CN212298989U - Natural gas heating furnace system applied to molten carbonate fuel cell - Google Patents
Natural gas heating furnace system applied to molten carbonate fuel cell Download PDFInfo
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- CN212298989U CN212298989U CN202021232279.3U CN202021232279U CN212298989U CN 212298989 U CN212298989 U CN 212298989U CN 202021232279 U CN202021232279 U CN 202021232279U CN 212298989 U CN212298989 U CN 212298989U
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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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 pair of be applied to molten carbonate fuel cell's natural gas heating furnace system, including natural gas air inlet unit, fuel cell system, natural gas heating furnace system, catalytic combustor and fire tube, the utility model discloses a fuel cell and natural gas heating furnace system, the natural gas is regarded as the gas source of fuel cell and heating furnace simultaneously, need not external power supply and heats fuel cell, and this structure is with fuel cell system and fuel cell's heating system, and natural gas heating furnace system carries out the coupling promptly, further improves comprehensive energy utilization efficiency.
Description
Technical Field
The utility model relates to a hydrogen energy and fuel cell power generation technical field, in particular to be applied to melting carbonate fuel cell's natural gas heating furnace system.
Background
With the continuous development of hydrogen energy and fuel cell power generation technologies, new energy technology has been demonstrated more and more, and fuel cell power generation technology is continuously paid attention at home and abroad as a novel power generation technology and is demonstrated in some places. The molten carbonate fuel cell is a high-temperature fuel cell power generation device, has wide fuel source and high energy conversion efficiency, and can realize the capture of carbon dioxide. The power generation technology of the molten carbonate fuel cell can be used for designing and developing a cogeneration power generation system and the like for different occasions. In the current domestic power generation system device, the heating of the fuel cell generally adopts electric heating and natural gas heating, and the heating system and the electric pile operation system are mutually independent and cannot be coupled.
Disclosure of Invention
An object of the utility model is to provide a be applied to molten carbonate fuel cell's natural gas heating furnace system because heating system and galvanic pile operating system mutual independence can't reach the coupling, has the defect that the utilization ratio of the energy is low.
In order to achieve the above purpose, the utility model discloses a technical scheme is:
the utility model provides a natural gas heating furnace system applied to molten carbonate fuel cell, which comprises a natural gas inlet unit, a fuel cell system, a natural gas heating furnace system, a catalytic burner and a fire tube, wherein, the gas outlet of the natural gas inlet unit is divided into two paths, one path is mixed with water and then is connected with the gas inlet of a heat exchange unit; a high-temperature gas outlet of the heat exchange unit is connected with an anode inlet of the fuel cell system; an anode tail gas outlet of the fuel cell system is connected with a gas inlet of the catalytic combustor; an air inlet is arranged on the catalytic combustor; the gas outlet of the catalytic combustor is connected with the cathode inlet of the fuel cell system; the cathode outlet of the fuel cell system is connected with the gas inlet of the heat exchange unit;
the other path of gas outlet of the natural gas inlet unit is connected with the gas inlet of the heat exchange unit; a high-temperature gas outlet of the heat exchange unit is connected with a gas inlet of the fire tube; an air inlet is formed in the fire tube;
and the gas outlet of the fire tube is connected with a natural gas inlet of a natural gas heating furnace system.
Preferably, the heat exchange unit comprises a first heat exchanger and a second heat exchanger, wherein the outlet of the natural gas and water mixing unit is connected with the gas inlet of the first heat exchanger, and the high-temperature gas outlet of the first heat exchanger is connected with the anode inlet of the fuel cell system; the other path of gas outlet of the natural gas inlet unit is connected with a gas inlet of a second heat exchanger, and a high-temperature gas outlet of the second heat exchanger is connected with a gas inlet of the fire tube; and the medium outlet of the first heat exchanger is connected with the medium inlet of the second heat exchanger.
Preferably, the low-temperature gas outlet of the second heat exchanger is connected with a tail gas exhaust pipe.
