A hydrogen energy city structure based on high temperature electrolysis hydrogen production

Abstract

The present invention relates to a hydrogen energy city structure based on high-temperature electrolysis hydrogen production, which includes a renewable energy power generation device that collects a first renewable energy for power generation; a renewable energy heating device that collects a second renewable energy for generating high-temperature molten salt; a molten salt heat storage device for storing high-temperature molten salt connected downstream of the renewable energy heating device; a high-temperature electrolysis hydrogen production device for generating hydrogen is respectively connected downstream of the renewable energy power generation device and the molten salt heat storage device to produce hydrogen, wherein the electric energy delivered by the renewable energy power generation device and the heat energy delivered by the molten salt heat storage device are matched and supplied to the high-temperature electrolysis hydrogen production device in real time; a hydrogen storage device for storing hydrogen is connected downstream of the high-temperature electrolysis hydrogen production device; and a hydrogen transport device for transporting hydrogen is connected downstream of the hydrogen storage device. According to the hydrogen energy city structure based on high-temperature electrolysis hydrogen production of the present invention, various renewable energy sources in nature are flexibly utilized through the high-temperature electrolysis hydrogen production device.

Description

Technical Field

[0001] The present invention relates to renewable energy, and more particularly to a hydrogen energy city structure based on high-temperature electrolysis to produce hydrogen. Background Art

[0002] The development of human society is accompanied by a large-scale increase in energy consumption. Transportation, industrial production, electricity consumption, heating, and refrigeration all consume a large amount of fossil energy. The use of fossil fuels has brought us major environmental problems and seriously affected human life. The large-scale emission of CO2 has caused global warming. The sulfur oxides or nitrogen oxides produced after combustion undergo complex chemical reactions in the atmosphere and fall to the ground as acid rain. PM2.5 inhalable particles also pose a huge hidden danger to the human living environment. Therefore, people urgently need to change the existing energy utilization pattern dominated by fossil energy and increase environmentally friendly clean energy. Build a new clean energy system. Summary of the invention

[0003] In order to solve the problem of energy waste in the above-mentioned prior art, the present invention provides a hydrogen energy city structure based on high-temperature electrolysis to produce hydrogen.

[0004] According to the hydrogen energy city structure based on high-temperature electrolysis hydrogen production of the present invention, it includes renewable energy power generation equipment that collects a first renewable energy for power generation; renewable energy heating equipment that collects a second renewable energy for generating high-temperature molten salt; molten salt heat storage equipment for storing the generated high-temperature molten salt, which is connected downstream of the renewable energy heating equipment; high-temperature electrolysis hydrogen production equipment for generating hydrogen, which is respectively connected downstream of the renewable energy power generation equipment and the molten salt heat storage equipment to utilize the electric energy transmitted by the renewable energy power generation equipment and the thermal energy transmitted by the molten salt heat storage equipment to generate hydrogen, wherein the electric energy transmitted by the renewable energy power generation equipment and the thermal energy transmitted by the molten salt heat storage equipment are matched and supplied to the high-temperature electrolysis hydrogen production equipment in real time; hydrogen storage equipment for storing the generated hydrogen, which is connected downstream of the high-temperature electrolysis hydrogen production equipment; and hydrogen transport equipment for transporting the stored hydrogen, which is connected downstream of the hydrogen storage equipment.

[0005] Preferably, the hydrogen energy city structure also includes an ammonia absorption refrigeration device, which is connected downstream of the high-temperature electrolysis hydrogen production equipment to transport the 300-500°C heat energy generated in the hydrogen production process to the ammonia absorption refrigeration equipment for refrigeration.

[0006] Preferably, the hydrogen energy city structure further comprises a solid oxide fuel cell power supply device, which is connected downstream of the hydrogen transport device to transport the hydrogen in the hydrogen transport device to the solid oxide fuel cell power supply device for power generation.

[0007] Preferably, the hydrogen energy city structure also includes a hydrogen refueling station, wherein the hydrogen refueling station is connected downstream of the hydrogen transmission equipment to transport the hydrogen in the hydrogen transmission equipment to the hydrogen refueling station for gas supply, and the hydrogen refueling station is connected downstream of the solid oxide fuel cell power supply equipment so that the solid oxide fuel cell power supply equipment supplies power to the hydrogen refueling station.

