Combustion control for waste fuel firing

Energy Technology & Control, manufacturer of electronic Burner Management Systems, has expanded its range of combustion controllers to allow waste and bio-fuels to be fired either independently or simultaneously with a conventional gaseous or liquid base fuel.

Simultaneous firing of fuels can usually be achieved using conventional products but waste and biofuels are often characterised by variable availability and inconsistent calorific values. To overcome this an algorithm within the controller software enables safe and efficient combustion to be achieved; an external signal is used to indicate the proportion of waste fuel that should be used across the firing range. Oxygen trim ensures any variability in either the fuel calorific value or external atmospheric conditions does not compromise combustion efficiency.

The ETC6008 caters for liquid and gaseous fuels to be fired independently or simultaneously. A new model, ETC6009, is designed to allow a gaseous base fuel to be mixed with a gaseous bio or waste fuel and includes the provision for valve proving on two separate gas trains.