Solid oxide fuel cell power generation system

Abstract

The application relates to the field of fuel cell technology, in particular to a solid oxide fuel cell power generation system; the power generation system comprises a box body, a power generation module, a fuel feeding module and an air feeding module, the box body is provided with a heat preservation cavity, the power generation module comprises a plurality of fuel cells, the fuel feeding module and the air feeding module are connected with the fuel cells, fuel and air are respectively fed into the fuel cells, the fuel cells generate power, the power generation module generates power through the fuel cells at the same time, the power generation power of the power generation system can be obviously improved, and because the fuel cells are all arranged in the heat preservation cavity, the waste heat generated in the working process of the fuel cells will enter the heat preservation cavity, heat is provided for the fuel cells, the fuel feeding module and the air feeding module can also supply heat for fuel and air, the heat of the heat preservation cavity can be fully utilized, and therefore the power generation power of the power generation system is obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell, in particular to a solid oxide fuel cell power generation system. BACKGROUND

[0002] Solid oxide fuel cell (SOFC) is a new energy conversion device, which has the characteristics of high power generation efficiency, wide fuel adaptability and clean and environmental protection. It can directly convert the chemical energy of fuels such as methane and hydrogen into electric energy or heat energy, and does not produce any harmful substances.

[0003] A SOFC power generation system disclosed in a patent document with publication number CN110896228A includes a plurality of SOFC power generation devices, each of which includes a SOFC power generation unit and a PCS unit. The PCS unit includes an inverter and a direct current voltage converter. The SOFC power generation system realizes external power generation through power generation of the SOFC power generation unit and current conversion of the PCS unit.

[0004] Since a large amount of heat is generated during power generation of the SOFC power generation unit, the existing SOFC power generation system is difficult to utilize the heat, thereby reducing the power generation capacity of the SOFC power generation system and failing to meet the power demand of large power consumption facilities such as ships. SUMMARY

[0005] The present application aims to overcome the above technical deficiencies and provide a solid oxide fuel cell power generation system to solve the technical problem that the existing solid oxide fuel cell power generation system is difficult to effectively utilize the heat generated during power generation of the power generation unit.

[0006] To achieve the above technical purpose, the technical scheme of the present application provides a solid oxide fuel cell power generation system, which includes:

[0007] A box body is provided with a heat preservation cavity;

[0008] A power generation module includes a plurality of fuel cells, each of which is arranged side by side and is arranged in the heat preservation cavity;

[0009] A fuel supply module is arranged in the heat preservation cavity and connected with each fuel cell, for supplying fuel to each fuel cell;

[0010] An air supply module is connected with each fuel cell for supplying air to each fuel cell.

[0011] In some embodiments, the power generation system further comprises a heat exchange module and a tail gas pipe, the heat exchange module is provided with a tail gas cavity and an air cavity, the air supply module is in communication with the air cavity, and two ends of the tail gas pipe are in communication with the tail gas cavity and tail gas exhaust outlets of the fuel cells respectively.

[0012] In some embodiments, the heat exchange module comprises a plurality of heat exchangers, each of which is arranged at the top of the box body and attached to the top surface of the box body, and the tail gas cavity and the air cavity are arranged in each of the heat exchangers.

[0013] In some embodiments, the power generation system further comprises a recovery module, the heat exchange module is further provided with a tail gas exhaust outlet in communication with the tail gas cavity, and the recovery module is connected to the tail gas exhaust outlet for discharging condensed water discharged from the tail gas exhaust outlet.

[0014] In some embodiments, the recovery module comprises a recovery main pipe, a plurality of water outlet branch pipes and a plurality of exhaust pipes, one end of each of the water outlet branch pipes is in communication with the tail gas exhaust outlet, the other end of each of the water outlet branch pipes is in communication with the recovery main pipe, and each of the exhaust pipes is in communication with the recovery main pipe.

[0015] In some embodiments, the recovery module further comprises a plurality of recovery branch pipes, one end of each of the recovery branch pipes is in communication with the recovery main pipe, and the other end of each of the recovery branch pipes extends to the heat preservation cavity.

[0016] In some embodiments, the air supply module comprises an air inlet pipe and an air supply pipe, the heat exchange module is further provided with an air inlet and an air outlet, one end of the air inlet pipe is connected to the atmosphere and extends towards the ground, the other end of the air inlet pipe is connected to the air inlet, and two ends of the air supply pipe are connected to the air outlet and the fuel cells respectively.

