Method for producing synthetic fuel

Abstract

To provide a method for producing a synthetic fuel capable of reducing carbon dioxide emissions into the atmosphere.SOLUTION: There is provided a method for producing a synthetic fuel which comprises: a gasification step (G) of gasifying a waste product by reacting with oxygen and water at a high temperature; a carbon dioxide separation step (S) of separating carbon dioxide from a gasified gas (1) produced in the step (G); an FT synthesis step of subjecting a synthesis gas (2) in which carbon dioxide is separated in the step (S) to Fischer-Tropsch synthesis to produce a synthesis fuel and further comprises a carbon dioxide electrolysis step (E) of electrolyzing carbon dioxide separated in the step (S) to produce an electrolysis gas (3) containing carbon monoxide and carbon dioxide and a methanol synthesis step (M) of reacting the electrolysis gas (3) produced in the step (E) with hydrogen to produce methanol.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for producing synthetic fuels such as SAF (Sustainable aviation fuel) and diesel fuel from waste such as biomass, and more particularly to a method for producing synthetic fuels capable of reducing the amount of carbon dioxide emitted into the atmosphere during the gasification reaction of waste with oxygen and water.

Background Art

[0002] Conventionally, there has been known a technique for gasifying waste such as woody biomass and MSW (Municipal Solid Waste) with oxygen and water in a gasification furnace, and subjecting the obtained carbon monoxide and hydrogen to Fischer-Tropsch (FT) synthesis to produce synthetic fuels.

[0003] FIG. 2 is a flowchart showing an example of each step of a conventional method for producing synthetic fuels. The method shown in FIG. 2 involves a gasification step (G) in which waste such as woody biomass and MSW is reacted with oxygen and water at a high temperature to be gasified, generating a gasification gas (1) containing carbon dioxide, carbon monoxide, and hydrogen, a carbon dioxide separation step (S) in which carbon dioxide is separated from the gasification gas (1) generated in the gasification step (G), and an FT synthesis step in which a synthesis gas (2) (a gas containing carbon monoxide and hydrogen) from which carbon dioxide has been separated in the carbon dioxide separation step (S) is subjected to FT synthesis to produce synthetic fuel. In this conventional method, the carbon dioxide separated in the carbon dioxide separation step (S) is usually discharged into the atmosphere.

[0004] In addition, as a method for producing synthetic fuels using carbon dioxide as one of the raw materials, there is, for example, the method described in Patent Document 1. Patent Document 1 discloses a process in which carbon dioxide and water are co-electrolyzed in a synthesis gas generation cell (solid oxide electrolysis cell) to be converted into carbon monoxide and hydrogen, and then this is converted into a hydrocarbon fuel in a catalytic reactor.

[0005] When producing synthetic fuels such as SAF from waste such as biomass by FT synthesis, the reaction formula is represented as follows. C p H q +pH2O → pCO+(p+(q / 2))H2(1) CO+H2O ←→ CO2+H2(2) nCO+(2n+1)H2→ C n H 2n+2 +nH2O (3)

[0006] The above reaction formula (1) represents a reaction that generates carbon monoxide (CO) and hydrogen gas (H2) by partially burning or steam gasifying waste. And reaction formula (3) represents a reaction that generates synthetic fuel (C n H 2n+2 ) from carbon monoxide (CO) and hydrogen gas (H2). The amount of hydrogen gas (H2) used relative to the amount of carbon monoxide (CO) used is more than twice (2n + 1). On the other hand, as represented by reaction formula (2), a shift reaction occurs between carbon monoxide and water (CO + H2O) and carbon dioxide and hydrogen gas (CO2 + H2). As a result, when the production amount of carbon monoxide (CO) is large, the production amount of hydrogen gas (H2) decreases, and conversely, when the production amount of hydrogen gas (H2) is large, the production amount of carbon monoxide (CO) decreases. Therefore, when increasing the production amount of hydrogen gas (H2) to more than twice the production amount of carbon monoxide, the production amount of carbon monoxide (CO) decreases accordingly. Moreover, the production amount of carbon dioxide (CO2) discharged into the atmosphere increases.

[0007] Also, Patent Document 2 discloses a process of generating hydrogen using renewable energy, synthesizing methanol using the generated hydrogen and carbon dioxide recovered from exhaust gas, and converting the methanol into gasoline.

