Green electricity heating driven system for preparing synthesis gas through biomass gasification and operation method of green electricity heating driven system

Abstract

The invention relates to a green electricity heating driven biomass gasification synthesis gas preparation system and an operation method thereof, which are used for efficiently preparing synthesis gas. The system mainly comprises a renewable energy power generation unit, an energy storage battery unit, a power control unit, a water and biomass supply unit, a biomass supercritical H2O-CO2 co-gasification reaction unit, a product separation unit and a CO2 circulation unit. Wherein the renewable energy power generation unit is connected with the energy storage battery unit to form a power generation and storage unit to provide stable power for the system. The water and biomass supply unit is connected with the co-gasification reaction unit, and the product separation unit is connected with the CO2 circulation unit, so that cyclic utilization of CO2 is realized. Compared with the prior art, the method provided by the invention not only realizes green electricity consumption, but also realizes biomass resource utilization, combines hydrogen source and carbon source production equipment into one, provides a new synthesis gas preparation route for synthesis of green fuel, and has a very high application prospect.

Description

Technical Field

[0001] The present invention relates to the field of resource chemical technology, and in particular to a system for preparing synthesis gas by biomass gasification driven by green electricity heating and an operation method thereof. Background Art

[0003] Traditionally, the production of synthetic fuels relies on non-renewable resources such as coal and natural gas. This process not only consumes a large amount of fossil energy, but also produces a large amount of carbon dioxide emissions, exacerbating the problem of global climate change. Faced with this challenge, my country's abundant wind and solar energy resources provide great potential for the development of renewable energy. However, due to the intermittent and unstable nature of wind and solar energy, the grid-connected power generation of these energy sources poses a challenge to the stability of the power grid, resulting in a large amount of wind and solar power abandonment.

[0004] In order to effectively utilize these renewable energy sources and reduce dependence on fossil energy, it is particularly important to develop new energy conversion technologies. At present, the method of using green electricity (green electricity) to produce hydrogen through water electrolysis and combining biomass gasification or carbon capture technology to produce synthesis gas has been widely studied. This method can convert green electricity into chemical energy, which can then be used for the production of synthetic fuels. However, existing technical routes often involve complex process flows, including multiple steps such as water electrolysis to produce hydrogen, biomass gasification, CO2 capture and reverse water gas reaction, which not only increases the complexity and cost of the system, but also limits its large-scale application.

[0005] Supercritical water gasification technology is an emerging biomass conversion technology that uses the special physical and chemical properties of water in a supercritical state to efficiently convert biomass into hydrogen and CO2. This process can not only achieve the in-situ utilization of CO2, but also adjust the ratio of H2 and CO in the synthesis gas through the circulation of CO2, thereby providing an ideal raw gas for the production of synthetic fuels. Although supercritical water gasification technology has significant advantages in biomass conversion efficiency and product gas quality, it still faces the challenges of high energy consumption and unstable heat supply in practical applications. It is urgent to develop new heating solutions to meet its intensive demand for heat energy. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a green electricity heating driven biomass gasification system for preparing synthesis gas and its operation method, which can produce synthesis gas with a target carbon-hydrogen ratio, aiming to improve energy utilization efficiency, reduce dependence on fossil energy, and reduce carbon emissions, thereby providing an environmentally friendly and efficient solution for synthetic fuel production.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] The first aspect of the present invention provides a biomass gasification system for preparing synthesis gas driven by green electricity heating, including a renewable energy power generation unit, an energy storage battery unit, a power control unit, a water and biomass supply unit, a biomass supercritical H2O-CO2 co-gasification reaction unit, a product separation unit, and a CO2 circulation unit;

[0009] The renewable energy power generation unit is connected to the energy storage battery unit to form a power generation and storage unit, thereby providing power for the energy-consuming equipment of the system;

[0010] The outlet of the water and biomass supply unit is connected to the inlet of the biomass supercritical H2O-CO2 co-gasification reaction unit, the outlet of the biomass supercritical H2O-CO2 co-gasification reaction unit is connected to the inlet of the product separation unit, the CO2 outlet of the product separation unit is connected to the inlet of the CO2 circulation unit, the outlet of the CO2 circulation unit is connected to the inlet of the biomass supercritical H2O-CO2 co-gasification reaction unit, the return water outlet of the product separation unit is connected to the water and biomass supply unit, and the synthesis gas outlet of the product separation unit produces synthesis gas with a target carbon-hydrogen ratio.

