WNS Series of Low-NOx Gas-fired Steam Boilers

Structural Features

l The WNS series of low-NOx gas-fired steam boilers adopt a horizontal, two-pass and fire-tube structure, mainly being composed of a shell, a boiler furnace, a reversing chamber and a fire tube, etc.

• This series adopts a wet-back structure and a corrugated furnace, enabling the heating surfaces to be symmetrically arranged so that the expansion of the boiler and the stress borne by the boiler can be reasonable.  
• The reasonable arrangement of the heating surfaces ensures a good water circulation and heat exchange, achieving an ideal heat-transfer effect while greatly improving the heat efficiency of the boiler.
•  The nitrogen-oxide emission of the boiler is less than or equal to 30mg/Nm³, reaching the discharge standard of pollutants (European Class III).
• The combustion chamber adopts a corrugated furnace, effectively reducing the thermal stress of the boiler, significantly improving the safety of the boiler, and greatly prolonging the functional life of the boiler.
• This series adopts a globally-famous brand burner and an advanced fully-automatic control system, achieving a stable combustion and a convenient, reliable and safer operation of the boiler. The installation period is short so that the boiler can be immediately put into use once the instruments & valves, the water source, the power supply, the fuel pipeline and the discharge pipeline are communicated on the site.