[0017] In some embodiments, the air supply module further comprises an air inlet fan connected to each of the air supply pipes.

[0018] In some embodiments, the heat exchange module is internally provided with a plurality of air resistance plates, the air cavity is located on the periphery of the tail gas cavity and forms an air flow channel extending from the air inlet to the air outlet, and each of the air resistance plates is fixed to the side wall of the air flow channel and extends towards the air inlet.

[0019] In some embodiments, adjacent air resistance plates are arranged alternately, and each of the air resistance plates is provided with a plurality of air holes arranged at intervals.

[0020] Compared with the prior art, the solid oxide fuel cell power generation system has the beneficial effects that: the box, the power generation module, the fuel supply module and the air supply module are arranged, the box is provided with a heat preservation cavity, the power generation module comprises a plurality of fuel cells, the fuel supply module and the air supply module are connected with the fuel cells, fuel and air are respectively supplied to the fuel cells to make the fuel cells generate power, the power generation module can significantly improve the power generation power of the power generation system through the simultaneous power generation of the fuel cells, and the waste heat generated in the working process of the fuel cells enters the heat preservation cavity, so that the heat preservation cavity can provide heat for the fuel cells, the fuel supply module and the air supply module, and the heat of the heat preservation cavity can be fully utilized, so that the power generation power of the power generation system is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the solid oxide fuel cell power generation system provided by the embodiment of the present application is shown.

[0022] Figure 2 The structure schematic diagram of the solid oxide fuel cell power generation system provided by the embodiment of the present application is shown.

[0023] Figure 3 The cross-sectional view of the heat exchanger of the solid oxide fuel cell power generation system provided by the embodiment of the present application is shown.

[0024] In the drawings, various reference signs are shown:

[0025] 10 - box 11 - heat preservation cavity 20 - power generation module

[0026] 30 - fuel supply module 40 - air supply module 41 - air inlet pipe

[0027] 42 - air supply pipe 43 - air inlet fan 50 - heat exchange module

[0028] 51 - tail gas cavity 52 - air cavity 53 - heat exchanger

[0029] 54 - air inlet 55 - air outlet 56 - tail gas inlet

[0030] 57 - air baffle 58 - recovery port 60 - tail gas pipe

[0031] 70 - recovery module 71 - recovery main pipe 72 - water outlet branch pipe

[0032] 73 - exhaust pipe 74 - recovery branch pipe 80 - exhaust fan

[0033] 511 - receiving groove 512 - arc-shaped flow guide surface 521 - air flow channel

[0034] 571 - air hole. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0036] The embodiment of the present application provides a solid oxide fuel cell power generation system to improve the power generation capacity of the power generation system by utilizing the waste heat generated in the power generation process of the power generation system, solve the technical problem that the solid oxide fuel cell power generation system in the prior art is difficult to effectively utilize the heat generated in the power generation process of the power generation unit, and the power generation capacity of the power generation system is difficult to meet the power demand of high-power power consumption facilities such as ships and island power stations, and at the same time, by recycling water vapor in the tail gas, the technical problem of water shortage of the ship and island power station facility is solved.

[0037] The solid oxide fuel cell power generation system of the embodiment, as shown in Figure 1 and 2 includes a box body 10, a power generation module 20, a fuel supply module 30 and an air supply module 40, the box body 10 is provided with a heat preservation cavity 11; the power generation module 20 includes a plurality of fuel cells, each fuel cell is arranged side by side and arranged in the heat preservation cavity 11; the fuel supply module 30 is arranged in the heat preservation cavity 11 and connected with each fuel cell, for supplying fuel to each fuel cell; the air supply module 40 is connected with each fuel cell, for supplying air to each fuel cell.

[0038] Specifically, the solid oxide fuel cell power generation system is provided with the box body 10, the power generation module 20, the fuel supply module 30 and the air supply module 40, the box body 10 is provided with the heat preservation cavity 11, the power generation module 20 includes a plurality of fuel cells, the fuel supply module 30 and the air supply module 40 are connected with each fuel cell, fuel and air are respectively supplied to each fuel cell, so that each fuel cell generates electricity, the power generation module 20 generates electricity at the same time through each fuel cell, which can significantly improve the power generation capacity of the power generation system, and because each fuel cell is arranged in the heat preservation cavity 11, the waste heat generated in the working process of the fuel cell will enter the heat preservation cavity 11, which can provide heat for the fuel and air of the fuel supply module 30 and the air supply module 40, and further can fully utilize the heat of the heat preservation cavity 11, so that the power generation capacity of the power generation system is significantly improved, and through the arrangement of the box body 10, the power generation system can form a whole, so as to facilitate the installation, arrangement and maintenance of the power generation system.

