Process for spray-drying materials and mixtures thereof using superheated steam

US5431780A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Wilfried Raehse · Goldkronach, DE
• Volker Bauer · Neuberg, DE

Key dates

• Filing date: Jul 16, 1993
• Grant date: Jul 11, 1995
• Expiry date: Jul 16, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S159/34
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The process of producing particulate, solid, pourable and free-flowing useful materials from water-containing preparations thereof by spray-drying in a hot gas stream under normal pressure wherein the hot gas stream is superheated steam, terminating the spray-drying of the materials before they are completely dry or damaged by heat effects, and then (a) mixing the spray-dried materials with an auxiliary component which is capable of binding residual quantities of water from the materials, or (b) further drying the spray-dried materials under conditions that will not damage the materials, or (c) post-treating the spray-dried materials in a manner as to homogenize the residual moisture in the materials.