METHOD OF PURIFYING GASES FROM SULFUR- AND NITROGEN-OXIDES Russian patent published in 1994 - IPC

FIELD: purifying flue gases of heat electric stations. SUBSTANCE: flue gases flow is preliminary humidified and cooled by injecting water into it up to a moisture level of 14-20 vol. % and at a temperature of 20-100 C. Then ammonia is introduced in stoichiometric amount relative to the reaction of ammonium nitrate and sulfate recovering. For recovering said salts the gas flow is irradiated by a beam of energetic electrons. Simultaneously a water solution of transition metals salts, for example the salts of Fe and Mn, is admixed to the flow to be irradiated, the solution concentration being of 5·10^-4-1·10^-2 mole/l mol/l. Ozone-and-air mixture recovered by irradiation action is introduced into a fed flow. Before irradiating the gas flow is turbulized. EFFECT: enhanced efficiency of purification. 2 cl, 3 dwg