METHOD OF PRODUCTION OF NITRIC ACID

摘要

inorganic chemistry, chemical technology. SUBSTANCE: method of production of nitric acid involves oxidation of ammonia with air oxygen, cooling nitrous gases to form nitric acid condensate, its feeding to absorption stage to yield nonconcentrated nitric acid followed by its whitening in blow-through column. Condensate of nitric acid is subjected for whitening and the whitened condensate after cooling and blow-through gases are fed to absorption stage of cooled nitrous gases. EFFECT: increased concentration of manufacture nitric acid, decreased content of nitrogen oxides in exhausts. 1 dwg