改造循环丙烯系统提高管材树脂产品质量  

Modification to circulating propylene system to improve quality of PP-R for pipes

作　　者：张向莉[1] 成卫戍[1] 

机构地区：[1]中国石油化工股份有限公司北京燕山分公司化工二厂,北京102500

出　　处：《合成树脂及塑料》2009年第4期48-51,共4页China Synthetic Resin and Plastics

摘　　要：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,由于无规物含量高,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品优级品率比改造前增加14.33%,优级品加一级品率增加17.35%。It mainly produces speciality resin for pipes in 40 kt/a polypropylene plant of Beijing Yanshan Company, SINOPEC. Quality of pipes made from PP-R4220 was affected by high content of random polymer resulting in slurry pasted on the wall and then fluctuation of pipe flow especially circulating propylene system. Modifications including adding by-line for pipeline of circulating propylene system and increasing inlet tubing diameter of propylene pump, etc. were made to stabilize flow of circulating propylene with the result that top grade and above first grade ratio increased 14.33% and 17.35%, respectively.

关 键 词：聚丙烯 循环丙烯系统 流量 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]