail.

[0064]

[0065] FIG. 1 is a drawing illustrating a ship on which an ammonia gas exhaust system according to an embodiment of the present invention is installed. FIG. 2 is a drawing illustrating an ammonia gas exhaust system according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating a control unit according to an embodiment of the present invention. FIG. 4 is a drawing illustrating the flow of air flowing in the room housing section during normal engine operation. FIG. 5 is a drawing illustrating a state in which ammonia gas is leaked inside the room housing section.

[0066] Referring to FIGS. 1 to 3, an ammonia gas discharge system (10) according to one embodiment of the present invention is installed in a ship (1), specifically in an ammonia ship (1) that uses ammonia gas (AG) as fuel.

[0067] An ammonia gas exhaust system (10) according to one embodiment of the present invention can exhaust ammonia gas (AG) from the internal space of the room housing (100) to the external space when ammonia gas (AG) leaks inside the room housing (100), which is an engine room where an engine (ENG) is placed.

[0068] Referring to FIGS. 1 to 3, the ammonia gas exhaust system (10) may include a room housing section (100), a duct section (200), an air circulation section (300), a gas detection section (400), and a control section (500).

[0069] The room housing section (100) accommodates an engine (ENG), has a hollow interior, and can be installed on a ship (1). The room housing section (100) can accommodate the engine (ENG), as well as the air circulation section (300), gas detection section (400), and duct section (200) to be described later.

[0070] Referring to FIG. 2, the duct section (200) is connected to the engine (ENG) and forms a flow path for air (Air), and may include a duct housing (210), a duct fan (230), and a communication damper (250).

[0071] The duct section (200) forms a flow path for air and can supply external air to the engine (ENG). The flow path formed in the duct section (200) can be separated from the remaining area of ​​the internal space of the room housing section (100), excluding the area where the duct section (200) is located.

[0072] Referring to FIG. 2, the duct housing (210) is connected to the engine (ENG) and communicates with the interior and exterior of the room housing section (100), and may be hollow inside. Specifically, the duct housing (210) may be connected to the intake port of the engine (ENG). An air flow path may be formed in the internal space of the duct housing (210).

[0073] The flow path formed in the duct housing (210) is physically separated from the internal space of the room housing section (100) and can connect the engine (ENG) and the external space of the room housing section (100). A through hole (drawing symbol not set) may be formed on one side of the room housing section (100) so that the duct housing (210) can pass through.

[0074] Although not shown in the drawing, a sealing member may be installed between the inner surface of the through hole portion and the outer surface of the duct housing (210) so that gas or the like in the internal space of the room housing portion (100) cannot pass through.

[0075] Referring to FIG. 2, a duct fan (230) according to one embodiment of the present invention is installed in a duct housing (210) by receiving power from the outside, and can flow air into and out of the room housing part (100).

[0076] Referring to FIG. 2, the duct fan (230) can be placed between the inner wall of the room housing (100) and the engine (ENG).

[0077] The duct fan (230) can generate rotational force to draw air from the external space of the room housing (100) into the interior of the room housing (100), specifically into the interior of the duct housing (210). As the duct fan (230) is driven, air can flow from the external space of the room housing (100) through the duct housing (210) to the engine (ENG).

[0078] Since the duct fan (230) is a known technology, the detailed configuration and effects of the duct fan (230) will be omitted.

[0079] Referring to FIG. 2, a communication damper (250) according to one embodiment of the present invention is capable of communicating the internal space of a duct housing (210) and the internal space of a room housing part (100), and can form a flow path from the internal space of the room housing part (100) to the internal space of the duct housing (210).

[0080] The flue damper (250) can be placed inside the room housing (100) and can be located in a pre-set section along the length direction (up and down direction based on FIG. 2) of the flue damper (250).

[0081] The communication damper (250) may include an opening / closing part (251) capable of opening and closing the air flow path from the internal space of the room housing part (100) to the internal space of the duct housing (210). The opening / closing part (251) is electrically connected to a control part (500) to be described later, and can be opened / closed by receiving an electrical signal from the control part (500).

[0082] Multiple opening / closing parts (251) may be provided. Multiple opening / closing parts (251) may be spaced apart along the circumference direction with respect to the longitudinal center axis of the duct housing (210).

[0083] As an optional embodiment, the opening / closing portion (251) covers an area opened on the duct housing (210) and can slide along the longitudinal direction of the duct housing (210). That is, since the opening / closing portion (251) is capable of relative movement with respect to the duct housing (210), the internal space of the duct housing (210) and the internal space of the room housing portion (100) can be connected.

[0084] Referring to FIG. 4, in a 'normal operation state' where the engine (ENG) is operating normally, the opening / closing part (251) can be opened by receiving an electrical signal from the control part (500), and air (Air) introduced into the interior of the room housing part (100) by the air circulation part (300) described later can be introduced from the interior space of the room housing part (100) to the interior space of the duct housing (210) through the flow path opened by the opening / closing part (251).

[0085] Air introduced into the interior of the duct housing (210) can be supplied to the engine (ENG) through the intake port of the engine (ENG), can pass through the engine (ENG) and flow back into the interior space of the room housing section (100), and can be discharged into the interior of the room housing section (100) by the air circulation section (300), specifically the first fan (310).

[0086] Referring to FIG. 5, the internal space of the room housing (100) is in a ‘leakage state’ where ammonia gas (AG) is leaked. In this case, the opening / closing unit (251) may receive an electrical signal from the control unit (500) and be in a closed state.

[0087] By blocking the flow path connecting the internal space of the room housing part (100) and the internal space of the duct housing (210) through the opening / closing part (251), the internal space of the duct housing (210) and the internal space of the room housing part (100) excluding the duct housing (210) can be connected.

[0088] At this time, as the duct fan (230) is driven, fresh air (Air) outside the room housing section (100) passes through the duct fan (230) and flows into the interior of the duct housing (210), and can be supplied to the interior space of the room housing section (100) through the ammonia engine (ENG).

[0089] Referring to FIG. 5, the air circulation unit (300), specifically the first fan (310) and the second fan (350), both discharge ammonia gas (AG) from the interior space of the room housing unit (100) to the exterior space, and fresh air (Air) can be introduced into the duct housing (210) through the duct fan (230).

[0090] By blocking the flow path of a gas, such as air, between the internal space of the room housing (100) and the internal space of the duct housing (210) through the opening / closing part (251), the internal space of the duct part (200) and the room housing part (100) can be physically separated.

[0091] In addition, when ammonia gas (AG) is leaked into the room housing (100), the dual engine type engine (ENG) can be operated by burning other fuel oils such as diesel and LNG.

[0092] That is, fresh air from the outside can be introduced into the duct housing (210) through the duct housing (200), specifically the duct housing (210), while the ammonia gas (AG) is leaked into the internal space of the room housing (100). By separating the internal space of the room housing (100), where the ammonia gas (AG) is leaked, from the internal space of the duct housing (200), specifically the duct housing (210), by the opening / closing part (251), the outside air, which is fresh air (Air), can pass through the engine (ENG) and discharge the ammonia gas (AG) in the internal space of the room housing (100) to the outside.

[0093] In addition, even if ammonia gas (AG) leaks inside the room housing (100), the engine (ENG) can be operated normally by switching to fuel oil, and the toxic ammonia gas (AG) present inside the room housing (100) can be quickly discharged to the outside of the room housing (100) by flowing air through a duct (200) separated from the internal space of the room housing (100).

