PROCESS FOR MAKING LIGHT HYDROCARBONACEOUS LIQUIDS IN A DELAYED COKER

摘要

SAM-5123 Title: PROCESS FOR MAKING LIGHT HYDROCARBONACEOUS LIQUIDS IN A DELAYED COKER This invention relates to a process for making a light hydrocarbonaceous liquid in a delayed coker, said delayed coker including at least one cokedrum, the process comprising: (A) providing a hydrocarbonaceous feed for said coke drum and heating said feed to a temperature in the range of about 800.degree.F to about 1200.degree.F to provide an intermediate product; and (B) introducing said intermediate product into said coke drum, operating said coke drum for a sufficient period of time to convert said intermediate product to a final product comprising said light liquid and coke, and separating said light liquid from said coke; step (A) being conducted in combination with either step (A)(i) or step (A)(ii); . step (A)(i) comprising maintaining said feed during step (A) in an enclosed space in the absence of externally supplied water or hydrogen and subjecting said feed to a pressure that is at least about 500 psig and is sufficient to maintain the specific gravity of the contents of said enclosed space at a level of at least about 0.05 for an effective period of time to convert said feed to said intermediate product, said intermediate product containing fractions having a lower boiling point than the initial boiling point of said feed and/or a higher boiling point than the final boiling point of said feed, then reducing the pressure on said intermediate product to a pressure below about 500 psig prior to step (B); step (A)(ii) comprising contacting said intermediate product from step (A) prior to and/or during step (B) with at least one stripping material and dissolving at least part of said intermediate product in said stripping material, said stripping material having been preheated to a temperature of at least about900.degree. and in excess of the temperature to which said feed is heated during step (A), said stripping material being in a gaseous state at said preheated tempera-ture and atmospheric pressure.