摘要
分析了造成间歇本体法聚丙烯(PP)生产过程中丙烯单耗高的原因,提出了用变压吸附工艺回收不凝气,用连续氮气汽提置换闪蒸釜的工艺设想,初步研究和实践证明,采用连续汽提置换工艺可将闪蒸釜氮气置换过程排出的气体全部排入气柜回收处理,变压吸附工艺处理后的净化氮气中丙烯体积分数约1%,该技术预计可使间歇本体法PP装置每吨PP的丙烯单耗低于1.010 kg。
The authors analyzed the reason for high propylene monomer consumption in a batch bulk polypropylene（PP） plant, and proposed an innovation for recovering noncondensable gas with pressure swing adsorption（PSA） and purging the gas displaced by continuously stripping nitrogen in the flash kettle into the gas holder. The trial operation proves that the continuously stripping process can put the replaced gas into the gas holder for recycling completely. The average content of propylene in purified nitrogen after PSA is approximately 1%. The propylene monomer consumption per ton of PP is expected to be lower than 1.010 kg with using the technology in the batch bulk PP plant.
出处
《合成树脂及塑料》
CAS
北大核心
2011年第2期35-38,共4页
China Synthetic Resin and Plastics
关键词
聚丙烯
单耗
变压吸附
氮气置换
polypropylene
monomer consumption
pressure swing adsorption
nitrogen replacement
