工艺特点: (1) 系统中不添加溶剂, 丙烯单体在釜式反应器中液相聚合, 乙烯丙烯在流化床反应器中气相聚合; (2) 简单的过程, 更少的设备, 投资少, 低功耗和生产成本; (3) 聚合反应在釜式搅拌反应器中进行 (海波尔法) 或回路反应器 (球体工艺) Random copolymerization and block copolymerization were carried out in a stirred bed reactor.
The typical representative of adopting liquid-phase bulk method is spherizone liquid-phase bulk method process of Basel company. Spherizone is a gas-phase circulation technology, which uses Ziegler Natta catalyst to produce polymer with high crystallinity, rigidity and homogeneity, while maintaining toughness and processability. It can produce highly uniform multi monomer resin or bimodal homopolymer in a single reactor. There are two interconnected areas in spherizone cycle reaction. Different areas play the role of gas-phase and liquid-phase loop reactor of other processes. These two regions can produce resins with different relative molecular weight or monomer composition distribution, which enlarges the performance range of polypropylene.
