A zero-emission fuel power generation system

Abstract

The present invention relates to a zero-emission fuel power generation system, which includes a power generation unit, an auxiliary tank and a plurality of fuel tanks; the power generation unit is provided with a feed inlet and an exhaust port; each fuel tank is connected with a feed pipeline and a tail gas branch pipe, the feed pipeline is connected to the feed inlet and is provided with a feed control valve, the feed control valve is closed when the fuel in the corresponding fuel tank is exhausted, the tail gas branch pipe is connected to the exhaust port and is provided with a tail gas control valve, the tail gas control valve is closed when there is fuel stored in the corresponding fuel tank and is opened when the fuel in the corresponding fuel tank is exhausted, and the plurality of fuel tanks convey fuel one by one; the auxiliary tank is connected with an auxiliary pipeline, the auxiliary pipeline is connected to the exhaust port and is provided with an auxiliary control valve thereon, and the auxiliary control valve is opened when the first fuel tank conveys fuel. This solution greatly saves the internal space of the cabin, can be used to carry more fuel, and improves the endurance; at the same time, it keeps the mass in the fuel tank relatively balanced, simplifies the in-cabin center-of-gravity adjustment system, and improves the reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust gas treatment for underwater equipment, and particularly to a zero-emission fuel power generation system. Background Art

[0002] Underwater equipment needs to perform tasks such as detection, cruising, and monitoring underwater for a long time, and has high requirements for endurance, diving depth, and stealth performance. Due to different operation contents, underwater equipment has multiple diving depth working conditions. According to the change of working diving depth, a set of complex center of gravity adjustment equipment is required to adjust the mass of ballast water. By adjusting the water storage volume of each water tank, the center of gravity balance of the underwater equipment is maintained to prevent the underwater equipment from pitching or rolling due to reasons such as fuel consumption. The water volume in the tank is adjusted by the seawater inlet and discharge pipelines, and external seawater needs to be introduced or the excess seawater needs to be discharged out of the boat, which poses a major challenge to the reliability of the device under the high-pressure conditions of large diving depths. In addition, underwater equipment using hydrocarbon fuels usually generates exhaust gas mainly composed of carbon dioxide and containing a small amount of oxygen. This exhaust gas is usually discharged into the seawater by measures such as pressurized discharge and dissolution in seawater, which is extremely easy to generate thermal signals and chemical signals and is easy to be identified and detected.

[0003] With the continuous upgrading of the demand for marine equipment, the demand for long endurance, high stealth, and large diving depth of underwater equipment is also continuously increasing. The power generation efficiency of solid oxide fuel cells (SOFC) is 50-70%, which is much higher than that of traditional internal combustion engines or energy storage batteries. Therefore, underwater equipment powered by solid oxide fuel cells can reduce emissions by 50-100%. The relatively low exhaust gas volume greatly facilitates exhaust gas treatment. By pressurizing and liquefying and storing the exhaust gas containing a large amount of carbon dioxide, not only the stealth performance of the underwater equipment is greatly improved, but also the auxiliary machine power consumption required for pressurized direct discharge or dissolution under the working conditions of large diving depths is avoided.

[0004] For example, Patent CN 109838684 A discloses an underwater vehicle exhaust gas utilization and storage device and method, including a liquefied natural gas / liquid hydrogen storage tank pump, a liquid oxygen storage tank, a carbon dioxide storage tank, a hot gas engine, etc., enabling the exhaust gas to be liquefied and enter the newly added carbon dioxide storage tank to achieve zero exhaust gas emission.

[0005] However, with the development of underwater equipment, the exhaust gas treatment methods involved in the above patents cannot meet the requirements of the internal weight of the boat. At the same time, the carried exhaust gas storage tank greatly occupies the internal space of the boat, reducing the volume energy density of the power generation system and unable to meet the equipment use requirements of future underwater equipment for long endurance, large diving depth, and high reliability. Summary of the Invention

[0006] In view of this, it is necessary to provide a zero-emission fuel power generation system to solve the technical problems in the prior art that the exhaust gas treatment method of underwater equipment cannot meet the weight counterweight requirements in the submarine, and at the same time, the carried exhaust gas storage tank occupies the space in the submarine, reducing the volume energy density of the power generation system and unable to meet the equipment usage requirements of long endurance, large diving depth and high reliability for future underwater equipment.

