CN117735744B - Mine multi-clean energy utilization system - Google Patents
Mine multi-clean energy utilization system Download PDFInfo
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- CN117735744B CN117735744B CN202311593539.8A CN202311593539A CN117735744B CN 117735744 B CN117735744 B CN 117735744B CN 202311593539 A CN202311593539 A CN 202311593539A CN 117735744 B CN117735744 B CN 117735744B
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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Abstract
The invention relates to the technical field of energy recovery equipment, and provides a mine multi-clean energy utilization system which comprises a reversible RSOC hydrogen production device, a geothermal utilization device, a mining wastewater utilization device, a solar utilization device, a power generation device, a flue gas waste heat recovery device, a wind-light power generation device, an electric storage device, a power conversion device and a reservoir; the reversible RSOC hydrogen production device comprises a reversible solid oxide electrolysis hydrogen producer, a steam generator, a steam-water separator, a hydrogen storage tank and an oxygen storage tank; the power storage device is connected to the steam generator and the power conversion device. The invention provides a mine multi-clean energy utilization system, which aims to solve the problem of low mine energy utilization efficiency in the traditional technology.
Description
Technical Field
The invention relates to the technical field of energy recovery equipment, in particular to a mine multi-clean energy utilization system.
Background
Hydrogen is a clean and pollution-free combustible gas with high energy density, and can meet the strategic requirements of low-carbon development. Common hydrogen production modes include hydrogen production by means of coal gas, natural gas, which produces waste water, waste gas, waste residue, etc. during the production process, and the resulting hydrogen is also called ash hydrogen. In addition, there is also a hydrogen production method in which renewable electric energy is generated by wind, light, water, or the like, and then the electric energy is converted into chemical energy to electrolyze water, and in this method, greenhouse gases are not generated, and environmental pollution is not caused, and the obtained hydrogen is called green hydrogen.
In the process of mining, various energy sources such as solar energy, wind energy, geothermal energy and the like exist, and how to combine various energy sources in mining with hydrogen production to improve the energy utilization efficiency is a technical problem which needs to be solved by the technicians in the field.
Disclosure of Invention
The invention provides a mine multi-clean energy utilization system, and aims to solve the problem of low mine energy utilization efficiency in the traditional technology.
In order to solve the problems, the invention provides a mine multi-clean energy utilization system, which comprises a reversible RSOC hydrogen production device, a geothermal utilization device, a mining wastewater utilization device, a solar utilization device, a power generation device, a flue gas waste heat recovery device, a wind-solar power generation device, an electric storage device, a power conversion device and a reservoir;
The reversible RSOC hydrogen production device comprises a reversible solid oxide electrolytic hydrogen production device, a steam generator, a steam-water separator, a hydrogen storage tank and an oxygen storage tank, wherein the reversible solid oxide electrolytic hydrogen production device is connected with the steam generator, the steam-water separator, the hydrogen storage tank, the oxygen storage tank, the electric power storage device and the power conversion device, and the steam-water separator is connected with the water storage tank;
the geothermal utilization device comprises a ground source heat pump structure, wherein the ground source heat pump structure is connected with the steam generator and is used for recovering geothermal energy;
The mining wastewater utilization device comprises a water suction pump, a water source heat pump structure and a wastewater treatment structure, wherein the water suction pump is used for extracting mining wastewater, the water source heat pump structure is connected with the water suction pump and the steam generator and is used for recovering the water heat in the mining wastewater, and the wastewater treatment structure is communicated with the water suction pump and the reservoir and is used for purifying the mining wastewater and conveying the treated mining wastewater to the reservoir;
The solar energy utilization device comprises a solar heat collector and a molten salt heat storage tank which are sequentially connected, and the molten salt heat storage tank is connected with the steam generator;
the power generation device comprises a generator, a steam turbine and an evaporator, wherein the evaporator is connected with the molten salt heat storage tank, and the generator is connected with the power storage device;
the flue gas waste heat recovery device comprises a flue gas waste heat recovery pipeline and a waste heat boiler which are sequentially connected, and the waste heat boiler is connected with the reservoir and the steam turbine;
the wind-solar power generation device is connected with the power conversion device;
the power storage device is connected to the steam generator and the power conversion device.
