CN114481181A - Micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply - Google Patents
Micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply Download PDFInfo
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- CN114481181A CN114481181A CN202210021635.4A CN202210021635A CN114481181A CN 114481181 A CN114481181 A CN 114481181A CN 202210021635 A CN202210021635 A CN 202210021635A CN 114481181 A CN114481181 A CN 114481181A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 75
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000001257 hydrogen Substances 0.000 title claims abstract description 46
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 239000007787 solid Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 14
- 238000005265 energy consumption Methods 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/67—Heating or cooling means
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
- C25B1/042—Hydrogen or oxygen by electrolysis of water by electrolysis of steam
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
Abstract
The invention provides a micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply, which comprises a micro combustion heat supply and power supply system and an electrolytic cell electrolytic hydrogen production system, wherein the micro combustion heat supply and power supply system comprises a micro combustion chamber and a thermophotovoltaic cell, the micro combustion chamber is communicated with a fuel conveying system, and liquid water in a pipeline on the wall surface of the micro combustion chamber is changed into water vapor by combusting fuel in the micro combustion chamber; the thermo-optical battery is arranged on the outer wall surface of the combustion chamber and is used for generating electric energy; the electrolytic cell hydrogen production system comprises an electrolytic cell, the generated water vapor is input into the electrolytic cell, and the electric energy generated by the thermo-optical cell is input into the electrolytic cell and is used for electrolyzing the water vapor to generate hydrogen. The invention fully utilizes the advantages of microscale combustion and solid oxide electrolysis hydrogen production, and combines the microscale combustion and the solid oxide electrolysis hydrogen production to improve the hydrogen production efficiency and reduce the energy consumption.
Description
Technical Field
The invention relates to the field of electrolytic hydrogen production, in particular to a micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply.
Background
When the SOEC (solid oxide electrolytic cell) electrolyzes water vapor, the water vapor needs to be heated to about 800 ℃, and the high-temperature requirement of the electrolytic cell is well met by the innovative structural design of the micro-combustion chamber attached electrolytic cell. Chemical energy of hydrocarbon fuel is converted into heat energy through combustion in the microscale combustor, water in the heating coil pipe is heated to generate high-temperature steam, the high-temperature steam is introduced into the electrolytic cell, and the thermophotovoltaic cell attached to the combustion chamber can generate electric energy to provide electric energy for electrolysis of the electrolytic cell. The heated water vapor is electrolyzed and micro-combusted in the electrolytic cell to produce hydrogen. Basic structure of SOEC (solid oxide electrolysis): the middle is a compact electrolyte layer, and the two sides are a porous cathode and an anode. The device can efficiently convert electric energy into chemical energy at high temperature (generally 800-1000 ℃). The reaction equation of SOEC high-temperature electrolyzed water is as follows: hydrogen electrode: 2H2O+4e→2H2+2O2-Oxygen electrode: 2O2-→O2+4 e. The water vapor molecules are decomposed into H by taking electrons from an external circuit on the hydrogen electrode side (cathode side)2And O2-. Generation of H2Escape from the hydrogen electrode, O2-Then migrates to the oxygen electrode side (anode side) through the dense electrolyte layer, losing electrons to generate oxygen gas. The SOEC basically consists of a dense electrolyte layer in the middle, and porous cathodes and anodes on both sides, and the electrolyte is mainly used for conducting oxygen ions between the electrodes, blocking electronic conduction and separating oxidizing and reducing gases. The electrodes are typically porous in structure to facilitate gas diffusion and transport.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply, which is characterized in that the wall surfaces of two square micro combustion chambers are attached to a solid oxide electrolytic cell to provide heat required by reaction for the solid oxide electrolytic cell. And a thermo-optical cell is attached to the other side of the combustion chamber to provide electric energy for the electrolytic cell. The inner wall surface of the combustion chamber is provided with a groove, and a miniature coiled pipe is embedded in the groove to provide required water vapor for the electrolytic cell. The anode of the electrolytic cell generates the final product hydrogen.
The present invention achieves the above-described object by the following technical means.
A micro solid oxide electrolysis hydrogen production device based on micro combustion heat and power supply comprises a micro combustion heat and power supply system and an electrolytic cell electrolysis hydrogen production system;
the micro-combustion heat supply and power supply system comprises a micro-combustion chamber and a thermo-optical cell, wherein the micro-combustion chamber is communicated with a fuel conveying system, and liquid water in a pipeline on the wall surface of the micro-combustion chamber is changed into water vapor by combusting fuel in the micro-combustion chamber; the thermo-optical battery is arranged on the outer wall surface of the combustion chamber and is used for generating electric energy;
the electrolytic cell hydrogen production system comprises an electrolytic cell, the generated water vapor is input into the electrolytic cell, and the electric energy generated by the thermo-optical cell is input into the electrolytic cell and is used for electrolyzing the water vapor to generate hydrogen.
