Patent ID: 8835576
Filing Date: 2014-09-16
Classification: B29B,C08F,F25J

Abstract:
1. A process for recovery of hydrocarbons from a polymerization vent gas, the process comprising: (a) reducing a pressure of an ethylene stream from a pressure of greater than or equal to 3.4 MPa to a pressure of less than or equal to about 1.4 MPa to form a reduced pressure ethylene stream; (b) cooling a vent gas comprising a monomer via heat exchange with the reduced pressure ethylene stream to form a first condensate comprising at least a portion of the monomer entrained in a first light gas; (c) recovering the first condensate and the first light gas; (d) separating the first condensate from the first light gas; (e) compressing the reduced pressure ethylene stream to a pressure of greater than or equal to 2.4 MPa; (f) passing the compressed ethylene stream to a polymerization reactor.