[0039] In the embodiment, the utilization of the heat of the power generation module 20 includes the utilization of the heat generated in the operation of the power generation module 20 and the utilization of the heat of the high-temperature exhaust gas generated by the power generation module 20. The heat generated in the operation of the power generation module 20 enters the heat preservation cavity 11 and is transferred to each fuel cell by the heat preservation cavity 11. The heat of the high-temperature exhaust gas is utilized by heat exchange with the air supplied to each fuel cell.

[0040] It can be understood that the fuel of each fuel cell stack can be hydrogen, methane, etc., and oxygen in the air is used as an oxidant to supply the fuel to generate an electrochemical reaction and generate electricity.

[0041] In the embodiment, as shown in Figure 2 , the fuel supply module 30 includes a fuel tank, a desulfurizer, a filter, an electric shut-off valve, a manual shut-off valve, and a flow meter connected in sequence. The fuel first passes through the desulfurizer for desulfurization, then flows through the filter, and then passes through the filter for filtration, and then passes through the electric shut-off valve, the manual shut-off valve, and the flow meter in sequence, and finally enters each fuel cell.

[0042] In one of the embodiments, as shown in Figure 1 and 2 , the power generation system further includes a heat exchange module 50 and an exhaust pipe 60. The heat exchange module 50 is provided with an exhaust cavity 51 and an air cavity 52. The air supply module 40 is in communication with the air cavity 52. The two ends of the exhaust pipe 60 are in communication with the exhaust cavity 51 and the exhaust gas outlet of each fuel cell, respectively. Specifically, the high-temperature exhaust gas generated in the operation of each fuel cell directly enters the exhaust pipe 60, and then enters the exhaust cavity 51 through the exhaust pipe 60. The air enters the air supply module 40 from the air cavity 52, and then is supplied to each fuel cell by the air supply module 40. The high-temperature exhaust gas exchanges heat with the air in the exhaust cavity 51 and the air cavity 52, supplies heat to the air, and heats and warms up the air, thereby realizing the utilization of the heat in the exhaust gas, improving the power generation power of the fuel cell, and meeting the power demand of large power consumption facilities such as ships and island power stations.

[0043] It can be understood that the heat exchange module 50 can be any heat exchange structure capable of exchanging heat between the exhaust gas and the air. The heat exchange module 50 can be arranged at any position inside or outside the box body 10.

[0044] In one of the embodiments, as shown in Figure 1 and 2As shown, the heat exchange module 50 includes several heat exchangers 53, each heat exchanger 53 is arranged at the top of the box 10 and is attached to the top surface of the box 10, the tail gas cavity 51 and the air cavity 52 are arranged in each heat exchanger 53. Specifically, the heat exchange module 50 is provided with several heat exchangers 53, and the heat exchange of the tail gas and the air can be realized by the synchronous cooperation of each heat exchanger 53, the heat exchange efficiency is improved, the heat exchanger 53 is arranged at the top of the box 10, and other supporting components are not needed to support, the installation of the heat exchanger 53 is facilitated, the heat exchanger 53 is attached to the top surface of the box 10, so that the heat of the box 10 can be absorbed and fully utilized.

[0045] In one embodiment, as shown in Figure 1 and 2 As shown, the air supply module 40 includes an air inlet pipe 41 and an air supply pipe 42, the heat exchange module 50 is also provided with an air inlet 54 and an air outlet 55, one end of the air inlet pipe 41 is connected to the atmosphere and extends towards the ground, the other end of the air inlet pipe 41 is connected to the air inlet 54, and the two ends of the air supply pipe 42 are respectively connected to the air outlet 55 and each fuel cell. Specifically, during the process of supplying air to each fuel cell stack, the air enters the air cavity 52 through the air inlet pipe 41, exchanges heat with the high-temperature tail gas in the tail gas cavity 51, and then enters each fuel cell stack through the air supply pipe 42. The air inlet pipe 41 can provide convenience for the air entering the heat exchange module 50, prevent the heat exchange of the air from diffusing outward from the air inlet 54, and cause waste of heat, and the end of the air inlet pipe 41 connected to the atmosphere extends towards the ground, which can effectively prevent rainwater from entering the air cavity 52 through the air inlet pipe 41.

