Treatment of urea solutions

Details Treatment of urea solutions Treatment of urea solutions

C - Chemistry, Metallurgy

07

C

23/394, 260/557.

C07C 273/04 (2006.01) B01J 3/04 (2006.01) B01J 10/00 (2006.01)

Patent

CA 1127663

ABSTRACT OF THE DISCLOSURE A process and 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.

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