三相床中合成气制二甲醚宏观动力学研究  

Global kinetics of dimethyl ether direct synthesis from syngas in three-phase slurry reactor

作　　者：曹晓路[1] 陈振[1] 张海涛[1] 应卫勇[1] 房鼎业[1] 

机构地区：[1]华东理工大学大型工业反应器工程教育部工程研究中心,化学工程联合国家重点实验室,上海200237

出　　处：《天然气化工—C1化学与化工》2010年第1期6-12,共7页Natural Gas Chemical Industry

基　　金：国家科技支撑计划项目(2006BAE02B02)

摘　　要：在三相高压搅拌釜中,使用XR型复合催化剂,在温度为220℃～260℃,空速为0·75L·g-1·h-1～1·35L·g-1·h-1,压力为3MPa～7MPa,反应进口yH2/yCO为4·01～4·59的范围内,搅拌转速为900r·min-1的条件下,研究了合成气一步法制二甲醚宏观动力学,考察了温度、空速、压力条件的变化对反应性能的影响。选取langmuir双曲型动力学模型,采用遗传算法和单纯形法对宏观动力学模型进行了参数估值,获得动力学模型的参数,统计检验和残差分析证实模型是适宜的。The global kinetics of direct synthesis of dimethyl ether （DME） from syngas was investigated in a high-pressure stirred tank under the conditions of temperature 220℃-260℃, space velocity 0.75L.g^-1.h^-1-1.35 L.g^-1.h^-1, pressure 3MPa-TMPa, molar ratio of H, to CO in the feed gas 4.01-4.59, and stir speed 900r.min-1. The XR dual function catalyst was used. The effects of temperature, space velocity and pressure on the reaction were studied. The hyperbolic kinetic model based on Langmuir＇s theory of adsorption was selected. The genetic algorithm combined with simplex method was utilized to estimate the parameters of the kinetic equations to obtain a global kinetic model. Statistical tests and residual analysis confirmed that the model is appropriate.

关 键 词：合成气 二甲醚 直接合成 XR催化剂 三相床 宏观动力学 

分 类 号：TQ013.2[化学工程]