Patent ID: 6590002
Filing Date: 2003-07-08
Classification: B01J,C10G

Abstract:
A slurry hydrocarbon synthesis process for forming hydrocarbons comprising(a) contacting a synthesis gas comprising a mixture of H2 and CO with a solid particulate hydrocarbon synthesis catalyst in a hydrocarbon synthesis slurry comprising said catalyst and a hydrocarbon liquid in a synthesis zone under reaction conditions which include a first reaction temperature effective to form said hydrocarbon liquid from said synthesis gas, at least a portion of which is liquid hydrocarbon wax; (b) introducing a portion of said hydrocarbon synthesis slurry into a treatment zone external to said synthesis zone; (c) introducing a hydrogen-containing treatment gas into said treatment zone wherein said treatment gas contacts said portion of said hydrocarbon synthesis slurry under reaction conditions which include a second reaction temperature to form a treated slurry comprising treated catalyst particles and treated liquid wax; and, (d) contacting said treated slurry with wax withdrawal means to separate at least a portion of said treated liquid wax from said treated slurry.