초록 ▼

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 seco

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.

대표청구항 ▼

[ What is claimed is:] [14.]14. A method for producing and burning synthesis gas which comprises:introducing carbon dioxide gas into a pyrolysis reactor, said reactor containing a bed of carbonaceous material therein which produces carbon monoxide gas when subjected to pyrolysis conditions in the pr

[ What is claimed is:] [14.]14. A method for producing and burning synthesis gas which comprises:introducing carbon dioxide gas into a pyrolysis reactor, said reactor containing a bed of carbonaceous material therein which produces carbon monoxide gas when subjected to pyrolysis conditions in the presence of carbon dioxide;establishing pyrolysis conditions in said pyrolysis reactor so that said carbon dioxide gas reacts with said carbonaceous material therein to produce a combustible gas which comprises carbon monoxide;optionally introducing the combustible gas produced in said pyrolysis reactor into one or more additional pyrolysis reactors, each additional reactor containing a bed of carbonaceous material therein which produces carbon monoxide gas when subjected to pyrolysis conditions in the presence of carbon dioxide, said carbonaceous material in said one or more additional pyrolysis reactors being maintained under pyrolysis conditions so that residual carbon dioxide contained in said combustible gas reacts with said carbonaceous material in said one or more additional reactors to further increase the amount of carbon monoxide contained in said combustible gas;combining said combustible gas having an increased carbon monoxide content with carbon dioxide gas and substantially pure oxygen to produce a combustible mixture;burning said combustible mixture to produce heat and chemical products of combustion which comprises carbon dioxide;recovering said carbon dioxide and using a portion of said recovered carbon dioxide as a source of said carbon dioxide gas contained in said combustible mixture and as a source of said carbon dioxide gas which is introduced into said pyrolysis reactor.