[0007] The present invention provides a zero-emission fuel power generation system, which includes:

[0008] A power generation unit for converting the chemical energy of fuel into electrical energy, and having a feed inlet for introducing fuel and an exhaust port for discharging exhaust gas;

[0009] A plurality of fuel tanks, each fuel tank is connected with a feed pipeline and an exhaust gas branch pipe. The feed pipeline is connected to the feed inlet and is provided with a feed control valve thereon. The feed control valve closes when the fuel in the corresponding fuel tank is exhausted. The exhaust gas branch pipe is connected to the exhaust port and is provided with an exhaust gas control valve thereon. The exhaust gas control valve closes when there is fuel stored in the corresponding fuel tank and conducts when the fuel in the corresponding fuel tank is exhausted. Among them, the plurality of fuel tanks transport fuel one by one; and,

[0010] An auxiliary tank is connected with an auxiliary pipeline. The auxiliary pipeline is connected to the exhaust port and is provided with an auxiliary control valve thereon. The auxiliary control valve conducts when the first fuel tank transports fuel.

[0011] Optionally, the power generation unit is further provided with a water supply pipeline for introducing water flow;

[0012] The zero-emission fuel power generation system further includes an exhaust gas main pipe, a water tank and a primary cooler. The exhaust gas main pipe includes an inlet exhaust gas section connected to the exhaust port and an outlet exhaust gas section connected to the auxiliary pipeline and each exhaust gas branch pipe. The water tank is provided with a water delivery pipeline. The water delivery pipeline, the cold side pipeline of the primary cooler and the water supply pipeline are connected in sequence, and the inlet exhaust gas section, the hot side pipeline of the primary cooler and the outlet exhaust gas section are connected in sequence.

[0013] Optionally, a booster pump and an exhaust gas buffer tank are sequentially arranged on the outlet exhaust gas section along the exhaust direction.

[0014] Optionally, the power generation unit is further provided with an oxidant supply pipeline for introducing oxidant;

[0015] The zero-emission fuel power generation system further includes an oxidant storage tank and a secondary cooler. The oxidant storage tank is connected with a feed pipeline. The feed pipeline, the cold side pipeline of the secondary cooler and the oxidant supply pipeline are connected in sequence;

[0016] The exhaust gas section includes a pressurization section connected to the hot-side pipeline of the primary cooler and an accessory section connected to the auxiliary pipeline and each of the exhaust gas branch pipes. The booster pump and the exhaust gas buffer tank are arranged in the pressurization section, and the pressurization section, the hot-side pipeline of the secondary cooler, and the accessory section are connected in sequence.

[0017] Optionally, the zero-emission fuel power generation system further includes a gas-liquid separator and a recovery buffer tank. The gas-phase outlet of the gas-liquid separator is connected to the recovery buffer tank.

[0018] The accessory section includes a mixing section connected to the hot-side pipeline of the secondary cooler and a liquid-phase section connected to the auxiliary pipeline and each of the exhaust gas branch pipes. Among them, the mixing section is connected to the inlet of the gas-liquid separator, and the liquid-phase section is connected to the liquid-phase outlet of the gas-liquid separation.

[0019] Optionally, the zero-emission fuel power generation system further includes a pressure transmitter for monitoring the pressure in the exhaust gas buffer tank pipeline.

[0020] Optionally, the water tank is further provided with a water recovery pipeline connected to the hot-side pipeline of the primary cooler for recovering the liquefied water vapor in the hot-side pipeline of the primary cooler.

[0021] Optionally, the zero-emission fuel power generation system further includes a fuel buffer tank connected to each of the feeding pipelines, and the fuel buffer tank is connected to the feeding port.

[0022] Optionally, each of the fuel tanks is further provided with a self-evaporation relief pipeline connected to the fuel buffer tank.

[0023] Optionally, the power generation unit includes a solid oxide fuel cell power generation module.

[0024] Compared with the prior art, for the zero-emission fuel power generation system provided by the present invention, when starting power generation, the feed control valve corresponding to the first fuel tank for delivering fuel is opened, and the exhaust gas control valve is closed. At the same time, the feed control valves and exhaust gas control valves corresponding to other fuel tanks are closed, and the auxiliary control valve of the auxiliary tank is opened. In this way, the exhaust gas discharged after the fuel delivered by the first fuel tank is converted by the power generation unit can enter the auxiliary tank for storage through the auxiliary pipeline. As the fuel in the first fuel tank is consumed, its corresponding feed control valve is closed, and the exhaust gas control valve is opened, so that the exhaust gas generated by the power generation unit can enter the first fuel tank for storage. At the same time, the feed control valve corresponding to the second fuel tank is opened, and the exhaust gas valve is closed to continue delivering fuel to the power generation unit. When the fuel in the second fuel tank is consumed, the exhaust gas generated by the power generation unit can enter the second fuel tank for storage, and so on. The fuel in the fuel tank is gradually consumed as the underwater equipment operates, and the exhaust gas is stored accordingly.