Preferably, the power output end of the fuel cell system is connected with an external device.
Preferably, the air inlet provided on the catalytic burner and the air inlet provided on the fire tube are both connected to an air unit.
Preferably, the tail gas outlet of the natural gas heating furnace system is connected with the gas inlet of the catalytic burner.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a pair of be applied to molten carbonate fuel cell's natural gas heating furnace system adopts fuel cell and natural gas heating furnace system, and the natural gas is as the gas source of fuel cell and heating furnace simultaneously, need not external power supply and heats fuel cell, and this structure is with fuel cell system and fuel cell's heating system, and natural gas heating furnace system carries out the coupling promptly, further improves comprehensive energy utilization efficiency.
Furthermore, the tail gas carbon dioxide of the natural gas heating furnace can be used as a source of cathode gas of the fuel cell, so that the carbon dioxide can be recycled, the carbon emission is reduced, and the comprehensive utilization of energy is realized.
Drawings
Fig. 1 is a schematic diagram of a system structure according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a natural gas heating furnace system for molten carbonate fuel cell, including natural gas inlet unit 1, first heat exchanger 2, second heat exchanger 3, fuel cell system 4 and natural gas heating furnace system 5, wherein, the gas outlet of natural gas inlet unit 1 is divided into two routes, connects the air inlet of first heat exchanger 2 after mixing with water all the way; the high-temperature gas outlet of the first heat exchanger 2 is connected with the anode inlet of the fuel cell system 4; an anode tail gas outlet of the fuel cell system 4 is connected with a gas inlet of the catalytic combustor 6; the catalytic combustor 6 is provided with an air inlet; the gas outlet of the catalytic combustor 6 is connected with the cathode inlet of the fuel cell system 4; the cathode outlet of the fuel cell system 4 is connected with the gas inlet of the first heat exchanger 2.
The other path of gas outlet of the natural gas inlet unit 1 is connected with the gas inlet of the second heat exchanger 3; a high-temperature gas outlet of the second heat exchanger 3 is connected with a gas inlet of the fire tube 7; an air inlet is arranged on the fire tube 7.
And a gas outlet of the fire tube 7 is connected with a natural gas inlet of the natural gas heating furnace system 5.
And a tail gas outlet of the natural gas heating furnace system 5 is connected with a gas inlet of the catalytic combustor 6.
The low-temperature gas outlet of the first heat exchanger 2 is connected with the gas inlet of the second heat exchanger 3.
And a low-temperature gas outlet of the second heat exchanger 3 is connected with a tail gas exhaust pipe.
And the electric energy output end of the fuel cell system 4 is connected with external equipment.
The fuel cell system 4 is arranged in a natural gas heating furnace system 5; and heating the galvanic pile by using natural gas.
The fuel cell system 4 is a natural gas internal reforming type fuel cell.
The utility model discloses a theory of operation is:
the natural gas inlet unit 1 is respectively connected with the fuel cell system 4 and the natural gas heating furnace system 5, firstly, the natural gas is mixed with water and then is connected with the first heat exchanger 2, the gas after heat exchange is connected with the anode gas inlet of the fuel cell system 4, at this time, the internal reforming reaction of the natural gas occurs in the anode, the reforming reaction is,
the hydrogen-rich gas after reaction participates in the anode reaction of the fuel cell; the anode tail gas of the fuel cell system 4 is connected with the catalytic combustor 6, the air unit 8 is connected with the catalytic combustor 6, the gas which does not participate in the reaction in the tail gas is subjected to catalytic combustion and then is connected with the cathode gas inlet of the fuel cell system 4, at the moment, the gas mainly comprises air and carbon dioxide, the air and the carbon dioxide participate in the cathode reaction of the fuel cell system 4, and the tail gas after the reaction exchanges heat with the natural gas in the first heat exchanger 2.
