Patent ID: 11920094
Assignee: SHELL USA, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method of pretreating a hydrocarbon steam cracker feed, the hydrocarbon steam cracker feed comprising pyrolysis oil from plastic waste and at least one contaminant, the contaminant comprising nitrogen, oxygen, or compounds thereof, the hydrocarbon steam cracker feed further comprising paraffinic hydrocarbons and olefins, the method comprising contacting the feed with a solvent to produce a pretreated feed having a reduced content of fouling components, a reduced content of the at least one contaminant, and a rich solvent having an increased content of the fouling components and the at least one contaminant;
wherein the fouling components comprise polycyclic aromatics, resins, or a mixture thereof and cause fouling in preheat, convection and radiant sections of a steam cracker;
wherein the solvent is selected from the group consisting of furfural, sulfolane, toluene, N-formyl morpholine, N-methylpyrrolidone, tetraethylene glycol, and dimethylsulfoxide.