燃料化学学报2017，Vol.45Issue(1)：21-28,8.
生物质灰对煤焦加氢气化的催化作用
Catalytic effect of biomass ash on the hydrogasification of coal char
摘要
Abstract
Biomass ashes were prepared from three rich in alkaline and alkaline earth metal materials, viz. , wheat straw ( WS ) , sea grape ( SG ) and ixeris chinensis ( IC ) , at different temperatures of 500 , 600 and 815℃; the catalytic effect of biomass ash on the hydro-gasification of Shenfu coal ( SF ) char was then investigated. The results show that the ash yield and the content of alkali metals and chlorine reduce with increasing ashing temperature from 500 to 815 ℃; significant ash melting can be observed at high temperature near 815℃. The biomass ashes obtained at 600 ℃ exhibits the best catalytic effect on the gasification of coal char;the more the ash is loaded with the char, the stronger exhibit the promoting effect on the gasification is. The ash from IC performs best in catalyzing the coal char gasification, whereas the SG ash is the worst catalyst. The high content of silica in the WS ash and the high content of chlorine in the SG ash may explain their poor catalytic effect on the char gasification; chlorine can aggravate the volatilization of alkali metal and lead to a severer inhibiting effect on the coal char hydrogasification than silica with the same molar quantity.关键词
煤焦/加氢气化/生物质灰/硅/氯Key words
coal char/hydro-gasification/biomass ash/silica/chlorine分类
化学化工引用本文复制引用
姚奎,张金刚,竹怀礼,王兴军,于广锁,刘海峰,王辅臣..生物质灰对煤焦加氢气化的催化作用[J].燃料化学学报,2017,45(1):21-28,8.基金项目
The project was supported by the National Natural Science Foundation of China(21176078).国家自然科学基金(21176078)资助 （21176078）
