Low-temperature plasma catalysis energy storage technology and equipment

Abstract

The application discloses a kind of low-temperature plasma catalysis energy storage technology and equipment, it is related to renewable energy utilization, plasma catalysis and electric energy chemical storage field.A kind of low-temperature plasma catalysis energy storage technology, mainly includes the following operating steps: step one, equipment power is connected to public power grid or renewable power source, start control cabinet and central control screen, check system self-check item, by electrolytic cell power start electrolytic cell and flow pump;Step two, by pure water supplier to pure water tank supplies electrolytic pure water, and flow pump is sent to electrolytic cell in pure water tank in pure water;The application is integrated by electrolytic water hydrogen production system and multi-channel parallel dielectric barrier discharge plasma catalytic reactor module, with renewable power as input, after hydrogen production, nitrogen or carbon dioxide and other gas distribution are introduced into reaction system, by low-temperature plasma and catalysis synergistic effect conversion generation ammonia, methanol, methane and other high-energy chemical products, realize electric energy chemical storage.

Description

Technical Field

[0001] This invention belongs to the fields of renewable energy utilization, plasma catalysis and electrochemical energy storage technology, specifically, it relates to a low-temperature plasma catalytic energy storage technology and equipment. Background Technology

[0002] As the global energy structure shifts towards low-carbon and clean energy, the installed capacity of renewable energy sources such as wind and solar power continues to grow.

[0003] However, renewable energy power generation is characterized by significant intermittency and volatility, making it difficult to match its power generation capacity with the real-time electricity load. This leads to frequent instances of wind and solar power curtailment, severely restricting the high-proportion consumption of renewable energy.

[0004] Electrochemical energy storage and water electrolysis for hydrogen production are important approaches to solving the problem of renewable power consumption.

[0005] Among them, water electrolysis to produce hydrogen can convert surplus electrical energy into hydrogen energy. Compared with direct hydrogen storage, further converting hydrogen into stable chemicals such as ammonia, methane or methanol can not only significantly improve energy density, but also utilize existing chemical infrastructure for storage, transportation and use. It is considered a more promising method of electrical energy storage and conversion for engineering applications.

[0006] However, traditional ammonia synthesis, methanation, and methanol synthesis processes typically rely on high-temperature and high-pressure reaction conditions, resulting in high energy consumption, long start-up times, and poor adjustment flexibility, making it difficult to adapt to the rapid fluctuations and intermittent operation characteristics of renewable energy power. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a renewable energy utilization, plasma catalysis and electrochemical energy storage that can overcome or at least partially solve the above problems.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this invention is: a low-temperature plasma catalytic energy storage technology, which mainly includes the following operation steps:

[0009] Step 1: Connect the equipment power supply to the public power grid or renewable power source, start the control cabinet and central control panel, check the system self-test items, and start the electrolytic cell and liquid flow pump by the electrolytic cell power supply;

[0010] Step 2: The pure water for electrolysis is supplied to the pure water tank through the pure water purifier. The liquid flow pump delivers the pure water in the pure water tank to the electrolysis cell. The power supply of the electrolysis cell provides the electrolysis working power to the electrolysis cell, so that the electrolysis cell electrolyzes the input pure water into hydrogen and oxygen. The hydrogen gas with water vapor produced by electrolysis is delivered to the gas-liquid separator to complete the initial dehydration treatment of hydrogen.

[0011] Step 3: The hydrogen gas that has been initially dehydrated by the gas-liquid separator is sent to the drying tube for deep drying to obtain dry hydrogen gas. The dry hydrogen gas flows through the hydrogen flow meter and is then sent to the hydrogen storage tank for storage. The output pressure of the hydrogen gas from the hydrogen storage tank is regulated by the pressure reducing valve to ensure the stability of the hydrogen output flow rate.

[0012] Step 4: The hydrogen gas output from the hydrogen storage tank after depressurization is mixed with the gas from the gas mixing cylinder and adjusted proportionally by a flow meter. The gas pressure is monitored at the output of the flow meter, and the solenoid valve controls the on / off state. The mixed gases are fully mixed in the mixing tank to form a reactant mixture.