Further, the fuel delivery system comprises a premixing chamber and an anti-backfire device, wherein 2 kinds of gas fuel are input into the premixing chamber to be mixed, and the anti-backfire device is arranged at the outlet of the premixing chamber.
Furthermore, micro-combustion chambers are respectively arranged on two sides of the electrolytic cell, liquid pipelines are arranged in the wall surfaces of the micro-combustion chambers, and a thermo-optical cell is arranged on one side of each micro-combustion chamber.
Further, the liquid pipeline is a serpentine coil.
Furthermore, the gas discharged from the exhaust ports of the micro-combustion chambers on the two sides is input outside the pipe wall of the liquid pipeline and is used for preheating the liquid in the liquid pipeline.
Further, the electrolytic cell comprises an anode, an electrolyte and a cathode, electric energy generated by the thermophotovoltaic cell is respectively input into the anode and the cathode, the electrolyte is positioned between the anode and the cathode, and the water vapor generated in the liquid pipeline is input into the electrolyte.
The invention has the beneficial effects that:
1. the micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply is characterized in that a groove is formed in a wall surface with the length of about 20mm and the width of about 15mm, the groove depth is about 1mm, the groove interval is also 1mm, a coiled pipe with the diameter of 1mm is embedded, and after water is introduced into the coiled pipe, the temperature is raised for sufficient time by heating, and the steam can reach the high temperature required by electrolysis.
2. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply fully utilizes the flue gas discharged from the tail part of the combustion chamber. The flue gas discharged from the tail of the micro-combustion chamber can be used for preheating water to be guided into the coiled pipe, so that the heat loss can be reduced, the energy is saved, and the low carbon is realized.
3. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply fully utilizes the advantages of micro-scale combustion and solid oxide electrolysis hydrogen production, and the micro solid oxide electrolysis hydrogen production device and the solid oxide electrolysis hydrogen production device are combined to be used, so that the hydrogen production efficiency is improved, and the energy consumption is reduced. The micro-scale combustion has the advantages of small volume, simple structure, high energy density, no environmental pollution, stable and durable energy supply and the like. The micro-scale combustion is used for providing heat, so that the methane can be fully combusted, and the energy is saved. SOEC has the advantages of all-solid structure, no need of noble metal catalysts, wide fuel selection range, and the like, and is receiving wide attention. The hydrogen production by electrolyzing water vapor at high temperature has the advantages of reliability, environmental protection, low cost, high hydrogen production efficiency and the like.
Drawings
FIG. 1 is a system diagram of a micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply.
FIG. 2 is a schematic view of the installation of the micro-combustor, the electrolytic cell and the thermo-optic cell according to the present invention.
FIG. 3 is a schematic view of an electrolytic cell according to the present invention.
FIG. 4 is a schematic view of a serpentine coil according to the present invention.
In the figure:
1-a gas bottle; 2-air bottle; 3-a pressure reducing valve; 4-a mass flow controller; 5-an anti-backfire device; 6-a premixing chamber; 7-micro combustion chamber; 8-a thermo-optic cell; 9-an electrolytic cell; 901-an anode; 902-an electrolyte; 903-cathode.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. 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 specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply comprises a micro combustion heat supply and power supply system and an electrolytic cell electrolysis hydrogen production system, wherein the micro combustion heat supply and power supply system comprises a micro combustion chamber 7 and a thermo-optical cell 8, the micro combustion chamber 7 is communicated with a fuel conveying system, and liquid water in a pipeline on the wall surface of the micro combustion chamber 7 is changed into water vapor by burning fuel in the micro combustion chamber 7; the thermo-optical cell 8 is arranged on the outer wall surface of the combustion chamber 7 and is used for generating electric energy; the electrolytic cell hydrogen production system comprises an electrolytic cell 9, the generated water vapor is input into the electrolytic cell 9, and the electric energy generated by the thermo-optical cell 8 is input into the electrolytic cell 9 and is used for electrolyzing the water vapor to generate hydrogen.
As shown in fig. 1 and 2, the fuel delivery system comprises a premixing chamber 5 and an anti-backfire device 6, 2 kinds of gas fuel are input into the premixing chamber 5 to be mixed, and the anti-backfire device 6 is arranged at the outlet of the premixing chamber 5. The 2 kinds of gas fuel are respectively gas and air, the gas bottle 1 is sequentially connected with a pressure reducing valve 3 and a mass flow controller 4 to be input into a premixing chamber 5, the air bottle 2 is sequentially connected with the pressure reducing valve 3 and the mass flow controller 4 to be input into the premixing chamber 5, and the gas in the gas bottle 1 is hydrogen or methane. The electrolytic cell is characterized in that micro-combustion chambers 7 are respectively arranged on two sides of the electrolytic cell 9, liquid pipelines are arranged in the wall surfaces of the micro-combustion chambers 7, and a thermo-optical cell 8 is arranged on one side of each micro-combustion chamber 7. As shown in fig. 4, the liquid conduit is a serpentine coil. The gas discharged from the exhaust ports of the micro-combustion chambers 7 at the two sides is input outside the pipe wall of the liquid pipeline and is used for preheating the liquid in the liquid pipeline.