[0046] In this embodiment, as shown in Figure 1 and 2 As shown, the tail gas pipe 60, the air inlet pipe 41 and the air supply pipe 42 are each provided with several, one end of each tail gas pipe 60 is connected to the tail gas outlet of each fuel cell, the other end of each tail gas pipe 60 is connected to the tail gas inlet 56 of each heat exchanger 53, each air inlet pipe 41 is connected to the air inlet 54 of each heat exchanger 53, one end of each air supply pipe 42 is connected to the air outlet 55 of each heat exchanger 53, and the other end of each air supply pipe 42 is connected to the cathode air inlet of each fuel cell.

[0047] In one embodiment, as shown in Figure 1 and 2As shown, the air supply module 40 further comprises air intake fans 43 connected to the air supply pipes 42. Specifically, by the air suction of the air intake fans 43, air can be sucked into the air cavity 52 through the air intake pipe 41, and then the air in the air cavity 52 can be sucked into each fuel cell. The air intake fans 43 can provide driving force for the air supply to each fuel cell, and by controlling the air intake flow rate, the air temperature can be controlled, thereby facilitating the control of the power generation of each fuel cell and improving the stability of the power generation system.

[0048] In this embodiment, as shown in Figure 2 Each air intake fan 43 is arranged on the air supply pipe 42.

[0049] In one embodiment, as shown in Figure 3 The heat exchange module 50 is internally provided with a plurality of air resistance plates 57, the air cavity 52 is located on the periphery of the tail gas cavity 51 and forms an air flow channel 521 extending from the air inlet to the air outlet, and each air resistance plate 57 is fixed to the side wall of the air flow channel 521 and extends towards the air inlet 54. Specifically, the air cavity 52 is arranged on the periphery of the tail gas cavity 51, which can better exchange heat with the tail gas in the tail gas cavity 51, the air flow channel 521 can orderly flow the air in the air cavity 52 from the air inlet to the air outlet, and the air resistance plate 57 extends towards the air inlet 54, which can provide resistance to the flow of air towards the air outlet, thereby reducing the air flow rate and enabling the air to fully exchange heat with the tail gas in the tail gas cavity 51, achieving full utilization of the heat of the tail gas.

[0050] In one embodiment, as shown in Figure 3 The adjacent air resistance plates 57 are arranged in a staggered manner, and each air resistance plate 57 is provided with a plurality of air holes 571 arranged at intervals. Specifically, by arranging the air resistance plates 57 in a staggered manner and the air holes 571, the air in the air flow channel 521 can form turbulence, thereby keeping the temperature of the air uniform and improving the power generation efficiency of each fuel cell.

[0051] In this embodiment, since the main component of the tail gas is water vapor, a large amount of condensed water is generated due to the decrease in temperature during the heat exchange of the tail gas. By arranging the air flow channel 521 and the air resistance plate 57, the temperature of the tail gas can be greatly reduced while improving the heat exchange efficiency of the tail gas and the air, thereby liquefying the water vapor in the tail gas to generate a large amount of condensed water, which can be conveniently collected and recycled, avoiding the waste of water vapor due to the discharge of the tail gas.

[0052] In one embodiment, as shown in Figures 1 to 3As shown, the power generation system further comprises a recovery module 70, and the heat exchange module 50 is further provided with a tail gas outlet 58, which is in communication with the tail gas cavity 51, and the recovery module 70 is connected with the tail gas outlet 58 for discharging the condensed water discharged from the tail gas outlet 58. Specifically, the tail gas of the tail gas cavity 51 and the condensed water generated in the process of liquefying the tail gas will be discharged from the tail gas outlet 58 into the recovery module 70 and then be discharged uniformly by the recovery module 70, so as to realize centralized treatment of the condensed water and facilitate subsequent recycling of the condensed water, thereby providing additional water source for power consumption facilities such as ships and pirate power stations which lack water resources.

