FURNACE Russian patent published in 2006 - IPC F23C6/04 

FIELD: power engineering.

SUBSTANCE: furnace comprises central and peripheral combustion chambers separated with a shield and interconnected through a port, burning device whose inlet section is set in the space of the peripheral combustion chamber and the circulation pipe whose inlet face is provided with the nozzles for supplying injecting agent and air and outlet face is provided with burning nozzle, and dust sources connected with the burning device through the main and by-pass dust ducts with valve gates. The circulation pipe is set inside the burning nozzle to define a ring space between them. The by-pass dust duct is connected with the circulation pipe set inside the main dust duct connected with the burning nozzle. The burning nozzle and circulation pipe are made of a converging tubes. The by-pass dust duct is connected with the source of finely dispersed dust. The circulation pipe and burning nozzle receive converging shells to define ring spaces between the circulation pipe and burning nozzle and is mounted with a spaced relation to their inlet and outlet faces made of semi-tores.

EFFECT: improved design.

1 cl, 1 dwg