Integrated urea-ammonia process

Details Integrated urea-ammonia process Integrated urea-ammonia process

1975-06-12

1977-03-15

Peters, G. O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

423359, C07C12600

Patent

active

040124436

ABSTRACT:
Improved integrated process for simultaneous synthesis of ammonia and urea. Improved yields of urea in purified form are obtained by a simple process which curtails the addition of external water to the process. Two carbon dioxide absorbers are employed. A concentrated ammonium carbonate solution is utilized in the primary carbon dioxide absorber. A secondary carbon dioxide absorber is downstream in series to the first or primary carbon dioxide absorber. An ammonical solution of ammonium carbonate is utilized in the secondary carbon dioxide absorber.

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