CN115621512A - Safe treatment device for treating pure hydrogen SOFC power generation system tail gas - Google Patents
Safe treatment device for treating pure hydrogen SOFC power generation system tail gas Download PDFInfo
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- CN115621512A CN115621512A CN202211216916.1A CN202211216916A CN115621512A CN 115621512 A CN115621512 A CN 115621512A CN 202211216916 A CN202211216916 A CN 202211216916A CN 115621512 A CN115621512 A CN 115621512A
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- hydrogen
- heat exchanger
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
- H01M8/04022—Heating by combustion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
- H01M8/04074—Heat exchange unit structures specially adapted for fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04104—Regulation of differential pressures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/124—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte
- H01M8/1246—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte the electrolyte consisting of oxides
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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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a safe treatment device for treating tail gas of a pure hydrogen SOFC power generation system, which belongs to the field of electricity combined supply heat exchange systems, solves the problems that tail gas emission does not meet environmental protection requirements and potential safety hazards exist, and mainly solves the technical scheme that the safe treatment device for treating the tail gas of the pure hydrogen SOFC power generation system comprises an air compressor, a fuel compressor and a solid oxide fuel cell, wherein the solid oxide fuel cell is used for reacting air and hydrogen, outputting electric energy and heating the air and the hydrogen, the solid oxide fuel cell is connected with a reactor, the reactor is used for converting the hydrogen into water vapor, the reactor is connected with a first heat exchanger, the reactor discharges the generated water vapor to the first heat exchanger, the fuel compressor is communicated with the first heat exchanger, and the fuel compressor conveys the hydrogen to the first heat exchanger to form convection with the water vapor discharged by the reactor. The invention is mainly used for converting hydrogen into steam.
Description
[ technical field ] A
The invention discloses a safe treatment device for treating pure hydrogen SOFC power generation system tail gas, and belongs to the technical field of electricity combined supply and heat exchange systems.
[ background of the invention ]
Solid Oxide Fuel Cells (SOFC) are used as a new-generation fuel cell, can convert chemical energy stored in fuel and oxidant into electric energy at high temperature (500-1000 ℃), have the advantages of high power generation efficiency, wide fuel selection range, high waste heat temperature, modular structure, flexible installation and the like, and are considered to be the best prime mover selection of a future cogeneration system.
Traditional hydrogen and air admission solid oxide fuel cell need use outside electric power to heat before reacting, have increased the consumption of the energy to improved the cost of electricity generation, solid oxide pond power generation system's exhaust temperature is high in addition, if directly discharge in the middle of the environment, can cause a large amount of energy losses, cause the heat utilization efficiency of system to be low, secondly with hydrogen direct discharge in the atmosphere, be not conform to the environmental protection requirement and have the potential safety hazard.
[ summary of the invention ]
The invention aims to solve the problems that the tail gas emission does not meet the environmental protection requirement and potential safety hazards exist, and provides a safe treatment device for treating the tail gas of a pure hydrogen SOFC power generation system, which can convert hydrogen into steam.
The technical scheme adopted by the invention is as follows:
the utility model provides a safe processing apparatus for handling pure hydrogen SOFC power generation system tail gas, includes air compressor, fuel compressor and solid oxide fuel cell, air compressor is used for providing air to solid oxide fuel cell, fuel compressor is used for providing hydrogen to solid oxide fuel cell, solid oxide fuel cell is used for reacting air and hydrogen, exports electric energy and heats air and hydrogen, solid oxide fuel cell is connected with the reactor, the reactor is used for turning into vapor with hydrogen, the reactor is connected with first heat exchanger, the reactor is discharged generated vapor to first heat exchanger, fuel compressor with first heat exchanger is linked together, fuel compressor carries hydrogen to first heat exchanger, forms the convection current with the vapor that the reactor discharged.
Preferably, the solid oxide fuel cell comprises a cathode cavity and an anode cavity, the air compressor is connected with the cathode cavity, and the fuel compressor is connected with the anode cavity.
Preferably, the solid oxide fuel cell is connected with a second heat exchanger, the air compressor is communicated with the second heat exchanger, and the air compressor conveys air through the second heat exchanger to form convection with tail gas discharged by the solid oxide fuel cell.
Preferably, the solid oxide fuel cell comprises a cathode cavity and an anode cavity, the anode cavity is communicated with the first heat exchanger, and the cathode cavity is communicated with the second heat exchanger.
Preferably, a first heat exchange cavity and a second heat exchange cavity are arranged in the first heat exchanger, the reactor and the fuel compressor are communicated with the first heat exchange cavity, and the solid oxide fuel cell and the air compressor are communicated with the second heat exchange cavity.
Preferably, the air compressor is provided with a first air inlet for air to enter, the hydrogen compressor is provided with a second air inlet for hydrogen to enter, and the second air inlet is connected with a hydrogen supply device.