[0013] Step 5: The raw material gas output from the mixing tank is transported to the inlet of the eight-channel parallel reactor. The transformer provides the appropriate working voltage for the plasma power supply, which in turn provides high-voltage driving power to the eight-channel parallel reactor, enabling the reactor to achieve uniform discharge. Through the synergistic effect of low-temperature plasma and catalysis, the raw material gas is converted into high-energy chemical products, realizing the storage of electrical energy into chemical energy. The tail gas after the reaction is transported to the chromatograph, which analyzes and detects the components of the tail gas. The analysis results are transmitted back to the control cabinet and central control screen through the main control and communication module.

[0014] Furthermore, in steps three and four, the control cabinet uses the hydrogen flow meter and the pressure of the hydrogen storage tank as control quantities, and automatically matches the hydrogen production rate by adjusting the current or voltage of the electrolyzer; at the same time, it uses the target feed ratio or the product composition fed back by chromatography as the target, and adjusts the flow meter to control the gas mixing ratio.

[0015] Furthermore, the eight-channel parallel reactor is a multi-channel parallel dielectric barrier discharge structure, which enables linear scaling up of the processing capacity through the multi-channel structure;

[0016] The control cabinet sends power or frequency setting commands to the plasma power supply through the main control and communication module, thereby enabling real-time adjustment of discharge parameters.

[0017] Furthermore, with hydrogen detectors and pressure sensors as high-priority safety inputs, if hydrogen leakage exceeds limits, pressure is abnormal, chromatographic monitoring detects abnormal product indicators, or electrical faults are detected, the control cabinet immediately executes the preset safety procedures, while simultaneously displaying fault information on the central control screen and recording logs.

[0018] Furthermore, the safety procedure is as follows: first, trigger the alarm, then simultaneously cut off the plasma power supply and the electrolytic cell power supply, close the relevant solenoid valves, and simultaneously activate the ventilation or pressure relief procedure.

[0019] A low-temperature plasma catalytic energy storage device, used in a low-temperature plasma catalytic energy storage technology, includes a reaction cabinet, a hydrogen production and gas distribution cabinet, and a control cabinet, and further includes:

[0020] The hydrogen production and gas distribution cabinet is a raw material preparation and distribution unit used to complete the electrolysis of water to produce hydrogen, hydrogen purification and storage, and the mixing of hydrogen and gas, and output the reactant mixture gas.

[0021] The reaction cabinet is the execution unit for plasma catalytic reaction, and it integrates an eight-channel parallel reactor, a plasma power supply and a chromatograph.

[0022] The eight-channel parallel reactor is used to carry out plasma catalytic reactions. The plasma power supply provides high-voltage driving power to the eight-channel parallel reactor, and the chromatography is used to analyze the tail gas components of the eight-channel parallel reactor.

[0023] The control cabinet is the control and auxiliary unit of the whole machine. It contains a main control and communication module, a power distribution and protection module, an electrolytic cell power supply and a transformer.

[0024] The main control and communication module, and the power distribution and protection module constitute the whole machine control system, realizing signal interaction, power supply management and logic control;

[0025] The transformer provides the appropriate operating voltage for the plasma power supply;

[0026] The electrolytic cell power supply provides the electrolytic cell with electrical energy for electrolysis.

[0027] Furthermore, the hydrogen production and gas distribution cabinet is equipped with, in sequence, a pure water purifier, a pure water tank, a liquid flow pump, an electrolyzer, a gas-liquid separator, a drying tube, a hydrogen flow meter, a hydrogen storage tank, and a pressure reducing valve. It also includes a gas distribution cylinder, a flow meter, a pressure sensor, a solenoid valve, a gas mixing tank, and a hydrogen detector.

[0028] Furthermore, the central control screen is equipped with a control cabinet front end, which is used to realize the operation of the whole machine, parameter setting and status monitoring;

[0029] The alarm is installed at the top front of the control cabinet to emit an audible and visual alarm.

[0030] The control cabinet also houses the main power distribution and metering module, contactor and power control module, and gas generator, which supplies carrier gas for the chromatograph.

