Tail gas treatment system

Abstract

The invention provides a tail gas treatment system. The tail gas treatment system comprises a battery module, a reaction structure and an absorption structure, the battery module is provided with a cathode discharge port and an anode discharge port; the reaction structure is provided with a first inlet and a second inlet, the first inlet is communicated with the cathode outlet, and the second inlet is communicated with the anode outlet; the absorption structure is provided with a gas inlet and a liquid inlet, the gas inlet is communicated with the outlet of the reaction structure, and the liquid inlet is communicated with the anode outlet. A first gas discharged from a cathode discharge port and a second gas discharged from an anode discharge port are respectively input into a reaction structure through a first inlet and a second inlet to react and generate a to-be-treated gas; the to-be-treated gas discharged from the outlet of the reaction structure and the liquid discharged from the anode outlet are respectively input into the absorption structure through the gas inlet and the liquid inlet for absorption and production of dischargeable materials, so that the problems of hydrogen gathering and environmental liquid accumulation of the hydrogen fuel cell engine in a closed scene in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cell systems, and in particular to a tail exhaust treatment system. Background Art

[0002] As environmental protection concepts become more popular and national policies are promoted, the application scenarios of hydrogen fuel cells are gradually expanding. Therefore, with the promotion of various types of hydrogen fuel cell vehicles, the use of hydrogen fuel cell engines in closed situations is inevitable.

[0003] In the prior art, common treatment methods for tail gas of hydrogen fuel cell engines include dilution emission method, catalytic combustion method, etc. However, in closed scenarios, these tail gas treatment methods have great safety hazards. For example, the hydrogen discharged by the dilution emission method accumulates in a closed environment and is easy to burn and explode; the high temperature generated by the catalytic combustion method can easily reduce the service life of the hydrogen fuel cell, and the flame generated can easily ignite the surrounding flammable materials and cause a fire. Moreover, the random discharge of liquid produced by the hydrogen-oxygen reaction in the hydrogen fuel cell will cause the environment to be humid and produce liquid stains, affecting normal operation in closed scenarios. Summary of the invention

[0004] The main purpose of the present invention is to provide a tail exhaust treatment system to solve the problems of hydrogen accumulation and liquid accumulation in the environment of hydrogen fuel cell engines in closed scenarios in the prior art.

[0005] In order to achieve the above-mentioned objectives, the present invention provides a tail exhaust treatment system, comprising: a battery module, having a cathode exhaust port and an anode exhaust port, the cathode exhaust port is used to discharge a first gas, and the anode exhaust port is used to discharge a second gas and a liquid; a reaction structure, having a first inlet and a second inlet, the first inlet is connected to the cathode exhaust port, and the second inlet is connected to the anode exhaust port, so as to input the first gas and the second gas into the reaction structure for reaction and generate a gas to be treated; an absorption structure, having a gas inlet and a liquid inlet, the gas inlet is connected to the outlet of the reaction structure, and the liquid inlet is connected to the anode exhaust port, so as to input the gas and liquid to be treated into the absorption structure for absorption and generate a dischargeable material.

[0006] Furthermore, the tail exhaust treatment system also includes: a gas-liquid separation structure, having a separation inlet, a gas outlet and a liquid outlet, the separation inlet is connected to the anode exhaust outlet, the gas outlet is connected to the first inlet, and the liquid outlet is connected to the liquid inlet to separate the second gas and liquid discharged from the anode exhaust outlet.

[0007] Furthermore, the tail exhaust treatment system also includes: an exhaust pipeline, both ends of which are respectively connected to the gas outlet and the first inlet to supply the second gas separated by the gas-liquid separation structure to the reaction structure; a first control valve, which is arranged on the exhaust pipeline, and the first control valve is adjustable to control the flow of the exhaust pipeline by adjusting the first control valve; a first one-way valve, which is arranged on the exhaust pipeline to allow the material transported by the exhaust pipeline to be unidirectionally supplied to the reaction structure.

[0008] Furthermore, the tail discharge treatment system also includes: a drainage pipeline, the two ends of which are respectively connected to the liquid outlet and the liquid inlet, so as to transport the liquid separated by the gas-liquid separation structure to the absorption structure; a second control valve, which is arranged on the drainage pipeline, and the second control valve is adjustable to regulate the flow of the drainage pipeline by adjusting the second control valve; a second one-way valve, which is arranged on the drainage pipeline, so that the material transported by the drainage pipeline is transported to the absorption structure in one direction.

