Patent ID: 9688799
Date: 2017-06-27
CPC Classifications: B01J,C08F,Y02P

Claim:
1. A process for the polymerisation of olefins in a polymerisation reactor system, the polymerisation reactor system comprising: (i) a gas phase reactor having a gas outlet and one or more withdrawal lines for withdrawal of a polymer-containing stream, (ii) a recycle loop for recycling gas exiting the reactor through the gas outlet back to the reactor, (iii) a polymer separation system for separating reactants from the polymer product in the withdrawn polymer-containing stream, and (iv) a recycle system for recycling reactants removed from the reactor in the withdrawn polymer-containing stream back to the reactor, the process comprising introducing a scavenger directly into one or more of the recycle loop, the polymer separation system and the recycle system and into or upstream of a vessel or other equipment which is in the recycle loop, in the polymer separation system or in the recycle system and in which liquid may accumulate during polymerisation.