FIELD: burning of solid fuel. SUBSTANCE: prior to feeding fuel, swirled flow of air is formed in working volume of chamber by feeding it tangentially through gas distributing grid; then fuel is fed till revolving fluidized bed is formed in peripheral zone of chamber and after lightening-up feeding the fuel is started; ash particles are removed and combustion products are discharged coaxially. EFFECT: enhanced efficiency. 3 cl, 2 dwg
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