[0009] Furthermore, the tail exhaust treatment system also includes: an exhaust pipeline, both ends of which are connected to the cathode exhaust port and the second inlet respectively, so as to deliver the first gas discharged from the cathode exhaust port to the reaction structure; a third control valve, which is arranged on the exhaust pipeline, and the third control valve is adjustable to control the flow of the exhaust pipeline by adjusting the third control valve; a third one-way valve, which is arranged on the exhaust pipeline, so that the material transported by the exhaust pipeline is unidirectionally delivered to the reaction structure.

[0010] Furthermore, the exhaust pipeline includes: a main pipeline, which is connected to the cathode exhaust port; a third control valve is arranged on the main pipeline to regulate the flow of the main pipeline; a main pipeline, both ends of which are respectively connected to the main pipeline and the second inlet; and a third one-way valve is arranged on the main pipeline.

[0011] Furthermore, the tail exhaust treatment system also includes: a bypass pipeline, both ends of which are connected to the main pipeline and the tail exhaust structure respectively; a bypass valve, which is arranged on the bypass pipeline to regulate the flow of the bypass pipeline by controlling the bypass valve to regulate the flow of the main pipeline to the main pipeline.

[0012] Furthermore, the absorption structure has a material discharge port for discharging dischargeable materials, and the tail discharge treatment system also includes: a tail discharge structure, which is connected to the material discharge port to transport the dischargeable materials discharged from the absorption structure to the tail discharge structure; the tail discharge structure is connected to the anode discharge port to transport at least part of the first gas discharged from the anode discharge port to the tail discharge structure.

[0013] Furthermore, a ball mill and a catalyst are arranged in the reaction structure to improve the synthesis efficiency of the gas to be treated; and / or the tail exhaust treatment system also includes a hydrogen concentration detection structure, which is arranged between the cathode exhaust port and the first inlet to detect the concentration of the second gas input into the reaction structure.

[0014] Furthermore, the gas inlet is arranged at the top of the absorption structure, and the liquid inlet is arranged at the bottom of the absorption structure; and / or the absorption structure is provided with a maximum liquid level line and a minimum liquid level line, the maximum liquid level line is lower than the gas inlet, and the minimum liquid level line is higher than the liquid inlet; and / or a liquid level sensor is arranged in the absorption structure to detect the liquid level in the absorption structure; and / or a drain port is arranged at the bottom of the absorption structure to discharge excess liquid in the absorption structure.

[0015] Applying the technical solution of the present invention, the present invention provides a tail exhaust treatment system, which includes a battery module, a reaction structure and an absorption structure. The battery module has a cathode exhaust port and an anode exhaust port; the reaction structure has a first inlet and a second inlet, the first inlet is connected to the cathode exhaust port, and the second inlet is connected to the anode exhaust port; the absorption structure has a gas inlet and a liquid inlet, the gas inlet is connected to the outlet of the reaction structure, and the liquid inlet is connected to the anode exhaust port. The cathode outlet of the battery module is used to discharge the first gas, and the anode outlet is used to discharge the second gas and liquid; the first gas discharged from the cathode outlet and the second gas discharged from the anode outlet are respectively input into the reaction structure through the first inlet and the second inlet to react and generate the gas to be treated; the gas to be treated discharged from the outlet of the reaction structure and the liquid discharged from the anode outlet are respectively input into the absorption structure through the gas inlet and the liquid inlet to absorb and produce the dischargeable material, so that the hydrogen discharged from the battery module and the nitrogen in the air are first generated in the reaction structure, and then the ammonia and water are generated in the absorption structure. Monohydrate ammonia is convenient for tail discharge treatment, which is beneficial to reduce the ammonia content and liquid water in the tail discharge, and can heat the monohydrate ammonia to produce ammonia when needed. At the same time, ammonia, as a colorless gas with a pungent odor, can be used as a warning of excessive emissions, improve the safety and reliability of the tail discharge treatment system, and thus solve the problem of hydrogen accumulation and environmental liquid accumulation in the closed scene of the hydrogen fuel cell engine in the prior art.

