摘要
聚α-烯烃(PAO)用于高档润滑油的基础油,以模型为工具建立优化命题并面向质量指标求解是高品质PAO牌号定制的有效手段。基于BF_(3)/C_(2)H_(5)OH催化体系下1-癸烯连续齐聚的稳态模型,分析了工艺条件对产物组成和单体转化率的影响规律,结果表明:反应温度影响聚α-烯烃(PAO)组成和单体转化率;引发剂用量影响单体转化率;反应压力和平均停留时间增大到一定程度后不再影响反应。对比各工艺条件单变量优化与多个工艺条件同步优化,结果显示前者收敛性更好,计算结果更准确,且受初始值影响较小。采用单变量依次优化策略,以单体转化率达到95%和产物中三聚体和四聚体总含量达到80%为目标,得到了最佳工艺条件:反应温度为30℃以及引发剂与单体进料质量比为0.66%。
Poly-α-olefin(PAO)is used as the base oil of high-end lubricants.Using models as tools to solve optimization propositions is an effective means for high-quality PAO grade customization.The steady-state model was used to investigate the effects of reaction temperature,reaction pressure,average residence time and initiator content on the product composition and monomer conversion.The results showed that reaction temperature had a significant effect on PAO composition and monomer conversion,while reaction pressure,average residence time,and content of initiator mainly affected the monomer conversion.The individual optimization of each process condition was easier to converge,more accurate,and less affected by the initial value than the simultaneous optimization of multiple process conditions.In order to meet the goal that monomer conversion of over 95%and target component content(trimer and tetramer)near 80%,the process parameters were optimized.The reaction temperature was adjusted firstly to make the mass fraction of trimer and tetramer meet the requirements,then the reaction pressure,average residence time and content of initiator were adjusted to reach the required conversion.The optimal process conditions were obtained for the reaction temperature of 30℃and the mass ratio of initiator to monomer of 0.66%.
作者
冯黄河
蒋瑜芳
袁诗谣
顾雪萍
冯连芳
褚洪岭
刘通
FENG Huanghe;JIANG Yufang;YUAN Shiyao;GU Xueping;FENG Lianfang;CHU Hongling;LIU Tong(State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China;Institute of ZheJiang 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》
CAS
2021年第4期329-337,共9页
Chemical Reaction Engineering and Technology
基金
国家重点研发计划(2017YFB0306704)。
