燃料化学学报2018，Vol.46Issue(3)：273-282,10.
循环流化床气化细粉灰熔融特性研究
Melting characteristics of fine ash from circulating fluidized bed gasifier
摘要
Abstract
Effects of temperature, atmosphere and residual carbon on melting behavior and mineral transition mechanism of fine ash from Chiping and Suqian circulating fluidized bed gasifier at high temperature was studied using fusion point analyzer,X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results show that ash fusion temperature of two fine ash is the lowest under reducing atmosphere. The existence of mullite is the major reason for the higher ash fusion temperature of Suqian fine ash than that of Chiping. The ash fusion temperature increases with increasing mass fraction of residual carbon. When temperature is above 1300℃ and the mass fraction of residual carbon is more than 3%, moissanite is formed in slags of both fine ashes. Moissanite is mainly responsible for the worse fusibility of ash with higher content of residual carbon.关键词
循环流化床煤气化/气化细粉灰/灰熔融/残炭Key words
circulating fluidized bed gasification/fine ash/ash fusibility/residual carbon分类
化学化工引用本文复制引用
邓鸿翔,任强强,张玉魁..循环流化床气化细粉灰熔融特性研究[J].燃料化学学报,2018,46(3):273-282,10.基金项目
The project was supported by the National Key Research and Development Program of China(2017YFB0602302).国家重点研发计划(2017YFB0602302)项目资助 （2017YFB0602302）
