Ammonia treatment device and ammonia fuel ship

Abstract

The invention belongs to the technical field of ammonia fuel ships, and discloses an ammonia treatment device and an ammonia fuel ship, in the ammonia treatment device, when the concentration of ammonia water in a first-stage washing cabinet is large, the ammonia water in the first-stage washing cabinet can be conveyed to an ammonia water collecting cabin, and the ammonia water collecting cabin is used for temporarily collecting and storing the ammonia water; the heating device is used for heating the ammonia water in the ammonia water collecting cabin, so that part of the ammonia water in the ammonia water collecting cabin can be converted into water and ammonia gas again, and the ammonia gas can enter the secondary washing cabinet, so that the concentration of the ammonia water in the ammonia water collecting cabin is reduced; the ammonia water lightering device can be used for conveying the ammonia water with reduced concentration in the ammonia water collecting cabin back to the primary washing cabinet, so that more ammonia gas can be dissolved in the primary washing cabinet, and meanwhile, the amount of the ammonia water in the ammonia water collecting cabin is reduced; the amount of ammonia water in the ammonia water collecting cabin can be reduced through the ammonia treatment device.

Description

Technical Field

[0001] This invention relates to the field of ammonia-fueled ship technology, and more particularly to ammonia treatment equipment and ammonia-fueled ships. Background Technology

[0002] Ammonia, as a novel low-flash-point fuel, is considered one of the cleanest fuels due to its carbon-free composition and lack of carbon oxides in its combustion exhaust, and thus possesses broad development potential. However, because ammonia is highly toxic, its emissions are subject to strict restrictions, with very low permissible emissions. All emissions that may contain ammonia must undergo rigorous treatment to ensure that the ammonia concentration is below the specified limits.

[0003] Ammonia treatment devices in related technologies, such as Figure 1 As shown, it employs a water washing + acid washing + ammonia storage method. During the use of ammonia fuel, a large amount of ammonia gas is generated in a short period of time (e.g., during purging). The ammonia gas is introduced into the water washing tank 1' for washing. Most of the ammonia gas is dissolved in water to form ammonia water. A small portion of the ammonia gas that is not absorbed by water enters the acid washing tank 2' for washing. After washing, the gas that meets the emission requirements is released into the atmosphere. When the solution in the water washing tank 1' reaches a certain concentration (e.g., 20%), due to the high concentration, it is difficult to dissolve more ammonia gas. The ammonia water needs to be discharged into the ammonia water collection tank 3', and fresh water needs to be added to the water washing tank 1' for continued use. The problem is that the ammonia water collection tank 3' can only temporarily store ammonia water. The ammonia water cannot be directly discharged into the sea and needs to be discharged at a terminal capable of receiving ammonia water. However, due to the incomplete supporting equipment for ammonia fuel at many terminals, there is a problem that the ammonia water in the ammonia water collection tank 3' cannot be discharged when docked, resulting in the accumulation of ammonia water in the ammonia water collection tank 3'. When the tank is full, the ammonia fuel can no longer be used. Summary of the Invention

[0004] According to one aspect of the present invention, an ammonia treatment apparatus is provided to solve the problem in the related art that ammonia-fueled ships may be unable to discharge ammonia water from the ammonia water collection tank when berthing, resulting in the accumulation of ammonia water in the ammonia water collection tank and the inability to continue using ammonia fuel after the tank is full.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Ammonia treatment equipment, including:

[0007] A primary washing cabinet is used to hold water. Ammonia gas from the ammonia fuel system can enter the primary washing cabinet and dissolve in the water held inside to form ammonia water.

[0008] A secondary washing cabinet is used to hold acid solution. Ammonia gas in the primary washing cabinet can enter the secondary washing cabinet and react with the acid solution held in the secondary washing cabinet to generate ammonium salt.

[0009] Ammonia water collection chamber, wherein ammonia water in the primary washing cabinet can enter the ammonia water collection chamber, and ammonia gas in the ammonia water collection chamber can enter the secondary washing cabinet;

[0010] A heating device is used to heat the ammonia water in the ammonia water collection chamber;

[0011] The ammonia water transfer device includes an ammonia water transfer pipeline connected to the ammonia water collection chamber and the primary washing cabinet, and an ammonia water transfer pump installed in the ammonia water transfer pipeline. The ammonia water transfer pump is used to transport ammonia water in the ammonia water collection chamber to the primary washing cabinet.

