文献类型：期刊文献

英文题名：Effect of mechanochemical treatment on petroleum coke-CO₂ gasification

作者：Zou, Jianhui[1];Yang, Boli[1];Gong, Kaifeng[1];Wu, Shiyong[2];Zhou, Zhijie[1];Wang, Fuchen[1];Yu, Zunhong[1]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem Engn Energy Resources, Shanghai 200237, Peoples R China

年份：2008

卷号：87

期号：6

起止页码：622

外文期刊名：FUEL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000253894800003)】；

语种：英文

外文关键词：petroleum coke; gasification; grinding; X-ray diffraction; crystal structure

摘要：The effect of mechanochemical treatment during the grinding of petroleum coke on its gasification by CO2 was studied. An additive derived by drying the black liquor in papermaking industry is adopted in grinding process. Results show that the gasification reactivity of petroleum coke is effectively improved by grinding, and the activation by wet grinding is more noticeable than that by dry grinding. Besides, by wet grinding petroleum coke and additive together, the active metal species in additive are not easily volatilized in gasification, and retain a high catalytic reactivity to the coke-CO2 reaction throughout most of the conversion range. Changes in crystal structure of the petroleum coke induced by mechanochemical treatment is related to its gasification reactivity. In general, the crystalline-amorphous phase transition is the tendency of long time mechanical grinding, while a crystal structure re-formation stage is observed after wet grinding of petroleum coke with and without additive for some time. Similar phenomenon has also been found in the reported data, but not given attention. Some discussion is made in the paper, and more work should be undertaken to disclose the mechanism. (C) 2007 Elsevier Ltd. All rights reserved.