Patent ID: 6283747
Filing Date: 2001-09-04
Classification: F23D,F23L,Y02E

Abstract:
A method for heating a furnace, the furnace comprising at least one burner capable of operating on an oxidant the oxygen content of which can vary, the method comprising the steps of:supplying the burner during a first period (P1) with oxidant consisting essentially of pure oxygen so as to provide a large amount of energy for heating;supplying the burner during a second period (P2) with an oxidant, the oxygen content of which oxidant being between about 100% and about 21% based on the desired heat performance and cost of operation of this oxidant;supplying the burner during a third period (P3) with an oxidant, the oxygen content of which oxidant is minimal, the third period including a pilot period which requires only a small amount of heating energy.