英力士淤浆工艺聚乙烯装置低压系统凝胶原因分析及对策

Analysis on causes for generation of gel resins in low-pressure solvent recovery system in INEOS HDPE slurry process and suggestion on countermeasure

在英力士淤浆环管工艺生产钛系双峰聚乙烯产品期间,低压溶剂回收系统产生黄色凝胶物质,极难清理且影响装置的长周期生产。通过与国内同类装置工艺运行条件比对、样品元素分析,改变了生产期间催化剂配置流程,调整了低压溶剂回收温度,进而消除了凝胶产生。

When titanium-series bimodal high-density polyethylene(HDPE)is produced in Innovene slurry loop process,many gel resins may be generated in the low-pressure solvent recovery system,which is difficult to be cleaned and will have impact on the operation period of the plant.Through comparing with the process operating parameters of the same plants in China and analyzing the elements in gel sample,the catalyst configuration process during production is changed and the temperature for low-pressure solvent recovery system is adjusted,hence the gel does not generate again.