Hydrocarbon production system and hydrocarbon production method

Abstract

This invention provides a hydrocarbon production system and a hydrocarbon production method that enable catalyst regeneration while suppressing a decrease in hydrocarbon production efficiency. [Solution] The hydrocarbon production system 1 is a hydrocarbon production system that produces a hydrocarbon product from raw materials containing at least one of carbon dioxide and carbon monoxide and hydrogen. The hydrocarbon production system 1 comprises a reactor 10 that produces hydrocarbons from raw materials and contains a catalyst containing at least one of iron and cobalt, and an alkali supply unit 30 that supplies an aqueous solution containing an alkaline component to the catalyst. The hydrocarbon production method is a hydrocarbon production method that produces hydrocarbons from raw materials containing at least one of carbon dioxide and carbon monoxide and hydrogen. The hydrocarbon production method comprises a hydrocarbon production step of producing hydrocarbons from raw materials using a catalyst containing at least one of iron and cobalt, and an alkali supply step of supplying an aqueous solution containing an alkaline component to the catalyst.

Description

Technical Field

[0001] The present disclosure relates to a hydrocarbon production system and a hydrocarbon production method.

Background Art

[0002] Hydrocarbons are widely used as energy sources and raw materials for chemical products, and it is known that they can be produced from raw materials containing carbon dioxide or carbon monoxide.

[0003] Patent Document 1 discloses a method for producing hydrocarbons from a raw material containing carbon dioxide or carbon monoxide using a Fischer-Tropsch reaction (FT reaction) and a reverse shift reaction, and a technique for extending the life of a catalyst used in the method and regenerating the catalyst. Specifically, in Patent Document 1, the supply of the raw material gas to the reactor is stopped, the temperature of the catalyst is raised to a predetermined temperature, the catalyst at the raised temperature is brought into contact with a gas containing oxygen to burn the deposited coke, and further the burned catalyst is brought into contact with hydrogen and reduced.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the Fischer-Tropsch reaction (FT reaction) and the reverse shift reaction, it is known that the reaction is promoted by adding an alkali component as a promoter. However, in the temperature range of 200°C to 400°C, which is the reaction condition, the alkali component dispersed on the catalyst surface gradually sinters and aggregates, resulting in a decrease in catalyst performance. In the catalyst regeneration method in Patent Document 1, it is necessary to stop the supply of the raw material gas to the reactor and then carry out the above-described steps, and the production efficiency of hydrocarbons has been reduced.

[0006] This disclosure aims to provide a hydrocarbon production system and a hydrocarbon production method that enable catalyst regeneration while suppressing a decrease in hydrocarbon production efficiency. [Means for solving the problem]

[0007] The hydrocarbon production system according to this disclosure is a hydrocarbon production system that produces a hydrocarbon product from raw materials containing at least one of carbon dioxide and carbon monoxide and hydrogen. The hydrocarbon production system comprises a reactor that produces hydrocarbons from raw materials and includes a catalyst containing at least one of iron and cobalt, and an alkali supply unit that supplies an aqueous solution containing an alkaline component to the catalyst.

[0008] The alkaline component may contain at least one of an alkali metal hydroxide and an alkali metal carbonate.

[0009] The hydrocarbon production system includes a reactor, a gas-liquid separation tank, and an alkali supply unit, and comprises multiple hydrocarbon production devices connected in series, wherein the gas-liquid separation tank may separate the product generated in the reactor into a gas containing hydrocarbons and a liquid containing hydrocarbons and water.

[0010] The hydrocarbon production method according to this disclosure is a hydrocarbon production method that produces hydrocarbons from raw materials containing at least one of carbon dioxide and carbon monoxide, and hydrogen. The hydrocarbon production method includes a hydrocarbon production step of producing hydrocarbons from the raw materials using a catalyst containing at least one of iron and cobalt, and an alkali supply step of supplying an aqueous solution containing an alkaline component to the catalyst. [Effects of the Invention]

[0011] This disclosure provides a hydrocarbon production system and a hydrocarbon production method that enable catalyst regeneration while suppressing a decrease in hydrocarbon production efficiency. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram showing a hydrocarbon production system according to one embodiment. [Figure 2] This is a schematic diagram showing a hydrocarbon production system according to another embodiment. [Modes for carrying out the invention]

[0013] Several exemplary embodiments will be described below with reference to the drawings. Note that the dimensional ratios in the drawings are exaggerated for illustrative purposes and may differ from the actual ratios.