[0016] The tail exhaust treatment system provided by the present invention effectively improves the efficiency and environmental friendliness of tail exhaust treatment by reacting the first gas and the second gas discharged from the battery module in the reaction structure and then absorbing and treating them through the absorption structure. The arrangement of the ball mill and the catalyst in the reaction structure further enhances the rate and completeness of the gas reaction, while the addition of the hydrogen concentration detection structure ensures the safety and controllability of the reaction process. This design not only reduces the emission of harmful gases and improves the stability of the system operation, but also reduces the energy consumption of tail exhaust treatment, making a significant contribution to environmental protection and energy conservation and emission reduction.

[0017] The tail exhaust treatment system provided by the present invention realizes efficient, safe and environmentally friendly treatment of battery module tail exhaust through its unique structural design and functional configuration, has significant practical effect improvement and application benefits, and is an important innovation in the field of battery tail exhaust treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structural flow of an embodiment of a tail exhaust treatment system according to the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 1. Battery module; 2. Reaction structure; 3. Absorption structure; 4. Gas-liquid separation structure; 5. Exhaust pipeline; 51. First control valve; 52. First non-return valve; 6. Drain pipeline; 61. Second control valve; 62. Second non-return valve; 7. Exhaust pipeline; 71. Third control valve; 72. Third non-return valve; 73. Main pipeline; 74. Main pipeline; 75. Bypass pipeline; 76. Bypass valve; 8. Tail exhaust structure. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Please refer to Figure 1 The present invention provides a tail exhaust treatment system, which includes a battery module 1, a reaction structure 2 and an absorption structure 3. The battery module 1 has a cathode exhaust port and an anode exhaust port, the cathode exhaust port is used to discharge a first gas, and the anode exhaust port is used to discharge a second gas and a liquid; the reaction structure 2 has a first inlet and a second inlet, the first inlet is connected to the cathode exhaust port, and the second inlet is connected to the anode exhaust port, so as to input the first gas and the second gas into the reaction structure 2 for reaction and generate a gas to be treated; the absorption structure 3 has a gas inlet and a liquid inlet, the gas inlet is connected to the outlet of the reaction structure 2, and the liquid inlet is connected to the anode exhaust port, so as to input the gas and liquid to be treated into the absorption structure 3 for absorption and generate dischargeable materials. By treating the gas and the liquid separately, the tail exhaust treatment system in the present application effectively avoids the influence of gas-liquid mixing on the subsequent treatment process, and improves the treatment efficiency and safety. It is suitable for the tail exhaust treatment of various battery modules 1, especially in fuel cell vehicles, fixed fuel cell power stations and other occasions, and can significantly reduce the pollution of the tail exhaust to the environment.

[0024] The present invention provides a tail exhaust treatment system, which includes a battery module 1, a reaction structure 2 and an absorption structure 3. The cathode exhaust port of the battery module 1 is used to discharge a first gas, and the anode exhaust port is used to discharge a second gas and a liquid; the first gas discharged from the cathode exhaust port and the second gas discharged from the anode exhaust port are respectively input into the reaction structure 2 through the first inlet and the second inlet to react and generate a gas to be treated; the gas to be treated discharged from the outlet of the reaction structure 2 and the liquid discharged from the anode exhaust port are respectively input into the absorption structure 3 through the gas inlet and the liquid inlet to absorb and produce a dischargeable material, so that the hydrogen discharged from the battery module 1 and the nitrogen in the air are first generated in the reaction structure 2, and then the ammonia and water are generated in the absorption structure 3. Monohydrated ammonia is generated to facilitate tail exhaust treatment, which is beneficial to reduce the ammonia content and liquid water in the tail exhaust, and can heat the monohydrated ammonia to generate ammonia when needed. At the same time, ammonia, as a colorless gas with a pungent odor, can be used as a warning of excessive emissions, improving the safety and reliability of the tail exhaust treatment system, thereby solving the problems of hydrogen accumulation and liquid accumulation in the environment in closed scenarios in hydrogen fuel cell engines in existing technologies.

[0025] Generally, the first gas in the embodiment of the present application is air, the second gas is hydrogen, and the liquid is water; the gas to be treated generated by the reaction of nitrogen and hydrogen in the air in the reaction structure 2 is ammonia; and the dischargeable material generated by the reaction of ammonia and water in the absorption structure 3 is ammonia monohydrate.

