8MPa下C307催化剂上甲醇合成反应的本征动力学  

Intrinsic Kinetics of Methanol Synthesis over Catalyst C307 at 8 MPa

作　　者：马宏方[1] 刘殿华[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中心,化学工程联合国家重点实验室,上海200237

出　　处：《华东理工大学学报（自然科学版）》2008年第1期6-9,28,共5页Journal of East China University of Science and Technology

基　　金：国家科技支撑计划课题(2006BAE02B02)

摘　　要：在等温积分反应器中研究了操作条件对甲醇合成反应的影响以及C307催化剂上甲醇合成反应的本征动力学。实验采用粒度为0．154～0．198mm的细颗粒催化剂。实验压力为8MPa，空速5500～11000h^-1，反应温度200～260℃。实验结果表明：总碳转化率在实验温度范围内随温度的升高先增加后降低，245℃左右达到最大值，随压力的升高而增加。选取以各组分逸度表示的CO、CO2加氢合成甲醇的Langmuir-Hinshelwood双速率本征动力学模型，用全局通用算法结合马夸特算法确定动力学模型参数。残差分析和统计检验表明，动力学模型是适宜的。The intrinsic kinetics and effects of operational conditions on methanol synthesis over the C307 catalyst were investigated. The experiment was carried out in an isothermal integral reactor when the size of catalyst is 0. 154-0. 198 mm, pressure is 8 MPa, space velocity ranges from 5 500 h^-1 to 11 000 h^-1 and temperature from 200℃ to 260℃. Experimental results show that the total carbon conversion reaches a maximum value at 245℃ and increases monotonously with the increasing of the pressure. The intrinsic kinetic models of the Langmuir-Hinshelwood are derived from the reaction rates of CO hydrogenation and CO2 hydrogenation in the form of the reactant fugacity. The parameters are estimated by the Universal Global Optimization and Marquardt method. Residual error distribution and statistic test show that the intrinsic kinetic models are reliable and acceptable.

关 键 词：甲醇合成 C307催化剂 本征动力学 

分 类 号：TQ032[化学工程]