[0011] Further, the water and biomass supply unit includes a water storage tank, a water pump, a biomass slurry storage tank, and a biomass slurry delivery pump;

[0012] The outlet of the water storage tank is connected to the inlet of the water pump, and the outlet of the biomass slurry storage tank is connected to the inlet of the biomass slurry delivery pump;

[0013] The outlet of the biomass slurry storage tank is connected to the inlet of the biomass slurry delivery pump 5 .

[0014] Furthermore, the biomass supercritical H2O-CO2 co-gasification reaction unit includes a heat exchanger, a supercritical water preheater, and a supercritical H2O-CO2 co-gasification reactor which are connected in sequence.

[0015] Further, the cold end outlet of the heat exchanger is connected to the inlet of the supercritical water preheater, the outlet of the supercritical water preheater is connected to the water inlet of the supercritical H2O-CO2 co-gasification reactor, and the outlet of the supercritical H2O-CO2 co-gasification reactor is connected to the hot end inlet of the heat exchanger;

[0016] The cold end inlet of the heat exchanger is also connected to the outlet of the water pump, and the biomass inlet of the supercritical H2O-CO2 co-gasification reactor is also connected to the outlet of the biomass slurry delivery pump.

[0017] Further, the product separation unit comprises a pressure reducing valve, a gas-liquid separator, and a pressure swing adsorption separation system which are connected in sequence;

[0018] The low pressure outlet of the pressure reducing valve is connected to the inlet of the gas-liquid separator, the gas outlet of the gas-liquid separator is connected to the inlet of the pressure swing adsorption separation system, and the pressure swing adsorption separation system separates the H2 / CO synthesis gas;

[0019] The high-pressure inlet of the pressure reducing valve is connected to the hot end outlet of the heat exchanger, and the return water outlet of the gas-liquid separator is connected to the return water inlet of the water storage tank.

[0020] Further, the CO2 circulation unit includes a CO2 compressor and a CO2 electric heater connected to each other;

[0021] The outlet of the CO2 compressor is connected to the inlet of the CO2 electric heater, the outlet of the CO2 electric heater is connected to the CO2 inlet of the supercritical H2O-CO2 co-gasification reactor, and the inlet of the CO2 compressor is connected to the CO2 outlet of the pressure swing adsorption separation system.

[0022] Further, the renewable energy power generation unit includes one or more of wind energy, solar energy, geothermal energy, hydro energy, and ocean energy power stations;

[0023] The energy storage battery unit includes one or more of a lithium-ion battery, a sodium-ion battery, a solid-state battery, and a liquid flow battery.

[0024] The power control unit is respectively connected to the above-mentioned renewable energy power generation unit, energy storage battery unit, water pump, biomass slurry delivery pump, supercritical water preheater, supercritical H2O-CO2 co-gasification reactor, pressure reducing valve, pressure swing adsorption separation system, CO2 compressor, CO2 electric heater and other energy-consuming equipment.

[0025] Furthermore, the power control unit can implement the following process:

[0026] Monitoring and regulating power flows: monitoring the power generation of renewable energy generation units and the electrical load of energy-consuming equipment, as well as the energy reserves of energy storage battery units;

[0027] Charging control: When there is excess power, control the transmission of power to the energy storage unit for charging;

[0028] Discharge control: When additional power output is needed, the energy storage battery unit is controlled to discharge to supplement power;

[0029] Power distribution: Allocate power to energy-consuming devices based on power supply and demand;

[0030] System protection: When the power supply is insufficient, it can shut down safely to protect the system.

[0031] Furthermore, the biomass is one or more of agricultural and forestry waste, domestic garbage, and industrial organic waste.

[0032] A second aspect of the present invention provides a method for operating the system for preparing synthesis gas by gasification of the above-mentioned substances, comprising:

[0033] When the power generated by renewable energy is greater than the electrical load required by the energy-consuming device, the excess power of the renewable energy generation unit is used to charge the energy storage unit, and the remaining power is output by the power control unit to the energy-consuming device;

[0034] When the power generated by renewable energy is equal to the electrical load required by the energy-consuming device, the power control unit determines the electrical energy storage of the energy storage battery unit. If it is in a high state, the energy storage battery unit discharges and outputs it to the energy-consuming device via the power control unit. If it is in a low state, the renewable energy generation unit 1 outputs it to the energy-consuming device via the power control unit.

