Patent ID: 6190429
Filing Date: 2001-02-20
Classification: C10G,C10J,F23G,F23J,F23L,Y02E

Abstract:
A method for treating combustible matter by gasification, said method comprising:supplying said combustible matter into a fluidized-bed reactor;gasifying said combustible matter in said fluidized-bed reactor at a temperature ranging from 450 to 800.degree. C. by contacting said combustible matter with a gasifying agent supplied to said fluidized-bed reactor to produce gas and carbonous material, said carbonous material being crushed into char in a fluidized-bed using sand or alumina as a fluidized medium;introducing said gas and said char produced in said fluidized-bed reactor directly into a high-temperature combustor; andproducing low calorific gas or medium calorific gas in said high-temperature combustor by combusting said gas and said char at a temperature of at least 1300.degree. C. by contacting said gas and said char with gas supplied to said high-temperature combustor, and recovering slag by melting ash content contained in said char.