燃料化学学报2018，Vol.46Issue(3)：257-264,8.
添加煤灰及混合氧化物对石油焦CO2高温气化反应的影响
Effect of adding coal ashes and oxide mixtures on CO2gasification reactivity of petcoke at high temperature
摘要
Abstract
Three additives(combustion coal ash,coal gasification ash and oxide mixture) with similar chemical composition were added into petcoke by dry mixing and wet mixing. Their gasification reactivities under CO2 atmosphere were investigated by a Thermo gravimetric Analyzer (TGA) at 1200-1400℃. The influence of mixing method,coal ash content and phase components on petcoke catalytic gasification was studied. The oxide mixture was used to simulate the catalytic effect of actual coal ash at high temperature. The results indicate that gasification reaction rate of petroleum coke is accelerated with increasing amount of coal ash. Dry mixing and gasification coal ash has less obvious effects on catalytic activity at 1200 and 1300 ℃. But the mixing method and mode of active metal has little influence on gasification reaction of petcoke at 1400 ℃. It is because the molten ash keeps good contact with petcoke,which makes reactive metals more freely and enhances mass transfer resistance. The catalytic index of the oxide mixtures has linear relationship with content of Fe2O3 and CaO during petcoke gasification at high temperature. This means coal ashes with high content of Fe and Ca could accelerate CO2 gasification reactivity of petcoke.关键词
石油焦/煤灰/CO2高温气化/催化指数Key words
petcoke/coal ash/CO2 gasification at high temperature/catalytic index分类
化学化工引用本文复制引用
张可怡,陈雪莉,孟德喜,郭晓镭,龚欣..添加煤灰及混合氧化物对石油焦CO2高温气化反应的影响[J].燃料化学学报,2018,46(3):257-264,8.基金项目
The project was supported by the Fundamental Research Funds for the Central University(222201718003).中央高校基本科研业务费专项资金(222201718003)资助 （222201718003）
