PLANT COMBINATION FOR PRODUCING STEEL AND METHOD FOR OPERATING THE PLANT COMBINATION

摘要

The present application relates to a plant complex for steel manufacturing, wherein the plant complex is a blast furnace (1) for generating pig iron, a converter steel workpiece (2) for generating crude steel, and generated when pig iron is generated and/or when crude steel is generated. A gas flow system for gases and also a power generating plant 3 for electricity generation. The power generating plant 3 is a partial amount of the blast furnace upper gas 7 generated when pig iron is generated in the blast furnace 1 and/or the partial amount of the converter gas 9 generated in the converter steel works 2 It is operated with a gas containing at least. According to the present application, there is provided a chemical or biotechnology plant 12 connected to the gas flow system and arranged parallel to the power generating plant 3 with respect to the gas supply. The gas flow system comprises an operationally controllable gas converter 13 for dividing the gas streams supplied to the power generating plant 3 and the chemical or biotechnology plant 12. The electric power generating plant electricity 16 generated by the electric power generating plant 3 of the plant complex and the electricity 15 obtained from the outside are used to cover the electric requirements of the plant complex. This forms the ratio of electricity occupied by externally acquired electricity 15 with respect to the total electricity demand of the plant complex as a variable process parameter, and useful gas N1 supplied to the power generation process according to the process parameter. It involves determining the amount of.