APPARATUS FOR PRODUCING NITRIC ACID Russian patent published in 2011 - IPC C01B21/40 

FIELD: chemistry.

SUBSTANCE: invention relates to inorganic chemistry and apparatus for producing nitric acid. The apparatus for producing nitric acid has pipes for supplying nitrogen and oxygen, a gas mixer 3, a generator 7 with gas inlet 8 and outlet 9 nozzles, a gas-water mixer 11 and a heat exchanger 12. The gas mixer 3 and the generator 7, in which a high-temperature zone with a gas phase is formed by creating nanosecond cold plasma electric arc streamer discharges, form a generator unit 1. The gas-water mixer 11, heat exchanger 12, which is a cooler and circulating pump 15 form an absorption unit 2, which is in form of a circulation loop. The absorption unit 2 also includes a surge vessel 13 in which there is a concentrator 14, which serves to maintain balance of the working solution.

EFFECT: apparatus simplifies the scheme for producing nitric acid and increases efficiency of the process owing to cutting power and capital expenses.

9 cl, 3 dwg, 1 ex