Completely modularized fuel cell integrated thermal component

Abstract

The utility model relates to a complete modular fuel cell integrated thermal component, and relates to the technical field of thermal components for fuel cells, the complete modular fuel cell integrated thermal component comprises a combustor, an air preheater, a reformer, a steam generator and an exhaust cooler which are nested layer by layer by adopting a sleeve type structure from inside to outside, and the complete modular fuel cell integrated thermal component is small in size, large in power density, reasonable in arrangement and high in thermal component integration degree. Connecting pipelines between the sub-components are short, the pressure drop loss is reduced, the exposed surface area is reduced through the sleeve type structure and the short connecting pipelines, and the working temperature of the core hot component is reduced from inside to outside, so that heat loss and thermal stress are reduced. The fuel cell integrated hot component can accurately adjust the flow and the temperature, can meet the requirements of working condition changes, can be independently used for preparing hydrogen-containing synthesis gas and can also be combined with a fuel cell for use.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of thermal components for fuel cells, in particular to a fully modular fuel cell integrated thermal component. BACKGROUND

[0002] The statements herein are provided only to complement the background of the present disclosure and are not necessarily prior art.

[0003] A fuel cell is a device that converts the chemical energy of fuel into electrical energy, and the energy conversion of the fuel cell usually adopts an integrated design to integrate the components such as burners, heat exchangers, reformers, etc. used to improve work efficiency.

[0004] The existing patent CN117878350A discloses a modular fuel cell integrated thermal component, system and working method, which introduces the use of integrated fuel cells, but the reformer of the patent only has one kind of mixed gas flow. The advantage is that the single mixed gas flow can avoid cross leakage in the reformer, but the heat required in the reforming process mainly depends on the heat carried by the gas, as well as the heat conduction and heat radiation from the burners and air preheaters on both sides. The controllability of this heat exchange mode is relatively poor, and the response speed is slow, and the adjustment range is limited, which has an impact on the performance and efficiency of the system when rapid temperature adjustment is required. UTILITARIAN CONTENT

[0005] The purpose of the present disclosure is to provide a fully modular fuel cell integrated thermal component, which can at least solve one of the above technical problems.

[0006] To achieve the above purpose, one or more embodiments of the present disclosure provide a fully modular fuel cell integrated thermal component, which comprises a burner, an air preheater, a reformer, a steam generator and an exhaust cooler arranged in sequence from inside to outside. The burner is arranged at the center position of the modular fuel cell, the air preheater is provided with an air connection pipe communicating with the exhaust cooler, a tail gas connection pipe communicating with the steam generator, and a mixer connected with the reformer. The reformer is a partition wall heat exchanger, and the heat required in the reforming process directly comes from the hot side air in the heat exchanger.

[0007] Further, the burner is a cylindrical pipe with a stepped structure, and air and fuel gas enter the burner, mix and burn, and then are discharged; the bottom of the burner is a tail gas outlet, and a first temperature sensor for monitoring the outlet temperature and working state of the burner is arranged on the tail gas outlet.

[0008] Further, the air preheater is designed in a cylindrical structure, and a cylindrical space for placing the burner is arranged at a middle position, the burner is connected with the air preheater through bolts, and the combustion tail gas discharged from the burner enters the air preheater to perform wall-type heat exchange with the low-temperature air entering the air preheater from outside.

[0009] Further, the reformer is closely contacted with the air preheater and fixed and limited through bolts, the high-temperature air formed after heat exchange of the air preheater enters the reformer to pre-mix with the cold air entering the reformer at the bottom of the reformer, and then performs wall-type heat exchange with the mixed gas entering the reformer in the reformer.

[0010] Further, the steam generator is arranged outside the reformer and connected through bolts, and the mixed gas formed after sufficient mixing of the fuel gas and the water vapor in the steam generator enters the reformer through a pipeline.

[0011] Further, the exhaust gas cooler is arranged outside the steam generator and connected through bolts, and is used for heat exchange of the cold air and the battery exhaust gas, the battery exhaust gas is discharged from the integrated heat component through an exhaust gas outlet pipe after heat exchange, and the cold air is discharged from the exhaust gas cooler through a third air outlet pipe.

[0012] Further, the exhaust gas cooler is communicated with the air preheater through an air connecting pipe, and is used for circulation of the air between the exhaust gas cooler and the air preheater.

[0013] Further, the steam generator is communicated with the air preheater through a tail gas connecting pipe, and is used for circulation of the tail gas between the steam generator and the air preheater.

