抗静电剂在茂金属烯烃聚合中的应用

Application of antistatic agents in olefin polymerization catalyzed by metallocene

气相或淤浆聚乙烯反应器在生产运行中,由于摩擦起电、催化剂破碎以及原料中杂质影响等原因会导致静电累积,产生结块现象,影响反应装置的长周期稳定运行,这种现象在茂金属催化体系中尤其严重。在反应体系中外加抗静电剂,是解决结块问题的一种较好方法。介绍了主要聚烯烃生产企业在聚乙烯气相或淤浆工艺中使用抗静电剂以减少结块、提高装置稳定性的方法。

During the polyethylene production by gas-phase or slurry process,the accumulation of static electricity caused by friction electrification,catalyst breakage,inpurities in raw materials often leads to agglomeration,which affects the long-term stable operation of the reactor.This phenomenon is particularly serious when metallocene catalyst is used.Adding antistatic agent to the reaction system is a good method to solve the problem of agglomeration.The methods of using antistatic agent in polyethylene production by gas-phase or slurry process in major polyolefin production enterprises to reduce caking and improve the stability of the unit by major polyolefin production enterprises are briefly introduced.