Chemistry of inorganic compounds – Nitrogen or compound thereof – Oxygen containing
Patent
1978-07-26
1980-08-26
Peters, G. O.
Chemistry of inorganic compounds
Nitrogen or compound thereof
Oxygen containing
423396, C01B 2140, C01C 118
Patent
active
042195365
ABSTRACT:
An improved process for preparing nitric acid. The process is characterized by the steps of (1) contacting gaseous nitrogen dioxide with feed water to yield aqueous liquid nitric acid and a gaseous by-product; (2) contacting the gaseous by-product with ammonia and water to yield a decontaminated gaseous effluent and an aqueous liquid by-product comprising aqueous ammonium nitrate, ammonium nitrite and nitric acid, and (3) feeding the liquid product to the first step above and reducing the amount of said feed water up to an amount equivalent to the water fed in the liquid product. The process is characterized by substantially reduced water consumption and improved pollution control economics and by the innocuous disposal of the hazardous ammonium nitrite.
REFERENCES:
patent: 910530 (1909-01-01), Halvorsen
patent: 1957130 (1934-05-01), Bartling et al.
patent: 2072947 (1937-03-01), Fogler et al.
patent: 2110431 (1938-03-01), Voogel
patent: 2697652 (1954-12-01), Ribble et al.
patent: 3579298 (1971-05-01), O'Brien et al.
Supplement to Mellor's Comp. Treatise on Inorg. and Theoretical Chem. vol. VIII John Wiley and Sons, N. Y. 1968, p. 388.
Chevron Research Company
DeJonghe T. G.
Newell D. A.
Peters G. O.
Squires L. S.
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