[0025] Therefore, this solution can use the fuel tank as a storage tank for exhaust gas recovery without the need to additionally match a relatively large-volume exhaust gas storage tank, greatly saving the internal space of the cabin, and can be used to carry more fuel to improve the endurance. At the same time, the exhaust gas entering the fuel tank can be controlled in time sequence through the control valve group, so as to orderly introduce the exhaust gas generated by the power generation unit into the empty fuel tank with the fuel consumed, alleviating the phenomenon of the center of gravity shift of multiple cabins caused by the fuel consumption in the fuel tank and the exhaust gas transfer or discharge during the navigation of traditional underwater equipment, maintaining the relative balance of the mass in the fuel tank, and simplifying the in-cabin center of gravity adjustment system. The setting of the auxiliary tank ensures that the exhaust gas before the start-up condition to the rated condition can be recovered, improving the reliability.

[0026] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it according to the content of the specification, the preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. The specific implementation manners of the present invention are given in detail by the following embodiments and their accompanying drawings. Description of the Drawings

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0028] Figure 1 It is a schematic structural diagram of an embodiment of the zero-emission fuel power generation system provided by the present invention.

[0029] Description of the Reference Numerals:

[0030] 100 - Zero - emission fuel power generation system, 1 - Power generation unit, 11 - Water supply pipeline, 12 - Oxidant supply pipeline, 2 - Fuel tank, 21 - Feeding pipeline, 211 - Feeding control valve, 22 - Tail gas branch pipe, 221 - Tail gas control valve, 23 - Fuel buffer tank, 24 - Self - evaporation discharge pipeline, 3 - Auxiliary tank, 31 - Auxiliary pipeline, 311 - Auxiliary control valve, 4 - Tail gas main pipe, 41 - Inlet tail gas section, 42 - Outlet tail gas section, 421 - Boosting section, 422 - Auxiliary section, 4221 - Mixing section, 4222 - Liquid phase section, 5 - Water tank, 51 - Water delivery pipeline, 52 - Water recovery pipeline, 53 - Primary cooler, 6 - Booster pump, 61 - Tail gas buffer tank, 611 - Pressure transmitter, 7 - Oxidant storage tank, 71 - Feeding pipeline, 8 - Secondary cooler, 9 - Gas - liquid separator, 91 - Recovery buffer tank. Detailed implementation manners

[0031] The preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0032] Please refer to Figure 1 , this zero - emission fuel power generation system 100 includes a power generation unit 1, an auxiliary tank 3 and a plurality of fuel tanks 2; the power generation unit 1 is used to convert the chemical energy of the fuel into electrical energy, and it is provided with a feeding port for introducing fuel and an exhaust port for discharging tail gas; each fuel tank 2 is connected with a feeding pipeline 21 and a tail gas branch pipe 22. The feeding pipeline 21 is connected to the feeding port and is provided with a feeding control valve 211 thereon. The feeding control valve 211 closes when the fuel in the corresponding fuel tank 2 is exhausted. The tail gas branch pipe 22 is connected to the exhaust port and is provided with a tail gas control valve 221 thereon. The tail gas control valve 221 closes when there is fuel stored in the corresponding fuel tank 2 and conducts when the fuel in the corresponding fuel tank 2 is exhausted. Among them, the plurality of fuel tanks 2 deliver fuel one by one; the auxiliary tank 3 is connected with an auxiliary pipeline 31. The auxiliary pipeline 31 is connected to the exhaust port and is provided with an auxiliary control valve 311 thereon. The auxiliary control valve 311 conducts when the first fuel tank 2 delivers fuel.

