Tangential Low NOx Burner
Foster Wheeler's Tangential Low NOx (TLN) Combustion Systems provide industrial and utility boiler owners with an effective solution to their NOx compliance needs. Our systems are designed to maximize NOx reduction efficiency while minimizing the impact on combustion performance and unit operation. Numerous tangential coal-fired units are equipped with Foster Wheeler's TLN systems. Fuels fired range from lignite and sub-bituminous through low and higher sulfur eastern bituminous coals to pet coke and PRB as well as numerous global coals. Foster Wheeler has retrofitted units from 45 MWe to 900 MWe.
Staging of secondary combustion air has been well documented throughout the international boiler industry to be the single most effective technique for reducing NOx emissions from tangentially fired boilers. By redirecting a portion of the combustion air above the upper fuel elevation, fuel nitrogen conversion and thermal NOx production is reduced. Control of this staging process through proper nozzle and damper design is critical in order to maximize combustion efficiency and component longevity.