[0026] Specifically, in order to separate the second gas and liquid discharged from the anode discharge port, so as to facilitate the input of the reaction structure 2 and the absorption structure 3 respectively, the tail discharge treatment system also includes a gas-liquid separation structure 4, and the gas-liquid separation structure 4 has a separation inlet, a gas outlet and a liquid outlet, and the separation inlet is connected to the anode discharge port, the gas outlet is connected to the first inlet, and the liquid outlet is connected to the liquid inlet to separate the second gas and liquid discharged from the anode discharge port. The addition of the gas-liquid separation structure 4 enables the tail discharge treatment system in the embodiment of the present application to more accurately control the treatment process of gas and liquid, avoids the influence of liquid on gas reaction, and improves the purity and efficiency of the reaction. Such a setting reduces the water content in the gas entering the reaction structure 2, prevents water vapor condensation from causing the temperature in the reaction structure 2 to drop, and then increases the catalytic reaction rate, which helps to formulate a strategy for efficient catalytic reaction of tail discharge hydrogen. In industrial production, especially in battery manufacturing and energy conversion processes, this separation structure can effectively improve the environmental protection and economy of tail discharge treatment.

[0027] Specifically, in order to input the second gas into the reaction structure 2, the tail exhaust treatment system also includes an exhaust pipeline 5, a first control valve 51 and a first one-way valve 52, and the two ends of the exhaust pipeline 5 are respectively connected to the gas outlet and the first inlet to input the second gas separated by the gas-liquid separation structure 4 to the reaction structure 2; the first control valve 51 is arranged on the exhaust pipeline 5, and the first control valve 51 is adjustable to adjust the flow of the exhaust pipeline 5 by adjusting the first control valve 51; the first one-way valve 52 is arranged on the exhaust pipeline 5 so that the material transported by the exhaust pipeline 5 is unidirectionally transported to the reaction structure 2, thereby preventing the ammonia produced in the reaction structure 2 from diffusing along the exhaust pipeline 5 to the shell of the battery module 1, so as to avoid affecting the activity of the catalyst platinum on the membrane electrode, thereby improving the efficiency of the hydrogen fuel cell. Through the arrangement of the first control valve 51 and the first one-way valve 52, the pressure, flow rate, exhaust interval time and flow direction of the second gas are accurately controlled to ensure the controllability and safety of the reaction process. During the operation of the battery module 1, this precise control is crucial to maintaining system stability and improving energy utilization efficiency.

[0028] Optionally, the first control valve 51 is a solenoid valve, which interacts with a controller of the hydrogen fuel cell module 1 in actual application to achieve automatic control.

[0029] Similarly, in order to input the liquid into the absorption structure 3, the tail discharge treatment system also includes a liquid discharge pipeline 6, a second control valve 61 and a second one-way valve 62. The two ends of the liquid discharge pipeline 6 are respectively connected to the liquid outlet and the liquid inlet, so as to transmit the liquid separated by the gas-liquid separation structure 4 to the absorption structure 3; the second control valve 61 is arranged on the liquid discharge pipeline 6, and the second control valve 61 is adjustable to adjust the flow of the liquid discharge pipeline 6 by adjusting the second control valve 61; the second one-way valve 62 is arranged on the liquid discharge pipeline 6 so that the material transported by the liquid discharge pipeline 6 is unidirectionally transmitted to the absorption structure 3. By setting the second control valve 61 and the second one-way valve 62, the pressure, flow rate, interval time of the discharge and the flow direction of the liquid can be accurately controlled. In the tail discharge treatment of the battery module, this liquid treatment method is of great significance for achieving zero emission and resource recovery.

[0030] Optionally, the second control valve 61 is a solenoid valve, which interacts with a controller of the hydrogen fuel cell module 1 in actual application to achieve automatic control.

