CN113621977A - Hydrogen production system with solid oxide electrolysis trough - Google Patents
Hydrogen production system with solid oxide electrolysis trough Download PDFInfo
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- CN113621977A CN113621977A CN202111072609.6A CN202111072609A CN113621977A CN 113621977 A CN113621977 A CN 113621977A CN 202111072609 A CN202111072609 A CN 202111072609A CN 113621977 A CN113621977 A CN 113621977A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 144
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 144
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 239000007787 solid Substances 0.000 title claims abstract description 61
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000007789 gas Substances 0.000 claims abstract description 81
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000001301 oxygen Substances 0.000 claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 36
- 239000008236 heating water Substances 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 39
- 238000000926 separation method Methods 0.000 claims description 33
- 238000003860 storage Methods 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 16
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- 238000001514 detection method Methods 0.000 claims description 8
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- 238000005265 energy consumption Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
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- 238000005485 electric heating Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
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- 239000005431 greenhouse gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000011195 cermet Substances 0.000 description 1
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Classifications
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- 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
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/50—Processes
-
- 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
-
- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The utility model relates to a hydrogen manufacturing system field, and a hydrogen manufacturing system with solid oxide electrolysis trough is disclosed, include the oxygen supply line that provides compressed air for the solid oxide electrolysis trough, provide the water supply line of vapor for the solid oxide electrolysis trough, derive the play hydrogen line of hydrogen in the solid oxide electrolysis trough, and set up aqueous vapor separator at play hydrogen line end, aqueous vapor separator's the end of giving vent to anger is connected with the gas holder, the gas holder passes through aqueous vapor mixing arrangement and is connected with water supply line, through set up the heat exchanger that is used for heating water vapor on water supply line, set up the hydrogen burning heating device who is used for heated air on oxygen supply line, with this replacement electric heater unit, thereby solve because of using motor heater heating potential safety hazard that exists, cause the wasting of resources and the problem that hydrogen manufacturing efficiency is low.
Description
Technical Field
The present application relates to a hydrogen production system, and more particularly, to a hydrogen production system having a solid oxide electrolyzer.
Background
With the development of human society, energy consumption in industrial production, transportation, electricity consumption, heating lamps and the like is increasing day by day. Fossil fuels emit a large amount of carbon dioxide and pollutants during combustion and use, resulting in global warming and serious environmental pollution. Particularly, in recent years, the problem that PM2.5 seriously exceeds the standard causes great concern to the environment of the public. The conflict between increasing energy demand and the ever-deteriorating environment is becoming more acute. Therefore, people need new energy sources urgently, and the energy pattern taking fossil fuels as main energy sources at present is changed, so that the aims of reducing the emission of pollutants and greenhouse gases are fulfilled.
Among the numerous new energy sources explored by people, hydrogen is a secondary energy source with high heat value, no pollution and no greenhouse gas generation. At present, the main production method of hydrogen is natural gas reforming, carbon dioxide is still generated by the method, and the problems of environmental pollution and greenhouse effect also exist in the hydrogen production process. The hydrogen production by water electrolysis is the reverse process of burning hydrogen and oxygen into water, so that water can be decomposed without any pollution as long as certain energy is provided.
Common water electrolysis hydrogen production technologies include alkaline water electrolysis, proton exchange membrane electrolysis, Solid Oxide Electrolysis Cell (SOEC), and the like, and the Solid oxide electrolysis cell, which is one of the common water electrolysis hydrogen production technologies, commonly adopts an electric heater to heat gas and steam, so that the following technical problems are caused: 1. the hydrogen and the water vapor are mixed and then are electrically heated, so that potential safety hazards exist; 2. the electric heater has the highest grade of electric energy, so that energy waste can be caused; 3. the voltage of the whole system is improved by heating with the electric heater, so that the energy consumption of the system is high and the efficiency of hydrogen production is lower under the same electrolysis condition.
Disclosure of Invention
The application mainly solves the technical problems of potential safety hazard, resource waste and low hydrogen production efficiency in the heating process by using the motor heater in the prior art, and provides the hydrogen production system with the solid oxide electrolytic cell, which utilizes the heat exchanger and the hydrogen combustion heating device to replace an electric heating device.
