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(1)形成了溶剂法、液相本体-气相法、间歇式液相本体法、气相法等多种生产工艺并举,大中小型生产规模共存,引进技术与国产技术相结合的格局。(2)投资主体多元化。近几年,由于外资、台资以及民营资本的介入,打破了我国聚丙烯产业由中国石化、中石油一统天下格局,形成了以中国石化、中国石油为主体,中国海洋石油总公司、民营合资企业及煤化工企业为辅的竞争格局,生产主体正在朝着多元化方向发展。(3)生产规模逐渐扩大,生产集中度逐渐提高。与以前小规模的一窝蜂投资方式明显不同,在新建聚丙烯装置中,无论是国有资本、民营资本还是外来资本,各投资主体都选择了规模化、技术化的投资策略,年产规模大多在30.0万t以上,大大增强了我国聚丙烯的装置经
(1) The formation of solvent, liquid bulk - gas phase, batch liquid phase bulk method, gas phase and other production processes simultaneously, large and small scale production scale coexistence, the introduction of technology and domestic technology combined pattern. (2) Diversified investors. In recent years, due to the involvement of foreign capital, Taiwanese capital and private capital, China’s polypropylene industry has broken the unification of the world by Sinopec and PetroChina. China Petrochemical and PetroChina as the main players, CNOOC and private joint ventures And coal chemical industry, supplemented by the competitive landscape, the main body of production is moving in a diversified direction. (3) The scale of production gradually expanded, and the concentration of production gradually increased. With the previous small-scale swarm investment is obviously different, in the new polypropylene plant, whether state-owned capital, private capital or foreign capital, the main investors have chosen large-scale, technology-based investment strategy, with an annual output scale of mostly 30.0 Ten thousand tons or more, greatly enhanced China’s polypropylene plant by