[0053] In one of the embodiments, as shown in Figure 3 , the side wall of the tail gas cavity 51 is provided with a receiving groove 511 which extends along the circumferential side of the tail gas cavity 51 and is located at the lower side of the tail gas outlet 58. The condensed water in the tail gas cavity 51 will flow down from the side wall of the tail gas cavity 51 and enter the receiving groove 511, which will receive the condensed water, and when the condensed water reaches a certain height, it will flow out from the tail gas outlet 58 and enter the recovery module 70. The receiving groove 511 not only facilitates the discharge of the condensed water, but also prevents the condensed water from flowing back from the tail gas pipe 60, thereby improving the recovery rate of the condensed water.

[0054] In one of the embodiments, as shown in Figure 3 , the top of the tail gas cavity 51 is provided with an arc-shaped flow guide surface 512 which extends to the side wall of the tail gas cavity 51. The condensed water condensed on the top wall of the tail gas cavity 51 can be guided to the side wall of the tail gas cavity 51 through the arc-shaped flow guide surface 512 and finally enter the receiving groove 511, thereby avoiding the condensed water on the top of the tail gas cavity 51 from falling onto the tail gas pipe 60 and improving the recovery rate of the condensed water.

[0055] In one of the embodiments, as shown in Figure 1 and 2 , the recovery module 70 comprises a recovery main pipe 71, a plurality of water outlet branch pipes 72 and a plurality of exhaust pipes 73. One end of each water outlet branch pipe 72 is in communication with the tail gas outlet 58, the other end of each water outlet branch pipe 72 is in communication with the recovery main pipe 71, and each exhaust pipe 73 is in communication with the recovery main pipe 71. Specifically, the condensed water and the unliquefied tail gas in the tail gas cavity 51 will enter the recovery main pipe 71 from the water outlet branch pipes 72, the tail gas can be further liquefied in the recovery main pipe 71 to reduce the amount of water vapor in the tail gas and improve the recovery rate of the condensed water, and the remaining unliquefied tail gas will be discharged through the exhaust pipes 73.

[0056] In one of the embodiments, as shown in Figure 1 and 2 , the tail gas discharge end of the exhaust pipe 73 extends towards the ground. Specifically, this arrangement can prevent rainwater from entering the exhaust pipe 73 from the tail gas discharge end of the exhaust pipe 73.

[0057] In some embodiments, as shown in Figure 1 and 2 The recovery module 70 further comprises a plurality of recovery branch pipes 74, one end of each of the recovery branch pipes 74 is in communication with the recovery main pipe 71, and the other end of each of the recovery branch pipes 74 extends to the heat preservation cavity 11. Specifically, the condensed water of the recovery main pipe 71 will be discharged from each of the recovery branch pipes 74 into the heat preservation cavity 11, and is collected by the heat preservation cavity 11, so that a water storage device is not needed to be separately arranged to store water, and the subsequent use of the condensed water is facilitated, and the storage of the condensed water by the heat preservation cavity 11 provides an additional water source for power utilization facilities such as ships and pirate power stations which lack water resources.

[0058] In the embodiment, the box body 10 is provided with an overflow pipe (not labeled in the figure), which can be used for discharging the condensed water in the box body 10.

[0059] In the embodiment, as shown in Figure 1 and 2 The power generation system further comprises a temperature monitor and an exhaust fan 80, the temperature monitor is arranged in the heat preservation cavity 11 and is used for detecting the temperature of the heat preservation cavity 11, and the exhaust fan 80 is arranged on the box body 10 and is used for discharging the gas in the heat preservation cavity 11. Specifically, when the temperature of the heat preservation cavity 11 is too high, the exhaust fan 80 is started to discharge the gas in the heat preservation cavity 11, so as to ensure the safety of the operation of the power generation module 20.

[0060] The specific working principle of the solid oxide fuel cell power generation system provided by the embodiment is as follows: when the power generation system is generating power, the fuel is supplied to each fuel cell by the fuel supply module 30, the air intake fan 43 is started to suck the air into the air cavity 52 of each heat exchanger 53 through the air inlet pipe 41, and then the air in the air cavity 52 is sucked into each fuel cell, so that each fuel cell generates power, the tail gas generated by each fuel cell will enter the tail gas cavity 51 of each heat exchanger 53 through each tail gas pipe 60, and is exchanged with the air in the air cavity 52 to realize the utilization of the heat of the tail gas, improve the power generation efficiency of the fuel cell, and part of the tail gas is liquefied and forms condensed water, the formed condensed water and tail gas will enter the recovery main pipe 71 through each water outlet branch pipe 72, the tail gas will be discharged through each exhaust pipe 73, and the condensed water will be discharged from each recovery branch pipe 74 into the heat preservation cavity 11 and then overflow from the overflow pipe, so as to realize the recovery and utilization of the condensed water.

