Device and method for drying pourable products

US6449869B1 · kind B1 · utility

Assignees

• Glatt Systemtechnik Dresden GmbH · DE
• KWS SAAT AG · DE

Inventors

• Frank Bretschneider · Radeberg, DE
• Bruno Peter · Einbeck, DE
• Jurgen Bruckner · Dresden, DE

Key dates

• Filing date: May 24, 2000
• Grant date: Sep 17, 2002
• Expiry date: May 24, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F27/1154
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Device and method for drying a pourable products. The device includes a rotor chamber in which a rotor is arranged with a vertical rotor axis. The rotor has a central horizontal surface and, at least in its radially outer third, a conical shell which is inclined to the axis of rotation by 20° to 70°, in such a way that the end face of the conical shell has the largest diameter and is located at the top. The conical shell has, at least partially, sheet-like gas passages in the form of perforations or screens. The method for drying pourable products provides for dry gas to be fed in a sheet like manner to the products to be dried during the radially peripheral circulation of the products without the products being swirled up and being exposed to unacceptable compressive, concussive and/or frictional loads.