CN212725394U - Thermoelectric combined supply device for solid oxide fuel cell - Google Patents
Thermoelectric combined supply device for solid oxide fuel cell Download PDFInfo
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- CN212725394U CN212725394U CN202021588166.7U CN202021588166U CN212725394U CN 212725394 U CN212725394 U CN 212725394U CN 202021588166 U CN202021588166 U CN 202021588166U CN 212725394 U CN212725394 U CN 212725394U
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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 discloses a solid oxide fuel cell cogeneration device, which comprises a solid oxide fuel cell and a water tank, wherein one end of a heat exchange tube is arranged in the solid oxide fuel cell, a circulating water pump is arranged on the heat exchange tube, and the other end of the heat exchange tube is arranged in a constant temperature water tank and used for thermal circulation; the outlet of the reaction product of the solid oxide fuel cell is connected with a combustor, and the combustor is sequentially connected with a first heat exchanger, a second heat exchanger and a constant-temperature water tank for supplying heat; and the electric energy output end of the solid oxide fuel cell is connected with a storage battery for supplying power. The utility model discloses can collect entire system's internal energy as far as possible, act on inside and outside the system, reach the energy loss that reduces the system, developments are supplied as required, and the energy saving's purpose has saved the energy consumption expense of cogeneration system greatly.
Description
Technical Field
The utility model belongs to the solid oxide fuel cell field relates to the cogeneration, concretely relates to solid oxide fuel cell cogeneration device.
Background
Solid Oxide Fuel Cells (SOFC) belong to the third generation of Fuel cells, and are all-Solid-state chemical power generation devices that directly convert chemical energy stored in Fuel and oxidant into electrical energy at medium and high temperatures with high efficiency and environmental friendliness. Is generally recognized as a fuel cell that will be widely used in the future as a Proton Exchange Membrane Fuel Cell (PEMFC).
Among all fuel cells, the SOFC operates at the highest temperature and belongs to a high-temperature fuel cell. In recent years, distributed power plants have become an important part of the world's energy supply due to their advantages such as low cost, high maintainability, etc. The exhaust gas generated by the SOFC has high temperature and high utilization value, can provide heat required by natural gas reforming, can also be used for producing steam to form a combined heat and power system, can form combined circulation with a gas turbine, and is very suitable for distributed power generation. The combined power generation system composed of the fuel cell, the gas turbine, the steam turbine and the like not only has higher power generation efficiency, but also has low pollution environmental benefits.
The early developed SOFC has higher working temperature, and is generally 800-1000 ℃. Scientists have successfully developed intermediate-temperature solid oxide fuel cells, which typically operate at temperatures around 800 ℃. Scientists in some countries are also striving to develop low temperature SOFC, which can be operated at a temperature of 650-700 ℃. Further reduction of the operating temperature brings more possibilities for SOFC applications, but still suffers from a number of problems such as: (a) the starting time is long. The operation temperature is 650-1000 ℃, so that the temperature rise rate cannot be too high for protecting the battery assembly; (b) temperature control of the battery assembly is difficult. The working temperature is difficult to control in the most appropriate interval due to overhigh working temperature; (c) the energy loss is large. The too high working temperature of the SOFC results in the loss of much energy in the form of internal energy, and the energy conversion rate needs to be improved.
Disclosure of Invention
The utility model aims to provide a solid oxide fuel cell cogeneration device, solve the insufficient technical problem of solid oxide fuel cell energy utilization among the prior art, not enough to prior art exist.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a solid oxide fuel cell cogeneration device comprises a solid oxide fuel cell and a constant temperature water tank, wherein one end of a heat exchange tube is arranged in the solid oxide fuel cell, a circulating water pump is arranged on the heat exchange tube, and the other end of the heat exchange tube is arranged in the constant temperature water tank and used for heat circulation;
the fuel mixer also comprises an anode fuel input pipe, wherein the anode fuel input pipe is sequentially connected with a fuel compressor, a mixer and a first heat exchanger, and the first heat exchanger is connected with an anode fuel inlet of the solid oxide fuel cell; the constant-temperature water tank is connected with a steam generator, and the steam generator is connected with the mixer;
the solid oxide fuel cell system also comprises a cathode fuel input pipe, wherein the cathode fuel input pipe is sequentially connected with an air compressor and a second heat exchanger, and the second heat exchanger is connected with a cathode fuel inlet of the solid oxide fuel cell;
the outlet of the reaction product of the solid oxide fuel cell is connected with a combustor, and the combustor is sequentially connected with a first heat exchanger, a second heat exchanger and a constant-temperature water tank for supplying heat;
and the electric energy output end of the solid oxide fuel cell is connected with a storage battery for supplying power.
