石油化工2011，Vol.40Issue(5)：499-505,7.
甲醇制丙烯反应的热力学研究
Thermodynamic Study on Methanol Conversion to Propylene
吴文章 1郭文瑶 2肖文德 1阎建民 2罗漫2
作者信息
- 1. 华东理工大学国家联合化学工程重点实验室,上海200237
- 2. 上海交通大学化学化工学院,上海200240
- 折叠
摘要
Abstract
Thermodynamic analysis of the methanol to propylene( MTP) process based on ZSM-5 catalysts has been carried out. For each reaction, enthalpy change, Gibbs free energy change and equilibrium constant at varying temperatures were presented. The thermodynamic equilibrium between C2.6 alkenes was analyzed by the method of minimum Gibbs free energy. The results indicated that alkene methylation is exothermic whereas alkene cracking is endothermic; one mole of methanol releases about 30 kJ heat when converted to propylene; alkene methylation is virtually irreversible but alkene cracking is limited by thermodynamic equilibrium. For each methanol partial pressure in MTP, there always exists an optimum temperature at which the propylene content is maximal among the final equilibrium compositions of C2.6 olefins. The maximum propylene mass fraction is close to 40% (w). Higher propylene equilibrium composition can be obtained by using small pore molecular sieves as the catalyst.关键词
甲醇/丙烯/甲醇制丙烯/热力学/烯烃平衡Key words
methanol/ propylene/ methanol to propylene/ thermodynamics/ olefin equilibrium分类
化学化工引用本文复制引用
吴文章,郭文瑶,肖文德,阎建民,罗漫..甲醇制丙烯反应的热力学研究[J].石油化工,2011,40(5):499-505,7.
