JP6552030B1 - Syngas production system for low carbon FT synthetic oil production - Google Patents

Abstract

In a syngas production system for producing low carbon FT synthetic oil, carbon monoxide rich fuel gas and hydrogen capable of providing hydrogen are used as two types of fuel gas, and carbon monoxide is separated from the two types of fuel gas. Hydrogen is secured, and a blending device for synthesizing the separated carbon monoxide and the secured hydrogen so that a molar ratio of hydrogen to carbon monoxide becomes a target value is provided, and the two types Is set based on the target value and the ratio of carbon monoxide and hydrogen contained in the fuel gas capable of providing carbon monoxide rich fuel gas and hydrogen, and the target value. To do.

Description

  The present invention relates to a system for producing synthesis gas suitable for producing low carbon FT synthetic oil.

The global warming problem is becoming more serious, and there is a strong demand for reduction of carbon dioxide emissions, and there is also a movement to limit the use of petroleum-based fuels in automobiles, airplanes and the like. From such a background, there is a need for biomass-based liquid fuel conversion (BTL: Biomass To Liquid). Since BTL needs to react hydrogen and carbon monoxide at an appropriate ratio, there is a need for a method for easily generating synthesis gas whose hydrogen to carbon monoxide molar ratio (H ₂ / CO) is a target value. Yes.
In Patent Document 1, saccharified biomass is produced to produce a saccharified solution, and this saccharified solution is subjected to methane fermentation treatment to produce methane fermentation biogas. From this methane fermentation biogas, a steam reforming method, a partial oxidation method, etc. It has been described that the synthesis gas containing hydrogen and carbon monoxide as the main components is produced using this, and this synthesis gas is subjected to FT synthesis processing to produce an FT synthetic oil.
Patent Document 2 discloses a pyrolysis furnace that generates pyrolysis gas from biomass raw material, a gas separator that selectively separates H ₂ gas and CO gas from pyrolysis gas, and the H ₂ gas and CO gas, respectively. A storage tank for storing separately, a valve and a control device for keeping each gas at a constant flow ratio, and a liquid oil production device for synthesizing liquid hydrocarbons having a catalytic reactor for polymerizing the gas are described.
Patent Document 3 discloses a hydrogen separation step in which a mixed gas containing hydrogen and carbon monoxide is brought into contact with a hydrogen separation membrane to separate the hydrogen, and an off-gas after being brought into contact with the hydrogen separation membrane is treated as a carbon monoxide separation membrane. And a carbon monoxide separation step for separating the carbon monoxide in contact with the gas.
Patent Document 4 discloses a thermal decomposition apparatus that thermally decomposes biomass raw material into biomass gas, a purification apparatus that purifies biomass gas, and carbonization that uses the purified biomass gas as hydrocarbon oil in the presence of a hydrocarbon synthesis catalyst. In a BTL production system composed of a hydrogen synthesizer, a hydrogen supply system for metering and adding hydrogen gas between a refining device and a hydrocarbon synthesizer, and a molar ratio of carbon and hydrogen to a predetermined value And an adjustment device for adjusting and mixing biomass gas and hydrogen.
In Patent Document 5, gasified combustible gas generated by gasifying waste and biomass is unstable in the arrival of raw materials. It is described that they are mixed and used as fuel gas for boilers and heating furnaces.

WO 2015/174518 JP, 2010-248459, A Japanese Patent Application Laid-Open No. 2017-20259 WO 2010/119972 JP, 2011-6575, A

In the method described in Patent Document 1, synthesis gas mainly composed of hydrogen and carbon monoxide is generated from methane fermentation biogas using a steam reforming method, a partial oxidation method, or the like. No mention is made of controlling the molar ratio of hydrogen to carbon monoxide to the target value.
Usually, the molar ratio to carbon monoxide of hydrogen supplied to the liquid oil production apparatus is about 2. In the apparatus described in Patent Document 2, hydrogen and carbon monoxide are separately selectively separated from biomass gas generated by pyrolyzing biomass, and the hydrogen and carbon monoxide are supplied at a constant flow rate corresponding to a molar ratio of about 2. Since liquid hydrocarbons are synthesized by polymerization reaction at a ratio, hydrogen separated from the carbon monoxide-rich pyrolysis gas produced from biomass is insufficient, and it is difficult to effectively use biomass gas.
In the gas separation method described in Patent Document 3, three or more gases are mixed, hydrogen is separated from the mixed gas mixture, and carbon monoxide is separated from off-gas after the hydrogen is separated. Document 3 does not mention a technique for mixing a hydrogen-rich fuel gas and a carbon monoxide-rich fuel gas at a set ratio so that the ratio of separated hydrogen and carbon monoxide becomes a target value.
The adjusting device for mixing and adjusting the biomass gas and hydrogen described in Patent Document 4 mixes hydrogen with the biomass gas so that the molar ratio of carbon and hydrogen becomes a predetermined value. A technique for separating carbon monoxide from biomass gas and appropriately blending hydrogen into the separated carbon monoxide is not shown.
Patent Document 5 shows that gasified combustible gas generated by gasifying waste and biomass is mixed with by-product combustible gas generated at a steelworks and used as fuel gas for a boiler or a heating furnace. However, it does not refer to the production of a synthesis gas in which the molar ratio of hydrogen to carbon monoxide from the carbon monoxide rich fuel gas and the hydrogen rich fuel gas becomes a target value.

  The present invention reduces carbon dioxide emission from a fuel gas rich in carbon monoxide and a fuel gas capable of providing hydrogen, and uses both fuel gases without waste, so that the molar ratio of hydrogen to carbon monoxide is reduced. An object of the present invention is to provide a synthesis gas production system for low carbon FT synthetic oil production which can easily and efficiently produce synthesis gas which is a target value.

