Treatment of urea solutions

Details Treatment of urea solutions Treatment of urea solutions

1980-11-26

1981-12-29

Cuchlinski, Jr., William A.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

422197, 422200, B01J 1000

Patent

active

043082343

ABSTRACT:
A device for treating urea solutions coming from synthesis reactors and containing in addition to the formed urea also free ammonia, water and unreacted ammonium carbamate having two steps wherein in the first step, a substantial amount of ammonia is distilled while ammonium carbamate is only partially decomposed, and in the second step, the bulk of carbamate is decomposed and the residual ammonia is distilled.

REFERENCES:
patent: 2345424 (1944-03-01), Pfannmuller et al.
patent: 3779711 (1973-12-01), Gryaznov et al.
patent: 4097544 (1978-06-01), Hengstebeck
patent: 4230669 (1980-10-01), Eagle et al.

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