Research and development on coal gasification-combustion technology
The coal gasification-combustion technology decouples the volatilization stage,combustion stage and burnout stage in the traditional combustion process,making volatilization stage and char combustion two independent process-es.By regulating the combustion reaction between volatile and char,it effectively suppresses the generation of nitrogen oxides(NOx)while achieving efficient combustion.This article comprehensively summarizes the main research and de-velopment made by this technology in the past forty years,including basic research,technology development and engi-neering demonstration,and also introduces the latest reported entrained bed gasification method.The technology can be applied to large coal-fired power plants to achieve deep boiler peak shaving(less than 20%boiler load)under the background of"carbon neutrality"and"carbon peaking".The process route analysis and prospects are also conducted.