Patent ID: 8636831
Filing Date: 2014-01-28
Classification: C08F,C08J

Abstract:
1. A process for the recovery of unreacted monomers from a slurry polymerization process comprising: (a) recovering a fluid stream from a polymer slurry comprising essentially liquid diluent, unreacted monomer, comonomers and solid polyolefin particles, by separating at least a majority of the diluent and unreacted monomer and comonomers from said polyolefin solid particles; (b) distilling said fluid stream, and withdrawing from said distillation a bottom stream comprising C (c) distilling said overhead stream and withdrawing (i) a bottom stream comprising substantially olefin-free hydrocarbon diluent, optionally a side stream comprising hydrocarbon diluent, and (ii) an overhead vapor stream comprising unreacted monomer and light gas; (d) contacting said removed overhead vapor stream in a gas-liquid absorption zone with a scrub liquid comprising at least one C (e) withdrawing from said absorption zone (i) a vapor overhead and (ii) an absorber bottoms scrub liquid comprising said C