Patent · US Expired

Oxidative cleaning process of contaminated slurries or slurried earth

US5720578A · kind A · utility

0Cited by

7References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Klaus Holzer · Leverkusen, DE
Otto Horak · Cologne, DE
Thomas Melin · Longview, US

Key dates

Filing date	Jul 1, 1996
Grant date	Feb 24, 1998
Priority date	—
Expiry date	Jul 1, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S210/912
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

In the process for treating contaminated mud or suspended earth, the mud or the suspended earth in concentrations of 3% to 25% dry matter is wet-oxidized by addition of pure oxygen or an oxygen-containing gas at a temperature of 120.degree. C. to 220.degree. C., under a pressure of 3 bar to 50 bar and at pH values <7. To accelerate the oxidation reaction, iron ions alone or in combination with quinones or quinone-forming substances are added to the mud or to the suspended earth.

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