An ammonia treatment system for a marine vessel

Abstract

The application provides an ammonia treatment system for a ship, which comprises, in sequence, an ammonia gas generating device, a gas collecting header, an ammonia cracking device, a hydrogen separation device and a hydrogen fuel cell, ammonia gas is cracked into hydrogen and nitrogen in the ammonia cracking device, the nitrogen is discharged into the atmosphere, the hydrogen is used in the hydrogen fuel cell and finally used for the power demand of the ship; the ammonia cracking device comprises a self-heating decomposition chamber and a catalytic combustion chamber, in the starting stage, the heat generated by the self-heating decomposition chamber is used for cracking treatment of ammonia gas, when the hydrogen fuel cell normally operates, the heat generated by the catalytic combustion chamber is used for cracking treatment of ammonia gas, and the cold start of the system is realized; the hydrogen separation device purifies the gas generated by the cracking reaction, improves the purity of hydrogen, reduces the influence on the fuel cell, and avoids the situation that uncracked ammonia gas is discharged into the atmosphere; in addition, the waste heat discharged from the ammonia cracking device is utilized for multiple times, and the energy utilization efficiency of the system is improved.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, specifically relating to an ammonia treatment system for ships. Background Technology

[0002] Hydrogen, as a carbon-free fuel, is abundant, and its only combustion product is water, making it considered the most ideal clean energy source. However, hydrogen's liquefaction temperature at atmospheric pressure is as low as -253°C, and the storage pressure for compressed hydrogen is as high as 30MPa to 70MPa. Currently, hydrogen production, processing, storage, and transportation all face technical challenges and are extremely expensive. In contrast, ammonia, as a hydrogen carrier, is also carbon-free, has the advantages of pollution-free combustion products, high energy density, and can be liquefied at -33°C at atmospheric pressure, giving it an inherent advantage in storage and transportation. Furthermore, ammonia has extensive experience in industrial production and application, and its infrastructure is relatively well-developed. Therefore, with the promotion and application of ammonia fuel in ships, ammonia transport ships and ammonia-powered ships will see significant development.

[0003] However, it is worth noting that ammonia is toxic and its safe use as ship fuel requires special consideration. There are limits on the concentration of ammonia emissions, and it must be treated to meet the requirements before it can be released into the atmosphere to reduce its toxic effects. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the present invention provides an ammonia treatment system for ships, comprising an ammonia permeation generating device, a permeation manifold, an ammonia cracking device, a hydrogen separation device, and a hydrogen fuel cell connected in sequence. Ammonia is cracked into hydrogen and nitrogen in the ammonia cracking device. The nitrogen is discharged into the atmosphere, while the hydrogen is reused in the hydrogen fuel cell and ultimately used for the ship's power needs. The ammonia cracking device includes a self-heating decomposition chamber and a catalytic combustion chamber. In the cold start mode, the heat generated by the self-heating decomposition chamber is used to crack the ammonia. Once the hydrogen fuel cell is operating normally, the heat generated by the catalytic combustion chamber is used to crack the ammonia, achieving a cold start for the system. The hydrogen separation device can purify the gas produced by the cracking reaction, improving the hydrogen purity, reducing the impact on the fuel cell, and preventing uncracked ammonia from being discharged into the atmosphere. Furthermore, the ammonia treatment system provided by the present invention also utilizes the waste heat from the exhaust gas discharged from the ammonia cracking device multiple times, which also has a beneficial effect on improving the system's energy utilization efficiency.

[0005] To achieve the above and other related objectives, the present invention provides an ammonia treatment system for ships, comprising:

[0006] Ammonia permeation generating device;

[0007] A venting manifold is connected to the ammonia venting generating device and is used to collect the ammonia gas generated by the ammonia venting generating device.

[0008] An ammonia cracking unit includes a first coil and a combustion chamber that are isolated from each other. The first coil is located on the inner wall of the ammonia cracking unit and surrounds the combustion chamber. The inlet end of the first coil is connected to the outlet end of the permeable manifold through a first pipe, and the ammonia gas undergoes a cracking reaction in the first coil. The combustion chamber is divided into a self-heating decomposition chamber and a catalytic combustion chamber that are isolated from each other. The inlet end of the self-heating decomposition chamber is connected to the outlet end of the permeable manifold through a second pipe, and the ammonia gas undergoes a combustion reaction in the self-heating decomposition chamber.