[0012] As a preferred embodiment of the ammonia treatment device, the primary washing cabinet has a first inlet end, a first outlet end and a second outlet end. The first inlet end is used to connect to the ammonia fuel system, and the ammonia gas of the ammonia fuel system can enter the primary washing cabinet through the first inlet end.

[0013] The secondary washing cabinet has a second inlet end, a third inlet end and a third outlet end. The second inlet end is connected to the first outlet end. Ammonia gas in the primary washing cabinet can enter the secondary washing cabinet through the first outlet end and the second inlet end. The third outlet end is used for gas discharge.

[0014] The ammonia collection chamber has a fourth inlet and a fourth outlet. The fourth inlet is connected to the second outlet. Ammonia in the primary washing cabinet can enter the ammonia collection chamber through the second outlet and the fourth inlet. The fourth outlet is connected to the third inlet. Ammonia in the ammonia collection chamber can enter the secondary washing cabinet through the fourth outlet and the third inlet.

[0015] As a preferred embodiment of the ammonia treatment device, it also includes a safety venting pipeline connected between the ammonia water collection chamber and the secondary washing cabinet, through which ammonia gas in the ammonia water collection chamber can enter the secondary washing cabinet.

[0016] As a preferred embodiment of the ammonia treatment device, it further includes an ammonia water transfer pump, which is disposed between the second outlet end and the fourth inlet end and is used to transfer ammonia water from the second outlet end to the fourth inlet end.

[0017] As a preferred embodiment of the ammonia treatment device, the heating device includes a heating pipe installed in the ammonia water collection chamber. The heating pipe is used to heat the medium entering the chamber, and a heating device control valve is provided at both ends of the heating pipe.

[0018] As a preferred embodiment of the ammonia treatment device, there are two secondary washing cabinets. The ammonia gas in the primary washing cabinet can enter one of the two secondary washing cabinets, and the ammonia gas in the ammonia water collection chamber can enter one of the two secondary washing cabinets.

[0019] As a preferred embodiment of the ammonia treatment device, the ammonia water transfer device further includes a cooler installed in the ammonia water transfer pipeline, the cooler being used to cool the ammonia water in the ammonia water transfer pipeline.

[0020] As a preferred embodiment of the ammonia treatment device, the cooler is connected to the output end of the ammonia water transport pump, and the output end of the ammonia water transport pump is also connected to the shore discharge pipeline, which is used to connect to the ammonia water treatment equipment on shore.

[0021] As a preferred embodiment of the ammonia treatment device, the bottom of the secondary washing cabinet is also provided with an ammonia salt discharge end for discharging ammonia salts.

[0022] According to another aspect of the invention, an ammonia-fueled ship is provided, comprising the aforementioned ammonia treatment device, and further comprising an ammonia fueling system, wherein ammonia gas from the ammonia fueling system can enter the primary scrubbing tank.

[0023] The beneficial effects of this invention are:

[0024] This invention provides an ammonia treatment device, including a primary scrubbing tank, a secondary scrubbing tank, an ammonia water collection chamber, a heating device, and an ammonia water transfer device. The primary scrubbing tank is used to hold water. Ammonia gas from the ammonia fuel system can enter the primary scrubbing tank and dissolve in the water to form ammonia water, thus dissolving most of the ammonia gas in the water. The secondary scrubbing tank is used to hold acid. Ammonia gas from the primary scrubbing tank can enter the secondary scrubbing tank and react with the acid to form ammonium salts. The secondary scrubbing tank can further treat the ammonia gas that has not dissolved in the water of the primary scrubbing tank to remove ammonia gas and make the gas meet emission standards. The ammonia water in the primary scrubbing tank can enter the ammonia water collection chamber, and the ammonia gas in the ammonia water collection chamber can enter the secondary scrubbing tank. When the ammonia water concentration in the primary scrubbing tank is high, the ammonia water in the primary scrubbing tank can be transferred to the ammonia water collection chamber for temporary collection and storage. The heating device is used to heat the ammonia water in the ammonia water collection chamber. Afterwards, a large amount of ammonia gas can be released. By setting up a heating device, some of the ammonia water in the ammonia water collection tank can be converted back into water and ammonia gas. The ammonia gas can enter the secondary scrubbing tank and react with the acid liquid contained in the secondary scrubbing tank to generate ammonium salts. Compared with ammonia water, ammonium salts are smaller in volume and easier to store, thus reducing the ammonia water concentration in the ammonia water collection tank. The ammonia water transfer device includes an ammonia water transfer pipeline connecting the ammonia water collection tank and the primary scrubbing tank, and an ammonia water transfer pump installed in the ammonia water transfer pipeline. The ammonia water transfer pump is used to transport the ammonia water in the ammonia water collection tank to the primary scrubbing tank. Thus, the ammonia water in the ammonia water collection tank, whose concentration has been reduced, can be transported back to the primary scrubbing tank through the ammonia water transfer device, so that more ammonia gas can be dissolved in the primary scrubbing tank, while reducing the amount of ammonia water in the ammonia water collection tank. When ammonia-fueled ships cannot temporarily discharge the ammonia water in the ammonia water collection tank, the ammonia water in the ammonia water collection tank can be reduced through this ammonia treatment device to avoid the situation where the tank is full and the ship cannot continue to use ammonia fuel.

[0025] This invention also provides an ammonia-fueled ship, including the aforementioned ammonia treatment device and an ammonia fuel system. Ammonia gas from the ammonia fuel system can enter a primary scrubbing tank. In this ammonia treatment device, when the ammonia concentration in the primary scrubbing tank is high, the ammonia water in the primary scrubbing tank can be transported to an ammonia water collection tank for temporary collection and storage. A heating device is used to heat the ammonia water in the ammonia water collection tank. Since ammonia gas can be released in large quantities after the ammonia water is heated, by setting up the heating device, some of the ammonia water in the ammonia water collection tank can be converted back into water and ammonia gas. The ammonia gas can then enter a secondary scrubbing tank and react with the acid solution contained in the secondary scrubbing tank to generate ammonium salts. Compared to ammonia water, ammonium salts are smaller in volume and more... It is easy to store, thereby reducing the ammonia concentration in the ammonia collection tank; the ammonia transfer device includes an ammonia transfer pipeline connected to the ammonia collection tank and the primary scrubbing tank, and an ammonia transfer pump installed in the ammonia transfer pipeline. The ammonia transfer pump is used to transport the ammonia in the ammonia collection tank to the primary scrubbing tank, so that the ammonia in the ammonia collection tank, whose concentration has been reduced, can be transported back to the primary scrubbing tank through the ammonia transfer device, so that more ammonia can be dissolved in the primary scrubbing tank, while reducing the amount of ammonia in the ammonia collection tank. When ammonia-fueled ships cannot temporarily discharge the ammonia in the ammonia collection tank, the ammonia treatment device can be used to reduce the amount of ammonia in the ammonia collection tank, avoiding the situation where the tank is full and the ship cannot continue to use ammonia fuel. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an ammonia treatment device in related technologies;

[0027] Figure 2 This is a first structural schematic diagram of the ammonia treatment device in an embodiment of the present invention;

[0028] Figure 3 This is a second structural schematic diagram of the ammonia treatment device in an embodiment of the present invention.

[0029] In the picture:

[0030] 1' Water washing cabinet; 2' Acid washing cabinet; 3' Ammonia water collection chamber;

[0031] 1. Primary washing cabinet; 11. First inlet end; 12. First outlet end; 13. Second outlet end; 14. Fresh water inlet end;

[0032] 2. Secondary washing cabinet; 21. Second inlet end; 22. Third inlet end; 23. Third outlet end; 24. Acid injection end; 25. Ammonium salt discharge end;

[0033] 3. Ammonia water collection chamber; 31. Fourth inlet end; 32. Fourth outlet end; 33. Ammonia inlet end;

[0034] 4. Heating device; 41. Heating element; 42. Heating device control valve;

[0035] 5. Safety relief pipeline; 51. Safety relief pipeline control valve;

[0036] 6. Ammonia water transfer pump; 61. First control valve; 62. Second control valve; 63. Third control valve; 64. Fourth control valve; 65. Fifth control valve; 66. Sixth control valve; 67. Ammonia salt discharge end control valve; 68. Three-way valve;