[0031] Furthermore, the main control and communication module has closed-loop control functions for hydrogen production, gas distribution ratio, discharge power, and safety. It also supports switching between grid-connected and off-grid modes, has communication capabilities, and can be connected to external energy management systems.

[0032] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention modularly integrates the water electrolysis hydrogen production system with a multi-channel parallel dielectric barrier discharge plasma catalytic reactor, uses renewable electricity as input, and introduces hydrogen into the reaction system with nitrogen or carbon dioxide after hydrogen production. Through the synergistic effect of low temperature plasma and catalysis, it is converted into high-energy chemical products such as ammonia, methanol, and methane, thereby realizing electrochemical storage.

[0033] The reactor on board achieves linear scaling up of processing capacity through a multi-channel structure;

[0034] The entire device adopts a skid-mounted integrated design, has powerful communication and real-time feedback control functions, supports grid-connected and off-grid switching, and has excellent safety and stability. Attached Figure Description

[0035] In the attached diagram:

[0036] Figure 1 This is a three-dimensional structural schematic diagram of a low-temperature plasma catalytic energy storage device proposed in this invention;

[0037] Figure 2 This is a front view schematic diagram of a low-temperature plasma catalytic energy storage device proposed in this invention;

[0038] Figure 3 This is a rear view schematic diagram of a low-temperature plasma catalytic energy storage device proposed in this invention.

[0039] In the figure: 1. Housing; 101. Air outlet; 2. Control panel; 201. First adjustment mechanism; 202. First rotating part; 203. First rotating part; 3. Air supply system; 301. Second adjustment mechanism; 302. Air supply part; 303. Second rotating part; 304. Second rotating part. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] Example: Refer to Figure 1-3 A low-temperature plasma catalytic energy storage device is constructed by integrating and connecting the reaction cabinet 1, the hydrogen production and gas distribution cabinet 2, and the control cabinet 3 from left to right. The gas circuits between the cabinets are completed by seamless 316L stainless steel pipelines, and the electrical and signal circuits are completed by shielded flame-retardant cables. The entire cabinet adopts an explosion-proof and sealed design to meet the safety requirements of chemical production and energy station sites.

[0042] The hydrogen production and gas distribution cabinet 2 is the raw material preparation and precise distribution unit of the whole machine. The cabinet is divided into two functional areas according to the process flow: the hydrogen production area and the gas distribution and mixing area. The components are arranged in sequence according to the fluid direction.

[0043] The hydrogen production area is sequentially equipped with a pure water unit 30, a pure water tank 8, a liquid flow pump 7, an electrolyzer 9, a gas-liquid separator 10, a drying pipe 11, a hydrogen flow meter 12, a hydrogen storage tank 13, and a pressure reducing valve 14. The outlet of the pure water unit 30 is connected to the inlet of the pure water tank 8 via a pipeline, supplying ultrapure water for electrolysis to the pure water tank 8. The outlet of the pure water tank 8 is connected to the input pipeline of the liquid flow pump 7, and the output of the liquid flow pump 7 is connected to the inlet pipeline of the electrolyzer 9. The hydrogen outlet of the electrolyzer 9 is connected to the input pipeline of the gas-liquid separator 10, and the condensate outlet of the gas-liquid separator 10 returns to the pure water tank 8, achieving pure water recycling. The hydrogen outlet of the gas-liquid separator 10 is connected to the input pipeline of the drying pipe 11. The drying tube 11 adopts a molecular sieve adsorption drying structure, which can complete the deep dehydration treatment of hydrogen. The output end of the drying tube 11 is connected to the input end of the hydrogen flow meter 12. The hydrogen flow meter 12 adopts a high-precision mass flow controller, which can monitor and feed back hydrogen flow data in real time. The output end of the hydrogen flow meter 12 is connected to the input end of the hydrogen storage tank 13. The hydrogen storage tank 13 adopts a 10L high-pressure hydrogen storage tank with a built-in safety valve and a local pressure gauge. The output end of the hydrogen storage tank 13 is connected to the input end of the pressure reducing valve 14. The pressure reducing valve 14 adopts a high-precision pressure stabilizing valve, and the output pressure can be stably adjusted within the range of 0.2-0.4MPa to ensure the stability of hydrogen output pressure and flow.