(1. Syngas production system for first low carbon FT synthetic oil production)
  The first synthesis gas production system for low carbon FT synthetic oil production comprises a CO-rich gasification gas supply device for supplying a gasification gas containing at least a biomass-derived gasification gas and a hydrogen-rich by-product gas. Supply H ₂ Rich by-product gas supply device and the H ₂ A hydrogen separation apparatus connected to a rich byproduct gas supply apparatus for separating the hydrogen-rich byproduct gas into hydrogen and a third off gas, and a gasification containing at least the biomass-derived gasification gas from the CO-rich gasification gas supply apparatus A mixing device for supplying a gas, supplying the third off gas from the hydrogen separation device, and mixing the gasification gas containing at least the biomass-derived gasification gas and the third off gas into a second mixed gas; The second mixed gas is supplied from the mixing device, a carbon monoxide separation device that separates the second mixed gas into carbon monoxide and a fourth off gas, and the hydrogen separated from the hydrogen separation device are supplied. The separated carbon monoxide is supplied from the carbon monoxide separator, and the separated carbon monoxide and the separated hydrogen to carbon monoxide are supplied. And a blending device for blending the synthesis gas so that the molar ratio of the elements reaches a target value into synthesis gas, the gas containing at least the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device to the mixing device Gas and the above H ₂ The volume ratio with the hydrogen-rich by-product gas supplied from the rich by-product gas supply apparatus to the hydrogen separator in a standard state is determined by using the gasification gas containing at least the biomass-derived gasification gas and the hydrogen-rich byproduct The ratio is set based on the ratio of carbon monoxide contained in the raw gas, the ratio of hydrogen contained in the hydrogen-rich by-product gas, and the target value.
(2. Syngas production system for second low-carbon FT synthetic oil production)
  The second synthesis gas production system for low carbon FT synthetic oil production comprises a CO rich gasification gas supply device for supplying a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide, and a hydrogen-rich by-product gas Supply H ₂ A rich by-product gas supply device; a carbon monoxide separation device connected to the CO-rich gasification gas supply device for separating the gasification gas containing at least the biomass-derived gasification gas into carbon monoxide and a fifth off gas; H ₂ The hydrogen-rich by-product gas is supplied from the rich by-product gas supply device, the fifth off-gas is supplied from the carbon monoxide separator, and the hydrogen-rich by-product gas is mixed with the fifth off-gas. A mixing device as a third mixed gas;
  The third mixed gas is supplied from the mixing device, a hydrogen separation device for separating the third mixed gas into hydrogen and a sixth off gas, and the hydrogen separated from the hydrogen separation device is supplied, and the monooxidation is performed. The separated carbon monoxide is supplied from the carbon separation apparatus, and the separated carbon monoxide and the separated hydrogen are mixed so that the molar ratio of hydrogen to carbon monoxide becomes a target value, and synthesis gas is obtained. And a gasification gas containing at least the biomass-derived gasification gas supplied from the CO rich gasification gas supply device to the carbon monoxide separation device. ₂ The volume ratio in a standard state with the hydrogen-rich by-product gas supplied from the rich by-product gas supply device to the mixing device is the amount of carbon monoxide contained in the gasification gas including at least the biomass-derived gasification gas. It is set based on the ratio, the ratio of hydrogen contained in the gasification gas containing at least the biomass-derived gasification gas and the hydrogen-rich byproduct gas, and the target value.
(3. Syngas production system for third low-carbon FT synthetic oil production)
  The third synthesis gas production system for low carbon FT synthetic oil production comprises a CO rich gasification gas supply device for supplying a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide, and a steam supply device for supplying water vapor And a distribution device for distributing the gasification gas containing at least the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device to one portion and the other portion at a predetermined ratio, and the at least biomass-derived gas from the distribution device A carbon monoxide separator for supplying one part of a gasification gas containing a gasification gas and separating one part of the gasification gas containing at least a biomass-derived gasification gas into carbon monoxide and an eighth off gas; The other of the gasification gas to which the water vapor is supplied from a supply device and includes the at least biomass-derived gasification gas A carbon monoxide conversion device, which is supplied from the distribution device and causes a shift reaction between the water vapor and the other portion of the gasification gas containing at least the biomass-derived gasification gas, to generate a hydrogen-rich shift gas containing gas; The gas containing the shift gas is supplied from the carbon monoxide shift converter, the eighth off gas is supplied from the carbon monoxide separator, and the gas containing the shift gas is mixed with the eighth off gas to form a fourth mixed gas A hydrogen separation device connected to the mixing device for separating the fourth mixed gas into hydrogen and a tenth off gas; hydrogen separated from the hydrogen separation device; The separated carbon monoxide is supplied from a separator, and the molar ratio of hydrogen to carbon monoxide is set to a target value between the separated carbon monoxide and the separated hydrogen. Gasification gas containing at least the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device to the distribution device, and the water vapor supply device. In the standard state, the volume ratio with the water vapor supplied to the carbon monoxide shift converter, the ratio of carbon monoxide and the ratio of hydrogen contained in the gasification gas containing at least the biomass-derived gasification gas, and the target Set based on the value.

The first to third synthesis gas production systems for producing low-carbon FT synthetic oil are prepared in a standard state of a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide and a hydrogen-rich by-product gas or water vapor . Since the volume ratio is set based on the ratio of carbon monoxide and hydrogen contained in the carbon monoxide- rich gas and the hydrogen-rich byproduct gas or the water vapor, and the target value, the monoxide The gasification gas containing at least the biomass-derived gasification gas which is rich in carbon and the hydrogen-rich by-product gas or the water vapor can be maintained at appropriate amounts. As a result, the amount of the gasification gas containing at least the biomass-derived gasification gas rich in carbon monoxide and the hydrogen-rich by-product gas or the steam increases more than necessary, and the system itself, particularly the carbon monoxide separation device It is possible to prevent the installation cost and the running cost from increasing. Furthermore, a synthesis gas for producing a low carbon FT synthetic oil can be produced without waste using the gasification gas containing at least the biomass-derived gasification gas rich in carbon monoxide and the hydrogen-rich byproduct gas or the water vapor. it can. Further, since a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide is used , carbon dioxide gas emission can be reduced to produce a synthesis gas for low carbon FT synthetic oil production.

It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on a 1st reference example . BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on 1st Embodiment. It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on 2nd Embodiment. It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on a 2nd reference example . It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on a 3rd reference example . It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on 3rd Embodiment. It is a block diagram which shows the whole structure of the synthesis gas manufacturing system for low carbon FT synthetic oil manufacture which concerns on a 4th reference example .

1. Low carbon FT synthetic oil producing synthesis gas production system 1 according to the first reference example configuration of the first reference example, as shown in FIG. 1, a CO-rich reduction gas supply device 10, H ₂ rich product gas It comprises the supply device 20, the mixing device 30, the hydrogen separation device 40, the carbon monoxide separation device 50, and the preparation device 60.

