Patent ID: 8911230
Filing Date: 2014-12-16
Classification: F23C,Y02E

Abstract:
1. A method for the operation of a burner ( 1 ) for heating a furnace space ( 2 ), the burner including first fuel and air supply means ( 11 ) for a flameless combustion of fuel injected into the furnace space ( 2 ) via a central fuel injection nozzle ( 18 ) and second fuel and air supply means ( 25 ) for supplying fuel and air to a combustion chamber ( 15 ) within the burner for combustion therein to produce a hot gas for heating the furnace space ( 2 ), and a control unit ( 14 ) for controlling the first and second fuel and air supply means ( 11 , 25 ), the method comprising the steps of: after warm-up operation (A) of the furnace space ( 2 ) to a first temperature threshold by activation of flame combustion of the fuel and air in the combustion chamber ( 15 ), establishing a flameless combustion operation (B) of the first fuel and air supply means ( 11 ) assisted by hot combustion gas generated in the combustion chamber ( 15 ) by the combustion of the fuel and air of the second fuel and air supply means ( 25 ) and discharged via an annular discharge opening ( 17 ) extending around the central fuel injection nozzle ( 18 ) so as to form a hot gas envelop around the fuel jet injected into the furnace space ( 2 ) via the central fuel nozzle ( 18 ).