[0094] Referring to FIGS. 2, 4, and 5, an air circulation unit (300) according to one embodiment of the present invention is spaced apart from a duct unit (200) and installed in a room housing unit (100), and can inhale or exhale air into or out of the room housing unit (100).

[0095] The air circulation unit (300) may include a plurality of circulation fans (drawing symbols not set) that form the flow of air to and from the inside and outside of the room housing unit (100). Each of the plurality of circulation fans may be a first fan (310) and a second fan (350).

[0096] Referring to FIG. 2, the first fan (310) can receive power from the outside and flow air from the inside space of the room housing (100) to the outside space. The second fan (350) can receive power from the outside and flow air from the outside space of the room housing (100) to the inside space in the opposite direction to the first fan (310).

[0097] The first fan (310) and the second fan (350) can be electrically connected to the control unit (500) and can be driven by receiving an electrical signal from the control unit (500).

[0098] Referring to FIG. 4, the first fan (310) may be an exhaust fan that discharges air from the interior space of the room housing (100) to the exterior space, and the second fan (350) may be a supply fan that draws air from the exterior space of the room housing (100) to the interior space of the room housing (100).

[0099] According to one embodiment of the present invention, at least one of the air circulation unit (300), specifically the first fan (310) and the second fan (350), can receive an electrical signal from the control unit (500) and selectively change the direction of air flow.

[0100] Referring to FIG. 4, the second fan (350) can draw air from the external space of the room housing (100) into the internal space of the room housing (100) in order to supply air to the engine (ENG) as an intake of the engine (ENG) in a normal operating state of the engine (ENG).

[0101] Referring to FIG. 5, when ammonia gas (AG) leaks into the interior of the room housing (100), the air (Air) can be discharged from the interior space of the room housing (100) to the exterior space of the room housing (100) so as to cause the air (Air) to flow in a direction opposite to the flow direction of the air (Air) in the normal operating state.

[0102] As a result, the first fan (310) and the second fan (350) can quickly discharge the ammonia leaked into the internal space of the room housing (100) to the external space of the room housing (100).

[0103] As an optional embodiment, a plurality of first fans (310) and second fans (350) may each be provided, and a plurality of first fans (310) and a plurality of second fans (350) may be installed in the room housing portion (100).

[0104] Referring to FIGS. 2, FIGS. 4, and FIGS. 5, a gas detection unit (400) according to one embodiment of the present invention is disposed inside a room housing unit (100) and can detect ammonia gas (AG) inside the room housing unit (100).

[0105] The gas detection unit (400) can be electrically connected to the control unit (500), and when the gas detection unit (400) detects the presence of ammonia gas (AG) in the room housing unit (100), it can transmit information regarding the leakage of ammonia gas (AG) to the control unit (500) as an electrical signal.

[0106] The control unit (500) receives information regarding the leakage of ammonia gas (AG) in the room housing unit (100) from the gas detection unit (400), controls the operation of the opening / closing unit (251) provided in the duct unit (200), specifically the communication damper (250), and controls the operation of the first fan (310) and the second fan (350), which are the air circulation unit (300).

[0107] As an optional embodiment, a plurality of gas detection units (400) may be provided. The plurality of gas detection units (400) may be arranged at different heights inside the room housing unit (100).

[0108] As multiple gas detection units (400) are positioned at different locations within the internal space of the room housing unit (100), information regarding the leakage of ammonia gas (AG) within the room housing unit (100) can be obtained quickly, and the reliability of the information regarding the leakage of ammonia gas (AG) within the internal space of the room housing unit (100) can be improved.

[0109] As the gas detection unit (400) is a known technology, a detailed explanation regarding the configuration and operating principle of the gas detection unit (400) is omitted.

[0110] Referring to FIG. 3, a control unit (500) according to one embodiment of the present invention is electrically connected to a gas detection unit (400) and can receive information regarding ammonia gas (AG) in the room housing unit (100) from the gas detection unit (400).

[0111] The control unit (500) receives information regarding ammonia gas (AG) in the room housing unit (100) from the gas detection unit (400) and can determine whether the duct unit (200) and the internal space of the room housing unit (100) are connected.

[0112] Referring to FIG. 5, when the gas detection unit (400) detects ammonia gas (AG) present in the internal space of the room housing unit (100), that is, when the ammonia gas (AG) inside the room housing unit (100) is leaked, information regarding this can be transmitted to the control unit (500).

[0113] The control unit (500) is electrically connected to the air circulation unit (300), the duct unit (200), specifically the duct fan (230) and the opening / closing unit (251), and can control their operation.

[0114] The control unit (500) can change the direction of air flow by transmitting an electrical signal to the second fan (350), which sucks air from the external space to the internal space of the room housing unit (100) during normal operation of the engine (ENG), among the air circulation unit (300), specifically the first fan (310) and the second fan (350).

[0115] That is, the driving direction (rotation direction) of the second fan (350) can be changed in the reverse direction so that the second fan (350) discharges ammonia gas (AG) from the internal space of the room housing part (100) to the external space, just like the first fan (310).

[0116] In another aspect, when ammonia gas (AG) leaks from the internal space of the room housing (100), the control unit (500) can change the driving direction (rotation direction) to discharge air (Air), ammonia gas (AG), etc. from the internal space of the room housing (100) to the external space by transmitting an electrical signal to all air circulation units (300) installed in the room housing (100).

[0117] When ammonia gas (AG) is leaked inside the room housing (100), the control unit (500) can transmit an electrical signal to the duct unit (200), specifically the opening / closing unit (251), to close the opening / closing unit (251) provided in the communication damper (250).

[0118] Specifically, the opening / closing unit (251) opens and closes the flow path of air connecting the internal space of the room housing unit (100) and the internal space of the duct housing (210). When the control unit (500) closes the opening / closing unit (251), the internal space of the duct unit (200) and the room housing unit (100) are physically separated, and the ammonia gas (AG) present in the internal space of the room housing unit (100) can be blocked from entering the internal space of the duct unit (200), specifically the duct housing (210).

[0119] Referring to FIG. 5, the control unit (500) can drive the duct fan (230) by transmitting an electrical signal to the duct fan (230), and the duct fan (230) can draw fresh air (Air) from the external space of the room housing unit (100) into the internal space of the duct housing (210) and send it to the intake port of the engine (ENG).

[0120] As a result, even when ammonia gas (AG) is leaked inside the room housing (100), air (Air) can be introduced into the intake port of the engine (ENG) through the duct (200), and the air (Air) introduced into the engine (ENG) through the duct (200) is discharged into the internal space of the room housing (100), and the ammonia gas (AG) can be pushed toward the air circulation unit (300).

[0121] The air circulation unit (300) installed in the room housing unit (100), namely the first fan (310) and the second fan (350), forms a flow path of air in the same direction, thereby having the effect of rapidly discharging ammonia gas (AG) in the internal space of the room housing to the external space of the room housing unit (100).

[0122] In addition, as air is continuously introduced through the engine (ENG) intake port and the duct section (200), specifically the duct housing (210), there is an effect that allows the engine (ENG) to be operated without needing to be stopped, even if ammonia gas (AG) leaks into the internal space of the room housing section (100).

[0123] As an optional embodiment, the engine (ENG) may be a dual engine and may be driven by burning other fuel oils, such as diesel or LNG, until the ammonia gas (AG) is completely removed from the interior of the room housing (100).