A known FT synthetic oil production apparatus 2 is connected to the preparation apparatus 60 which is the final stage of the synthesis gas production system 1 for low carbon FT synthetic oil production. The FT synthetic oil production apparatus 2 uses a known Fischer-Tropsch process (FT method) from a synthesis gas whose target is a molar ratio of hydrogen to carbon monoxide supplied, and performs a desired reaction in a catalytic reaction. FT synthetic oil (liquid hydrocarbon) is produced. The FT synthetic oil production apparatus 2 is known, and a synthetic gas whose composition (H ₂ / CO molar ratio) is adjusted is introduced into a reactor filled with various catalysts, and the synthesis reaction shown in the chemical formula (1) is performed. It produces FT synthetic oil (liquid hydrocarbon).
(2n + 1) H ₂ + nCO → CnH _{2n + 2} + nH ₂ O (1)
From formula (1), it is necessary to react hydrogen (H ₂ ) and carbon monoxide (CO) at an appropriate ratio. In the blending device 60, the molar ratio of hydrogen to carbon monoxide is obtained from formula (1). The target value is adjusted. In the production of FT synthetic oil, since n in the chemical formula (1) is 5 to 20, the target value is approximately 2.

The CO-rich gasification gas supply device 10 includes a gasification furnace that generates a gasification gas and a purification device that purifies the generated gasification gas. The gasification furnace produces 100% biomass-derived gasification gas when supplied with biomass such as thinned wood, waste wood, rice straw, wheat straw, rice husk, corn, etc., preferably woody biomass. To do. The biomass-derived gasification gas is a carbon monoxide rich gas, and an example of the composition is shown by volume%: carbon monoxide (CO) 48%, hydrogen (H ₂ ) 16%, methane (CH ₄ ) 16%, It is 13% of carbon dioxide gas (CO ₂ ) and 7% of hydrocarbon (CmHn).
The gasifier, when supplied with a mixture of biomass and coal as a mixed fuel, generates a gasified gas derived from the mixed fuel in which the biomass-derived gasified gas and the coal-derived gasified gas are mixed. Furthermore, when a gasification furnace is supplied with a mixture of biomass and waste plastic (not including vinyl chloride) as a mixed fuel, it is derived from a mixed fuel that is a mixture of biomass-derived gasification gas and waste plastic-derived gasification gas. Generate gasification gas. Thus, the gasification furnace contains at least biomass-derived gasification gas rich in carbon monoxide, which contains at least biomass-derived gasification gas and has a high carbon monoxide content (ratio), depending on the fuel supplied. Generate gasification gas. Then, the CO-rich gasification gas supply device 10 is connected to the mixing device 30, and purifies the gasification gas containing at least the biomass-derived gasification gas generated in the gasification furnace with the purification device and supplies the purified gasification gas to the mixing device 30.
When gasification gas containing at least biomass-derived gasification gas is generated in the gasification furnace and gasification gas containing at least biomass-derived gasification gas purified by the purification equipment is stored in the gas holder, CO rich gasification The gas supply device 10 may be a gas holder that stores a carbonization rich gasification gas including at least a biomass-derived gasification gas and supplies the gasification gas to the mixing device 30.

The H ₂ rich by-product gas supply device 20 is connected to the mixing device 30 and supplies the mixing device 30 with a hydrogen-rich by-product gas consisting of at least one of the coke oven gas and the refinery gas. The by-product gas rich in hydrogen is a gas that has a high hydrogen content (ratio) and can provide hydrogen. The coke oven gas is a hydrogen-rich dry distillation gas generated with coke production. Refinery gas is a hydrogen-rich off-gas generated in the crude oil refining process. One example of the composition of coke oven gas, which is one of hydrogen-rich by-product gases, is shown by volume%: 7% carbon monoxide (CO), 56% hydrogen (H ₂ ), 27% methane (CH ₄ ), It is 7% of carbon dioxide gas (CO2) and 3% of hydrocarbon (CmHn). When hydrogen-rich byproduct gas comprising at least one of coke oven gas and refinery gas is stored in the gas holder, the H ₂ rich byproduct gas supply device 20 stores the hydrogen-rich byproduct gas. The gas holder may be supplied to the mixing device 30.

The mixing device 30 is supplied with a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide from the CO-rich gasification gas supply device 10 and also with a hydrogen-rich byproduct from the H ₂ rich byproduct gas supply device 20. Gas is supplied, and a gasification gas containing at least a biomass-derived gasification gas and a hydrogen-rich byproduct gas are mixed to generate a mixed gas (first mixed gas). As described above, the mixing device 30 includes two kinds of gasification gas (carbon monoxide rich fuel gas) containing at least biomass-derived gasification gas and hydrogen-rich byproduct gas (fuel gas capable of providing hydrogen). Fuel gas is supplied.

  Since the synthesis gas produced by the synthesis gas production system 1 for producing low-carbon FT synthetic oil is a gas in which the molar ratio of hydrogen to carbon monoxide is approximately 2 as the target value, the mixing device 30 is at least biomass-derived gasification The ratio of the volume of carbon monoxide contained in the gasification gas containing the gas and the hydrogen-rich by-product gas in the standard state with the gasification gas containing the gas and the hydrogen-rich by-product gas at least. And it mixes so that it may become the value set based on the ratio and target value of hydrogen. Since the gasification gas containing at least the biomass-derived gasification gas is rich in carbon monoxide, the by-product gas rich in hydrogen is mixed in order to supplement hydrogen in the production of the hydrogen-rich synthesis gas.

For example, assuming that the biomass-derived gasification gas and the hydrogen-rich by-product gas of the above composition are two types of fuel gas, the proportion of carbon monoxide contained in the biomass-derived gasification gas in a standard state is 48%, The proportion is 16%, the proportion of carbon monoxide contained in the hydrogen-rich byproduct gas is 7%, and the proportion of hydrogen is 56%. Therefore, when biomass-derived gasification gas and hydrogen-rich by-product gas are mixed at a volume ratio (1: x), the ratio of carbon monoxide contained in the mixed gas is 0.48 + 0.07x, and the ratio of hydrogen is 0.16 + 0.56x. From the equation (2), the volume of the hydrogen-rich by-product gas for setting the volume ratio of hydrogen to carbon monoxide contained in the mixed gas to a target value, for example, 2
(0.16 + 0.56x) / (0.48 + 0.07x) = 2 (2)
x = 80 / 42≈2.
Therefore, for example, the amount of hydrogen-rich byproduct gas supplied from the H ₂ rich byproduct gas supply device 20 to the mixing device 30 is converted into biomass-derived gasification supplied from the CO rich gasification gas supply device 10 to the mixing device 30. When the amount of gas is doubled and mixed in the mixing device 30, the biomass-derived gasification gas and the hydrogen-rich by-product gas can be used without waste.
In the above example, the volume ratio of biomass-derived gasification gas and hydrogen-rich by-product gas in the standard state is the ratio of carbon monoxide contained in the biomass-derived gasification gas and hydrogen-rich by-product gas (48% And 7%), the proportions of hydrogen (16% and 56%), and the target value (2).
As a result, the mixed gas in which the hydrogen-rich by-product gas is mixed with the gasification gas containing at least the biomass-derived gasification gas rich in carbon monoxide has a high hydrogen content, and a low carbon FT synthetic oil is produced. The yield of synthesis gas production suitable for