[0008] Also, Patent Document 3 discloses a method for producing methanol from the product gas generated by gasifying biomass. In this method, hydrogen gas generated by electrolyzing water is supplied so that the amount of hydrogen gas relative to the amount of carbon monoxide in the product gas is more than twice.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0010] In the conventional method shown in FIG. 2, the carbon dioxide separated in the carbon dioxide separation step (S) is usually discharged into the atmosphere. However, discharging a large amount of carbon dioxide, which is one of the greenhouse gases, into the atmosphere is not preferable from the viewpoint of preventing global warming. Therefore, the present inventor has studied an effective recycling method for carbon dioxide in order to reduce the amount of carbon dioxide discharged into the atmosphere.

[0011] That is, an object of the present invention is to provide a method for producing a synthetic fuel capable of reducing the amount of carbon dioxide discharged into the atmosphere. Another object of the present invention is to provide a method for producing methanol or gasoline together with the synthetic fuel.

Means for Solving the Problems

[0012] As a result of intensive studies to achieve the above object, the present inventor has combined steps such as a carbon dioxide electrolysis step with the conventional method shown in FIG. 2, recycled carbon monoxide generated by electrolysis as a raw material for methanol synthesis, and more preferably, synthesized gasoline from this methanol, and found that this is very effective, thus completing the present invention. That is, the present invention is specified by the following matters.

[0013] [1] A gasification step (G) in which waste is reacted with oxygen and water to be gasified to produce a gasified gas (1) containing carbon dioxide, carbon monoxide, and hydrogen; A carbon dioxide separation step (S) in which carbon dioxide is separated from the gasified gas (1) produced in the gasification step (G); An FT synthesis step in which the synthesis gas (2) from which carbon dioxide has been separated in the carbon dioxide separation step (S) is subjected to Fischer-Tropsch synthesis to produce a synthetic fuel; In a method for producing a synthetic fuel having: Further, a carbon dioxide electrolysis step (E) in which the carbon dioxide separated in the carbon dioxide separation step (S) is electrolyzed to produce an electrolysis gas (3) containing carbon monoxide and carbon dioxide; A methanol synthesis step (M) in which the electrolysis gas (3) produced in the carbon dioxide electrolysis step (E) is reacted with hydrogen to produce methanol; A method for producing a synthetic fuel, characterized by having the above.

[0014] [2] Further, the method for producing a synthetic fuel according to [1], having an MTG step in which gasoline is produced by reacting the methanol produced in the methanol synthesis step (M).

[0015] [3] Further, having a water electrolysis step (WE) in which water is electrolyzed to produce oxygen and hydrogen, supplying the produced hydrogen to the methanol synthesis step (M), and supplying the produced oxygen to the gasification step (G), the method for producing a synthetic fuel according to [1] or [2].

[0016] [4] Further, having an oxygen separation step in which oxygen is separated from air, and supplying the separated oxygen to the gasification step (G), the method for producing a synthetic fuel according to any one of [1] to [3].

[0017] [5] An improved method for reducing the amount of carbon dioxide discharged into the atmosphere from an existing synthetic fuel production facility, A gasification device (g) in which waste is reacted with oxygen and water at a high temperature to be gasified to produce a gasified gas (1) containing carbon dioxide, carbon monoxide, and hydrogen; A carbon dioxide separation device (s) that separates carbon dioxide from the gasification gas (1) generated in the gasification device (g), An FT synthesis device that performs Fischer-Tropsch synthesis on the synthesis gas (2) from which carbon dioxide has been separated in the carbon dioxide separation device (s) to produce synthetic fuel, For an existing synthetic fuel production facility having, A carbon dioxide electrolysis device (e) that electrolyzes the carbon dioxide separated in the carbon dioxide separation device (s) to generate electrolysis gas (3) containing carbon monoxide and carbon dioxide, An improved method for a synthetic fuel production facility, characterized by adding a methanol synthesis device (m) that reacts the electrolysis gas (3) generated in the carbon dioxide electrolysis device (e) with hydrogen to produce methanol.

[0018] [6] Further, an improved method for a synthetic fuel production facility according to [5], characterized by adding an MTG device that produces gasoline by reacting the methanol generated in the methanol synthesis device (m).

