Method of extracting liquid from wet material

US5016361A · kind A · utility

Assignee

• Maschinenfabrik Gustav Eirich · DE

Inventor

• Herbert Durr · Bergneustadt, DE

Key dates

• Filing date: Jan 31, 1989
• Grant date: May 21, 1991
• Expiry date: Jan 31, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of extracting liquid from wet material in a fluidized bed is characterized in that in a circulating fluidized bed created mechanically by a mixing means, the material is thoroughly mixed, essentially in its entirety and in that in a first stage of the method, using the heat potential of the wet material, the liquid contained at below atmospheric pressure is at least partially evaporated and in that in a second stage of the method which follows on immediately from the first, heated gas is passed through the fluidized bed, the drying process being completed by at least partial saturation of the gas with the vapor from the liquid which is to be extracted.