Patent · US Expired

Method for the reprocessing of condensate from urea production plants

US4387029A · kind A · utility

2Cited by

2References

1Claims

0Family size

Assignee

UHDE GMBH · DE

Inventors

Adalbert Huber · Bensheim, DE
Dietrich Schirmer · Iserlohn, DE
Heiko Hoffmann · Simi Valley, US

Key dates

Filing date	Nov 27, 1981
Grant date	Jun 7, 1983
Priority date	—
Expiry date	Nov 27, 2001

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F2101/38
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An improvement in a method for the reprocessing, by oxidation, of condensate obtained in urea production plants and having a urea content of approximately 50 mg/l and a biuret content of approximately 2 mg/l, is disclosed. The improvement comprises performing the oxidation at elevated temperatures and at alkaline pH values; preferably, the oxidation is performed at a temperature greater than 60.degree. C. and a pH value greater than 8.

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