[0031] Specifically, in order to discharge air into the reaction structure 2, the tail exhaust treatment system also includes an exhaust pipeline 7, a third control valve 71 and a third one-way valve 72, and the two ends of the exhaust pipeline 7 are respectively connected to the cathode exhaust port and the second inlet, so as to deliver the first gas discharged from the cathode exhaust port to the reaction structure 2; the third control valve 71 is arranged on the exhaust pipeline 7, and the third control valve 71 is adjustable to adjust the flow of the exhaust pipeline 7 by adjusting the third control valve 71; the third one-way valve 72 is arranged on the exhaust pipeline 7, so that the material transported by the exhaust pipeline 7 is unidirectionally delivered to the reaction structure 2, thereby preventing the ammonia produced in the reaction structure 2 from diffusing along the exhaust pipeline 7 to the shell of the battery module 1, so as to avoid affecting the activity of the catalyst platinum on the membrane electrode, thereby improving the efficiency of the hydrogen fuel cell. Through the arrangement of the third control valve and the third one-way valve, the pressure, flow rate, interval time of the discharge and the flow direction of the first gas are accurately and effectively controlled, so as to ensure the normal operation of the reaction structure 2 and avoid the gas backflow from damaging the battery module 1. In the tail discharge processing of the battery module 1, this control mechanism plays an important role in improving the system stability and safety.

[0032] Furthermore, in order to facilitate the control of the flow rate of air input into the reaction structure 2, the exhaust pipeline 7 includes a main pipeline 73 and a main pipeline 74, and the main pipeline 73 is connected to the cathode exhaust port; the third control valve 71 is arranged on the main pipeline 73 to regulate the flow rate of the main pipeline 73; the two ends of the main pipeline 74 are respectively connected to the main pipeline 73 and the second inlet; the third one-way valve 72 is arranged on the main pipeline 74. This segmented control method is convenient for more flexible response to gas emission requirements under different working conditions, and improves the adaptability and processing efficiency of the system. During the operation of the battery module 1, this flexibility is crucial to maintaining system stability and improving energy utilization efficiency, especially in occasions where electricity demand fluctuates greatly, such as data centers, electric vehicle charging stations, etc., and can effectively respond to instantaneous high-load emissions.

[0033] Further, in order to facilitate the regulation of the flow rate to the main pipeline 74, the tail exhaust treatment system also includes a bypass pipeline 75 and a bypass valve 76, and the two ends of the bypass pipeline 75 are respectively connected to the main pipeline 73 and the tail exhaust structure 8; the bypass valve 76 is arranged on the bypass pipeline 75, so as to regulate the flow rate of the bypass pipeline 75 by controlling the bypass valve 76, so as to regulate the flow rate of the main pipeline 73 to the main pipeline 74. The flow rate of the air flowing into the reaction structure 2 is adjusted by opening the bypass valve 76 or adjusting the opening of the bypass valve 76 as needed. By setting the bypass pipeline 75 and the bypass valve 76, a means of emergency discharge or flow regulation is provided to ensure the safety and reliability of the system under abnormal conditions. During the operation of the battery module 1, this emergency discharge mechanism plays an important role in preventing system overload and protecting the environment, especially in extreme weather or sudden failure, and can effectively avoid the large-scale discharge of harmful gases.

[0034] Optionally, the bypass valve 76 is a solenoid valve disposed on the bypass pipeline 75 ; or the bypass valve 76 is a three-way valve connected to the main pipeline 73 , the main pipeline 74 and the bypass pipeline 75 respectively.

[0035] In addition, in order to discharge the exhaustable material and the excess air in the bypass line 75, the absorption structure 3 has a material discharge port for discharging the exhaustable material, and the tail discharge processing system also includes a tail discharge structure 8, which is connected to the material discharge port to deliver the exhaustable material discharged from the absorption structure 3 to the tail discharge structure 8; the tail discharge structure 8 is connected to the anode discharge port to deliver at least part of the first gas discharged from the anode discharge port to the tail discharge structure. Through the provision of the tail discharge structure 8, the uniform discharge of the treated exhaustable material is achieved, the system structure is simplified, and the operating cost is reduced. In the tail discharge processing of the battery module 1, this unified discharge method is of great significance for realizing the standardization and automation of tail discharge processing, especially in large-scale battery energy storage systems, fuel cell power plants and other occasions, and can effectively improve the efficiency and economy of tail discharge processing.

[0036] Optionally, the tail row structure 8 is a tail row pipe or a mixer.

[0037] Optionally, a ball mill and a catalyst are provided in the reaction structure 2 to improve the synthesis efficiency of the gas to be treated, so that hydrogen and nitrogen can be efficiently synthesized into ammonia in an environment near normal temperature and pressure through the ball mill and the catalyst in the reaction structure 2, which is beneficial to reducing the hydrogen concentration of the tail exhaust.

