文献类型：会议论文

英文题名：Effect of CaO and biomass ash on catalytic hydrogasification behavior of coal char

作者：Wang Xingjun[1];Yao, Kui[1];Huang, Xin[2];Chen, Xueli[1];Yu, Guangsuo[1];Liu, Haifeng[1];Wang, Fuchen[1];Fan Maohong[3,4,5]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China;[2]China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100080, Peoples R China;[3]Univ Wyoming, Sch Energy Resources, Dept Chem Engn, Laramie, WY 82071 USA;[4]Univ Wyoming, Dept Petr Engn, Sch Energy Resources, Laramie, WY 82071 USA;[5]Georgia Inst Technol, Sch Civil & Environm Engn, Atlanta, GA 30332 USA

会议论文集：9th International Freiberg Conference on IGCC and XtL Technologies (IFC) - Closing the Carbon Cycle

会议日期：JUN 03-08, 2018

会议地点：Berlin, GERMANY

语种：英文

外文关键词：Calcium-based additives; Biomass ash; Coal char; Catalytic hydrogasification; Behavior

摘要：Three rich-alkalis biomasses ashes, wheat straw ash (WSA), sea grape ash (SGA) and Ixeris Chinese ash (ICA) and calcium-based additives, were applied in char hydrogasification. Hydrogasification behavior of coal and biomass ash and saturated loading and loading methods of calcium-based additives were investigated. The loading calcium-based additives has affected on the methane release curves of SFC hydrogasification. The total amount of gaseous products and the CH4 yield were obviously improved with the increase of the CaO loading. Hydrogasification of SF char with the 6% calcium-based loading presented the highest methane yield. SFC hydrogasification was divided into two stages according to the methane release rate curve of the calcium-based additives-loaded samples hydrogasification. The carbon and hydrogen reaction occurred in the second stage of coal hydrogasification. The calcium-based additives have effects on catalytic performance of three rich-alkalis biomass ashes for hydrogasification characteristics of Shenfu coal char. Loading methods of calcium-based additives and component of biomass ashes affected on the total CH4 yield and the total amount of gaseous products of samples. Calcium-based additives emerged obviously synergistic reaction with WSA or SGA during char hydrogasification. Calcium-based additives reacted with Si of biomass ashes and produce more stable calcium silicate in the early stage of reaction. The promotion of biomass ashes on char hydrogasification mainly was attributed to the fixation of Si and Cl by CaO.