Method for converting synthesis gas into electric energy by using solid oxide fuel cell

Abstract

The invention discloses a method for converting synthesis gas into electric energy by using a solid oxide fuel cell. The method comprises the following steps: taking preheated air as a cathode of the solid oxide fuel cell; the synthesis gas after flow regulation and the carbon dioxide after third flow regulation are subjected to a reaction in a gas mixing chamber, and mixed gas is obtained; carrying out second preheating on the mixed gas, and taking the preheated mixed gas as an anode of the solid oxide fuel cell; the cathode and the anode are subjected to an electrochemical reaction in the solid oxide fuel cell, heat is generated based on tail gas generated by the anode and the cathode after the electrochemical reaction, and the heat is used for ensuring the first preheating and the second preheating. Compared with traditional thermal power generation, the method is more efficient, the problems of air pollution, noise and the like caused by the method are fewer, meanwhile, the defects that pollution is generated and the energy conversion efficiency is low in traditional thermal power generation are overcome, and the application potential of the coal underground synthesis gas in power generation is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery power generation, and in particular to a method and system for converting synthesis gas into electrical energy using a solid oxide fuel cell. Background Art

[0002] Underground Coal Gasification (UCG) is a clean and environmentally friendly way to exploit and utilize coal resources. This technology injects oxidants underground to burn and gasify coal underground to produce synthesis gas. Compared with gasifying coal through ground gasifiers, underground coal gasification technology combines coal mining with gasification, eliminating the need for mining. It has great potential for the development and utilization of unmineable coal seams that are deep, thin, and have high ash content and cannot be economically obtained by traditional technologies. The conventional way to utilize synthesis gas is thermal power generation, but it has disadvantages such as high pollution, high noise, and low efficiency.

[0003] Therefore, there is an urgent need for a clean, efficient and stable utilization process of synthesis gas produced based on underground coal gasification technology. Summary of the invention

[0004] The purpose of the present invention is to provide a method for converting synthesis gas into electrical energy using a solid oxide fuel cell to solve the above technical problems.

[0005] To achieve the above object, the present invention provides a method for converting synthesis gas into electrical energy using a solid oxide fuel cell, the method comprising:

[0006] performing a first filtering process, a first flow rate adjustment and a first preheating process on the air in sequence, and using the preheated air as a cathode of a solid oxide fuel cell;

[0007] performing a second filtering process and a second flow adjustment on the synthesis gas in sequence, and reacting the synthesis gas after the flow adjustment with the carbon dioxide after the third flow adjustment in a gas mixing chamber to obtain a mixed gas;

[0008] performing a second preheating on the mixed gas, and using the preheated mixed gas as an anode of a solid oxide fuel cell;

[0009] The cathode and the anode perform an electrochemical reaction inside the solid oxide fuel cell, and generate heat based on tail gas produced by the anode and the cathode after the electrochemical reaction, and the heat is used to ensure the first preheating and the second preheating.

[0010] Optionally, the temperatures of the first preheating and the second preheating are both 240-220°C.

[0011] Optionally, the ratio of the air flow rate based on the first flow rate regulation to the synthesis gas flow rate based on the second flow rate regulation is 3:1.

[0012] Optionally, the synthesis gas is subjected to a second filtering process, comprising:

[0013] Removing solid particles from the synthesis gas through a gas filter to obtain the synthesis gas after the solid particles are removed;

[0014] The hydrogen sulfide gas in the synthesis gas after the solid particles are removed is removed by a desulfurization device to obtain filtered synthesis gas.

[0015] Optionally, the carbon dioxide flow rate adjusted based on the third flow rate is determined by the total flow rate of methane and carbon monoxide in the synthesis gas.

[0016] Optionally, the heat generated based on the tail gas generated by the anode and the cathode includes: heat generated based on the tail gas generated by the anode after complete combustion through a burner and waste heat based on the tail gas generated by the cathode.

[0017] Optionally, the method further includes:

[0018] obtaining carbon dioxide and water vapor generated by the anode;

[0019] The carbon dioxide and the water vapor are transported to the gas mixing chamber to react with the synthesis gas.

