Process for the production of urea

Details Process for the production of urea Process for the production of urea

1974-06-06

1976-10-05

Vertiz, Oscar R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12600

Patent

active

039844692

ABSTRACT:
A process for producing urea from CO.sub.2 and NH.sub.3 in which the CO.sub.2 and NH.sub.3 are reacted in a reactor, the reaction product is passed into a first stage decomposer maintained at the same pressure as the reactor, the reaction product is contacted in the first stage decomposer with NH.sub.3 to form a urea solution substantially free of CO.sub.2, said urea solution substantially free of CO.sub.2 is passed from the first stage decomposer to a second stage decomposer also maintained at the same pressure as the reactor and is contacted in said second stage decomposer with a stream of inert gas and an aqueous solution of substantially pure urea is withdrawn from the second reactor.

REFERENCES:
patent: 3091637 (1963-05-01), Cook et al.
patent: 3281464 (1966-10-01), Tsao
patent: 3514484 (1970-05-01), Wentworth
patent: 3607938 (1971-09-01), Braun
patent: 3647872 (1972-03-01), Kaasenbrood et al.
patent: 3674847 (1972-07-01), Kaasenbrood et al.
patent: 3816528 (1974-06-01), Cook
Urea Process Technology - 1968 - Dr. R. Powell, pp. 136-142.

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