[0035] When the power generated by renewable energy is less than the electrical load required by the energy-consuming equipment, the energy storage battery unit supplements the power and outputs it to the energy-consuming equipment through the power control unit. If both the renewable energy power generation unit and the energy storage battery unit cannot meet the power requirements of the energy-consuming equipment, the system shuts down.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1) This system innovatively integrates green electricity heating drive and biomass gasification technology to effectively utilize the electricity that is often wasted in renewable energy sources such as wind and solar energy, thereby achieving efficient consumption of these energies. This method not only improves the utilization efficiency of renewable energy, but also reduces dependence on traditional fossil energy, reduces energy consumption and environmental pollution, and contributes to the realization of sustainable development goals.

[0038] 2) This system integrates the production equipment of hydrogen and carbon monoxide into one, simplifying the preparation process of synthesis gas. This integrated design not only reduces equipment investment and operating costs, but also improves the energy conversion efficiency of the system. Through supercritical water gasification technology, biomass raw materials react with water under high temperature and high pressure conditions to produce synthesis gas rich in hydrogen and carbon monoxide. These gases can be directly used in the production of synthetic fuels such as methanol and diesel, thus providing a new green energy solution for the energy industry.

[0039] 3) In the process of producing syngas, this system realizes the in-situ thermochemical utilization and circulation of CO2, avoiding additional CO2 emissions. This closed-loop CO2 management strategy not only reduces greenhouse gas emissions, but also helps alleviate global climate change issues. In this way, the system provides an innovative solution for the efficient conversion and clean utilization of biomass energy, making a positive contribution to achieving carbon neutrality goals. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the process of preparing synthesis gas from biomass gasification driven by green electricity heating in the present invention

[0041] Figure 2 This is a schematic diagram of the specific structure of the system for preparing synthesis gas by biomass gasification driven by green electricity heating according to the present invention.

[0042] In the figure: 1. Renewable energy power generation unit; 2. Energy storage battery unit; 3. Power control unit; 4. Biomass slurry storage tank; 5. Biomass slurry delivery pump; 6. Water storage tank; 7. Water pump; 8. Heat exchanger; 9. Supercritical water preheater; 10. Supercritical H2O-CO2 co-gasification reactor; 11. Pressure reducing valve; 12. Gas-liquid separator; 13. Pressure swing adsorption separation system; 14. CO2 compressor; 15. CO2 electric heater. DETAILED DESCRIPTION

[0043] On the whole, the present invention provides a green electricity heating driven biomass gasification preparation synthesis gas system and power supply operation method, which includes a renewable energy power generation unit, an energy storage battery unit, a power control unit, a water and biomass supply unit, a biomass supercritical H2O-CO2 co-gasification reaction unit, a product separation unit, and a CO2 circulation unit; the renewable energy power generation unit and the energy storage battery unit constitute a power generation and storage unit, and the power control unit provides power to the system energy-consuming equipment; the outlet of the water and biomass supply unit is connected to the inlet of the biomass supercritical H2O-CO2 co-gasification reaction unit, the outlet of the biomass supercritical H2O-CO2 co-gasification reaction unit is connected to the inlet of the product separation unit, the CO2 outlet of the product separation unit is connected to the inlet of the CO2 circulation unit, the outlet of the CO2 circulation unit is connected to the inlet of the biomass supercritical H2O-CO2 co-gasification reaction unit, the return water outlet of the product separation unit is connected to the water and biomass supply unit, and the synthesis gas outlet of the product separation unit produces synthesis gas with a suitable carbon-hydrogen ratio. Compared with existing technologies, it not only realizes the consumption of green electricity, but also realizes the utilization of biomass resources, combines the hydrogen source and carbon source production equipment into one, and provides a new route for the preparation of synthesis gas for the synthesis of green fuels, which has extremely high application prospects.

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms and other features not clearly described in this technical solution are all considered to be common technical features disclosed in the prior art.

[0045] Example 1

[0046] like Figure 1As shown, the green electricity heating driven biomass gasification system for preparing synthesis gas in this embodiment includes a renewable energy power generation unit, an energy storage battery unit, a power control unit, a water and biomass supply unit, a biomass supercritical H2O-CO2 co-gasification reaction unit, a product separation unit, and a CO2 circulation unit.