[0044] The gas mixing area is equipped with a gas mixing cylinder 29, a flow meter 17, a pressure sensor 15, a solenoid valve 16, a mixing tank 18, and a hydrogen detector 19. A flow meter 17 is connected to the hydrogen output end of the pressure reducing valve 14 and the gas mixing output end of the gas mixing cylinder 29. In this embodiment, both flow meters 17 use mass flow controllers of the same specifications as the hydrogen path, enabling precise proportional adjustment of the two gas paths. A pressure sensor 15 and a normally closed solenoid valve 16 are sequentially installed on the output pipes of both flow meters 17. The ends of both pipes are connected to the input end of the mixing tank 18. The mixing tank 18 has a built-in baffle structure to ensure thorough and uniform mixing of hydrogen and the mixed gas. The hydrogen detector 19 is installed at the top of the inner cavity of the hydrogen production and gas mixing cabinet 2, with a detection range of 0-100% LEL and an alarm threshold set to 1% LEL, used for real-time monitoring of hydrogen leakage within the cabinet.

[0045] The reaction cabinet 1 is the execution unit for the whole-machine plasma catalytic reaction. The front of the cabinet is vertically installed with eight-channel parallel reactors 6, and the back is layered with plasma power supply 32 and chromatograph 31.

[0046] The eight-channel parallel reactor 6 adopts a coaxial dielectric barrier discharge (DBD) structure, with eight identical reaction channels connected in parallel. The processing scale can be linearly scaled up by increasing or decreasing the number of reaction channels. The output end of the mixing tank 18 is connected to the inlet pipe of the eight-channel parallel reactor 6 through a gas main. Each channel inlet of the reactor is equipped with an equal-diameter throttling orifice to ensure uniform gas intake in each channel. The power output end is electrically connected to the high-voltage electrode of the eight-channel parallel reactor 6 to provide stable high-voltage driving power to the reactor. The chromatograph 31 is equipped with a thermal conductivity detector (TCD), which can complete a full analysis of the tail gas components every 2-5 minutes. The tail gas outlet of the reactor is connected to the inlet pipe of the chromatograph 31 for real-time analysis of the component ratio of the target product and unreacted raw materials in the tail gas.

[0047] Control cabinet 3 is the control center and auxiliary support unit of the whole machine. Various control and power distribution components are installed in layers inside the cabinet. The central control screen 4 is embedded in the front of the cabinet, and the alarm 5 is installed at the top front.

[0048] Among them, the central control screen 4 is a touch screen, which is connected to the main control and communication module 20 to realize the operation control of the whole machine, the setting of operating parameters and the real-time monitoring of equipment status; the alarm 5 adopts an explosion-proof sound and light alarm with an alarm volume ≥110dB, which is used for sound and light alarm prompts in abnormal equipment conditions.

[0049] The control cabinet 3 integrates the main control and communication module 20, the power distribution and protection module 21, the signal conversion and relay module 22, the terminal block 23, the main power distribution and metering module 24, the contactor and power control module 25, the transformer 26, the electrolytic cell power supply 27, and the gas generator 28.

[0050] Among them, the electrolytic cell power supply 27 adopts a high-precision DC regulated power supply, which is electrically connected to the electrolytic cell 9 to provide adjustable electrolytic working power for the electrolytic cell 9; the transformer 26 adopts an isolation step-up transformer, with its input end connected to the main power distribution circuit and its output end connected to the plasma power supply 32 to provide the plasma power supply 32 with a suitable working voltage; the gas generator 28 adopts a high-purity nitrogen generator, which is connected to the carrier gas port of the chromatograph 31 to supply the chromatograph 31 with the carrier gas for detection; the power distribution and protection module 21, the contactor and power control module 25, and the signal transfer and relay module 22 work together to realize the power supply on / off control, operation signal acquisition and electrical logic protection of each power component of the whole machine.

