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Abstract

A process and apparatus for producing and burning synthesis gas. Carbonaceous waste material is pyrolytically decomposed in a primary reactor in the presence of steam to produce raw product gas containing H.sub.2 and CO. The raw product gas and CO.sub.2 is then introduced into a coke containing secondary reactor under pyrolyzing conditions, so that the CO.sub.2 and coke react to produce combustible gas having an increased CO content. The combustible gas is mixed with oxygen and CO.sub.2 to produce a combustible mixture which is burned as a fuel to produce heat, CO.sub.2 and H.sub.2 O. A portion of the produced CO.sub.2 is recovered and used as the source of CO.sub.2 gas in the combustible mixture and as a source of CO.sub.2 gas for the secondary reactor. Preferably filters and scrubbers are used in a closed loop system to avoid undesirable emissions into the environment.

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First Claim