Super low NOx, high efficiency, compact firetube boiler

A firetube boiler furnace having two combustion sections and an in-line intermediate tubular heat transfer section between the two combustion sections and integral to the pressure vessel. This design provides a staged oxidant combustion apparatus with separate in-line combustion chambers for fuel-ri...

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Bibliographische Detailangaben
Hauptverfasser:	RABOVITSER IOSIF K, KNIGHT RICHARD A, KORENBERG JACOB, CHOJNACKI DENNIS A, CYGAN DAVID F
Format:	Patent
Sprache:	eng
Schlagworte:	AIR BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES HEATING LIGHTING MECHANICAL ENGINEERING METHODS OF STEAM GENERATION METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN STEAM BOILERS STEAM GENERATION WEAPONS
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Beschreibung
Zusammenfassung:	A firetube boiler furnace having two combustion sections and an in-line intermediate tubular heat transfer section between the two combustion sections and integral to the pressure vessel. This design provides a staged oxidant combustion apparatus with separate in-line combustion chambers for fuel-rich primary combustion and fuel-lean secondary combustion and sufficient cooling of the combustion products from the primary combustion such that when the secondary combustion oxidant is added in the secondary combustion stage, the NOx formation is less than 5 ppmv at 3% O2.