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Catalytic steam gasification of petroleum coke to methane

  • US 8,114,176 B2
  • Filed: 10/12/2005
  • Issued: 02/14/2012
  • Est. Priority Date: 10/12/2005
  • Status: Active Grant
First Claim
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1. A process for converting petroleum coke to methane, comprisingcombining petroleum coke and a catalyst having steam gasification activity in an aqueous medium to form a feed slurry;

  • introducing said feed slurry and superheated steam into a slurry drier to produce net steam and substantially dry solid particles of petroleum coke impregnated with catalyst;

    reacting said dry solid particles with said net steam in a gasification reactor to form a raw product gas comprised of unreacted steam, methane, carbon dioxide, hydrogen, and carbon monoxide;

    recovering methane from said raw product gas; and

    controlling the concentration of catalyst in said aqueous medium based on the amount of ash in said petroleum coke.

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