[0033] The zero-emission fuel power generation system 100 provided by the present invention, when starting power generation, conducts the feed control valve 211 corresponding to the first fuel tank 2 for delivering fuel and closes the tail gas control valve 221. At the same time, closes the feed control valves 211 and tail gas control valves 221 corresponding to other fuel tanks 2, and conducts the auxiliary control valve 311 of the auxiliary tank 3. In this way, the tail gas discharged after the fuel delivered by the first fuel tank 2 is converted by the power generation unit 1 can enter the auxiliary tank 3 through the auxiliary pipeline 31 for storage. As the fuel in the first fuel tank 2 is consumed, its corresponding feed control valve 211 is closed and the tail gas control valve 221 is conducted, so that the tail gas generated by the power generation unit 1 can enter the first fuel tank 2 for storage. At the same time, the feed control valve 211 corresponding to the second fuel tank 2 is conducted and the tail gas valve is closed to continue delivering fuel to the power generation unit 1. When the fuel in the second fuel tank 2 is consumed, the tail gas generated by the power generation unit 1 can enter the second fuel tank 2 for storage, and so on. The fuel in the fuel tank 2 is gradually consumed as the underwater equipment operates, and the tail gas is stored correspondingly.

[0034] Therefore, this solution can use the fuel tank 2 as a storage tank for tail gas recovery without the need to additionally match a relatively large-volume tail gas storage tank, greatly saving the internal space of the cabin, enabling more fuel to be carried, and improving the endurance. At the same time, it can control the timing of the tail gas entering the fuel tank 2 through the control valve group to orderly introduce the tail gas generated by the power generation unit 1 into the empty fuel tank 2 with the fuel consumed, alleviating the phenomenon of the center of gravity shift of multiple cabins caused by the fuel consumption in the fuel tank 2 and the tail gas transfer or discharge during the navigation of traditional underwater equipment, maintaining the relative balance of the mass in the fuel tank, and simplifying the in-cabin center of gravity adjustment system. The setting of the auxiliary tank 3 ensures that the tail gas before the start-up condition to the rated condition can be recovered, improving the reliability.

[0035] It should be noted that in this embodiment, the power generation unit 1 includes a solid oxide fuel cell (SOFC) power generation module to use the solid oxide fuel cell as the power source of the underwater equipment. It has a high power generation rate, less tail gas discharged, and is easy to carry out tail gas treatment, reducing the auxiliary machine power consumption required for tail gas treatment. In addition, in this embodiment, there are four fuel tanks 2.

[0036] Furthermore, the power generation unit 1 is also provided with a water supply pipeline 11 for introducing water flow. The zero-emission fuel power generation system 100 further includes a tail gas main pipe 4, a water tank 5, and a primary cooler 53. The tail gas main pipe 4 includes a tail gas section 41 connected to the exhaust port and an exhaust tail gas section 42 connected to the auxiliary pipeline 31 and each tail gas branch pipe 22. The water tank 5 is provided with a water delivery pipeline 51, and the water delivery pipeline 51, the cold-side pipeline of the primary cooler 53, and the water supply pipeline 11 are connected in sequence, and the intake tail gas section 41, the hot-side pipeline of the primary cooler 53, and the exhaust tail gas section 42 are connected in sequence.

[0037] In this embodiment, water is required for the power generation unit 1 to perform energy conversion. The normal temperature water flowing through the cold side pipeline of the primary cooler 53 can exchange heat with the tail gas flowing through the hot side pipeline of the primary cooler 53. This not only fully preheats the normal temperature water in the water tank 5 and then enters the power generation unit 1, improving the comprehensive energy utilization rate of the power generation unit 1, but also enables the water vapor in the tail gas to be fully condensed and liquefied. Specifically, the water tank 5 is also provided with a water recovery pipeline 52, and the water recovery pipeline 52 is connected to the hot side pipeline of the primary cooler 53 to recover the liquefied water vapor in the hot side pipeline of the primary cooler 53. In this way, while realizing water recovery, the normal temperature water in the water tank 5 is used to preliminarily cool the tail gas, saving the refrigeration power consumption required for liquefying the tail gas, making the underwater equipment emission-free and improving the stealth performance.

[0038] In addition, it should be understood that the feed pipeline 21 is used to direct the fuel in the fuel tank 2 to the power generation unit 1, and the main tail gas pipeline 4 cooperates with the auxiliary pipeline 31 and the tail gas branch pipes 22 to direct the tail gas discharged from the power generation unit 1 to the auxiliary tank 3 and the fuel tank 2 with exhausted fuel.

