Plant combination for producing steel and method for operating the plant combination

US10697030B2 · kind B2 · utility

Assignee

• thyssenkrupp AG · DE

Inventors

• Reinhold Achatz · Essen, DE
• Jens Wagner · Untergruppenbach, DE
• Markus Oles · Hattingen, DE
• Peter Schmöle · Dortmund, DE
• Ralph Kleinschmidt · Pulheim, DE
• Bärbel Kolbe · Witten, DE
• Matthias Krüger · Herne, DE
• Christoph Meißner · Dortmund, DE

Key dates

• Filing date: Dec 11, 2014
• Grant date: Jun 30, 2020
• Expiry date: Mar 28, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/133
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

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.