Patent ID: 11952544
Assignee: NESTE OYJ
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A method for processing liquefied waste polymers (LWP), the method comprising the following steps:
a) providing a LWP stream containing diolefins and naphtha;
b) subjecting the LWP stream to hydrotreatment reaction conditions in a presence of hydrogen and one or more hydrotreatment catalyst to produce diolefin depleted LWP stream, wherein the hydrotreatment reaction conditions include temperature 120-210° C. and pressure 1-50 barg;
c) distilling the diolefin depleted LWP stream to obtain one or more distillates including at least a naphtha fraction boiling below 180° C. at atmospheric pressure and a distillation bottom; and
d) subjecting the naphtha fraction of step c) to hydroprocessing reaction conditions in a presence of hydrogen and one or more hydroprocessing catalysts to produce hydrogenated naphtha.