[0039] Furthermore, in this embodiment, a booster pump 6 and a tail gas buffer tank 61 are sequentially provided on the tail gas outlet section 42 along the exhaust direction. The booster pump 6 and the tail gas buffer tank 61 cooperate to stably pressurize the tail gas, increasing its liquefaction temperature and reducing the temperature difference between the tail gas liquefaction temperature and the ambient temperature. This can effectively reduce the thickness of the insulation layer of the storage tank, saving volume and weight. Specifically, the zero-emission fuel power generation system 100 further includes a pressure transmitter 611, and the pressure transmitter 611 is used to monitor the pressure in the pipeline of the tail gas buffer tank 61 to be able to adjust the operation of the booster pump 6 in real time. It should be understood that the tail gas buffer tank 61 can be provided with a valve group for controlling the output tail gas volume.

[0040] Further, the power generation unit 1 is also provided with an oxidant supply pipeline 12 for introducing an oxidant; the zero-emission fuel power generation system 100 further includes an oxidant storage tank 7 and a secondary cooler 8. The oxidant storage tank 7 is connected with a feeding pipeline 71, and the feeding pipeline 71, the cold side pipeline of the secondary cooler 8, and the oxidant supply pipeline 12 are sequentially connected; the tail gas outlet section 42 includes a pressurization section 421 connected to the hot side pipeline of the primary cooler 53 and an accessory section 422 connected to the auxiliary pipeline 31 and each tail gas branch pipe 22. The booster pump 6 and the tail gas buffer tank 61 are arranged in the pressurization section 421, and the pressurization section 421, the hot side pipeline of the secondary cooler 8, and the accessory section 422 are sequentially connected.

[0041] That is, in this embodiment, the oxidant flowing through the cold-side pipeline of the secondary cooler 8 can be heat-exchanged with the tail gas flowing through the hot-side pipeline of the secondary cooler 8 to cool the high-temperature tail gas in two stages. At the same time, the oxidant can absorb the temperature of the tail gas to improve the conversion efficiency of the power generation unit 1. Specifically, in this solution, the oxidant is liquid oxygen, and the liquid oxygen enters the power generation unit 1 after absorbing heat and vaporizing. It should be noted that a valve group for controlling its opening and closing is provided on the feed pipeline 71.

[0042] Furthermore, the zero-emission fuel power generation system 100 further includes a gas-liquid separator 9 and a recovery buffer tank 91. The gas-phase outlet of the gas-liquid separator 9 is communicated with the recovery buffer tank 91. The accessory section 422 includes a mixing section 4221 communicated with the hot-side pipeline of the secondary cooler 8 and a liquid-phase section 4222 communicated with the auxiliary pipeline 31 and each tail gas branch pipe 22. Among them, the mixing section 4221 is communicated with the inlet of the gas-liquid separator 9, and the liquid-phase section 4222 is communicated with the liquid-phase outlet of the gas-liquid separation. In this embodiment, part or all of the liquefied tail gas enters the gas-liquid separator 9, wherein the gas phase is stored in the recovery buffer tank 91, and the liquid phase flows into the fuel tank 2 and the auxiliary tank 3 through the liquid-phase section 4222 for storage.

[0043] Further, the zero-emission fuel power generation system 100 further includes a fuel buffer tank 23 communicated with each feed pipeline 21. The fuel buffer tank 23 is communicated with the inlet to enable the fuel in the fuel tank 2 to flow smoothly to the power generation unit 1, so that the energy conversion of the power generation unit 1 tends to be stable. At the same time, each fuel tank 2 is also provided with a self-evaporation discharge pipeline 24. The self-evaporation discharge pipeline 24 is communicated with the fuel buffer tank 23 to make full use of the partially vaporized fuel in the fuel tank 2 and improve the fuel utilization rate. It should be understood that a valve group for controlling its opening and closing is provided on the self-evaporation discharge pipeline 24. In addition, the auxiliary tank 3 and each fuel tank 2 are provided with a heat preservation structure to prevent the liquefied tail gas from exchanging heat with the cabin environment and re-vaporizing.

