Oil and coal fired ignition burner in boiler heating assembly

F - Mech Eng,Light,Heat,Weapons – 23 – D

Patent

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158/3

F23D 17/00 (2006.01)

Patent

CA 1199861

ABSTRACT OF THE DISCLOSURE A boiler-heating assembly of a power plant has a fire chamber bounded by four vertical walls each supporting two main burners and two associated ignition burners. Each ignition burner has a cylindrical open-ended chamber with a central pipe terminating in an oil nozzle, a double-walled nozzle tube whose interspace optionally carries a mixture of air with brown-coal dust or oil set in rotation by a tangential feed, and a blower driving air axially through the chamber in an inner and an outer air stream separated by the double-walled nozzle. An annular baffle on the oil nozzle has a solid frustoconical rear surface deflecting the inner air stream radially outward across the air/fuel mixture exiting from the interspace and into contact with the outer air stream, both air streams corotating with that mixture.

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