[0124] Referring to FIG. 4, in a normal operating state, the duct fan (230) is operated and air is drawn from the external space of the room housing part (100) into the internal space, but is not limited thereto. In a normal operating state, the control unit (500) stops the operation of the duct fan (230) and can draw air from the external space of the room housing part (100) into the internal space only through the air circulation unit (300), specifically the second fan (350).

[0125] Air introduced into the internal space of the room housing section (100) by the second fan (350) can be introduced into the internal space of the duct housing (210) as the opening / closing section (251) provided in the duct section (200), specifically the communication damper (250), is opened, and can be supplied to the engine (ENG) through the engine (ENG) intake port in the internal space of the duct housing (210).

[0126] In an ammonia gas exhaust system (10) according to one embodiment of the present invention, a duct section (200) that is physically separated from the internal space of the room housing section (100) penetrates the room housing section (100) and is connected to an engine (ENG), specifically an engine (ENG) intake port, so that in a normal operating state, air (Air) can be introduced from the internal space of the room housing section (100) into the internal space of the duct housing (210) by passing through a communication damper (250).

[0127] In addition, when ammonia gas (AG) leaks into the internal space of the room housing (100), the opening / closing part (251) is closed to physically separate the internal space of the room housing (100) where the ammonia gas (AG) has leaked from the internal space of the duct housing (210), and air (Air) can be supplied from the external space of the room housing (100) through the duct fan (230) to the engine (ENG), so that the engine (ENG) does not need to be stopped, thereby improving the operational capability of the ship (1).

[0128] Hereinafter, the configuration, operating principle, and effects of an ammonia gas discharge system according to another embodiment of the present invention will be described.

[0129] FIG. 6 is a diagram illustrating a state in which an engine is operating normally in an ammonia gas exhaust system according to another embodiment of the present invention. FIG. 7 is a diagram illustrating a state in which ammonia gas is leaked inside the room housing portion in FIG. 6.

[0130] Referring to FIGS. 1, 6, and 7, the ammonia gas exhaust system (10') may include a room housing section (100'), a duct section (200'), an air circulation section (300'), a gas detection section (400'), and a control section.

[0131] Since the ammonia gas exhaust system (10') according to another embodiment of the present invention differs from the ammonia gas exhaust system (10) according to one embodiment of the present invention in that the duct section (200') is different, the configuration of the duct section (200') will be described in detail below.

[0132] Referring to FIG. 6, the duct section (200') is connected to the engine (ENG) and forms a flow path for air (Air), and may include a duct housing (210'), a duct fan (230'), a communication damper (250'), and a partition section (270').

[0133] The duct section (200') forms a flow path for air and can supply air from outside the room housing section (100') to the engine (ENG). The flow path formed in the duct section (200') can be separated from the remaining area of ​​the internal space of the room housing section (100'), excluding the area where the duct section (200') is located.

[0134] Referring to FIG. 6, the duct housing (210') is connected to the engine (ENG) and communicates with the interior and exterior of the room housing section (100'), and may be hollow inside. Specifically, the duct housing (210') may be connected to the intake port of the engine (ENG). An air flow path may be formed in the internal space of the duct housing (210').

[0135] The flow path formed in the duct housing (210') is physically separated from the internal space of the room housing section (100') and can connect the engine (ENG) and the external space of the room housing section (100'). A through hole (drawing symbol not set) may be formed on one side of the room housing section (100') so that the duct housing (210') can pass through.

[0136] Although not shown in the drawing, a sealing member may be installed between the inner surface of the through hole portion and the outer surface of the duct housing (210') so that gas or the like in the internal space of the room housing portion (100') cannot pass through.

[0137] The duct housing (210') is connected to the engine (ENG), specifically to the intake port of the engine (ENG). As a result, in a normal operating state where no ammonia gas (AG) leaks from the room housing section (100'), the connecting damper (250'), specifically the opening / closing section (251'), is opened, allowing air (Air) in the internal space of the room housing section (100') to pass through the connecting damper (250') and flow into the internal space of the duct housing (210'), and can be used as the intake air for the engine (ENG).

[0138] Referring to FIG. 6, the duct fan (230') is installed in the duct housing (210') by receiving power from the outside, and can circulate air to and from the inside and outside of the room housing part (100').

[0139] Referring to FIG. 6, the duct fan (230') can be placed between the inner wall of the room housing (100') and the engine (ENG).

[0140] The duct fan (230') can generate rotational force to draw air from the external space of the room housing (100') into the interior of the room housing (100'), specifically into the interior of the duct housing (210').

[0141] As the duct fan (230') is driven, air can flow from the external space of the room housing (100') through the duct housing (210') to the engine (ENG).

[0142] Referring to FIG. 6, the communication damper (250') is capable of communicating the internal space of the duct housing (210') and the internal space of the room housing part (100'), and can form a flow path of air from the internal space of the room housing part (100') to the internal space of the duct housing (210').

[0143] The flue damper (250') can be placed inside the room housing part (100') and can be located in a pre-set section along the length direction (up and down direction based on FIG. 6) of the flue damper (250').

[0144] The flue damper (250') may include an opening / closing part (251') capable of opening and closing the air flow path from the internal space of the room housing part (100') to the internal space of the duct housing (210'). The opening / closing part (251') is electrically connected to a control unit and can be opened / closed by receiving an electrical signal from the control unit.

[0145] Multiple opening / closing parts (251') may be provided. Multiple opening / closing parts (251') may be spaced apart along the circumference direction with respect to the longitudinal center axis of the duct housing (210').

[0146] As an optional embodiment, the opening / closing portion (251') covers an area opened on the duct housing (210') and can slide along the longitudinal direction of the duct housing (210').

[0147] That is, since the opening / closing part (251') is capable of relative movement with respect to the duct housing (210'), the internal space of the duct housing (210') and the internal space of the room housing part (100') can be connected.

[0148] Referring to FIG. 6, in a normal operating state where the engine (ENG) is operating normally, the opening / closing part (251') can be opened by receiving an electrical signal from the control part, and air (Air) introduced into the interior of the room housing part (100') by the air circulation part (300') can be introduced from the interior space of the room housing part (100') to the interior space of the duct housing (210') through the flow path opened by the opening / closing part (251').

[0149] As the opening / closing section (251') is opened, air (Air) introduced into the interior of the duct housing (210') from the interior space of the room housing section (100') through the communication damper (250') can be supplied to the engine (ENG) through the intake port of the engine (ENG), can flow back into the interior space of the room housing section (100') after passing through the engine (ENG), and can be discharged into the interior of the room housing section (100') by the air circulation section (300'), specifically the first fan (310').

[0150] Referring to FIG. 7, in a ‘leakage state’ where ammonia gas (AG) leaks into the internal space of the room housing part (100’), the opening / closing part (251’) can receive an electrical signal from the control part and have a closed state.

[0151] By blocking the flow path connecting the internal space of the room housing part (100') and the internal space of the duct housing (210'), the internal space of the duct housing (210') and the internal space of the room housing part (100'), excluding the duct housing (210'), can be connected.

[0152] At this time, as the duct fan (230') is driven, fresh air (Air) outside the room housing section (100') passes through the duct fan (230') and flows into the interior of the duct housing (210'), and can be supplied to the interior space of the room housing section (100') through the ammonia engine (ENG).

[0153] Referring to FIG. 7, the air circulation unit (300'), specifically the first fan (310') and the second fan (350'), both discharge ammonia gas (AG) from the interior space of the room housing unit (100') to the exterior space, and fresh air (Air) can be introduced into the duct housing (210') through the duct fan (230').