[0014] [First Embodiment] First, a hydrocarbon production system 1 according to the first embodiment will be described using Figure 1. The hydrocarbon production system 1 produces a hydrocarbon product from raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen. As shown in Figure 1, the hydrocarbon production system 1 comprises a reactor 10 and an alkali supply unit 30. The hydrocarbon production system 1 may further include a gas-liquid separation tank 20.

[0015] Reactor 10 contains a catalyst comprising at least one of iron and cobalt, and produces a product containing hydrocarbons from raw materials comprising at least one of carbon dioxide and carbon monoxide, and hydrogen. In reactor 10, for example, the catalyst is placed in a flow channel through which the raw materials pass, and hydrocarbons and water are produced when the raw materials come into contact with the catalyst. The temperature conditions in reactor 10 are not particularly limited, but for example, the reaction temperature is preferably 200°C to 400°C, more preferably 250°C to 350°C, and even more preferably 270°C to 330°C. Similarly, the pressure conditions in reactor 10 are not particularly limited, but for example, the pressure is preferably 1.0 MPa to 3.0 MPa, and more preferably 1.2 MPa to 2.0 MPa.

[0016] In reactor 10, if the raw material contains carbon dioxide, the following two-step reactions (1) and (2) proceed, and if the raw material contains carbon monoxide, the reaction shown in reaction equation (2) proceeds. At least one of carbon dioxide and carbon monoxide reacts with hydrogen to produce hydrocarbons and water. The reaction in reaction equation (1) is called the reverse shift reaction, and the reaction in reaction equation (2) is called the Fischer-Tropsch reaction (FT reaction). Reactor 10 may be a known fixed-bed reactor, including, for example, a multi-tube reactor such as a shell-and-tube reactor. CO2 + H2 ←→ CO + H2O (1) nCO + 2nH2 → -(CH2) n -+nH2O (2)

[0017] The hydrocarbons produced in reactor 10 may contain at least one of alkanes and alkenes. At least one of the alkanes and alkenes may contain hydrocarbons having 1 to 4 carbon atoms. Examples of alkanes having 1 to 4 carbon atoms include methane, ethane, propane, and butane. Examples of alkenes having 1 to 4 carbon atoms include ethylene, propylene, 1-butene, 2-butene, isobutene, and 1,3-butadiene. Among these, methane, ethane, and propane can be used as fuel for city gas. Alkenes with 2 to 4 carbon atoms are also useful as raw materials for plastics. The reaction products may also contain compounds other than those mentioned above.

[0018] The carbon dioxide contained in the raw materials used in the reactor 10 may be supplied from a carbon dioxide supply unit (not shown) to the reactor 10. The carbon dioxide supply unit may include, for example, a carbon dioxide recovery unit that recovers carbon dioxide discharged from carbon dioxide sources such as power plants and factories. By using the carbon dioxide recovered from the carbon dioxide source as a raw material, the amount of carbon dioxide released into the atmosphere can be reduced. The carbon dioxide recovery unit may recover carbon dioxide, for example, by chemical absorption method, pressure swing adsorption method, temperature swing adsorption method, membrane separation and concentration method or a combination thereof. Note that the carbon dioxide supply unit is not limited to the above form, and may be, for example, a tank, a cylinder containing carbon dioxide, or a carbon dioxide gas generator.

[0019] The carbon monoxide contained in the raw materials used in the reactor 10 may be supplied from a carbon monoxide supply unit (not shown) to the reactor 10. The carbon monoxide supply unit may be, for example, a tank, a cylinder containing carbon monoxide, or a carbon monoxide gas generator. Also, carbon monoxide may be supplied to the reactor 10 by generating carbon monoxide from carbon dioxide. For example, carbon dioxide, methane and steam may be reacted in a reformer (not shown) that reforms them into carbon monoxide and hydrogen at a pressure of about 2 MPa and a temperature of about 1100 °C, and the generated carbon monoxide may be cooled and then supplied to the reactor 10.

[0020] The hydrogen contained in the raw materials used in the reactor 10 may be supplied from a hydrogen supply unit (not shown) to the reactor 10. The hydrogen supply unit may use, for example, renewable energy such as sunlight, wind power and hydraulic power, and may use the hydrogen obtained by electrolyzing water. By using such hydrogen, the amount of carbon dioxide emissions of the entire hydrocarbon production system 1 can be reduced. Note that the hydrogen supply unit is not limited to the above form, and may be, for example, a tank, a cylinder containing hydrogen, or a hydrogen gas generator.

