聚丙烯装置气相反应器顶分离器液排原因分析及优化操作

Analysis on reason of draining at top separator of gas phase reactor in polypropylene unit and operation optimization

针对某聚丙烯装置反应器顶分离器经常需要液排丙烯混合物的问题,通过分析气锁器料封、气锁器加压丙烯阀的开度、产率比、急冷液泵密封冲洗丙烯以及气锁器程序时间的设定对气相反应器顶分离器液位的影响,对装置生产工艺进行了优化操作,使该装置丙烯单耗和生产成本显著降低,年直接经济效益提高了近200万元。

To solve the problem that the separator at the top of gas phase reactor in a certain polypropylene unit often needs to drain propylene-containing mixture,the influences of air lock sealing materials,the opening degree of air lock pressuring propylene valve,the yield ratio,the cooling pump flushing propylene in a closed environment and the time setting of airlock process on the liquid level of the separator at the top of gas phase reactor are analyzed,and hence the production process of the unit is optimized,which results in a significant reduction in the unit consumption of propylene and production costs and increases approximately two million RMB in annual profit.