Polyethylene Low Density (LDPE)-Autoclave Reactor

Abstract

Ethylene is compressed to a reaction pressure of 1 500 bar, initiated with air or oxygen and passed to an autoclave reactor. This has an L/D ratio of 10/1. Lower conversions of 15-20 percent per pass at residence terms of 30 seconds to 2 minutes. Molecular weight distributions tailored to specific needs are possible. Separation sequence is similar to the tubular reactor apart from the difference that more ethylene is recycled due to the low conversion.