[0009] A hydrogen separation device is connected to the outlet end of the first coil and is used to separate hydrogen produced by the cracking reaction.

[0010] A hydrogen fuel cell, connected to the hydrogen separation device, is used to generate electricity from the hydrogen gas, and the exhaust gas generated by the hydrogen fuel cell is transported to the inlet of the catalytic combustion chamber via an exhaust gas manifold.

[0011] Optionally, the ammonia permeation generating device includes one or more of the following: a liquid ammonia storage tank, a liquid ammonia processing system, and an ammonia fuel supply system.

[0012] Optionally, a first control valve is provided on the first pipeline; a second control valve and a booster are provided on the second pipeline.

[0013] Optionally, the hydrogen separation device is connected to the inlet end of the venting manifold via a third pipeline. An ammonia detector and a three-way valve are installed on the third pipeline, with the ammonia detector located between the three-way valve and the hydrogen separation device.

[0014] Optionally, it also includes a solid hydrogen storage device, the gas inlet of which is connected to the hydrogen separation device via a fourth pipeline, and the solid hydrogen storage device is used to absorb excess hydrogen separated by the hydrogen separation device.

[0015] Optionally, a cooler is provided on the fourth pipeline for cooling the hydrogen gas.

[0016] Optionally, the outlet of the solid hydrogen storage device is connected to the hydrogen fuel cell and the catalytic combustion chamber, respectively, to supply hydrogen to the hydrogen fuel cell and the catalytic combustion chamber.

[0017] Optionally, the electrical energy generated by the hydrogen fuel cell is input into a DC power grid and an energy storage device.

[0018] Optionally, a second coil is provided in the venting manifold, the inlet end of the second coil is connected to the outlet end of the catalytic combustion chamber, and the outlet end of the second coil is connected to the atmosphere.

[0019] Optionally, the volume of the catalytic combustion chamber is larger than the volume of the autothermal decomposition chamber.

[0020] The ammonia treatment system for ships provided by this invention has at least the following beneficial effects:

[0021] The ammonia treatment system for ships provided by this invention includes an ammonia permeation generating device, a permeation manifold, an ammonia cracking device, a hydrogen separation device, and a hydrogen fuel cell connected in sequence. Ammonia is cracked into hydrogen and nitrogen in the ammonia cracking device. The nitrogen is released into the atmosphere, while the hydrogen is reused in the hydrogen fuel cell and ultimately used to meet the ship's power needs. The ammonia cracking device includes a self-heating decomposition chamber and a catalytic combustion chamber. In the cold start mode, the heat generated in the self-heating decomposition chamber is used to crack the ammonia. Once the hydrogen fuel cell is running normally, the heat generated in the catalytic combustion chamber is used to crack the ammonia, achieving a cold start for the system. The hydrogen separation device can purify the gas produced by the cracking reaction, improving hydrogen purity, reducing the impact on the fuel cell, and preventing uncracked ammonia from being released into the atmosphere. Furthermore, the ammonia treatment system provided by this invention also utilizes the waste heat from the exhaust gas discharged from the ammonia cracking device multiple times, which also has a beneficial effect on improving the system's energy utilization efficiency. Attached Figure Description

[0022] Figure 1 The diagram shown is a schematic representation of an ammonia treatment system for a ship provided in an embodiment.

[0023] Figure 2 The diagram shown is a schematic representation of the ammonia cracking unit in the ammonia treatment system provided in the embodiment.

[0024] Figure 3 The diagram shown is a cross-sectional view of the ammonia cracking unit in the ammonia treatment system provided in the embodiment.

