LAYER BOILER WITH VERTICAL SWIRLING-TYPE FURNACE Russian patent published in 2017 - IPC F23C10/12 F23C5/32 

FIELD: power industry.

SUBSTANCE: layer boiler with a vertical swirling-type furnace contains a layer furnace that includes fuel feeders, a grate and an ash discharge path installed under a swirling-type combustion chamber formed by walls from masonry and furnace screens, with a gas outlet window located on the ceiling screen, and secondary blowing nozzles. Some of these nozzles are mounted on the walls, oriented tangentially to the conditioned body of rotation of the formed vortex with the axis passing through the gas outlet window and directed along the direction of vortex rotation and downward towards the grate, and a part of the secondary blowing nozzles is installed in the combustion chamber corners and directed downward. The gas outlet window is made in the form of a hollow cone with a half-angle of opening of 35 to -35 degrees, protected by lining and pipes and protruding into the swirling-type combustion chamber, with tangentially oriented afterburning blowing nozzles directed to the furnace.

EFFECT: deep burning of combustibles from the layer, entrainment, and of volatiles is provided, due to the stepwise delivery of blast according to an ecologically efficient scheme with the layer combustion device optimal for the fuel applied.

21 cl, 3 dwg