Process for cooling dispersions and liquids

US6086723A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Hubinger · Schifferstadt, DE
• Rainer Wunder · Dudenhofen, DE
• Gerhard Bauer · Düsseldorf, DE
• Johannes Dobbelaar · Monsheim, DE
• Sven Lawrenz · Mannheim, DE
• Franz-Josef Mueseler · Neustadt, DE
• Jurgen Nahstoll · Eisenberg, DE
• Robert Rupaner · Ludwigshafen, DE
• Christian Schmidt · Bonn, DE

Key dates

• Filing date: Aug 17, 1998
• Grant date: Jul 11, 2000
• Expiry date: Aug 17, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/90
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for deodorizing and subsequently cooling dispersions or liquids comprising PA0 a) passing steam through the dispersion or liquid to be cooled and held in a vessel (1), said dispersion or liquid being caused to foam up as a result, PA0 b) discharging the foam from the top section of the vessel via a nozzle (5) into an evacuated separation vessel (4), the foam being broken in the process, PA0 c) condensing the water vapor formed from the foam in a heat exchanger (8) and removing volatile organic components at the same time, and PA0 d) returning the broken foam to the vessel (1), in which the steps a) to d) are performed until the dispersion or liquid has been deodorized to the desired extent, wherein, after completion of the deodorization (in accordance with steps a) to d)), the hot dispersion or liquid is discharged from the bottom section of the vessel (1) through the nozzle (5) into the evacuated separation vessel (4), so that the dispersion or the liquid is cooled, the nozzle (5) and the evacuated separation vessel (4) also being used beforehand for performing step b), wherein the water vapor held in the separation vessel (4) is condensed at the heat exchanger (8) which…