[0051] The device in this embodiment can be used according to the following steps, that is, catalytic energy storage can be completed by using the following technology:

[0052] Step 1: Connect the equipment power supply to the public power grid. After closing the switch, start the control cabinet 3 and the central control panel 4. The system will automatically perform a full self-check, which includes the online status of sensors, the position of valve switches, the on / off status of safety circuits, and the status of the emergency stop button. After confirming that there are no faults, release the emergency stop button and send a start command through the central control panel 4. The electrolytic cell power supply 27 will start, and the electrolytic cell 9 and the liquid flow pump 7 will be put into operation simultaneously.

[0053] Step 2: The pure water purifier 30 continuously produces ultrapure water and replenishes it to the pure water tank 8. The liquid flow pump 7 stably delivers the pure water in the pure water tank 8 to the electrolytic cell 9 according to the set flow rate. The electrolytic cell power supply 27 applies the electrolysis working voltage to the electrolytic cell 9. The pure water is electrolyzed in the electrolytic cell 9 to generate hydrogen and oxygen. The oxygen is discharged through a safety pipeline, and the hydrogen containing water vapor is transported through a pipeline to the gas-liquid separator 10 to remove most of the liquid water entrained in the hydrogen, completing the preliminary dehydration treatment of the hydrogen.

[0054] Step 3: The hydrogen gas, after preliminary dehydration, is output from the gas-liquid separator 10 and enters the drying tube 11 for deep adsorption drying to remove trace amounts of moisture, obtaining qualified dry hydrogen gas. The dry hydrogen gas flows through the hydrogen flow meter 12, and after real-time monitoring of the hydrogen flow rate, it is delivered to the hydrogen storage tank 13 for storage. The hydrogen gas output from the hydrogen storage tank 13 is depressurized and stabilized by the pressure reducing valve 14, ensuring the stability of the hydrogen output flow rate. During operation, the control cabinet 3 uses the real-time flow data from the hydrogen flow meter 12 and the pressure data from the hydrogen storage tank 13 as control variables to adjust the operating current of the electrolyzer 9 in real time, achieving automatic matching of the hydrogen production rate. When the pressure in the hydrogen storage tank 13 exceeds 1.2 MPa, the system automatically reduces the electrolysis power; when the pressure exceeds 1.5 MPa, the electrolyzer 9 automatically stops operating.

[0055] Step 4: The hydrogen gas output from the pressure reducing valve 14 and the gas from the gas mixing cylinder 29 are respectively adjusted by the corresponding flow meter 17 according to the set ratio. On the output pipelines of the two gases, the pressure sensor 15 monitors the pipeline pressure in real time. When the pressure exceeds the set upper limit or falls below the lower limit, the solenoid valve 16 automatically closes and cuts off the gas path. The two gases with the adjusted flow rates enter the mixing tank 18 and are fully mixed to form a uniform reactant mixture.

[0056] During operation, the system can automatically adjust the ratio of the two gases based on the product composition data fed back by chromatograph 31 to optimize the reaction effect.

[0057] Step 5: The raw material mixture output from the mixing tank 18 is evenly distributed to each reaction channel of the eight-channel parallel reactor 6 via the gas main pipe. The transformer 26 provides a suitable input voltage for the plasma power supply 32, which applies high-frequency high-voltage electricity to the eight-channel parallel reactor 6, causing uniform dielectric barrier discharge in the reactor and generating non-thermal equilibrium low-temperature plasma. Under normal temperature and pressure conditions, through the synergistic effect of the plasma and the catalyst packed in the reactor, the catalytic conversion reaction of the raw material gas is completed, generating the corresponding high-energy chemical products and realizing the storage of electrical energy into stable chemical energy. The tail gas after the reaction is output from the reactor and enters the chromatograph 31 for component analysis. The analysis results are transmitted back to the control cabinet 3 and the central control screen 4 through the main control and communication module 20. The control system adjusts the gas distribution ratio, the discharge power of the plasma power supply 32 or the hydrogen production rate of the electrolyzer 9 in real time according to the product selectivity and conversion rate data, continuously optimizing the reaction yield and energy utilization efficiency.

