PURGE CLEANING COMPOSITION FOR POLYMER REMOVAL IN LOW DENSITY POLYETHYLENE

Abstract: the disclosure provides methods for removing polymeric fouling on process equipment during low density polyethylene manufacture. a purge cleaning composition with ethylene gas containing at least one c3+ hydrocarbon alkene for a period of time is used to remove polymer build-up in at least one location in the polymerization plant, such as, without limitation, the reactor or in tubing between a reactor and a pre-heater or between a cooler and a preheater.

Inventor(s): Allen L. Brown, Nathan D. Brewer, Dominik Wagner, Robin Dursun

CPC Classification: B01J19/002 (Chemical, physical or physico-chemical processes in general; Their relevant apparatus)

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