Patent ID: 9540467
Date: 2017-01-10
CPC Classifications: C08F

Claim:
1. A process for the introduction of a fresh feed selected from fresh comonomer and fresh inert hydrocarbon to a polymerisation reactor wherein the polymerisation reactor is part of a polymerisation process comprising high and low pressure recovery systems, said high pressure recovery system being at a pressure of 0.5 MPa (5 bar) or above and said low pressure recovery system being at a pressure of less than 0.5 MPa (5 bar), which process comprises passing said fresh feed and a process stream comprising a first component selected from hydrogen, nitrogen and methane and a second component which is a monomer to a separator which is part of the low pressure recovery system and is at a pressure of 0.4 MPa or less to produce a first stream comprising the majority of the first component and a second stream comprising the second component and the majority of the fresh feed, and passing the second stream to the polymerisation reactor.