PULVERISED COAL/GAS/OIL FURNACE Russian patent published in 2016 - IPC F23C1/00 F23C5/32 

FIELD: device for fuel combustion.

SUBSTANCE: proposed pulverised coal/gas/oil furnace relates to heat power engineering and can be used for steam boilers equipped with ball-mill pulverisers. It comprises shielded vertical rectangular combustion chamber 1 and V-type dry-bottom ash hopper 2, ashpit 3, groups of pulverised coal 4 and arranged under them gas 5 burners, as well as of oil burners 6 and arranged under them waste agent nozzles of pulverised fuel systems 7 mounted on large walls of combustion chamber 1 in common vertical planes. Burners and nozzles of each type are installed on opposite walls following the opposite-shifted scheme, are directed with inclination downwards and tangentially relative to the horizontal surface of cylindrical conditional solid of revolution 9, while waste agent nozzles of pulverised fuel systems 7 are turned in the horizontal projection to the same direction relative to the said vertical planes at the angle of arctg2S/B, where S is average distance between vertical planes of the burners and nozzles arrangement, B - distance between large walls of the combustion chamber. At large walls of ashpit 3 in vertical planes of the burners and nozzles arrangement there are additionally installed combined nozzles of air and recirculation gases 8 with the direction of their axes inclined upwards and tangentially relative to the horizontal surface of cylindrical conditional solid of revolution 9.

EFFECT: use of this pulverised coal/gas/oil furnace provides higher reliability, economy and ecological safety of its operation.

1 cl, 3 dwg