[0008] Preferably, the hydrogen energy city structure also includes a large-scale chemical plant that consumes hydrogen, wherein the large-scale chemical plant that consumes hydrogen is connected downstream of the hydrogen transportation equipment to transport the hydrogen in the hydrogen transportation equipment to the large-scale chemical plant that consumes hydrogen for use as raw materials for the chemical plant, and the large-scale chemical plant that consumes hydrogen is connected downstream of the solid oxide fuel cell power supply equipment so that the solid oxide fuel cell power supply equipment supplies power to the large-scale chemical plant that consumes hydrogen.

[0009] Preferably, the hydrogen energy city structure also includes urban residential and commercial communities, wherein the urban residential and commercial communities are connected downstream of the hydrogen transmission equipment to transport the hydrogen in the hydrogen transmission equipment to the urban residential and commercial communities for heating, and the urban residential and commercial communities are connected downstream of the solid oxide fuel cell power supply equipment so that the solid oxide fuel cell power supply equipment supplies power to the urban residential and commercial communities.

[0010] Preferably, the first renewable energy source is wind energy, solar photovoltaic energy, hydro energy and / or tidal energy.

[0011] Preferably, the second renewable energy source is solar thermal energy, geothermal energy and / or nuclear energy.

[0012] According to the hydrogen energy city structure based on high temperature electrolysis hydrogen production of the present invention, various renewable energy sources in nature can be flexibly used through high temperature electrolysis hydrogen production equipment, and thermal energy (solar thermal energy, geothermal energy, nuclear energy) can be directly absorbed and converted into hydrogen energy without converting all of it into electrical energy. The operating temperature of the high temperature electrolysis hydrogen production equipment is above 700 ° C, and the waste heat generated is circulated and absorbed inside the equipment. The waste heat that can be generated is of high quality and can be used to drive large absorption refrigeration cold storage to provide guarantee for the low temperature logistics supply of fresh food in the city. Hydrogen is used for power generation through solid oxide fuel cell power supply equipment, meets the fuel requirements for transportation through hydrogen refueling stations, is used for heating through urban residential and commercial communities, and meets the raw material requirements of chemical plants through large hydrogen-consuming chemical plants. Moreover, the solid oxide fuel cell power supply equipment adopts solid oxide fuel cells. This technology is the reverse operation of the principle of high temperature electrolysis technology. In principle, the stacks for hydrogen production and power generation are universal, which is conducive to extending the service life of the stacks and is more economical. Urban design meets people's food, housing and transportation in one step. Furthermore, the city does not have the phenomenon of wind and solar power abandonment, the energy utilization rate is high, the chemical plant provides a large number of jobs for the city, and at the same time can achieve "zero carbon emission" urban operation and development. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of a hydrogen energy city structure based on high-temperature electrolysis hydrogen production according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.

[0015] like Figure 1 As shown, according to a preferred embodiment of the present invention, the hydrogen energy city structure based on high-temperature electrolysis hydrogen production includes renewable energy power generation equipment 1, renewable energy heating equipment 2, molten salt heat storage equipment 3, high-temperature electrolysis hydrogen production equipment 4, ammonia absorption refrigeration equipment 5, hydrogen storage equipment 6, hydrogen transmission equipment 7, solid oxide fuel cell power supply equipment 8, hydrogen filling station 9, large-scale hydrogen-consuming chemical plant 10 and urban residential and commercial community 11, wherein the renewable energy power generation equipment 1 collects renewable energy (such as wind energy and water energy, etc.) to generate electricity, and the renewable energy heating equipment 2 collects renewable energy (such as solar energy and nuclear energy, etc.) to generate high-temperature molten salt. The high-temperature molten salt is stored in a molten salt heat storage device 3. The renewable energy power generation device 1 and the molten salt heat storage device 3 transmit electric energy and heat energy to the high-temperature electrolytic hydrogen production device 4 to produce hydrogen in a certain proportion. The heat energy of 300-500°C generated in the hydrogen production process is transported to the ammonia absorption refrigeration device 5 for refrigeration. The generated hydrogen is stored and transported through a hydrogen storage device 6 and a hydrogen transmission device 7. The hydrogen is supplied to a solid oxide fuel cell power supply device 8, a hydrogen filling station 9, a large-scale hydrogen-consuming chemical plant 10 and an urban residential and commercial community 11, respectively, for power generation, gas supply, use as a chemical plant raw material and industrial and commercial hydrogen heating.

