文献类型：期刊文献

英文题名：Kinetics of Shenhua coal liquefaction catalyzed by SO42 =/ZrO2 solid acid

作者：Shui, Hengfu[1]; Chen, Zhixiong[1]; Wang, Zhicai[1]; Zhang, Dexiang[2]

机构：[1] School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization, Anhui University of Technology, Maanshan, 243002 Anhui Province, China; [2] College of Resource and Environmental Engineering, East China University of Science and Technology, 200273 Shanghai, China

年份：2010

卷号：89

期号：1

起止页码：67

外文期刊名：Fuel

收录：EI(收录号：20094012361398)

语种：英文

外文关键词：Catalysis - Catalysts - Activation energy - Asphaltenes - Coal liquefaction - Coal

摘要：Based on the structural inhomogeneities of coal and intermediate products of coal liquefaction, a new kinetic model was advanced to simulate the Shenhua coal liquefaction catalyzed by SO42 =/ZrO2 solid acid catalyst using kinetic lump method. It was found that coal was hydrocracked to preasphaltene, asphaltene, oil and gas directly, and preasphaltene and asphaltene were further hydrocracked into oil and gas products in coal liquefaction. Certain regressive reactions existed in the process. The liquefaction conversions calculated from the model agreed well with the experimental data for Shenhua coal liquefaction catalyzed by SO42 =/ZrO2 solid acid at the range of experimental conditions, and the activation energies were 69-136 kJ mol-1. There existed obvious regressive reactions at higher liquefaction temperatures. However, besides the regressive transformation of oil and gas to asphaltene at 450 °C liquefaction, there also existed condensation processes of preasphaltene and asphaltene to coke. ? 2009 Elsevier Ltd. All rights reserved.