[0020] Optionally, delivering the carbon dioxide and the water vapor to the gas mixing chamber comprises:

[0021] According to the second flow rate adjustment, the flow rates of methane and carbon monoxide in the synthesis gas are obtained;

[0022] Based on the flow rates of methane and carbon monoxide in the synthesis gas, the total flow rate of the carbon dioxide and the water vapor delivered to the mixing chamber is controlled by a third flow rate adjustment.

[0023] The present invention also provides a system for converting synthesis gas into electrical energy using a solid oxide fuel cell, the system comprising:

[0024] An air delivery module, used for sequentially performing a first filtering process, a first flow rate adjustment and a first preheating process on the air, and delivering the preheated air to the solid oxide fuel cell as a cathode;

[0025] a synthesis gas and carbon dioxide delivery module, for sequentially performing a second filtering process and a second flow regulation on the synthesis gas, reacting the flow-regulated synthesis gas with the third flow-regulated carbon dioxide in a gas mixing chamber to obtain a mixed gas, performing a second preheating on the mixed gas, and delivering the preheated mixed gas as an anode to the solid oxide fuel cell;

[0026] The solid oxide fuel cell module is used for the cathode and the anode to perform an electrochemical reaction inside the solid oxide fuel cell, and to generate heat based on the tail gas produced by the anode and the cathode after the electrochemical reaction, and the heat is used to ensure the first preheating and the second preheating.

[0027] Optionally, the system further comprises: an exhaust gas circulation unit for transporting the carbon dioxide and water vapor generated by the anode to the gas mixing chamber.

[0028] Optionally, the synthesis gas and carbon dioxide delivery module further comprises:

[0029] a first filtering unit, used for removing solid particles in the synthesis gas through a gas filter to obtain the synthesis gas after the solid particles are removed;

[0030] The second filtering unit is used to remove hydrogen sulfide gas from the synthesis gas after the solid particles are removed through a desulfurization device to obtain filtered synthesis gas.

[0031] Technical effects and advantages of the present invention:

[0032] The present invention provides a method for converting synthesis gas into electric energy by using a solid oxide fuel cell, the method comprising: performing a first filtering treatment, a first flow regulation and a first preheating treatment on air in sequence, and using the preheated air as the cathode of the solid oxide fuel cell; performing a second filtering treatment and a second flow regulation on the synthesis gas in sequence, and reacting the flow-regulated synthesis gas with carbon dioxide after a third flow regulation in a gas mixing chamber to obtain a mixed gas; performing a second preheating on the mixed gas, and using the preheated mixed gas as the anode of the solid oxide fuel cell; the cathode and the anode perform an electrochemical reaction inside the solid oxide fuel cell, and heat is generated based on the tail gas generated by the anode and the cathode after the electrochemical reaction, and the heat is used to ensure the first preheating and the second preheating.

[0033] This method is more efficient than traditional thermal power generation, and causes less air pollution (during the operation of solid oxide fuel cells, the fuel is not mixed with the air and no combustion process is involved, so no air pollutants are generated) and noise (the operation of solid oxide fuel cells does not involve mechanical processes, so no noise pollution is generated). At the same time, it overcomes the shortcomings of traditional thermal power generation that generate pollution and have low energy conversion efficiency (during the operation of solid oxide fuel cells, chemical energy is directly converted into higher-grade electrical energy through electrochemical reactions, and is not restricted by the Carnot cycle, thus avoiding energy dissipation generated in the multi-stage energy conversion process), greatly enhancing the application potential of underground coal synthesis gas in power generation.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flow chart of a method for converting synthesis gas into electrical energy using a solid oxide fuel cell;

[0036] Figure 2 A diagram of a system for converting syngas into electrical energy using a solid oxide fuel cell;

[0037] Figure 3 The voltage curve of the solid oxide fuel cell that simulates the synthesis gas produced in the Swan Hills pilot project for 100 hours of discharge;

[0038] Figure 4 This is the discharge diagram of a single cathode battery;

