Method and apparatus for adsorptive cleaning of substances

US5753103A · kind A · utility

Assignee

• OHMI Forschung und Ingenieurtechnik GmbH · DE

Inventors

• Peter Transfeld · Magdeburg, DE
• Matthias Schneider · Heidesheim, DE
• Gunter Borner · Radevormwald, DE

Key dates

• Filing date: May 23, 1997
• Grant date: May 19, 1998
• Expiry date: May 23, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11B3/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

In a method and apparatus for adsorptive cleaning of vegetable and/or mineral oils and fats operating by a multi-stage countercurrent process, in which uncleaned oil is fed to a first stage, where it is put into contact and pre-cleaned with an already used and partly loaded adsorptive agent, fed to a first separating stage, put into contact with fresh adsorptive agent at a second stage, and then fed to a second separating stage and in which the constituents removed from the oil at the second separating stage are re-utilised at the first step in the process, as an already used, partly loaded adsorptive agent, these constituents are obtained and/or prepared as a pumpable sludge and passed to the uncleaned oil in the first stage with air excluded.