Continuous, completely jacketed, countercurrent centrifugal extractor

US4451247A · kind A · utility

Assignee

• Westfalia Separator GmbH · DE

Inventors

• Willi Ostkamp · Oelde, DE
• Karlheinz Brunner · Großkrotzenburg, DE
• Friedrich Wibbelt · Oelde, DE

Key dates

• Filing date: Jan 18, 1983
• Grant date: May 29, 1984
• Expiry date: Jan 18, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B2001/2083
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A continuous, completely jacketed countercurrent centrifugal extractor of the type utilized to mix and separate two liquids that have different specific gravities and enter through separate inlets. The extractor has at least one overflow weir in a mixing zone between the inlet for the specifically lighter and the inlet for the specifically heavier liquid phase and a division of the mixing zone into mixing-and-separation compartments. Access channels empty into the vicinity of the inner surface of a drum jacket and into that of the heavier phase, to conduct the lighter phase out of the compartment inside the hub of a conveyor worm into the initial mixing-and-separation compartment. One or more overflow channels also empty into the vicinity of the heavier phase, in the overflow weir to divert the lighter phase separated in the initial mixing-and-separation compartment into another and subsequent mixing-and-separation compartment. The design creates several highly efficient contact points in the vicinity of the mixing zone that enhance the extracting action.