[0037] 7. Ammonia water transfer device; 71. Ammonia water transfer pipeline; 72. Ammonia water transfer pump; 73. Cooler;

[0038] 8. Drainage pipeline. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0040] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0043] In related technologies, ammonia treatment devices employ a water washing + acid washing + ammonia water storage method. During ammonia fuel use, a significant amount of ammonia gas is generated in a short period (e.g., during purging). This ammonia gas is introduced into a water washing tank for washing. Most of the ammonia gas dissolves in water, forming ammonia water. A small portion of the ammonia gas that is not absorbed by water enters an acid washing tank for further washing. After washing, the gas that meets emission requirements is released into the atmosphere. When the solution in the water washing tank reaches a certain concentration (e.g., 20%), due to the high concentration, it is difficult to dissolve more ammonia gas. The ammonia water must then be discharged into an ammonia water collection tank, and fresh water must be added to the water washing tank for continued use. The problem is that the ammonia water collection tank can only temporarily store ammonia water. The ammonia water cannot be directly discharged into the sea and must be discharged at a terminal capable of receiving ammonia water. However, because the supporting equipment for ammonia fuel at many terminals is not yet perfect, there is a problem that the ammonia water cannot be discharged from the ammonia water collection tank when docked, causing the ammonia water to accumulate in the ammonia water collection tank. Once the tank is full, the ammonia fuel cannot be used anymore.

[0044] In response, this embodiment provides an ammonia treatment device to solve the problem in related technologies where ammonia-fueled ships may be unable to discharge ammonia water from the ammonia water collection tank when berthing, resulting in the accumulation of ammonia water in the ammonia water collection tank and the inability to continue using ammonia fuel after the tank is full. This device can be used in the field of ammonia-fueled ship technology.

[0045] Reference Figure 2The ammonia treatment unit includes a primary scrubbing tank 1, a secondary scrubbing tank 2, an ammonia water collection chamber 3, a heating device 4, and an ammonia water transfer device 7. The primary scrubbing tank 1 holds water; ammonia gas from the ammonia fuel system can enter the primary scrubbing tank 1 and dissolve in the water therein to form ammonia water, thus dissolving most of the ammonia gas in water. The secondary scrubbing tank 2 holds acid; ammonia gas from the primary scrubbing tank 1 can enter the secondary scrubbing tank 2 and react with the acid therein to form ammonium salts. The ammonia gas that did not dissolve in the primary scrubbing tank can be removed through the secondary scrubbing tank 2. The ammonia in the water undergoes secondary treatment to remove ammonia and ensure the gas meets emission standards. The ammonia in the primary scrubbing tank 1 can enter the ammonia collection chamber 3, and the ammonia in the collection chamber 3 can enter the secondary scrubbing tank 2. When the ammonia concentration in the primary scrubbing tank 1 is high, the ammonia in the primary scrubbing tank 1 can be transferred to the ammonia collection chamber 3 for temporary collection and storage. A heating device 4 is used to heat the ammonia in the ammonia collection chamber 3. Because ammonia gas can be released in large quantities after heating, the heating device 4 ensures that the ammonia in the collection chamber 3 is heated. Part of the ammonia water in chamber 3 can be converted back into water and ammonia gas. The ammonia gas can enter the secondary scrubbing tank 2 and react with the acid solution contained in the secondary scrubbing tank 2 to generate ammonium salts. Compared with ammonia water, ammonium salts are smaller in volume and easier to store, thus reducing the ammonia concentration in the ammonia water collection chamber 3. The ammonia water transfer device 7 includes an ammonia water transfer pipeline 71 connected to the ammonia water collection chamber 3 and the primary scrubbing tank 1, and an ammonia water transfer pump 72 installed in the ammonia water transfer pipeline 71. The ammonia water transfer pump 72 is used to transport the ammonia water in the ammonia water collection chamber 3 to the primary scrubbing tank 1, thereby allowing the ammonia water to pass through the primary scrubbing tank 1. The barge transport device 7 transports the ammonia water in the ammonia water collection tank 3, whose concentration has been reduced, back to the primary scrubbing tank 1, so that more ammonia gas can be dissolved in the primary scrubbing tank 1. At the same time, it reduces the amount of ammonia water in the ammonia water collection tank 3. When ammonia-fueled ships are temporarily unable to discharge the ammonia water in the ammonia water collection tank 3, the amount of ammonia water in the ammonia water collection tank 3 can be reduced through this ammonia treatment device, so as to avoid the situation where the tank is full and the ship cannot continue to use ammonia fuel. This allows ammonia-fueled ships to continue to use ammonia fuel for operation without increasing the capacity of the ammonia water collection tank 3 when no ammonia water discharge terminal can be found.

