Patent · US Expired

Method for freeing a liquid from a substance dispersed therein and having a larger density than the liquid

US5720705A · kind A · utility

20Cited by

20References

3Claims

0Family size

Assignee

Alfa Laval Separation A/S · SE

Inventors

Claes Inge · Hagfors, SE
Peter Franzen · Tullinge, SE
Torgny Lagerstedt · Stockholm, SE
Leonard Borgstrom · Tyresö, SE
Claes-Goran Carlsson · Höör, SE
Hans Moberg · Stockholm, SE
Olle Nåbo · Tullinge, SE

Key dates

Filing date	May 8, 1991
Grant date	Feb 24, 1998
Priority date	—
Expiry date	May 8, 2011

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB04B7/14
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

In order to free a liquid form a substance dispersed therein and having a larger density than the liquid a centrifuge rotor is used having a stack of conical separation discs. Elongated spacing members (11a, 11b) in the spaces between the separation discs are formed such that the liquid flow in the disc interspaces is conducted in a certain way. Thus, the main part of the liquid is conducted in flow paths (12a, 12b), each of which has a direction with one radial component and one component turned against the rotational direction of the rotor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.