In order to solve the technical problem and achieve the purpose of the application, the application provides a hydrogen production system with a solid oxide electrolytic cell, which is characterized by comprising the solid oxide electrolytic cell, an oxygen supply line, a water supply line and a hydrogen outlet line, wherein the cathode side of the solid oxide electrolytic cell is connected with the oxygen supply line and the water supply line, the anode side of the solid oxide electrolytic cell is connected with the hydrogen outlet line, the tail end of the hydrogen outlet line is provided with a water-gas separation device, the air outlet end of the water-gas separation device is connected with a gas storage tank, the gas storage tank is connected with the water supply line through a water-gas mixing device, the water supply line is provided with a heat exchanger for heating water vapor, the oxygen supply line is provided with a heating device for heating air, and the heating device comprises a hydrogen combustion heating device.
In an embodiment, the hydrogen outlet line is connected with the water supply line through the water outlet end of the water-gas separation device to form a water circulation line.
In an embodiment, the heat exchanger comprises a first heat exchanger and a second heat exchanger which are arranged in series, the hot fluid source of the first heat exchanger is the hydrogen outlet line, a superheated water-hydrogen mixture flows in the hydrogen outlet line, and the water supply line intersects with the hydrogen outlet line through the first heat exchanger; the hot fluid source of the second heat exchanger is the oxygen supply line, hot air heated by the hydrogen combustion heating device flows in the oxygen supply line, the water supply line is intersected with the oxygen supply line through the second heat exchanger, and the second heat exchanger is arranged at the tail end of the oxygen supply line.
In an embodiment, the oxygen supply line is connected in series with a blower, the hydrogen combustion heating device and the second heat exchanger in sequence.
In an embodiment, the heating device further includes a third heat exchanger disposed between the fan and the hydrogen combustion heating device, and a hot fluid source of the third heat exchanger is high-temperature air flowing out of an anode side of the solid oxide electrolysis cell.
In an embodiment, a water tank, a water pump, a steam generator, the first heat exchanger, the second heat exchanger, and the water-air mixing device are connected in series on the water supply line in sequence.
In an implementation mode, the hydrogen outlet circuit comprises a first branch and a second branch, the first branch is sequentially connected with the first heat exchanger, the water-gas separation device and the water tank in series, the second branch is sequentially connected with the first heat exchanger, the water-gas separation device and the air storage tank in series, a condensing device used for condensing water-hydrogen mixture is arranged between the first heat exchanger and the water-gas separation device, a booster pump is arranged between the water-gas separation device and the air storage tank, the water-gas separation device passes through the water outlet end and is connected with the water tank, and the water-gas separation device passes through the air outlet end and is connected with the booster pump.
In an embodiment, the hydrogen combustion heating device is connected to the gas storage tank, and the gas storage tank supplies gas to the hydrogen combustion heating device.
In an embodiment, an adjusting valve for adjusting the amount of air supplied to the air storage tank is provided between the air storage tank and the hydrogen combustion heating device.
In an implementation mode, the gas outlet end of the hydrogen combustion heating device is provided with a temperature detection device for detecting the gas outlet temperature, the temperature detection device is connected with the regulating valve through a control device, a standard temperature range is set in the control device, and when the temperature detected by the temperature detection device is not in the standard temperature range, the control device controls the gas outlet amount of the gas storage tank to flow to the hydrogen combustion heating device through the regulating valve.
Compared with the prior art, the hydrogen production system with the solid oxide electrolytic cell has the following beneficial effects:
the electric heating device is replaced by the plurality of heat exchangers and the hydrogen combustion heating device, so that the potential safety hazard caused by the fact that the electric heating is carried out after the hydrogen and the steam are mixed can be avoided; the electric heater has the highest grade of electric energy, so that energy waste can be caused; thereby utilize electric heater to heat and improved entire system's voltage, consequently under the condition of same electrolysis, system energy consumption is former high, the technical problem that the efficiency of hydrogen manufacturing is lower, and hydrogen combustion heating device's hydrogen source is the hydrogen that the brineelectrolysis produced, and the source of heat exchanger hot-fluid also is from system itself, and meet hydrogen circuit and water supply line through aqueous vapor separator and form the water cycle circuit, thereby the water that separates out among the aqueous vapor separator leads to the cycle use that water supply line formed water again, consequently this system can improve hydrogen manufacturing efficiency greatly on the basis that does not increase the energy consumption.
Therefore, the method has the characteristics of safety, energy conservation and environmental protection.