[0058] Furthermore, the equipment is equipped with a full-link safety interlock closed loop, and a graded handling mechanism is established for various abnormal operating conditions, as detailed below:

[0059] When the hydrogen detector 19 detects that the hydrogen concentration in the cabinet exceeds the alarm threshold of 1% LEL, the system immediately performs the following actions according to the preset priority: triggering the audible and visual alarm of the alarm 5, cutting off the plasma power supply 32 and the electrolysis cell power supply 27, closing the solenoid valve 16 of the hydrogen circuit and the gas distribution circuit, starting the explosion-proof exhaust fan in the cabinet, and displaying fault information on the central control screen 4 and recording the operation log. The equipment can only be reset and restarted after the fault is confirmed to be eliminated on-site by a human.

[0060] When pressure sensor 15 detects that the pipeline pressure exceeds 0.5MPa or is lower than 0.1MPa, the system automatically adjusts the valve opening of the corresponding pipeline. If the pressure remains abnormal, the system immediately closes the solenoid valve 16 of the corresponding pipeline. If necessary, the system stops the operation of the reactor and electrolytic cell and triggers an alarm.

[0061] When the chromatograph 31 detects that the selectivity of the target product is lower than the set lower limit or the content of harmful by-products exceeds the upper limit, the system automatically adjusts the gas mixing ratio and discharge power. If the parameters still do not meet the standards after adjustment, the feed gas is suspended, the equipment enters standby mode, and an alarm is triggered to prompt the operator to investigate.

[0062] When the system detects electrical faults such as overcurrent, short circuit, or leakage, the circuit breaker of the corresponding circuit immediately trips, cutting off the power supply to the faulty circuit. The central control screen displays the fault code and reports the fault information through the remote communication module, ensuring the safety of equipment and personnel.

[0063] The equipment in this embodiment supports dual-mode switching between grid-connected and off-grid operation, adapting to different application scenarios. In grid-connected mode, the equipment connects to the public power grid, prioritizing the utilization of surplus wind power. The gas cylinder 29 uses a high-purity nitrogen cylinder, and the eight-channel parallel reactor 6 is filled with a supported nickel-based catalyst, with ammonia as the target product. After startup, the system operates in grid-connected mode. When it receives a "surplus wind power" signal from the grid dispatch center, it automatically increases the hydrogen production and reaction load, reaching full load operation. During peak grid electricity demand or when renewable energy is insufficient, it can reduce the operating load or enter standby mode. It can directly connect to the park's energy management system, receive grid peak-shaving dispatch instructions, and participate in grid ancillary services. During operation, the system sets the nitrogen to hydrogen feed molar ratio to 1:3, the electrolyzer 9 has a rated operating current of 200A, a hydrogen production capacity of 5 Nm³ or h, and the plasma power supply 32 has a rated discharge power of 8 kW and an operating frequency of 15 kHz. According to online chromatographic analysis, under normal temperature and pressure conditions, the ammonia synthesis conversion rate is ≥12%, the ammonia selectivity is ≥85%, and the energy efficiency is ≥25%. This enables efficient utilization and chemical energy storage of surplus wind power. The synthesized ammonia can be directly stored and transported as an energy storage product, or it can be consumed locally.

