METHOD AND DEVICE FOR HEATING A FURNACE

Method for heating a furnace (100), arranged with a heating zone (120) heated using a burner (122) providing a flame extending in a longitudinal direction (D) and fed with a fuel and a primary oxidant. The invention is characterised in that the burner is operated with a mass relationship between the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	EKMAN, TOMAS, MUREN, DAVID, RITZÉN, OLA
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	AIR AIR SUPPLY BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE DRAUGHT-INDUCING FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN OPEN SINTERING OR LIKE APPARATUS OVENS REGULATING OR CONTROLLING COMBUSTION RETORTS SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS WEAPONS
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Beschreibung
Zusammenfassung:	Method for heating a furnace (100), arranged with a heating zone (120) heated using a burner (122) providing a flame extending in a longitudinal direction (D) and fed with a fuel and a primary oxidant. The invention is characterised in that the burner is operated with a mass relationship between the fed fuel and primary oxidant permitting less than 50% of the fed fuel to be combusted using the primary oxidant, in that a respective pair of secondary oxidant lances (151,152;153,154) are provided one either side of the furnace pointing into the heating zone, lancing a secondary oxidant into the heating zone downstream of the said burner, substantially in parallel with a cross plane (C), in that the temperature is measured downstream of the said lances, in that each of the lance pairs comprises an upstream, low-speed first and a downstream, high-speed second lance, and in that the amount of secondary oxidant supplied via the first lance is regulated to achieve a homogenous lateral temperature profile. The invention also relates to a furnace.