METHOD OF RESTORING BASED ON REFORMING GAS WITH REDUCED NOX EMISSIONS

摘要

1. A method of reducing metal oxides to a metallized material by contact with a hot gaseous reducing agent, wherein the gaseous reducing agent is at least partially obtained by catalytic reforming of a gas mixture that contains carbon dioxide (CO) and / or water vapor (BUT), with gaseous hydrocarbons, moreover, the heat for the endothermic reforming process occurring during the conversion, at least partially, is supplied by burning combustible gas, and the gaseous products of combustion resulting from this they are cooled and freed of water, characterized in that the oxygen necessary to burn the combustible gas is introduced into the combustible gas as part of a gas mixture prepared from a partial amount of gaseous products of combustion and pure oxygen that are cooled and free of water. 2. The method according to claim 1, characterized in that the gas, which contains carbon dioxide (CO) and / or water vapor (BUT), is blast furnace gas from the reduction process of metal oxides. The method according to claim 1, characterized in that the gas that contains carbon dioxide (CO) and / or water vapor (BUT) is an exhaust gas from a reduction smelting process or synthesis gas from a coal gasification process. The method according to claims 1 to 3, characterized in that at least a partial amount of gaseous products of combustion, which are not used to create a gas mixture, receive CO.5. The method according to claims 1 to 3, characterized in that the gas mixture is heated before it is brought to the combustible gas. A device for implementing the method according to one of claims 1 to 5, including a reduction reactor (1) for restoring