Drawings
FIG. 1 is a block diagram of the overall architecture of the present application;
fig. 2 is a schematic circuit diagram of the present application.
The reference numbers in the figures illustrate: 1. a solid oxide electrolytic cell; 2. a water-gas separation device; 3. a gas storage tank; 4. a water-gas mixing device; 5. a hydrogen combustion heating device; 6. a first heat exchanger; 7. a second heat exchanger; 8. a fan; 9. a third heat exchanger; 10. a water tank; 11. a water pump; 12. a steam generator; 13. a condensing unit; 14. a booster pump; 15. adjusting a valve; 16. a temperature detection device; 17. and a control device.
Detailed Description
In order to make the objects, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the prior art, when a solid oxide electrolytic cell is used for producing hydrogen, an electric heater is used for heating gas and water vapor, so that the potential safety hazard exists because the gas and the water vapor are required to be electrically heated after being mixed; the electric heater has the highest grade of electric energy, so that energy waste can be caused; the electric heater is used for heating, so that the voltage of the whole system is improved, and therefore, under the condition of the same electrolysis, the system has high energy consumption and the hydrogen production efficiency is lower.
Therefore, the application provides a hydrogen production system with a solid oxide electrolytic tank 1, which comprises an oxygen supply line for providing compressed air for the solid oxide electrolytic tank 1, a water supply line for providing water vapor for the solid oxide electrolytic tank 1, a hydrogen outlet line for leading out hydrogen in the solid oxide electrolytic tank 1, a water-vapor separation device 2 arranged at the tail end of the hydrogen outlet line, a water circulation line formed by connecting the water outlet end of the water-vapor separation device 2 with the water supply line, a gas outlet end of the water-vapor separation device 2 connected with a gas storage tank 3, the gas storage tank 3 connected with the water supply line through a water-vapor mixing device 4, a heat exchanger for heating water vapor arranged on the water supply line, and a hydrogen combustion heating device 5 for heating air arranged on the oxygen supply line, so as to replace an electric heating device.
Example (b):
fig. 1-2 show an embodiment of the present hydrogen production system with a solid oxide electrolysis cell 1.
The embodiment of the application discloses hydrogen manufacturing system with solid oxide electrolysis trough 1, including solid oxide electrolysis trough 1, solid oxide electrolysis trough 1 middle is compact dielectric layer, be used for separating the gas and the transmission cation of both sides, the material adopts cation conductor mostly, for example YSZ or ScSZ etc., both sides are porous hydrogen electrode and oxygen electrode, porous structure is favorable to gaseous diffusion and transmission, the material of hydrogen electrode is at present commonly used Ni or YSZ porous cermet, the material of oxygen electrode mainly is the perovskite oxide material that contains the rare earth element, hydrogen electrode and oxygen electrode connect DC power supply's negative pole respectively and just reach, through electrode reaction with electric energy conversion chemical energy, wherein the cathodic reaction: h2O +2e-→H2+ O2-(ii) a And (3) anode reaction: o is2-→2e-+ 1／2O2The total reaction: h2O→H2+1／2O2。
Referring to fig. 1, in the embodiment of the present application, a water supply line is connected to the cathode side of the solid oxide electrolysis cell 1, so as to provide the solid oxide electrolysis cell 1 with the water vapor required for oxygen production by electrolysis through the water supply line; the hydrogen outlet line is connected to the anode side of the solid oxide electrolytic cell 1 to introduce oxygen produced in the solid oxide electrolytic cell 1 into the gas holder 3, and when steam is introduced into the solid oxide electrolytic cell 1, a small amount of hydrogen gas needs to be mixed into the steam to ensure the reducing atmosphere of the cathode of the solid oxide electrolytic cell 1 and prevent Ni from being oxidized, so that the gas holder 3 is connected to the water supply line through the water-gas mixing device 4 to effectively reduce the system cost by utilizing the hydrogen gas produced by itself.
At the same time, in order to ensure the oxidizing atmosphere at the cathode of the solid oxide electrolysis cell 1, it is necessary to introduce compressed air into the solid oxide electrolysis cell 1 at the same time, and an oxygen supply line is connected to the cathode side of the solid oxide electrolysis cell 1 to supply compressed air thereto.
