Method for the reprocessing of condensate from urea production p

Details Method for the reprocessing of condensate from urea production p Method for the reprocessing of condensate from urea production p

1981-11-27

1983-06-07

Cintins, Ivars C.

Liquid purification or separation

Processes

Chemical treatment

210766, C02F 172

Patent

active

043870295

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.

REFERENCES:
patent: 3281464 (1966-10-01), Tsao
patent: 3287407 (1966-11-01), Zardi
Chemical Abstracts, vol. 95, 1981, p. 343, Abstract No. 67417w, Tanaka, H., "Behavior of Urea in Wet Oxidation Treatment".
Chemical Abstracts, vol. 95, 1981, p. 321, Abstract No. 120494x, Inoue, H., "Dissolved Pollutant Removal by Contact Oxidation".

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