[0039] Figure 5 Fuel cell discharge curves when adding different amounts of carbon dioxide to the syngas produced in the Swan Hills pilot project;

[0040] Description of the drawings: 1-first gas compressor; 2-first gas filter; 3-first flow controller; 4-first gas heat exchanger; 5-second gas compressor; 2-second gas filter; 7-desulfurizer; 8-second flow controller; 9-gas mixing chamber; 10-second gas heat exchanger; 11-pressure reducing valve; 12-third flow controller; 13-fourth flow controller; 14-solid oxide fuel cell; 15-burner. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings provided by the present invention, and the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0042] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0043] In order to better understand the present invention, the concept of the present invention is briefly introduced first.

[0044] Solid oxide fuel cell (SOFC) is a fully solid-state high-temperature fuel cell with the characteristics of high efficiency, environmental protection, and high energy density. Compared with traditional power generation methods such as thermal power generation, the use of solid oxide fuel cells for syngas power generation has the following advantages: No air pollution: During the operation of solid oxide fuel cells, the fuel does not mix with the air and does not involve a combustion process, so no air pollutants are generated. The use of solid oxide fuel cells for power generation has effectively solved the problem of air pollution in thermal power generation; No noise pollution: The operation of solid oxide fuel cells does not involve mechanical processes, so no noise pollution is generated, which has effectively solved the noise pollution problem in thermal power generation; High energy conversion efficiency: During the operation of solid oxide fuel cells, chemical energy is directly converted into higher-grade electrical energy through electrochemical reactions, and is not restricted by the Carnot cycle, avoiding energy dissipation generated in the multi-stage energy conversion process. The most advanced solid oxide fuel cell at present can achieve a power generation efficiency of more than 20%. If the solid oxide fuel cell is used in conjunction with a gas turbine (GT), the maximum power generation efficiency can reach 70%. High value of waste heat utilization: Since solid oxide fuel cells are high-temperature fuel cells, the waste heat generated is at a very high temperature and can be collected to achieve high-value utilization.

[0045] Therefore, the present invention utilizes a solid oxide fuel cell to efficiently convert the synthesis gas obtained from underground coal gasification production into electrical energy. Specifically, after the synthesis gas and air are purified, pressurized, and heated, they enter the anode and cathode of the solid oxide fuel cell respectively to undergo electrochemical reactions and generate electrical energy. The tail gas after power generation is burned to recover unused chemical energy and thermal energy. In order to reduce the risk of carbon deposition caused by the use of hydrocarbon fuels, the present invention adds a certain amount of carbon dioxide to the synthesis gas. At the same time, part of the anode tail gas is recycled and mixed with fresh synthesis gas to reduce the demand for external carbon dioxide. Through these measures, long-term stable and efficient operation of the power generation system can be achieved.

[0046] The following combination Figure 1 and Figure 2 The power generation method of syngas and solid fuel cells based on underground coal gasification is introduced in detail. It should be noted that the air delivery module includes: a first gas compressor 1, a first gas filter 2, a first flow controller 3, and a first gas heat exchanger 4; the syngas and carbon dioxide delivery module includes: a second gas compressor 5, a second gas filter 2, a desulfurizer 7, a second flow controller 8, a gas mixing chamber 9, a second gas heat exchanger 10, a pressure reducing valve 11, and a third flow controller 12; the solid oxide fuel cell unit module includes: a fourth flow controller 13, a solid oxide fuel cell 14, and a burner 15.

[0047] 1. Performing a first filtering treatment, a first flow rate adjustment and a first preheating treatment on the air in sequence, and using the preheated air as the cathode of the solid oxide fuel cell.

[0048] Specifically: the air needs to first use the first gas compressor 1 to provide a certain initial pressure, then pass through the first gas filter 2 to filter out the solid particles therein (first filtration), and then under the control of the first flow controller 3 (first flow regulation), it is preheated (first preheating) by the first gas heat exchanger 4 before entering the cathode of the solid oxide fuel cell 14 to participate in the electrochemical reaction.