[0021] The method for supplying the raw materials used in the reactor 10 is not limited to the above method. For example, it may be stored in a tank as a mixed raw material in which at least one of carbon dioxide and carbon monoxide and hydrogen are mixed, and supplied from the tank to the reactor 10.

[0022] The catalyst used in the reactor 10 contains at least one of iron and cobalt. When the raw material contains carbon dioxide, the catalyst preferably contains iron. When a catalyst containing iron is used, in the above reaction formula (1), it is considered that the hematite phase Fe2O3 which is an oxide is the active species, and in the above reaction formula (2), the Fe5C2 phase called cementite is considered to be the active species. When the two-step reactions of the above reaction formulas (1) and (2) proceed, the Fe2O3 phase and the Fe5C2 phase need to be mixed and present in an appropriate proportion in the catalyst containing iron. On the other hand, when the raw material contains carbon monoxide, the catalyst preferably contains at least one of iron and cobalt.

[0023] In order to promote the reactions of the above reaction formulas (1) and (2), it is known that an alkali component is added as a promoter to the catalyst containing at least one of iron and cobalt. By adding an alkali component as a promoter and allowing the catalyst and the promoter to coexist, the generation of olefins with respect to paraffins and the promotion of C-C bonds can be promoted to advance the generation of heavy hydrocarbons.

[0024] The alkali component preferably contains at least one of an alkali metal hydroxide and an alkali metal carbonate. Examples of the alkali metal include potassium, sodium, lithium, rubidium, cesium, etc. That is, the alkali metal hydroxide preferably contains at least one selected from the group consisting of potassium hydroxide, sodium hydroxide, lithium hydroxide, rubidium hydroxide and cesium hydroxide. Also, the alkali metal carbonate preferably contains at least one selected from the group consisting of potassium carbonate, sodium carbonate, lithium carbonate, rubidium carbonate and cesium carbonate.

[0025] It is preferable that the alkaline components are uniformly dispersed at the atomic level on the catalyst surface. However, within the reaction temperature range of 200°C to 400°C, the alkaline components dispersed on the catalyst surface gradually sinter and aggregate. As a result, they lose their effect as co-catalysts, and the catalytic performance deteriorates. Since thermal sintering is an irreversible phenomenon, the catalyst cannot be regenerated by lowering the temperature or temporarily stopping the reaction. Conventionally, in order to regenerate a catalyst, it was necessary to remove the catalyst from the reactor and add alkaline components again.

[0026] The alkali supply unit 30 supplies an aqueous solution containing alkaline components to the catalyst. For example, if the reactor 10 is a tubular reactor, as shown in Figure 1, an aqueous solution containing alkaline components can be supplied into the reactor 10 from the alkali supply unit 30 installed at the top of the reactor 10. Then, within the reactor 10, the effect of the co-catalyst can be regenerated by adding alkaline components to the surface of the catalyst, which has reduced catalytic performance due to the aggregation of alkaline components. In this way, the hydrocarbon production system 1 makes it possible to regenerate the catalyst without removing it from the reactor 10, while the catalyst is still filled inside the reactor 10.

[0027] The method of supplying the aqueous solution containing the alkaline component from the alkali supply unit 30 to the catalyst in the reactor 10 is not particularly limited, and methods such as spray atomization, droplet application, continuous addition, or discontinuous addition may be used. Furthermore, the aqueous solution containing the alkaline component may be supplied directly to the catalyst surface in the reactor 10, or to any other location. In addition, the location of the alkali supply unit 30 is not particularly limited as long as it can supply the aqueous solution containing the alkaline component to the catalyst in the reactor 10, and may be installed on top of the reactor 10, or installed side by side of the reactor 10.

[0028] Furthermore, the step of supplying an aqueous solution containing an alkaline component from the alkali supply unit 30 to the catalyst in the reactor 10, i.e., the alkali supply step described later, may be performed with the reaction in the reactor 10 temporarily stopped, or it may be performed while the reaction is in progress. Thus, in the hydrocarbon production system 1, it is possible to regenerate the catalyst while suppressing a decrease in hydrocarbon production efficiency.

