化学工程2012，Vol.40Issue(3)：30-34,57,6.
费托合成反应体系的热力学计算与分析
Thermodynamic calculation and analysis of Fischer-Tropsch synthesis system
摘要
Abstract
By using Benson group contribution method and ABWY method, the standard enthalpy of formation, standard entropy and isobaric molar heat capacity of Fischer-Tropsch ( F-T) synthesis products were estimated. The enthalpy change, Gibbs free energy change and equilibrium constant of F-T synthesis reaction system were calculated in detail as a function of temperature. The thermodynamic equilibrium and the limit of different reaction steps were analyzed. The thermodynamic feasibility and formation sequence of alkane, alkene, and oxygen-containing organic compounds were judged. The effects of temperature and mole ratio of H2 to CO on the equilibrium conversion were investigated. The results show that F-T synthesis is an exothermic reaction; most F-T synthesis reactions are spontaneous at low temperature and can reach to a deep extent, while most reactions generating alkane, alkene, alcohol and acid can not go along spontaneously at high temperature ( more than 635 K). The equilibrium conversion increases with the increase of mole ratio of H2 to CO, and decreases with the increase of temperature. The thermodynamic data obtained have important reference value to the study of F-T synthesis process and catalyst development.关键词
费托合成/热力学分析/吉布斯自由能/平衡常数/限度Key words
Fischer-Tropsch synthesis/ thermodynamic analysis/ Gibbs free energy/ equilibrium constant/ limit分类
化学化工引用本文复制引用
吴建民,孙启文,高腾飞,岳建平,庞利峰..费托合成反应体系的热力学计算与分析[J].化学工程,2012,40(3):30-34,57,6.基金项目
国家973计划课题项目(2010CB736203) （2010CB736203）