  The hydrogen separation device 40 is connected to the mixing device 30, and separates the supplied first mixed gas into hydrogen and a first off gas. The hydrogen separator 40 may use a known pressure swing adsorption (PSA), a hydrogen separation polymer membrane, a hydrogen separation metal membrane, a cryogenic separation method, or the like.

  The carbon monoxide separator 50 is connected to the hydrogen separator 40 and separates the supplied first off gas into carbon monoxide and a second off gas. The carbon monoxide separator 30 may use a known pressure fluctuation adsorption method (PSA), a carbon monoxide separation polymer membrane, a carbon monoxide separation metal membrane, a cryogenic separation method, or the like.

  The blending device 60 is connected to the hydrogen separation device 40 and the carbon monoxide separation device 50, and the capacity of the hydrogen supplied from the hydrogen separation device 40 and the capacity of the carbon monoxide supplied from the carbon monoxide separation device 50 are the same. Each is measured at the same pressure, and blended so that the hydrogen capacity relative to the carbon monoxide capacity becomes a target value. Thus, the hydrogen separated by the hydrogen separator 40 and the carbon monoxide separated by the carbon monoxide separator 50 are mixed so that the molar ratio of hydrogen to carbon monoxide becomes a target value to become a synthesis gas. .

  The off gas utilization device 3 is connected to the carbon monoxide separation device 50, and the second off gas supplied from the carbon monoxide gas separation device 50 is used as a fuel. The off-gas utilization device 3 is a boiler combustion furnace or the like.

2. Operation of First Reference Example The CO-rich gasification gas supply device 10 supplies a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide to the mixing device 30, and the H ₂ -rich byproduct gas supply device 20 The hydrogen rich by-product gas is supplied to the mixing device 30. The mixing device 30 mixes a gasification gas containing at least a biomass-derived gasification gas and a hydrogen-rich by-product gas to generate a first mixed gas, and supplies the first mixed gas to the hydrogen separation device 40. The hydrogen separation device 40 separates the supplied first mixed gas into hydrogen and a first off gas, and supplies the first off gas to the carbon monoxide separation device 50 and hydrogen to the blending device 60. The carbon monoxide separator 50 separates the supplied first off gas into carbon monoxide and a second off gas, and supplies carbon monoxide to the preparation device 60. The blending device 60 blends the supplied hydrogen and carbon monoxide so that the molar ratio of hydrogen to carbon monoxide is a target value, thereby producing a synthesis gas suitable for the production of low-carbon FT synthetic oil.

  The FT synthetic oil production apparatus 2 produces an FT synthetic oil from the synthesis gas supplied from the synthesis gas production system 1 for low carbon FT synthetic oil production. The off gas utilization device 3 burns the supplied second off gas and uses the combustion heat. Thereby, two types of fuel gas can be used effectively.

3. According to a low-carbon FT synthetic oil producing synthesis gas production system 1 according to the effect the first reference example of the first reference example includes two carbon monoxide-rich least from biomass gasification gas is fuel gas The volume ratio under normal conditions of the gasification gas and the hydrogen-rich by-product gas, the ratio of carbon monoxide and hydrogen contained in the two fuel gases, and the ratio of hydrogen to carbon monoxide in the synthesis gas to be produced Since it is set as the value set based on the target value of the molar ratio, the two types of fuel gas can be used without waste. Furthermore, the amount of the two types of fuel gas does not increase more than necessary, and the system itself, in particular, the hydrogen separator and the carbon monoxide separator can be prevented from increasing in size and installation costs and running costs. . In addition, since the production of gasification gas including at least biomass-derived gasification gas has a small amount of carbon dioxide emission, carbon dioxide emission can be reduced and a synthesis gas for producing low carbon FT synthetic oil can be produced.

4. Embodiment Configuration first of the first embodiment, as shown in FIG. 2, the hydrogen separator 40 is connected between the mixing device 30 with H ₂ rich product gas supply apparatus 20, the mixing device 30 is A point directly connected to the carbon monoxide separation device 50 and a gasification gas containing at least a biomass-derived gasification gas supplied from the CO-rich gasification gas supply device 10 to the mixing device 30 and a H ₂ rich byproduct gas supply device 20 The volume ratio in a standard state with the hydrogen-rich byproduct gas supplied to the hydrogen separator 40 from the above, the gasification gas containing at least the biomass-derived gasification gas and the monoxide contained in the hydrogen-rich byproduct gas The point set based on the ratio of carbon, the ratio of hydrogen contained in the hydrogen-rich by-product gas, and the target value is different from the first reference example . Accordingly, the same components as those in the first reference example are denoted by the same reference numerals and description thereof is omitted.

The H ₂ rich byproduct gas supply device 20 is connected to the hydrogen separation device 40 and supplies the hydrogen rich byproduct gas to the hydrogen separation device 40. The hydrogen separation device 40 is connected to the preparation device 60 and supplies the separated hydrogen to the preparation device 60 and supplies the third off gas to the mixing device 30. The CO-rich gasification gas supply device 10 is connected to the mixing device 30, and supplies the mixing device 30 with a carbonization gas rich gas containing at least a biomass-derived gasification gas. The mixing device 30 mixes the gasification gas containing at least the biomass-derived gasification gas and the third off gas into a second mixed gas, which is supplied to the carbon monoxide separation device 50.

