CN217822896U - Hot zone structure of solid oxide fuel cell system - Google Patents
Hot zone structure of solid oxide fuel cell system Download PDFInfo
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- CN217822896U CN217822896U CN202221679111.6U CN202221679111U CN217822896U CN 217822896 U CN217822896 U CN 217822896U CN 202221679111 U CN202221679111 U CN 202221679111U CN 217822896 U CN217822896 U CN 217822896U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model provides a hot area structure of a solid oxide fuel cell system, which comprises two electric pile modules, a reformer, a catalytic burner, a pre-heat exchanger, an anode heat exchanger and two air heat exchangers, wherein the reformer, the catalytic burner, the pre-heat exchanger, the anode heat exchanger and the two air heat exchangers are positioned between the two electric pile modules; the anti-leakage device is arranged above the air heat exchanger, so that leaked fuel gas is treated in time, and the safety is improved; the reformer, the catalytic combustor and the two air heat exchangers are communicated through pipelines from bottom to top in sequence, high-temperature gas circulates from bottom to top, and gas circulation resistance is small.
Description
Technical Field
The utility model belongs to the technical field of solid oxide fuel cell technique and specifically relates to a hot zone structure of solid oxide fuel cell system.
Background
A Solid Oxide Fuel Cell (SOFC) is an all-Solid-state Fuel Cell that efficiently converts chemical energy of various Fuel gases (natural gas, landfill gas, coal gas, methanol, etc.) into electrical energy at high temperatures. The method has the advantages of no use of noble metal catalysts, high fuel selectivity, high waste heat temperature, high ignition efficiency and the like, and is very suitable for application scenes of cogeneration, distributed power generation, main (standby) power stations and the like.
In the current high-power SOFC system, an electric pile module is usually formed by connecting dozens of single electric piles in series and parallel. The temperature of the hot zone is about 300-800 ℃, the electrochemical reaction of the galvanic pile, the heat exchange of the fuel gas and the reforming reaction are all realized in the hot zone, and the working temperature of the galvanic pile module and other parts also has difference. If the integration degree of the hot area structure is low, the spatial layout of the pipeline for fuel gas circulation is unreasonable, so that the gas flow resistance is large, the heating efficiency is low, the fuel utilization rate is low, the reforming heat exchange efficiency of the fuel gas is directly influenced, and the power generation efficiency of the SOFC system is further influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a hot zone structure of a solid oxide fuel cell system.
In order to achieve the above purpose, the utility model discloses a realize through following technical scheme:
a hot zone structure of a solid oxide fuel cell system comprises two electric pile modules, a reformer, a catalytic combustor, a pre-heat exchanger, an anode heat exchanger and two air heat exchangers, wherein the reformer, the catalytic combustor, the pre-heat exchanger, the anode heat exchanger and the two air heat exchangers are positioned between the two electric pile modules, a leakage-proof device is arranged above the air heat exchangers, the air heat exchangers are communicated with the electric pile modules through an air inlet channel, the electric pile modules are communicated with the reformer through an air outlet channel, the electric pile modules are wrapped between the air inlet channel and the air outlet channel, the reformer, the catalytic combustor and the two air heat exchangers are communicated through pipelines from bottom to top in sequence, the pre-heat exchanger, the reformer, the anode heat exchanger and the two electric pile modules are communicated in sequence, the electric pile modules are further communicated with the anode heat exchanger through a fuel outlet pipeline, and the anode heat exchanger is further communicated with the catalytic combustor and the pre-heat exchanger through a first pipeline and a second pipeline respectively.
Further, the air inlet channel and the air outlet channel are both of wall-body structures and respectively comprise a transverse part and a vertical part which are communicated, and the transverse part of the air inlet channel is positioned at the upper end of the vertical part and is communicated with the air heat exchanger; the transverse part of the air outlet channel is positioned at the lower end of the vertical part of the air outlet channel and is communicated with the reformer; and one side of the vertical part facing the galvanic pile module is provided with an air vent.
Furthermore, a mixer communicated with the reformer is arranged at the lower end of the reformer, and two sides of the mixer are respectively communicated with the two air outlet channels through pipelines.
Further, the leakage prevention device comprises an air suction cover, and a fuel concentration sensor and a fan which are arranged on the air suction cover.
Furthermore, the reformer and the catalytic combustor are communicated through a third pipeline, a through hole is formed in the middle of the third pipeline, the middle of the first pipeline penetrates through the through hole, and a second pipeline communicated with the catalytic combustor is arranged on the middle of the first pipeline.
Furthermore, the catalytic combustor is respectively communicated with the two air heat exchangers through a three-way pipe.
