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

• Main Authors: KRÜGER, MATTHIAS PATRICK, ACHATZ, REINHOLD, MEISSNER, CHRISTOPH, KOLBE, BÄRBEL, OLES, MARKUS, SCHMÖLE, PETER, WAGNER, JENS, KLEINSCHMIDT, RALPH
• Format: Patent
• Language: English; French; German
• Published: 19.10.2016
• Subjects: CHEMISTRY; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The invention relates to a plant complex for steel production comprising a blast furnace for producing pig iron, a converter steel mill for producing crude steel, a gas-conducting system for gases that occur in the production of pig iron and/or in the production of crude steel, and a power-generating plant for electricity generation. The power-generating plant is operated with a gas that comprises at least a partial amount of the blast-furnace top gas that occurs in the production of pig iron and/or a partial amount of the converter gas. According to the invention, a chemical or biotechnological plant is provided and connected to the gas-conducting system and arranged in parallel with the power-generating plant with respect to the gas supply. Externally obtained electricity and power-generating plant electricity are used to cover the electricity demand of the plant complex.