The second mixed gas contains at least hydrogen contained in the gasification gas containing biomass-derived gasification gas, and the hydrogen contained in the second mixed gas is contained in the fourth off gas from the carbon monoxide separation device 50 and is an off gas It is delivered to the utilization device 3 and is not supplied to the blending device 60. Therefore, at least the gasification gas containing biomass-derived gasification gas and carbon monoxide contained in the hydrogen-rich by-product gas are supplied to the preparation device 60, but are contained in the gasification gas containing at least the biomass-derived gasification gas Hydrogen to be added is not supplied to the blending device 60. Therefore, the amount of gasification gas containing at least biomass-derived gasification gas and hydrogen-rich by-product gas supplied as two types of fuel gas is a gasification whose volume ratio in the standard state includes at least biomass-derived gasification gas. It is set to be a value set based on the ratio of carbon monoxide contained in the gas and the hydrogen-rich byproduct gas, the percentage of hydrogen contained in the hydrogen-rich byproduct gas, and the target value. .
For example, when the same biomass-derived gasification gas and hydrogen-rich byproduct gas as the above-described composition are used as the two types of fuel gas, the volume ratio of hydrogen to carbon monoxide contained in the second mixed gas is set to a target value, for example, 2 Assuming that the volume x of the hydrogen-rich by-product gas for setting the biomass-derived gasification gas is 1, from the equation (3),
(0.56x) / (0.48 + 0.07x) = 2 (3)
x = 96 / 42≈2.3.
Therefore, for example, the biomass-derived gas supplied from the CO-rich gasification gas supply device 10 to the mixing device 30 for the amount of hydrogen-rich by-product gas supplied from the H ₂ -rich byproduct gas supply device 20 to the hydrogen separator 40 When it is 2.3 times the amount of the chemical gas, the biomass-derived gasification gas and the hydrogen-rich by-product gas can be used without waste.

5. In effect the first embodiment of the first embodiment, in addition to the effects first reference example is achieved, the hydrogen separator 40 so only hydrogen-rich byproduct gas is supplied, miniaturized hydrogen separator Installation costs and running costs can be reduced.

6. Configuration of Second Embodiment In the second embodiment, as shown in FIG. 3, a carbon monoxide separation device 50 is connected between a CO rich gasification gas supply device 10 and a mixing device 30, and a hydrogen separation device 40. A gasification gas including at least the biomass-derived gasification gas supplied from the CO rich gasification gas supply device 10 to the carbon monoxide separation device 50 and an H ₂ rich byproduct gas supply. The volume ratio in a standard state with the hydrogen-rich by-product gas supplied from the apparatus 20 to the mixing apparatus 30 is the ratio of carbon monoxide contained in the gasification gas including at least the biomass-derived gasification gas, and at least the biomass. and the proportion of hydrogen contained in the gasification gas and the hydrogen-rich product gas containing from gasification gas, the point to be set on the basis of said target value first reference And different. Accordingly, the same components as those in the first reference example are denoted by the same reference numerals and description thereof is omitted.

The CO rich gasification gas supply device 10 is connected to the carbon monoxide separation device 50, and supplies the carbon monoxide rich gasification gas containing at least the biomass-derived gasification gas to the carbon monoxide separation device 50. The carbon monoxide separation device 50 supplies the separated carbon monoxide to the blending device 60 and supplies the fifth off gas to the mixing device. The mixing device 30 mixes the hydrogen-rich by-product gas supplied from the H ₂ rich by-product gas supply device 20 with the fifth off gas to form a third mixed gas, and supplies the third mixed gas to the hydrogen separation device 40. The hydrogen separation device 40 is supplied with the third mixed gas, supplies the separated hydrogen to the preparation device 60, and supplies the sixth off gas to the off gas utilization device 4. The off gas utilization device 4 burns the supplied sixth off gas and uses the combustion heat. Thereby, two types of fuel gas can be used effectively.

The third mixed gas contains carbon monoxide contained in the hydrogen-rich byproduct gas, and the carbon monoxide contained in the third mixed gas is contained in the sixth off gas from the hydrogen separator 40 and is used in the off gas utilization device 4. And not supplied to the compounding device 60. Therefore, at least the gasification gas containing biomass-derived gasification gas and hydrogen contained in the hydrogen-rich by-product gas are supplied to the preparation device 60, but carbon monoxide contained in the hydrogen-rich by-product gas is prepared 60 is not supplied.
Accordingly, the amount of gasification gas containing at least biomass-derived gasification gas and hydrogen-rich byproduct gas supplied as two types of fuel gas is a gasification gas whose volume ratio in the standard state includes at least biomass-derived gasification gas. So as to be a value set based on the ratio of carbon monoxide contained in the gas, the ratio of hydrogen contained in the gasification gas containing at least biomass-derived gasification gas and the hydrogen-rich byproduct gas, and the target value. Set to.
For example, when the biomass-derived gasification gas and the hydrogen-rich byproduct gas having the same composition as described above are used as the two types of fuel gas, the volume ratio of hydrogen to carbon monoxide contained in the synthesis gas is set to a target value, for example 2, Assuming that the volume x of the hydrogen-rich by-product gas for the biomass-derived gasification gas is 1, from the following equation (4),
(0.16 + 0.56x) / (0.48) = 2 (4)
x = 0.80 / 0.56 ≒ 1.4.
Therefore, for example, the amount of hydrogen-rich by-product gas supplied from the H ₂ -rich by-product gas supply device 20 to the mixing device 30 is supplied from the CO-rich gasification gas supply device 10 to the carbon monoxide separation device 50 If it is 1.4 times the quantity of origin gasification gas, biomass origin gasification gas and hydrogen rich by-product gas can be used without waste.

7). In effect the second embodiment of the second embodiment, in addition to the effects first reference example is achieved, since only the gasification gas containing at least from biomass gasification gas is supplied to the carbon monoxide separation unit 50 The carbon monoxide separator 50 can be downsized to reduce installation costs and running costs.

8. The second reference example configuration of the second reference example, as shown in FIG. 4, two types of points using the gasification gas and hydrogen containing at least from biomass gasification gas as fuel gas first reference example Therefore, the same components as those in the first reference example are denoted by the same reference numerals, and this difference will be mainly described. In this case, hydrogen is a fuel gas capable of providing hydrogen, and its composition is 100% hydrogen.

The hydrogen supply device 25 is connected to the preparation device 60 and supplies hydrogen to the preparation device 60. The hydrogen supplied from the hydrogen supply device 25 may be one or a mixture of one or more of soda electrolytic hydrogen, water electrolytic hydrogen, natural gas reformed hydrogen, biogas reformed hydrogen, and CO ₂ -free hydrogen. The carbon monoxide separation device 50 separates carbon monoxide from the gasification gas containing at least the biomass-derived gasification gas rich in carbon monoxide supplied from the CO rich gasification gas supply device 10 and supplies the carbon monoxide to the blending device 60. The seventh off gas is supplied to the off gas utilization device 3. The blending device 60 blends the hydrogen supplied from the hydrogen supply device 25 and the carbon monoxide supplied from the carbon monoxide separation device 50 so that the molar ratio of hydrogen to carbon monoxide becomes a target value, and the synthesis gas. To.