[0025] Component designation explanation

[0026] 1. Liquid ammonia storage tank 703 Anode outlet end

[0027] 2. Liquid ammonia treatment system 704 Cathode outlet

[0028] 3. Ammonia fuel supply system 81. First control valve

[0029] 4. Vent manifold 82. Second control valve

[0030] 401 Second coil air inlet end 83 Safety valve

[0031] 402 Second coil outlet 84 Three-way valve

[0032] 5 Ammonia Cracking Unit 91 First Pipeline

[0033] 51 First coil 92 Second pipe

[0034] 511 First coil inlet end 93 Third pipeline

[0035] 512 First coil outlet 94 Fourth pipeline

[0036] 52 Self-heating decomposition chamber 101 First exhaust gas outlet

[0037] 521 Self-heating decomposition chamber inlet 102 Second exhaust port

[0038] 522 Self-heating decomposition chamber outlet 103 Oxygen source

[0039] 53 Catalytic Combustion Chamber 10 Turbocharger

[0040] 531 Catalytic combustion chamber inlet end 11 Exhaust gas manifold

[0041] 532 Catalytic combustion chamber outlet end 12 Ammonia detector

[0042] 54 Vacuum insulation layer 13 DC power grid

[0043] 6 Hydrogen separation unit 14 Energy storage unit

[0044] 7 Hydrogen fuel cells 15 Solid hydrogen storage devices

[0045] 701 Anode Inlet 16 Cooler

[0046] 702 Cathode Inlet Detailed Implementation

[0047] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0048] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Although the illustrations only show components related to the present invention and are not drawn according to the actual number, shape and size of the components, the shape, quantity, positional relationship and proportion of each component can be arbitrarily changed under the premise of realizing the technical solution of this invention, and the layout of the components may also be more complex.

[0049] Example

[0050] This embodiment provides an ammonia treatment system for ships, such as... Figure 1As shown, it includes an ammonia permeation generating device, a permeation manifold 4, an ammonia cracking device 5, a hydrogen separation device 6, and a hydrogen fuel cell 7.

[0051] As an example, the ammonia venting device includes one or more of the following: a liquid ammonia storage tank, a liquid ammonia processing system, and an ammonia fuel supply system. For instance, for a liquid ammonia transport ship or an ammonia-powered ship, the ammonia venting device includes a liquid ammonia storage tank. Due to ship movement or external heat input, the gas pressure inside the tank may exceed the safety valve setting value under certain circumstances, generating ammonia. Large amounts of ammonia may also be generated during operations such as gas replacement and cooling. For a liquid ammonia transport ship, the ammonia venting device includes a liquid ammonia processing system. For an ammonia-powered ship (including an ammonia-powered liquid ammonia transport ship), the ammonia venting device includes an ammonia fuel supply system, which generates ammonia during operation, such as nitrogen purging or system venting. In this embodiment, as... Figure 1 As shown, the ammonia permeation generating device includes a liquid ammonia storage tank 1, a liquid ammonia processing system 2, and an ammonia fuel supply system 3. The liquid ammonia storage tank 1 is used for storing liquid ammonia on liquid ammonia transport ships or storing ammonia fuel on ammonia-powered ships, and can be a Type A tank or other tank types. The liquid ammonia processing system 2 is used for cargo processing on liquid ammonia transport ships, mainly including cargo pumps, heat exchangers, and related pipelines and valves. In this embodiment, ammonia permeation at various points in the system is considered, so it is uniformly categorized under the liquid ammonia processing system. The ammonia fuel supply system 3 is used for supplying ammonia fuel to ammonia-powered ships, mainly including fuel pumps, heat exchangers, and related pipelines and valves. In this embodiment, ammonia permeation at various points in the system is considered, so it is uniformly categorized under the ammonia fuel supply system.

[0052] like Figure 1 As shown, the vent manifold 4 is connected to the ammonia venting device and is used to collect the ammonia gas generated by the ammonia venting device. A safety valve 83 is also installed between the vent manifold 4 and the liquid ammonia storage tank 1. In addition, a second coil (not shown in the figure) is installed in the vent manifold 4. The inlet end 401 of the second coil is connected to the outlet end 532 of the catalytic combustion chamber, and the outlet end 402 of the second coil is connected to the atmosphere.

[0053] like Figure 2 As shown, the ammonia cracking unit 5 includes a first coil 51 and a combustion chamber that are isolated from each other. The combustion chamber is divided into a self-heating decomposition chamber 52 and a catalytic combustion chamber 53 that are isolated from each other. Figure 3 As shown, the first coil 51 is located on the inner wall of the ammonia cracking unit 5, and the first coil 51 is arranged around the combustion chamber. As an example, the volume of the catalytic combustion chamber 53 is larger than the volume of the self-heating decomposition chamber 52. In this embodiment, a vacuum insulation layer 54 is also provided on the side wall of the ammonia cracking unit 5, which has a good insulation effect and can reduce the heat loss of the ammonia cracking unit 5, thereby improving the ammonia cracking reaction efficiency; in other optional embodiments, insulation can also be achieved by applying an external insulation layer.

