| 摘要 |
In a process and apparatus for the reduction of metal oxides 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, the fuel gas for burners 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 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. |
| 主权项 |
1. An apparatus comprising:
a reduction unit for the reduction of metal oxides to form metalized material, a reformer for carrying out catalytic reformation of a mixture of a gas containing at least one of carbon dioxide and steam with gaseous hydrocarbons, wherein the reformer is provided with a mixture supply line for supplying the mixture, and wherein the reformer is provided with burners, which are connected to an oxygen supply line, for providing heat by the combustion of fuel gas, having a drawing-off line for drawing off combustion off-gas from the reformer, having a reducing gas supply line for hot reducing gas from the reformer into the reduction unit, having a discharge line for discharging top gas from the reduction unit, wherein the burners are connected to the discharge line via a connection line which branches off from the discharge line, and wherein a dedusting apparatus is present at least in the discharge line between the reduction unit and the connection line which branches off from it, or in the connection line, and wherein a CO conversion reactor, a gas cooling apparatus and a CO2 removal apparatus are present in succession, as seen from the discharge line, in the connection line, between the dedusting device which may be present and the burners. |
