GAS-BURNER DEVICE AND METHOD FOR OPERATING A GAS-BURNER DEVICE
The invention relates to a gas-burner device and to a method for operating a gas-burner device, comprising a conveyor device (1) for conveying a gaseous fuel to a burner (2) and comprising a recirculation device (3) for recirculating an exhaust gas quantity produced during the combustion of the fuel to the burner (2). It is essential to the invention that a sensor device (4) is provided for ascertaining the composition of the fuel, and the recirculation device (3) is designed to be controlled on the basis of the fuel composition detected by the sensor device (4).