甲醇芳构化的研究 Ⅰ.反应热力学分析  

Aromatization of Methanol Ⅰ.Reaction Thermodynamics

作　　者：张贵泉[1] 白婷[1] 屈文婷[1] 张巧燕[1] 陈腾飞[1] 张昕[1] 

机构地区：[1]西北大学化工学院,陕西西安710069

出　　处：《石油化工》2013年第2期141-145,共5页Petrochemical Technology

基　　金：教育部新世纪优秀人才支持计划(NCET-10-878);教育部博士点新教师基金(20096101120018);教育部留学回国人员科研启动基金(2009-37);陕西省重大科技专项(2011zkc04-8);陕西省"13115"创新工程重大科技专项(2009ZDKG-70);陕西省教育厅科技专项(09JK793);西北大学科研启动基金(PR09005);西北大学研究生实验资助项目(10YSY08);化工资源利用国家重点实验室开放课题(CRE-2011-C-304)

摘　　要：采用"平衡常数法"计算了甲醇制芳烃各主、副反应在不同温度下的反应热、Gibbs自由能变和热力学平衡常数,并分析了不同反应温度和甲醇分压下甲醇芳构化主反应的热力学平衡组成。热力学计算结果表明,甲醇制芳烃大多数反应为强放热反应,较低的反应温度有助于主反应的进行。反应温度和甲醇分压对甲醇芳构化产物分布具有显著影响:升高反应温度及提高甲醇分压有利于增加芳烃产物中二甲苯的平衡组成;较低反应温度和甲醇分压有利于增加甲苯的平衡组成。The reaction heats, the change of the Gibbs free energies and the change of the equilibrium constants of main and side reactions in the aromatization of methanol were calculated by the equilibrium constant method. And then the thermodynamic equilibrium compositions of the products in the main reactions at different reaction temperatures and methanol partial pressures were estimated. The thermodynamic calculation results indicated that the most of the reactions in the conversion of methanol to aromatics were strong exothermic, so low temperature could promote the main reactions. The effects of temperature and methanol partial pressure on the equilibrium composition of the aromatics products are significant. High temperature and high methanol partial pressure can heighten the content ofxylene in the equilibrium composition, while low temperature and low methanol partial pressure favor the production of toluene.

关 键 词：甲醇芳构化 苯 甲苯 二甲苯 热力学 

分 类 号：TQ241[化学工程—有机化工]