Purification method of biomass gasification system and biomass gasification gas

摘要

PROBLEM TO BE SOLVED: To provide a biomass gasification system which can efficiently remove a tar component containing heavy and light hydrocarbons in a gasified gas which is formed by gasifying a biomass, and to provide a biomass gasification purification method.;SOLUTION: The biomass gasification system includes: a biomass gasification furnace 13 which gasifies a supplied biomass 11; a first dust remover 15 which removes a gasification char contained in a generated gas 14 which is a gasified gas formed by the biomass gasification furnace 13; a generated gas cooler 16 which cools the generated gas 14 from which a biomass gasification char 30 has been removed by the first dust remover 15; a second dust remover 17 which removes a dust in the generated gas 14 after cooling; a first tar removing column 19 which adsorbs and removes the tar component in the generated gas 14 in which dust removal has been carried out by the second dust remover 17; and a second tar removing column 41 which is prepared at a slip stream side of the first tar removing column 19, and adsorbs and removes the light hydrocarbon which remains in the generated gas 14.;COPYRIGHT: (C)2012,JPO&INPIT