Patent ID: 8642827

Claim:
A process for the separation of a hydrocarbon-containing feed stream comprising: cooling the hydrocarbon-containing feed stream using a first absorption refrigeration cycle to form a cooled feed stream; introducing the cooled feed stream into a first distillation zone for subjecting the cooled feed stream to distillation conditions adapted to remove a first bottom stream comprising co-monomer and a first overhead stream comprising hydrocarbon diluents, olefin monomer and further components selected from H 2 , N 2 , O 2 , CO, CO 2 , formaldehyde and combinations thereof; passing the first overhead stream from the first distillation zone to a second distillation zone for subjecting the first overhead stream to distillation conditions adapted to remove a second bottom stream comprising substantially olefin-free hydrocarbon diluents, a side stream comprising hydrocarbon diluent and a second overhead vapor stream comprising olefin monomer, diluents and further components selected from H 2 , N 2 , O 2 , CO, CO 2 , formaldehyde and combinations thereof; cooling the second overhead vapor stream using a second absorption refrigeration cycle to form a cooled overhead vapor stream; and separating olefin monomer from diluents in the cooled overhead vapor stream.