文献类型：期刊文献

英文题名：Modeling reaction kinetics of petroleum coke gasification with CO₂

作者：Zou, Jian Hui; Zhou, Zhi Jie; Wang, Fu Chen; Zhang, Wei; Dai, Zheng Hua; Liu, Hai Feng; Yu, Zun Hong

机构：[1]E China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China

年份：2007

卷号：46

期号：7

起止页码：630

外文期刊名：CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000246059300004)】；

语种：英文

外文关键词：petroleum coke; gasification kinetics model; pressurized TGA

摘要：Kinetics characteristics of petroleum coke gasification with CO2 at 1248-1323 K and 0.1. MPa were studied using a pressurized thermogravimetric analyzer (TGA). It is shown that gasification rate increases with increasing conversion and then decreases after reaching a peak value around x = 0.3. The poor initial porosity is the main reason of the occurrence of maximal gasification rate. A normal distribution function model was proposed to fit the kinetics data. Results show it can describe well the variation of gasification rate at different temperatures. Relationship between the parameter r(m) in the model and temperature T obeys to the Arrhenius law. Activation energy of petroleum coke CO2 gasification is 198 kJ mol(-1) and the reaction order is 0.54-0.88 in the investigated temperature range, which are in accordance with reported data. (c) 2006 Elsevier B.V. All rights reserved.