Preferably, the first heat exchanger is a PCHE heat exchanger.
The beneficial effects of the invention are as follows:
the solid oxide fuel cell is connected with a reactor, the reactor converts hydrogen which is not completely reacted into water vapor, the hydrogen is prevented from being directly discharged into the atmosphere, the tail gas emission meets the environmental protection requirement, and meanwhile, the potential safety hazard caused by the hydrogen can be avoided; in addition, hydrogen is converted into steam to be combusted, the steam discharged to the first heat exchanger from the reactor is high-temperature gas, the temperature of the hydrogen output by the fuel compressor is lower, the hydrogen and the high-temperature gas discharged from the reactor form convection in the first heat exchanger, and the hydrogen output by the fuel compressor exchanges heat with the high-temperature gas to heat the hydrogen entering the solid oxide fuel cell, so that an additional heater is not needed in the invention, and the purposes of saving energy and reducing cost are achieved; in addition, the hydrogen is heated by the high-temperature steam after the reaction, the energy consumption can be reduced by utilizing the heat of the tail gas, and the heat utilization rate of the invention is improved.
Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.
[ description of the drawings ]
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Reference numerals are as follows: 1 fuel compressor, 11 hydrogen supply device, 2 air compressor, 3 solid oxide fuel cell, 31 anode chamber, 32 cathode chamber, 4 reactor, 51 first heat exchanger, 52 second heat exchanger.
[ detailed description ] embodiments
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the present embodiment shows a safe treatment device for treating pure hydrogen SOFC power generation system tail gas, comprising an air compressor 2, a fuel compressor 1 and a solid oxide fuel cell 3 (SOFC), wherein the air compressor 2 is provided with a first air inlet for air to enter, and the air compressor 2 absorbs air from the outside atmosphere through the first air inlet and provides air to the solid oxide fuel cell 3; the fuel compressor 1 is provided with a second air inlet for hydrogen to enter, the second air inlet is connected with a hydrogen supply device 11, the hydrogen supply device 11 generates hydrogen, the fuel compressor 1 absorbs the hydrogen through the second air inlet and provides the hydrogen for the solid oxide fuel cell 3, the solid oxide fuel cell 3 comprises a cathode cavity 32 and an anode cavity 31, the air compressor 2 is connected with the cathode cavity 32, the air is compressed by the air compressor 2 and then sent into the cathode cavity 32 of the solid oxide fuel cell 3, the fuel compressor 1 is connected with the anode cavity 31, the hydrogen is compressed by the fuel compressor 1 and then sent into the anode cavity 31 of the solid oxide fuel cell 3, and the air and the hydrogen react in the solid oxide fuel cell 3 to output electric energy and generate high-temperature tail gas.
In this embodiment, the solid oxide fuel cell 3 is connected to a reactor 4, the reactor 4 is configured to convert hydrogen into water vapor, the reactor 4 is connected to a first heat exchanger 51, the reactor 4 discharges the generated water vapor to the first heat exchanger 51, the fuel compressor 1 is communicated with the first heat exchanger 51, the fuel compressor 1 delivers hydrogen to the first heat exchanger 51 to form a convection with the water vapor discharged from the reactor 4, the solid oxide fuel cell 3 is connected to a second heat exchanger 52, the air compressor 2 is communicated with the second heat exchanger 52, and the air compressor 2 delivers air to the second heat exchanger 52 to form a convection with the tail gas discharged from the solid oxide fuel cell 3.
It is understood that, in other embodiments, the first heat exchanger 51 may also be provided with a first heat exchange cavity and a second heat exchange cavity inside, the air compressor 2 is communicated with the first heat exchange cavity, the cathode cavity 32 is communicated with the first heat exchange cavity, the fuel compressor 1 is communicated with the second heat exchange cavity, and the anode cavity 31 is communicated with the second heat exchange cavity.
In the operation flow of this embodiment, after the air compressor 2 and the fuel compressor 1 are started, air and hydrogen are respectively pushed to the second heat exchanger 52 and the first heat exchanger 51, at this time, the air and the hydrogen are both normal temperature gases, then the air and the hydrogen respectively enter the cathode cavity 32 and the anode cavity 31 of the solid oxide fuel cell 3, the air and the hydrogen react in the solid oxide fuel cell 3, the solid oxide fuel cell 3 discharges the exhaust gas after the reaction and the air and hydrogen which are not completely reacted, wherein the exhaust gas and the hydrogen discharged from the anode cavity 31 enter the reactor 4, the reactor 4 burns the hydrogen to convert into water vapor and then discharges the water vapor to the first heat exchanger 51, and the exhaust gas and the air discharged from the cathode cavity 32 enter the second heat exchanger 52, at this time, the exhaust gas, the water vapor and the air which are not completely reacted are all high temperature gases, in the first heat exchanger 51, the flow direction of the normal temperature hydrogen conveyed by the fuel compressor 1 is opposite to the flow direction of the high temperature water vapor, the normal temperature hydrogen and the high temperature water vapor are heated, and the hydrogen before entering the solid oxide fuel cell 3 is heated; similarly, in the second heat exchanger 52, the flow direction of the normal temperature air delivered by the air compressor 2 is opposite to the flow direction of the high temperature tail gas, and the normal temperature air exchanges heat with the high temperature tail gas, so that the normal temperature air is heated, and the temperature of the air before entering the solid oxide fuel cell 3 is raised.
