文献类型：期刊文献

英文题名：Catalytic hydrogasification characteristic of coal with diverse properties in a pressurized fluidized bed

作者：Yan, Shuai[1];Qu, Xuan[2];Xia, Zihong[1];Chen, Caixia[1];Bi, Jicheng[2]

机构：[1]East China Univ Sci & Technol, Dept Energy & Chem Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

年份：2021

卷号：296

外文期刊名：FUEL

收录：;EI(收录号：20212910659832);WOS:【SCI-EXPANDED(收录号:WOS:000640962200009)】；

基金：The authors gratefully acknowledge financial support from the foundation of NSFCXinjiang joint fund (U1703253) , the State Key Laboratory of Coal Conversion (Grant No. J1920202) , and the National Natural Science Foundation of China (21908062) .

语种：英文

外文关键词：Coal gasification; Catalytic hydrogasification; Methane; Pressurized fluidized bed

摘要：Coal catalytic hydrogasification is an efficient approach to produce CH4. This study investigated hydrogasification characteristic of coal with diverse properties (caking propensity, high rank and sulfur content) in a pressurized fluidized bed. The approaches to realize high CH4 yield and stable fluidization were explored. Experimental results showed that carbon structure and sulfur content in coal were the key factors influencing hydrogasification reactivity. The mechanically mixed CaO/CaCO3 migrated into the interior of coal particle to enhance the activity of Co towards graphite carbon, and capture sulfur adsorbing on Co surface. The caking propensity of coal brought little resistance to the activity of catalyst, whereas, caused serious agglomerating phenomenon. The blending of caking coal with non-caking, low rank coals induced the active hydrogen spill-over and the volatiles-catalyst-coal interactions, which not only in-situ minimized the agglomeration propensity, but also enhanced the overall hydrogasification reactivity. Furthermore, the mechanism of hydrogasification was proposed by taking account of coal property, to broadening the application range of hydrogasification and producing CH4 efficiently (similar to 80.0 wt% in 1.0 h).