[0049] 2. Performing a second filtering treatment and a second flow adjustment on the synthesis gas in sequence, and reacting the synthesis gas after the flow adjustment with the carbon dioxide after the third flow adjustment in a gas mixing chamber to obtain a mixed gas.

[0050] Specifically, the synthesis gas produced by underground coal gasification technology first passes through the second gas compressor 5, then passes through the second gas filter 2 to remove the solid particles that may be contained therein, and then passes through the desulfurizer 7 to remove the sulfur-containing substances in the synthesis gas. The fully filtered synthesis gas passes through the second flow controller 8 (second flow regulation) into the mixing chamber 9.

[0051] Since the carbon dioxide is compressed carbon dioxide, it needs to be decompressed first, so it first passes through the pressure reducing valve 11, and then enters the mixing chamber 9 through the third flow controller 12 (third flow regulation) and is mixed with the filtered synthesis gas.

[0052] 3. Perform a second preheating on the mixed gas, and use the preheated mixed gas as the anode of the solid oxide fuel cell.

[0053] Specifically, the mixed air enters the second air heat exchanger 10 for preheating (second preheating), and then enters the anode of the solid oxide fuel cell to participate in the electrochemical reaction.

[0054] 4. The cathode and the anode perform an electrochemical reaction inside the solid oxide fuel cell, and generate heat based on the tail gas produced by the anode and the cathode after the electrochemical reaction, and the heat is used to ensure the first preheating and the second preheating.

[0055] Specifically, the above-mentioned synthesis gas and air react in the solid oxide fuel cell 14 to generate electricity, which is supplied to the power user through the power grid. After the tail gas generated by the anode is completely burned by the burner 15, the heat generated and the waste heat of the cathode tail gas are absorbed by the heat exchanger and used to heat the preheater.

[0056] The method further includes: obtaining carbon dioxide and water vapor generated by the anode; and transporting the carbon dioxide and water vapor to the gas mixing chamber. Specifically, a large amount of carbon dioxide and water vapor generated by the anode partially enter the gas mixing chamber 9 under the control of the fourth flow controller 13 to participate in the reforming reaction of the synthesis gas.

[0057] The present invention also provides specific embodiments, which are as follows:

[0058] The process flow of using solid oxide fuel cells to generate electricity using syngas obtained from underground coal gasification is as follows:

[0059] Step 1: Air enters the air compressor through the pipeline, and the air compressor provides pressure for air transportation. The gas pressurized by the air compressor enters the gas filter through the pipeline to remove particulate matter and other impurities in the air. The filtered air uses a mass flow controller to adjust the flow rate, and then enters the solid oxide fuel cell after being preheated by the gas heat exchanger.

[0060] The air flow rate is three times that of the synthesis gas flow rate, and the preheating temperature is selected to be 240-220°C, preferably about 250°C.

[0061] Step 2: The syngas first passes through a gas filter to remove any solid particles that may be contained in it, and then passes through a desulfurizer to remove hydrogen sulfide gas in the syngas to prevent impurities from damaging the battery. After that, the syngas flow entering the solid oxide fuel cell is controlled by a flow controller through a pipeline.

[0062] The flow rate of the syngas is related to the composition of the syngas, the power of the external electrical appliances and the scale of the fuel cell.

[0063] Step 3: After the compressed carbon dioxide is controlled by the flow controller, it enters the mixing chamber and mixes with the synthesis gas. It is dry reformed with the methane in the synthesis gas inside the battery to prevent carbon deposition. The amount of carbon dioxide added is determined according to the total flow of the gas composition of the synthesis gas (usually 2-3 times the total flow of carbon monoxide + methane).

[0064] Step 4: After being fully filtered, the syngas is mixed with carbon dioxide in the gas mixing chamber and then introduced into the gas heat exchanger. After the syngas is preheated by the gas heat exchanger, the preheating temperature is 240-220°C, preferably about 250°C. After being preheated, the syngas is introduced into the anode of the solid oxide fuel cell to carry out an electrochemical reaction inside the battery.