As shown in fig. 3, the electrolytic cell 9 includes an anode 901, an electrolyte 902 and a cathode 903, the electric energy generated by the thermo-optical cell 8 is respectively input to the anode 901 and the cathode 903, the electrolyte 902 is located between the anode 901 and the cathode 903, and the water vapor generated in the liquid pipeline is input to the electrolyte 902.
The implementation mode is as follows: the fuel gas and the air are adjusted by a mass flow controller, enter the premixing chamber 5 and are fully mixed, and then enter the combustion chamber 7. The wall surfaces of the two micro-combustion chambers 7 are tightly attached to the electrolytic cell 9 to provide heat energy, meanwhile, tail gas of the combustion chambers is used for preheating water in the serpentine pipe, then the water in the serpentine pipe is combusted and heated to generate high-temperature water vapor, the high-temperature water vapor enters the electrolytic cell 9, the thermo-optical cell 8 attached to the other surface of the micro-combustion chambers 7 generates electric energy to provide electric energy required by electrolysis for the electrolytic cell 9, the high-temperature water vapor is electrolyzed in the electrolytic cell 9, and generated hydrogen is collected from the anode 901.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. A micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply is characterized by comprising a micro combustion heat supply and power supply system and an electrolytic cell electrolysis hydrogen production system,
the micro-combustion heat supply and power supply system comprises a micro-combustion chamber (7) and a thermo-optical cell (8), wherein the micro-combustion chamber (7) is communicated with a fuel conveying system, and liquid water in a pipeline on the wall surface of the micro-combustion chamber (7) is changed into water vapor by combusting fuel in the micro-combustion chamber (7); the thermo-optic cell (8) is arranged on the outer wall surface of the combustion chamber (7) and is used for generating electric energy;
the electrolytic cell hydrogen production system comprises an electrolytic cell (9), the generated water vapor is input into the electrolytic cell (9), and the electric energy generated by the thermo-optical cell (8) is input into the electrolytic cell (9) and is used for electrolyzing the water vapor to generate hydrogen.
2. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply according to claim 1, characterized in that the fuel delivery system comprises a premixing chamber (5) and an anti-backfire device (6), 2 gas fuels are input into the premixing chamber (5) to be mixed, and the anti-backfire device (6) is arranged at the outlet of the premixing chamber (5).
3. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply according to claim 1, characterized in that micro combustion chambers (7) are respectively installed at two sides of the electrolytic cell (9), a liquid pipeline is arranged in the wall surface of each micro combustion chamber (7), and a thermo-optical cell (8) is installed at one side of each micro combustion chamber (7).
4. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply according to claim 1, characterized in that the liquid pipeline is a serpentine coil.
5. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply according to claim 3, characterized in that the gas discharged from the exhaust ports of the micro combustion chambers (7) at two sides is input to the outside of the pipe wall of the liquid pipeline for preheating the liquid in the liquid pipeline.
6. The micro solid oxide electrolysis hydrogen production device based on micro combustion heat supply and power supply according to claim 1, characterized in that the electrolytic cell (9) comprises an anode (901), an electrolyte (902) and a cathode (903), the electric energy generated by the thermo-optical cell (8) is respectively input into the anode (901) and the cathode (903), the electrolyte (902) is positioned between the anode (901) and the cathode (903), and the water vapor generated in the liquid pipeline is input into the electrolyte (902).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021635.4A CN114481181A (en) | 2022-01-10 | 2022-01-10 | Micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210021635.4A CN114481181A (en) | 2022-01-10 | 2022-01-10 | Micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply |
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| CN202210021635.4A Pending CN114481181A (en) | 2022-01-10 | 2022-01-10 | Micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply |
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Citations (7)
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|---|---|---|---|---|
| CN106498431A (en) * | 2016-12-30 | 2017-03-15 | 中国石油大学(华东) | A kind of disc type solar energy coupling SOEC electrolytic hydrogen productions equipment and hydrogen production process |
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| US20200358112A1 (en) * | 2016-08-03 | 2020-11-12 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | System for regulating the temperature and pressure of a high-temperature electrolyser (soec) reversibly operating as a fuel cell stack (sofc) |
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2022
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