摘要
采用PC-SAFT状态方程计算乙烯聚合反应体系的物性;运用反应机理分析进行聚合过程建模;利用工业装置采集的数据,从宏观转化率、分子量及分布2个方面对所建模型进行了验证,确定了催化剂活性位为5个;构建了乙烯淤浆聚合工业流程的多活性位动力学动态模型,模拟计算得到的聚合物分子量与工业装置的分析数据十分符合,为牌号切换过程优化提供了基础。
The equation of state of Perturbed-Chain Statistical Associating Fluid Theory is applied to predict thermodynamic properties and phase equilibria of ethylene slurry polymerization system.The reasonable ranges of the kinetic constants of these elementary reactions and their activation energies are determined.According to the molecular weights and molecular weights distribution,the number of active sites for the catalyst is found to be five.Steady and dynamic models of the process are developed with the molecular weight and its distribution as the targets.The dynamic model simulates well grade transition processes.
基金
国家重点基础研究专项经费资助(2005CB623804)
关键词
化工系统工程
模型
牌号过渡
乙烯淤浆聚合
chemical system engineering
model
grade transition
ethylene slurry polymerization
