文献类型：会议论文

英文题名：Alkylation Kinetics of Isobutane by C4 Olefins Using Sulfuric Acid as Catalyst

作者：Sun, Weizhen[1];Shi, Yi[1];Chen, Jie[1];Xi, Zhenhao[1];Zhao, Ling[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

会议论文集：3rd North American Symposium on Chemical Reaction Engineering (NASCRE)

会议日期：MAR 17-20, 2013

会议地点：Houston, TX

语种：英文

摘要：The alkylation kinetics of isobutane with butene using sulfuric acid as catalyst was investigated by batch experiments in the conditions of industrial interest. More than 16 alkylates were identified and quantified by GC-MS. On the basis of the classic carbonium ion mechanism, the kinetic model was established, which can predict the concentration change of three groups of key alkylates including trimethylpentanes (TMPs), undesirable dimethylhexanes (DMHs), and heavy ends (HEs). The agreement between experimental and model calculated data was quite satisfactory. The rate constants were found to be constant with the varied temperatures (276.2 to 285.2 K) except those accounting for the addition of H+ to isobutene and its reversible reaction. An anti-Arrhenius behavior was observed for the addition reaction of H+ to isobutene, in which the corresponding rate constant falls with the increasing temperatures. The kinetic model was confirmed by the simulation of the industrial alkylation reactor. Hopefully, the kinetic model developed in this work will be useful to the design and optimization of novel alkylation reactors.