[0154] By blocking the flow path of gases, such as air, between the internal space of the room housing (100) and the internal space of the duct housing (210) through the opening / closing part (251'), the internal space of the duct part (200') and the room housing part (100') can be physically separated.

[0155] In addition, when ammonia gas (AG) is leaked into the room housing (100'), the dual-engine type engine (ENG) can be operated by burning other fuel oils such as diesel and LNG.

[0156] That is, fresh air from the outside can be introduced into the duct housing (210') through the duct housing (200'), specifically the duct housing (210'), while the ammonia gas (AG) is leaked into the internal space of the room housing (100'). By separating the internal space of the room housing (100') where the ammonia gas (AG) is leaked from the internal space of the duct housing (200'), specifically the duct housing (210'), by the opening / closing part (251'), the outside air, which is fresh air (Air), can pass through the engine (ENG) and discharge the ammonia gas (AG) in the internal space of the room housing (100') to the outside.

[0157] In addition, even if ammonia gas (AG) leaks inside the room housing (100'), the engine (ENG) can be operated normally by switching to fuel oil, and the toxic ammonia gas (AG) present inside the room housing (100') can be quickly discharged to the outside of the room housing (100') by flowing air through a duct (200') separated from the internal space of the room housing (100').

[0158] Referring to FIGS. 6 and 7, the partition (270') is installed inside the duct housing (210'), and the internal space of the duct housing (210') can be partitioned into multiple areas, and the flow path between the multiple areas can be opened and closed.

[0159] The partition section (270') can divide the internal space of the duct housing (210') into multiple areas along the longitudinal direction of the duct housing (210'). A duct fan (230') may be located on one side (upper side in Fig. 6) relative to the partition section (270'), and a communication damper (250') may be placed on the other side (lower side in Fig. 6) opposite to it.

[0160] Referring to FIG. 6, in a normal operating state where ammonia gas (AG) is not leaked within the room housing (100'), the partition (270') can be closed to block the flow of air between multiple areas of the duct housing (210') by receiving an electrical signal from the control unit.

[0161] Referring to FIG. 6, air is drawn from the external space of the room housing (100') into the internal space of the room housing (100') through the air circulation section (300') and the second fan (350'), and the drawn-in air can be introduced into the duct housing (210') through the duct section (200'), specifically the connecting damper (250').

[0162] That is, since the opening / closing part (251') provided in the communication damper (250') is in an open state, the air flow path between the internal space of the duct housing (210') and the internal space of the room housing part (100') can be opened.

[0163] Air flowing into the duct housing (210') through the exhaust damper (250') is introduced into the engine (ENG) through the intake port of the engine (ENG), and air discharged from the engine (ENG) can be discharged to the external space of the room housing section (100') through the first fan (310').

[0164] Referring to FIG. 6, as the partition (270') is closed, the control unit can stop the operation of the duct fan (230'). This prevents unnecessary power consumption associated with operating the duct fan (230').

[0165] Referring to FIG. 7, the leak state of ammonia gas (AG) leaking into the room housing (100') is illustrated, and the control unit can open the flow path of air between multiple areas within the duct housing (210') partitioned by the partition (270') by transmitting an electrical signal to the partition (270').

[0166] The control unit can drive the duct fan (230') by transmitting an electrical signal to the duct fan (230'). As the duct fan (230') is driven, air can be drawn from the external space of the room housing unit (100') into the internal space of the duct housing (210').

[0167] Air sucked into the internal space of the duct housing (210') can pass through the open compartment (270') and flow into the intake port of the engine (ENG).

[0168] Referring to FIG. 7, when ammonia gas (AG) is leaked into the internal space of the room housing (100'), the opening / closing part (251') provided in the communication damper (250') blocks the fluid flow path between the internal space of the room housing (100') and the internal space of the duct housing (210'), thereby preventing the leaked ammonia gas (AG) from entering the internal space of the duct housing (200'), specifically the duct housing (210').

[0169] The control unit can drive the first fan (310') and the second fan (350') by transmitting an electrical signal to the air circulation unit (300'), and in particular, can switch the driving direction (rotation direction) of the second fan (350') to the opposite direction.

[0170] As a result, the first fan (310') and the second fan (350') can quickly discharge the ammonia leaked into the internal space of the room housing (100') to the external space of the room housing (100').

[0171] As an optional embodiment, a plurality of first fans (310') and second fans (350') may each be provided, and a plurality of first fans (310') and a plurality of second fans (350') may be installed in the room housing part (100').

[0172] The control unit is electrically connected to the gas detection unit (400') and can receive information regarding ammonia gas (AG) in the room housing unit (100') from the gas detection unit (400').

[0173] The control unit receives information regarding ammonia gas (AG) in the room housing unit (100') from the gas detection unit (400') and can determine whether there is communication between the duct unit (200') and the internal space of the room housing unit (100').

[0174] Referring to FIG. 7, when the gas detection unit (400') detects ammonia gas (AG) present in the internal space of the room housing unit (100'), that is, when the ammonia gas (AG) inside the room housing unit (100') is leaked, information regarding this can be transmitted to the control unit.

[0175] The control unit is electrically connected to the air circulation unit (300'), the duct unit (200'), specifically the duct fan (230') and the opening / closing unit (251'), and can control their operation.

[0176] The control unit can change the direction of air flow by transmitting an electrical signal to the second fan (350') which sucks air from the external space to the internal space of the room housing unit (100') during the normal operation of the engine (ENG), specifically among the air circulation unit (300'), the first fan (310') and the second fan (350').

[0177] That is, the driving direction (rotation direction) of the second fan (350') can be changed in the reverse direction so that the second fan (350') discharges ammonia gas (AG) from the internal space of the room housing part (100') to the external space, just like the first fan (310').

[0178] In another aspect, when ammonia gas (AG) leaks from the internal space of the room housing (100'), the control unit can change the driving direction (rotation direction) by transmitting an electrical signal to all air circulation units (300') installed in the room housing (100') to discharge air (Air), ammonia gas (AG), etc. from the internal space of the room housing (100') to the external space.

[0179] When ammonia gas (AG) leaks inside the room housing (100'), the control unit transmits an electrical signal to the duct unit (200'), specifically the opening / closing unit (251'), to close the opening / closing unit (251') provided in the communication damper (250').

[0180] Specifically, the opening / closing unit (251') opens and closes the air flow path connecting the internal space of the room housing unit (100') and the internal space of the duct housing (210'). By closing the opening / closing unit (251'), the internal space of the duct unit (200') and the room housing unit (100') are physically separated, and the ammonia gas (AG) present in the internal space of the room housing unit (100') can be blocked from entering the internal space of the duct unit (200'), specifically the duct housing (210').

[0181] Referring to FIG. 7, the control unit can drive the duct fan (230') by transmitting an electrical signal to the duct fan (230'), and the duct fan (230') can draw fresh air (Air) from the external space of the room housing (100') into the internal space of the duct housing (210') and send it to the intake port of the engine (ENG).

[0182] As a result, even when ammonia gas (AG) is leaked inside the room housing (100'), air (Air) can be introduced into the intake port of the engine (ENG) through the duct (200'), and the air (Air) introduced into the engine (ENG) through the duct (200') is discharged into the internal space of the room housing (100'), and the ammonia gas (AG) can be pushed toward the air circulation section (300').

[0183] The air circulation unit (300') installed in the room housing unit (100'), specifically the first fan (310') and the second fan (350'), forms a flow path of air in the same direction, thereby enabling the rapid discharge of ammonia gas (AG) in the internal space of the room housing to the external space of the room housing unit (100').