[0029] The hydrocarbon production system 1 may include a gas-liquid separation tank 20. The product generated in the reactor 10 is supplied to the gas-liquid separation tank 20 as a gas or liquid under pressurized conditions, similar to the reactor 10. The gas supplied from the reactor 10 to the gas-liquid separation tank 20 may also contain at least one of unreacted carbon dioxide and carbon monoxide.

[0030] The gas-liquid separation tank 20 separates the product generated in the reactor 10 into a gas containing hydrocarbons and a liquid containing hydrocarbons and water. Because the gas-liquid separation tank 20 is under pressurized conditions, some of the hydrocarbons are in a gaseous state, and some of the hydrocarbons are dissolved in water and contained in the liquid.

[0031] The temperature conditions in the gas-liquid separation tank 20 are not particularly limited, but for example, 20°C to 30°C is preferred. Similarly, the pressure conditions in the gas-liquid separation tank 20 are not particularly limited, but for example, it is preferred to be the same as the pressure conditions in the reactor 10.

[0032] A cooler (not shown) may be provided in the flow path connecting the reactor 10 and the gas-liquid separation tank 20. That is, the reactor 10 may be equipped with a cooler to cool the product produced therein, and the gas-liquid separation tank 20 may separate the product cooled by the cooler into gas and liquid. By providing a cooler, the product produced in the reactor 10 can be quickly cooled and supplied to the gas-liquid separation tank 20, thereby improving the efficiency of the manufacturing process.

[0033] As described above, the hydrocarbon production system 1 according to this embodiment is a hydrocarbon production system that produces a product containing hydrocarbons from raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen. The hydrocarbon production system 1 includes a reactor 10 that produces hydrocarbons from raw materials and contains a catalyst containing at least one of iron and cobalt, and an alkali supply unit 30 that supplies an aqueous solution containing an alkaline component to the catalyst. Therefore, the hydrocarbon production system 1 can provide a hydrocarbon production system that enables catalyst regeneration while suppressing a decrease in hydrocarbon production efficiency.

[0034] Next, a hydrocarbon production method using hydrocarbon production system 1 will be described. The hydrocarbon production method is a hydrocarbon production method that produces hydrocarbons from raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen.

[0035] The hydrocarbon production method includes a hydrocarbon production step in which hydrocarbons are produced from raw materials containing carbon dioxide and carbon monoxide, as well as hydrogen, using a catalyst containing at least one of iron and cobalt. As described above, when the raw materials contain carbon dioxide, the two-step reactions of reaction equations (1) and (2) proceed, and when the raw materials contain carbon monoxide, the reaction of reaction equation (2) proceeds. In the hydrocarbon production step, hydrocarbons and water are produced in reactor 10 by the reaction of at least one of carbon dioxide and carbon monoxide with hydrogen.

[0036] The hydrocarbon production method includes an alkali supply step in which an aqueous solution containing an alkaline component is supplied to the catalyst. As described above, by adding an alkaline component as a co-catalyst to a catalyst containing at least one of iron and cobalt, the reactions of reaction equations (1) and (2) above are promoted. However, in the reaction conditions of a temperature range of 200°C to 400°C, the alkaline component dispersed on the catalyst surface gradually sintersects and aggregates. As a result, it loses its effect as a co-catalyst, and the catalytic performance deteriorates. By performing the alkali supply step, an aqueous solution containing an alkaline component can be supplied from the alkali supply unit 30 to the catalyst in the reactor 10. Then, in the reactor 10, by adding the alkaline component to the surface of the catalyst whose catalytic performance has deteriorated due to the aggregation of the alkaline component, the effect of the co-catalyst can be restored.

[0037] In the alkali supply step, the catalyst can be regenerated while it remains filled in the reactor 10 by supplying an aqueous solution containing alkaline components to the catalyst from the alkali supply unit 30 without removing the catalyst from the reactor 10. Furthermore, the alkali supply step may be performed either while the reaction in the reactor 10 is temporarily stopped or while the reaction is in progress. Thus, the hydrocarbon production method makes it possible to regenerate the catalyst while suppressing a decrease in hydrocarbon production efficiency.

[0038] Thus, the hydrocarbon production method is a hydrocarbon production method that produces hydrocarbons from raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen. The hydrocarbon production method includes a hydrocarbon production step in which hydrocarbons are produced from raw materials using a catalyst containing at least one of iron and cobalt, and an alkali supply step in which an aqueous solution containing an alkaline component is supplied to the catalyst. Therefore, the hydrocarbon production method can provide a hydrocarbon production method that enables the regeneration of the catalyst while suppressing a decrease in hydrocarbon production efficiency.