[0046] Optionally, one end of the ammonia water transfer pipeline 71 located inside the ammonia water collection tank 3 extends below the liquid surface to facilitate the discharge of ammonia gas.

[0047] Continue to refer to Figure 2The primary washing tank 1 has a first inlet end 11, a first outlet end 12, and a second outlet end 13. The first inlet end 11 is used to connect to an ammonia fuel system, through which ammonia gas from the ammonia fuel system can enter the primary washing tank 1. Optionally, the first inlet end 11 extends below the liquid surface to allow the ammonia gas to fully dissolve in the water, the first outlet end 12 is located above the liquid surface to facilitate the discharge of ammonia gas, and the second outlet end 13 is located below the liquid surface to facilitate the discharge of ammonia water.

[0048] Continue to refer to Figure 2 The secondary washing cabinet 2 has a second inlet end 21, a third inlet end 22, and a third outlet end 23. The second inlet end 21 is connected to the first outlet end 12. Ammonia gas in the primary washing cabinet 1 can enter the secondary washing cabinet 2 through the first outlet end 12 and the second inlet end 21. The third outlet end 23 is used for gas discharge. Optionally, the second inlet end 21 extends below the liquid surface to allow the ammonia gas to react fully with the acid liquid. Similarly, the third inlet end 22 extends below the liquid surface to allow the ammonia gas to react fully with the acid liquid. The third outlet end 23 is located above the liquid surface to facilitate gas discharge.

[0049] Continue to refer to Figure 2 The ammonia collection chamber 3 has a fourth inlet end 31 and a fourth outlet end 32. The fourth inlet end 31 is connected to the second outlet end 13. Ammonia in the primary washing tank 1 can enter the ammonia collection chamber 3 through the second outlet end 13 and the fourth inlet end 31. The fourth outlet end 32 is connected to the third inlet end 22. Ammonia in the ammonia collection chamber 3 can enter the secondary washing tank 2 through the fourth outlet end 32 and the third inlet end 22. Optionally, the fourth outlet end 32 is located above the liquid surface to facilitate the discharge of ammonia. Optionally, a first control valve 61 is provided between the fourth outlet end 32 and the third inlet end 22. The first control valve 61 is used to connect or disconnect the fourth outlet end 32 and the third inlet end 22, thereby controlling the flow of ammonia in the ammonia collection chamber 3 by opening and closing the first control valve 61.

[0050] Optionally, the primary washing tank 1 is also provided with a fresh water injection end 14 for adding fresh water, the secondary washing tank 2 is also provided with an acid injection end 24 for adding acid, and the ammonia water collection tank 3 is also provided with an ammonia gas inlet end 33 for connecting to the ammonia fuel system. The ammonia gas from the ammonia fuel system can also enter the ammonia water collection tank 3 through the ammonia gas inlet end 33.

[0051] Optionally, the bottom of the secondary washing cabinet 2 is also provided with an ammonia discharge end 25 for discharging ammonia salts, thereby discharging the ammonia salts accumulated at the bottom of the secondary washing cabinet 2 and adding acid into the secondary washing cabinet 2 through the acid injection end 24 to increase the amount of ammonia gas that the secondary washing cabinet 2 can handle. The ammonia salt discharge end 25 is also connected to an ammonia salt discharge end control valve 67, which is used to connect or disconnect the ammonia salt discharge end 25 from external equipment.

