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Manufactured by Zhengzhou Wister Gas Equipment Co., Ltd., the WST-QEF-14 is an integrated low-NOx gas burner specifically designed for 20-ton industrial boilers. It adopts staged combustion + flue gas recirculation (FGR) technology to achieve ultra-low NOx emissions while maintaining high energy efficiency and stable operation, compatible with natural gas, LPG and other gas fuels.
Applicable Equipment: 20-ton steam boilers, hot water boilers, thermal oil heaters, hot air furnaces.
Fuel Compatibility: Natural gas, liquefied petroleum gas (LPG), town gas, biogas.
Thermal Power: 14MW (approx. 12,000,000 kcal/h), matching standard heat load of 20-ton boilers.
Control Mode: PLC touchscreen modulating control, supporting remote PLC communication and MODBUS protocol.
Low-NOx Performance: NOₓ emission ≤30mg/m³, meeting ultra-low emission environmental standards.
Key Structure (Integrated Design):
Blower, gas valve train, combustion head and control system integrated in one unit, compact installation and easy commissioning.
Integrated FGR interface for flue gas recirculation system to further reduce NOx formation.
Equipped with DUNGS gas valve train, pressure switches, UV flame detection, flame failure protection and fault self-diagnosis.
Key Features:
Ultra-low NOx emissions, compliant with the latest national and local environmental regulations.
Integrated design eliminates the need for separate lifting, greatly reducing on-site modification work.
Staged combustion with FGR, thermal efficiency ≥99%, lower energy consumption.
Fully automatic closed-loop control with multiple safety interlocks, stable and reliable operation.
Industrial boilers
Commercial heating
Food/textile/chemical drying equipment
District heating systems
