摘要
以负载在γ－Ａｌ＿２Ｏ＿３上的ＮｉＳＯ＿４为催化剂，在微分反应器中进行了以壬烯与十二烯为目的产物的丙烯液相催化齐聚的研究。在２７３～３１３Ｋ及高于丙烯蒸气压的压力条件下齐聚产物主要为己烯、王烯及十二烯，十五烯以上的含量极少。根据反应的热力学性质可知齐聚反应为一组双分子不可逆反应。按集总原则回归实验数据，得到了丙烯齐聚过程的宏观动力学方程组及有关参数。由于齐聚反应的热效应较大，工业规模的丙烯齐聚只有在壁冷却式列管反应器中才能实现，为此建立了在非绝热非等温列管式反应器中进行丙烯齐聚反应的数学模型。通过模型计算讨论了反应温度、冷却效果及己烯返料对丙烯转化率、壬烯及十二烯选择性的影响。文中所提出的动力学方程组及反应器模型可用于丙烯齐聚反应器的设计及反应器工况的分析与优化。
Oligomerization reaction of liquid propylene is carried out in a differential mi-cro reactor over an NiSO_4 catalyst impregnated on gama-alumina. Under the temperature of273-313K and pressure of higher than the vapour pressure of propylene , the products ofoligomerization are mainly hexene,nonene and dodecane, Olefins higher than pentadecaneare very scarce,According to the thermodynamic properties of the system studied,oligomer-ization reaction of propylene is a set of irreversible bimolecular reaction. Kinetic model andtheir parameters are obtained by means of experimental data regression using lumped princi-ple.They are:Since large heat of reaction,commerical process for propylene oligomerization could berealized only by using nonisothermal nonadiabatic reactors with cooling. A mathmatical mod-el of propylene oligomerization for this kind of reactors is established.The effects of reactor dimension,temperature,cooling condition and backfeed rate of hexene on conversiOn of propylene and selectivities of nonene and dodecane are studied bv model calculation. The re-sults could be used for reactor design and parameter analysis of liquid propylene oligomeriza-tion.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1995年第4期369-377,共9页
Journal of Fuel Chemistry and Technology
基金
中国石化总公司发展部的资助
