COMBUSTION METHOD OF CAVITATION WATER-COAL FUEL IN INERT MATERIAL FLUIDISED BED FURNACE, WHICH REDUCES FORMATION OF EMISSIONS OF NITROGEN AND SULPHUR OXIDES Russian patent published in 2015 - IPC F23C10/00 

FIELD: power industry.

SUBSTANCE: combustion method of cavitation water-coal fuel in inert material fluidised bed 3 furnace 1, which reduces formation of emissions of nitrogen and sulphur oxides, consists in creation of fluidised bed 3 of inert material in furnace 1 by supplying under it of heated air and further supply from above onto it of cavitation water-coal fuel and differs by the fact that cavitation water-coal fuel is burnt at two stages; at the first stage, fuel is ignited in low-temperature fluidised bed 3 of inert material at the temperature of 930-1000°C and lack of oxygen, and at the second stage, the same fuel is finally burnt in the upper part of furnace 1 at the temperature of 1000-1200°C with addition of secondary air. This combustion method of cavitation water-coal fuel in an inert material fluidised bed furnace will allow reducing formation of emissions of nitrogen and sulphur oxides to a minimum value and will require no additional cleaning of exhaust flue gases from harmful gaseous impurities contained in them, which will reduce environmental pollution.

EFFECT: combustion method of cavitation water-coal fuel is simple and can be used at existing or newly built TPP.

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