The amount of gasified gas containing at least biomass-derived gasification gas and hydrogen gas supplied as two types of fuel gas is such that the volume ratio in the standard state is included in the gasification gas containing at least biomass-derived gasification gas. The value is set to be a value set based on the ratio of carbon, the ratio of hydrogen contained in hydrogen supplied as fuel gas, and the target value.
For example, when the biomass-derived gasification gas and hydrogen having the same composition as described above are used and the capacity of the biomass-derived gasification gas is 1, the volume ratio of hydrogen to carbon monoxide contained in the mixed gas is set to a target value, for example 2, Because of the hydrogen capacity x, from equation (5),
x / 0.48 = 2 (5)
x = 0.48 × 2 = 0.96.
Therefore, for example, the amount of hydrogen supplied from the hydrogen supply device 25 to the blending device 60 is approximately the same as the amount of biomass-derived gasification gas supplied from the CO-rich gasification gas supply device 10 to the carbon monoxide separation device 50 Then, biomass-derived gasification gas and hydrogen can be used without waste.

9. In the second effect second reference example of the reference example, in addition to the effects first reference example is achieved, since only the gasification gas containing at least from biomass gasification gas is supplied to the carbon monoxide separation unit 50 In addition, the carbon monoxide separator 50 can be reduced in size and a hydrogen separator is not required, so that installation costs and running costs can be reduced.

10. The third reference example configuration of the third reference example, as shown in FIG. 5, two of the at least a point with the gasification gas and water vapor containing biomass-derived gasification gas first reference as a fuel gas Since this is an example , the same components as those in the first reference example are denoted by the same reference numerals, and this difference will be mainly described. In this case, the steam is a fuel gas capable of providing hydrogen.

  The CO rich gasification gas supply device 10 is connected to the distribution device 70, and supplies a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide to the distribution device 70. A steam supply unit 27 is connected to the carbon monoxide shift converter 80 and supplies steam to the carbon monoxide shift converter 80. The distribution device 70 is connected to the carbon monoxide separation device 50 and the carbon monoxide conversion device 80, distributes the supplied gasification gas containing at least biomass-derived gasification gas at a predetermined ratio, and distributes the distributed gasification gas at least One part of the gasified gas containing gas is supplied to the carbon monoxide separator 50 and the other part is supplied to the carbon monoxide shift converter 80. The carbon monoxide separation device 50 separates the other part of the supplied gasification gas containing at least biomass-derived gasification gas into carbon monoxide and an eighth off gas, and supplies the separated carbon monoxide to the preparation device 60, The eighth off gas is supplied to the off gas utilization device 3.

The carbon monoxide shifter 80 converts the carbon monoxide contained in the other part of the gasification gas including at least the biomass-derived gasification gas supplied from the distribution device 70 and the water vapor supplied from the water vapor supply device 27 into a catalyst. Exothermic reaction is carried out in the presence as shown in chemical formula (2) to generate a hydrogen rich shift gas containing gas consisting of hydrogen and carbon dioxide gas.
CO + H ₂ O → H ₂ + CO ₂ (Exothermic reaction) (2)
The carbon monoxide shift converter 80 is connected to the hydrogen separator 40 and supplies the generated hydrogen rich shift gas containing gas to the hydrogen separator 40. The carbon monoxide shift converter 80 includes a heat dissipating device 81, and the heat dissipating device 81 dissipates the heat generated by the exothermic reaction. The hydrogen separation device 40 is connected to the preparation device 60 and the off gas utilization device 4, supplies the separated hydrogen to the preparation device 60, and supplies the ninth off gas to the off gas utilization device 4. When the off-gas utilization devices 3 and 4 are used as a boiler combustion furnace, and water vapor generated by the boiler is supplied to the water vapor supply device 27, generation of carbon dioxide gas can be suppressed. In addition, waste heat of FT synthesis (exothermic reaction) in the FT synthetic oil production apparatus 2 and waste heat in the CO-rich gasification gas supply apparatus 10 can be used.

The amount of gasification gas containing at least biomass-derived gasification gas and water vapor supplied as two types of fuel gas is carbon monoxide contained in the gasification gas containing at least biomass-derived gasification gas in a volume ratio in a standard state And the ratio of hydrogen, the distribution ratio p of the other part to one part of the gasification gas containing biomass-derived gasification gas distributed by the distribution apparatus 70, and the value set based on the target value Set as follows. For example, using the same biomass-derived gasification gas and water vapor as the above-described composition as the two types of fuel gas, the distribution ratio p is calculated for the case where the target value is 2. The amount of carbon monoxide supplied from the distribution device 70 to the carbon monoxide shift converter 80 and the amount of water vapor supplied from the water vapor supply device 27 are the same from the chemical formula (2). Assuming that the volume of biomass-derived gasification gas supplied from the CO-rich gasification gas supply device 10 is 1, the amount of carbon monoxide supplied from the carbon monoxide separation device 50 to the blending device 60 is [0.48 × 1/1. (1 + p)], and the amount of hydrogen supplied from the hydrogen separator 40 to the blending device 60 is the amount of hydrogen denatured from carbon monoxide contained in the other part of the biomass-derived gasification gas [0.48 × p / (1 + p)] and the amount of hydrogen contained in the other part [0.16 × p / (1 + p)]. Therefore, the distribution ratio p is given by the following equation (5):
[0.48 × p / (1 + p) + 0.16 × p / (1 + p)] / [0.48 × 1/1 (1 + p)] = 2 (5)
p = 0.96 / 0.64 = 1.5.
Thus, for example, the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device 10 is distributed by the distribution device 70 such that the distribution ratio of the other portion to one portion is 1.5, and the water vapor supply device 80 The amount of steam converted to a standard state supplied to the carbon monoxide shift converter 80 from the above is p / (1 + p) = 0.6 times the amount of biomass-derived gasification gas supplied from the CO rich gasification gas supply device 10 If it makes it, biomass-derived gasification gas and water vapor | steam can be utilized without waste.