[0184] In addition, as air is continuously introduced through the engine intake port and the duct section (200'), specifically the duct housing (210'), there is an effect that allows the engine (ENG) to be operated without needing to be stopped, even if ammonia gas (AG) leaks into the internal space of the room housing section (100').

[0185] As an optional embodiment, the engine (ENG) may be a dual engine and may be driven by burning other fuel oils, such as diesel or LNG, until the ammonia gas (AG) is completely removed from the interior of the room housing (100').

[0186] Referring to FIG. 6, when the partition (270') is closed by receiving an electrical signal from the control unit during normal operation, the duct fan (230') may stop operating. At this time, air may be introduced into the internal space of the room housing (100') through the air circulation unit (300'), specifically the second fan (350').

[0187] Air introduced into the internal space of the room housing (100') by the second fan (350') can be introduced into the internal space of the duct housing (210') as the opening / closing part (251') provided in the duct part (200'), specifically the communication damper (250'), is opened, and can be supplied to the engine (ENG) through the engine intake port in the internal space of the duct housing (210').

[0188] In an ammonia gas exhaust system (10') according to another embodiment of the present invention, a duct section (200') that is physically separated from the internal space of the room housing section (100') penetrates the room housing section (100') and is connected to an engine (ENG), specifically an engine intake port, so that in a normal operating state, air (Air) can be introduced from the internal space of the room housing section (100') into the internal space of the duct housing (210') by passing through a communication damper (250').

[0189] In addition, when ammonia gas (AG) leaks into the internal space of the room housing (100'), the opening / closing part (251') is closed to physically separate the internal space of the room housing (100') where the ammonia gas (AG) has leaked from the internal space of the duct housing (210'), and air (Air) can be supplied from the external space of the room housing (100') through the duct fan (230') to the engine (ENG), so that the engine (ENG) does not need to be stopped, thereby improving the ship's operational capability.

[0190] In addition, the internal area of ​​the duct housing (210') can be divided into multiple areas due to the partition (270') disposed inside the duct housing (210'), and the air (Air) flowing into the internal space of the room housing (100') only through the air circulation section (300') can be used as the intake of the engine (ENG).

[0191] The ammonia gas exhaust system (10') according to another embodiment of the present invention is identical to the room housing section (100'), air circulation section (300'), gas detection section (400'), and control section (500) of the gas exhaust system (10) according to one embodiment of the present invention in terms of configuration, operating principle, and effect, except that a partition section (270') is provided in the duct section (200'), so a detailed description is omitted in the scope of overlap with the room housing section (100), air circulation section (300), gas detection section (400), and control section (500) of the gas exhaust system (10) according to one embodiment of the present invention.

[0192] The following is a drawing illustrating a vessel on which an ammonia concentration reduction system according to embodiments of the present invention is installed.

[0193] FIG. 1 is a drawing illustrating a ship on which an ammonia concentration reduction system according to embodiments of the present invention is installed. FIG. 8 is a drawing illustrating an ammonia concentration reduction system according to one embodiment of the present invention. FIG. 9 is a block diagram illustrating a control unit according to one embodiment of the present invention. FIG. 10 is a drawing illustrating a state in which ammonia gas is leaked inside a room housing. FIG. 11 is a drawing illustrating a state in which fluid is injected into a room housing from a fluid supply unit according to one embodiment of the present invention.

[0194] Referring to FIGS. 1 to 11, an ammonia concentration reduction system (20) according to one embodiment of the present invention is installed in a ship (S), specifically in an ammonia ship (S) that uses ammonia gas (AG) as fuel.

[0195] The ammonia concentration reduction system (20) can reduce the ammonia concentration by injecting fluid from the fluid supply unit (2000), which will be described later, into the room housing unit (1000) when ammonia gas (AG) leaks inside the room housing unit (1000), which is an engine room where the engine is placed, and can discharge the ammonia gas (AG) from the internal space of the room housing unit (1000) to the external space.

[0196] Referring to FIGS. 8 to 11, the ammonia concentration reduction system (20) may include a room housing unit (1000), a fluid supply unit (2000), a gas detection unit (3000), an air circulation unit (4000), and a control unit (5000).

[0197] Referring to FIG. 8, a room housing portion (1000) according to one embodiment of the present invention accommodates an engine, has a hollow interior, and can be installed on a ship (S). The room housing portion (1000) may be equipped with an engine, as well as a fluid supply portion (2000), a gas detection portion (3000), an air circulation portion (4000), and a control portion (5000) to be described later.

[0198] Referring to FIG. 8, a fluid supply unit (2000) according to one embodiment of the present invention is capable of injecting fluid into the interior of a room housing unit (1000). When ammonia gas (AG) leaks into the interior space of the room housing unit (1000), the fluid is driven by receiving an electrical signal from a control unit (5000) and can inject fluid to the outside (interior space of the room housing unit (1000)).

[0199] In the present invention, the fluid injected from the fluid supply unit (2000) may be liquefied air. The fluid supply unit (2000) may inject liquefied air in the form of gas. However, it is not limited thereto, and various modifications such as nitrogen gas are possible within the technical concept of injecting into the internal space of the room housing unit (1000) where ammonia gas (AG) has leaked and reducing the concentration of ammonia gas (AG).

[0200] Below, the fluid supplied by the fluid supply unit (2000) will be explained in detail under the premise that the fluid being sprayed is liquid air.

[0201] Referring to FIG. 8, a fluid supply unit (2000) according to one embodiment of the present invention may include a tank unit (2100), a supply channel (2300), a supply valve (2500), and a spray unit (2700). The tank unit (2100) stores a fluid (liquefied air) and may be provided in multiple units.

[0202] The supply channel (2300) connects the injection unit (2700), which will be described later, and the tank unit (2100), and can provide a flow path for fluid discharged from the tank unit (2100). A supply valve (2500) may be disposed on the supply channel (2300), and the supply valve (2500) can open and close the fluid flow path formed on the supply channel (2300) by receiving an electrical signal from the control unit (5000).

[0203] Referring to FIG. 8, a plurality of supply valves (2500) may be provided to correspond to a plurality of tank sections (2100). As a result, fluid can be discharged from a plurality of tank sections (2100) onto the supply path (2300) only from some of the tank sections (2100).

[0204] Referring to FIG. 8, the injection unit (2700) is connected to the supply channel (2300), specifically, it can be connected to the other end opposite to the end of the supply channel (2300) connected to the tank unit (2100). The injection unit (2700) can discharge fluid flowing through the supply channel (2300) to the outside, that is, to the internal space of the room housing unit (1000).

[0205] In one embodiment of the present invention, the injection unit (2700) is formed as a single unit, so that the fluid discharged from a plurality of tank units (2100) can be injected to the outside through the supply channel (2300).

[0206] However, it is not limited to this, and various modifications are possible, such as providing multiple tank sections (2100) to correspond to each other and independently spraying fluid to the outside.

[0207] Referring to FIG. 11, the injection unit (2700) can spray fluid toward the bottom of the room housing unit (1000). As a result, ammonia gas (AG) can flow to the upper part of the room housing unit (1000) and can be discharged to the external space of the room housing unit (1000) by the air circulation unit (4000) to be described later, specifically by a circulation fan.

[0208] Referring to FIGS. 8 to 10, a gas detection unit (3000) according to one embodiment of the present invention is disposed inside a room housing unit (1000) and can detect ammonia gas (AG) inside the room housing unit (1000).

