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Modification to circulating propylene system to improve quality of PP-R for pipes
Pages: 48-51
Year: Issue:  4
Journal: China Synthetic Resin and Plastics

Abstract: 中国石油化工股份有限公司北京燕山分公司40 kt/a聚丙烯装置目前主要生产管材专用树脂.生产无规共聚聚丙烯管材专用树脂PP-R4220时,南于无规物含量高,浆液系统容易挂壁,易造成管道流量波动,尤其是循环丙烯系统流量波动,从而影响管材产品质量.为此,通过增加循环丙烯系统工艺管道副线,加粗该系统丙烯泵入口管道等稳定了循环丙烯流量,使得改造后管材专用树脂产晶优级品率比改造前增加14.33%,优级品加一...
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