[0038] Preferably, the catalyst is an iron-based catalyst. In a specific application, a ball mill is provided in the reaction structure 2, and cheap iron powder is used as a catalyst. High-density defects are introduced into the catalyst through mechanical force, and a violent effect is generated in the catalyst, so that hydrogen and nitrogen can react to synthesize ammonia at a condition as low as 45°C and 1 bar. Unlike traditional ammonia synthesis that requires large-scale centralized reactors, this method allows on-site production and is flexible in scale.

[0039] Optionally, the tail exhaust treatment system also includes a hydrogen concentration detection structure, which is arranged between the cathode exhaust port and the first inlet to detect the concentration of the second gas input into the reaction structure 2. In actual operation, the action of the bypass valve 76 can be controlled according to the feedback of the hydrogen concentration sensor to adjust the flow rate of the tail exhaust air discharged into the reaction structure 2, so that the hydrogen concentration in the reaction structure 2 can be controlled to promote the complete reaction of hydrogen. This design not only reduces the emission of harmful gases and improves the stability of the system operation, but also reduces the energy consumption of tail exhaust treatment, and has a significant contribution to environmental protection and energy conservation and emission reduction. During the operation of the battery module 1, this efficient reaction mechanism and safety detection mechanism are of great significance for improving energy utilization efficiency and protecting the environment, especially in hydrogen energy vehicles, hydrogen fuel cell power stations and other occasions, which can effectively deal with high-concentration hydrogen emissions and ensure safe and stable operation of the system.

[0040] Optionally, the gas inlet is arranged at the top of the absorption structure 3 to prevent water from flowing back into the reaction structure 2, thereby avoiding affecting the catalytic reaction in the reaction structure 2; the liquid inlet is arranged at the bottom of the absorption structure 3 to form a liquid seal to prevent ammonia from flowing back into the battery module 1 through the drainage pipeline 6 and the gas-liquid separation structure 4, thereby affecting the activity of the catalyst platinum on the membrane electrode, thereby protecting the reliability and durability of the hydrogen fuel cell module 1; a plurality of branch pipes are arranged at the gas inlet to divert the ammonia input into the absorption structure 3, thereby allowing the ammonia to fully contact the liquid and promote full absorption of the ammonia.

[0041] Optionally, the absorption structure 3 is made of transparent material, and the outer surface of the absorption structure 3 is provided with a maximum liquid level line and a minimum liquid level line. The maximum liquid level line is lower than the gas inlet to prevent the liquid level from being too high and water from entering the reaction structure 2 through the gas inlet, thereby avoiding affecting the catalytic reaction in the reaction structure 2; the minimum liquid level line is higher than the liquid inlet to ensure that the minimum liquid level is higher than the liquid inlet to form a liquid seal and prevent ammonia from overflowing through the drainage pipeline 6.

[0042] Optionally, a liquid level sensor is provided in the absorption structure 3 to detect the liquid level in the absorption structure 3 to ensure that the solution in the absorption structure 3 is lower than the outlet of the absorption structure 3, thereby preventing the solution from overflowing from the absorption structure 3 and overflowing to the external environment through the tail discharge structure 8 to cause environmental pollution.

[0043] Generally, a drain port is provided at the bottom of the absorption structure 3 to discharge excess liquid in the absorption structure 3. Generally, the drain port is sealed with a screw cap, which can be loosened to discharge excess liquid water in the absorption structure 3 when necessary. By rationally arranging the specific structure of the absorption structure 3 and setting a liquid level control and monitoring device, the system can effectively avoid liquid overflow and gas dissolution, and ensure the efficiency and safety of the absorption process. In the tail discharge treatment of the battery module 1, this liquid level control and monitoring mechanism is of great significance for realizing the automation and intelligence of the tail discharge treatment, especially in remote monitoring and unmanned occasions, which can effectively improve the operating efficiency and safety of the system.

[0044] In practical applications, the reaction structure 2 and the absorption structure 3 can be set as an integrated structure to improve the system integration, or they can be set as a split structure to facilitate flexible arrangement according to the structural design of the fuel cell module 1.