[0014] Further, the integrated heat component further comprises a mixer for mixing air at different temperatures, the mixer is arranged at the top of the integrated heat component and connected with the air preheater and the reformer through bolts respectively.

[0015] Further, the integrated heat component adopts a sleeve type structure and is nested layer by layer to reduce the length of the pipeline and reduce the pressure loss.

[0016] The above one or more technical solutions have the following beneficial effects:

[0017] (1)The utility model discloses a sleeve type structure is installed layer by layer to the burner, air preheater, reformer, steam generator and exhaust cooler from inside to outside, and the volume is small, and the power density is big, and the reasonable arrangement is high, and the subcomponent is connected pipeline short, and it helps to reduce the pressure drop loss, and the sleeve type structure and short connecting pipeline help to reduce the exposed surface area, and the core hot component working temperature is reduced from inside to outside, and these all help to reduce the heat loss and thermal stress, and the fuel cell integrated type hot component can carry out accurate regulation to flow and temperature, can satisfy the working condition change demand.

[0018] (2)The utility model discloses a modularization design, all components can be detached, and the component can be quickly replaced, and the assembly is convenient, and it helps to reduce the cost, and the outer surface is neat, and there is no extra pipeline, and it is convenient to keep warm, and the structure design such as support can be used alone to prepare hydrogen-containing synthesis gas and can be used in combination with fuel cell. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description, explain the application and do not limit the application.

[0020] Figure 1 It is modularization fuel cell integrated type hot component overall structure diagram for the utility model;

[0021] Figure 2 It is burner structure diagram in modularization fuel cell integrated type hot component for the utility model;

[0022] Figure 3 It is air preheater structure diagram in modularization fuel cell integrated type hot component for the utility model, wherein (a) is air preheater overall view, (b) is air preheater cross section view;

[0023] Figure 4 It is reformer structure diagram in modularization fuel cell integrated type hot component for the utility model, wherein (a) is reformer overall view, (b) is reformer cross section view;

[0024] Figure 5 It is steam generator structure diagram in modularization fuel cell integrated type hot component for the utility model, wherein (a) is steam generator overall view, (b) is steam generator cross section view;

[0025] Figure 6 It is exhaust cooler structure diagram in modularization fuel cell integrated type hot component for the utility model;

[0026] Figure 7 It is air connection pipe structure diagram in modularization fuel cell integrated type hot component for the utility model;

[0027] Figure 8 The utility model modularization fuel cell integrated heat component middle exhaust pipe structure drawing

[0028] Figure 9 The utility model modularization fuel cell integrated heat component middle mixer structure drawing, wherein (a) is the whole picture of the mixer, (b) is the sectional view of the mixer;

[0029] Figure 10 The utility model modularization fuel cell integrated heat component assembly process schematic drawing;

[0030] Figure 11 The utility model modularization fuel cell integrated heat component sectional view;

[0031] Figure 12 The utility model modularization fuel cell integrated heat component control strategy schematic drawing.

[0032] In the figure, 1, combustor;101, first air inlet pipe;102, first gas inlet pipe;103, first temperature sensor;104, first exhaust outlet pipe;105, second bolt hole;

[0033] 2, air preheater;201, first air outlet pipe;202, fourth bolt hole;203, second exhaust outlet pipe;204, fifth bolt hole;205, second air outlet pipe;206, second temperature sensor, 207, first exhaust inlet pipe;208, second air inlet pipe;209, sixth bolt hole;210, first connecting bolt;211, third bolt hole;

[0034] 3, reformer;301, third air outlet pipe;302, seventh bolt hole;303, third temperature sensor;304, mixed gas inlet pipe;305, fourth temperature sensor;306, third air inlet pipe;307, eighth bolt hole;308, fifth temperature sensor;309, hydrogen-containing synthesis gas outlet pipe;310, ninth bolt hole;311, tenth bolt hole;312, fourth air inlet pipe;313, second connecting bolt;314, first assembly positioning groove;

[0035] 4, steam generator;401, second exhaust inlet pipe;402, eleventh bolt hole;403, second gas inlet pipe;404, water inlet pipe;405, third gas inlet pipe;406, second exhaust outlet pipe;407, sixth temperature sensor, 408, twelfth bolt hole;409, third connecting bolt;410, fourth connecting bolt;411, mixed gas outlet pipe;412, second assembly positioning groove;

[0036] 5. Exhaust cooler; 501. Exhaust inlet pipe; 502. Thirteenth bolt hole; 503. Fifth air inlet pipe; 504. Fourteenth bolt hole; 505. Fifteenth bolt hole; 506. Exhaust outlet pipe; 507. Seventh temperature sensor; 508. Sixteenth bolt hole; 509. Third air outlet pipe; 510. Seventeenth bolt hole;

