PROCEDURE AND FACILITY FOR UTILISATION OF ACID CONDENSATE OF SMOKE FUMES AND PRODUCTION OF NITRIC ACID Russian patent published in 2010 - IPC B01D53/56 

FIELD: power industry.

SUBSTANCE: invention can be implemented in heat-and-power industry. From the zone of smoke fumes treatment acid condensate is supplied into cold sector 3 of continuously rotating utiliser, wherein water is frozen from acid concentrate, and solution of nitric acid (HNO₃·3H₂O) is separated. At the same time stripped smoke fumes are supplied from the zone of treatment into hot sector 4 of the utiliser where ice is defrosted. The facility consists of cylinder box 1 equipped with sector plate 2, branches of inlet 14 and outlet 9 of air, branches of inlet 10 and outlet 15 of smoke fumes, expanders 11, 12, and entrainment trap 13. Rotor 2 with radial cells 6 filled with packed bed 7 is installed in box 1. Perforated branch 8 of an acid condensate distributor is located over the first cell of the cold sector along a rotation path of the rotor.

EFFECT: increased economic and ecology efficiency of scrubbing acid condensate of smoke fumes with production of nitric acid.

2 cl, 2 dwg