Patent ID: 6533922
Filing Date: 2003-03-18
Classification: C10G

Abstract:
A process for decreasing fouling in refinery units wherein said refinery unit reactor zone is run at temperatures of at least about 300Â° C. and wherein a feed experiences heating in said refinery unit reaction zone, the process comprising pre-heating said feed to said refinery unit reactor zone and thereafter introducing said feed into said refinery unit reactor zone for reaction, wherein said feed contains polymers and oligomers, and wherein said feed is pre-heated for a time and at a temperature sufficient such that when said feed is introduced into said refinery unit reaction zone for reaction, the combination of said pre-heating and heating attributable to said reaction zone causes at least 85% of said polymers and oligomers contained in said feed to unzip and wherein no more than about 5 wt. % coke is formed in said feed during said preheating step.