11. In the third reference example of the effect the third reference example, in addition to the effects first reference example is achieved, since only the gasification gas in the carbon monoxide separation unit 50 including at least from biomass gasification gas is supplied Since the carbon monoxide separator 50 can be reduced in size, installation costs and running costs can be reduced. Furthermore, since the two types of fuel gas both emit small amounts of carbon dioxide gas, carbon dioxide gas emissions can be extremely reduced to produce a synthesis gas for producing a low carbon FT synthetic oil.

12. Third Embodiment Configuration third embodiment, as shown in FIG. 6, the mixing device 30 to the carbon monoxide separation unit 50 is connected in place of the off-gas utilization unit 3, the mixing device 30 carbon monoxide shift Since only the point of connection between the apparatus 80 and the hydrogen separator 40 is different from the third reference example , only the difference will be described.

  The carbon monoxide separation device 50 separates carbon monoxide from one portion of the gasification gas containing at least biomass-derived gasification gas supplied from the distribution device 70 and prepares the separated carbon monoxide 60, and the eighth off gas is supplied to the mixing device 30. The mixing device 30 mixes the shift gas-containing gas supplied from the carbon monoxide shift converter 80 with the eighth off gas supplied from the carbon monoxide separation device 50 to generate a fourth mixed gas to generate a hydrogen separation device 40. Supply to The hydrogen separation device 40 separates hydrogen from the fourth mixed gas and supplies it to the preparation device 60, and supplies the tenth off gas to the off gas utilization device 4.

In the third embodiment, for example, when the biomass-derived gasification gas and water vapor having the same composition as those described above are used as the two types of fuel gas and the target value is 2, the distribution ratio p by the distribution device 70 is calculated. When the amount of biomass-derived gasification gas is 1, the amount of carbon monoxide contained in one part of the biomass-derived gasification gas distributed by the distributor 70 is 0.48 × 1 / (1 + p), It is separated by the carbon monoxide separation device 50 and supplied to the preparation device 60. The amount of hydrogen contained in one portion is 0.16 × p / (1 + p), and is contained in the eighth off gas and supplied to the mixing device 30. The amount of carbon monoxide contained in the other part of the biomass-derived gasified gas distributed by the distributor 70 is 0.48 × p / (1 + p), and the carbon monoxide converter 80 converts it with the same amount of water vapor. The reaction results in a hydrogen rich shift gas containing gas containing the same amount of hydrogen. Since the metamorphic gas-containing gas contains hydrogen contained in the other portion of the biomass-derived gasification gas, the fourth mixed gas in which the eighth off gas and the metamorphic gas-containing gas are mixed is [0.16 + 0.48 × The hydrogen is contained in p / (1 + p)], and the hydrogen is separated by the hydrogen separator 40 and supplied to the preparation device 60. Therefore, the distribution ratio p is given by the following equation (5):
[0.16 + 0.48 × p / (1 + p)] / [0.48 × 1 / (1 + p)] = 2 (5)
p = 0.80 / 0.64 = 1.25.
Thereby, for example, the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device 10 is distributed by the distribution device 70 so that the distribution ratio of the other portion to the one portion is 1.25, and from the water vapor supply device 27. The amount of water vapor converted to the standard state supplied to the carbon monoxide shifter 80 is p / (1 + p) = 0.56 times the amount of biomass-derived gasification gas supplied from the CO rich gasification gas supply device 10. Then, biomass-derived gasification gas and water vapor can be utilized without waste.

11. The third effect third embodiment of the embodiment, in addition to the effect which the third reference example is achieved, all the carbon and hydrogen contained in the gasification gas containing at least from biomass gasification gas in the production of synthesis gas Can be used.

12. Fourth fourth reference example configuration of a reference example, as shown in FIG. 7, two types of fuel that it uses a carbon monoxide-rich product gas and carbon dioxide-free hydrogen as a gas a second reference example Therefore, the same components as those in the second reference example are denoted by the same reference numerals, and the difference will be mainly described. In this case, carbon dioxide gas-free hydrogen is a fuel gas capable of providing hydrogen, and the composition thereof is 100% hydrogen.
Carbon dioxide-free hydrogen is hydrogen produced by reducing the amount of carbon dioxide, and any one of hydrogen derived from coal gasification gas with CCS, water electrolysis hydrogen using renewable power, biomass-derived hydrogen, nuclear hydrogen, etc. A mixture of a plurality of species may be used. Coal gasification gas derived hydrogen with CCS is hydrogen generated by separating hydrogen from coal gasification gas produced by a coal gasification gas apparatus with CCS (Carbon-Dioxide Capture and Storage). Renewable power-utilizing water electrolysis hydrogen is hydrogen generated by electrolyzing water using electric power obtained by solar power generation, wind power generation, geothermal power generation, wave power generation, tidal power generation and the like. Biomass-derived hydrogen is hydrogen produced by reforming biogas obtained by methane fermentation, or hydrogen produced by the transformation reaction of biomass gasification gas carbon monoxide. Nuclear hydrogen includes hydrogen produced by the electrolysis of water by nuclear power and hydrogen produced by the thermochemical decomposition of water by reactor heat.
As the by-product gas rich in carbon monoxide, a converter gas, a blast furnace gas, or the like having a large carbon dioxide emission coefficient is used. The converter gas is a by-product gas generated in the iron refining process in the converter and contains about 70% of carbon monoxide. Blast furnace gas is a by-product gas produced when iron ore is reduced in a blast furnace to produce pig iron, and contains about 25% carbon monoxide.

  The CO-rich byproduct gas supply device 15 is connected to the carbon monoxide separator 50, and supplies a carbon monoxide-rich byproduct gas having a high carbon monoxide content (ratio) to the carbon monoxide separator 50. The carbon monoxide separator 50 separates carbon monoxide from the carbon monoxide-rich by-product gas supplied from the CO-rich by-product gas supply device 15 and supplies the carbon monoxide to the blending device 60, and the eleventh off gas is used as an off-gas utilization device Supply to 3. The eleventh off gas may be made harmless by flaring and discharged to the outside. A carbon dioxide free hydrogen supply device 29 is connected to the preparation device 60 and supplies carbon dioxide free hydrogen to the preparation device 60.

The amounts of by-product gas rich in carbon monoxide and carbon dioxide-free hydrogen gas supplied as two types of fuel gas are the by-product gas rich in carbon monoxide in the standard ratio as in the second reference example. Are set to be values set based on the ratio of carbon monoxide contained in the fuel gas, the ratio of hydrogen contained in carbon dioxide gas-free hydrogen as the fuel gas, and the target value.

