Pulverized solid fuel nozzle assembly

A pulverized solid fuel nozzle assembly includes a fuel feed pipe and a nozzle tip pivotally secured relative to the fuel feed pipe . The fuel feed pipe includes a generally cylindrical shell having a round outlet end and a bulbous protrusion disposed around a perimeter of the round outlet end . The nozzle tip includes an inner shell having a round inlet end arranged in concentric relationship with the round outlet end of the generally cylindrical shell . The round inlet end is disposed around the bulbous protrusion for forming a seal between the inner shell and the fuel feed pipe . The nozzle tip also includes an outer shell arranged in coaxial relationship with the inner shell , and an annular air channel disposed between the inner and outer shells . The nozzle tip is pivotable about at least one axis for directing a stream of pulverized solid fuel from the inner shell