REFORMED GAS-BASED REDUCTION METHOD WITH RETURN OF THE WASTE REDUCTION GASES AND DECARBONISATION OF THE WASTE GAS COMPONENT USED AS COMBUSTION GAS FOR THE REFORMER

摘要

The present invention relates to a process for the reduction of metal oxides (3) to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of a gas containing carbon dioxide (CO2) and/or steam (H2O) with gaseous hydrocarbons, wherein the fuel gas for burners (8a, 8b, 8c) which provide the heat for the endothermal reformation processes which take place during the reformation is obtained at least partially from a partial quantity of the top gas produced during the reduction of metal oxides (3) to form metalized material, wherein this partial quantity of the top gas, before it is used as a component of the fuel gas, is firstly subjected to dedusting and then to a CO conversion reaction, and the conversion gas obtained during the CO conversion reaction is subjected to CO2 removal after cooling. Furthermore, the present invention relates to an apparatus for carrying out the process. (Fig. 1)