In the embodiment, the solid oxide fuel cell 3 is connected with the reactor 4, the reactor 4 converts hydrogen which is not completely reacted into water vapor, so that the hydrogen is prevented from being directly discharged into the atmosphere, the tail gas emission meets the environmental protection requirement, and meanwhile, the potential safety hazard caused by the hydrogen can be avoided; in addition, hydrogen is converted into steam to be combusted, the steam discharged from the reactor 4 to the first heat exchanger 51 is high-temperature gas, the temperature of the hydrogen output by the fuel compressor 1 is low, convection is formed between the hydrogen output by the fuel compressor 1 and the high-temperature gas discharged from the reactor 4 in the first heat exchanger 51, the hydrogen output by the fuel compressor 1 exchanges heat with the high-temperature gas, and the hydrogen entering the solid oxide fuel cell 3 is heated, so that an additional heater is not needed in the embodiment, and the purposes of saving energy and reducing cost are achieved; in addition, the embodiment heats the hydrogen and the air by using the high-temperature steam and the tail gas after the reaction, and the heat of the tail gas is utilized to reduce the energy consumption and improve the heat utilization rate of the embodiment.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (7)
1. A safe processing apparatus for processing pure hydrogen SOFC power generation system tail gas, includes air compressor, fuel compressor and solid oxide fuel cell, its characterized in that: the air compressor is used for providing air for the solid oxide fuel cell, the fuel compressor is used for providing hydrogen for the solid oxide fuel cell, the solid oxide fuel cell is used for reacting with the air and the hydrogen, outputting electric energy and heating the air and the hydrogen, the solid oxide fuel cell is connected with a reactor, the reactor is used for converting the hydrogen into water vapor, the reactor is connected with a first heat exchanger, the reactor discharges the generated water vapor to the first heat exchanger, the fuel compressor is communicated with the first heat exchanger, and the fuel compressor conveys the hydrogen to the first heat exchanger and forms convection with the water vapor discharged by the reactor.
2. The safety processing device for processing the tail gas of the pure hydrogen SOFC power generation system according to the claim 1, is characterized in that: the solid oxide fuel cell comprises a cathode cavity and an anode cavity, the air compressor is connected with the cathode cavity, and the fuel compressor is connected with the anode cavity.
3. The safety processing device for processing the tail gas of the pure hydrogen SOFC power generation system according to the claim 1, is characterized in that: the solid oxide fuel cell is connected with a second heat exchanger, the air compressor is communicated with the second heat exchanger, and the air compressor conveys air through the second heat exchanger to form convection with tail gas discharged by the solid oxide fuel cell.
4. The safety processing device for processing the tail gas of the pure hydrogen SOFC power generation system according to the claim 3, is characterized in that: the solid oxide fuel cell comprises a cathode cavity and an anode cavity, wherein the anode cavity is communicated with the first heat exchanger, and the cathode cavity is communicated with the second heat exchanger.
5. The safety processing device for processing the tail gas of the pure hydrogen SOFC power generation system according to the claim 1, is characterized in that: the reactor and the fuel compressor are communicated with the first heat exchange cavity, and the solid oxide fuel cell and the air compressor are communicated with the second heat exchange cavity.
6. The safety processing device for processing the tail gas of the pure hydrogen SOFC power generation system according to the claim 1, is characterized in that: the air compressor is provided with a first air inlet for air to enter, the fuel compressor is provided with a second air inlet for hydrogen to enter, and the second air inlet is connected with a hydrogen supply device.
7. A safety processing device for processing pure hydrogen SOFC power generation system tail gas according to claim 1, wherein: the first heat exchanger is a PCHE heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211216916.1A CN115621512A (en) | 2022-09-30 | 2022-09-30 | Safe treatment device for treating pure hydrogen SOFC power generation system tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211216916.1A CN115621512A (en) | 2022-09-30 | 2022-09-30 | Safe treatment device for treating pure hydrogen SOFC power generation system tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115621512A true CN115621512A (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211216916.1A Pending CN115621512A (en) | 2022-09-30 | 2022-09-30 | Safe treatment device for treating pure hydrogen SOFC power generation system tail gas |
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| Country | Link |
|---|---|
| CN (1) | CN115621512A (en) |
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2022
- 2022-09-30 CN CN202211216916.1A patent/CN115621512A/en active Pending
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