CN114481181B - 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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- CN114481181B CN114481181B CN202210021635.4A CN202210021635A CN114481181B CN 114481181 B CN114481181 B CN 114481181B CN 202210021635 A CN202210021635 A CN 202210021635A CN 114481181 B CN114481181 B CN 114481181B
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- electrolytic cell
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- combustion chamber
- combustion
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 73
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000001257 hydrogen Substances 0.000 title claims abstract description 41
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000007787 solid Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 17
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 13
- 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 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 238000010586 diagram Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial 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
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 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
- 238000010438 heat treatment Methods 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
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention provides a micro solid oxide electrolysis 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 electrolysis hydrogen production system, wherein the micro-combustion heat supply and power supply system comprises a micro-combustion chamber and a thermo-optical cell, the micro-combustion chamber is communicated with a fuel conveying system, and liquid water in a wall pipeline 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 used for generating electric energy; the electrolytic cell electrolytic hydrogen production system comprises an electrolytic cell, wherein 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 for generating hydrogen by electrolyzing the water vapor. The invention fully utilizes the advantages of micro-scale combustion and solid oxide electrolysis hydrogen production, combines the two 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 SOEC (solid oxide electrolytic cell) electrolyzes water vapor, the water vapor needs to be heated to about 800 ℃, and the design of the invention utilizes the innovative structural design of the micro combustion chamber attached to the electrolytic cell, so that the high temperature requirement of the electrolytic cell is well solved. The chemical energy of hydrocarbon fuel is converted into heat energy through combustion in the microscale combustor, water in the heating coiled pipe is high-temperature steam and is introduced into the electrolytic cell, and the thermal-optical cell attached to the combustion chamber can generate electric energy to supply electric energy for electrolysis of the electrolytic cell. And electrolyzing the water vapor heated by micro combustion in the electrolytic cell to produce hydrogen. Basic structure of SOEC (solid oxide electrolysis): the middle part is a compact electrolyte layer, and the two sides are a porous cathode and an anode. A device capable of efficiently converting electric energy into chemical energy at a high temperature (generally 800-1000 ℃). The reaction equation of SOEC high-temperature electrolyzed water is as follows: hydrogen electrode: 2H 2O+4e→2H2+2O2-, oxygen electrode: 2O 2-→O2 +4e. The water vapor molecules are decomposed into H 2 and O 2- by electrons obtained from an external circuit on the hydrogen electrode side (cathode side). The generated H 2 escapes from the hydrogen electrode, and O 2- migrates through the dense electrolyte layer to the oxygen electrode side (anode side) where electrons are lost to generate oxygen. The SOEC is basically composed of a compact electrolyte layer in the middle and a porous cathode and anode on two sides, and the electrolyte is mainly used for conducting oxygen ions between the electrodes to separate electronic conduction and separate oxidizing and reducing gases. The electrodes are typically porous to facilitate diffusion and transport of gases.
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 two square micro-combustion chamber wall surfaces are attached to a solid oxide electrolytic cell to provide heat required by reaction. And the other side of the combustion chamber is attached with a thermo-optical battery to supply electric energy for the electrolytic cell. The inner wall surface of the combustion chamber is grooved, and a miniature serpentine tube is embedded to provide required water vapor for the electrolytic cell. The cell anode produces the final product hydrogen.
The present invention achieves the above technical object by the following means.
A micro solid oxide electrolytic 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 electrolytic hydrogen production system;
The micro-combustion heat supply and power supply system comprises a micro-combustion chamber and a thermo-optical battery, wherein the micro-combustion chamber is communicated with the fuel conveying system, and liquid water in a wall surface pipeline 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 used for generating electric energy;
The electrolytic cell electrolytic hydrogen production system comprises an electrolytic cell, wherein 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 for generating hydrogen by electrolyzing the water vapor.
Further, the fuel delivery system comprises a premixing chamber and an anti-backfire device, 2 kinds of gas fuel are input into the premixing chamber for mixing, and the anti-backfire device is arranged at the outlet of the premixing chamber.
Further, micro-combustion chambers are respectively arranged on two sides of the electrolytic cell, a liquid pipeline is arranged in the wall surface of each micro-combustion chamber, and a thermo-optical battery is arranged on one side of each micro-combustion chamber.
Further, the liquid conduit is a serpentine coil.
Further, the gas exhausted from the exhaust ports of the micro combustion chambers at the two sides is input to the outside of the pipe wall of the liquid pipeline 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 thermo-optical 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 electrolytic hydrogen production device based on micro combustion heat supply and power supply is provided with grooves on the wall surface with the length of about 20mm and the width of about 15mm, the groove depth is about 1mm, the groove spacing is also 1mm, a coiled pipe with the diameter of 1mm is embedded, and when water is introduced into the coiled pipe, the water vapor can reach the high temperature required by electrolysis after being heated for a sufficient time.
2. The micro solid oxide electrolytic hydrogen production device based on micro combustion heat supply and power supply fully utilizes the flue gas discharged from the tail of the combustion chamber. The flue gas discharged from the tail part of the micro combustion chamber can be used for preheating water which is led into the coiled pipe, so that heat loss can be reduced, and the energy-saving and low-carbon effects can be realized.
