Energy supply and gas supply integrated system of hydrogen-doped platform

Abstract

The invention discloses a hydrogen-doped platform energy supply and gas supply integrated system. A method comprises the following steps: S1, new energy supply; s2, electrolyzing hydrogen; s3, capturing carbon dioxide; s4, preparing natural gas; s5, a gas supply and power supply control system: inputting mixed hydrogen and natural gas into a gas mixing device to provide mixed gas for a hydrogen-doped transmission and distribution test and a combustion test; the overall use continuity of the device is guaranteed through two basic new energy power generation methods of solar power generation and wind power generation, water electrolysis operation is completed through new energy power generation, sufficient hydrogen is provided for the device, and therefore the use stability of the device is further improved, methane is generated through mixing of hydrogen and carbon dioxide, and the energy consumption of the device is reduced. And the gas is mixed with hydrogen in the hydrogen doping experiment area to form gas capable of being fully combusted, and the combustion test area ensures that heat energy is converted into electric energy to be continuously put into the device for use, so that an integrated energy supply and gas supply system is formed to ensure that the hydrogen doping platform can be stably and continuously used.

Description

Technical Field

[0001] The present invention relates to the technical field of multifunctional experimental systems for hydrogen - doped natural gas, and specifically to an integrated system for energy supply and gas supply on a hydrogen - doped platform. Background Art

[0002] The natural gas hydrogen - doping experimental platform is generally built in an open area far from the city. Such a site selection can ensure safety as much as possible. However, this site - selection method often brings some problems, such as the lack of municipal power supply, and there may not be suitable natural gas sources and hydrogen sources around the selected location.

[0003] The Chinese invention patent with the publication number CN 220819743 U discloses a multifunctional experimental system based on hydrogen - doped natural gas. Its technical solution includes: a gas replacement device is arranged on one side of a gas source storage device, the gas source storage device is connected to a device for configuring hydrogen - doped natural gas through a pipeline, and one side of the device for configuring hydrogen - doped natural gas is connected to a pressure - regulating and stabilizing device through a pipeline. It can achieve the easy disassembly and assembly of the experimental section pipe through the flange connection of the flange plate. By connecting the experimental pipe section with leakage diffusion holes to the experimental pipe section, a leakage diffusion experiment of hydrogen - doped natural gas can be carried out. Concentration detectors can be arranged near the experimental section pipeline to test the concentration distribution data of hydrogen - doped natural gas leakage diffusion and the time distribution data of leakage diffusion. The water - seal at the flange can be achieved through the polymer sealing gasket in the flange plate, and the hydrogen leakage situation under different hydrogen - doping ratios can be observed by the bubble - method.

[0004] The above - mentioned published literature still cannot guarantee the energy supply and gas supply requirements for the multifunctional experimental system of hydrogen - doped natural gas. Therefore, an integrated system for energy supply and gas supply on a hydrogen - doped platform is needed now. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated system for energy supply and gas supply on a hydrogen - doped platform, which can ensure the long - term use of the test platform by setting solar energy, wind power generation, thermal power generation and its own mixed gas supply, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An integrated system for energy supply and gas supply on a hydrogen - doped platform, including the following steps:

[0007] S1. New - energy energy supply: The whole device obtains electric energy by using solar energy and wind power generation. Through the combined use of solar energy and wind power generation, it can supply power normally through solar energy when the sunlight is sufficient, and complete the power supply of the device through wind power generation on rainy and cloudy days. The continuous supply of electric energy for the device is completed by selecting different weather conditions for use;

[0008] S2. Electrolyzing hydrogen: After new - energy energy supply, hydrogen is obtained by using electrolyzed water technology, and the hydrogen obtained after electrolysis is shunted and input into the device for use;

[0009] S3. Carbon dioxide capture: The device continuously captures carbon dioxide in the air through DAC and inputs the carbon dioxide into the device for use in combination with a group of hydrogen after flow splitting.

[0010] S4. Preparation of natural gas: Methane gas is prepared by hydrogenating carbon dioxide, and the obtained methane gas is input back into the device for use.

[0011] S5. Gas supply and power supply control system: Hydrogen and natural gas are mixed and input into the gas mixing device to provide mixed gas for hydrogen-doped transmission and distribution tests and combustion tests. At the same time, renewable power generation supplies power to the DAC device and the hydrogen-doped experimental area.

[0012] Preferably, the electric energy obtained from solar energy and wind energy in S1 is stored in the energy storage unit. At the same time, the stored current is split for use. Part of the electric energy is used to supply power to the electrolysis system, and the remaining current is used to supply power to the hydrogen-doped experimental area in S5 to complete the mixing, transmission, and combustion operations of the gas.

