文献类型：期刊文献

英文题名：Experimental Studies on CO2 Gasification of Petcoke Particle Swarm at High Temperatures

作者：Liu, Ming;Shen, Zhongjie;Xu, Jianliang;Liang, Qinfeng;Liu, Haifeng[1]

机构：[1]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2018

卷号：64

期号：11

起止页码：4009

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20183805836067);WOS:【SCI-EXPANDED(收录号:WOS:000446159600022)】；

基金：This study was supported by the National Natural Science Foundation of China (U1402272), the National Natural Science Foundation of China (21376082), and the Shanghai Engineering Research Center of Coal Gasification (18DZ2283900).

语种：英文

外文关键词：particle swarm; diffusion process; partial pressure; high temperature; petcoke gasification

摘要：Particle concentration was an important factor that affected the gasification kinetics of carbonaceous material in gasifier. In this study, in situ gasification characteristics of particle swarm with different particle concentrations were investigated at high temperatures. The reaction rate of dispersed particle swarm was higher than that of dense particle swarm. Furthermore, it was demonstrated that molecular diffusion in high-temperature stage was the dominant diffusion mode. And the effect of particle concentration on diffusion process was limited. While the CO2 concentration in particle swarm evidently decreased with the increase of particle concentration. It was concluded that the CO2 concentration was the primary factor that affected the gasification of petcoke compared with the diffusion process in particle swarm at the same reaction temperature. The effects of CO2 concentration in particle swarms on intrinsic gasification kinetics of carbonaceous matter were generally underrated in present studies. (C) 2018 American Institute of Chemical Engineers