AUTOMATED COAL-FIRED BOILER Russian patent published in 2012 - IPC F23B40/00 

FIELD: power engineering.

SUBSTANCE: automated coal-fired boiler comprises a hopper for solid fuel, a fuel supply device arranged perpendicularly to it, a burner device, an air supply device, a water-cooled furnace, comprising a combustion chamber and an afterburning chamber, lined with refractory bricks from inside, a heat exchanger, an ashpit, and also a unit of automation and an electric drive, besides, the boiler is additionally equipped with two gravity filters installed serially with a heat exchanger in a stack. The heat exchanger is installed between filters, and the device for solid fuel supply is arranged in the form of an auger conveyor enclosed into a cylindrical vessel, the axis of which extends from the hopper via the boiler furnace, the combustion chamber along the axis of the burner device so that the inner half-pipe of the burner is an extension of the auger conveyor body and has a diameter equal to the diameter of the auger conveyor vessel pipe, and in the combustion chamber and in the afterburning chamber there are refractory pipes of secondary air supply.

EFFECT: controlled continuous supply of solid fuel into a combustion chamber of a furnace for complete burning of fuel, continuous removal of ash.

7 cl, 2 dwg