燃料化学学报2017，Vol.45Issue(4)：408-417,10.
粒径对不同煤阶煤焦气化反应活性的影响研究
Effect of particle size on gasification of char with different coal ranks
摘要
Abstract
Eight coal chars of different coal ranks were prepared to investigate the effects of coal rank, reaction temperature and particle size on char-CO2 gasification using a thermogravimetric analyzer ( TGA) . The variation of char-CO2 gasification rate with carbon conversion was studied, especially at high conversion stage. As a result, the crystalline structures of higher rank chars are more orderly, resulting in a lower gasification rate. For high rank coals like anthracite, the CO2 gasification rate of char with 40μm size is about 7 times higher than that with 300μm size to reach 95% conversion at 1300℃. For low rank coals, particle size has little effect on the gasification rate. The results indicate that the effect of particle size on char-CO2 gasification is dependent on coal rank. The specific surface area of high rank coals is much smaller than that of low rank coals, which contributes to the significant effect of particle size on high rank coal gasification. The effect of gasification temperature and particle size on gasification rate for high rank coals is more significant than that for low rank coals.关键词
煤阶/气化温度/粒径/CO2气化Key words
coal rank/gasification temperature/particle size/CO2 gasification分类
化学化工引用本文复制引用
邹晓鹏,盛羽静,陆海峰,郭晓镭,郭庆华,龚欣..粒径对不同煤阶煤焦气化反应活性的影响研究[J].燃料化学学报,2017,45(4):408-417,10.基金项目
The project was supported by Sinopec Scientific and Technological Development Projects ( 415022 ) and the Fundamental Research Funds for the Central Universities(222201414030).中国石油化工股份有限公司科技开发项目(415022)和中央高校基本科研业务费专项资金(222201414030)资助 （ 415022 ）