[0044] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A zero-emission fuel power generation system, characterized in that, It includes: A power generation unit for converting the chemical energy of fuel into electrical energy, and it is provided with a feed inlet for introducing fuel and an exhaust port for discharging exhaust gas; A plurality of fuel tanks, each of the fuel tanks is connected with a feed pipeline and an exhaust gas branch pipe. The feed pipeline is connected to the feed inlet and is provided with a feed control valve thereon. The feed control valve closes when the fuel in the corresponding fuel tank is exhausted. The exhaust gas branch pipe is connected to the exhaust port and is provided with an exhaust gas control valve thereon. The exhaust gas control valve closes when there is fuel stored in the corresponding fuel tank and conducts when the fuel in the corresponding fuel tank is exhausted. Among them, the plurality of fuel tanks transport fuel one by one; and, An auxiliary tank is connected with an auxiliary pipeline. The auxiliary pipeline is connected to the exhaust port and is provided with an auxiliary control valve thereon, and is arranged in parallel with the exhaust gas branch pipe. The auxiliary control valve conducts when the first fuel tank transports fuel, and is used for guiding the exhaust gas generated by the power generation unit into the auxiliary tank through the exhaust port and the auxiliary pipeline; Among them, as the fuel in the first fuel tank is consumed, the corresponding feed control valve closes and the exhaust gas control valve conducts, so that the exhaust gas generated by the power generation unit can enter the first fuel tank for storage. At the same time, the feed control valve corresponding to the second fuel tank conducts and the exhaust gas control valve closes to continue to supply fuel to the power generation unit; And when the fuel in the second fuel tank is consumed, the exhaust gas generated by the power generation unit can enter the second fuel tank for storage, and so on. The fuel in the fuel tank is gradually consumed and the exhaust gas is stored correspondingly.

2. The zero-emission fuel power generation system according to claim 1, wherein The power generation unit is also provided with a water supply pipeline for introducing water flow; The zero-emission fuel power generation system further includes an exhaust gas main pipe, a water tank and a primary cooler. The exhaust gas main pipe includes an inlet exhaust gas section connected to the exhaust port and an outlet exhaust gas section connected to the auxiliary pipeline and each exhaust gas branch pipe. The water tank is provided with a water delivery pipeline. The water delivery pipeline, the cold-side pipeline of the primary cooler and the water supply pipeline are connected in sequence, and the inlet exhaust gas section, the hot-side pipeline of the primary cooler and the outlet exhaust gas section are connected in sequence.

3. The zero-emission fuel power generation system according to claim 2, wherein A booster pump and an exhaust gas buffer tank are sequentially arranged on the outlet exhaust gas section along the exhaust gas direction.

4. The zero-emission fuel power generation system according to claim 3, wherein The power generation unit is also provided with an oxidant supply pipeline for introducing an oxidant; The zero-emission fuel power generation system further includes an oxidant storage tank and a secondary cooler. The oxidant storage tank is connected with a feed pipeline. The feed pipeline, the cold-side pipeline of the secondary cooler and the oxidant supply pipeline are connected in sequence; The outlet exhaust gas section includes a boosting section connected to the hot-side pipeline of the primary cooler and an accessory section connected to the auxiliary pipeline and each exhaust gas branch pipe. The booster pump and the exhaust gas buffer tank are arranged in the boosting section, and the boosting section, the hot-side pipeline of the secondary cooler and the accessory section are connected in sequence.

5. The zero-emission fuel power generation system according to claim 4, characterized in that, The zero-emission fuel power generation system further includes a gas-liquid separator and a recovery buffer tank. The gas-phase outlet of the gas-liquid separator is connected to the recovery buffer tank; The auxiliary section includes a mixing section communicating with the hot-side pipeline of the secondary cooler and a liquid phase section communicating with the auxiliary pipeline and each of the tail gas branch pipes. Among them, the mixing section communicates with the inlet of the gas-liquid separator, and the liquid phase section communicates with the liquid phase outlet of the gas-liquid separation.

6. The zero-emission fuel power generation system according to claim 3, characterized in that, The zero-emission fuel power generation system further includes a pressure transmitter for monitoring the pressure in the tail gas buffer tank pipeline.

7. The zero-emission fuel power generation system according to claim 2, characterized in that, The water tank is further provided with a water recovery pipeline communicating with the hot-side pipeline of the primary cooler for recovering the liquefied water vapor in the hot-side pipeline of the primary cooler.

8. The zero-emission fuel power generation system according to claim 1, characterized in that, The zero-emission fuel power generation system further includes a fuel buffer tank communicating with each of the feeding pipelines, and the fuel buffer tank communicates with the feeding port.

9. The zero-emission fuel power generation system according to claim 8, characterized in that, Each of the fuel tanks is further provided with a self-evaporation discharge pipeline communicating with the fuel buffer tank.

10. The zero-emission fuel power generation system according to claim 1, wherein, The power generation unit includes a solid oxide fuel cell power generation module.

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