Combined process for the production of urea and ammonia

Details Combined process for the production of urea and ammonia Combined process for the production of urea and ammonia

1979-07-20

1981-09-22

Meros, Edward J.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

564 66, 564 67, 564 69, C01C 104

Patent

active

042910064

ABSTRACT:
In an integrated or combined process for the production of ammonia and urea, the improvement consisting in that the absorption of CO.sub.2 from the raw gas going to the synthesis reactor for ammonia is carried out with an absorption apparatus which is divided into two sections, one being of the plate type and the other of the thin film type. The predominant fraction of CO.sub.2 is stripped in the thin-film section, the remainder in the adiabatic plate section.

REFERENCES:
patent: 3573173 (1971-03-01), Otsuka et al.
patent: 3684442 (1972-08-01), Konoki et al.
patent: 4013718 (1977-03-01), Guadalupi et al.

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