[0209] The gas detection unit (3000) can be electrically connected to the control unit (5000), and when the gas detection unit (3000) detects the presence of ammonia gas (AG) in the room housing unit (1000), it can transmit information regarding the ammonia gas (AG) leak to the control unit (5000) as an electrical signal.

[0210] The control unit (5000) can receive information regarding an ammonia gas (AG) leak within the room housing unit (1000) from the gas detection unit (3000) and control the operation of the fluid supply unit (2000). The fluid supply unit (2000), specifically the supply valve (2500), can receive an electrical signal from the control unit (5000) and open the supply path (2300).

[0211] The fluid can flow through the supply channel (2300) to the injection section (2700), and can be injected through the injection section (2700) into the internal space of the room housing section (1000) where ammonia gas (AG) has leaked.

[0212] As a fluid, specifically liquid air, is injected into the internal space of the room housing (1000), the ammonia gas (AG) is diluted and its concentration can be reduced, and the oxygen saturation can be increased.

[0213] As an optional embodiment, a plurality of gas detection units (3000) may be provided. The plurality of gas detection units (3000) may be arranged at different heights inside the room housing unit (1000).

[0214] As multiple gas detection units (3000) are arranged at different locations within the internal space of the room housing unit (1000), information regarding the leakage of ammonia gas (AG) within the room housing unit (1000) can be obtained quickly, and the reliability of the information regarding the leakage of ammonia gas (AG) within the internal space of the room housing unit (1000) can be improved.

[0215] As the gas detection unit (3000) is a known technology, a detailed explanation regarding the configuration and operating principle of the gas detection unit (3000) is omitted.

[0216] Referring to FIGS. 8 to 11, an air circulation unit (4000) according to one embodiment of the present invention is installed in a room housing unit (1000) and can inhale or exhale air into or out of the room housing unit (1000).

[0217] The air circulation unit (4000) may include at least one circulation fan that forms air flow between the inside and outside of the room housing unit (1000). The circulation fan can receive power from the outside and flow air from the inside space of the room housing unit (1000) to the outside space.

[0218] Referring to FIG. 11, the circulation fan is provided as an exhaust fan that discharges ammonia gas (AG) from the internal space of the room housing (1000) to the external space, but is not limited thereto, and various modifications are possible, such as being provided as a supply fan that draws air from the external space of the room housing (1000) into the internal space.

[0219] Referring to FIG. 9, the air circulation unit (4000), specifically the circulation fan, can be electrically connected to the control unit (5000) and can be driven by receiving an electrical signal from the control unit (5000).

[0220] A circulation fan according to one embodiment of the present invention can selectively change the direction of air flow by receiving an electrical signal from a control unit (5000).

[0221] Specifically, the circulation fan can form an air flow path in a first direction from the internal space of the room housing part (1000) toward the external space, and can form an air flow path in a second direction opposite to the first direction (from the external space of the room housing part (1000) toward the internal space).

[0222] Referring to FIG. 11, when ammonia gas (AG) leaks into the interior of the room housing (1000), the ammonia gas (AG) can be discharged from the interior space of the room housing (1000) to the exterior space of the room housing (1000).

[0223] As a result, the ammonia gas (AG) leaked into the internal space of the room housing (1000) can be quickly discharged to the external space of the room housing (1000).

[0224] As an optional embodiment, a plurality of circulation fans are provided, and the plurality of circulation fans may be spaced apart with a preset spacing on the room housing part (1000).

[0225] Referring to FIG. 9, a control unit (5000) according to one embodiment of the present invention is electrically connected to a gas detection unit (3000), and can control the operation of a fluid supply unit (2000) by receiving information regarding ammonia gas (AG) in the room housing unit (1000) from the gas detection unit (3000).

[0226] The control unit (5000) receives information regarding ammonia gas (AG) in the room housing unit (1000) from the gas detection unit (3000) and can open the supply valve (2500) placed on the fluid supply unit (2000), specifically the supply path (2300).

[0227] As the supply valve (2500) is opened, the fluid (liquefied air) discharged from the tank section (2100) flows along the supply path and can be delivered to the injection section (2700), and can be injected into the interior of the room housing section (1000) where ammonia gas (AG) has leaked through the injection section (2700).

[0228] The control unit (5000) is electrically connected to the supply valve (2500), gas detection unit (3000), and air circulation unit (4000), and can control their operation.

[0229] Referring to FIGS. 10 and 11, the control unit (5000) receives information regarding an ammonia gas (AG) leak in the room housing unit (1000) from the gas detection unit (3000) and can control the operation of the fluid supply unit (2000).

[0230] Specifically, the control unit (5000) opens the supply valve (2500) to allow the fluid stored in the tank unit (2100) to flow along the supply path (2300) and to be discharged into the internal space of the room housing unit (1000) through the injection unit (2700).

[0231] As a fluid, specifically liquefied air, is discharged into the internal space of the room housing (1000), the concentration of ammonia gas (AG) within the room housing (1000) can be reduced. The control unit (5000) can receive information regarding the ammonia concentration in the internal space of the room housing (1000) in real time from the gas detection unit (3000).

[0232] The control unit (5000) can stop the discharge and injection of fluid into the internal space of the room housing unit (1000) by closing the supply valve (2500) when the ammonia concentration detected by the gas detection unit (3000) is below a preset range.

[0233] The control unit (5000) can control the operation of the air circulation unit (4000) while controlling the operation of the fluid supply unit (2000) so that fluid can be discharged into the internal space of the room housing unit (1000).

[0234] Specifically, when ammonia gas leaks into the internal space of the room housing (1000), the fluid is injected into the internal space of the room housing (1000) through the fluid supply unit (2000) while the air circulation unit (4000) is driven to open the flow path of the ammonia gas (AG) from the internal space of the room housing (1000) to the external space.

[0235] That is, the air circulation unit (4000), which receives an electrical signal from the control unit (5000), specifically the circulation fan, is driven as an exhaust fan and can discharge ammonia gas (AG) from the internal space of the room housing unit (1000) to the external space.

[0236] As a result, the ammonia concentration in the internal space of the room housing (1000) can be reduced.

[0237] Referring to FIG. 11, as the injection unit (2700) sprays fluid toward the bottom of the room housing unit (1000), liquid air is sprayed in the form of fluid, specifically gas, at the bottom of the room housing unit (1000), and leaked ammonia gas (AG) can flow to the upper region of the room housing unit (1000) where the air circulation unit (4000) is located.

[0238] At this time, the air circulation unit (4000), specifically the circulation fan, is driven by receiving an electrical signal from the control unit (5000), thereby enabling the ammonia gas (AG) located in the upper area of ​​the room housing unit (1000) to be discharged to the outside through the air circulation unit (4000).

[0239] Looking at this from another perspective, as liquid air is injected in the form of gas into the internal space of the room housing (1000), the ammonia gas (AG) is diluted and the ammonia concentration can be reduced. Additionally, as the ammonia gas (AG) is discharged to the external space of the room housing (1000) through the air circulation unit (4000), there is an additional effect of reducing the ammonia concentration within the room housing (1000).

[0240] A method for reducing ammonia concentration using an ammonia concentration reduction system (20) according to one embodiment of the present invention as described above will be explained.

[0241] FIG. 12 is a flowchart illustrating a method for reducing ammonia concentration according to one embodiment of the present invention.

