FIELD: process engineering.
SUBSTANCE: invention relates to heat-and-power engineering and may be used for complete recovery of heat-generator flue gases. Proposed method comprises mixing flue gas with ozone-air mix, cooling it to below dew point, oxidising nitrogen oxides to dioxides, condensing water vapors, absorbing nitrogen dioxides by formed condensate to make acid condensate in treatment zone. Acid condensate is treated in heat recovery unit to obtain cleaned flue gases. The latter are fed into gas classifier and forced through beds with granulated blast-furnace slag for CO2 to be absorbed hereby. At the outlet of final bed, flue gases are cleaned by CO2 and withdrawn from classifier as nitrogen. Said beds are rinsed with washing fluid without stopping said classifier.
EFFECT: higher efficiency of heat-generators.
2 cl, 7 dwg
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