[0037] 6. Air connecting pipe; 601. Eighth temperature sensor;

[0038] 7. Exhaust gas connection pipe; 701. Ninth temperature sensor;

[0039] 8. Mixer; 801. Sixth air inlet pipe; 802. Eighteenth bolt hole; 803. Seventh air inlet pipe; 804. Nineteenth bolt hole; 805. Eighth air inlet pipe; 806. Twentieth bolt hole; 807. Tenth temperature sensor; 808. Twenty-first bolt hole; 809. Fourth air outlet pipe. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Explanation of relevant terms:

[0042] Hot components: Components that operate at higher temperatures.

[0043] Integrated thermal components: Combining multiple components, such as multiple individual heat exchangers or burners connected by pipelines, to form a whole component is called an integrated thermal component.

[0044] Synthesis gas: a gas containing multiple components. The synthesis gas in this invention generally contains hydrogen, carbon dioxide, water vapor, etc.

[0045] Indirect heat exchange: Hot and cold fluids are separated by a solid wall for heat exchange, and they do not mix.

[0046] Example 1

[0047] like Figures 1-12 As shown, this embodiment provides a fully modular integrated thermal component for a fuel cell, including a burner 1, an air preheater 2, a reformer 3, a steam generator 4, and an exhaust cooler 5, which are nested in a sleeve-like structure from the inside out. The sleeve-like structure reduces pipeline length and pressure loss.

[0048] like Figure 1As shown, the burner 1 is located at the center of the modular fuel cell integrated thermal component. The air preheater 2 is equipped with an air connection pipe 6 that connects to the exhaust cooler 5, a tail gas connection pipe 7 that connects to the steam generator 4, and a mixer 8 that connects to the reformer 3. The reformer is a partition wall heat exchanger, and the heat required for the reforming process comes directly from the hot side air inside the heat exchanger.

[0049] like Figure 2 As shown, the burner 1 is a cylindrical tube with a stepped structure. The top of the burner 1 is provided with a first air inlet pipe 101 for connecting air and a first gas inlet pipe 102 for connecting gas. The bottom is provided with a first exhaust gas outlet pipe 104 for discharging exhaust gas. A first temperature sensor 103 is provided on the first exhaust gas outlet pipe 104. The top of the first air inlet pipe 101 is provided with a first bolt hole 106 for connecting to an external air pipeline. The top of the burner 1 is also provided with a second bolt hole 105 for connecting to an air preheater 2.

[0050] Specifically, the combustor requires fuel gas from external sources, and the combustor requires air supplied by external air and hot air discharged from the integrated thermal component, either alone or together. When the integrated thermal component is coupled with devices such as fuel cells, the combustor requires fuel supplied by external gas and (battery) exhaust gas, either alone or together, and requires air supplied by external air and hot air discharged from the battery, either alone or together. Air and combustible gas enter the combustor through the first air inlet pipe 101 and the first gas inlet pipe 102, respectively, and are mixed and combusted. The combustion exhaust gas is discharged through the first exhaust gas outlet pipe 104, and the combustor outlet temperature and operating status are monitored by the first temperature sensor 103.

[0051] like Figure 3As shown, the air preheater 2 is designed in a cylindrical structure, and a cylindrical space for placing the burner 1 is arranged at the middle position. A first connecting bolt 210 for cooperating with the second bolt hole 105 of the burner 1 is arranged at the top of the air preheater 2, a first air outlet pipe 201 for connecting the air preheater 2 with the mixer 8 is arranged, the fourth bolt hole 202 is arranged on the first air outlet pipe 201, a second tail gas outlet pipe 203 for connecting the air preheater 2 with the tail gas connecting pipe 7 is arranged, the fifth bolt hole 204 is arranged on the second tail gas outlet pipe 203, a sixth bolt hole 209 for connecting the air preheater 2 with the air connecting pipe 6 is arranged, a third bolt hole 211 for sealing the connection between the air preheater 2 and the reformer 3 is arranged, a second air inlet pipe 208 for connecting the low-temperature air outside is arranged, and the first air outlet pipe 201 and the second air outlet pipe 205 for discharging the air are arranged at the upper and lower ends of the air preheater 2 respectively. The second temperature sensor 206 for monitoring the temperature of the air leaving the air preheater 2 is arranged on the second air outlet pipe 205. The first tail gas inlet pipe 207 for connecting the first tail gas outlet pipe 104 of the burner 1 is arranged at the bottom of the air preheater 2, and the heat exchange area for the discharged combustion tail gas to pass through is arranged.