[0039] [Second Embodiment] Next, the hydrocarbon production system 1a according to the second embodiment will be described using Figure 2. In the description of the second embodiment, parts that are the same as those in the first embodiment will be omitted or simplified.

[0040] The hydrocarbon production system 1a of the second embodiment corresponds to the hydrocarbon production system 1 of the first embodiment. The reactors 10a, 10b, and 10c of the second embodiment correspond to the reactor 10 of the first embodiment. The alkali supply units 30a, 30b, and 30c of the second embodiment correspond to the alkali supply unit 30 of the first embodiment. Furthermore, the gas-liquid separation tanks 20a, 20b, and 20c of the second embodiment correspond to the gas-liquid separation tank 20 of the first embodiment.

[0041] As shown in Figure 2, the hydrocarbon production system 1a includes reactors 10a, 10b, 10c, gas-liquid separation tanks 20a, 20b, 20c, and alkali supply units 30a, 30b, 30c, and may also include multiple hydrocarbon production devices 40a, 40b, 40c connected in series. As shown by the dotted lines in Figure 2, the hydrocarbon production devices 40a, 40b, 40c are composed of reactors 10a, 10b, 10c, gas-liquid separation tanks 20a, 20b, 20c, and alkali supply units 30a, 30b, 30c. The number of stages of hydrocarbon production devices in the hydrocarbon production system is determined by using one hydrocarbon production device as a unit. Therefore, the hydrocarbon production system 1a in Figure 2 has three stages of hydrocarbon production devices 40a, 40b, 40c. The number of stages of hydrocarbon production devices is not particularly limited and may be two stages, four stages or more.

[0042] Reactors 10a, 10b, and 10c contain a catalyst containing at least one of iron and cobalt, and produce hydrocarbon products from raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen. Furthermore, in reactors 10a, 10b, and 10c, the reactions of reaction equations (1) and (2) can be accelerated by adding an alkaline component as a co-catalyst to the catalyst containing at least one of iron and cobalt.

[0043] First, reactor 10a is supplied with raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen, and the reaction proceeds in reactor 10a to produce hydrocarbons and water. The gas-liquid separation tank 20a separates the products generated in reactor 10a into a gas containing hydrocarbons and a liquid containing hydrocarbons and water. The hydrocarbon-containing gas separated in gas-liquid separation tank 20a also contains unreacted raw materials containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen. Therefore, by sending the hydrocarbon-containing gas separated in gas-liquid separation tank 20a to reactor 10b, the reaction can proceed in reactor 10b to produce hydrocarbons and water.

[0044] The gas-liquid separation tank 20b separates the product generated in reactor 10b into a hydrocarbon-containing gas and a liquid containing hydrocarbons and water. The hydrocarbon-containing gas separated in gas-liquid separation tank 20b also contains raw materials including unreacted carbon dioxide and carbon monoxide, as well as hydrogen. Therefore, when the hydrocarbon-containing gas separated in gas-liquid separation tank 20b is sent to reactor 10c, the reaction can proceed in reactor 10c to produce hydrocarbons and water. Then, the gas-liquid separation tank 20c separates the product generated in reactor 10c into a hydrocarbon-containing gas and a liquid containing hydrocarbons and water.

[0045] On the other hand, alkali supply units 30a, 30b, and 30c can supply aqueous solutions containing alkaline components to the catalysts in reactors 10a, 10b, and 10c, respectively. Then, within reactors 10a, 10b, and 10c, the effect of the co-catalyst can be regenerated by adding alkaline components to the surface of the catalyst whose catalytic performance has deteriorated due to the aggregation of alkaline components. In this way, the hydrocarbon production system 1a makes it possible to regenerate the catalyst while it is still filled in reactors 10a, 10b, and 10c, without removing the catalyst from the reactors 10a, 10b, and 10c.

[0046] In hydrocarbon production system 1a, the reaction is carried out with the reactor divided. Therefore, when an aqueous solution containing alkaline components is supplied from alkali supply units 30a, 30b, and 30c to the catalyst in reactors 10a, 10b, and 10c, the alkaline components are more easily dispersed on the catalyst surface. Furthermore, depending on the degree of catalyst degradation in reactors 10a, 10b, and 10c, it becomes possible to individually adjust the amount, frequency, and duration of addition of the aqueous solution containing alkaline components in alkali supply units 30a, 30b, and 30c, thereby improving controllability.