[0064] In off-grid operation mode, the equipment is directly connected to the distributed photovoltaic power station without access to the public power grid. The gas cylinder 29 uses food-grade carbon dioxide, and the eight-channel parallel reactor 6 is filled with a copper-based catalyst. The target product is methanol. After startup, the system operates in off-grid mode. The control cabinet 3 adaptively adjusts the hydrogen production rate of the electrolyzer 9 and the operating load of the reactor based on the real-time output power of the photovoltaic power station and the pressure status of the hydrogen storage tank 13. When the photovoltaic output power is insufficient, the operating load is automatically reduced to prioritize power supply to the core control system; when the photovoltaic power is sufficient, the system operates at full load. Under load operation, priority is given to completing the chemical energy storage task. During operation, the system sets the feed molar ratio of carbon dioxide to hydrogen to 1:3, and adjusts the total feed amount in real time according to the photovoltaic output. The discharge power of the plasma power supply 32 is adaptively adjusted with the photovoltaic output, with an adjustment range of 2-10kW. According to online detection by chromatograph 31, under normal temperature and pressure conditions, the methanol synthesis selectivity is ≥80%, which can realize the local consumption and chemical energy storage of off-grid photovoltaic power, effectively solving the problem of curtailment of photovoltaic power stations in remote areas. The synthesized methanol can be directly used as a clean fuel or chemical raw material.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A low-temperature plasma catalytic energy storage technology, characterized in that, The main operating steps are as follows: Step 1: Connect the equipment power supply to the public power grid or renewable power supply, start the control cabinet (3) and the central control panel (4), check the system self-test items, and start the electrolytic cell (9) and liquid flow pump (7) by the electrolytic cell power supply (27). Step 2: Pure water for electrolysis is supplied to the pure water tank (8) through the pure water purifier (30). The liquid flow pump (7) transports the pure water in the pure water tank (8) to the electrolytic cell (9). The electrolytic cell power supply (27) provides the electrolytic cell (9) with the working power for electrolysis, so that the electrolytic cell (9) electrolyzes the input pure water into hydrogen and oxygen. The hydrogen gas with water vapor generated by electrolysis is transported to the gas-liquid separator (10) to complete the preliminary dehydration treatment of hydrogen. Step 3: The hydrogen gas that has been initially dehydrated by the gas-liquid separator (10) is sent to the drying tube (11) for deep drying to obtain dry hydrogen gas. The dry hydrogen gas flows through the hydrogen flow meter (12) and is then sent to the hydrogen storage tank (13) for storage. The output pressure of the hydrogen gas output from the hydrogen storage tank (13) is regulated by the pressure reducing valve (14) to ensure the stability of the hydrogen output flow rate. Step 4: The hydrogen gas output from the hydrogen storage tank (13) after depressurization is mixed with the gas from the gas mixing cylinder (29) and adjusted proportionally by the flow meter (17). The pressure sensor (15) installed on the output of the flow meter (17) monitors the gas pressure, and the solenoid valve (16) controls the opening and closing. The mixed gas is fully mixed in the mixing tank (18) to form a reactant mixture. Step 5: The raw material gas output from the mixing tank (18) is transported to the inlet of the eight-channel parallel reactor (6). The transformer (26) provides the appropriate working voltage for the plasma power supply (32), and the plasma power supply (32) provides high-voltage driving power to the eight-channel parallel reactor (6), so that the eight-channel parallel reactor (6) can achieve uniform discharge. The conversion reaction of the raw material gas is completed through the synergistic effect of low-temperature plasma and catalysis, generating high-energy chemical products and realizing the storage of electrical energy into chemical energy. The tail gas after the reaction is transported to the chromatograph (31). The chromatograph (31) completes the analysis and detection of the tail gas components. The analysis results are transmitted back to the control cabinet (3) and the central control screen (4) through the main control and communication module (20).

2. The low-temperature plasma catalytic energy storage technology and equipment according to claim 1, characterized in that, In steps three and four, the control cabinet (3) uses the pressure of the hydrogen flow meter (12) and the hydrogen storage tank (13) as the control quantity, and automatically matches the hydrogen production rate by adjusting the current or voltage of the electrolyzer (9); at the same time, it uses the target feed ratio or the product composition fed back by the chromatograph (31) as the target, and adjusts the flow meter (17) to achieve the mixed gas ratio control.

3. A low-temperature plasma catalytic energy storage technology according to claim 2, characterized in that, The eight-channel parallel reactor (6) is a multi-channel parallel dielectric barrier discharge structure, which achieves linear scaling of the processing scale through the multi-channel structure; The control cabinet (3) sends power or frequency setting commands to the plasma power supply (32) through the main control and communication module (20) to realize real-time adjustment of discharge parameters.

4. A low-temperature plasma catalytic energy storage technology according to claim 3, characterized in that, With the hydrogen detector (19) and pressure sensor (15) as high-priority safety inputs, if hydrogen leakage exceeds the limit, pressure is abnormal, the chromatograph (31) detects abnormal product indicators or electrical faults, the control cabinet (3) immediately executes the preset safety program, and at the same time displays the fault information and records the log on the central control screen (4).

5. A low-temperature plasma catalytic energy storage technology according to claim 4, characterized in that, The safety procedure is as follows: first, trigger the alarm (5), then simultaneously cut off the plasma power supply (32) and the electrolytic cell power supply (27), close the relevant solenoid valve (16), and simultaneously activate the ventilation or pressure relief procedure.

