变压吸附回收本体法聚丙烯装置尾气中的丙烯  

Recovery of Propylene from Off-Gas of Bulk Polypropylene Plants By Pressure Swing Adsorption

作　　者：朱志敏[1] 鞠晓东[1] 赵小松[1] 刘伟[1] 刘晓勤[1] 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009

出　　处：《石油化工》2013年第5期528-532,共5页Petrochemical Technology

基　　金：江苏省高校自然科学重大基础研究项目(08KJA530001)

摘　　要：使用NJ型载铜吸附剂,以丙烯-丙烷-氮气为原料气,对变压吸附法回收本体丙烯聚合装置尾气中的丙烯进行了研究。测定了丙烯、丙烷、氮气3种单组分气体在NJ型载铜吸附剂上的吸附平衡,考察了不同压力、停留时间和顺放过程对丙烯吸附性能的影响。实验结果表明,在吸附压力为0.6 MPa、停留时间为2.4 min的条件下,丙烯、丙烷在NJ型载铜吸附剂上的分离系数为1.72;三塔循环变压吸附结果表明,在常温下NJ型载铜吸附剂具有稳定的变压吸附性能,丙烯回收率大于96%,纯度大于88%(φ)。Recovering propylene from the off-gas（C3H6/C3H8/N2 ternary system） of polypropylene plants by pressure swing adsorption（PSA） with NJ adsorbent which was loaded with cuprous cation was studied. The static adsorption equilibrium of the C3H6/C3H8/N2 ternary system on the NJ adsorbent was measured. The effects of different pressure, residence time and overhead process on the dynamic adsorption to propylene were investigated. The results show that the separation factor of propylene and propane is 1.72 under the conditions of residence time 2.4 rain and adsorption pressure 0.6 MPa. The experimental results of PSA with three-column showed that the NJ adsorbent had good PSA performance at room temperature, the recovery of propylene reached more than 96% with the purity of more than 88%（φ）.

关 键 词：丙烯 丙烷 变压吸附 吸附分离 聚丙烯 

分 类 号：TQ028.1[化学工程]