[0065] Step 5: After the synthesis gas passes through the solid oxide fuel cell, the main components of the tail gas produced are hydrogen, carbon monoxide, water vapor and carbon dioxide. After the tail gas is completely reacted through a burner, it releases additional heat, which is received by the heat exchanger with the waste heat of the cathode tail gas and used to heat the gas heat exchanger. At the same time, the carbon dioxide and water vapor produced in the anode tail gas are partially circulated back to the mixing chamber, mixed with the synthesis gas, and enter the battery again to undergo reforming reaction with the methane in the synthesis gas to inhibit carbon deposition (that is, water vapor and methane reforming reaction to generate carbon monoxide and hydrogen can also inhibit carbon deposition). The tail gas flow rate entering the mixing chamber is determined by the flow controller according to the amount of methane and carbon monoxide in the synthesis gas, and the range that can be selected is 2-3 times the total amount of methane and carbon monoxide in the synthesis gas.

[0066] In order to verify the effect of the present invention, a solid oxide fuel cell single cell test system was built. Figure 2 The discharge test was carried out using the simulated Swan Hills pilot syngas. The composition of the Swan Hills pilot syngas is shown in Table 1. The solid oxide fuel cell in the constructed system used a single cell for the discharge experiment. The discharge experiment adopted the constant current mode with a current of 300 mA cm -2 The flow rate of the synthesis gas selected in the experiment is 0.4L min -1 The flow rate of adding carbon dioxide is 0.4L min -1 , cathode air flow rate is 1.8L min -1 .

[0067] Table 1 Composition of syngas produced in the Swan Hills pilot project

[0068] <![CDATA[CH4]]> CO <![CDATA[CO2]]> <![CDATA[H2 <!-- 5 -->]]> Swan Hills 37％ 5％ 41％ 15％

[0069] The results of the discharge experiment are as follows Figure 3 At the beginning of discharge, the discharge voltage of the battery is 0.808V. After 100h of discharge, the discharge voltage of the battery slightly decays to 0.798V. And through calculation, it can be seen that its power density is 242.4mW cm -2 Down to 239.4 mW cm -2 The power density is calculated by multiplying the voltage in the figure by the current density.

[0070] The current density-open circuit voltage-power density curve of battery discharge when the temperature is 750℃, the hydrogen flow rate is 0.6L / min, and the air flow rate is 2L / min, such as Figure 4 As shown in the figure, as the open circuit voltage decreases, the power density of the battery will gradually increase, but it will also cause the current density to increase, thus damaging the battery life. When the open circuit voltage is 0.8V, the power density of the battery is 671mW cm -2 , which is the most suitable open circuit voltage value. Calculations show that when the open circuit voltage is 0.8V, without considering the thermoelectric coupling, the power generation efficiency of the solid oxide fuel cell at this time is 27.7%, which is higher than the power generation efficiency of an ideal heat engine (20%-25%). By combining with a steam turbine, the high-temperature waste heat in the tail gas of the solid oxide fuel cell can also be effectively utilized to further improve the energy conversion efficiency. During the experiment, the anode and cathode tail gases were taken for gas composition analysis. The main components of the anode tail gas are water vapor and carbon dioxide, as well as unreacted hydrogen and carbon monoxide. The main components of the cathode tail gas are nitrogen and oxygen, and no atmospheric pollutants were detected. The solid oxide fuel cell runs quietly and no noise is generated. It can be seen from this that the solid oxide fuel cell single cell test system in the present invention effectively overcomes the shortcomings of thermal power generation and is feasible.

[0071] In order to study the effect of adding carbon dioxide on slowing down carbon deposition and performance degradation, the discharge voltage-time curve of the syngas produced in the Swan Hills pilot project was simulated under the condition of adding different proportions of carbon dioxide, such as Figure 5 As shown. When 50vol% (volume fraction) carbon dioxide is added, the battery decay rate is 2% per 100 hours; when 30vol% carbon dioxide is added, the battery decay rate is 3% per 100 hours; when no carbon dioxide is added, the battery decay rate is 7% per 100 hours. This shows that increasing the proportion of carbon dioxide can inhibit the decay caused by carbon deposition.