The efficiency of the solid oxide electrolysis cell 1 is largely dependent on the electrochemical reaction rate at the cathode, anode and the oxygen transfer rate in the electrolyte. The electrode and the electrolyte need to operate at high temperature to have good conductivity and reaction rate, the working temperature of the solid oxide electrolytic tank 1 needs to be kept within the range of 500-1000 ℃, in order to ensure the working temperature in the solid oxide electrolytic tank 1, the compressed air or the water vapor needs to be heated before being introduced, so that a heat exchanger for heating the water vapor is arranged on a water supply line and is arranged in front of a water vapor mixing device 4, a small amount of hydrogen is mixed after the water vapor is heated to reduce the safety risk, a heating device for heating the air is arranged on an oxygen supply line and comprises a hydrogen combustion heating device 5, the hydrogen combustion heating device 5 uses the hydrogen as energy to heat the compressed air, the hydrogen at the position is from a gas storage tank 3, and the prior art heats the water vapor and the hydrogen by an electric heating device after being mixed, now is utilizing the heat exchanger to heat the back and mixing of carrying out vapor and hydrogen, replace electric heater unit into the heat exchanger and with the leading heating process with vapor and hydrogen mix the preceding heating homoenergetic before and can reduce the potential safety hazard, and replace original electric heater unit through heat exchanger and hydrogen combustion heating device 5, thereby can reduce entire system's energy consumption, reduce the hydrogen manufacturing cost, and hydrogen source of hydrogen combustion heating device 5 is the hydrogen that the brineelectrolysis produced, and the source of heat exchanger hot-fluid also is from system itself, therefore this system can improve hydrogen manufacturing efficiency greatly on the basis that does not increase the energy consumption.
In the embodiment of the application, in order to better produce hydrogen, a water-gas separation device 2 is added at the tail end of a hydrogen outlet line, the gas outlet end of the water-gas separation device 2 is connected with a gas storage tank 3, and the hydrogen outlet line is connected with a water supply line through the water outlet end of the water-gas separation device 2 to form a water circulation line, so that water separated from the hydrogen outlet line is conveyed to the water supply line for reuse, and the energy consumption loss of the whole system is reduced.
The water-gas separation device 2 is a centrifugal water-gas separator, and the centrifugal water-gas separator comprises a shell, the shell is in transmission connection with an external driving device, a gas-water separation cavity is arranged in the shell and is used for performing gas-water separation on a gas-water mixture entering the gas-water separation cavity, drain holes are uniformly formed in the outer surface of the shell, and foam porous filler is arranged in the gas-water separation cavity and is used for increasing the flow resistance of the gas-water separation cavity.
The hydrogen combustion heating device 5 uses hydrogen as fuel to ignite the hydrogen and then heats the compressed air, wherein the hydrogen source of the hydrogen combustion heating device 5 is the gas storage tank 3, thereby reducing the consumption of external energy.
In the embodiment of the application, the heat exchange device comprises a first heat exchanger 6 and a second heat exchanger 7 which are arranged in series, wherein the source of the hot fluid of the first heat exchanger 6 is a hydrogen outlet line, a superheated water-hydrogen mixture rich in hydrogen can be led out from the hydrogen outlet line, the temperature is higher when the water-hydrogen mixture is led out, because the working temperature in the solid oxide electrolytic tank 1 is 500-1000 ℃, and the water-hydrogen mixture must be cooled before water-hydrogen separation, therefore, the water-hydrogen mixture and the steam in the water supply line exchange heat through the first heat exchanger 6, the temperature of the water-hydrogen mixture can be reduced, the steam can be heated, the renewable energy of the system is fully utilized, and the water supply line is intersected with the hydrogen outlet line through the first heat exchanger 6.
Wherein, the hot-fluid source of second heat exchanger 7 is for supplying oxygen the circuit, the heated air temperature of heating through hydrogen combustion heating device 5 in the oxygen supply circuit can be than higher, must cool down before leading-in solid oxide electrolysis trough 1 with heated air usually, consequently, the vapor in with heated air and the water supply circuit carries out the heat transfer through second heat exchanger 7, the temperature that not only can reduce heated air, can also heat vapor, make full use of the renewable energy of system, the water supply circuit passes through second heat exchanger 7 and intersects with the oxygen supply circuit, second heat exchanger 7 sets up the end at the oxygen supply circuit, because the heated air after must passing through hydrogen combustion heating device 5 heating just can carry out heat transfer processing.
