文献类型：期刊文献

英文题名：A Study on the Hydrotreating of Coal Hydroliquefaction Residue and its Kinetics

作者：Huang, Jue[1];Lu, Xilan[1];Zhang, Dexiang[1];Gao, Jinsheng[1]

机构：[1]E China Univ Sci & Technol, Dept Chem Engn Energy Resources, Shanghai 200237, Peoples R China

年份：2010

卷号：3

期号：9

起止页码：1576

外文期刊名：ENERGIES

收录：;EI(收录号：20104313330298);WOS:【SCI-EXPANDED(收录号:WOS:000282224900002)】；

基金：This study was supported by Chinese National Programs for High Technology Research and Development (863 Program, 2006AA05Z314), National Basic Research Program of China (973 Program, 2011CB201304) and Shanghai Leading Academic Discipline Project (B506).

语种：英文

外文关键词：coal hydroliquefaction; residue; hydro-conversion; kinetics; recycle

摘要：Hydro-conversion of coal hydroliquefaction residue obtained from a 6t/day pilot plant of Shenhua Group in Shanghai was carried out under the hydrotreating condition. The coal hydroliquefaction residue and its product were extracted in sequence with n-hexane, toluene and tetrahydrofuran in a Soxhlet apparatus. The n-hexane soluble fractions increased with the increase of reaction temperature and time. Its amount increased from 14.14% to a maximum of 40.86% under the conditions of 470 degrees C and 30 min, which meant that moderate extension of coal residence time in the coal hydroliquefaction reactor is beneficial to the increase of oil yield. A 4-lumped kinetic model of coal hydroliquefaction residue hydro-conversion was performed using solubility-based lumped fractions. In the model, the tetrahydrofuran insoluble fractions were classified into two parts: easily reactive part and unreactive part. The kinetic parameters were estimated by a fourth-order Runge-Kutta method and a nonlinear least squares method, and the apparent activation energies were calculated according to the Arrhenius Equation. A large quantity of total catalyst consisting of remained liquefaction catalyst, part of the mineral from raw coal and additive Fe-based catalyst could considerably reduce the apparent activation energy of hydro-conversion for the toluene insoluble/tetrahydrofuran insoluble fractions to 36.79 kJ center dot mol(-1). The calculated values of the model coincided well with the experimental values.