The rest natural gas enters the second heat exchanger 3 to be connected, the heated gas and air are mixed to enter the fire tube 7 to be ignited, the ignited gas enters the gas inlet on the natural gas heating furnace system 5, the internal pipeline of the natural gas heating furnace system 5 is heated to exchange heat with the heat-carrying medium to realize the heating function of the fuel cell stack, the natural gas heating furnace system 5 is connected with the catalytic combustor 6, and carbon dioxide generated in the process of catalytic combustion and heating of unreacted natural gas enters the cathode gas inlet of the fuel cell system 4 to realize the recycling of the carbon dioxide.
Claims (6)
1. A natural gas heating furnace system applied to a molten carbonate fuel cell is characterized by comprising a natural gas inlet unit (1), a fuel cell system (4), a natural gas heating furnace system (5), a catalytic combustor (6) and a fire tube (7), wherein a gas outlet of the natural gas inlet unit (1) is divided into two paths, and one path is mixed with water and then connected with a gas inlet of a heat exchange unit; a high-temperature gas outlet of the heat exchange unit is connected with an anode inlet of the fuel cell system (4); an anode tail gas outlet of the fuel cell system (4) is connected with a gas inlet of the catalytic combustor (6); an air inlet is arranged on the catalytic combustor (6); the gas outlet of the catalytic combustor (6) is connected with the cathode inlet of the fuel cell system (4); the cathode outlet of the fuel cell system (4) is connected with the gas inlet of the heat exchange unit;
the other path of gas outlet of the natural gas inlet unit (1) is connected with the gas inlet of the heat exchange unit; a high-temperature gas outlet of the heat exchange unit is connected with a gas inlet of the fire tube (7); an air inlet is formed in the fire tube (7);
and a gas outlet of the fire tube (7) is connected with a natural gas inlet of the natural gas heating furnace system (5).
2. The natural gas heating furnace system applied to the molten carbonate fuel cell according to claim 1, wherein the heat exchange unit comprises a first heat exchanger (2) and a second heat exchanger (3), wherein an outlet of the natural gas and water mixing unit is connected with a gas inlet of the first heat exchanger (2), and a high-temperature gas outlet of the first heat exchanger (2) is connected with an anode inlet of the fuel cell system (4); the other path of gas outlet of the natural gas inlet unit (1) is connected with a gas inlet of the second heat exchanger (3), and a high-temperature gas outlet of the second heat exchanger (3) is connected with a gas inlet of the fire tube (7); and a medium outlet of the first heat exchanger (2) is connected with a medium inlet of the second heat exchanger (3).
3. A natural gas heating furnace system applied to a molten carbonate fuel cell according to claim 2, wherein the low-temperature gas outlet of the second heat exchanger (3) is connected with a tail gas exhaust pipe.
4. The natural gas heating furnace system applied to the molten carbonate fuel cell as claimed in claim 1, wherein the electric energy output end of the fuel cell system (4) is connected with an external device.
5. A natural gas furnace system for molten carbonate fuel cells according to claim 1, wherein the air inlet provided on the catalytic burner (6) and the air inlet provided on the firebox (7) are connected to an air unit (8).
6. The natural gas heating furnace system applied to the molten carbonate fuel cell according to claim 1, wherein a tail gas outlet of the natural gas heating furnace system (5) is connected with a gas inlet of the catalytic burner (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021232279.3U CN212298989U (en) | 2020-06-29 | 2020-06-29 | Natural gas heating furnace system applied to molten carbonate fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021232279.3U CN212298989U (en) | 2020-06-29 | 2020-06-29 | Natural gas heating furnace system applied to molten carbonate fuel cell |
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| CN212298989U true CN212298989U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000854A1 (en) * | 2020-06-29 | 2022-01-06 | 中国华能集团清洁能源技术研究院有限公司 | Natural-gas heating furnace system and method applied to molten carbonate fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022000854A1 (en) * | 2020-06-29 | 2022-01-06 | 中国华能集团清洁能源技术研究院有限公司 | Natural-gas heating furnace system and method applied to molten carbonate fuel cell |
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