SOLID-FUEL BURNER

A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is f...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OKAZAKI HIROFUMI, SHIMOGORI MIKI, OCHI KENICHI, KIYAMA KENJI, MINE TOSHIHIKO, OHYATSU NORIYUKI, TADAKUMA SATOSHI, WAKAMATSU HITOSHI, OCHI YUSUKE, KURAMASHI KOJI
Format:	Patent
Sprache:	eng
Schlagworte:	AIR BLASTING BURNERS COMBUSTION APPARATUS COMBUSTION PROCESSES FEEDING FUEL TO COMBUSTION APPARATUS HEATING LIGHTING MECHANICAL ENGINEERING METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN WEAPONS
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Beschreibung
Zusammenfassung:	A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.