Furthermore, a gas distribution plate is arranged between the electric pile module and the air outlet channel, and the anode heat exchanger is communicated with the gas distribution plate through a fuel supply pipeline.
Furthermore, the air inlet channel, the air outlet channel, the fuel outlet pipeline, the first pipeline and the second pipeline are made of one or two of high-temperature-resistant alloy hard pipes and high-temperature-resistant corrugated pipes.
Furthermore, the device also comprises a base, wherein cushion blocks for supporting the two electric pile modules are arranged on two sides of the upper end surface of the base, and three supports for respectively supporting and fixing the anode heat exchanger, the reformer and the pre-heat exchanger are arranged in the middle of the upper end surface of the base.
The utility model has the advantages that: the reformer, the catalytic combustor and the two air heat exchangers are sequentially communicated through pipelines from bottom to top, high-temperature gas flows from bottom to top, and the gas flow resistance is small; the reformer, the catalytic combustor, the pre-heat exchanger, the anode heat exchanger and the two air heat exchangers are arranged between the two electric pile modules, and the electric pile modules are wrapped between the air inlet channel and the air outlet channel, so that the whole design structure is compact, the starting temperature rise rate is high, the heat exchange effect is good, and the fuel utilization rate is high; the anti-leakage device is arranged to timely process leaked fuel gas, and safety is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention;
FIG. 3 is a schematic view of the present invention;
FIG. 4 is a schematic view of the principle flow of the present invention;
in the figure: 1. an air heat exchanger; 2. an air intake passage; 3. a stack module; 4. an air outlet channel; 5. a reformer; 6. a catalytic burner; 7. a pre-heat exchanger; 8. an anode heat exchanger; 9. an air intake cover; 10. a fuel concentration sensor; 11. a fan; 12. a fuel supply conduit; 13. a three-way pipe; 14. a first conduit; 15. a third pipeline; 16. a mixer; 17. a fuel outlet pipe; 18. a cushion block; 19. a base; 20. and (4) a bracket.
Detailed Description
The present invention is described in detail below with reference to the attached drawings:
as shown in fig. 1-4, a hot zone structure of a solid oxide fuel cell system comprises two stack modules 3, a reformer 5, a catalytic burner 6, a pre-heat exchanger 7, an anode heat exchanger 8 and two air heat exchangers 1, wherein the reformer 5, the catalytic burner 6, the pre-heat exchanger 7, the anode heat exchanger 8 and the two air heat exchangers 1 are located between the two stack modules 3, the air heat exchanger 1 is communicated with the stack modules 3 through an air inlet channel 2, the stack modules 3 are communicated with the reformer 5 through an air outlet channel 4, the air inlet channel 2 and the air outlet channel 4 are both in a wall structure and comprise a transverse part and a vertical part which are communicated, the transverse part of the air inlet channel 2 is located at the upper end of the vertical part and is communicated with the air heat exchanger 1, the transverse part of the air outlet channel 4 is located at the lower end of the vertical part and is communicated with the reformer 5, and the stack modules 3 are located between the two vertical parts, and the whole design structure is compact, the temperature rise rate is fast, the heat exchange effect is good, and the fuel utilization rate is high; air vents are arranged on one sides, facing the electric pile modules 3, of the vertical parts of the air inlet channel 2 and the air outlet channel 4, air sequentially circulates from the air heat exchanger 1, the transverse part of the air inlet channel 2, the vertical part of the air inlet channel 2, the electric pile modules 3, the vertical part of the air outlet channel 4 and the transverse part of the air outlet channel 4 and flows from top to bottom, and therefore the electric pile modules 3 and the air fully react;
the lower end of the reformer 5 is provided with a mixer 16 communicated with the reformer 5, and two sides of the mixer 16 are respectively communicated with the transverse parts of the two air outlet channels 4 through pipelines, so that air passing through the galvanic pile firstly enters the mixer 16 to be mixed and then enters the reformer 5, the temperature of the air from the two galvanic pile modules 3 is firstly mixed at the same temperature in one step, and the reformer 5 is prevented from being damaged by cold-hot air;
the reformer 5, the catalytic combustor 6 and the two air heat exchangers 1 are communicated through pipelines from bottom to top in sequence, high-temperature gas circulates from bottom to top, and the gas circulation resistance is small; the catalytic combustor 6 is respectively communicated with the two air heat exchangers 1 through a three-way pipe 13, so that gas from the catalytic combustor 6 is uniformly distributed in the two air heat exchangers 1, and the heat exchange effect of the two air heat exchangers 1 is uniform and stable;
