Two distinctive process sections can be identified in polyolefin production, a Wet-end and a dryend process.
Wet-End Process
The wet-end process for the manufacturing of polyolefins can be high pressure (autoclave and tubular) or low pressure (slurry, solution or gas phase). It includes:
Feed preparation
Catalyst handling
Polymerization reaction
Diluent recovery
Polymer separation, where the polymer is cleaned and dried.