| 摘要 |
A temperature-sensitive hydrocarbonaceous feed stream containing a non-distillable component and a distillable, hydrogenatable hydrocarbonaceous fraction is treated 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 feed stream by: (a) contacting the feed stream with a hot first hydrogen-rich gaseous stream in a flash zone at flash conditions thereby vaporizing at least a portion thereof to provide a first hydrocarbonaceous vapor stream and the heavy product stream comprising the non-distillable component; (b) condensing at least a portion of the first hydrocarbonaceous vapor stream to provide the distillable heavy hydrocarbonaceous product stream and a second hydrocarbonaceous vapor stream; (c) contacting the second hydrocarbonaceous vapor stream with a hydrogenation catalyst in a hydrogenation reaction zone at hydrogenation conditions; (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 distillable hydrocarbonaceous compounds liquid stream produced in step (d). |