[0047] Furthermore, in the hydrocarbon production system 1a, the hydrocarbon-containing gas is generated in three stages in reactors 10a, 10b, and 10c, and then separated and recovered in three stages in gas-liquid separation tanks 20a, 20b, and 20c, thereby improving the hydrocarbon yield. In this way, by applying this to a process equipped with multiple stages of reactors, it is possible to construct a hydrocarbon production system that reduces unreacted carbon dioxide and carbon monoxide, as well as hydrogen-containing raw materials, and improves the hydrocarbon yield.

[0048] As described above, the hydrocarbon production system 1a according to this embodiment may include reactors 10a, 10b, 10c, gas-liquid separation tanks 20a, 20b, 20c, and alkali supply units 30a, 30b, 30c. Furthermore, the hydrocarbon production system 1a may include a plurality of hydrocarbon production devices 40a, 40b, 40c connected in series. Therefore, the hydrocarbon production system 1a can provide a hydrocarbon production system that enables catalyst regeneration while suppressing a decrease in hydrocarbon production efficiency.

[0049] The hydrocarbon production system includes multiple reactors 10, multiple alkali supply units 30, and a gas-liquid separation tank 20, and each of the multiple reactors 10 and multiple alkali supply units 30 may be connected in parallel. Specifically, a raw material containing at least one of carbon dioxide and carbon monoxide, as well as hydrogen, is supplied to each of the multiple reactors 10 arranged in parallel, and the reaction proceeds in the multiple reactors 10 to produce hydrocarbons and water. The products produced in the multiple reactors 10 are then separated into a gas containing hydrocarbons and a liquid containing hydrocarbons and water in the gas-liquid separation tank 20. On the other hand, by connecting the multiple alkali supply units 30 to each of the multiple reactors 10, an aqueous solution containing alkaline components can be individually supplied to the catalysts in each of the multiple reactors 10. In such a hydrocarbon production system, it is possible to individually adjust the amount, frequency, and duration of addition of the aqueous solution containing alkaline components in the multiple alkali supply units 30 according to the degree of catalyst degradation in the multiple reactors 10, thereby improving controllability.

[0050] Although several embodiments have been described, it is possible to modify or transform the embodiments based on the above disclosure. All components of the above embodiments, and all features described in the claims, may be taken individually and combined, provided that they do not conflict with each other.

[0051] This disclosure can contribute, for example, to United Nations Sustainable Development Goal (SDG) 7, "Ensure access to affordable, reliable, sustainable, and modern energy for all," and Goal 13, "Take urgent action to combat climate change and its impacts." [Explanation of Symbols]

[0052] 1,1a Hydrocarbon production system 10, 10a, 10b, 10c reactors 20, 20a, 20b, 20c Gas-liquid separation tanks 30, 30a, 30b, 30c Alkali supply unit 40a, 40b, 40c Hydrocarbon Production Equipment

Claims

1. A hydrocarbon production system that produces a hydrocarbon-containing product from raw materials containing carbon dioxide and carbon monoxide and hydrogen, A reactor comprising a catalyst containing at least one of iron and cobalt, which produces hydrocarbons from the raw materials, An alkali supply unit that supplies an aqueous solution containing an alkaline component to the catalyst, A hydrocarbon production system equipped with [the following features].

2. The hydrocarbon production system according to claim 1, wherein the alkaline component comprises at least one of an alkali metal hydroxide and an alkali metal carbonate.

3. The apparatus comprises a plurality of hydrocarbon production devices connected in series, including the reactor, gas-liquid separation tank, and alkali supply unit. The hydrocarbon production system according to claim 1 or 2, wherein the gas-liquid separation tank separates the product generated in the reactor into a gas containing hydrocarbons and a liquid containing hydrocarbons and water.

4. A method for producing hydrocarbons from raw materials containing at least one of carbon dioxide and carbon monoxide, and hydrogen, A hydrocarbon production step in which hydrocarbons are produced from the raw materials using a catalyst containing at least one of iron and cobalt, An alkali supply step of supplying an aqueous solution containing an alkaline component to the catalyst, A method for producing hydrocarbons containing [a specific type of hydrocarbon].

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