Patent ID: 11959639
Assignee: TECHNIP FRANCE
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 1:
2. A method for combusting fuel gas with oxidant gas in a process furnace comprising a firebox containing a burner and a tube, the method comprising:
subjecting an oxidant gas and/or the fuel gas to humidification, thereby obtaining a humidified gas; and
superheating the humidified gas with an external waste heat stream and thereafter feeding the superheated, humidified gas to the burner, wherein the external waste heat stream has a temperature in the range of 40-100° C., wherein the temperature of the humidified gas in the superheating step is increased by at least 10° C., wherein the humidification step results in a humidified gas of 20-50° C., wherein the humidified gas is superheated to a temperature of 40-75° C.