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Combination hydroconversion, fluid coking and gasification

  • US 4,178,227 A
  • Filed: 06/07/1978
  • Issued: 12/11/1979
  • Est. Priority Date: 03/24/1978
  • Status: Expired due to Term
First Claim
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1. A process for upgrading a carbonaceous chargestock, which comprises:

  • (a) adding to said carbonaceous chargestock an oil soluble metal compound of a metal selected from the group consisting of Groups IVB, VB, VIB, VIIB and VIII of the Periodic Table of Elements and mixtures thereof;

    (b) converting said oil soluble metal compound to a solid catalyst within said chargestock in the presence of a hydrogen-containing gas by heating said chargestock to an elevated temperature;

    (c) reacting the chargestock containing said catalyst with hydrogen under hydroconversion conditions, in a hydroconversion zone to produce an upgraded hydrocarbonaceous oil product;

    (d) separating a heavy oil fraction from said hydrocarbonaceous oil product;

    (e) contacting at least a portion of said heavy oil fraction with a bed of fluidized solids maintained in a fluid coking zone under fluid coking conditions to form coke, said coke depositing on said fluidized solids;

    (f) introducing a portion of said solids with a coke deposit thereon into a heating zone operated at a temperature greater than said coking zone temperature to heat said portion of solids;

    (g) recycling a first portion of heated solids from said heating zone to said coking zone;

    (h) introducing a second portion of said heated solids to a fluid bed gasification zone maintained at a temperature greater than the temperature of said heating zone;

    (i) reacting said second portion of heated solids in said gasification zone with steam and a molecular oxygen-containing gas to produce a hot gaseous stream containing hydrogen;

    (j) introducing said hot gaseous stream containing hydrogen and entrained solids into said heating zone;

    (k) recovering from said heating zone the resulting cooled gaseous stream containing hydrogen and entrained solid carbonaceous fines;

    (l) separating at least a portion of said solid carbonaceous fines from said cooled gaseous stream, said separated fines having an average particle size of less than 10 microns in diameter, and(m) recycling at least a portion of said separated fines to such chargestock of step (a).

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