Patent ID: 8680219

Claim:
A system for treating a polymerization reactor effluent stream from a polymerization reactor comprising: the polymerization reactor effluent stream, wherein the polymerization reactor effluent stream is fed from the polymerization reactor to a flash chamber; a polymer product stream, wherein the polymer product stream is recovered from the flash chamber; a flash gas stream, wherein the flash gas stream is fed from the flash chamber to a first column; a first column bottom stream, wherein the first column bottom stream is recovered from the first column; a first column side stream, wherein the first column side stream is fed from the first column to the polymerization reactor such that the concentration of hexene in the polymerization reactor is controlled, at least in part, by the first column side stream, and wherein the first column side stream substantially comprises hexene; and a first column overhead stream, wherein the first column overhead stream is recovered from the first column.