摘要
在200~300℃、液时空速1~40h-1、压力3MPa以及氢/油体积比300的条件下,采用Ni-W催化剂在固定床反应器中对低温费-托合成低温冷凝物（L-LC）加氢精制的集总动力学进行研究。将L-LC加氢精制反应体系划分为5个集总,构建了反应网络和动力学模型。依据实验数据计算动力学参数,得到其中正构烯烃加氢生成正构烷烃、正构烯烃异构化、异构烯烃加氢生成异构烷烃和异构烷烃生成正构烷烃反应的表观活化能分别为77.247、9.570、58.692、35.150kJ/mol。实验数据与该模型计算结果吻合,检验了该模型的准确性。利用模型讨论了烷烃异构化反应的平衡组成、中间产物的动力学规律和各集总组分反应速率的变化。
The lumped kinetics study on the hydrofining of low temperature condensate from low temperature Fischer-Tropsch synthesis（L-LC） over Ni-W catalyst was carried out in a fixed bed reactor under the conditions of temperature 200- 300℃, pressure 3 MPa, liquid hourly space velocity 0. 025-- 1 h and H2/Oil volume ratio 300. Five lumps for the L-LC hydrofining system were divided by the lumped method, then the reaction network and kinetics model were established, by which the kinetic parameters of the L-LC hydrofining were obtained. Apparent activation energies of alkene hydrogenation to alkane, alkene isomerization, isoalkene hydrogenation to isoalkane and isoalkane to alkane were 77. 247, 9. 570, 58.692, 35. 150 kJ/mol, respectively. The calculated results of the model could fit well with experimental data, meaning that the established model possessed good accuracy. The equilibrium compositions of alkane isomerization, kinetic law of intermediate products and reaction rate variations of lumped components in L-LC hydrofining were discussed.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2014年第4期701-706,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
国家高技术研究发展计划(863计划)项目(2011AA05A204)资助