[0052] Specifically, the air preheater 2 is used for heating the air. The combustion tail gas discharged by the burner 1 enters the air preheater 2 through the first tail gas inlet pipe 207, and the low-temperature air enters the air preheater 2 through the second air inlet pipe 208. The low-temperature air and the high-temperature tail gas perform wall-type heat exchange in the air preheater 2. After the heat exchange is completed, the air is discharged from the air preheater 2 through the first air outlet pipe 201 and the second air outlet pipe 205 respectively, and the tail gas is discharged from the air preheater 2 through the second tail gas outlet pipe 203.

[0053] As shown in FIG. 2, the air preheater 2 is connected with the burner 1, the mixer 8, the air connecting pipe 6, the tail gas connecting pipe 7, and the reformer 3. Figure 4As shown, the reformer 3 is arranged outside the air preheater 2 in close contact with the air preheater 2, the top of the reformer 3 is provided with a second connecting bolt 313 for fixing and limiting the position of the air preheater 2, the second connecting bolt 313 corresponds to a third bolt hole 211 on the air preheater 2, and a hydrogen-containing synthesis gas outlet pipe 309 connected with an external pipeline is further arranged, and the external pipeline and the hydrogen-containing synthesis gas outlet pipe 309 are fixed and sealed through a ninth bolt hole 310; a seventh bolt hole 302 for sealing the reformer 3 and the mixer 8, an eighth bolt hole 307 for sealing the connection between the reformer 3 and the steam generator 4, a fourth air inlet pipe 312, a tenth bolt hole 311 for sealing the connection between the fourth air inlet pipe 312 and an external cold air pipeline, and a mixed gas inlet pipe 304 connected with the steam generator 4 are further arranged, and the mixed gas inlet pipe 304 is used to connect the mixed gas flowing from the steam generator 4 to the reformer 3; the part of the reformer 3 inside and in close contact with the air preheater 2 is further provided with a first assembly positioning groove 314 corresponding to a second air outlet pipe 205 on the air preheater 2, which facilitates the assembly of the reformer 3 and the air preheater 2.

[0054] The third air outlet pipe 301 is provided with a third temperature sensor 303 for monitoring the temperature of the air leaving the reformer 3, and the outer bottom of the reformer 3 is provided with a fourth temperature sensor 305 for monitoring the temperature of the air after mixing with the mixed gas for heat exchange, and the hydrogen-containing synthesis gas outlet pipe 309 is provided with a fifth temperature sensor 308 for monitoring the outlet temperature of the hydrogen-containing synthesis gas.

[0055] Specifically, the high-temperature air of the air preheater 2 enters the reformer 3 through the second air outlet pipe 205 and the third air inlet pipe 306, and the cold air enters the reformer 3 through the fourth air inlet pipe 312, and the cold air and the high-temperature air are premixed at the bottom of the reformer 3, and then enter the reformer 3 for wall-type heat exchange with the mixed gas.

[0056] After the heat exchange is completed, the air is discharged from the reformer 3 through the third air outlet pipe 301, and the wall surface of the mixed gas side of the reformer 3 is coated with a catalyst for catalytic reforming reaction of the mixed gas, and the mixed gas generates hydrogen-containing synthesis gas after catalytic reforming and is discharged through the hydrogen-containing synthesis gas outlet pipe 309.

[0057] As Figure 5As shown, the steam generator 4 is arranged outside the reformer, and the fourth connecting bolt 410 is arranged on the top of the steam generator 4 and corresponds to the eighth bolt hole 307 on the reformer 3, which is used to seal the connection between the steam generator 4 and the reformer 3. The third connecting bolt 409 for connecting the steam generator 4 and the exhaust cooler 5, the second tail gas inlet pipe 401, and the eleventh bolt hole 402 for connecting the second tail gas inlet pipe 401 and the tail gas connecting pipe 7 are also arranged on the top of the steam generator 4. The portion of the inner side of the steam generator 4 in contact with the reformer 3 is provided with a second assembly positioning groove 412 corresponding to the outer interlayer pipe connected with the hydrogen-containing synthesis gas outlet pipe 309, so as to facilitate the assembly between the reformer 3 and the steam generator 4.

[0058] The bottom of the steam generator 4 is provided with the second tail gas outlet pipe 406, the twelfth bolt hole 408 for connecting the second tail gas outlet pipe 406 and the external tail exhaust pipe, the second gas inlet pipe 403 for connecting the external fuel gas and water, the water inlet pipe 404, the third gas inlet pipe 405, and the sixth temperature sensor 407 arranged on the second tail gas outlet pipe 406 for monitoring the temperature of the combustion tail gas leaving the steam generator.