[0047] Combination Figure 2 As shown, the water and biomass supply unit includes a water tank 6, a water pump 7, a biomass slurry storage tank 4, and a biomass slurry delivery pump 5; the biomass supercritical H2O-CO2 co-gasification reaction unit includes a heat exchanger 8, a supercritical water preheater 9, and a supercritical H2O-CO2 co-gasification reactor 10; the product separation unit includes a pressure reducing valve 11, a gas-liquid separator 12, and a pressure swing adsorption separation system 13; a CO2 compressor 14, and a CO2 electric heater 15; the outlet of the water tank 6 is connected to the inlet of the water pump 7, the outlet of the biomass slurry storage tank 4 is connected to the inlet of the biomass slurry delivery pump 5, the cold end outlet of the heat exchanger 8 is connected to the inlet of the supercritical water preheater 9, the outlet of the supercritical water preheater 9 is connected to the water inlet of the supercritical H2O-CO2 co-gasification reactor 10, and the outlet of the supercritical H2O-CO2 co-gasification reactor 10 is connected to the hot end inlet of the heat exchanger 8 connection; the cold end inlet of the heat exchanger 8 is also connected to the outlet of the water pump 7, the biomass inlet of the supercritical H2O-CO2 co-gasification reactor 10 is also connected to the outlet of the biomass slurry delivery pump 5, the low pressure outlet of the pressure reducing valve 11 is connected to the inlet of the gas-liquid separator 12, the gas outlet of the gas-liquid separator 12 is connected to the inlet of the pressure swing adsorption separation system 13, and the pressure swing adsorption separation system 13 separates the H2 / CO synthesis gas; the high pressure inlet of the pressure reducing valve 11 is connected to the hot end outlet of the heat exchanger 8, the return water outlet of the gas-liquid separator 12 is connected to the return water inlet of the water storage tank 6, the outlet of the CO2 compressor 14 is connected to the inlet of the CO2 electric heater 15, the outlet of the CO2 electric heater 15 is connected to the CO2 inlet of the supercritical H2O-CO2 co-gasification reactor 10, and the inlet of the CO2 compressor 14 is connected to the CO2 outlet of the pressure swing adsorption separation system 13.

[0048] The renewable energy power generation unit 1 is connected to the energy storage battery unit 2, and the power control unit 3 is respectively connected to the above-mentioned renewable energy power generation unit 1, energy storage battery unit 2, water pump 7, biomass slurry delivery pump 5, supercritical water preheater 9, supercritical H2O-CO2 co-gasification reactor 10, pressure reducing valve 11, pressure swing adsorption separation system 13, CO2 compressor 14, CO2 electric heater 15 and other energy-consuming equipment.

[0049] In this embodiment, the renewable energy power generation is wind power generation and photovoltaic power generation, the energy storage battery is a lithium battery, and the biomass is corn stalks.

[0050] In this embodiment, the core principle of the pressure swing adsorption separation system is to utilize the selective adsorption capacity of the adsorbent for different gas molecules to achieve the separation and purification of specific components in the gas mixture under periodically changing pressure conditions. Specifically, the system usually includes the following key parts: adsorber: This is the main part for achieving gas separation and contains an adsorbent bed. When the gas mixture passes through the adsorber, the specific gas molecules therein will be adsorbed by the adsorbent, thereby achieving preliminary separation. Regenerator: used to release the adsorbed gas molecules. This is usually achieved by changing the pressure inside the adsorber, for example, by heating or reducing pressure to release the adsorbed gas molecules in the adsorbent, so that the adsorbent is regenerated. Gas separation part: used to collect the released gas molecules in the adsorber, thereby achieving the final separation of the gas. By controlling the switching of the adsorber and the regenerator, the adsorbed gas molecules are collected into the corresponding collector.

[0051] The specific process is as follows: the water in the water storage tank 6 is pressurized to 23MPa-25MPa by a water pump 7, heated to 300°C by a heat exchanger 8, heated to 600°C by an electrically heated supercritical water preheater 9, and enters a supercritical H2O-CO2 co-gasification reactor 10, which is electrically heated to maintain a temperature of 600°C. The corn straw slurry in the biomass slurry storage tank 4 is pressurized to 23MPa-25MPa by the slurry delivery pump 5 and enters the supercritical H2O-CO2 co-gasification reactor 10, where a gasification reaction occurs. The product is cooled to below 50°C after heat exchange in the heat exchanger 8, and the back pressure is adjusted to 3MPa by the pressure reducing valve 11. The product is separated into water and gas products in the gas-liquid separator 12, wherein the water returns to the water storage tank 6 through the return water pipeline, and the gas product enters the pressure swing adsorption separation system 13 to separate H2 / CO, and the remaining CO2 enters the CO2 compressor 14, compressed to 23MPa-25MPa, and is heated to 600°C by the CO2 electric heater and sent to the supercritical H2O-CO2 co-gasification reactor 10 to adjust the synthesis gas ratio.