[0054] like Figure 1 As shown, the inlet 511 of the first coil is connected to the outlet of the vent manifold 4 via the first pipe 91. Ammonia gas in the vent manifold 4 is transported to the first coil 51 via the first pipe 91. A catalyst is placed in the first coil 51 to cause the ammonia gas to undergo a cracking reaction. The outlet 512 of the first coil is connected to the hydrogen separation device 6, and the hydrogen and nitrogen gas generated by the cracking reaction are transported to the hydrogen separation device 6. As an example, the first coil 51 located in the self-heating decomposition chamber 52 is filled with a first catalyst, which is a highly active noble metal catalyst, such as a ruthenium-based catalyst. The first coil 51 located in the catalytic combustion chamber 53 is filled with a second catalyst, which is a lower-cost metal catalyst, such as an iron-based catalyst or a nickel-based catalyst. As an example, a first control valve 81 is provided on the first pipe 91 to control the opening and closing of the first pipe 91.

[0055] like Figure 1 As shown, the inlet 521 of the self-heating decomposition chamber is connected to the outlet of the venting manifold 4 via the second pipe 92. Ammonia in the venting manifold 4 is transported to the self-heating decomposition chamber 52 via the second pipe 92. The inlet 521 of the self-heating decomposition chamber is also connected to the oxygen source 103, which supplies oxygen to the self-heating decomposition chamber 52. The oxygen and ammonia undergo a combustion reaction in the self-heating decomposition chamber 52. The outlet 522 of the self-heating decomposition chamber is connected to the first exhaust port 101, which is used to discharge the exhaust gas generated in the self-heating decomposition chamber 52 and transport the generated exhaust gas to the inlet 401 of the second coil. In this embodiment, a second control valve 82 and a booster 10 are provided on the second pipeline 92. The second control valve 82 is used to control the opening and closing of the second pipeline 92, and the booster 10 is used to pressurize the ammonia and perform compression ignition combustion in the autothermal decomposition chamber 52. In other optional embodiments, the booster 10 may not be provided, but an electric spark plug may be provided in the autothermal decomposition chamber 52 to ignite the ammonia and oxygen.

[0056] like Figure 1 As shown, the inlet end 531 of the catalytic combustion chamber is connected to the exhaust gas manifold 11; the outlet end 532 of the catalytic combustion chamber is connected to the inlet end 401 of the second coil and also to the second exhaust port 102. The second exhaust port 102 is used to discharge the exhaust gas generated in the catalytic combustion chamber 53 and to transport the generated exhaust gas to the inlet end 401 of the second coil.

[0057] like Figure 1As shown, the hydrogen separation device 6 is connected to the outlet 512 of the first coil, used to separate the hydrogen produced by the cracking reaction and transport the separated hydrogen to the hydrogen fuel cell 7. Additionally, the hydrogen separation device 6 is connected to the inlet of the vent manifold 4 via a third pipeline 93. An ammonia detector 12 and a three-way valve 84 are installed on the third pipeline 93, with the ammonia detector 12 located between the three-way valve 84 and the hydrogen separation device 6. As an example, the impurities (including nitrogen and undecomposed ammonia) output from the hydrogen separation device 6 are transported to the ammonia detector 12 via the third pipeline 93. The ammonia detector 12 detects the ammonia content in the impurities. If it meets emission standards, it is discharged into the atmosphere through the three-way valve 84; if it does not meet emission standards, it is transported to the vent manifold 4 for further cracking. The hydrogen separation device 6 purifies the gases produced by the cracking reaction, improving the purity of the hydrogen, reducing its impact on the fuel cell, and preventing the release of undecomposed ammonia into the atmosphere.

