Patent ID: 7739967
Filing Date: 2010-06-22
Classification: F23D

Abstract:
1. A nozzle tip for a pulverized solid fuel nozzle assembly, the nozzle tip comprising: an inner shell a generally round cross section throughout its length, the inner shell having a round inlet end configured to surround a round outlet end of a fuel feed pipe, the inner shell having at least two shell apertures between the round inlet end and the round outlet end, wherein at least a portion of one of the shell apertures is generally diametrically opposite from the other shell aperture; an outer shell arranged in coaxial relationship with the inner shell, and an annular air channel disposed between the inner and outer shells; c. a first pin passing through a shell aperture into outlet end of the fuel feed pipe; and d. a second pin passing through the other shell, aperture and into the outlet end of the fuel feed pipe aperture; wherein the nozzle tip is pivotable about at least two axes to allow for tilting around the first and second pins and at least one aperture is elongated allowing one of the pins to slide and pivot within it allowing yawing of the nozzle tip and for directing a stream of pulverized solid fuel from the inner shell to a desired location.