13. In fourth effect the fourth reference example of the reference example, in addition to the effects first reference example is achieved, since only the carbon monoxide-rich product gas is supplied to the carbon monoxide separation unit 50, carbon monoxide The carbon separator 50 can be reduced in size. Furthermore, since no hydrogen separator is required, installation costs and running costs can be reduced. Although carbon monoxide rich by-product gas is used instead of gasification gas containing at least biomass-derived gasification gas rich in carbon monoxide as one fuel gas, carbon dioxide gas emissions are larger than in the first embodiment. Since carbon dioxide-free hydrogen is used as the other fuel gas, carbon dioxide emission can be reduced to produce a synthesis gas for producing a low carbon FT synthetic oil.

1: Synthesis gas production system for low carbon FT synthetic oil production 2: FT synthetic oil production system 3, 4: Off gas utilization system 10: CO rich gasification gas supply system 15: CO rich by-product gas supply system 20 : H ₂ rich by-product gas supply device, 25: Hydrogen supply device, 27: Steam supply device, 29: Carbon dioxide free hydrogen supply device, 30: Mixing device, 40: Hydrogen separation device, 50: Carbon monoxide separation device, 60: preparation device, 70: distribution device, 80: carbon monoxide conversion device

Claims (3)

A CO rich gasification gas supply device for supplying a gasification gas containing at least biomass-derived gasification gas rich in carbon monoxide;
An H ₂ rich byproduct gas supply device for supplying a hydrogen rich byproduct gas;
A hydrogen separation device connected to the H ₂ rich byproduct gas supply device to separate the hydrogen rich byproduct gas into hydrogen and a third off gas;
A gasification gas containing at least the biomass-derived gasification gas is supplied from the CO-rich gasification gas supply device, the third off-gas is supplied from the hydrogen separator, and a gasification gas containing at least the biomass-derived gasification gas; A mixing device for mixing the third off gas with the third off gas to obtain a second mixed gas;
A carbon monoxide separator that receives the second mixed gas from the mixing device and separates the second mixed gas into carbon monoxide and a fourth off gas;
The separated hydrogen is supplied from the hydrogen separator, the separated carbon monoxide is supplied from the carbon monoxide separator, and the separated carbon monoxide and the separated hydrogen are converted to carbon monoxide. And a blending device that blends into a synthesis gas so that the molar ratio of hydrogen to the target value becomes a target value,
A gasification gas containing at least the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device to the mixing device and a hydrogen-rich gas supplied from the H ₂ rich byproduct gas supply device to the hydrogen separation device The volume ratio in the standard state with the by-product gas is the ratio of carbon monoxide contained in the gasification gas containing at least the biomass-derived gasification gas and the hydrogen-rich byproduct gas, and the hydrogen-rich by-product gas. Set based on the ratio of hydrogen contained in and the target value,
Syngas production system for low carbon FT synthetic oil production. A CO rich gasification gas supply device for supplying a gasification gas containing at least biomass-derived gasification gas rich in carbon monoxide;
An H ₂ rich byproduct gas supply device for supplying a hydrogen rich byproduct gas;
A carbon monoxide separation device connected to the CO-rich gasification gas supply device to separate the gasification gas containing at least the biomass-derived gasification gas into carbon monoxide and a fifth off gas;
The hydrogen-rich byproduct gas is supplied from the H ₂ rich byproduct gas supply device, the fifth off gas is supplied from the carbon monoxide separator, and the hydrogen rich byproduct gas and the fifth off gas are combined. A mixing device for mixing into a third mixed gas;
A hydrogen separation device which receives the third mixed gas from the mixing device and separates the third mixed gas into hydrogen and a sixth off gas;
The separated hydrogen is supplied from the hydrogen separator, the separated carbon monoxide is supplied from the carbon monoxide separator, and the separated carbon monoxide and the separated hydrogen are converted to carbon monoxide. And a blending device for blending the synthesis gas so that the molar ratio of hydrogen to
A gasification gas containing at least the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device to the carbon monoxide separation device and the hydrogen supplied from the H ₂ -rich by-product gas supply device to the mixing device A volume ratio in a standard state with a rich by-product gas, a ratio of carbon monoxide contained in the gasification gas containing at least the biomass-derived gasification gas, a gasification gas containing the at least biomass-derived gasification gas, Based on the ratio of hydrogen contained in the hydrogen-rich byproduct gas and the target value,
Syngas production system for low carbon FT synthetic oil production. A CO-rich gasification gas supply device for supplying a gasification gas containing at least a biomass-derived gasification gas rich in carbon monoxide,
A water vapor supply device for supplying water vapor;
A distribution device for distributing the gasification gas containing at least the biomass-derived gasification gas supplied from the CO-rich gasification gas supply device to one portion and the other portion at a predetermined ratio;
One part of the gasification gas containing at least the biomass-derived gasification gas is supplied from the distributor, and one part of the gasification gas containing the at least the biomass-derived gasification gas is separated into carbon monoxide and an eighth off gas. A carbon monoxide separator,
The water vapor is supplied from the water vapor supply device, the other part of the gasification gas containing at least the biomass-derived gasification gas is supplied from the distribution device, and the gasification gas containing the water vapor and at least the biomass-derived gasification gas A carbon monoxide shift device that produces a hydrogen-rich shift gas-containing gas by a shift reaction with the other portion;
The shift gas-containing gas is supplied from the carbon monoxide shifter, the eighth off gas is supplied from the carbon monoxide separator, and the shift gas-containing gas and the eighth off gas are mixed to form a fourth mixed gas. And a mixing device
A hydrogen separation device connected to the mixing device for separating the fourth mixed gas into hydrogen and a tenth off gas;
The separated hydrogen is supplied from the hydrogen separator, the separated carbon monoxide is supplied from the carbon monoxide separator, and the separated carbon monoxide and the separated hydrogen are converted to carbon monoxide. And a blending device that blends into a synthesis gas so that the molar ratio of hydrogen to the target value becomes a target value,
In a standard state of the gasification gas containing at least the biomass-derived gasification gas supplied from the CO rich gasification gas supply device to the distribution device and the water vapor supplied from the water vapor supply device to the carbon monoxide shifter The volume ratio of carbon monoxide is set based on the ratio of carbon monoxide and hydrogen contained in the gasification gas containing at least the biomass-derived gasification gas, and the target value.
Syngas production system for low carbon FT synthetic oil production.

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