[0019] [7] Further, an improved method for a synthetic fuel production facility according to [5] or [6], characterized by adding a water electrolysis device (we) that electrolyzes water to generate oxygen and hydrogen, supplying the generated hydrogen to the methanol synthesis device (m), and supplying the generated oxygen to the gasification device (g). [Advantages of the Invention]

[0020] In the present invention, a part of the carbon dioxide that was discharged into the atmosphere by the conventional method is reduced to carbon monoxide in the carbon dioxide electrolysis step (E) and recycled as a raw material for methanol synthesis, so that the amount of carbon dioxide discharged into the atmosphere can be reduced.

[0021] Furthermore, it is preferable to supply hydrogen generated by electrolyzing water to the methanol synthesis step. This makes it possible to supplement hydrogen in the raw material gas in methanol synthesis. In this case, the molar amount of hydrogen generated by electrolyzing water and supplied to the methanol synthesis step is preferably at least twice the molar amount of carbon monoxide in the electrolysis gas (3). This optimizes the composition balance of the raw material gas in the methanol synthesis step.

[0022] Furthermore, it is also preferable to supply oxygen generated by electrolyzing water to the gasification step (G). By using this oxygen for gasifying waste, the load on the oxygen separation step can be reduced.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0024] FIG. 1 is a flowchart showing an example of each step of the method for producing synthetic fuel of the present invention. Hereinafter, each step will be described.

[0025] [Oxygen Separation Step] The oxygen separation step shown in FIG. 1 is a step of separating oxygen from air. The oxygen separated in this oxygen separation step is supplied to the gasification step (G) described later.

[0026] As a method for separating oxygen from air in this oxygen separation step, typically, a method (Vacuum Pressure Swing Adsorption (VPSA) method) of adsorbing gases other than oxygen in air (such as nitrogen) onto an adsorbent (e.g., synthetic zeolite) by adjusting the pressure to obtain high-purity oxygen gas can be mentioned. The adsorbed gases other than oxygen (such as nitrogen) may be discharged into the atmosphere. Regarding the specific reaction conditions, types of adsorbents, and reactor configurations, known conditions, types, and configurations related to oxygen separation technology can be adopted without limitation.

[0027] In the present invention, it is preferable to use the above-described VPSA process as one of the steps for obtaining oxygen for supply to the gasification step (G). However, the present invention is not limited thereto. Instead of the VPSA process, high-purity oxygen gas may be obtained by other known methods (such as cryogenic separation method) and supplied to the gasification step (G). Although the VPSA process is often advantageous in terms of economy, for example, in a small-scale plant, the cryogenic separation method may be more advantageous in terms of economy.

[0028] [Gasification step (G)] The gasification step (G) shown in FIG. 1 is a step of gasifying waste, oxygen, and water by reacting them at a high temperature to produce a gasification gas (1) [CO2 / CO / H2] containing carbon dioxide, carbon monoxide, and hydrogen. The gasification gas (1) [CO2 / CO / H2] produced in this gasification step (G) is supplied to the carbon dioxide separation step (S) described later.

[0029] As a method for gasifying waste, oxygen, and water by reacting them at a high temperature in this step (G), typically, a method of supplying waste, oxygen, and water to a gasification furnace (melting furnace) and reacting them at a predetermined temperature and pressure can be mentioned. Regarding the specific reaction conditions and reactor configurations, known conditions and configurations related to gasification technology can be adopted without limitation. For example, the reaction temperature is usually 700°C or higher, preferably 800°C to 1200°C.

[0030] In the gasification process (G), the waste used as a raw material is, for example, lignocellulosic biomass or MSW (Municipal Solid Waste). However, the present invention is not limited thereto. For example, waste such as herbaceous biomass or PKS (Palm Kernel Shell) can also be used.

[0031] [Carbon dioxide separation process (S)] The carbon dioxide separation process (S) shown in FIG. 1 is a process for separating carbon dioxide from the gasification gas (1) [CO2 / CO / H2] generated in the gasification process (G).

[0032] The carbon dioxide separated in this carbon dioxide separation process (S) is not discharged into the atmosphere but is supplied to the carbon dioxide electrolysis process (E) described later for recycling. As a result, the amount of carbon dioxide discharged into the atmosphere can be reduced.

[0033] On the other hand, the gas after carbon dioxide is separated, that is, the synthesis gas (2) [CO / H2] containing carbon monoxide and hydrogen, is supplied as a raw material for synthetic fuel to the FT synthesis process described later.

