Method and system for energy-optimized and CO2 emission-optimized iron production

US8419825B2 · kind B2 · utility

Assignee

• SIEMENS VAI METALS TECHNOLOGIES GMBH · AT

Inventors

• Thomas Bürgler · Linz, AT
• Stephan Lackner · Linz, AT
• Robert Millner · Loosdorf, AT
• Reinhard Redl · Linz, AT
• Bernhard Rummer · Linz, AT
• Herbert Schmid · Gmunden, AT
• Johann Wurm · Linz, AT
• Andreas Zobernig · Leonding, AT

Key dates

• Filing date: Jun 24, 2009
• Grant date: Apr 16, 2013
• Expiry date: Apr 4, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/134
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for energy- and emission-optimized iron production and an installation for carrying out the process. A first partial amount of a generator gas produced in a melter gasifier is used as a first reducing gas in a first reduction zone. A second partial amount is fed to at least one further reduction zone as a second reducing gas. In addition, after CO2 scrubbing, a partial amount of top gas removed from the first reduction zone is admixed with the generator gas after the latter leaves the melter gasifier, for cooling the generator gas.