[0058] like Figure 1 As shown, the hydrogen fuel cell 7 has an anode inlet 701, a cathode inlet 702, an anode outlet 703, and a cathode outlet 704. The anode inlet 701 receives hydrogen separated from the hydrogen separator 6. The cathode inlet 702 supplies oxygen to the hydrogen fuel cell 7. Hydrogen and oxygen undergo an electrochemical reaction in the hydrogen fuel cell 7, converting chemical energy into electrical energy. The resulting high-temperature exhaust gas (unreacted hydrogen) from the anode is transported to the exhaust manifold 11 via the anode outlet 703, and the resulting high-temperature exhaust gas (unreacted oxygen) from the cathode is transported to the exhaust manifold 11 via the cathode outlet 704. As an example, the electrical energy generated by the hydrogen fuel cell 7 is fed into the DC power grid 13. After DC-AC conversion to meet the ship's electrical requirements (voltage, frequency, etc.), it is supplied to the ship's electrical system. Furthermore, the electrical energy generated by the hydrogen fuel cell 7 is stored in an energy storage device 14 for external power supply when needed. The energy storage type includes batteries.

[0059] like Figure 1As shown, the ammonia treatment system provided in this embodiment also includes a solid hydrogen storage device 15. The inlet of the solid hydrogen storage device 15 is connected to the hydrogen separation device 6 through a fourth pipeline 94 to absorb excess hydrogen separated by the hydrogen separation device 6. In addition, a cooler 16 is provided on the fourth pipeline 94 to reduce the hydrogen adsorption temperature and improve the adsorption efficiency. The outlet of the solid hydrogen storage device 15 is connected to the anode inlet 701 and the catalytic combustion chamber inlet 531 to supply hydrogen to the hydrogen fuel cell 7 and the catalytic combustion chamber 53, respectively. As an example, the solid hydrogen storage device 15 contains a magnesium-based hydrogen storage material, which can be used to absorb excess hydrogen separated by the hydrogen separation device 6. Under heating conditions, hydrogen can be released. The heating medium can be the high-temperature exhaust gas discharged from the self-heating decomposition chamber 52 and the catalytic combustion chamber 53. The released high-temperature hydrogen can be used to generate electricity in the hydrogen fuel cell 7, or it can be supplied to the catalytic combustion chamber 53 again through the exhaust manifold 11 to compensate for the insufficient hydrogen content output from the anode outlet 703. As an example, cooler 16 can use the low-temperature ammonia gas generated by the ammonia venting device to cool the hydrogen gas, and the heated ammonia gas can then re-enter the venting manifold 4.

[0060] like Figure 1 As shown, the outlet end of the exhaust gas manifold 11 is connected to the inlet end 531 of the catalytic combustion chamber. The hydrogen and oxygen in the exhaust gas manifold 11 are transported to the catalytic combustion chamber 53 and oxidized and burned in the catalytic combustion chamber 53 or catalytically oxidized and burned under the action of a catalyst (the combustion process is more controllable), thereby providing heat for the ammonia cracking reaction in the first coil 51.

[0061] The working principle of the ammonia treatment system for ships provided in this embodiment is as follows:

[0062] First, during the startup phase of the treatment system, the first control valve 81 is closed and the second control valve 82 is opened. Ammonia gas from the vent manifold 4 passes sequentially through the second control valve 82 and the booster 10 into the autothermal decomposition chamber 52. Oxygen source 103 supplies oxygen to the autothermal decomposition chamber 52, where oxygen and ammonia undergo a combustion reaction, thus providing heat for the ammonia cracking reaction. The temperature required for ammonia cracking typically varies depending on the catalyst, generally around 500℃-1100℃. Due to the poor combustibility of ammonia, the actual combustion temperature is relatively low. Therefore, a precious metal catalyst, such as a ruthenium-based catalyst, is used in the first coil 51 located in the autothermal decomposition chamber 52. Precious metal catalysts have high activity and are only used in the cold start phase, making their cost relatively controllable.

[0063] Next, when the reaction temperature of ammonia cracking is reached in the self-heating decomposition chamber 52, the first control valve 81 is opened, and ammonia gas from the venting manifold 4 is simultaneously transported to the first coil 51. The ammonia gas is cracked in the first coil 51 to generate nitrogen and hydrogen gas, which are then transported to the hydrogen separation device 6 through the gas outlet 512 of the first coil.

[0064] Next, the hydrogen separation device 6 delivers the separated hydrogen to the hydrogen fuel cell 7. Additionally, oxygen is supplied to the hydrogen fuel cell 7 through the cathode inlet 702. The hydrogen and oxygen undergo an electrochemical reaction within the hydrogen fuel cell 7, converting chemical energy into electrical energy. The resulting high-temperature anode exhaust gas (unreacted hydrogen) is delivered to the exhaust manifold 11 through the anode outlet 703, and the resulting high-temperature cathode exhaust gas (unreacted oxygen) is delivered to the exhaust manifold 11 through the cathode outlet 704. Furthermore, the exhaust manifold 11 also receives hydrogen from the solid hydrogen storage device 15.