[0034] As a method for separating carbon dioxide from the gasification gas (1) in this process (S), typically, a chemical absorption method is used in which carbon dioxide is absorbed by an absorbent such as an amine in an absorption process and carbon dioxide is separated by heating the absorbent in a regeneration process. Regarding the specific reaction conditions and reaction apparatus configuration, known conditions and configurations related to carbon dioxide separation technology can be adopted without limitation.

[0035] [Carbon dioxide electrolysis process (E)] The carbon dioxide electrolysis process (E) shown in FIG. 1 is a process for electrolyzing the carbon dioxide separated in the carbon dioxide separation process (S) to generate an electrolysis gas (3) [CO / CO2] containing carbon monoxide and carbon dioxide. The electrolysis gas (3) [CO / CO2] generated in this carbon dioxide electrolysis process (E) is supplied to the methanol synthesis process (M) described later.

[0036] The carbon dioxide electrolysis step (E) is typically a step of reducing a part of carbon dioxide to carbon monoxide by electrolysis. Therefore, the electrolysis gas (3) [CO / CO2] produced is typically a mixed gas of carbon monoxide produced by reduction and carbon dioxide that has not been reduced. Regarding the specific electrolysis conditions and electrolysis apparatus configuration, known conditions and configurations related to carbon dioxide electrolysis technology can be adopted without limitation.

[0037] This step of reducing a part of carbon dioxide to carbon monoxide by electrolysis can be electrolyzed at a low temperature (less than 100°C) compared to the method described in Patent Document 1 (a method of converting carbon dioxide and water into carbon monoxide and hydrogen by co-electrolysis at a high temperature (500°C or higher) in a solid oxide electrolysis cell). There is also an advantage that the problem of performance degradation due to the adhesion of deposited carbon to the electrode does not occur.

[0038] Then, the electrolysis gas (3) generated in the carbon dioxide electrolysis step (E) is supplied to the methanol synthesis step (M) described later and used as a raw material for methanol.

[0039] It is preferable to use electric power (renewable energy power) generated by renewable energy in the carbon dioxide electrolysis step (E). Renewable energy is energy that always exists in nature such as sunlight, wind power, geothermal energy, and hydraulic power, and is characterized by not emitting carbon dioxide during power generation. Using this renewable energy power in the carbon dioxide electrolysis step (E) is in line with the object of the present invention to reduce the amount of carbon dioxide emissions.

[0040] [Water electrolysis step (WE)] The water electrolysis step (WE) shown in FIG. 1 is a step of electrolyzing water to generate oxygen and hydrogen. Regarding the specific electrolysis conditions and electrolysis apparatus configuration in this step (WE), known conditions and configurations related to water electrolysis technology can be adopted without limitation.

[0041] In the water electrolysis process (WE), the generated hydrogen is supplied to the methanol synthesis process (M) described later. Then, the electrolytic gas (3) reacts with hydrogen to produce methanol. The molar amount of hydrogen generated in the water electrolysis process (WE) and supplied to the Fischer-Tropsch synthesis process is preferably at least twice the molar amount of carbon monoxide in the electrolytic gas (3). This improves the composition balance of the raw material gas in the methanol synthesis process (M).

[0042] On the other hand, the oxygen generated in the water electrolysis process (WE) is supplied to the gasification process (G). By using this oxygen for the gasification of waste, the load on the oxygen separation process can be reduced.

[0043] In the water electrolysis process (WE), it is preferable to use electric power generated by renewable energy, as in the case of the carbon dioxide electrolysis process (E) described above.

[0044] In the present invention, it is preferable to use the water electrolysis process (WE) described above as one of the processes for generating hydrogen to be supplied to the methanol synthesis process (M). However, the present invention is not limited to this. Instead of the water electrolysis process (WE), hydrogen may be generated by other known methods and supplied to the methanol synthesis process (M).

[0045] [Fischer-Tropsch synthesis process] The Fischer-Tropsch (FT) synthesis process shown in FIG. 1 is a process in which synthesis gas (2) from which carbon dioxide has been separated in the carbon dioxide separation process (S), that is, synthesis gas (2) [CO / H2] containing carbon monoxide and hydrogen, is subjected to Fischer-Tropsch (FT) synthesis to produce synthetic fuel.

