Total Petrochemicals Research Feluy

Total Research & Technology Feluy

Solvay Polyolefins Europe-belgium

Bernard Van Der Schrick

Eric Damme

Denis Mignon

David Vandewiele

Jiang Bian

Camille Vercruysse

Charles Detrez

A process for separation of a hydrocarbon-containing feed stream can include cooling the hydrocarbon-containing feed stream using an absorption refrigeration cycle to form a cooled feed stream. The cooled feed stream can be subjected to distillation conditions to remove a bottom stream including co-monomer; and an overhead stream including hydrocarbon diluents, olefin monomer, and components selected from H, N, O, CO, CO, and formaldehyde. The overhead stream can be subjected to distillation conditions adapted to remove a bottom stream including substantially olefin-free hydrocarbon diluents; a side stream including hydrocarbon diluent; and an overhead vapor stream including olefin monomer, diluents, and components selected from H, N, O, CO, CO, and formaldehyde. The overhead vapor stream can be cooled using an absorption refrigeration cycle to form a cooled overhead vapor stream. Olefin monomers can be separated from diluents in the cooled overhead vapor stream.

Method for optimizing energy efficiency in a polymerization process

The present relates to a process for optimizing the recovery of unreacted monomers from a polymerization process, wherein said process comprises the steps of The present invention also concerns a process for the recovery of unreacted monomers from a gas phase or slurry polymerization process, and also concerns a process for the production of polyolefins.

Process for monomer recovery from a polymerization process

The present invention relates to a process for recycling product streams that have been separated from a hydrocarbon-containing feed stream comprising olefin monomer, olefin co-monomer, hydrocarbon diluent and components such as H, N, O, CO, CO, and formaldehyde. In accordance with the present process a hydrocarbon-containing feed stream is separated into a) a first side stream comprising hydrocarbon diluent and olefin monomer; b) a second side stream which is substantially hydrogen-free and comprises hydrocarbon diluent and olefin monomer, c) a bottom stream comprising substantially olefin-free hydrocarbon diluent, and d) an overhead vapor stream comprising olefin monomer, hydrocarbon diluent and components such as formaldehyde, H, N, O, CO and CO. The present process further includes recycling said first and said second side streams in a polymerization process for preparing bimodal polyolefin.

System for recycling product streams separated from a hydrocarbon-containing feed stream

Processes for the separation of a hydrocarbon-containing feed streams are described herein. The processes generally include 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 including co-monomer and a first overhead stream including hydrocarbon diluents, olefin monomer and further components selected from H, N, O, CO, CO, formaldehyde and combinations thereof, passing the overhead stream from the first distillation zone to a second distillation zone for subjecting the overhead stream to distillation conditions adapted to remove a second bottom stream including substantially olefin-free hydrocarbon diluents, a side stream including hydrocarbon diluent and a second overhead vapor stream including olefin monomer, diluents and further components selected from H, N, O, CO, CO, 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.

Method for cooling in distillation and polymerisation process by absorption refrigeration

The present invention relates to a process for cooling a polymerization reaction for producing polyolefin comprising the steps of: Said invention also relates to a polymerization process for producing olefin polymers in a reactor, and also relates to a process for energy optimization of energy consumption in a polymerization process and to a polymerization unit.

Process for the polymerization of olefins, in which at least one olef in is placed in contact with a catalytic system comprising:

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Brussels, Belgium

Bernard Van Der Schrick