the pre-heat exchanger 7, the reformer 5, the anode heat exchanger 8 and the two electric pile modules 3 are sequentially communicated, and the electric pile modules 3 are also communicated with the anode heat exchanger 8 through a fuel gas outlet pipeline 17; a gas distribution plate is arranged between the electric pile module 3 and the air outlet channel 4, the anode heat exchanger 8 is communicated with the gas distribution plate through a fuel supply pipeline 12, namely, fuel gas sequentially enters the anode heat exchanger 8 from the pre-heat exchanger 7 and the reformer 5, then enters the gas distribution plate from the fuel supply pipeline 12, and then enters the electric pile module 3 from the gas distribution plate to be supplied to each electric pile for reaction, wherein the gas distribution plate is the prior art, and the reacted gas enters the anode heat exchanger 8 through a fuel outlet pipeline 17 to supply heat for heat exchange, so that the temperature of the fuel gas entering the electric pile module 3 is increased, the reaction rate of the electric pile is accelerated, and the utilization rate of the fuel is also increased;
the anode heat exchanger 8 is also respectively communicated with the catalytic combustor 6 and the pre-heat exchanger 7 through a first pipeline 14 and a second pipeline, the reformer 5 is communicated with the catalytic combustor 6 through a third pipeline 15, a through hole is formed in the middle of the third pipeline 15, the middle of the first pipeline 14 penetrates through the through hole, and the second pipeline communicated with the catalytic combustor 6 is arranged in the middle of the first pipeline 14, namely, the gas entering the catalytic combustor 6 from the reformer 5 and the gas entering the catalytic combustor 6 from the anode heat exchanger 8 or the gas entering the pre-heat exchanger 7 from the anode heat exchanger 8 exchange heat firstly and then enter the catalytic combustor 6 or the pre-heat exchanger 7, so that the temperature of the gas entering the catalytic combustor 6 is uniform, the catalytic combustor 6 is prevented from being damaged, and the heat exchange effect of the pre-heat exchanger 7 is enhanced;
the top of air heat exchanger 1 is equipped with prevents leaking the device, prevent leaking the device including cover 9 and the fuel concentration sensor 10 and the fan 11 of setting on cover 9 of breathing in, air heat exchanger 1 is in the top of whole structure, cover 9 covers the top at whole structure of breathing in promptly, if there is the phenomenon that fuel gas reveals to appear, gas can be through cover 9 of breathing in, fuel concentration sensor 10 can monitor the gas leakage the very first time and send the warning this moment, simultaneously through controlling fan 11 with gas outgoing, the security of whole structure has been improved.
The hot zone structure of the solid oxide fuel cell system also comprises a base 19, wherein cushion blocks 18 for supporting the two electric pile modules 3 are arranged on two sides of the upper end surface of the base 19, and three supports 20 for respectively supporting and fixing the anode heat exchanger 8, the reformer 5 and the pre-heat exchanger 7 are arranged in the middle of the upper end surface of the base 19, so that the structure is not in direct contact with the ground, the influence of quick heat dissipation of the ground on the whole system is avoided, and the damage to the ground caused by high temperature of the system is also avoided.
The air inlet channel 2, the air outlet channel 4, the fuel outlet pipeline 17, the first pipeline 14, the second pipeline and the pipeline of the whole structure are one or two of a high-temperature-resistant alloy hard pipe and a high-temperature-resistant corrugated pipe, so that the service life of the pipeline is long, the replacement of the pipeline is reduced, the cost is reduced, and the production efficiency is improved.
The utility model discloses a theory of operation does:
as shown in fig. 1-4, air flows sequentially from the air heat exchanger 1, the transverse portion of the air inlet channel 2, the vertical portion of the air inlet channel 2, the electric pile module 3, the vertical portion of the air outlet channel 4, the transverse portion of the air outlet channel 4, the mixer 16, the reformer 5, the third pipeline 15, the catalytic burner 6, the three-way pipe 13 and the air heat exchanger 1, that is, the air is preheated in the air heat exchanger 1, then enters the electric pile module 3 for participating in the addition reaction, then enters the catalytic burner 6 through the reformer 5 for combustion, and finally enters the air heat exchanger 1 for providing heat exchange heat for new air;
the fuel gas flows through the pre-heat exchanger 7, the reformer 5, the anode heat exchanger 8, the fuel supply pipeline 12, the gas distribution plate, the electric pile module 3, the fuel gas outlet pipeline 17, the anode heat exchanger 8, the first pipeline 14, the pre-heat exchanger 7 or the second pipeline, the catalytic burner 6 and the air heat exchanger 1 in sequence, namely the fuel gas firstly passes through the heat exchange and temperature rise of the pre-heat exchanger 7, the reformer 5 and the anode heat exchanger 8 and then enters the electric pile module 3 to react with the electric pile, and after the heat of heat exchange is given to the reactant gas by the anode heat exchanger 8, the reactant gas directly enters the pre-heat exchanger 7 to give the heat of heat exchange, and after entering the catalytic burner 6 to burn, the reactant gas enters the air heat exchanger 1 to provide the heat of heat exchange for new air.