The utility model discloses still have following technical characteristic:
the storage battery is also connected with a DC/AC converter.
The constant temperature water tank is also provided with a constant temperature heater.
The storage battery is also connected with the constant temperature heater for supplying power.
The constant temperature water tank is also connected with an external heat exchanger and used for outputting surplus heat.
Compared with the prior art, the utility model, following technological effect has:
(I) the utility model discloses can collect entire system's internal energy as far as possible, act on inside and outside the system, reach the energy loss that reduces the system, developments are supplied as required, and the energy saving's purpose has saved the energy consumption expense of combined heat and power system greatly.
(II) the utility model discloses safe and reliable, with low costs, be fit for promoting on a large scale and structural design is simple, ingenious, and the effect is showing.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
The meaning of the individual reference symbols in the figures is: 1-solid oxide fuel cell, 2-constant temperature water tank, 3-heat exchange tube, 4-circulating water pump, 5-external heat exchanger, 6-anode fuel input tube, 7-cathode fuel input tube, 8-fuel compressor, 9-mixer, 10-first heat exchanger, 11-steam generator, 12-air compressor, 13-second heat exchanger, 14-burner, 15-accumulator, 16-DC/AC converter, 17-constant temperature heater; 18-a microcontroller, 19-a temperature sensor, 20-a first electrically operated valve, 21-a second electrically operated valve;
101-anode fuel inlet, 102-cathode fuel inlet, 103-reaction product outlet, 104-electrical energy output.
The following detailed description of the present invention will be made with reference to the accompanying drawings and examples.
Detailed Description
It should be noted that all the components in the present invention, unless otherwise specified, are all the components known in the art.
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
Example 1:
according to the technical scheme, as shown in fig. 1, the embodiment provides a cogeneration device for a solid oxide fuel cell, which comprises a solid oxide fuel cell 1 and a constant temperature water tank 2, wherein one end of a heat exchange pipe 3 is installed in the solid oxide fuel cell 1, a circulating water pump 4 is arranged on the heat exchange pipe 3, and the other end of the heat exchange pipe 3 is installed in the constant temperature water tank 2 for heat circulation;
the fuel cell system further comprises an anode fuel input pipe 6, wherein the anode fuel input pipe 6 is sequentially connected with a fuel compressor 8, a mixer 9 and a first heat exchanger 10, and the first heat exchanger 10 is connected with an anode fuel inlet 101 of the solid oxide fuel cell 1; the constant temperature water tank 2 is connected with a steam generator 11, and the steam generator 11 is connected with the mixer 9;
the solid oxide fuel cell further comprises a cathode fuel input pipe 7, wherein an air compressor 12 and a second heat exchanger 13 are sequentially connected to the cathode fuel input pipe 7, and the second heat exchanger 13 is connected with a cathode fuel inlet 102 of the solid oxide fuel cell 1;
the reaction product outlet 103 of the solid oxide fuel cell 1 is connected with a combustor 14, and the combustor 14 is sequentially connected with a first heat exchanger 10, a second heat exchanger 13 and a constant temperature water tank 2 for supplying heat;
the power output 104 of the solid oxide fuel cell 1 is connected to the battery 15 for power supply.
As a preferable mode of the present embodiment, the storage battery 15 is further connected to a DC/AC converter 16. It is convenient to convert the direct current in the battery 15 into alternating current.
As a preferable scheme of this embodiment, the constant temperature water tank 2 is further provided with a self-contained constant temperature heater 17. So as to keep the water in the constant temperature water tank 2 at a constant temperature when the solid oxide fuel cell 1 is not in operation.
