METHOD OF DISPOSAL OF DISPERSED POLY-FRACTION ASH-GAS MIXTURE FROM BOILER FURNACE TO ATMOSPHERE Russian patent published in 2010 - IPC F23J11/00 F23B80/00 

FIELD: power engineering.

SUBSTANCE: here is disclosed method of disposal of dispersed poly-fraction ash-gas mixture from boiler furnace to atmosphere by means of successive supply into rotary flue duct with steam super-heater, into system of downhole fuel ducts with economiser and air heater, into ash cleaning installations and smoke stack wherein mixture is divided in two flows in rotary flue duct and particles of ashes of linear dimensions over 20 mcm are withdrawn. Particles of linear dimension over 20 mcm are removed from one flow into another; the flow purified from big-size particles is directed to the downhole fuel duct with the air heater; while the flow saturated with ashes is directed into the downhole fuel duct with the economiser; after the air heater and economiser flows with different concentration of ashes are directed to individual ash cleaning installations.

EFFECT: reduced activity of ash wear of air heaters, increased overhaul period and reduced costs for gas scrubbing form ashes before exhaust to atmosphere.

7 dwg