[0052] It can be seen that the core principle of the present invention is to use renewable energy to generate electricity to drive the supercritical water gasification process of biomass to prepare synthesis gas. Specifically, the system first captures clean energy such as wind energy and solar energy through a renewable energy power generation unit and converts it into electrical energy. This process effectively absorbs wind and solar power that might have been discarded, thereby improving the efficiency of energy utilization. Subsequently, the electrical energy is used to drive the biomass supercritical H2O-CO2 co-gasification reaction unit. In this process, the biomass raw material undergoes a gasification reaction under the conditions of supercritical water and CO2 to generate a synthesis gas rich in hydrogen and carbon monoxide. This synthesis gas is a key raw material for the production of synthetic fuels, and the entire gasification process is carried out under high temperature and high pressure, which can achieve efficient energy conversion and material conversion.

[0053] It can be seen that the present invention realizes the in-situ thermochemical utilization of CO2 through the CO2 circulation unit. The generated CO2 gas is compressed and heated, and then sent back to the gasification reaction unit to adjust the ratio of H2 and CO in the synthesis gas. This recycling not only improves the energy efficiency of the system, but also avoids additional CO2 emissions, achieving environmental protection goals.

[0054] The power control unit in the system of this embodiment is responsible for monitoring and regulating the flow of electricity to ensure the stable operation of the system under different power supply and demand conditions, including charging control, discharging control, and power distribution. Through this intelligent control strategy, the system can maximize the use of renewable energy while ensuring the stable production of syngas. The power control unit adopts products in the prior art, and the specific hardware composition is not repeated here.

[0055] The specific power supply method in this embodiment is as follows: when the power generated by renewable energy is greater than the power load required by the energy-consuming equipment, the excess power of the renewable energy power generation unit 1 is used to charge the energy storage unit 2, and the remaining power is output to the energy-consuming equipment by the power control unit 3; when the power generated by renewable energy is equal to the power load required by the energy-consuming equipment, the power control unit 3 determines the power reserve of the energy storage battery unit 2. If it is in a high state, the energy storage battery unit 2 is discharged and output to the energy-consuming equipment via the power control unit 3; if it is in a low state, the renewable energy power generation unit 1 is output to the energy-consuming equipment via the power control unit 3; when the power generated by renewable energy is less than the power load required by the energy-consuming equipment, the energy storage battery unit 2 supplements the power and outputs it to the energy-consuming equipment via the power control unit 3. If both the renewable energy power generation unit 1 and the energy storage battery unit 2 cannot meet the power requirements of the energy-consuming equipment, the system shuts down.

[0056] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A system for preparing synthesis gas from biomass gasification driven by green electricity heating, characterized in that: It includes renewable energy power generation unit, energy storage battery unit, power control unit, water and biomass supply unit, biomass supercritical H2O-CO2 co-gasification reaction unit, product separation unit, and CO2 circulation unit; The renewable energy power generation unit is connected to the energy storage battery unit to form a power generation and storage unit, thereby providing power for the energy-consuming equipment of the system; The outlet of the water and biomass supply unit is connected to the inlet of the biomass supercritical H2O-CO2 co-gasification reaction unit, the outlet of the biomass supercritical H2O-CO2 co-gasification reaction unit is connected to the inlet of the product separation unit, the CO2 outlet of the product separation unit is connected to the inlet of the CO2 circulation unit, the outlet of the CO2 circulation unit is connected to the inlet of the biomass supercritical H2O-CO2 co-gasification reaction unit, the return water outlet of the product separation unit is connected to the water and biomass supply unit, and the synthesis gas outlet of the product separation unit produces synthesis gas with a target carbon-hydrogen ratio.

2. The system for preparing synthesis gas by biomass gasification driven by green electricity heating according to claim 1 is characterized in that: The water and biomass supply unit comprises a water storage tank (6), a water pump (7), a biomass slurry storage tank (4), and a biomass slurry delivery pump (5); The outlet of the water storage tank (6) is connected to the inlet of the water pump (7), and the outlet of the biomass slurry storage tank (5) is connected to the inlet of the biomass slurry delivery pump (5); The outlet of the biomass slurry storage tank (4) is connected to the inlet of the biomass slurry delivery pump 5.

