The polymerization catalyst is the key and core of the ethylene polymerization process,and its quality directly affects the stability of the polymerization reaction.This article mainly studies the application of S-type slurry catalyst in Unipol gas-phase fluidized bed polyethylene process,analyzes and summarizes the advantages and disadvantages of S-type slurry catalyst.The results show that compared with the early A-type slurry catalyst,the S-type slurry catalyst is more stable and controllable in the polymerization reaction,produces higher packing density of resin powder,better flow-ability of powder,and has less fine powder in the powder product.It is more suitable for the high load,long-term stable operation of Unipol gas-phase fluidized bed reactor.
关键词
淤浆催化剂/气相流化床/聚乙烯/Unipol工艺
Key words
slurry catalyst/gas-phase fluidized bed/polyethylene/Unipol process
维普
万方数据