[0046] Fischer-Tropsch (FT) synthesis is a synthesis method for obtaining synthetic fuels (gases and liquid hydrocarbons) from carbon monoxide and hydrogen by a catalytic reaction. As the catalyst, compounds of iron or cobalt are usually used. Regarding the specific reaction conditions, catalyst types, and reactor configurations in this FT synthesis, known conditions, types, and configurations related to FT synthesis technology can be adopted without limitation.

[0047] Through this FT synthesis process, SAF (Sustainable aviation fuel) and other synthetic fuels can be obtained. Examples of other synthetic fuels include kerosene, diesel, and naphtha. In addition, the gas fraction generated during synthesis is either used as fuel gas or burned, such as in a flare, and released into the atmosphere as off-gas.

[0048] [Methanol synthesis process (M)] The methanol synthesis process (M) shown in Figure 1 is a process of reacting the electrolysis gas (3) generated in the carbon dioxide electrolysis process (E), that is, the electrolysis gas (3) containing carbon monoxide and carbon dioxide, with hydrogen to produce methanol.

[0049] In this process (M), typically, carbon monoxide, carbon dioxide, and hydrogen are reacted by a catalytic reaction to produce methanol. Regarding the specific reaction conditions, the type of catalyst, and the configuration of the reaction apparatus, known conditions, types, and configurations related to methanol synthesis technology can be adopted without limitation.

[0050] In the methanol synthesis process (M), by using the electrolysis gas (3) containing carbon monoxide and carbon dioxide as a raw material as described above, there is also an advantage that methanol synthesis using a general catalyst such as a copper-based catalyst becomes easier compared to the case of using only carbon dioxide as a raw material. Furthermore, by using the electrolysis gas (3) as a raw material, a synthesis gas with a composition that satisfies the optimal R value for methanol synthesis, R = (H2 - CO2) / (CO + CO2) = 2, can be easily produced, and methanol can be synthesized efficiently.

[0051] [MTG process] The MTG process shown in Figure 1 is a process of producing gasoline by reacting the methanol generated in the methanol synthesis process (M).

[0052] In this MTG process, typically, methanol is reacted by a catalytic reaction to produce gasoline. Regarding the specific reaction conditions, types of catalysts, and reaction apparatus configurations, known conditions, types, and configurations related to gasoline synthesis technology can be adopted without limitation.

[0053] In the present invention, it is preferable to produce gasoline from methanol by the MTG process described above. However, the present invention is not limited thereto. The methanol produced in the methanol synthesis step (M) may be used as a raw material for other compounds, or the methanol may be used as a chemical product as it is.

[0054] [Improvement Method for Synthetic Fuel Production Equipment] The synthetic fuel production method of the present invention described above can be implemented by newly constructing all the apparatuses for carrying out each step. However, it can also be implemented by adding a carbon dioxide electrolyzer and, if necessary, other apparatuses (for example, a water electrolyzer, an MTG apparatus) to the existing production equipment.

[0055] That is, the improvement method for the synthetic fuel production equipment of the present invention is an improvement method for reducing the amount of carbon dioxide discharged into the atmosphere from the apparatuses of the existing synthetic fuel production equipment. It includes a gasification device (g) that reacts waste, oxygen, and water at a high temperature to gasify them and generate a gasified gas (1) containing carbon dioxide, carbon monoxide, and hydrogen, a carbon dioxide separation device (s) that separates carbon dioxide from the gasified gas (1) generated in the gasification device (g), and an FT synthesis device that performs Fischer-Tropsch synthesis on the synthetic gas (2) from which carbon dioxide has been separated in the carbon dioxide separation device (s) to produce synthetic fuel. For the existing synthetic fuel production equipment having these, a carbon dioxide electrolyzer (e) that electrolyzes the carbon dioxide separated in the carbon dioxide separation device (s) to generate an electrolyzed gas (3) containing carbon monoxide and carbon dioxide, and a methanol synthesis device (m) that reacts the electrolyzed gas (3) generated in the carbon dioxide electrolyzer (e) with hydrogen to produce methanol are added. This is an improvement method for synthetic fuel production equipment.

[0056] Furthermore, in this improved method, it is also preferable to add an MTG device that produces gasoline by reacting the methanol produced in the methanol synthesis device (m).

