文献类型：期刊文献

英文题名：Effect of CS2 extraction on the physical properties and gasification activity of liquid-phase carbonization cokes

作者：Huang, Sheng[1]; Wu, Shiyong[1]; Ping, Yamin[1]; Wu, Youqing[1]; Gao, Jinsheng[1]

机构：[1] Department of Chemical Engineering for Energy Resources, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China

年份：2012

卷号：93

起止页码：33

外文期刊名：Journal of Analytical and Applied Pyrolysis

收录：EI(收录号：20115214637053)

语种：英文

外文关键词：Carbon - Pore structure - Crystalline materials - Gasification - Coal tar - Liquids - Coal carbonization - Coke - Extraction

摘要：Two kinds of liquid-phase carbonization cokes (LPCCs) were prepared using vacuum residue (VR) and coal tar pitch (CTP) at 350-500°C, at which the carbonaceous mesophase appears typically. And the effect of CS2 extraction on the physical properties (carbon crystalline structures, surface morphologies, surface areas and pore structures) and gasification activity of LPCCs were mainly investigated. The increasing carbonization temperature (CT) was favorable for LPCCs to form more ordered carbon crystallite structures, but their graphitization was far from natural graphite. The surface or inner pores of unextracted LPCCs conglutinated a large quantity of CS2-soluble fractions, which severely blocked the pore structure of LPCCs. Although the carbon crystalline structures of LPCCs after extraction were significantly unchanged, the BET surface areas and total pore volumes of extracted LPCCs increased significantly, which resulted in a greatly increasing gasification activity of LPCCs. And a higher extraction yield led to a higher increasing extent of gasification activity of LPCCs after extraction, regardless of precursors (VR and CTP). The soluble fractions conglutinated on the surface or inner pores of LPCCs were the most important factor of affecting on the gasification activity of LPCCs. ? 2011 Elsevier B.V. All rights reserved.