摘要
聚α-烯烃(PAO)基础油制备的高档润滑油,具有黏度指数高、倾点低和抗剪切性能优越等特点。以BF3/C2H5OH催化体系下的1-癸烯两釜连续齐聚过程为研究对象,考虑了引发剂BF3与助催化剂C2H5OH的络合平衡反应、聚合度小于5的低聚物非等活性链增长、向单体链转移、向β-H链转移以及催化剂失活等基元反应,建立了齐聚过程的数学模型。根据第一反应釜出口流股的工厂数据确定了各基元反应的动力学常数及反应活化能,并利用第二反应釜出口流股C30/C40质量分数、单体转化率、数均分子量、重均分子量的工厂数据对模型进行了验证。结果表明:所建立的模型能准确地计算不同工艺条件下的齐聚过程的转化率和分子量,相对误差在5%以内。
High-quality lubricants prepared from poly-alpha-olefins(PAO)are characterized by some performances such as high viscosity index,low-temperature mobility and superior anti-shear properties.A model of continuous oligomerization of 1-decene in two reactors with BF3/C2H5OH as catalyst was established,based on the elementary reactions that include the complexation equilibrium of BF3 with C2H5OH,the unequal activity chain growth reactions with polymerization degree less than 5,chain transfer to monomer,chain transfer toβ-H chain and deactivation of catalyst.The kinetic constants and reaction activation energies of the elementary reactions were determined by the plant data of the outlet stream from the first reactor.And the model was validated with the plant data of C30/C40 mass fraction,monomer conversion number-average molecular weight,and weight-average molecular weight of the outlet stream from the second reactor.It was demonstrated that the established model could accurately calculate monomer conversion and product molecular weight in the oligomerization process of 1-decene under different process conditions with a relative error within 5%.
作者
顾雪萍
袁诗谣
冯黄河
冯连芳
褚洪岭
张才亮
刘通
GU Xueping;YUAN Shiyao;FENG Huanghe;FENG Lianfang;CHU Hongling;ZHANG Cailiang;LIU Tong(State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China;Institute of Zhe j iang University-Quzhou,Quzhou 324000,China;Daqing Petrochemical Research Center of Petrochina,Daqing 163714,China)
出处
《化学反应工程与工艺》
2021年第1期30-38,共9页
Chemical Reaction Engineering and Technology
基金
国家重点研发计划(2017YFB0306704)。
