COUNTERFLOW VORTEX BURNER DEVICE FOR COMBUSTION OF SOLID DUST-LIKE FUEL Russian patent published in 2019 - IPC F23D1/02 

FIELD: fuel combustion devices.

SUBSTANCE: invention is intended for combustion of solid pulverized fuel in various processes of power engineering, housing and communal services, metallurgy (steam boilers, cement furnaces, drying plants, etc.). Counterflow burner device for combustion of solid dust-like fuel comprises combustion chamber, confuser-diffuser vortex chamber, swirling flow device of nozzle inlet, made in form of tangential supply, Archimedean spiral or designed by Bernoulli lemniscate, fuel-air mixture supply branch pipe, fuel dust supply nozzle, igniter, besides, the flow-through cavity of the flow of the cooling confuser-diffuser air vortex chamber is made, primary air is supplied directly into this cavity on the side of end boundary surface of combustion chamber, providing its effective cooling with return of part of energy lost as a result of non-adiabatic energy in form of heat to the combustion products leaving the device. In flange connection of combustion chamber there are holes that provide supply of primary air for cooling of vortex chamber and supply to inlet into swirling flow device of nozzle inlet.

EFFECT: reduced hydraulic losses, reduced fuel consumption, improved mixture formation, higher completeness of fuel combustion.

1 cl, 3 dwg