3. The system for preparing synthesis gas by biomass gasification driven by green electricity heating according to claim 1, characterized in that: The biomass supercritical H2O-CO2 co-gasification reaction unit comprises a heat exchanger (8), a supercritical water preheater (9), and a supercritical H2O-CO2 co-gasification reactor (10) which are connected in sequence.

4. The system for preparing synthesis gas from biomass gasified by green electricity heating drive according to claim 3 is characterized in that: The cold end outlet of the heat exchanger (8) is connected to the inlet of the supercritical water preheater (9), the outlet of the supercritical water preheater (9) is connected to the water inlet of the supercritical H2O-CO2 co-gasification reactor (10), and the outlet of the supercritical H2O-CO2 co-gasification reactor (10) is connected to the hot end inlet of the heat exchanger (8); The cold end inlet of the heat exchanger (8) is also connected to the outlet of the water pump (7), and the biomass inlet of the supercritical H2O-CO2 co-gasification reactor (10) is also connected to the outlet of the biomass slurry delivery pump (5).

5. The system for preparing synthesis gas from biomass gasified by green electricity heating drive according to claim 3 is characterized in that: The product separation unit comprises a pressure reducing valve (11), a gas-liquid separator (12), and a pressure swing adsorption separation system (13) which are connected in sequence; The low pressure outlet of the pressure reducing valve (11) is connected to the inlet of a gas-liquid separator (12), the gas outlet of the gas-liquid separator (12) is connected to the inlet of a pressure swing adsorption separation system (13), and the pressure swing adsorption separation system (13) separates H2 / CO synthesis gas; The high-pressure inlet of the pressure reducing valve (11) is connected to the hot end outlet of the heat exchanger (8), and the return water outlet of the gas-liquid separator (12) is connected to the return water inlet of the water storage tank (6).

6. The system for preparing synthesis gas from biomass gasified by green electricity heating drive according to claim 5, characterized in that: The CO2 circulation unit comprises a CO2 compressor (14) and a CO2 electric heater (15) which are connected to each other; The outlet of the CO2 compressor (14) is connected to the inlet of the CO2 electric heater (15), the outlet of the CO2 electric heater (15) is connected to the CO2 inlet of the supercritical H2O-CO2 co-gasification reactor (10), and the inlet of the CO2 compressor (14) is connected to the CO2 outlet of the pressure swing adsorption separation system (13).

7. The system for preparing synthesis gas from biomass gasified by green electricity heating drive according to claim 1, characterized in that: The renewable energy power generation unit includes one or more of wind energy, solar energy, geothermal energy, hydro energy, and ocean energy power stations; The energy storage battery unit includes one or more of a lithium-ion battery, a sodium-ion battery, a solid-state battery, and a liquid flow battery.

8. The system for preparing synthesis gas from biomass gasified by green electricity heating drive according to claim 1, characterized in that: The power control unit can implement the following process: Monitoring and regulating power flows: monitoring the power generation of renewable energy generation units and the electrical load of energy-consuming equipment, as well as the energy reserves of energy storage battery units; Charging control: When there is excess power, control the transmission of power to the energy storage unit for charging; Discharge control: When additional power output is needed, the energy storage battery unit is controlled to discharge to supplement power; Power distribution: Allocate power to energy-consuming devices based on power supply and demand; System protection: When the power supply is insufficient, it can shut down safely to protect the system.

9. The system for preparing synthesis gas from biomass gasified by green electricity heating drive according to claim 1, characterized in that: The biomass is one or more of agricultural and forestry waste, domestic garbage, and industrial organic waste.

10. An operating method of a system for preparing synthesis gas by gasification of substances as claimed in any one of claims 1 to 9, characterized in that: include: When the power generated by the renewable energy source is greater than the power load required by the energy-consuming device, the surplus power of the renewable energy source power generation unit (1) is used to charge the energy storage unit (2), and the surplus power is output by the power control unit (3) to the energy-consuming device; When the power generated by the renewable energy is equal to the electric load required by the energy-consuming device, the power control unit (3) determines the electric energy storage of the energy storage battery unit (2). If it is in a high state, the energy storage battery unit (2) discharges and outputs it to the energy-consuming device via the power control unit (3); if it is in a low state, the renewable energy generation unit 1 outputs it to the energy-consuming device via the power control unit (3); When the power generated by the renewable energy source is less than the electrical load required by the energy-consuming device, the energy storage battery unit (2) supplements the power and outputs it to the energy-consuming device via the power control unit (3); if both the renewable energy source power generation unit (1) and the energy storage battery unit (2) are unable to meet the power demand of the energy-consuming device, the system shuts down.

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