[0045] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0046] The present invention provides a tail exhaust treatment system, which includes a battery module 1, a reaction structure 2 and an absorption structure 3. The battery module 1 has a cathode exhaust port and an anode exhaust port; the reaction structure 2 has a first inlet and a second inlet, the first inlet is connected to the cathode exhaust port, and the second inlet is connected to the anode exhaust port; the absorption structure 3 has a gas inlet and a liquid inlet, the gas inlet is connected to the outlet of the reaction structure, and the liquid inlet is connected to the anode exhaust port. The cathode outlet of the battery module 1 is used to discharge the first gas, and the anode outlet is used to discharge the second gas and liquid; the first gas discharged from the cathode outlet and the second gas discharged from the anode outlet are respectively input into the reaction structure 2 through the first inlet and the second inlet to react and generate the gas to be treated; the gas to be treated discharged from the outlet of the reaction structure 2 and the liquid discharged from the anode outlet are respectively input into the absorption structure 3 through the gas inlet and the liquid inlet to absorb and produce the dischargeable material, so that the hydrogen discharged from the battery module 1 and the nitrogen in the air are first generated in the reaction structure, and then the ammonia and water are generated in the absorption structure. Monohydrate ammonia is convenient for tail discharge treatment, which is beneficial to reduce the ammonia content and liquid water in the tail discharge, and can heat the monohydrate ammonia to produce ammonia when needed. At the same time, ammonia, as a colorless gas with a pungent odor, can be used as a warning of excessive emissions, improve the safety and reliability of the tail discharge treatment system, and thus solve the problem of hydrogen accumulation and environmental liquid accumulation in the closed scene of the hydrogen fuel cell engine in the prior art.

[0047] The tail exhaust treatment system provided by the present invention effectively improves the efficiency and environmental friendliness of tail exhaust treatment by reacting the first gas and the second gas discharged from the battery module 1 in the reaction structure 2, and then absorbing and treating them through the absorption structure 3. The setting of the ball mill and the catalyst in the reaction structure 2 further enhances the rate and completeness of the gas reaction, and the addition of the hydrogen concentration detection structure ensures the safety and controllability of the reaction process. This design not only reduces the emission of harmful gases and improves the stability of the system operation, but also reduces the energy consumption of tail exhaust treatment, making a significant contribution to environmental protection and energy conservation and emission reduction.

[0048] The tail exhaust treatment system provided by the present invention realizes efficient, safe and environmentally friendly treatment of battery module tail exhaust through its unique structural design and functional configuration, has significant practical effect improvement and application benefits, and is an important innovation in the field of battery tail exhaust treatment.

[0049] In summary, the tail exhaust treatment system of the present application realizes efficient, safe and environmentally friendly treatment of the tail exhaust of the battery module 1 through its unique structural design and functional configuration. It not only has a wide range of application potentials in various fields such as industry, transportation, and energy conversion, but also has a positive role in promoting green manufacturing, intelligent energy management, and the development of the hydrogen energy industry. The system not only improves energy utilization efficiency and reduces environmental pollution, but also promotes the innovation and development of related technologies, demonstrating its important value and broad prospects in modern energy systems.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tail exhaust treatment system, characterized in that: include: A battery module (1) having a cathode discharge port and an anode discharge port, wherein the cathode discharge port is used to discharge a first gas, and the anode discharge port is used to discharge a second gas and a liquid; A reaction structure (2) having a first inlet and a second inlet, wherein the first inlet is connected to the cathode outlet, and the second inlet is connected to the anode outlet, so as to input the first gas and the second gas into the reaction structure (2) for reaction and generate a gas to be treated; The absorption structure (3) has a gas inlet and a liquid inlet, wherein the gas inlet is connected to the outlet of the reaction structure (2), and the liquid inlet is connected to the anode outlet, so that the gas to be treated and the liquid are input into the absorption structure (3) for absorption and generation of dischargeable material.

2. The tail exhaust treatment system according to claim 1, characterized in that: The tail exhaust treatment system also includes: A gas-liquid separation structure (4) has a separation inlet, a gas outlet and a liquid outlet, wherein the separation inlet is connected to the anode discharge port, the gas outlet is connected to the first inlet, and the liquid outlet is connected to the liquid inlet, so as to separate the second gas and the liquid discharged from the anode discharge port.