[0059] Specifically, the combustion tail gas enters the steam generator 4 through the second tail gas inlet pipe 401, the fuel gas and water enter the steam generator 4 through the second gas inlet pipe 403, the third gas inlet pipe 405, and the water inlet pipe 404 respectively, and the fuel gas and water and the combustion tail gas perform interwall heat exchange in the steam generator 4.

[0060] After the heat exchange is completed, the combustion tail gas is discharged from the integrated heat component through the second tail gas outlet pipe 406, and the mixed gas outlet pipe 411 is arranged on the steam generator 4.

[0061] As shown in the figure, Figure 6 The exhaust cooler 5 is arranged outside the steam generator 4 and is connected with the third connecting bolt 409 on the steam generator 4 through the seventeenth bolt hole 510 arranged on the top of the exhaust cooler 5. The top of the exhaust cooler 5 is also provided with the exhaust inlet pipe 501 connected with the external exhaust pipe, the thirteenth bolt hole 502 arranged on the exhaust inlet pipe 501, and the third air outlet pipe 509 connected with the air connecting pipe 6, and the sixteenth bolt hole 508 arranged on the third air outlet pipe 509. The bottom of the outer side of the exhaust cooler 5 is provided with the fifth air inlet pipe 503 connected with the external cold air pipeline, the fourteenth bolt hole 504 arranged on the fifth air inlet pipe 503, and the exhaust outlet pipe 506 connected with the external exhaust pipe, and the fifteenth bolt hole 505 and the seventh temperature sensor 507 arranged on the exhaust outlet pipe 506 for monitoring the temperature of the exhaust gas leaving the integrated heat component.

[0062] Specifically, the exhaust cooler 5 is used for heat exchange between the cold air and the battery exhaust. The battery exhaust enters the exhaust cooler 5 through the exhaust inlet pipe 501, and the cold air enters the exhaust cooler 5 through the fifth air inlet pipe 503. The battery exhaust and the cold air are exchanged in the exhaust cooler 5, and after the heat exchange is completed, the battery exhaust is discharged from the integrated thermal component through the exhaust outlet pipe 506, and the air is discharged from the exhaust cooler 5 through the third air outlet pipe 509.

[0063] As shown in Figure 7 , the air connection pipe 6 is provided with an eighth temperature sensor 601, and the air connection pipe 6 is used to connect the third air outlet pipe 509 of the exhaust cooler 5 and the second air inlet pipe 208 of the air preheater 2, and the eighth temperature sensor 601 monitors the temperature of the air flowing through it in order to control the integrated thermal component.

[0064] As shown in Figure 8 , the tail gas connection pipe 7 is provided with a ninth temperature sensor 701, and the tail gas connection pipe 7 is used to connect the second tail gas inlet pipe 401 of the steam generator 4 and the second tail gas outlet pipe 203 of the air preheater 2, and the ninth temperature sensor 701 monitors the temperature of the tail gas flowing through it in order to control the integrated thermal component.

[0065] As shown in Figure 9 , the integrated thermal component further comprises a mixer 8 provided at the top thereof for mixing air of different temperatures, and the mixer 8 is provided with a sixth air inlet pipe 801, a seventh air inlet pipe 803, an eighth air inlet pipe 805 connected to an external air pipe, a fourth air outlet pipe 809 connected to an external air pipe, and air of different temperatures and flow rates entering through the sixth air inlet pipe 801, the seventh air inlet pipe 803 and the eighth air inlet pipe 805 is fully mixed in the mixer 8, and then discharged from the integrated thermal component through the fourth air outlet pipe 809.

[0066] The mixer 8 is also provided with an eighteenth bolt hole 802 corresponding to the fourth bolt hole 202 of the air preheater 2, a nineteenth bolt hole 804 corresponding to the seventh bolt hole 302 of the reformer 3, a twentieth bolt hole 806 provided on the eighth air inlet pipe 805, a twenty-first bolt hole 808 provided on the fourth air outlet pipe 809, and a tenth temperature sensor 807 for monitoring the temperature of the air leaving the integrated thermal component.

[0067] As shown in Figure 10 , it is a schematic diagram for the assembly process of the modular fuel cell integrated thermal component.

