燃料化学学报2017，Vol.45Issue(11)：1303-1309,7.
山西典型高铝煤灰熔融及黏温特性改性实验研究
Study on ash fusion and viscosity temperature characteristics modification of Shanxi typical high aluminum coal
摘要
Abstract
In this work, the influences of two industrial fluxes ( i. e. limestone and clay) and their composite flux on ash fusion and viscosity temperature characteristics of Shanxi typical high-alumina coals were explored, respectively. The results indicated that flow temperature of coal ash decreased with increasing additive amount of flux. Moreover, limestone exhibited a better flux effect than clay, among which the flux effect of composite flux was more obvious than that of the single fluxes. It was also found that limestone could significantly reduce the tcv of coal ash slag and clay could promote the slag type transformation towards glassy slag. Compared with single fluxes, composite flux exhibited synergistic effect on both the significant reduction of tcv and the promotion of slag type transformation. For Shanxi typical high-alumina Liangdu coal, when total amount of composite flux was 4% (2% limestone+2% clay), not only the slag transformed into glassy slag, but also tcv of the slag decreased 133 and 222 ℃ compared with single flux limestone ( 2%) and clay ( 6%) , respectively. Minerals analysis results confirmed the fluxing principle of different fluxes. After the addition of composite flux, Shanxi high-alumina coals could meet the requirements of industrial entrained-flow gasifier.关键词
高铝煤/工业助熔剂/熔融特性/黏温特性Key words
high-aluminum coal/composite flux/ash fusion characteristics/viscosity temperature characteristics分类
化学化工引用本文复制引用
马雅诗,胡晓飞,刘霞,郭庆华,于广锁..山西典型高铝煤灰熔融及黏温特性改性实验研究[J].燃料化学学报,2017,45(11):1303-1309,7.基金项目
The project was supported by the National Natural Science Foundation of China (21676091).国家自然科学基金(21676091)资助 （21676091）
