摘要
简述了PVC汽提技术的原理及开发进展,并针对汽提塔所存在的问题与不足,对PVC浆料汽提技术进行了创新,开发出折流式导向筛板塔,处理后残存的VCM质量分数由原来的50×10-6降低到<10-6,生产1 t PVC蒸汽消耗由0.4 t降低到0.12 t,且投产后3年以上不需拆塔清洗。
The mechanism and development of stripping technology is briefly introduced. To solve the existing problems and the deficiency of traditional stripper,a new kind of flow-guided sieve tray with baffle plate is presented in this study. Using this flow-guided sieve tray, the content of residual VCM can be decreased from 50ppm to 1 ppm and the consumption of steam is reduced from 0. 4 t to 0. 12 t. Moreover, the tower doesn＇ t need cleaning within 3 years.
出处
《现代化工》
CAS
CSCD
北大核心
2015年第9期128-130,132,共4页
Modern Chemical Industry
基金
国家"973"计划(2013CB733603)
关键词
聚氯乙烯
PVC
VCM
汽提
折流式导向筛板
polyvinyl chloride
PVC
VCM
stripping
flow-guided sieve tray with baffle plate