[0242] A method for reducing ammonia concentration according to one embodiment of the present invention may include the step of detecting ammonia gas (AG) in a room housing part (1000) (S100), the step of spraying fluid in the room housing part (1000) (S200), and the step of discharging ammonia gas (AG) from the room housing part (1000) (S300).

[0243] Referring to FIGS. 8 and FIGS. 10, in the step (S100) of detecting ammonia gas (AG) within the room housing part (1000), a gas detection part (3000) placed inside the room housing part (1000) can detect ammonia gas (AG).

[0244] As an optional embodiment, the gas detection unit (3000) can detect the concentration of ammonia gas (AG) in the room housing unit (1000).

[0245] Referring to FIG. 10, the state in which ammonia gas (AG) is leaked into the internal space of the room housing (1000) that accommodates the engine is illustrated. The gas detection unit (3000) can transmit information regarding the ammonia gas (AG) to the control unit (5000) when the concentration of the ammonia gas (AG) in the internal space of the room housing (1000) exceeds a preset range.

[0246] Referring to FIG. 10, the gas detection unit (3000) is formed as a single unit and placed in the internal space of the room housing unit (1000), but is not limited thereto and may have multiple gas detection units (3000).

[0247] As an optional embodiment, a plurality of gas detection units (3000) may be arranged at different heights inside the room housing (1000).

[0248] As multiple gas detection units (3000) are arranged at different locations within the internal space of the room housing unit (1000), information regarding the leakage of ammonia gas (AG) within the room housing unit (1000) can be obtained quickly, and the reliability of the information regarding the leakage of ammonia gas (AG) within the internal space of the room housing unit (1000) can be improved.

[0249] Referring to FIG. 11, in the step (S200) of spraying fluid into the room housing (1000), the fluid supply unit (2000) receives an electrical signal from the control unit (5000) and can spray fluid, specifically liquefied air, in the form of gas into the internal space of the room housing (1000).

[0250] The fluid supply unit (2000), specifically the injection unit (2700), can spray fluid toward the bottom surface of the room housing unit, and as a result, in addition to reducing the concentration of ammonia gas (AG) in the internal space of the room housing unit (1000), the ammonia gas (AG) can flow to the upper region of the room housing unit (1000).

[0251] Referring to FIG. 11, in the step (S300) of discharging ammonia gas (AG) from the room housing (1000), the control unit (5000) transmits an electrical signal to the air circulation unit (4000), specifically to the circulation fan, to form a flow path for air and ammonia gas (AG) from the internal space of the room housing (1000) to the external space.

[0252] As the circulation fan is driven as an exhaust fan, the ammonia gas (AG) present in the internal space of the room housing (1000) can be discharged to the external space of the room housing (1000), and the internal ammonia concentration of the room housing (1000) can be reduced.

[0253] That is, by spraying a fluid (liquefied air) into the internal space of the room housing (1000), the ammonia concentration in the room housing (1000) can be reduced primarily, and as the circulation fan is driven, the ammonia gas (AG) is discharged to the external space of the room housing (1000), and the ammonia concentration in the room housing (1000) can be reduced secondarily.

[0254] According to one embodiment of the present invention, the ammonia concentration reduction system (20) and the ammonia concentration reduction method can reduce the ammonia concentration in the room housing (1000) by rapidly diluting the ammonia gas (AG) when a fluid supply unit (2000) installed inside the room housing (1000) receives an electrical signal from the control unit (5000) when ammonia gas (AG) leaks and sprays a fluid, specifically liquefied air, into the room housing (1000).

[0255] In addition, the control unit (5000) receives information regarding ammonia gas (AG), specifically information regarding the concentration of ammonia gas (AG), from the gas detection unit (3000), and by spraying a fluid (liquefied air) until the concentration of ammonia gas (AG) in the room housing unit (1000) becomes below a preset range, the concentration of ammonia can be reduced, thereby preventing human casualties caused by the toxicity of ammonia gas (AG).

[0256]

[0257] Hereinafter, an ammonia concentration reduction system and an ammonia concentration reduction method according to another embodiment of the present invention will be described.

[0258] FIG. 13 is a diagram illustrating an ammonia concentration reduction system according to another embodiment of the present invention. FIG. 14 is a diagram illustrating a state in which ammonia gas within a room housing is discharged through an exhaust duct.

[0259] Referring to FIG. 13 and FIG. 14, an ammonia concentration reduction system (20') according to another embodiment of the present invention may include a room housing section (1000'), a fluid supply section (2000'), a gas detection section (3000'), an air circulation section (4000'), and an exhaust duct section (6000').

[0260] An ammonia concentration reduction system (20') according to another embodiment of the present invention has the same configuration as an ammonia concentration reduction system (20) according to one embodiment of the present invention, except that the exhaust duct section (6000') is connected to and communicates with the room housing section (1000'), a fluid supply section (2000'), a gas detection section (3000'), an air circulation section (4000'), and a control section. Therefore, the exhaust duct section (6000') will be described in detail below.

[0261] The exhaust duct section (6000') is connected to the room housing section (1000') and can receive ammonia gas (AG) from the room housing section (1000'). The exhaust duct section (6000') may include a duct housing (6100'), a duct fan (6300'), and an opening / closing section (6500').

[0262] Referring to FIG. 13, the duct housing (6100') is connected to one side (lower side in FIG. 13) of the room housing section (1000'), and the interior may be hollow. The duct housing (6100') can communicate with the room housing section (1000').

[0263] A flow path for air and gas is formed within the duct housing (6100'), and when ammonia gas (AG) is received from the room housing part (1000'), a flow path for ammonia gas (AG) can be formed.

[0264] Referring to FIG. 14, the other side opposite to one side of the duct housing (6100') connected to the room housing part (1000') can be opened.

[0265] As a result, ammonia gas (AG) flowing from the room housing section (1000') into the exhaust duct section (6000'), specifically into the duct housing (6100'), can flow within the duct housing (6100') and then be discharged to the outside through an opening formed in the duct housing (6100').

[0266] Referring to FIGS. 13 and 14, the duct fan (6300') is installed in the duct housing (6100') by receiving power from the outside, and can be driven to discharge ammonia gas (AG) flowing into the duct housing (6100') to the outside of the exhaust duct section (6000').

[0267] The duct fan (6300') can generate rotational force to flow ammonia gas (AG) along the flow path. As a result, ammonia gas (AG) flowing from the room housing section (1000') into the exhaust duct section (6000') can be quickly discharged to the outside.

[0268] Since the duct fan (6300') is a known technology, the detailed configuration and effects of the duct fan (6300') will be omitted.

[0269] Referring to FIGS. 13 and 14, the opening / closing unit (6500') is positioned between the duct housing (6100') and the room housing unit (1000'), and can open / close the flow path of ammonia gas (AG) from the room housing unit (1000') to the duct housing (6100').

[0270] The opening / closing unit (6500') is electrically connected to the control unit and can be opened / closed by receiving an electrical signal from the control unit. Multiple opening / closing units (6500') may be provided. Multiple opening / closing units (6500') may be spaced apart with a preset spacing on the duct housing (6100') connected to the room housing unit (1000').

[0271] In the 'normal operation state' in which ammonia gas (AG) does not leak inside the room housing part (1000') and the engine (ENG) operates normally, the opening / closing part (6500') can be kept in a closed state.

[0272] Referring to FIG. 13, the opening / closing part (6500') can remain closed while ammonia gas (AG) leaks into the internal space of the room housing part (1000') in which the engine (ENG) is housed.

