气相法聚乙烯工艺技术及其催化剂进展

气相法工艺制备聚乙烯是当今聚乙烯工业的主要发展趋势.介绍了冷凝及超冷凝技术、不造粒技术、共聚技术、原位技术、反应器新配置、双峰技术、激光催化等聚乙烯生产新技术的开发应用情况,以及用于乙烯气相聚合的铬基催化剂、齐格勒-纳塔催化剂、茂金属催化剂等催化剂的发展历程和现状.

Progress of gas-phase polyethylene technique and catalyst

The gas-phase process for synthesizing polyethylene(PE) has become a main development tendency in the ethylene polymerization industry.The development and application progress of PE production processes including the technologies of condensing and super-condensing,non-granulating,copolymerization,in situ copolymerization,reactor rearranging,bimodal PE and laser catalysis were introduced.The progress of catalysts applied to in gas-phase PE were also summarized such as Cr catalyst,Ziegler-Natta catalyst and metallocene catalyst.