In the embodiment of the application, as shown by a dotted line in fig. 1, a fan 8, a third heat exchanger 9, a hydrogen combustion heating device 5 and a second heat exchanger 7 are sequentially connected in series on an oxygen supply line through an air guide pipe, wherein a hot fluid source of the third heat exchanger 9 is high-temperature air flowing out from an anode side of the solid oxide electrolysis cell 1, the high-temperature air is waste gas discharged from the solid oxide electrolysis cell 1, the working temperature in the solid oxide electrolysis cell 1 is 500-1000 ℃, therefore, the temperature of the discharged gas is definitely higher, and the discharged gas can be fully utilized after being introduced into the third heat exchanger 9 as the hot fluid.
The specific working flow of the oxygen supply line comprises the steps of firstly compressing air through a fan 8, secondly increasing the air temperature through a third heat exchanger 9, secondly increasing the temperature again through a hydrogen combustion heater, thirdly reducing the temperature through a second heat exchanger 7 and finally introducing the oxygen into the solid oxide electrolytic cell 1.
In the embodiment of the present application, as shown by the chain line in fig. 1, a water tank 10, a water pump 11, a steam generator 12, a first heat exchanger 6, a second heat exchanger 7 and a water-gas mixing device 4 are connected in series on a water supply line in sequence through water pipes, wherein the specific working flow of the water supply line is that the water pump 11 pumps liquid water in the water tank 10 into the steam generator 12, then the steam generator 12 guides gaseous water into the first heat exchanger 6 and the second heat exchanger 7 in sequence to heat water vapor, then the water vapor is mixed with hydrogen gas through the water-gas mixing device 4, and finally the water vapor is guided into the solid oxide electrolysis tank 1.
In the embodiment of this application, go out the hydrogen circuit and include first branch road and second branch road, it has first heat exchanger 6 to establish ties in proper order through the water pipe on the first branch road, aqueous vapor separator 2 and water tank 10, it has first heat exchanger 6 to establish ties in proper order through the water pipe on the second branch road, aqueous vapor separator 2 and gas holder 3, be provided with condensing equipment 13 that is used for the condensate water hydrogen mixture between first heat exchanger 6 and aqueous vapor separator 2, be provided with booster pump 14 between aqueous vapor separator 2 and gas holder 3, aqueous vapor separator 2 is connected with water tank 10 through going out the water end, aqueous vapor separator 2 links to each other with booster pump 14 through giving vent to anger the end.
The specific working flow of the first branch comprises the steps of introducing a water-hydrogen mixture in the solid oxide electrolytic tank 1 into the first heat exchanger 6 for primary cooling, condensing gaseous water in the water-hydrogen mixture into liquid water through the condenser, separating the liquid water through the water-gas separation device 2, and finally introducing the liquid water into the water tank 10 for reuse.
The specific working flow of the second branch is that the water-hydrogen mixture in the solid oxide electrolytic tank 1 is introduced into the first heat exchanger 6 for primary cooling, then the gaseous water in the water-hydrogen mixture is condensed into liquid water by the condenser, then the hydrogen is separated by the water-gas separation device 2, and finally the liquid water is introduced into the gas storage tank 3 by the compression of the booster pump 14.
Referring to fig. 2, in the embodiment of the present application, an adjusting valve 15 for adjusting the air supply amount of the air storage tank 3 is disposed between the air storage tank 3 and the hydrogen combustion heating device 5, a temperature detecting device 16 for detecting the temperature of the outlet air is disposed at the air outlet end of the hydrogen combustion heating device 5, the temperature detecting device 16 is connected to the adjusting valve 15 through a control device 17, a standard temperature range is set in the control device 17, and when the temperature detected by the temperature detecting device 16 is not within the standard temperature range, the control device 17 controls the air output amount of the air storage tank 3 flowing to the hydrogen combustion heating device 5 through the adjusting valve 15.
