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Conversion of liquid heavy hydrocarbon feedstocks to gaseous products

  • US 8,653,149 B2
  • Filed: 05/26/2011
  • Issued: 02/18/2014
  • Est. Priority Date: 05/28/2010
  • Status: Active Grant
First Claim
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1. A process for generating a gaseous raw product stream from a liquid heavy hydrocarbon material, the process comprising the steps of:

  • (a) dispersing the liquid heavy hydrocarbon material in a gaseous carrier to produce a dispersed heavy hydrocarbon feed;

    (b) introducing a superheated gas feed stream comprising heat energy and steam, and optionally carbon monoxide and hydrogen, into a reactor containing a bed of an alkali metal-impregnated carbonaceous carrier;

    (c) optionally introducing an oxygen-rich stream into the reactor to generate heat energy and, optionally, carbon monoxide and hydrogen in situ;

    (d) contacting the dispersed heavy hydrocarbon feed with steam, carbon monoxide and hydrogen in the presence of the bed of the alkali metal-impregnated carbonaceous carrier, at an elevated pressure and at a temperature of from about 1100°

    F. to about 1400°

    F., to generate a raw gaseous mixture comprising methane, one or both of ethylene and propylene, and one or both of ethane and propane; and

    (e) withdrawing a stream of the raw gaseous mixture from the reactor as the gaseous raw product stream,wherein the reaction in step (d) has a syngas demand, and the syngas demand is at least substantially satisfied by carbon monoxide and hydrogen that may be present in the superheated gas feed stream, and by carbon monoxide and hydrogen that may be generated in step (c).

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