3. The tail exhaust treatment system according to claim 2, characterized in that: The tail exhaust treatment system also includes: an exhaust pipeline (5), the two ends of which are respectively connected to the gas outlet and the first inlet, so as to transport the second gas separated by the gas-liquid separation structure (4) to the reaction structure (2); a first control valve (51) disposed on the exhaust pipeline (5), wherein the first control valve (51) is adjustable so as to adjust the flow rate of the exhaust pipeline (5) by adjusting the first control valve (51); A first one-way valve (52) is arranged on the exhaust pipeline (5) so as to allow the material transported by the exhaust pipeline (5) to be transported to the reaction structure (2) in a one-way manner.

4. The tail exhaust treatment system according to claim 2, characterized in that: The tail exhaust treatment system also includes: a liquid discharge pipeline (6), the two ends of which are respectively connected to the liquid outlet and the liquid inlet, so as to transport the liquid separated by the gas-liquid separation structure (4) to the absorption structure (3); a second control valve (61) disposed on the liquid discharge pipeline (6), wherein the second control valve (61) is adjustable so as to adjust the flow rate of the liquid discharge pipeline (6) by adjusting the second control valve (61); A second one-way valve (62) is arranged on the liquid discharge pipeline (6) so as to allow the material transported by the liquid discharge pipeline (6) to be transported to the absorption structure (3) in a one-way manner.

5. The tail exhaust treatment system according to claim 1, characterized in that: The tail exhaust treatment system also includes: an exhaust pipeline (7), the two ends of which are respectively connected to the cathode exhaust port and the second inlet, so as to transport the first gas exhausted from the cathode exhaust port to the reaction structure (2); A third control valve (71) is arranged on the exhaust pipeline (7), and the third control valve (71) is adjustable so as to adjust the flow rate of the exhaust pipeline (7) by adjusting the third control valve (71); A third one-way valve (72) is arranged on the exhaust pipeline (7) so as to allow the material transported by the exhaust pipeline (7) to be transported to the reaction structure (2) in a one-way manner.

6. The tail exhaust treatment system according to claim 5, characterized in that: The emptying pipeline (7) comprises: A main pipeline (73) is connected to the cathode discharge port; the third control valve (71) is arranged on the main pipeline (73) to adjust the flow of the main pipeline (73); A main pipeline (74), the two ends of which are respectively connected to the main pipeline (73) and the second inlet; the third one-way valve (72) is arranged on the main pipeline (74).

7. The tail exhaust treatment system according to claim 6, characterized in that: The tail exhaust treatment system also includes: A bypass pipeline (75), wherein two ends of the bypass pipeline (75) are respectively connected to the main pipeline (73) and the tail exhaust structure (8); A bypass valve (76) is arranged on the bypass pipeline (75) to regulate the flow of the bypass pipeline (75) by controlling the bypass valve (76) so as to regulate the flow of the main pipeline (73) to the main pipeline (74).

8. The tail exhaust treatment system according to claim 1, characterized in that: The absorption structure (3) has a material discharge port for discharging the dischargeable material, and the tail discharge treatment system further comprises: A tail discharge structure (8) is connected to the material discharge port so as to transfer the dischargeable material discharged from the absorption structure (3) to the tail discharge structure (8); the tail discharge structure (8) is connected to the anode discharge port so as to transfer at least part of the first gas discharged from the anode discharge port to the tail discharge structure.

9. The tail exhaust treatment system according to any one of claims 1 to 8, characterized in that: The reaction structure (2) is provided with a ball mill and a catalyst to improve the synthesis efficiency of the gas to be treated; and / or The tail exhaust treatment system further comprises a hydrogen concentration detection structure, which is arranged between the cathode exhaust port and the first inlet to detect the concentration of the second gas input into the reaction structure (2).

10. The tail exhaust treatment system according to any one of claims 1 to 8, characterized in that: The gas inlet is arranged at the top of the absorption structure (3), and the liquid inlet is arranged at the bottom of the absorption structure (3); and / or The absorption structure (3) is provided with a maximum liquid level line and a minimum liquid level line, the maximum liquid level line is lower than the gas inlet, and the minimum liquid level line is higher than the liquid inlet; and / or A liquid level sensor is provided in the absorption structure (3) to detect the liquid level in the absorption structure (3); and / or The bottom of the absorbent structure (3) is provided with a liquid discharge port to discharge excess liquid in the absorbent structure (3).

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