Tornado flow separator for the thermal treatment of fine-grain or granular material

US4454661A · kind A · utility

Assignee

• Kraftwerk Union Aktiengesellschaft · DE

Inventors

• Heinrich Klein · Niedernhausen, DE
• Rudolf Pieper · Erlangen, DE
• Eduard Weber · Nuremberg, DE

Key dates

• Filing date: Mar 2, 1982
• Grant date: Jun 19, 1984
• Expiry date: Mar 2, 2002

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F2025/9191
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Tornado flow separator for the thermal treatment of fine-grain or granular material with at least one gaseous medium, including a cylindrical reaction chamber having a surface, two ends and at least first, second and third treatment zones of substantially equal length through which the material passes after given dwelling time, tangential feeding means for the gaseous media being disposed in the surface of the reaction chamber in the treatment zones for setting the dwelling time of the material in the third treatment zone to be at least twice as long as the dwelling time in each of the first and second treatment zones, at least one inclined tangential material feed disposed in vicinity of one of the ends of the reaction chamber, at least one outlet for treatment material disposed in vicinity of the others of the ends of the reaction chamber, and an exhaust pipe for at least one of excess and spent gaseous media being axially extended into the reaction chamber from along side the material outlet and having a free opening in vicinity of the third treatment zone.