[0273] That is, the control unit receives information regarding ammonia gas (AG), specifically information regarding the concentration of ammonia gas (AG), from the gas detection unit (3000'), and if the ammonia concentration exceeds a preset concentration, it can open the opening / closing unit (6500') to allow ammonia gas (AG) to enter the internal space of the duct housing (6100').

[0274] Ammonia gas (AG) introduced into the duct housing (6100') can be flowed to the open end of the duct housing (6100') by the duct fan (6300') and discharged to the outside of the duct housing (6100') through the end.

[0275] The ammonia concentration reduction system (20') according to another embodiment of the present invention reduces the ammonia concentration of the room housing section (1000') by discharging ammonia gas (AG) through an exhaust duct section (6000') that communicates with the room housing section (1000'), and the configuration and effects of the room housing section (1000'), fluid supply section (2000'), gas detection section (3000'), air circulation section (4000'), and control section are identical to those of the room housing section (1000'), fluid supply section (2000'), gas detection section (3000'), air circulation section (4000'), and control section (5000) of the ammonia concentration reduction system (20) according to one embodiment of the present invention, so a detailed description is omitted in the scope of overlap.

[0276]

[0277] Hereinafter, an ammonia concentration reduction system and an ammonia concentration reduction method according to another embodiment of the present invention will be described.

[0278] FIG. 15 is a diagram illustrating an ammonia concentration reduction system according to another embodiment of the present invention. FIG. 16 is a diagram illustrating a state in which ammonia gas is neutralized by a neutralization unit. FIG. 17 is a flowchart illustrating an ammonia concentration reduction method according to another embodiment of the present invention.

[0279] Referring to FIG. 15 and FIG. 16, an ammonia concentration reduction system (20) according to another embodiment of the present invention may include a room housing unit (1000), a fluid supply unit (2000), a gas detection unit (3000), an air circulation unit (4000), a control unit, an exhaust duct unit (6000), and a neutralization unit (7000).

[0280] Since the ammonia concentration reduction system (20'') according to another embodiment of the present invention differs from the ammonia concentration reduction system (20'') according to another embodiment of the present invention in the neutralization unit (7000''), the neutralization unit (7000'') will be described in detail below.

[0281] Referring to FIGS. 15 and 16, the neutralization unit (7000) is connected to the exhaust duct section (6000), and can neutralize the ammonia gas (AG) received from the exhaust duct section (6000).

[0282] The neutralization unit (7000) is connected to the other side opposite to one side of the exhaust duct section (6000) connected to the room housing section (1000), and may include a neutralization solution tank (7100), a gas injection unit (7300), and a transfer valve (7500).

[0283] The neutralization unit (7000) can receive and neutralize ammonia gas (AG) discharged from the exhaust duct (6000). An acid solution (AS) can be contained inside the hollow neutralization solution tank (7100).

[0284] The neutralization solution tank (7100) is connected to the discharge duct section (6000), specifically the duct housing (6100), and a transfer valve (7500) may be placed on the flow path (drawing symbol not set) connecting the discharge duct section (6000) and the duct housing (6100).

[0285] The control unit can open the transfer valve (7500) by transmitting an electrical signal to the transfer valve (7500), and thereby can transfer the ammonia gas (AG) supplied from the room housing unit (1000) to the neutralization solution tank (7100).

[0286] In the step (4000) of neutralizing the ammonia gas (AG), when the ammonia gas (AG) in the exhaust duct (6000) enters the neutralization solution tank (7100), the ammonia gas (AG) can be neutralized by coming into contact with an acidic solution through a gas injection unit (7300) placed inside the neutralization solution tank (7100).

[0287] As a result, the ammonia gas (AG) in the internal space of the room housing (1000) can be treated, and the ammonia concentration in the room housing (1000) can be reduced.

[0288] Although it has been described by example that the neutralization solution tank (7100``) can contain an acid solution (AS), it is not limited thereto. For example, water can be contained in the neutralization solution tank (7100``). Ammonia gas (AG) can be neutralized by spraying water to neutralize ammonia. The ammonia concentration reduction system (20``) according to another embodiment of the present invention has the same configuration, operating principle, and effect as the room housing unit (1000`), fluid supply unit (2000`), gas detection unit (3000`), air circulation unit (4000`), control unit, and exhaust duct unit (6000`) according to another embodiment of the present invention, except for the neutralization unit (7000``), so a detailed description is omitted in the scope of overlap.

[0289] In addition, the method for reducing ammonia concentration according to another embodiment of the present invention includes a step (S400') of neutralizing ammonia gas (AG) within an exhaust duct (6000''), and the steps of detecting ammonia gas within a room housing (S100'), spraying fluid within a room housing (S200'), and discharging ammonia gas from a room housing (S300') are identical to the method for reducing ammonia concentration according to one embodiment of the present invention, so a detailed description is omitted in the scope of overlap therewith.

[0290] An ammonia concentration reduction system (20'') according to another embodiment of the present invention has the effect of diluting and removing the ammonia concentration in the room housing section (1000'') by neutralizing the ammonia gas (AG) contained in the exhaust duct section (6000'') through a neutralization unit (7000'') by neutralizing the ammonia gas (AG).

[0291] Although the invention has been described with reference to the above embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as described in the following claims.

[0292] According to the present invention, an ammonia gas emission and concentration reduction system is provided. Furthermore, embodiments of the present invention can be applied to industrially used vessels that use ammonia as fuel, etc.

Claims

1. Room housing section accommodating the engine; A duct section connected to the above-mentioned engine and forming an air flow path; and It includes an air circulation unit spaced apart from the duct section and installed in the room housing section, which sucks in or discharges air to and from the inside and outside of the room housing section. An ammonia gas exhaust system in which the above duct section partitions the internal space of the above room housing section and penetrates the above room housing section to be connected to the engine.

2. In Paragraph 1, An ammonia gas exhaust system further comprising: a gas detection unit disposed inside the room housing portion and capable of detecting ammonia gas within the room housing portion.

3. In Paragraph 2, An ammonia gas exhaust system further comprising: a control unit electrically connected to the gas detection unit, receiving information regarding ammonia gas within the room housing unit from the gas detection unit, and determining whether the duct unit is in communication with the internal space of the room housing unit.

4. In Paragraph 2, The above gas detection unit is provided in multiple numbers, and An ammonia gas exhaust system in which a plurality of the above-mentioned gas detection units are arranged at different heights within the room housing.

5. In Paragraph 1, The above duct section is, A duct housing having a hollow interior that connects the interior and exterior of the room housing section; A duct fan installed in the above duct housing and circulating air into and out of the room housing portion; and An ammonia gas exhaust system comprising: a communication damper capable of communicating the internal space of the duct housing and the internal space of the room housing portion.

6. In Paragraph 5, An ammonia gas exhaust system comprising: a duct section capable of dividing the internal space of the duct housing into a plurality of regions, and a partition section capable of opening and closing the flow path between the plurality of regions.

7. In Paragraph 6, The above-mentioned compartment is an ammonia gas exhaust system disposed between the duct fan and the flue damper.

8. In Paragraph 1, The above air circulation unit is, An ammonia gas exhaust system comprising a plurality of circulation fans that form air flow to and from the inside and outside of the room housing portion.

9. In Paragraph 1, The above air circulation unit is, A first fan that flows air from the interior space of the room housing to the exterior space; and An ammonia gas exhaust system comprising: a second fan that flows air in the opposite direction to the first fan.

10. In Paragraph 9, An ammonia gas exhaust system in which at least one of the first fan and the second fan is capable of selectively changing the direction of air flow.

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