As a preferable scheme of this embodiment, the battery 15 is further connected to the thermostatic heater 17 for supplying power, so that the thermostatic heater 17 is obtained from the inside of the system, and the energy loss of the system is reduced.
As a preferable scheme of this embodiment, the constant temperature water tank 2 is further connected with an external heat exchanger 5 for outputting surplus heat.
As a preferable scheme of the embodiment, the system further comprises a microcontroller 18, an input end of the microcontroller 18 is connected with the temperature sensor 19, and an output end of the microcontroller 18 is connected with the fuel compressor 8, the air compressor 12, the first electric valve 20, the second electric valve 21 and the circulating water pump 4. The temperature sensor 19 is installed in the solid oxide fuel cell 1, the first electrically operated valve 20 is installed between the burner 14 and the first heat exchanger 10, and the second electrically operated valve 21 is installed between the constant temperature water tank 2 and the steam generator 11. The utility model discloses can be according to the dynamic temperature information of solid oxide fuel cell stack, the heating rate when can the accurate control solid oxide fuel cell start and battery pack's work and the temperature interval of shut down state, protection battery pack can not be because heating rate and high temperature or low excessively damage, can solve the big problem of battery system energy loss effectively again, improves battery system's energy conversion.
The utility model discloses when using, concrete working process as follows:
first, the circulating water pump 4 is started so that the constant temperature water tank 2 preheats the solid oxide fuel cell 1. Anode fuel, for example hydrogen, is compressed by a fuel compressor 8 and enters a mixer 9, and is mixed with superheated water vapor generated from a steam generator 11 in the mixer 9 and heated in a first heat exchanger 10, and then is input to an anode fuel inlet 101 of the solid oxide fuel cell 1 through an anode fuel input pipe 6. The cathode fuel air is compressed by the air compressor 12, enters the second heat exchanger 13 for heating, and then is input to the cathode fuel inlet 102 of the solid oxide fuel cell 1 through the cathode fuel input pipe 7. The anode fuel and the cathode fuel react in the solid oxide fuel cell 1 to generate electric power and generate heat. The reaction products in the solid oxide fuel cell 1 enter the burner 14 through the reaction product outlet 103 to be burned, and tail gas with heat is generated.
The electric energy generated by the solid oxide fuel cell 1 is recovered by the storage battery 15, and the storage battery 15 can output the electric energy through the DC/AC converter 16 and can also transmit the electric energy to the constant temperature heater 17 for utilization.
The heat generated by the solid oxide fuel cell 1 is transferred to the constant temperature water tank 2 through the heat exchange pipe 3, and the water in the constant temperature water tank 2 is heated at constant temperature. Excess heat, if any, in the thermostatic water tank 2 can be transferred to an external heat exchanger 5 for use.
The burner 14 produces hot exhaust gas for supplying heat to the first heat exchanger 10, the second heat exchanger 13 and the thermostatic water tank 2.
The utility model discloses when using, concrete regulation and control process as follows:
first, when the solid oxide fuel cell 1 is started up:
the circulating water pump 4 is started first, so that the constant temperature water tank 2 preheats the solid oxide fuel cell 1, and the starting time of the solid oxide fuel cell 1 is shortened. When the temperature rise rate of the solid oxide fuel cell 1 exceeds or is lower than the set parameters, the speeds of the fuel compressor 8, the air compressor 12 and the circulating water pump 4 are adjusted, the rate of the reaction raw materials entering the solid oxide fuel cell 1 is changed, and the rate of the high-temperature steam of the steam generator 11 and the high-temperature gas output of the combustor 14 is changed, so that the temperature rise rate of the solid oxide fuel cell 1 is effectively controlled.
Second, when the solid oxide fuel cell 1 is operated:
when the working temperature of the solid oxide fuel cell 1 exceeds or is lower than the set parameters, the speeds of the fuel compressor 8, the air compressor 12 and the circulating water pump 4 are adjusted, the speed of the reaction raw materials entering the solid oxide fuel cell 1 is changed, and the speed of the high-temperature steam of the steam generator 11 and the output speed of the high-temperature gas of the combustor 14 are changed, so that the working temperature of the solid oxide fuel cell 1 is effectively controlled.
