Patent ID: 9238182
Filing Date: 2016-01-19
CPC Classification: B01D,C07C,C08J

Claim Text:
1. A polymerization system for preparing bimodal polyolefin comprising two different polymerisation reactors connected to each other in series operably connected to a distillation system, the distillation system comprising: a first distillation column and a second distillation column which are operably connected to each other in series; and wherein said first distillation column is configured to separate a hydrocarbon-containing feed stream comprising olefin monomer, optionally one or more co-monomer and hydrocarbon diluent, into: a bottom stream comprising hydrocarbon diluent and one or more optional co-monomer, and an overhead stream comprising hydrocarbon diluent, olefin monomer and components selected from H at least one first condenser for condensing said overhead stream from the first distillation column to form a condensed stream and at least one first separator, operably connected to said first condenser and adapted to separate said condensed stream in a vapor stream and a liquid stream; and wherein said second distillation column is configured to separate a hydrocarbon-containing feed stream comprising olefin monomer, optionally one or more co-monomer and hydrocarbon diluent, into: a bottom stream comprising substantially olefin-free hydrocarbon diluent, a substantially hydrogen-free side stream comprising hydrocarbon diluent and olefin monomer, and an overhead stream comprising olefin monomer, hydrocarbon diluent and components selected from formaldehyde, H