Combination process for producing high quality metallurgical coke

Claim 1

A process for producing high quality metallurgical coke from a sulfur-containing reduced crude oil which comprises: a. admixing said reduced crude oil with a hydrocarbon recycle stream formed as hereinafter set forth; b. introducing the resulting mixture into a coking zone maintained at coking conditions to produce coke and a hydrocarbon effluent having a reduced level of coke precursors; c. separating the coke from the hydrocarbon effluent and recovering the same; d. introducing the hydrocarbon effluent to a flash zone and therein vaporizing hydrocarbons boiling up to about 400° F.; e. hydrodesulfurizing the remainder of said effluent boiling above about 400° F.; f. fractionating the resultant desulfurized remainder of the hydrocarbon effluent to separate therefrom hydrocarbons boiling up to about 650° F., leaving a desulfurized hydrocarbon bottoms fraction boiling above about 650° F.; and g. supplying at least a portion of said desulfurized bottoms fraction boiling above about 650° F., to step (a) as said hydrocarbon recycle stream for admixture with the reduced crude oil therein.