Method for reducing the acid content of a nitric acid solution b

Details Method for reducing the acid content of a nitric acid solution b Method for reducing the acid content of a nitric acid solution b

1981-12-08

1984-01-24

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204102, 423351, C25B 100

Patent

active

044275030

ABSTRACT:
Process for reducing the acid content of a nitric acid solution by using an electrolysis current which is capable of reducing HNO.sub.3 at the cathode. The nitric acid solution is divided into a first volume portion and a second volume portion. The first volume portion is reduced electrolytically to form a reaction product containing ammonium nitrite (AN). The second volume portion is reduced electrolytically to form a reaction product in the form of nitrous gases NO.sub.x, essentially NO and/or NO.sub.2. The reaction products are brought together and reacted at a temperature in the range from 50.degree. C. to below the boiling point of the solution resulting from the bringing together of the reaction products, by heating the resulting solution.

REFERENCES:
patent: 1040379 (1912-10-01), Moest et al.
patent: 3401098 (1968-09-01), Hersch et al.
patent: 3510412 (1970-05-01), Raviv et al.
patent: 4056482 (1977-11-01), Schmieder et al.

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