When the solid oxide fuel cell 1 is shut down:
when the temperature of the solid oxide fuel cell 1 is detected to be lower than the set parameter, the speed of the circulating water pump 4 is adjusted, the constant temperature heater 17 is started to heat the constant temperature water tank 2, and then the solid oxide fuel cell 1 is heated and insulated, so that the damage of internal components of the solid oxide fuel cell 1 due to the over-low temperature is prevented.
Claims (5)
1. A solid oxide fuel cell cogeneration device comprises a solid oxide fuel cell (1) and is characterized by further comprising a constant temperature water tank (2), wherein one end of a heat exchange pipe (3) is installed in the solid oxide fuel cell (1), a circulating water pump (4) is arranged on the heat exchange pipe (3), and the other end of the heat exchange pipe (3) is installed in the constant temperature water tank (2) and used for heat circulation;
the fuel cell system is characterized by also comprising an anode fuel input pipe (6), wherein the anode fuel input pipe (6) is sequentially connected with a fuel compressor (8), a mixer (9) and a first heat exchanger (10), and the first heat exchanger (10) is connected with an anode fuel inlet (101) of the solid oxide fuel cell (1); the constant-temperature water tank (2) is connected with a steam generator (11), and the steam generator (11) is connected with the mixer (9);
the solid oxide fuel cell system further comprises a cathode fuel input pipe (7), wherein an air compressor (12) and a second heat exchanger (13) are sequentially connected to the cathode fuel input pipe (7), and the second heat exchanger (13) is connected with a cathode fuel inlet (102) of the solid oxide fuel cell (1);
a reaction product outlet (103) of the solid oxide fuel cell (1) is connected with a combustor (14), and the combustor (14) is sequentially connected with a first heat exchanger (10), a second heat exchanger (13) and a constant-temperature water tank (2) for supplying heat;
the electric energy output end (104) of the solid oxide fuel cell (1) is connected with a storage battery (15) for supplying power.
2. The co-generation device of claim 1, wherein a DC/AC converter (16) is connected to the battery (15).
3. The cogeneration device of solid oxide fuel cells as claimed in claim 1, wherein the constant temperature water tank (2) is further provided with a self-contained constant temperature heater (17).
4. A co-generation device for solid oxide fuel cell as claimed in claim 3, wherein the battery (15) is further connected to a constant temperature heater (17) for supplying power.
5. The co-generation device of claim 1, wherein the thermostatic water tank (2) is further connected to an external heat exchanger (5) for outputting excess heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021588166.7U CN212725394U (en) | 2020-08-03 | 2020-08-03 | Thermoelectric combined supply device for solid oxide fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021588166.7U CN212725394U (en) | 2020-08-03 | 2020-08-03 | Thermoelectric combined supply device for solid oxide fuel cell |
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| CN212725394U true CN212725394U (en) | 2021-03-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113793963A (en) * | 2021-08-06 | 2021-12-14 | 东南大学 | Fluidized bed catalytic electrode ammonia direct fuel cell system |
| CN114628726A (en) * | 2022-04-18 | 2022-06-14 | 山东建筑大学 | Cogeneration device of solid oxide fuel cell and operation method thereof |
| CN114927717A (en) * | 2022-05-10 | 2022-08-19 | 徐州华清京昆能源有限公司 | Solid oxide fuel cell heat dormancy starting device with insulation construction |
-
2020
- 2020-08-03 CN CN202021588166.7U patent/CN212725394U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113793963A (en) * | 2021-08-06 | 2021-12-14 | 东南大学 | Fluidized bed catalytic electrode ammonia direct fuel cell system |
| CN114628726A (en) * | 2022-04-18 | 2022-06-14 | 山东建筑大学 | Cogeneration device of solid oxide fuel cell and operation method thereof |
| CN114927717A (en) * | 2022-05-10 | 2022-08-19 | 徐州华清京昆能源有限公司 | Solid oxide fuel cell heat dormancy starting device with insulation construction |
| CN114927717B (en) * | 2022-05-10 | 2023-10-24 | 徐州华清京昆能源有限公司 | Solid oxide fuel cell hot dormancy starting device with heat preservation structure |
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