CFD modeling using heterogeneous reaction kinetics for catalytic dehydrogenation syngas reactions in a fixed-bed reactor  

作　　者：Xiaomin Chen Jiu Dai Zhenghong Luo 

机构地区：[1]Department of Chemical and Biochemical Engineering,College of Chemistry and Chemical Engineering,Xiamen University

出　　处：《Particuology》2013年第6期703-714,共12页颗粒学报（英文版）

基　　金：the National Natural Science Foundation of China(No.21076171);the National Ministry of Science and Technology of China(No.2012CB21500402);the State-Key Laboratory of Chemical Engineering of Tsinghua University(No.SKL-ChE-10A03)for their support

摘　　要：A comprehensive 2D computational fluid dynamics （CFD） model was developed to simulate the flow behavior and catalytic dehydrogenation reaction of syngas in a heterogenous fixed-bed reactor （FBR）. The model combined the porous medium CFD model with a reaction kinetics model. To acquire an accu- rate reaction kinetics model, a comprehensive reaction mechanism was studied for the heterogeneous catalytic dehydrogenation reaction ofsyngas over a supported metal catalyst. Based on the reaction mech- anism and a statistical test, a reliable kinetics model was proposed. The CFD model combined with the above kinetics model was validated with one set of experimental data. The CFD model was also used to predict key reaction variable distributions such as the temperature and the component concentrations in the reactor.A comprehensive 2D computational fluid dynamics （CFD） model was developed to simulate the flow behavior and catalytic dehydrogenation reaction of syngas in a heterogenous fixed-bed reactor （FBR）. The model combined the porous medium CFD model with a reaction kinetics model. To acquire an accu- rate reaction kinetics model, a comprehensive reaction mechanism was studied for the heterogeneous catalytic dehydrogenation reaction ofsyngas over a supported metal catalyst. Based on the reaction mech- anism and a statistical test, a reliable kinetics model was proposed. The CFD model combined with the above kinetics model was validated with one set of experimental data. The CFD model was also used to predict key reaction variable distributions such as the temperature and the component concentrations in the reactor.

关 键 词：Reaction engineering Multiphase reactor Packed bed Kinetics CFD Syngas dehydrogenation 

分 类 号：TE665.3[石油与天然气工程—油气加工工程]