[0057] Furthermore, in this improved method, it is preferable to add a water electrolysis device (we) that electrolyzes water to produce oxygen and hydrogen, and supply the produced hydrogen to the methanol synthesis device (m). In this case, the molar amount of hydrogen produced by the water electrolysis device (we) supplied to the methanol synthesis device (m) is preferably 2 times or more the molar amount of carbon monoxide in the electrolytic gas (3). It is also preferable to supply the oxygen produced by the water electrolysis device (we) to the gasification device (g).

[0058] Adding a device such as a carbon dioxide electrolysis device to the existing manufacturing equipment in this way is advantageous in terms of equipment cost compared to the case of newly constructing all the equipment. Furthermore, by effectively using the carbon dioxide that was previously discharged in the existing manufacturing equipment, methanol can be newly produced.

Industrial Applicability

[0059] The present invention is very useful from the viewpoint of preventing global warming because it recycles carbon dioxide generated when producing synthetic fuel from waste and can reduce the amount of carbon dioxide discharged into the atmosphere.

Explanation of Symbols

[0060] (G) Gasification step (S) Carbon dioxide separation step (E) Carbon dioxide electrolysis step (WE) Water electrolysis step (M) Methanol synthesis step

Claims

1. A gasification step (G) in which waste, oxygen, and water are reacted at a high temperature to be gasified to produce a gasified gas (1) containing carbon dioxide, carbon monoxide, and hydrogen; A carbon dioxide separation step (S) in which carbon dioxide is separated from the gasified gas (1) produced in the gasification step (G); An FT synthesis step in which the synthesis gas (2) from which carbon dioxide has been separated in the carbon dioxide separation step (S) is subjected to Fischer-Tropsch synthesis to produce a synthetic fuel; In a method for producing a synthetic fuel having: Furthermore, a carbon dioxide electrolysis step (E) in which the carbon dioxide separated in the carbon dioxide separation step (S) is electrolyzed to produce an electrolysis gas (3) containing carbon monoxide and carbon dioxide; A methanol synthesis step (M) in which the electrolysis gas (3) produced in the carbon dioxide electrolysis step (E) is reacted with hydrogen to produce methanol; A water electrolysis step (WE) in which water is electrolyzed to produce oxygen and hydrogen, wherein the produced hydrogen is supplied to the methanol synthesis step (M) and the produced oxygen is supplied to the gasification step (G). A method for producing a synthetic fuel, characterized in that.

2. The method for producing a synthetic fuel according to claim 1, further comprising an MTG step in which gasoline is produced by reacting the methanol produced in the methanol synthesis step (M).

3. The method for producing a synthetic fuel according to claim 1 or 2, further comprising an oxygen separation step in which oxygen is separated from air, and the separated oxygen is supplied to the gasification step (G).

4. An improved method for reducing the amount of carbon dioxide discharged into the atmosphere from an existing synthetic fuel production facility apparatus, A gasification apparatus (g) in which waste, oxygen, and water are reacted at a high temperature to be gasified to produce a gasified gas (1) containing carbon dioxide, carbon monoxide, and hydrogen; A carbon dioxide separation apparatus (s) in which carbon dioxide is separated from the gasified gas (1) produced in the gasification apparatus (g); An FT synthesis apparatus in which the synthesis gas (2) from which carbon dioxide has been separated in the carbon dioxide separation apparatus (s) is subjected to Fischer-Tropsch synthesis to produce a synthetic fuel; For an existing synthetic fuel production facility having: A carbon dioxide electrolysis apparatus (e) in which the carbon dioxide separated in the carbon dioxide separation apparatus (s) is electrolyzed to produce an electrolysis gas (3) containing carbon monoxide and carbon dioxide; A methanol synthesis apparatus (m) in which the electrolysis gas (3) produced in the carbon dioxide electrolysis apparatus (e) is reacted with hydrogen to produce methanol; An improved method for a synthetic fuel production facility, characterized by adding a water electrolysis device (we) that electrolyzes water to produce oxygen and hydrogen, supplying the generated hydrogen to a methanol synthesis device (m), and supplying the generated oxygen to a gasification device (g).

5. The improved method for a synthetic fuel production facility according to claim 4, further comprising adding an MTG device that produces gasoline by reacting methanol generated in the methanol synthesis device (m).

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