According to the mine multi-clean energy utilization system provided by the invention, the wastewater treatment structure comprises a primary treatment tank, a secondary treatment tank, a bottom mud tank and a disinfection tank, wherein the primary treatment tank is communicated with the bottom mud tank, and the secondary treatment tank is communicated with the disinfection tank and the water reservoir.
According to the mine multi-clean energy utilization system provided by the invention, the primary treatment tank is internally provided with the drug adding device, the stirrer and the filter, the drug adding device is used for adding the reaction drugs, the stirrer is used for stirring the wastewater, the filter is used for filtering the wastewater to obtain clear liquid and sludge, the secondary treatment tank is used for treating the clear liquid, and the sludge tank is used for collecting the sludge.
According to the mine multi-clean energy utilization system provided by the invention, the reverse osmosis device is arranged in the secondary treatment tank.
According to the mine multi-clean energy utilization system provided by the invention, the mine multi-clean energy utilization system further comprises a hot water tank, the reservoir is connected with the molten salt heat storage tank, and the molten salt heat storage tank, the waste heat boiler and the hot water tank are connected.
According to the mine multi-clean energy utilization system provided by the invention, the reversible solid oxide electrolytic hydrogen generator comprises a solid oxide fuel cell SOFC and a solid oxide electrolytic cell SOEC, wherein the solid oxide electrolytic cell SOEC is connected with the steam generator, the steam-water separator, the hydrogen storage tank, the electric storage device, the power conversion device and the oxygen storage tank, and the solid oxide fuel cell SOFC is connected with the hydrogen storage tank, the oxygen storage tank and the power conversion device.
According to the mine multi-clean energy utilization system provided by the invention, the heat and water source requirements of the reversible RSOC hydrogen production device can be met by utilizing the geothermal energy, wind-solar energy and solar energy existing in the plateau mine; meanwhile, the energy can be stored as regenerated electricity to provide power requirements for the reversible RSOC hydrogen production device, and the material energy and power requirements can be solved through a multi-combination system, so that internal circulation is realized, and the carbon requirements are reduced; after the mining wastewater is filtered and purified, the raw material supply for the reversible RSOC hydrogen production device can be improved, geothermal and wastewater resources are reasonably utilized, and the living cost of a mining area can be reduced; the reversible RSOC hydrogen production device can produce clean hydrogen and oxygen, meets the industrial production requirement, and can also reversely discharge to provide power for industrial equipment when the power is insufficient; in addition, the system generates water vapor to generate electricity or use the water for life in a mining area by efficiently utilizing the high-temperature flue gas generated in the smelting process of the smelting factory, and the recycling efficiency of energy sources is also remarkably improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a mine multi-clean energy utilization system.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," 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 embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The mine multi-clean energy utilization system of the present invention is described below with reference to fig. 1.
In view of the problem of low mine energy utilization efficiency in the prior art, referring to fig. 1, the invention provides a mine multi-clean energy utilization system, which comprises a reversible RSOC hydrogen production device, a geothermal utilization device, a mining wastewater utilization device, a solar utilization device, a power generation device, a flue gas waste heat recovery device, a wind-light power generation device, an electric storage device, a power conversion device and a reservoir;
The reversible RSOC hydrogen production device comprises a reversible solid oxide electrolytic hydrogen production device, a steam-water separator, a hydrogen storage tank and an oxygen storage tank, wherein the reversible solid oxide electrolytic hydrogen production device is connected with a steam generator, the steam-water separator, the hydrogen storage tank, the oxygen storage tank, an electric power storage device and a power conversion device, and the steam-water separator is connected with a reservoir; the power storage device is connected to the steam generator and the power conversion device. The reversible solid oxide electrolytic hydrogen producer has two use states, namely an electrolytic hydrogen producing state and a reverse fuel cell state. In the electrolytic hydrogen production state, the reversible solid oxide electrolytic hydrogen production device receives steam transmitted by the steam generator for electrolysis, generates hydrogen and oxygen, stores the hydrogen and the oxygen in the hydrogen storage tank and the oxygen storage tank, and can be directly applied to factories for hydrogen smelting to realize self-production and self-use, and can also be provided with a hydrogenation station in the factories for filling transportation vehicles in the factories; oxygen in the oxygen storage tank can supply oxygen-enriched air to scenes such as high-altitude mining factory working areas and dormitories, improves office environment, can ventilate underground mines, and improves working conditions. In the reverse fuel cell state, the hydrogen in the hydrogen storage tank and the oxygen in the oxygen storage tank are combusted reversely to generate electricity, and the electricity can be converted by the power conversion device and stored in the electric storage device.
