Patent · US Expired

Process for decontaminating contaminated soils

US5094012A · kind A · utility

10Cited by

6References

6Claims

0Family size

Assignee

Metallgesellschaft AG · DE

Inventors

Friedrich Rosenstock · Frankfurt am Main, DE
Jochen Güntner · Alzenau, DE
Elmar Haite · Frankfurt am Main, DE

Key dates

Filing date	Oct 24, 1990
Grant date	Mar 10, 1992
Priority date	—
Expiry date	Oct 24, 2010

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB09C1/06
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

To decontaminate contaminated soil, a layer of the soil is formed on a gas-permeable support in a pressure housing, steam at a temperature from 100.degree. to 190.degree. C. and under a pressure from 1 to 12 bars is fed to the pressure housing and is passed through the layer, the vapor leaving the layer is withdrawn from the pressure housing and condensed. The condensate is purified and the solids are carried away as decontaminated soil.

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