Patent · US Expired

Detoxification of cyanides and cyanide-containing solutions

US4042502A · kind A · utility

7Cited by

4References

11Claims

0Family size

Assignee

Veb Jenapharm Jena · US

Inventors

Joachim Schmidt · Schlangen, DE
Wolfgang Bamberg · Jena, DE
Hartmut Grunert
Erhard Schorm
Christian Weigelt · Jena, DE

Key dates

Filing date	Mar 21, 1975
Grant date	Aug 16, 1977
Priority date	—
Expiry date	Mar 21, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2101/18
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

The method comprises preheating a cyanide solution to be detoxified by passing the cyanide solution through a heat exchanger and initiating a detoxifying hydrolysis of the cyanide solution by subjecting the cyanide solution to a temperature shock raising the temperature of the cyanide solution to between about 200.degree. and 250.degree. C and passing the cyanide solution through a tubular reactor at a pressure of between about 40 and 140 atm.

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