Method for producing synthesis gas and fuel production system

Abstract

A method for producing a synthesis gas for producing a fuel from a biomass raw material includes supplying hydrogen to the biomass raw material such that a mass ratio represented by [mass of hydrogen gas]/[mass of biomass] is 0.01 to 0.03, in which supplying steam is not provided.

What is claimed is: 
     
         1 . A method for producing a synthesis gas for producing a fuel from a biomass raw material, the method comprising:
 supplying hydrogen to the biomass raw material such that a mass ratio represented by [mass of hydrogen gas]/[mass of biomass] is 0.01 to 0.03,   wherein supplying steam is not provided.   
     
     
         2 . The method for producing a synthesis gas according to  claim 1 ,
 wherein gasification of the biomass raw material is performed at 700° C. or higher and lower than 850° C.   
     
     
         3 . The method for producing a synthesis gas according to  claim 1 ,
 wherein a supply amount of the hydrogen gas is 100 L/day or more.   
     
     
         4 . A fuel production system that produces a liquid fuel from a biomass raw material, comprising:
 a gasification device including a gasification furnace configured to produce a synthesis gas containing hydrocarbons by reacting the biomass raw material, hydrogen, carbon monoxide, and carbon dioxide using the method for producing a synthesis gas according to  claim 1 ;   a hydrogen supply unit for supplying hydrogen to the gasification device such that a mass ratio represented by [mass of hydrogen gas]/[mass of biomass] is 0.01 to 0.03; and   a steam supply control unit for stopping supply of steam from the steam supply unit for supplying steam to the gasification device.   
     
     
         5 . The fuel production system according to  claim 4 , further comprising:
 a first hydrogen gas supply control unit for supplying hydrogen to the gasification device in a case where a temperature in the gasification furnace is 700° C. or higher and lower than 850° C.   
     
     
         6 . The fuel production system according to  claim 4 , further comprising:
 a second hydrogen gas supply control unit for supplying hydrogen to the gasification device in a case where a supply amount of the hydrogen gas to be supplied to the gasification device is 100 L/day or more.   
     
     
         7 . The fuel production system according to  claim 4 , further comprising:
 a first synthesis gas supply unit for using the synthesis gas as a raw material of the liquid fuel in a case where a gasification rate of the biomass raw material is 50 mol % or more; and   a second synthesis gas supply unit for using the synthesis gas as a heat source of the gasification furnace in a case where the gasification rate of the biomass raw material is less than 50 mol %.   
     
     
         8 . A method for producing a liquid fuel, comprising:
 producing a synthesis gas using the method of  claim 1 , and   producing a Fischer-Tropsch oil by subjecting the synthesis gas to a Fischer-Tropsch synthesis reaction.   
     
     
         9 . The method for producing a liquid fuel according to  claim 8 , further comprising
 subjecting a biomass raw material to a gasification at 700° C. or higher and lower than 850° C.   
     
     
         10 . The method for producing a liquid fuel according to  claim 8 , further comprising
 supplying a hydrogen gas at an amount of 100 L/day or more.   
     
     
         11 . A method for producing a synthesis gas for producing a fuel from a biomass raw material, the method comprising:
 supplying hydrogen to the biomass raw material such that a mass ratio represented by [mass of hydrogen gas]/[mass of biomass] is 0.01 to 0.03; and   supplying steam to the biomass raw material such that a mass ratio represented by [mass of steam]/[mass of biomass] is 1.0 or less.   
     
     
         12 . The method for producing a synthesis gas according to  claim 11 ,
 wherein gasification of the biomass raw material is performed at 700° C. or higher and lower than 850° C.   
     
     
         13 . The method for producing a synthesis gas according to  claim 11 ,
 wherein a supply amount of the hydrogen gas is 100 L/day or more.   
     
     
         14 . A fuel production system that produces a liquid fuel from a biomass raw material, comprising:
 a gasification device including a gasification furnace configured to produce a synthesis gas containing hydrocarbons by reacting the biomass raw material, hydrogen, carbon monoxide, and carbon dioxide using the method for producing a synthesis gas according to  claim 11 ;   a hydrogen supply unit for supplying hydrogen to the gasification device such that a mass ratio represented by [mass of hydrogen gas]/[mass of biomass] is 0.01 to 0.03; and   a steam supply control unit for supplying steam to the gasification device, from the steam supply unit for supplying steam to the gasification device, such that a mass ratio represented by [mass of steam]/[mass of biomass] is 1.0 or less.   
     
     
         15 . The fuel production system according to  claim 14 , further comprising:
 a first hydrogen gas supply control unit for supplying hydrogen to the gasification device in a case where a temperature in the gasification furnace is 700° C. or higher and lower than 850° C.   
     
     
         16 . The fuel production system according to  claim 14 , further comprising:
 a second hydrogen gas supply control unit for supplying hydrogen to the gasification device in a case where a supply amount of the hydrogen gas to be supplied to the gasification device is 100 L/day or more.   
     
     
         17 . The fuel production system according to  claim 14 , further comprising:
 a first synthesis gas supply unit for using the synthesis gas as a raw material of the liquid fuel in a case where a gasification rate of the biomass raw material is 50 mol % or more; and   a second synthesis gas supply unit for using the synthesis gas as a heat source of the gasification furnace in a case where the gasification rate of the biomass raw material is less than 50 mol %.   
     
     
         18 . A method for producing a liquid fuel, comprising:
 producing a synthesis gas using the method of  claim 1 , and   producing a Fischer-Tropsch oil by subjecting the synthesis gas to a Fischer-Tropsch synthesis reaction.   
     
     
         19 . The method for producing a liquid fuel according to  claim 18 , further comprising
 subjecting a biomass raw material to a gasification at 700° C. or higher and lower than 850° C.   
     
     
         20 . The method for producing a liquid fuel according to  claim 18 , further comprising
 supplying a hydrogen gas at an amount of 100 L/day or more.