[0016] Specifically, the direct current generated by the renewable energy power generation equipment 1 is input into the high-temperature electrolytic hydrogen production equipment 4, the renewable energy heating equipment 2 generates high-quality heat, and the heat energy is buffered by the molten salt heat storage equipment 3 and input into the high-temperature electrolytic hydrogen production equipment 4 as needed. The high-temperature electrolytic hydrogen production equipment 4 prepares high-quality hydrogen, which is stored in the hydrogen storage equipment 6. The hydrogen is supplied to the solid oxide fuel cell power supply equipment 8, the hydrogen refueling station 9, the large-scale hydrogen-consuming chemical plant 10 and the urban residential and commercial community 11 through the hydrogen transmission equipment 7. The solid oxide fuel cell power supply equipment 8 supplies electricity to the hydrogen refueling station 9, the large-scale hydrogen-consuming chemical plant 10 and the urban residential and commercial community 11. The hydrogen received by the urban residential and commercial community 11 is used for heating. The high-temperature electrolytic hydrogen production equipment 4 will also produce 300°C to 500°C waste heat steam, which is supplied to the ammonia absorption refrigeration equipment 5. The large-scale ammonia absorption refrigeration equipment 5 is used for large-scale fresh food cold storage in the city. The hydrogen refueling station 9 provides hydrogen fuel for urban transportation. The large-scale hydrogen-consuming chemical plant 10 can create jobs for urban residents.

[0017] The renewable energy power generation equipment 1 is configured according to the type of energy selected, and can select any one or a combination of wind energy, solar photovoltaic, hydropower, and tidal energy power generation in combination with local natural resources and geographical environment.

[0018] The renewable energy heating device 2 is configured according to the type of energy selected, and can use any one or a combination of solar thermal energy, geothermal energy, and nuclear energy according to local natural resources and geographical environment.

[0019] The molten salt heat storage device 3 uses the molten salt heat storage technology to store and supply heat energy on demand, and matches it in real time with the high-temperature hydrogen production electricity supplied by the renewable energy power generation device 1. In other words, the molten salt heat storage device 3 can store unstable new energy (such as wind energy, solar energy, hydropower or tidal energy for producing electricity, and solar energy, geothermal energy or nuclear energy for producing heat energy), to ensure that the required heat energy is supplied to the high-temperature electrolytic hydrogen production device 4 on demand, and the heat energy supply follows the renewable energy power generation device 1 on demand, avoiding the impact of new energy fluctuations and the problem of energy supply mismatch between the renewable energy power generation device 1 and the renewable energy heating device 2, so that heat energy and electric energy can be synchronously supplied to the high-temperature electrolytic hydrogen production device 4 on demand, and at the same time, the high-temperature operating equipment in the high-temperature hydrogen production device 4 can be insulated to ensure the service life and equipment safety of the high-temperature hydrogen production device 4, so as to absorb unstable new energy through the high-temperature hydrogen production device 4 and supply downstream hydrogen energy consumption on demand.

[0020] The ammonia absorption refrigeration equipment 5 utilizes ammonia absorption refrigeration to recover and reuse waste heat, which not only takes into account the city's electricity and heat needs, but also meets the city's cooling needs.

[0021] Real-time monitoring of hydrogen and electricity consumption in hydrogen refueling stations 9, large hydrogen-consuming chemical plants 10, and urban residential and commercial communities 11 can be carried out according to energy demand, and surplus hydrogen energy can be exported to other hydrogen-consuming areas.

[0022] According to the hydrogen energy city structure based on high-temperature electrolysis hydrogen production of the present invention, the electric energy output from the renewable energy power generation equipment 1 and the thermal energy output from the molten salt heat storage equipment 3 enter the high-temperature hydrogen production equipment 4 and are converted into hydrogen energy, realizing the storage of electric energy and thermal energy, thereby efficiently utilizing renewable energy and using clean hydrogen energy to store electric energy and thermal energy. The size of the city can be scaled and adjusted according to the population, and the total amount of renewable energy resources available can meet the energy demand under the size of the city. The entire city can meet the food, electricity, thermal energy and travel needs of life, and achieve energy self-sufficiency without greenhouse gas production. Specifically, the city is an independent microgrid structure and does not require external power input. In particular, local electricity can meet all the city's electricity needs, and surplus electricity is stored through hydrogen.