[0052] Continue to refer to Figure 2 The ammonia treatment device also includes a safety relief pipeline 5 connecting the ammonia collection chamber 3 and the secondary scrubbing tank 2. Ammonia gas in the ammonia collection chamber 3 can enter the secondary scrubbing tank 2 through the safety relief pipeline 5, thereby transporting excess ammonia gas in the ammonia collection chamber 3 to the secondary scrubbing tank 2. Optionally, the safety relief pipeline 5 is also equipped with a safety relief pipeline control valve 51, which is used to control the opening and closing of the safety relief pipeline 5 to control the flow of ammonia gas in the ammonia collection chamber 3.

[0053] Continue to refer to Figure 2 The ammonia treatment device also includes an ammonia water transfer pump 6, which is located between the second outlet end 13 and the fourth inlet end 31. The pump is used to transfer ammonia water from the second outlet end 13 to the fourth inlet end 31. Whether to activate the ammonia water transfer pump 6 to transfer ammonia water can be determined based on the ammonia concentration inside the primary washing cabinet 1. Optionally, a second control valve 62 is also provided between the input end of the ammonia water transfer pump 6 and the second outlet end 13. The second control valve 62 is used to connect or disconnect the input end of the ammonia water transfer pump 6 from the second outlet end 13.

[0054] Continue to refer to Figure 2 The heating device 4 includes a heating pipe 41 disposed within the ammonia collection tank 3. The heating pipe 41 is located below the liquid level in the ammonia collection tank 3 to facilitate heating of the ammonia. The heating pipe 41 allows the entry of a heating medium, which can exchange heat with the ammonia within the heating pipe 41 to heat the ammonia. Optionally, the heating pipe 41 can be connected to a ship's steam system, and the heating medium is saturated steam. Optionally, both ends of the heating pipe 41 are equipped with heating device control valves 42, which can control the connection status between the two ends of the heating pipe 41 and external equipment.

[0055] Continue to refer to Figure 2The ammonia water transfer device 7 also includes a cooler 73 installed in the ammonia water transfer pipeline 71. The cooler 73 is used to cool the ammonia water in the ammonia water transfer pipeline 71, thereby increasing the amount of ammonia gas that can be dissolved in the ammonia water in the ammonia water transfer pipeline 71, so that more ammonia gas can be dissolved in the primary washing tank 1, thus improving the ammonia gas treatment effect. Optionally, a third control valve 63 is also provided between the ammonia water collection chamber 3 and the input end of the ammonia water transfer pump 72. The third control valve 63 is used to connect or disconnect the ammonia water collection chamber 3 from the input end of the ammonia water transfer pump 72. A fourth control valve 64 is also provided between the input end of the cooler 73 and the output end of the ammonia water transfer pump 72. The fourth control valve 64 is used to connect or disconnect the input end of the cooler 73 from the output end of the ammonia water transfer pump 72. A fifth control valve 65 is also provided between the output end of the cooler 73 and the primary washing tank 1. The fifth control valve 65 is used to connect or disconnect the output end of the cooler 73 from the primary washing tank 1.

[0056] Continue to refer to Figure 2 The cooler 73 is connected to the output end of the ammonia water transport pump 72, which is also connected to the shore discharge pipeline 8. The shore discharge pipeline 8 is used to connect to the onshore ammonia water treatment equipment, thus making the ammonia water transport pipeline 71 a pipeline for transporting ammonia water to both the primary washing tank 1 and the onshore ammonia water treatment equipment. Optionally, the shore discharge pipeline 8 is also equipped with a sixth control valve 66, which is used to control the opening and closing of the shore discharge pipeline 8. The connection point between the shore discharge pipeline 8 and the ammonia water transport pipeline 71 is located between the output end of the ammonia water transport pump 72 and the fourth control valve 64. When the ammonia-fueled vessel docks and discharges ammonia water, the sixth control valve 66 is open, and the fourth control valve 64 and the fifth control valve 65 are both closed; when the ammonia-fueled vessel is not discharging ammonia water, the sixth control valve 66 is closed, and the fourth control valve 64 and the fifth control valve 65 are both open.

[0057] Reference Figure 3 There are two secondary washing cabinets 2. The ammonia gas in the primary washing cabinet 1 can enter one of the two secondary washing cabinets 2, and the ammonia gas in the ammonia water collection chamber 3 can also enter one of the two secondary washing cabinets 2. By setting two secondary washing cabinets 2, the amount of ammonia gas that the ammonia treatment device can handle can be increased. Depending on the actual use of the two secondary washing cabinets 2, one of the secondary washing cabinets 2 can be used as a working cabinet and the other as an idle cabinet. The ammonia gas in the primary washing cabinet 1 and the ammonia gas in the ammonia water collection chamber 3 are only transported to the working cabinet.

