Patent · US Expired

Process for separating a solid substance from a liquid mixture of substances

US4828702A · kind A · utility

7Cited by

6References

4Claims

0Family size

Assignee

Fried Krupp · DE

Inventors

Hubert Coenen · Essen, DE
Rainer Hagen · Leverkusen, DE
Klaus Reimann · Eindhoven, NL

Key dates

Filing date	Aug 25, 1987
Grant date	May 9, 1989
Priority date	—
Expiry date	Aug 25, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D11/0203
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Process for separating solid substances from liquid mixtures of substances, wherein the liquid substances contained in the mixture are separated from the solid substances by countercurrent extraction with a solvent which, during the extraction process, is in a liquid or supercritical state and which, under standard conditions, is gaseous. The solvent is fed to a cylindrical extraction chamber at the lowest point of the extraction chamber. The solvent leaves the nozzles with a Reynold's number of 40,000 and flows upward in the extraction chamber with a Reynold's number of 2,700 to 8,000.

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