Process for making light hydrocarbonaceous liquids in a delayed coker

摘要

A process for making a light hydrocarbonaceous liquid in a delayed coker comprising: (A) providing a hydrocarbonaceous feed to the coke drum and heating the feed to a temperature of about 800 DEG F. to about 1200 DEG F. to provide an intermediate product; and (B) introducing said intermediate product into the coke drum, operating the coke drum to convert the intermediate product to a final comprising light liquid and coke, and separating the light liquid from the coke; step (A) being conducted in combination with either step (A) (i) or step (A) (ii); Step (A) (i) comprising maintaining the feed during step (A) in an enclosed space and subjecting the feed to a pressure that is at least about 500 psig and is sufficient to maintain the specific gravity of the contents of the enclosed space at least about 0.05 to convert said feed to said intermediate product, the intermediate product containing fractions having a lower boiling point than the initial boiling point of the feed and/or a higher boiling point than the final boiling point of the feed, then reducing the pressure on the intermediate product below about 500 psig prior to step (B); step (A) (ii) comprising contacting the intermediate product from step (A) prior to and/or during step (B) with at least one preheated stripping gas and dissolving at least part of the intermediate product in the stripping gas.