[0072] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for converting synthesis gas into electrical energy using a solid oxide fuel cell, characterized in that: The method comprises: performing a first filtering process, a first flow rate adjustment and a first preheating process on the air in sequence, and using the preheated air as a cathode of a solid oxide fuel cell; performing a second filtering process and a second flow adjustment on the synthesis gas in sequence, and reacting the synthesis gas after the flow adjustment with the carbon dioxide after the third flow adjustment in a gas mixing chamber to obtain a mixed gas; performing a second preheating on the mixed gas, and using the preheated mixed gas as an anode of a solid oxide fuel cell; The cathode and the anode perform an electrochemical reaction inside the solid oxide fuel cell, and generate heat based on tail gas produced by the anode and the cathode after the electrochemical reaction, and the heat is used to ensure the first preheating and the second preheating.

2. The method according to claim 1, characterized in that The temperatures of the first preheating and the second preheating are both 240-260°C.

3. The method according to claim 1, characterized in that The ratio of the air flow rate adjusted based on the first flow rate to the synthesis gas flow rate adjusted based on the second flow rate is 3:

1.

4. The method according to claim 1, characterized in that: The synthesis gas is subjected to a second filtering process, comprising: Removing solid particles from the synthesis gas through a gas filter to obtain the synthesis gas after the solid particles are removed; The hydrogen sulfide gas in the synthesis gas after the solid particles are removed is removed by a desulfurization device to obtain filtered synthesis gas.

5. The method according to claim 1, characterized in that: The carbon dioxide flow rate adjusted based on the third flow rate is determined by the total flow rates of methane and carbon monoxide in the synthesis gas.

6. The method according to claim 1, characterized in that The heat generated based on the tail gas generated by the anode and the cathode includes: the heat generated after the tail gas generated by the anode is completely burned by the burner and the waste heat of the tail gas generated by the cathode.

7. The method according to claim 1, characterized in that The method further comprises: obtaining carbon dioxide and water vapor generated by the anode; The carbon dioxide and the water vapor are transported to the gas mixing chamber to react with the synthesis gas.

8. The method according to claim 7, characterized in that The method comprises: delivering the carbon dioxide and the water vapor to the gas mixing chamber, comprising: According to the second flow rate adjustment, the flow rates of methane and carbon monoxide in the synthesis gas are obtained; Based on the flow rates of methane and carbon monoxide in the synthesis gas, the total flow rate of the carbon dioxide and the water vapor delivered to the mixing chamber is controlled by a third flow rate adjustment.

9. A system for converting synthesis gas into electrical energy using a solid oxide fuel cell, characterized in that: The system comprises: An air delivery module, used for sequentially performing a first filtering process, a first flow rate adjustment and a first preheating process on the air, and delivering the preheated air to the solid oxide fuel cell as a cathode; a synthesis gas and carbon dioxide delivery module, for sequentially performing a second filtering process and a second flow regulation on the synthesis gas, reacting the flow-regulated synthesis gas with the third flow-regulated carbon dioxide in a gas mixing chamber to obtain a mixed gas, performing a second preheating on the mixed gas, and delivering the preheated mixed gas as an anode to the solid oxide fuel cell; The solid oxide fuel cell module is used for the cathode and the anode to perform an electrochemical reaction inside the solid oxide fuel cell, and to generate heat based on the tail gas produced by the anode and the cathode after the electrochemical reaction, and the heat is used to ensure the first preheating and the second preheating.

10. The system according to claim 9, characterized in that The system further comprises: a tail gas circulation unit, which is used for transporting the carbon dioxide and water vapor generated by the anode to the gas mixing chamber.

11. The system according to claim 9, characterized in that The synthesis gas and carbon dioxide delivery module also includes: a first filtering unit, used for removing solid particles in the synthesis gas through a gas filter to obtain the synthesis gas after the solid particles are removed; The second filtering unit is used to remove hydrogen sulfide gas from the synthesis gas after the solid particles are removed through a desulfurization device to obtain filtered synthesis gas.

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