Unipol工艺聚乙烯反应器模拟与应用分析

Simulation and Application Analysis of Unipol Process Polyethylene Reactor

利用流程模拟软件建立全密度聚乙烯装置的稳态模型,使用单活性中心模型和多活性中心模型描述了Unipol工艺聚乙烯的动力学反应,反应系统模型的计算结果与装置实际牌号数据吻合。在此基础上,利用软件的设计规范和灵敏度分析工具,在反应系统现有的进料条件下,分析了催化剂进料量、循环气中C_(4)H_(8)与C_(2)H_(4)物质的量之比及H_(2)与C_(2)H_(4)物质的量之比对聚合产品的影响。计算结果可应用于实际的工艺生产过程中。

Using process simulation software to establish a steady-state model of full-density polyethylene plant,the single active center model and multiple active center model were used to describe the kinetic reaction of Unipol process polyethylene,and the calculated results of the reaction system model were consistent with the actual brand data of the device.On this basis,the effects of catalyst feed amount,molar ratio of C_(4)H_(8)to C_(2)H_(4)and molar ratio of H_(2)to C_(2)H_(4)in the circulating gas on the polymerization product were analyzed by using the software design specifications and sensitivity analysis tools under the current feed conditions of the reaction system.The calculation results can be applied to actual production processes.