6. A low-temperature plasma catalytic energy storage device, used in the low-temperature plasma catalytic energy storage technology of claim 5, comprising a reaction cabinet (1), a hydrogen production and gas distribution cabinet (2), and a control cabinet (3), characterized in that, Also includes: The hydrogen production and gas distribution cabinet (2) is a raw material preparation and distribution unit, used to complete the electrolysis of water to produce hydrogen, hydrogen purification and storage, and the mixing of hydrogen and gas, and output the reaction mixture gas; The reaction cabinet (1) is the execution unit for plasma catalytic reaction, and integrates an eight-channel parallel reactor (6), a plasma power supply (32) and a chromatograph (31). The eight-channel parallel reactor (6) is used to carry out plasma catalytic reaction, the plasma power supply (32) provides high-voltage driving power to the eight-channel parallel reactor (6), and the chromatograph (31) is used to analyze the tail gas components of the eight-channel parallel reactor (6). The control cabinet (3) is the whole machine control and auxiliary unit, which is equipped with a main control and communication module (20), a power distribution and protection module (21), an electrolytic cell power supply (27) and a transformer (26). The main control and communication module (20) and the power distribution and protection module (21) constitute the whole machine control system, realizing signal interaction, power supply management and logic control; The transformer (26) provides an appropriate operating voltage for the plasma power supply (32); The electrolytic cell power supply (27) provides electrolytic energy to the electrolytic cell (9).

7. A low-temperature plasma catalytic energy storage technology and device according to claim 6, characterized in that, The hydrogen production and gas distribution cabinet (2) is equipped with a pure water device (30), a pure water tank (8), a liquid flow pump (7), an electrolytic cell (9), a gas-liquid separator (10), a drying tube (11), a hydrogen flow meter (12), a hydrogen storage tank (13), and a pressure reducing valve (14) in sequence. It also includes a gas distribution cylinder (29), a flow meter (17), a pressure sensor (15), a solenoid valve (16), a gas mixing tank (18), and a hydrogen detector (19). The pure water purifier (30) is connected to the pure water tank (8). The outlet of the pure water tank (8) is connected to the input end of the liquid flow pump (7). The output end of the liquid flow pump (7) is connected to the inlet end of the electrolytic cell (9). The hydrogen outlet of the electrolytic cell (9) is connected to the input end of the gas-liquid separator (10). The output end of the gas-liquid separator (10) is connected to the input end of the drying tube (11). The output end of the drying tube (11) is connected to the input end of the hydrogen storage tank (13) via the hydrogen flow meter (12). The output end of the hydrogen storage tank (13) is connected to the input end of the pressure reducing valve (14). The output end of the pressure reducing valve (14) and the output end of the gas mixing cylinder (29) are respectively connected to the flow meter (17). Both outputs of the flow meter (17) are equipped with pressure sensors (15) and solenoid valves (16), and both outputs are connected to the input end of the mixing tank (18).

8. A low-temperature plasma catalytic energy storage technology and device according to claim 6, characterized in that, The eight-channel parallel reactor (6) is a multi-channel parallel dielectric barrier discharge plasma catalytic reactor, which achieves linear scaling of the processing scale through a multi-channel structure.

9. A low-temperature plasma catalytic energy storage technology and device according to claim 6, characterized in that, The central control screen (4) is equipped with the front end of the control cabinet (3) for realizing the operation of the whole machine, parameter setting and status monitoring; The alarm (5) is installed at the top front of the control cabinet (3) and is used to emit an audible and visual alarm. The control cabinet (3) is also equipped with a main power distribution and metering module (24), a contactor and power control module (25) and a gas generator (28), which supplies carrier gas to the chromatograph (31).

10. A low-temperature plasma catalytic energy storage technology and device according to claim 6, characterized in that, The main control and communication module (20) has functions of closed-loop control of hydrogen production, closed-loop control of gas distribution ratio, control of discharge power and closed-loop control of safety. It also supports switching between grid-connected and off-grid modes, has communication function and can be connected to external energy management systems.

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