[0058] Optionally, the ammonia treatment device further includes a three-way valve 68, the three connection ends of which are respectively connected to the first outlet end 12, the second inlet end 21 of one of the secondary washing cabinets 2 and the second inlet end 21 of the other secondary washing cabinet 2, and can connect the first outlet end 12 to the second inlet end 21 of one of the secondary washing cabinets 2, or connect the first outlet end 12 to the second inlet end 21 of the other secondary washing cabinet 2.

[0059] Optionally, a first control valve 61 is provided between the fourth outlet 32 ​​and the third inlet 22 of each of the two secondary washing cabinets 2. The two first control valves 61 can control the flow between the fourth outlet 32 ​​and the corresponding third inlet 22 of the secondary washing cabinet 2. With this configuration, the flow path between the fourth outlet 32 ​​and the third inlet 22 of the two secondary washing cabinets 2 can be controlled by the two first control valves 61. Specifically, depending on the actual situation, both first control valves 61 can be opened simultaneously, allowing the ammonia in the ammonia collection chamber 3 to flow to both secondary washing cabinets 2 simultaneously; or only one first control valve 61 can be opened, allowing the ammonia in the ammonia collection chamber 3 to flow to only one secondary washing cabinet 2; or both first control valves 61 can be closed simultaneously, preventing the ammonia in the ammonia collection chamber 3 from flowing to the secondary washing cabinet 2.

[0060] Optionally, both secondary washing cabinets 2 are provided with an ammonia discharge end 25 at the bottom, and both ammonia discharge ends 25 are connected to an ammonia discharge end control valve 67. The ammonia discharge end control valve 67 is used to connect or disconnect the corresponding ammonia discharge end 25 from external equipment.

[0061] This embodiment also provides an ammonia-fueled vessel, which includes the aforementioned ammonia treatment device and an ammonia fuel system. Ammonia gas from the ammonia fuel system can enter a primary scrubbing tank 1. In this ammonia treatment device, when the ammonia concentration in the primary scrubbing tank 1 is high, the ammonia water in the primary scrubbing tank 1 can be transported to an ammonia water collection tank 3 for temporary collection and storage. A heating device 4 is used to heat the ammonia water in the ammonia water collection tank 3. Since ammonia gas can be released in large quantities after the ammonia water is heated, by setting up the heating device 4, some of the ammonia water in the ammonia water collection tank 3 can be converted back into water and ammonia gas. The ammonia gas can then enter a secondary scrubbing tank 2 and react with the acid solution contained in the secondary scrubbing tank 2 to generate ammonium salts. Compared to ammonia water, ammonium salts are smaller in volume and easier to react. The ammonia collection tank 3 is stored to reduce the concentration of ammonia in the ammonia water. The ammonia water transfer device 7 includes an ammonia water transfer pipeline 71 connected to the ammonia water collection tank 3 and the primary scrubbing tank 1, and an ammonia water transfer pump 72 installed in the ammonia water transfer pipeline 71. The ammonia water transfer pump 72 is used to transport the ammonia water in the ammonia water collection tank 3 to the primary scrubbing tank 1. Thus, the ammonia water in the ammonia water collection tank 3, whose concentration has been reduced, can be transported back to the primary scrubbing tank 1 through the ammonia water transfer device 7, so that more ammonia gas can be dissolved in the primary scrubbing tank 1, and the amount of ammonia water in the ammonia water collection tank 3 can be reduced. When the ammonia fuel ship cannot discharge the ammonia water in the ammonia water collection tank 3 temporarily, the amount of ammonia water in the ammonia water collection tank 3 can be reduced through this ammonia treatment device to avoid the situation where the tank is full and the ship cannot continue to use ammonia fuel.