3. The micro solid oxide electrolytic hydrogen production device based on micro-combustion heat and power supply fully utilizes the advantages of micro-scale combustion and solid oxide electrolytic hydrogen production, and combines the advantages of micro-scale combustion and solid oxide electrolytic hydrogen production to improve hydrogen production efficiency and reduce energy consumption. 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 heat provided by micro-scale combustion can fully burn the methane, thereby saving energy. SOEC has the advantages of all-solid structure, no need of noble metal catalyst, wide fuel selection range and the like, and is widely paid attention to. The high-temperature electrolysis water vapor hydrogen production 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 a microcombustor, an electrolytic cell and a 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 diagram of a serpentine coil according to the present invention.
In the figure:
1-a gas cylinder; 2-an air bottle; 3-a pressure reducing valve; 4-a mass flow controller; 5-tempering preventing device; 6-a premixing chamber; 7-microcombustion chamber; 8-a thermo-optic cell; 9-an electrolytic cell; 901-anode; 902-an electrolyte; 903-cathode.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments, but the scope of the invention is not limited thereto.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
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 wall surface pipeline of the micro combustion chamber 7 is changed into water vapor by combusting fuel in the micro combustion chamber 7; the thermo-optical battery 8 is arranged on the outer wall surface of the combustion chamber 7 and used for generating electric energy; the electrolytic cell electrolytic hydrogen production system comprises an electrolytic cell 9, wherein 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 for generating hydrogen by electrolyzing the water vapor.
As shown in fig. 1 and 2, the fuel delivery system comprises a premixing chamber 5 and a backfire preventing device 6,2 kinds of gas fuel are input into the premixing chamber 5 for mixing, and the backfire preventing device 6 is arranged at the outlet of the premixing chamber 5. The 2 kinds of gas fuel are gas and air respectively, the gas bottle 1 is sequentially connected with the pressure reducing valve 3 and the mass flow controller 4 to be input into the 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 micro-combustion chamber 7 is respectively arranged at two sides of the electrolytic cell 9, a liquid pipeline is arranged in the wall surface of the micro-combustion chamber 7, and the thermo-optical battery 8 is arranged at one side of the micro-combustion chamber 7. As shown in fig. 4, the liquid conduit is a serpentine coil. The gas exhausted from the exhaust ports of the micro combustion chambers 7 on the two sides is input to the outside of the pipe wall of the liquid pipe for preheating the liquid in the liquid pipe.
As shown in fig. 3, the electrolytic cell 9 includes an anode 901, an electrolyte 902 and a cathode 903, the electric power 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 pipe is input to the electrolyte 902.
The implementation mode is as follows: the fuel gas and air are regulated by a mass flow controller, enter the premixing chamber 5, and enter the combustion chamber 7 after being fully mixed. The two micro-combustion chambers 7 are tightly attached to the wall surfaces of the electrolytic cell 9 to provide heat energy, meanwhile, the tail gas of the combustion chambers is firstly used for preheating water in the coiled pipe, then water in the coiled pipe is heated by combustion to enter the electrolytic cell 9, high-temperature water vapor enters the thermal-optical cell 8 attached to the other surface of the micro-combustion chambers 7 to generate electric energy, the electric energy required by electrolysis is provided 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 disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (3)
1. A micro solid oxide electrolytic 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 electrolytic hydrogen production system,
The micro-combustion heat supply and power supply system comprises a micro-combustion chamber (7) and a thermo-optical battery (8), wherein the micro-combustion chamber (7) is communicated with the fuel conveying system, and liquid water in a wall surface pipeline of the micro-combustion chamber (7) is changed into water vapor by combusting fuel in the micro-combustion chamber (7); the thermo-optical battery (8) is arranged on the outer wall surface of the combustion chamber (7) and used for generating electric energy;
The electrolytic cell electrolytic hydrogen production system comprises an electrolytic cell (9), wherein 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) for generating hydrogen by electrolyzing the water vapor;
The electrolytic cell (9) comprises an anode (901), an electrolyte (902) and a cathode (903), 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 pipeline is input into the electrolyte (902); micro-combustion chambers (7) are respectively arranged 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 battery (8) is arranged at one side of each micro-combustion chamber (7); and the gas exhausted from the exhaust ports of the micro combustion chambers (7) at the two sides is input to the outside of the pipe wall of the liquid pipeline and is used for preheating the liquid in the liquid pipeline.
2. The micro-combustion heat and power supply-based micro solid oxide electrolysis hydrogen production device according to claim 1, wherein the fuel conveying system comprises a premixing chamber (5) and a backfire preventing device (6), 2 gas fuels are input into the premixing chamber (5) for mixing, and the backfire preventing device (6) is arranged at the outlet of the premixing chamber (5).
3. The micro-combustion heat and power supply based micro-solid oxide electrolysis hydrogen production device according to claim 1, wherein the liquid pipeline is a serpentine coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021635.4A CN114481181B (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 CN114481181B (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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| Publication Number | Publication Date |
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| CN114481181A CN114481181A (en) | 2022-05-13 |
| CN114481181B true CN114481181B (en) | 2024-05-14 |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3054932B1 (en) * | 2016-08-03 | 2021-12-24 | Commissariat Energie Atomique | SYSTEM FOR REGULATING THE TEMPERATURE AND PRESSURE OF A HIGH TEMPERATURE ELECTROLYZER (SOEC) OPERATING IN A REVERSIBLE WAY IN A FUEL CELL (SOFC) |
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- 2022-01-10 CN CN202210021635.4A patent/CN114481181B/en active Active
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| CN114481181A (en) | 2022-05-13 |
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