[0068] Firstly, as shown in Figure 10As shown in (a)-(c), install burner 1 and air preheater 2. Place air preheater 2 on a flat surface, and insert burner 1 into air preheater 2 from above. Align the second bolt hole 105 on burner 1 with the first connecting bolt 210 on air preheater 2, and secure burner 1 and air preheater 2 with nuts. The installation of burner 1 and air preheater 2 is complete, as shown in the diagram. Figure 10 As shown in (c).

[0069] The second step is to install the reformer 3. (Example:) Figure 10 As shown in (d), the combined assembly of burner 1 and air preheater 2 is inserted into the reformer 3 from the top. Note that the first mounting positioning groove 314 on the reformer 3 corresponds to the second air outlet pipe 205 on the air preheater 2. Align the third bolt hole 211 on the air preheater 2 with the second connecting bolt 313 on the reformer 3. Secure the air preheater 2 and the reformer 3 with nuts to complete the installation of the reformer 3. The result is as follows. Figure 10 As shown in (e).

[0070] The third step is to install the steam generator 4. (For example...) Figure 10 As shown in (f), the steam generator 4 is fitted onto the outside of the combined assembly of burner 1, air preheater 2, and reformer 3. Note that the second assembly positioning groove 412 on the steam generator 4 corresponds to the hydrogen-containing synthesis gas outlet pipe 309 on the reformer 3. Align the eighth bolt hole 307 on the reformer 3 with the fourth connecting bolt 410 on the steam generator 4. Secure the steam generator 4 and the reformer 3 with nuts to complete the installation of the steam generator 4. The result is as follows. Figure 10 As shown in (g).

[0071] Step 4: Install the exhaust cooler 5. (For example...) Figure 10 As shown in (h), the exhaust cooler 5 is fitted over the outer side of the assembly of burner 1, air preheater 2, reformer 3, and steam generator 4 from the top. During installation, ensure that the third air outlet pipe 509 on the exhaust cooler 5 and the second air inlet pipe 208 on the air preheater 2 are aligned for subsequent installation. Align the seventeenth bolt hole 510 on the exhaust cooler 5 and the third connecting bolt 409 on the steam generator 4. Secure the exhaust cooler 5 and steam generator 4 with nuts to complete the installation of the exhaust cooler 5. The result is as follows: Figure 10 As shown in (i).

[0072] Step 5, install air connection pipe 6. (For example...) Figure 10 As shown in (j), align the bolt holes at both ends of the air connection pipe 6 with the sixteenth bolt hole 508 on the exhaust cooler 5 and the sixth bolt hole 209 on the air preheater 2, respectively. Then, use bolts to connect the air connection pipe 6 to the air preheater 2 and the exhaust cooler 5, completing the installation of the air connection pipe 6. The result is as follows: Figure 10Step 6, installation of the exhaust connection pipe 7. As shown in Fig. 6 (k), the two bolt holes of the exhaust connection pipe 7 are respectively aligned with the eleventh bolt hole 402 of the steam generator 4 and the fifth bolt hole 204 of the air preheater 2, and the exhaust connection pipe 7 is connected to the air preheater 2 and the steam generator 4 respectively by using bolts, thus completing the installation of the exhaust connection pipe 7, as shown in Fig. 6 (1).

[0073] Step 6, installation of the exhaust connection pipe 7. As shown in Fig. 6 (k), the two bolt holes of the exhaust connection pipe 7 are respectively aligned with the eleventh bolt hole 402 of the steam generator 4 and the fifth bolt hole 204 of the air preheater 2, and the exhaust connection pipe 7 is connected to the air preheater 2 and the steam generator 4 respectively by using bolts, thus completing the installation of the exhaust connection pipe 7, as shown in Fig. 6 (1). Figure 10 Figure 10

[0074] Step 7, installation of the mixer 8. As shown in Fig. 6 (n), the eighteenth bolt hole 802 of the mixer 8 is aligned with the fourth bolt hole 202 of the air preheater 2, and the nineteenth bolt hole 804 of the mixer 8 is aligned with the seventh bolt hole 302 of the reformer 3, and the mixer 8 is connected to the air preheater 2 and the reformer 3 respectively by using bolts, thus completing the installation of the mixer 8, as shown in Fig. 6 (o). Figure 10 Figure 10

