Separation of solid particles of various sizes from viscous liquids

US4921615A · kind A · utility

Assignee

• Wintershall Holding GmbH · DE

Inventors

• Walter Lindoerfer · Kassel, DE
• Kai-Udo Sewe · Barnstorf, DE
• Wilhelm Jahn-Held · Staufenberg, DE
• Burkhard Ziebolz · Braunschweig, DE
• Fritz Wagner · Kronach, DE

Key dates

• Filing date: May 27, 1988
• Grant date: May 1, 1990
• Expiry date: May 27, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/202
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Solid particles of various sizes are separated from viscous liquids, for example biomass from liquids of biotechnological processes, by pressure filtration by subjecting the inhomogeneous or homogenized suspension, without or after only a little dilution, to a pressure filtration whereby the solid particles of various sizes are retained according to size in a plurality of, in particular in from 1 to 3, superposed or juxtaposed filter stages on filter layers of various depths and on filter surfaces and are separated from the viscous liquid.