Spray drying process for producing anhydrous alkali sulfide

US7011806B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Hans Christian Alt · Gelnhausen, DE
• Andreas Gölz · Maulburg, DE
• Alfred Alig · Pfalzgrafenweiler, DE

Key dates

• Filing date: Nov 14, 2003
• Grant date: Mar 14, 2006
• Expiry date: Mar 16, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/60
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process and a device for producing anhydrous alkali sulfide, wherein an alkali sulfide solution, alkali sulfide suspension, alkali sulfide dispersion or alkali water of crystallization melt is dried by spray drying with inert drying gas loaded with water vapor.