[0065] Finally, the hydrogen and oxygen in the exhaust manifold 11 are transported to the catalytic combustion chamber 53 and oxidized and burned in the catalytic combustion chamber 53. When the reaction temperature of ammonia cracking is reached in the catalytic combustion chamber 53, the second control valve 82 and the booster 10 are closed. Ammonia combustion no longer occurs in the autothermal decomposition chamber 52. The ammonia cracking reaction is carried out only by the high temperature provided by the catalytic combustion chamber 53. At this time, the ammonia cracking device 5 enters the normal operation mode.

[0066] In this embodiment, the self-heating decomposition chamber 52 is only used in the cold start stage. The ammonia cracking reaction is mainly heated by the catalytic combustion chamber 53, and the volume of the catalytic combustion chamber 53 is larger than the volume of the self-heating decomposition chamber 52. This can also reduce the amount of the first catalyst in the first coil 51 located in the self-heating decomposition chamber 52, which helps to save costs.

[0067] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An ammonia treatment system for ships, characterized in that, include: Ammonia permeation generating device; A venting manifold is connected to the ammonia venting generating device and is used to collect the ammonia gas generated by the ammonia venting generating device. An ammonia cracking unit includes a first coil and a combustion chamber that are isolated from each other. The first coil is located on the inner wall of the ammonia cracking unit and surrounds the combustion chamber. The inlet end of the first coil is connected to the outlet end of the permeable manifold through a first pipe, and the ammonia gas undergoes a cracking reaction in the first coil. The combustion chamber is divided into a self-heating decomposition chamber and a catalytic combustion chamber that are isolated from each other. The inlet end of the self-heating decomposition chamber is connected to the outlet end of the permeable manifold through a second pipe, and the ammonia gas undergoes a combustion reaction in the self-heating decomposition chamber. A hydrogen separation device is connected to the outlet end of the first coil and is used to separate hydrogen produced by the cracking reaction. A hydrogen fuel cell, connected to the hydrogen separation device, is used to generate electricity from the hydrogen gas, and the exhaust gas generated by the hydrogen fuel cell is transported to the inlet of the catalytic combustion chamber via an exhaust gas manifold.

2. The ammonia treatment system for ships according to claim 1, characterized in that, The ammonia permeation generating device includes one or more of the following: a liquid ammonia storage tank, a liquid ammonia processing system, and an ammonia fuel supply system.

3. The ammonia treatment system for ships according to claim 1, characterized in that, The first pipeline is equipped with a first control valve; the second pipeline is equipped with a second control valve and a booster.

4. The ammonia treatment system for ships according to claim 1, characterized in that, The hydrogen separation device is connected to the inlet end of the venting manifold via a third pipeline. An ammonia detector and a three-way valve are installed on the third pipeline, with the ammonia detector located between the three-way valve and the hydrogen separation device.

5. The ammonia treatment system for ships according to claim 1, characterized in that, It also includes a solid hydrogen storage device, the inlet of which is connected to the hydrogen separation device via a fourth pipeline, and the solid hydrogen storage device is used to absorb the excess hydrogen separated by the hydrogen separation device.

6. The ammonia treatment system for ships according to claim 5, characterized in that, A cooler is installed on the fourth pipeline to cool the hydrogen gas.

7. The ammonia treatment system for ships according to claim 5, characterized in that, The outlet of the solid hydrogen storage device is connected to the hydrogen fuel cell and the catalytic combustion chamber, respectively, to supply hydrogen to the hydrogen fuel cell and the catalytic combustion chamber.

8. The ammonia treatment system for ships according to claim 1, characterized in that, The electrical energy generated by the hydrogen fuel cell is input into the DC power grid and energy storage device.

9. The ammonia treatment system for ships according to claim 1, characterized in that, The venting manifold is equipped with a second coil, the inlet end of which is connected to the outlet end of the catalytic combustion chamber, and the outlet end of which is connected to the atmosphere.

10. The ammonia treatment system for ships according to claim 1, characterized in that, The volume of the catalytic combustion chamber is greater than the volume of the autothermal decomposition chamber.

Images