[0062] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. An ammonia treatment device, characterized in that, include: A primary washing cabinet (1) is used to hold water. Ammonia gas from the ammonia fuel system can enter the primary washing cabinet (1) and dissolve in the water held in the primary washing cabinet (1) to form ammonia water. The secondary washing cabinet (2) is used to hold acid solution. Ammonia gas in the primary washing cabinet (1) can enter the secondary washing cabinet (2) and react with the acid solution held in the secondary washing cabinet (2) to generate ammonium salt. Ammonia water collection chamber (3), the ammonia water in the primary washing cabinet (1) can enter the ammonia water collection chamber (3), and the ammonia gas in the ammonia water collection chamber (3) can enter the secondary washing cabinet (2). Heating device (4) is used to heat the ammonia water in the ammonia water collection chamber (3); The ammonia water transfer device (7) includes an ammonia water transfer pipeline (71) connected to the ammonia water collection chamber (3) and the primary washing cabinet (1) and an ammonia water transfer pump (72) installed in the ammonia water transfer pipeline (71). The ammonia water transfer pump (72) is used to transport the ammonia water in the ammonia water collection chamber (3) to the primary washing cabinet (1).

2. The ammonia treatment device according to claim 1, characterized in that, The primary washing cabinet (1) has a first inlet end (11), a first outlet end (12) and a second outlet end (13). The first inlet end (11) is used to connect to the ammonia fuel system, and the ammonia gas of the ammonia fuel system can enter the primary washing cabinet (1) through the first inlet end (11). The secondary washing cabinet (2) has a second inlet end (21), a third inlet end (22) and a third outlet end (23). The second inlet end (21) is connected to the first outlet end (12). Ammonia gas in the primary washing cabinet (1) can enter the secondary washing cabinet (2) through the first outlet end (12) and the second inlet end (21). The third outlet end (23) is used for gas discharge. The ammonia collection chamber (3) has a fourth inlet end (31) and a fourth outlet end (32). The fourth inlet end (31) is connected to the second outlet end (13). The ammonia in the primary washing cabinet (1) can enter the ammonia collection chamber (3) through the second outlet end (13) and the fourth inlet end (31). The fourth outlet end (32) is connected to the third inlet end (22). The ammonia in the ammonia collection chamber (3) can enter the secondary washing cabinet (2) through the fourth outlet end (32) and the third inlet end (22).

3. The ammonia treatment device according to claim 2, characterized in that, It also includes a safety relief pipe (5) connecting the ammonia collection chamber (3) and the secondary washing cabinet (2), through which the ammonia gas in the ammonia collection chamber (3) can enter the secondary washing cabinet (2).

4. The ammonia treatment device according to claim 2, characterized in that, It also includes an ammonia water transfer pump (6), which is located between the second outlet end (13) and the fourth inlet end (31) and is used to transfer the ammonia water from the second outlet end (13) to the fourth inlet end (31).

5. The ammonia treatment apparatus according to claim 1, characterized in that, The heating device (4) includes a heating pipe (41) installed in the ammonia collection chamber (3). The heating pipe (41) is used to heat the medium entering. Both ends of the heating pipe (41) are equipped with heating device control valves (42).

6. The ammonia treatment apparatus according to any one of claims 1-5, characterized in that, There are two secondary washing cabinets (2). The ammonia gas in the primary washing cabinet (1) can enter one of the two secondary washing cabinets (2), and the ammonia gas in the ammonia water collection chamber (3) can enter one of the two secondary washing cabinets (2).

7. The ammonia treatment apparatus according to any one of claims 1-5, characterized in that, The ammonia water transfer device (7) also includes a cooler (73) installed in the ammonia water transfer pipeline (71), the cooler (73) being used to cool the ammonia water in the ammonia water transfer pipeline (71).

8. The ammonia treatment apparatus according to claim 7, characterized in that, The cooler (73) is connected to the output end of the ammonia water transport pump (72), and the output end of the ammonia water transport pump (72) is also connected to the shore discharge pipeline (8), which is used to connect to the ammonia water treatment equipment on shore.

9. The ammonia treatment apparatus according to any one of claims 1-5, characterized in that, The bottom of the secondary washing cabinet (2) is also provided with an ammonia discharge end (25) for discharging ammonia salts.

10. An ammonia-fueled ship, characterized in that, The ammonia treatment apparatus as described in any one of claims 1-9 further includes an ammonia fuel system, wherein the ammonia gas from the ammonia fuel system can enter the primary scrubbing tank (1).

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