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PROCESS FOR PRODUCING CARBON DIOXIDE AND METHANE BY CATALYTIC GAS REACTION

  • US 20100004495A1
  • Filed: 11/02/2007
  • Published: 01/07/2010
  • Est. Priority Date: 11/02/2006
  • Status: Abandoned Application
First Claim
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1. Process for reducing CO2-emission from the combustion of organic materials with oxygen-containing gas forming carbon monoxide (CO) and carbon dioxide (CO2) as well as water (H2O) wherein at least the formed carbon monoxide and carbon dioxide and water produced through the combustion is passed into a two-step catalytic gas reactor that in its first step includes a catalyst forming hydrogen and oxygen by dissociating water and in its second step includes a catalyst forming methane from reactions wherein CO, CO2 and hydrogen participate according to a methanation scheme as follows:


  • CO+H2O=CO2+H2 



    1.
    CO+3H2=CH4+H2O 



    2.
    CO2+4H2=CH4+2H2O 



    3.
    H2O=H2+½

    O2 



    5,wherein the flue gas, before the dissociation of water into hydrogen and oxygen, is recycled to the combustion and used as an inert gas by parts or all of the formed oxygen at the dissociation of water being passed back to the combustion of the organic material, wherein energy released from the methane-forming reactions 2 and 3 as well as energy included in the flue gas and/or from sun and wind energy is used to dissociate water into hydrogen and oxygen through reaction 5 over a suitable catalyst material.

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