Process for treating a temperature-sensitive hydrocarbonaceous s

Details Process for treating a temperature-sensitive hydrocarbonaceous s Process for treating a temperature-sensitive hydrocarbonaceous s

1988-08-15

1989-11-21

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With preliminary treatment of feed

208 89, 208 94, 208143, 208144, 208177, 208179, 208185, 2082621, 2082625, C10G 4900, C10G 6504

Patent

active

048820377

ABSTRACT:
A process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component and a distillable, hydrogenatable hydrocarbonaceous fraction to produce a selected hydrogenated distillable light hydrocarbonaceous product, a distillable heavy hydrocarbonaceous liquid product and a heavy product comprising the non-distillable component while minimizing thermal degradation of the temperature-sensitive hydrocarbonaceous stream which process comprises the steps of: (a) contacting the temperature-sensitive hydrocarbonaceous stream with a hot first hydrogen-rich gaseous stream having a temperature greater than the hydrocarbonaceous stream in a flash zone at flash conditions thereby increasing the temperature of the hydrocarbonaceous stream and vaporizing at least a portion thereof to provide a first hydrocarbonaceous vapor stream comprising hydrogen and a first heavy product stream comprising the non-distillable component; (b) condensing at least a protion of the first hydrocarbonaceous vapor stream to provide a distillable heavy hydrocarbonaceous liquid stream and a second hydrocarbonaceous vapor stream comprising hydrogen and the hydrogenatable, hydrocarbonaceous fraction; (c) contacting the second hydrocarbonaceous vapor stream comprising hydrogen from step (b) with a hydrogenation catalyst in a hydrogenation reaction zone at hydrogenation conditions to increase the hydrogen content of the hydrogenatable hydrocarbonaceous fraction introduced into the hydrogenation reaction zone; (d) condensing at least a portion of the resulting effluent from the hydrogenation zone to provide a second hydrogen-rich gaseous stream and a liquid stream comprising hydrogenated distillable hydrocarbonaceous compounds; and (e) recovering the selected hydrogenated distillable light hydrocarbonaceous product from the liquid stream comprising hydrogenated distilable hydrocarbonaceous compounds.

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