GASIFICATION METHOD AND SYSTEM OF THE SAME, AND COAL GASIFICATION COMPOSITE ELECTRICITY GENERATION METHOD AND SYSTEM OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method that reduces an outside introduction amount of steam for shift reaction in a coal gasification system.SOLUTION: A gasification system is characterized in that a fuel containing carbon and a gas containing oxygen are reacted to be subjected to gasification, a generated gas is subjected to atomization of water to be cooled, a solid fine particle contained in a cooled generation gas is removed, the generated gas in which the solid fine particle is removed is contacted by an ammonia decomposition catalyst to decompose ammonia contained in the generation gas to Nand H, and further is contacted by a shift catalyst to convert a part of CO contained in the generation gas to COand H.