The above is only the preferred embodiment of the present invention, and not the patent protection scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings of the present invention can be directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a hot zone structure of solid oxide fuel cell system, characterized in that, including two electric pile modules (3) and be located reformer (5) between two electric pile modules (3), catalytic combustor (6), preheat exchanger (7), anode heat exchanger (8) and two air heat exchanger (1), air heat exchanger (1) top is equipped with prevents leaking the device, air heat exchanger (1) is through air inlet channel (2) and electric pile module (3) intercommunication, electric pile module (3) are through air outlet channel (4) and reformer (5) intercommunication, electric pile module (3) are wrapped up between air inlet channel (2) and air outlet channel (4), reformer (5), catalytic combustor (6), two air heat exchanger (1) loop through the pipeline intercommunication from bottom to top, preheat exchanger (7), reformer (5), anode heat exchanger (8), two electric pile modules (3) communicate in proper order, electric pile module (3) still communicate with anode heat exchanger (8) through fuel outlet channel (17), anode heat exchanger (8) still communicates with second heat exchanger (7) and catalytic combustor (7) respectively through first pipeline (14).
2. A hot-zone structure of a solid oxide fuel cell system according to claim 1, characterized in that the air inlet channel (2) and the air outlet channel (4) are both wall-like structures, both comprising communicating lateral and vertical portions, the lateral portion of the air inlet channel (2) being located at the upper end of its vertical portion and communicating with the air heat exchanger (1); the transverse part of the air outlet channel (4) is positioned at the lower end of the vertical part and is communicated with the reformer (5); and a vent is arranged on one side of the vertical part facing the galvanic pile module (3).
3. A hot zone structure of a solid oxide fuel cell system according to claim 1, characterized in that the lower end of the reformer (5) is provided with a mixer (16) communicated therewith, and both sides of the mixer (16) are respectively communicated with the two air outlet channels (4) through pipes.
4. A hot-zone structure of a solid oxide fuel cell system according to claim 1, characterized in that the leakage preventing means comprises an air intake hood (9) and a fuel concentration sensor (10) and a fan (11) arranged on the air intake hood (9).
5. A hot zone structure of a solid oxide fuel cell system according to claim 1, characterized in that the reformer (5) and the catalytic burner (6) are communicated through a third pipe (15), the third pipe (15) has a through hole in the middle, the first pipe (14) has a through hole in the middle, and the first pipe (14) has a second pipe in the middle, which is communicated with the catalytic burner (6).
6. A hot zone structure of a solid oxide fuel cell system according to claim 1, characterized in that the catalytic burner (6) is in communication with two air heat exchangers (1) respectively by means of a tee (13).
7. A hot zone structure of a solid oxide fuel cell system according to claim 1, characterized in that a gas distribution plate is provided between the stack module (3) and the air outlet channel (4), and the anode heat exchanger (8) is in communication with the gas distribution plate through a fuel supply pipe (12).
8. The hot zone structure of solid oxide fuel cell system according to claim 1, characterized in that the air inlet channel (2), the air outlet channel (4), the fuel outlet pipe (17), the first pipe (14), the second pipe are one or both of a high temperature resistant alloy hard pipe and a high temperature resistant corrugated pipe.
9. A hot-zone structure of solid oxide fuel cell systems according to claim 1, characterized by further comprising a base (19), wherein two sides of the upper end surface of the base (19) are provided with spacers (18) for supporting two stack modules (3), and the middle of the upper end surface of the base (19) is provided with three supports (20) for supporting and fixing the anode heat exchanger (8), the reformer (5) and the pre-heat exchanger (7), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221679111.6U CN217822896U (en) | 2022-07-01 | 2022-07-01 | Hot zone structure of solid oxide fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221679111.6U CN217822896U (en) | 2022-07-01 | 2022-07-01 | Hot zone structure of solid oxide fuel cell system |
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| Publication Number | Publication Date |
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| CN217822896U true CN217822896U (en) | 2022-11-15 |
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| CN202221679111.6U Active CN217822896U (en) | 2022-07-01 | 2022-07-01 | Hot zone structure of solid oxide fuel cell system |
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- 2022-07-01 CN CN202221679111.6U patent/CN217822896U/en active Active
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