[0023] Compared with the existing technology that uses ordinary water electrolysis hydrogen production technology and proton exchange membrane fuel cell power generation technology, the present application covers the specific applications of electricity, heat and cold energy in cities with a population of more than 500,000 through high-temperature hydrogen production equipment 4 and solid oxide fuel cell power supply equipment 8, including hydrogen refueling stations 9, large-scale hydrogen-consuming chemical plants 10 and urban residential and commercial communities 11.

[0024] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A hydrogen energy city structure based on high temperature electrolysis hydrogen production, characterized in that: The hydrogen city structure includes: A renewable energy power generation device (1) for collecting a first renewable energy for power generation, the first renewable energy comprising wind energy and / or tidal energy; A renewable energy heating device (2) for collecting a second renewable energy source for producing high-temperature molten salt, wherein the second renewable energy source includes geothermal energy; A molten salt heat storage device (3) for storing the generated high-temperature molten salt, which is connected downstream of the renewable energy heating device (2); A high-temperature electrolytic hydrogen production device (4) for producing hydrogen, which is respectively connected downstream of the renewable energy power generation device (1) and the molten salt heat storage device (3) to produce hydrogen using the electric energy delivered by the renewable energy power generation device (1) and the thermal energy delivered by the molten salt heat storage device (3), wherein the electric energy delivered by the renewable energy power generation device (1) and the thermal energy delivered by the molten salt heat storage device (3) are matched and supplied to the high-temperature electrolytic hydrogen production device (4) in real time; A hydrogen storage device (6) for storing the generated hydrogen, which is connected downstream of the high-temperature electrolytic hydrogen production device (4); and A hydrogen transport device (7) for transporting the stored hydrogen, which is connected downstream of the hydrogen storage device (6); The hydrogen energy city structure also includes an ammonia absorption refrigeration device (5), which is connected downstream of the high-temperature electrolytic hydrogen production device (4) to transport the 300-500° C. heat energy generated during the hydrogen production process to the ammonia absorption refrigeration device (5) for refrigeration; The hydrogen energy city structure also includes a solid oxide fuel cell power supply device (8), which is connected downstream of the hydrogen transport device (7) to transport hydrogen in the hydrogen transport device (7) to the solid oxide fuel cell power supply device (8) for power generation; The hydrogen energy city structure also includes a hydrogen refueling station (9), a large-scale hydrogen-consuming chemical plant (10), and an urban residential and commercial community (11).

2. The hydrogen energy city structure according to claim 1 is characterized in that: The hydrogen refueling station (9) is connected downstream of the hydrogen transport device (7) to transport the hydrogen in the hydrogen transport device (7) to the hydrogen refueling station (9) for gas supply, and the hydrogen refueling station (9) is connected downstream of the solid oxide fuel cell power supply device (8) so that the solid oxide fuel cell power supply device (8) supplies power to the hydrogen refueling station (9).

3. The hydrogen energy city structure according to claim 1, characterized in that: The large-scale chemical plant (10) consuming hydrogen is connected downstream of the hydrogen transport device (7) so as to transport the hydrogen in the hydrogen transport device (7) to the large-scale chemical plant (10) consuming hydrogen to be used as a raw material for the chemical plant. The large-scale chemical plant (10) consuming hydrogen is connected downstream of the solid oxide fuel cell power supply device (8) so that the solid oxide fuel cell power supply device (8) supplies power to the large-scale chemical plant (10) consuming hydrogen.

4. The hydrogen energy city structure according to claim 1, characterized in that: The urban residential and commercial community (11) is connected downstream of the hydrogen transport device (7) so as to transport the hydrogen in the hydrogen transport device (7) to the urban residential and commercial community (11) for heating, and the urban residential and commercial community (11) is connected downstream of the solid oxide fuel cell power supply device (8) so that the solid oxide fuel cell power supply device (8) supplies power to the urban residential and commercial community (11).

5. The hydrogen energy city structure according to claim 1, characterized in that: The first renewable energy source also includes solar photovoltaic and / or hydropower.

6. The hydrogen energy city structure according to claim 1, characterized in that: Secondary renewable energy sources also include solar thermal and / or nuclear energy.

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