POWDERED FUEL COMBUSTION DEVICE Russian patent published in 2015 - IPC F23D1/00 F23K1/00 

FIELD: power industry.

SUBSTANCE: device for burning of powdered fuel contains the air compression device 1, the air treatment device 2 with the air treatment chamber 3, the device 4 for plasmochemical processing of powdered fuel comprising a plasmatron 5 and a combustion chamber 6, and also the pipelines interconnecting them. The air treatment device 2 is fitted with the air separation device 7 with zeolitic filler, the air separation device 7 is designed with a possibility of periodic heating of zeolite and fitted with one input pipeline 8, the first 9 and the second 10 output pipelines, respectively, for the first air flow with high oxygen content and for the second air flow with high nitrogen content, the second output pipeline 10 is interconnected with the powdered fuel supply pipeline 11 and the ignition chamber 12 with the device 4 for plasmochemical treatment of powdered fuel which is circular and interconnected with the first output pipeline 9 by means of the air tapping pipe 13 with the high oxygen content located in the ignition chamber 12 in internal part of the circular device 4 for plasmochemical treatment of powdered fuel so that the output cut of the air tapping pipe 13 supports the output cut of the plasmatron 5, and the internal surface 15 of the air treatment chamber 3 is formed by a coating - smooth mirror enamel 16 from fusible glass, and the air treatment device 2 is designed as the solid-state laser 17 with the radiation with wavelength of 762±0.5 and/or 1268±0.5 nm, the output 18 of which is directed at the angle to the mirror surface of the air treatment chamber, smaller than the angle of full reflection from the mirror surface 15 of the air treatment chamber, with the possibility of formation by the laser beam 17, at least, of the one-way spiral polygonal line, the step 20 of which between the neighbouring turns is greater than the line size dimension 1 of the output window 21 of the solid-state laser 17 along the air treatment chamber axis 3, the air treatment chamber 3 is interconnected with the combustion chamber 6 through the punched partition 22 located coaxially to the mirror surface 15, the ration of area of holes 23 of the partition 22 to the total area of the partition 22 respectively is less in the mix zone afterburning zone 24 and greater in the dilution zone 25.

EFFECT: invention allows to reduce emissions of toxic substances and improve stability of operation of the device for combustion of powdered fuel.

2 dwg