[0075] As shown in Fig. 6 (p), the cross-sectional view of the fuel cell integrated thermal component is shown. The cold air entering the fuel cell integrated thermal component is divided into three paths, the main path air enters the exhaust cooler 5 through the fifth air inlet pipe 503 of the exhaust cooler 5, the branch path air 1 enters the reformer through the fourth air inlet pipe 312 of the reformer, and the branch path air 2 enters the mixer 8 through the sixth air inlet pipe 805 of the mixer 8. The flow rates of the three paths of cold air are dynamically adjusted according to the operating conditions of the fuel cell integrated thermal component. The main path air entering the exhaust cooler 5 through the fifth air inlet pipe 503 exchanges heat with the exhaust entering the exhaust cooler 5 through the exhaust inlet pipe 501, and after the heat exchange is completed, the exhaust and the air flow out of the exhaust cooler 5 through the exhaust outlet pipe 506 and the third air outlet pipe 509 respectively. Figure 11 When the fuel cell integrated thermal component operates alone, the fuel gas required by the combustor comes from the outside, and the air required by the combustor can be provided by the outside air and the hot air discharged by the fuel cell integrated thermal component alone or jointly. When the fuel cell integrated thermal component is coupled with a fuel cell or other equipment for operation, the fuel required by the combustor can be provided by the outside fuel gas and the (cell) exhaust alone or jointly, and the air required can be provided by the outside air and the hot air discharged by the cell alone or jointly.

[0076]

[0077] ​​​​​The fuel gas and air enter the combustor through the first fuel gas inlet pipe 102 and the first air inlet pipe 101 respectively, the high-temperature combustion tail gas generated by the combustion flows out from the first tail gas outlet pipe 104, and then enters the air preheater 2, at the same time, the air flowing out from the third air outlet pipe 509 of the exhaust cooler 5 enters the air preheater 2 through the air connecting pipe 6 and the second air inlet pipe 208 of the air preheater, and the combustion tail gas and the air exchange heat in the air preheater 2.

[0078] The fuel gas enters the steam generator 4 through the first fuel gas inlet pipe 403 and the second fuel gas inlet pipe 405, and the water enters the steam generator 4 through the water inlet pipe 404. The fuel gas and the water and the combustion tail gas exchange heat in the steam generator 4. After the heat exchange is completed, the combustion tail gas is discharged from the fuel cell integrated heat component through the second tail gas outlet pipe 406, and the mixed gas formed by the fuel gas and the water vapor after being fully mixed in the steam generator 4 is discharged from the steam generator 4 through the mixed gas outlet pipe 411, and then enters the reformer 3 through the mixed gas inlet pipe 304.

[0079] The high-temperature air from the second air outlet pipe 205 of the air preheater 2 and the low-temperature branch air 1 from the fourth air inlet pipe are mixed in the reformer 3 first, and then the air at moderate temperature after the mixing and the mixed gas from the steam generator 4 exchange heat in the reformer 3, and the mixed gas generates a catalytic reforming reaction to generate hydrogen-containing synthesis gas. After the heat exchange is completed, the air is discharged from the third air outlet pipe 301 of the reformer 3, and the hydrogen-containing synthesis gas generated is discharged from the fuel cell integrated heat component through the hydrogen-containing synthesis gas outlet pipe 309.

[0080] The sixth air inlet pipe 801 of the mixer 8 is connected with the first air outlet pipe 201 of the air preheater 2, and the seventh air inlet pipe 803 of the mixer 8 is connected with the third air outlet pipe 301 of the reformer 3, and the air from the air preheater 2 and the reformer 3 and the branch air 2 are mixed in the mixer 8 and then discharged from the integrated heat component through the fourth air outlet pipe 809.

[0081] The working principle of the modular fuel cell integrated heat component is as follows:

[0082] As Figure 12As shown, when the fuel cell integrated thermal component is operated alone, the fuel gas required by the burner is provided by external fuel gas, and the air required by the burner can be provided by external air and hot air discharged by the fuel cell integrated thermal component. When the fuel cell integrated thermal component is coupled with a fuel cell or the like for operation, the fuel required by the burner can be provided by external fuel gas and (cell) exhaust gas, and the air required by the burner can be provided by external air and hot air discharged by the cell. The fuel gas and the air are combusted by the burner to generate high-temperature combustion tail gas, and the high-temperature combustion tail gas successively heats the air preheater and the steam generator and then is discharged from the integrated thermal component. The fuel gas and water enter the steam generator, are heated and fully mixed in the steam generator, and then enter the reformer, and finally generate hydrogen-containing synthesis gas through catalytic reforming reaction.

