文献类型：期刊文献

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] Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, China; [2] School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100080, China; [3] School of Energy Resources, Department of Chemical Eng, University of Wyoming, Laramie, WY, 82071, United States; [4] School of Energy Resources, Department of Petroleum Eng, University of Wyoming, Laramie, WY, 82071, United States; [5] School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, United States

年份：2019

卷号：249

起止页码：103

外文期刊名：Fuel

收录：EI(收录号：20191306690564)

语种：英文

外文关键词：Coal - Methane - Loading - Silicon - Biomass - Calcium silicate - Silicates

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. ? 2019 Elsevier Ltd