Wherein, the temperature detection device 16 detects the temperature of the gas outlet end of the hydrogen combustion heating device 5 and sends the detected temperature to the control device 17, the control device 17 compares the detected temperature with the standard temperature range, and when the detected temperature is not in the standard temperature range, the control device 17 controls the gas outlet amount of the gas storage tank 3 flowing to the hydrogen combustion heating device 5, so as to control the detected temperature in the standard temperature range.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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 at least one such feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The hydrogen production system with the solid oxide electrolytic tank is characterized by comprising a solid oxide electrolytic tank (1), an oxygen supply line, a water supply line and a hydrogen outlet line, wherein the cathode side of the solid oxide electrolytic tank (1) is connected with the oxygen supply line and the water supply line, the anode side of the solid oxide electrolytic tank (1) is connected with the hydrogen outlet line, the tail end of the hydrogen outlet line is provided with a water-gas separation device (2), the gas outlet end of the water-gas separation device (2) is connected with a gas storage tank (3), the gas storage tank (3) is connected with the water supply line through a water-gas mixing device (4), the water supply line is provided with a heat exchanger for heating water vapor, the oxygen supply line is provided with a heating device for heating air, and the heating device comprises a hydrogen combustion heating device (5).
2. The hydrogen production system with a solid oxide electrolysis cell according to claim 1, wherein the hydrogen outlet line is connected with the water supply line through the water outlet end of the water-gas separation device (2) to form a water circulation line.
3. The hydrogen production system with the solid oxide electrolysis cell according to claim 2, wherein the heat exchanger comprises a first heat exchanger (6) and a second heat exchanger (7) which are arranged in series, the hot fluid source of the first heat exchanger (6) is the hydrogen outlet line, a superheated water-hydrogen mixture flows in the hydrogen outlet line, and the water supply line intersects with the hydrogen outlet line through the first heat exchanger (6); the hot fluid source of the second heat exchanger (7) is the oxygen supply line, hot air heated by the hydrogen combustion heating device (5) flows in the oxygen supply line, the water supply line is intersected with the oxygen supply line through the second heat exchanger (7), and the second heat exchanger (7) is arranged at the tail end of the oxygen supply line.
4. The hydrogen production system with a solid oxide electrolysis cell according to claim 3, wherein a fan (8), the hydrogen combustion heating device (5) and the second heat exchanger (7) are connected in series on the oxygen supply line in sequence.
5. The hydrogen production system with the solid oxide electrolysis cell according to claim 4, wherein the heating device further comprises a third heat exchanger (9) arranged between the fan (8) and the hydrogen combustion heating device (5), and the hot fluid source of the third heat exchanger (9) is high-temperature air flowing out of the anode side of the solid oxide electrolysis cell (1).
6. The hydrogen production system with a solid oxide electrolysis cell according to claim 3, wherein a water tank (10), a water pump (11), a steam generator (12), the first heat exchanger (6), the second heat exchanger (7) and the water-gas mixing device (4) are connected in series in sequence on the water supply line.
7. The hydrogen production system having a solid oxide electrolysis cell according to claim 6, the hydrogen outlet circuit comprises a first branch and a second branch, the first branch is sequentially connected with the first heat exchanger (6), the water-gas separation device (2) and the water tank (10) in series, the second branch is sequentially connected with the first heat exchanger (6), the water-gas separation device (2) and the gas storage tank (3) in series, a condensing device (13) for condensing the water-hydrogen mixture is arranged between the first heat exchanger (6) and the water-gas separating device (2), a booster pump (14) is arranged between the water-gas separation device (2) and the gas storage tank (3), the water-gas separation device (2) is connected with the water tank (10) through the water outlet end, the water-gas separation device (2) is connected with the booster pump (14) through the air outlet end.
8. Hydrogen production system with solid oxide electrolyser as claimed in any of claims 1-7, characterized in that said hydrogen combustion heating means (5) are connected to said gas storage tank (3), said gas storage tank (3) feeding said hydrogen combustion heating means (5).
9. The system for producing hydrogen with a solid oxide electrolyzer according to claim 8, characterized in that a regulating valve (15) for regulating the amount of gas supplied to the gas storage tank (3) is provided between the gas storage tank (3) and the hydrogen combustion heating device (5).
10. The hydrogen production system with the solid oxide electrolysis cell according to claim 9, wherein the gas outlet end of the hydrogen combustion heating device (5) is provided with a temperature detection device (16) for detecting the gas outlet temperature, the temperature detection device (16) is connected with the regulating valve (15) through a control device (17), a standard temperature range is set in the control device (17), and when the temperature detected by the temperature detection device (16) is not within the standard temperature range, the control device (17) controls the gas outlet amount of the gas storage tank (3) flowing to the hydrogen combustion heating device (5) through the regulating valve (15).
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