The steam generator is an electrothermal integrated steam generator, and can evaporate steam by using the heat extracted by the geothermal utilization device when the heat is sufficient, and can evaporate steam by using the electric power stored by the electric power storage device when the heat is insufficient. The electric power stored in the electric storage device may be used not only for hydrogen production but also for power supply to other devices, and the present invention is not limited thereto.
The geothermal utilization device comprises a ground source heat pump structure, wherein the ground source heat pump structure is connected with the steam generator, and the ground source heat pump structure can recycle geothermal heat and transmit heat to the steam generator, so that a heat source is provided for the electrolysis hydrogen production of the reversible RSOC hydrogen production device. The mining wastewater utilization device comprises a water source heat pump structure, a water suction pump and a wastewater treatment structure, wherein the water suction pump is used for extracting mining wastewater, the water source heat pump structure is connected with the water suction pump and a steam generator, and is used for recovering the water heat in the mining wastewater and transmitting the heat to the steam generator so as to provide a heat source for the electrolytic hydrogen production of the reversible RSOC hydrogen production device. The waste water treatment structure is communicated with the water suction pump and the water storage tank, and can purify the mineral waste water after heat recovery, and convey the treated mineral waste water to the water storage tank as a water source of the steam generator; of course, if the treated mining wastewater meets the quality standard of human use or drinking, the treated mining wastewater can also be transmitted to the living application end of residents.
As previously described, geothermal heat and mining wastewater heat can be utilized to provide energy guarantees for hydrogen production, however, other clean energy sources still exist for utilization in the exploitation process of mines. Further, the mine multi-clean energy utilization system further comprises a solar energy utilization device, wherein the solar energy utilization device comprises a solar heat collector and a molten salt heat storage tank which are sequentially connected, and the molten salt heat storage tank is connected with the steam generator. The solar radiation energy is converted into heat energy through the solar heat collector, and the heat energy is stored through the fused salt heat storage tank. When the heat is sufficient, the electric power connection of the water vapor generator can be cut off, the water vapor enters the reversible solid oxide hydrogen production device to react only by the heat of the heat storage tank, the geothermal energy extracted by the geothermal energy utilization device and the hydrothermal energy extracted by the mining wastewater utilization device, the generated hydrogen and oxygen are respectively stored in the hydrogen storage tank and the oxygen storage tank, and the liquid water separated by the steam-water separator enters the water storage tank to be recycled. Furthermore, the mine multi-clean energy utilization system further comprises a wind-light power generation device, wherein the wind-light power generation device is connected with the power conversion device, and the power conversion device can store electric power into the electric storage device, so that the wind-light energy and the solar energy can be utilized efficiently.
Further, the mine multi-clean energy utilization system further comprises a power generation device, the power generation device comprises a generator, a steam turbine and an evaporator, the evaporator is connected with the molten salt heat storage tank, and the generator is connected with the power storage device. The molten salt heat storage tank is connected with the evaporator, heat energy can be transferred to working fluid (such as freon) with a low boiling point, so that the working fluid is boiled to generate steam, then the steam enters the steam turbine to drive the steam turbine to do work, the steam turbine drives the generator to generate electricity, mechanical energy is converted into electric energy, and finally the electric energy is stored in the electric storage device for use.
