Process for thermally treating fine-grained solids

US4108634A · kind A · utility

Assignees

• Metallgesellschaft AG · DE
• Deutsche Babcock Aktiengesellschaft · DE

Inventors

• Martin Rahn · Frankfurt am Main, DE
• Lothar Reh · Zumikon, CH
• Bernd Thone · Friedberg, DE
• Karel Vydra

Key dates

• Filing date: Aug 11, 1977
• Grant date: Aug 22, 1978
• Expiry date: Aug 11, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10J2300/0976
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for thermally treating fine-grained solids with high-oxygen gases at temperatures at which the solids can form molten and gaseous reaction products comprises carrying out the thermal treatment at least in part in a cyclone chamber. The solids, high-oxygen gases and, if desired, an energy carrier (usually a carbon-containing solid, liquid or gas) are mixed to form a suspension at a temperature below the reaction temperature. The suspension is fed to a vertical combustion path (tube) and reacts therein to form another suspension of primarily molten particles which is admitted to the cyclone chamber. Reactants are added to the gas phase within a core-flow region of the cyclone chamber and/or immediately after the discharge of gas therefrom to a cooling chamber.