[0083] The first temperature sensor monitors the combustion tail gas temperature at the outlet of the burner, which is used to monitor whether the ignition of the combustion zone is successful during startup, and to monitor the temperature of the combustion zone during operation to determine whether extinguishment or over-temperature occurs or the like. The second temperature sensor monitors the air outlet temperature T2 of the air preheater, and if T2 cannot meet the requirement, the flow of fuel gas 1 is adjusted until the value T2 of the first temperature sensor meets the requirement. The fourth temperature sensor monitors the air temperature T4 entering the reformer, and the fifth temperature sensor monitors the hydrogen-containing synthesis gas temperature T5 leaving the integrated thermal component. In the case where T1 meets the requirement, if T4 and T5 do not meet the requirement, the air 2 distribution ratio is adjusted until T4 and T5 meet the requirement. The tenth temperature sensor monitors the air temperature T10 leaving the integrated thermal component, and if T10 does not meet the requirement, the air 2 distribution ratio is adjusted until T10 meets the requirement. The third temperature sensor monitors the air temperature T3 leaving the reformer, the sixth temperature sensor monitors the tail gas temperature T6 leaving the integrated thermal component, the seventh temperature sensor monitors the exhaust gas temperature T7 leaving the integrated thermal component, the eighth temperature sensor monitors the air temperature T8 entering the air preheater, and the ninth temperature sensor monitors the combustion tail gas temperature T9 entering the steam generator, which are used to evaluate the working state of the integrated thermal component.

[0084] Although the specific embodiments of the present disclosure are described above with reference to the drawings, the present disclosure is not limited to the specific embodiments, and various modifications or changes can be made to the specific embodiments without creative labor on the basis of the technical solutions of the present disclosure.

Claims

1. A fully modular fuel cell integrated thermal component, characterized by, The integrated thermal component comprises, from inside to outside, a combustor, an air preheater, a reformer, a steam generator and an exhaust gas cooler; the combustor is arranged at the center of the modular fuel cell, the air preheater is provided with an air connecting pipe connected to the exhaust gas cooler, a tail gas connecting pipe connected to the steam generator and a mixer connected to the reformer, and the reformer is a heat exchanger with partition walls, and the heat required for the reforming process directly comes from the hot side air in the heat exchanger.

2. A fully modular fuel cell integrated hot components according to claim 1, characterized in that, The combustor is a cylindrical pipe with a stepped structure, and air and fuel gas enter the combustor, mix and burn, and then are discharged; the bottom of the combustor is a tail gas outlet, and a first temperature sensor is arranged on the tail gas outlet for monitoring the outlet temperature and working state of the combustor.

3. A fully modular fuel cell integrated thermal component according to claim 1, wherein, The air preheater is designed in a cylindrical structure, and a cylindrical space for placing the combustor is arranged at the middle position; the combustor and the air preheater are connected by bolts, and the combustion tail gas discharged by the combustor enters the air preheater and exchanges heat with the low-temperature air entering the air preheater through the partition wall.

4. A fully modular fuel cell integrated thermal component according to claim 1, wherein, The reformer is in close contact with the air preheater and is fixed and limited by bolts, the high-temperature air formed after heat exchange of the air preheater enters the reformer and is premixed with the cold air entering the reformer at the bottom of the reformer, and then exchanges heat with the mixed gas entering the reformer through the partition wall.

5. A fully modular fuel cell integrated hot components according to claim 1, wherein, The steam generator is arranged outside the reformer and connected by bolts, and the mixed gas formed after sufficient mixing of fuel gas and water vapor in the steam generator enters the reformer through a pipeline.

6. A fully modular fuel cell integrated hot components according to claim 1, wherein, The exhaust gas cooler is arranged outside the steam generator and connected by bolts, and is used for heat exchange of cold air and cell exhaust gas; after heat exchange, the cell exhaust gas is discharged from the exhaust gas outlet pipe of the integrated thermal component, and the cold air is discharged from the exhaust gas cooler through a third air outlet pipe.

7. A fully modular fuel cell integrated hot components according to claim 1, wherein, The exhaust gas cooler is connected to the air preheater through an air connecting pipe, and is used for circulation of air between the exhaust gas cooler and the air preheater.

8. A fully modular fuel cell integrated hot components according to claim 1, wherein, The steam generator is connected to the air preheater through a tail gas connecting pipe, and is used for circulation of tail gas between the steam generator and the air preheater.

9. A fully modular fuel cell integrated hot components according to claim 1, wherein, The integrated thermal component further comprises a mixer for mixing air at different temperatures, and the mixer is arranged at the top of the integrated thermal component and connected to the air preheater and the reformer by bolts, respectively.

10. A fully modular fuel cell integrated hot components according to claim 1, wherein, The integrated thermal component adopts a sleeve type structure, which is nested layer by layer to reduce the length of the pipeline and reduce pressure loss.

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