In addition, high-temperature flue gas is generated in the smelting process of the smelting plant, and contains abundant high-temperature waste heat. These high temperature waste heat are usually discharged to the atmosphere, causing huge energy waste and environmental pollution. However, reasonable recycling of the high-temperature waste heat not only can reduce energy consumption, but also can reduce emission, realize recycling of resources and improve the sustainability of industrial production. Specifically, the mine multi-clean energy utilization system further comprises a flue gas waste heat recovery device, wherein the flue gas waste heat recovery device comprises a flue gas waste heat recovery pipeline and a waste heat boiler which are sequentially connected, and the waste heat boiler is connected with the reservoir and the steam turbine. Through installing exhaust-heat boiler, can let in the water in the cistern in the exhaust-heat boiler, introduce exhaust-heat boiler with high temperature flue gas simultaneously and produce hot water or steam, steam can let in the steam turbine and store in power storage device after generating electricity, and the hot water of production can be used to mining area life hot water.
Further, the wastewater treatment structure comprises a primary treatment tank, a secondary treatment tank, a bottom mud tank and a disinfection tank, wherein the primary treatment tank is communicated with the bottom mud tank, and the secondary treatment tank is communicated with the disinfection tank and the water reservoir. Specifically, be equipped with doser, agitator and filter in the primary treatment pond, doser is used for throwing the reaction medicine, and the agitator is used for stirring waste water, and the filter is used for filtering waste water and obtains clear solution and mud, and the secondary treatment pond is used for handling the clear solution, and the mud pond is used for collecting mud, is equipped with reverse osmosis ware in the secondary treatment pond. The waste water produced in the mine production process is one of the main factors of mine environmental pollution, but the waste water contains solid suspended matters, heavy metal ions, flotation agents, greasy dirt and the like, cannot be directly applied, and is very important for effectively treating and recycling the mine waste water. The invention achieves the recycling of resources by introducing the wastewater into the primary treatment tank for purification treatment, carrying out primary precipitation, high-efficiency clarification and multi-medium filtration, and introducing the supernatant into the secondary treatment tank for treatment, and introducing the sludge into the sludge tank for recovery treatment. The ultrafiltered waste water is led into reverse osmosis device to further isolate organic matter, adhesive and microbe, and desalted and thinned. Wherein, part of water can be input into the reservoir, and part of water can enter the disinfection tank for disinfection and sterilization treatment and then be used for producing domestic water.
In order to synthesize hot water resources, the mine multi-clean-energy utilization system further comprises a hot water tank, a reservoir is connected with the molten salt heat storage tank, and the molten salt heat storage tank, the waste heat boiler and the hot water tank are connected. The water source in the impounding reservoir can be introduced into the molten salt heat storage tank to absorb heat, the hot water can be stored into the hot water tank for production and living needs, and correspondingly, when the water source in the impounding reservoir is introduced into the waste heat boiler, the generated hot water can also be stored into the hot water tank for use.
Specifically, the reversible solid oxide electrolytic hydrogen generator comprises a solid oxide fuel cell SOFC and a solid oxide electrolytic cell SOEC, wherein the solid oxide electrolytic cell SOEC is connected with a steam generator, a steam-water separator, a hydrogen storage tank, an electric storage device and an oxygen storage tank, and the solid oxide fuel cell SOFC is connected with the hydrogen storage tank, the oxygen storage tank and a power conversion device.
The mine multi-clean energy utilization system provided by the invention has the following advantages:
(1) Renewable energy sources, mine resources and reversible solid oxide hydrogen production are comprehensively utilized: wind-solar renewable energy power generation, mine wastewater, high-temperature waste gas of smelting plants, solar heat collection devices, geothermal resources and reversible solid oxide hydrogen production and power generation systems are effectively combined to form an electric-hydrogen/oxygen-heat-water comprehensive energy system, the problems of mine wastewater and geothermal resources waste and wind-solar resource volatility are solved, comprehensive utilization rates of remote mine waste resources, wind-solar energy and hydrogen energy are greatly improved, carbon emission is reduced, and a green mine is created.