[0013] Preferably, the heat generated during the operation of the combustion test area is converted into electric energy through the temperature difference between high temperature and low temperature. This conversion process does not require an intermediate medium and directly converts heat energy into electric energy, which is then input into the energy storage unit for storage to address the issue of improving the overall power output of the device in cooperation with the new energy supply operation in S1.

[0014] Preferably, for hydrogen production by electrolysis in S2, the hydrogen production power supply rotation can be carried out according to the stored power in the energy storage unit. The device usually directly selects solar energy and wind energy to assist the energy storage unit for high-temperature electrolysis to reduce energy consumption. When the solar and wind power generation is average, the method of high-temperature electrolysis of water vapor is used to assist the electrolysis of water operation to further reduce the energy consumption of water electrolysis.

[0015] Preferably, there are two groups of air traps in S3. The two groups of air traps can be rotated in various usage modes, including (1) independent use of a single group of air traps to avoid damage to a single group of air traps and the inability of the device to capture carbon dioxide normally, resulting in the device being unable to operate continuously in a cycle; (2) alternating use of the two groups of air traps to share the usage pressure during peak periods and improve the overall service life and stability of the device; (3) auxiliary use of another group of air traps during the use of a single group of air traps, which also reduces the usage pressure of a single group of air traps and improves the sustainability of carbon dioxide capture, enabling the device as a whole to continuously complete the energy supply and gas supply operations and enabling the natural gas hydrogen-doped experimental platform to continue experimental use.

[0016] Preferably, after the natural gas is prepared in S4, it is transported through a hydrogen blending pipeline. A one-way valve and a pressurizing device are arranged in the middle of the hydrogen blending pipeline to control the transportation volume and intensity of the natural gas, so that the intensity of the natural gas fed into the natural gas-hydrogen blending equipment can be adjusted, and the gas supply volume of the natural gas in the hydrogen blending experimental area can be stably controlled. At the same time, another group of hydrogen gas separated during the electrolysis of water is sent into the natural gas-hydrogen blending equipment through a pure hydrogen pipeline for full mixing. The proportion of hydrogen gas incorporated into the natural gas is 3% to 30%.

[0017] Preferably, the pure hydrogen pipeline is selected from any one of 316L stainless steel and pH13-8Mo alloy, and the inner wall of the pure hydrogen pipeline is coated with an anti-corrosion material such as any one or more of polyurethane, epoxy resin, and alumina. The hydrogen blending pipeline is selected from any one of 316L stainless steel and pH13-8Mo alloy. The inner wall of the hydrogen blending pipeline is treated by any one of passivation treatment and chromium plating treatment to form a stable inorganic compound film, which plays an anti-corrosion role.

[0018] Preferably, the hydrogen blending experimental area in S5 includes a natural gas-hydrogen blending equipment for mixing natural gas and hydrogen gas, a distribution and testing area for sending gas to the combustion testing area, and a combustion testing area for combustion power generation. Among them, the mixing ratio and feeding ratio of the natural gas and hydrogen gas are controlled by the natural gas-hydrogen blending equipment and the distribution and testing area to ensure stable and continuous combustion power generation work in the combustion testing area, and stably convert heat energy into electrical energy for storage in the energy storage area, so that the overall device can stably complete multi-group coordinated power supply through photovoltaic power generation, wind power generation, and thermal power generation.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The overall device uses two new energy power generation methods of basic solar energy and wind power generation to ensure the continuity of the overall use of the device, and completes the electrolysis of water through new energy power generation to provide sufficient hydrogen gas for the device, thereby further improving the stability of the device. Methane is generated by mixing hydrogen gas and carbon dioxide, and is mixed with hydrogen gas in the hydrogen blending experimental area to form a gas that can burn sufficiently, and the combustion testing area is used to ensure that the heat energy is converted into electrical energy and continued to be input into the device for use, thereby forming an integrated energy supply and gas supply system to ensure the stable and continuous use of the hydrogen blending platform in an open area far from the city. Brief Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the system of the present invention. Detailed Embodiments

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0024] As Figure 1 shown, the present invention provides a hydrogen-doped platform energy supply and gas supply integrated system, including the following steps:

[0025] S1. New energy supply: The whole device generates electric energy by using solar energy and wind power. Through the coordinated use of solar energy and wind power, it can supply power normally through solar energy when there is sufficient sunlight, and complete the power supply of the device through wind power on rainy and cloudy days. Through the selection and use of different weather conditions, the continuous supply of electric energy for the device is completed. The electric energy obtained from solar energy and wind energy is stored in the energy storage unit. At the same time, the stored current is shunted for use. Part of the electric energy is used to supply power to the electrolysis system, and the remaining current is used to supply power to the hydrogen-doped experimental area to complete the mixing, transportation, and combustion operations of the gas. The heat generated by the operation of the combustion test area generates heat through the temperature difference between high temperature and low temperature, and converts the moving heat energy into electric energy. This conversion process does not require an intermediate medium, directly converts heat energy into electric energy and inputs the electric energy into the energy storage unit for storage to solve the problem of improving the overall power output of the device in cooperation with new energy supply operations;

[0026] S2. Electrolyze hydrogen: After new energy supply, hydrogen is obtained by using water electrolysis technology, and the hydrogen obtained after electrolysis is shunted and input into the device for use. For hydrogen production by electrolysis, the rotation of hydrogen production power supply can be carried out according to the stored power in the energy storage unit. The device usually directly selects solar energy and wind energy to assist the energy storage unit for high-temperature electrolysis to reduce energy consumption. When the solar energy and wind power generation are average, the method of high-temperature electrolysis of water vapor is used to assist the electrolysis of water operation to further reduce the energy consumption of electrolyzing water;

[0027] S3. Carbon Dioxide Capture: The device continuously captures carbon dioxide from the air through DAC and inputs the carbon dioxide into the device for use in combination with a group of hydrogen gas after splitting. There are two sets of air traps, and the two sets of air traps can be rotated in various usage modes, including (1) independent use of a single set of air traps to prevent the device from being unable to capture carbon dioxide normally due to the damage of a single set of air traps, resulting in the device being unable to perform continuous cyclic operation; (2) alternating use of the two sets of air traps to share the usage pressure during peak periods, improving the overall service life and overall usage stability of the device; (3) auxiliary use of the other set of air traps during the use of a single set of air traps, also reducing the usage pressure of a single set of air traps, improving the sustainability of carbon dioxide capture, enabling the device as a whole to continuously complete the operations of energy supply and gas supply, and enabling the natural gas hydrogen blending experimental platform to be continuously used for experiments;

[0028] S4. Preparation of Natural Gas: Methane gas is prepared by hydrogenating carbon dioxide, and the obtained methane gas is input back into the device for use. After the natural gas is prepared in S4, it is transported through a hydrogen blending pipeline. A one-way valve and a pressurizing device are provided in the middle of the hydrogen blending pipeline to control the transportation volume and transportation intensity of natural gas, so that the intensity of natural gas fed into the natural gas hydrogen blending and mixing equipment can be adjusted, and the gas supply volume of natural gas in the hydrogen blending experimental area can be stably controlled. At the same time, another group of hydrogen gas split off during the electrolysis of water is fed into the natural gas hydrogen blending and mixing equipment through a pure hydrogen pipeline for full mixing. The proportion of hydrogen gas incorporated into natural gas is 3% to 30%. The pure hydrogen pipeline is selected from any one of 316L stainless steel and pH13 - 8Mo alloy, and the inner wall of the pure hydrogen pipeline is coated with any one or more of anti-corrosion materials such as polyurethane, epoxy resin, and alumina. The hydrogen blending pipeline is selected from any one of 316L stainless steel and pH13 - 8Mo alloy, and the inner wall of the hydrogen blending pipeline is treated with any one of passivation treatment and chromium plating treatment to form a stable inorganic compound film to play an anti-corrosion role;

[0029] S5. Gas Supply and Power Supply Control System: Hydrogen gas and natural gas are mixed and input into a mixing device to provide mixed gas for hydrogen blending transmission and distribution testing and combustion testing. At the same time, renewable power generation supplies power to the DAC device and the hydrogen blending experimental area. The hydrogen blending experimental area includes a natural gas hydrogen blending and mixing equipment for mixing natural gas and hydrogen gas, a transmission and distribution testing area for sending gas to the combustion testing area, and a combustion testing area for performing combustion power generation. Among them, the mixing ratio and feeding ratio of natural gas and hydrogen gas are controlled by the natural gas hydrogen blending and mixing equipment and the transmission and distribution testing area to ensure stable and continuous combustion power generation work in the combustion testing area, and stably convert heat energy into electrical energy for storage in the energy storage area, enabling the device as a whole to stably complete multi-group coordinated power supply through photovoltaic power generation, wind power generation, and thermal power generation.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated system for energy supply and gas supply with hydrogen doping platform, characterized in that, It includes the following steps: S1. New energy supply: The whole device obtains electric energy by using solar energy and wind power generation. Through the combined use of solar energy and wind power generation, it can supply power normally through solar energy when there is sufficient sunlight, and complete the power supply of the device through wind power generation on rainy and cloudy days. The continuous supply of electric energy for the device is completed by selecting different weather conditions for use; S2. Electrolyzing hydrogen: After new energy supply, hydrogen is obtained by using water electrolysis technology, and the hydrogen obtained after electrolysis is shunted and input into the device for use; S3. Carbon dioxide capture: The device continuously captures carbon dioxide in the air through DAC, and inputs the carbon dioxide into the device to cooperate with a group of shunted hydrogen for use; S4. Preparing natural gas: Methane gas is prepared by hydrogenating carbon dioxide, and the obtained methane gas is input back into the device for use; S5. Gas supply and power supply control system: Hydrogen and natural gas are mixed and input into the gas mixing device to provide mixed gas for hydrogen-blended transmission and distribution testing and combustion testing. At the same time, renewable power generation supplies power to the DAC device and the hydrogen-blended experimental area.

2. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 1, wherein: The electric energy obtained through solar energy and wind energy in S1 is stored in the energy storage unit. At the same time, the stored current is shunted for use. Part of the electric energy is used to supply power to the electrolysis system, and the remaining current is used to supply power to the hydrogen-blended experimental area in S5 to complete the mixing, transmission, and combustion operations of the gas.

3. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 2, characterized in that: The heat generated during the operation of the combustion test area is converted into electric energy through the temperature difference between high temperature and low temperature. This conversion process does not require an intermediate medium, directly converts heat energy into electric energy, and inputs the electric energy into the energy storage unit for storage to solve the problem of improving the overall power output of the device in cooperation with the new energy supply operation in S1.

4. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 3, characterized in that: For the electrolytic hydrogen production in S2, the hydrogen production power supply can be rotated according to the stored power in the energy storage unit. The device usually directly selects solar energy and wind energy to assist the energy storage unit for high-temperature electrolysis to reduce energy consumption. When the solar energy and wind power generation are average, the method of high-temperature electrolysis of water vapor is used to assist the electrolysis of water operation to further reduce the energy consumption of electrolyzing water.

5. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 4, wherein: There are two groups of air traps in S3. The two groups of air traps can be rotated in various ways, including (1) single-group air traps are used independently to avoid the device being unable to capture carbon dioxide normally due to the damage of a single-group air trap, resulting in the device being unable to perform continuous cyclic operation; (2) the two groups of air traps are used alternately to share the usage pressure during peak periods, improving the overall service life and stability of the device; (3) during the use of a single-group air trap, the other group of air traps is used for assistance, also reducing the usage pressure of the single-group air trap, improving the sustainability of carbon dioxide capture, enabling the device to continuously complete the energy supply and gas supply operations, and enabling the natural gas hydrogen-blended experimental platform to be continuously used for experiments.

6. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 5, wherein: After the natural gas is prepared in S4, it is transported through the hydrogen-doped pipeline. A check valve and a pressurizing device are arranged in the middle of the hydrogen-doped pipeline to control the transportation volume and intensity of the natural gas, so that the intensity of the natural gas fed into the natural gas hydrogen-doped mixing equipment can be adjusted, and the gas supply volume of the natural gas in the hydrogen-doped experimental area can be stably controlled. At the same time, another group of hydrogen gas diverted during the electrolysis water operation is fed into the natural gas hydrogen-doped mixing equipment through the pure hydrogen pipeline for full mixing, and the proportion of hydrogen gas doped into the natural gas is 3% to 30%.

7. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 6, characterized in that: The pure hydrogen pipeline is selected from any one of 316L stainless steel and pH13-8Mo alloy, and the inner wall of the pure hydrogen pipeline is coated with any one or more of anticorrosive materials such as polyurethane, epoxy resin, and alumina. The hydrogen-doped pipeline is selected from any one of 316L stainless steel and pH13-8Mo alloy, and the inner wall of the hydrogen-doped pipeline is treated by any one of passivation treatment and chromium plating treatment to form a stable inorganic compound film, which plays an anticorrosive role.

8. The integrated hydrogen-doped platform energy supply and gas supply system according to claim 7, characterized in that: In S5, the hydrogen-doped experimental area includes a natural gas hydrogen-doped mixing equipment for mixing natural gas and hydrogen, a distribution and transportation test area for supplying gas to the combustion test area, and a combustion test area for combustion power generation. Among them, the mixing ratio and feeding ratio of the natural gas and hydrogen are controlled by the natural gas hydrogen-doped mixing equipment and the distribution and transportation test area to ensure stable and continuous combustion power generation work in the combustion test area, and stably convert heat energy into electrical energy and store it in the energy storage area, so that the whole device can stably complete multi-group coordinated power supply through photovoltaic power generation, wind power generation, and thermal power generation.

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