[0061] The solid oxide fuel cell power generation system of the embodiment is mainly applied to facilities with large power consumption, such as water resource ships and island power stations, and can provide large power consumption and additional water source for the facilities. The solid oxide fuel cell power generation system of the embodiment is provided with the box 10 to provide heat preservation for the power generation system and installation for the heat exchange module 50. The concentrated heat exchange of the heat exchange module 50 at the top of the box can fully utilize the heat of the tail gas, and the condensed water in the tail gas can be collected and recovered to the box 10 through the recovery module 70, so as to realize the recycling of the water vapor in the tail gas. By arranging the power generation system in the facilities such as ships and island power stations, the power consumption demand of the facilities such as ships and island power stations can be met, and additional water source can be provided for the facilities, so as to solve the water problem of the facilities such as ships and island power stations.

[0062] The specific embodiments of the application described above do not constitute a limitation on the protection scope of the application. Any various other corresponding changes and modifications made according to the technical concept of the application shall be included in the protection scope of the claims of the application.

Claims

1. A solid oxide fuel cell power generation system, characterized in that, include: The enclosure is equipped with an insulated cavity; The power generation module includes several fuel cells, each of which is arranged in parallel and housed within the insulation cavity; A fuel supply module, which is located inside the insulation cavity and connected to each of the fuel cells, is used to supply fuel to each of the fuel cells; and An air supply module, connected to each of the fuel cells, is used to supply air to each of the fuel cells; The heat exchange module includes an exhaust gas chamber and an air chamber, and the air supply module is connected to the air chamber. The exhaust pipe has two ends connected to the exhaust chamber and the exhaust outlet of each of the fuel cells, respectively. The power generation system also includes a recovery module. The heat exchange module is also provided with an exhaust gas outlet, which is connected to the exhaust gas chamber. The recovery module is connected to the exhaust gas outlet and is used to discharge the condensate discharged from the exhaust gas outlet. The air supply module includes an air intake pipe and an air supply pipe. The heat exchange module is also provided with an air inlet and an air outlet. One end of the air intake pipe is connected to the atmosphere and extends towards the ground. The other end of the air intake pipe is connected to the air inlet. The two ends of the air supply pipe are respectively connected to the air outlet and each of the fuel cells. The heat exchange module is provided with several air baffles. The air chamber is located on the periphery of the exhaust chamber and forms an air flow channel extending from the air inlet to the air outlet. Each air baffle is fixed to the side wall of the air flow channel and extends toward the air inlet. The adjacent air-blocking plates are staggered, and each air-blocking plate is provided with a number of spaced air holes. The side wall of the exhaust gas chamber is provided with a receiving groove, which extends along the periphery of the exhaust gas chamber and is located below the exhaust gas outlet. The top of the exhaust gas chamber is provided with an arc-shaped guide surface, which extends to the side wall of the exhaust gas chamber.

2. The solid oxide fuel cell power generation system according to claim 1, characterized in that, The heat exchange module includes several heat exchangers, each of which is spaced apart on the top of the housing and attached to the top surface of the housing. The exhaust gas chamber and the air chamber are disposed in each of the heat exchangers.

3. The solid oxide fuel cell power generation system according to claim 1, characterized in that, The recycling module includes a main recycling pipe, several water outlet branch pipes, and several exhaust pipes. One end of each water outlet branch pipe is connected to the exhaust gas outlet, and the other end of each water outlet branch pipe is connected to the main recycling pipe. Each exhaust pipe is connected to the main recycling pipe.

4. The solid oxide fuel cell power generation system according to claim 3, characterized in that, The recycling module also includes several recycling branch pipes, one end of each recycling branch pipe is connected to the main recycling pipe, and the other end of each recycling branch pipe extends to the insulation cavity.

5. The solid oxide fuel cell power generation system according to claim 1, characterized in that, The air supply module also includes an air intake fan, which is connected to each of the air supply pipes.

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