Patent ID: 6179995
Filing Date: 2001-01-30
Classification: C10G

Abstract:
An integrated hydroconversion process comprising:a) contacting a residuum feedstock with a hydrogen-rich gaseous stream in a hydrotreating reaction zone to form a hydrotreated liquid product having reduced asphaltene content and a gaseous hydrotreater effluent;b) fractionating the hydrotreated liquid product in a first fractionation zone to recover at least a desulfurized VGO fraction;c) contacting a VGO feed with a gaseous hydrocracker feed stream in a hydrocracking reaction zone, at hydrocracking conditions sufficient to effect a boiling range conversion of the VGO feed, to produce at least the hydrogen-rich gaseous stream and a liquid hydrocrackate;d) passing the hydrogen-rich gaseous stream to the hydrotreating reaction zone for contacting with the residuum feedstock;e) fractionating the liquid hydrocrackate in a second fractionation zone to recover at least a VGO product stream; andf) combining the desulfurized VGO fraction with at least a portion of VGO product stream to form the VGO feed for contacting in the hydrocracking reaction zone.