(2) Expanding a diversified application end: the system adopts a set of reversible solid oxide hydrogen production and power generation system, and shares a set of core pile module, so that the system cost is reduced, the adaptability of wind-solar-photovoltaic fluctuation power supply is increased, the application scene of water, heat, electricity, hydrogen and oxygen diversification in mine environment is widened, the power generation and hot water application of high-temperature flue gas of a smelting plant are realized, the stable power supply to downstream users, hydrogen, oxygen, water and heat are realized, the resource is utilized to the maximum extent, and the economic benefit of enterprises is increased; meanwhile, the problems of mine electricity consumption, oxygen consumption and heat consumption are solved;
(3) The solar heat collection and geothermal device is synchronously prepared, so that the renewable energy utilization way is further improved, and the device is used for industrial, domestic electricity and heat loads of an electrolytic hydrogen production unit and a mining area, the system efficiency is improved, and the use cost is reduced.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The mine multi-clean energy utilization system is characterized by comprising a reversible RSOC hydrogen production device, a geothermal utilization device, a mining wastewater utilization device, a solar utilization device, a power generation device, a flue gas waste heat recovery device, a wind-solar power generation device, an electric storage device, a power conversion device and a reservoir;
the reversible RSOC hydrogen production device comprises a reversible solid oxide electrolytic hydrogen production device, a steam generator, a steam-water separator, a hydrogen storage tank and an oxygen storage tank, wherein the reversible solid oxide electrolytic hydrogen production device is connected with the steam generator, the steam-water separator, the hydrogen storage tank, the oxygen storage tank, the electric power storage device and the power conversion device, and the steam-water separator and the steam generator are connected with the water storage tank;
the geothermal utilization device comprises a ground source heat pump structure, wherein the ground source heat pump structure is connected with the steam generator and is used for recovering geothermal energy;
The mining wastewater utilization device comprises a water suction pump, a water source heat pump structure and a wastewater treatment structure, wherein the water suction pump is used for extracting mining wastewater, the water source heat pump structure is connected with the water suction pump and the steam generator and is used for recovering the water heat in the mining wastewater, and the wastewater treatment structure is communicated with the water suction pump and the reservoir and is used for purifying the mining wastewater and conveying the treated mining wastewater to the reservoir;
The solar energy utilization device comprises a solar heat collector and a molten salt heat storage tank which are sequentially connected, and the molten salt heat storage tank is connected with the steam generator;
the power generation device comprises a generator, a steam turbine and an evaporator, wherein the evaporator is connected with the molten salt heat storage tank, and the generator is connected with the power storage device;
the flue gas waste heat recovery device comprises a flue gas waste heat recovery pipeline and a waste heat boiler which are sequentially connected, and the waste heat boiler is connected with the reservoir and the steam turbine;
the wind-solar power generation device is connected with the power conversion device;
The electric storage device is connected with the steam generator and the power conversion device;
The hydrogen storage tank is also used for supplying hydrogen to a hydrogen smelting factory and a hydrogen adding station, and the oxygen storage tank is also used for supplying oxygen to high-altitude office areas, dormitories and mines;
The mine multi-clean energy utilization system further comprises a hot water tank, the reservoir is connected with the molten salt heat storage tank, and the molten salt heat storage tank, the waste heat boiler and the hot water tank are connected.
2. The mine multiple clean energy utilization system of claim 1, wherein the wastewater treatment structure comprises a primary treatment tank, a secondary treatment tank, a bottom mud tank and a disinfection tank, wherein the primary treatment tank is communicated with the bottom mud tank, and the secondary treatment tank is communicated with the disinfection tank and the water reservoir.
3. The mine multi-clean energy utilization system according to claim 2, wherein a chemical feeder, a stirrer and a filter are arranged in the primary treatment tank, the chemical feeder is used for feeding reaction chemicals, the stirrer is used for stirring wastewater, the filter is used for filtering the wastewater to obtain clear liquid and sludge, the secondary treatment tank is used for treating the clear liquid, and the bottom sludge tank is used for collecting sludge.
4. The mine multiple clean energy utilization system of claim 2, wherein a reverse osmosis device is disposed in the secondary treatment tank.
5. The mine multiple clean energy utilization system of claim 1, wherein the reversible solid oxide electrolytic hydrogen generator comprises a solid oxide fuel cell SOFC and a solid oxide electrolysis cell SOEC, the solid oxide electrolysis cell SOEC being connected to the steam generator, the steam-water separator, the hydrogen storage tank, the electricity storage device, and the oxygen storage tank, the solid oxide fuel cell SOFC being connected to the hydrogen storage tank, the oxygen storage tank, and the power conversion device.
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