ZOZEN WNS series oil/gas fired boiler adopts horizontal three-pass wet-back structure,large corrugated furnace and patentedthread pipe technology,equipped with international first-level brand burners and valve groups,and independently developed high-matching PLC control system to realize muitiple linkages.The lock protection function protects the equipment running safely.

Rated steam capacity: 1 ton - 20 ton;
Applicable fuel: Nature gas, biogas, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.  Rated steam pressure: 1.0Mpa(10bar),1.25Mpa(13bar),1.6Mpa(16bar),2.5Mpa(25bar);

WNS series horizontal internal combustion boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.

Technical advantages

Digitized manufacture

The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.

The front and back smoke chamber plates are cut by CNC plasma cutting machine and looks tidy and beautiful.

Easy operation and maintenance

Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.

Longer working life

Smoke tube and tube sheet connection is expanded first to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boilers working life. 

Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.

Fin tube us ND steel or stainless-steel material which avoid low temperature corrosion.

Inspection procedure point is set up to guarantee the sequence of expanding and welding, avoid cracking of the tube sheet holes.

Less fuel consumption

High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ to control heat lost.

Sufficient steam storage room and heating area makes boiler to generate high quality steam and high thermal power.

Condenser is added to reuse the waste heat of the exhausted smoke to increase feeding water's temperature and reduce emission temperature, which can increase the thermal efficiency above 98% and save operating cost.

WARM TIPS:

As place limited, we do not list all boiler models. Need other  boiler, please contact us for boiler specifics and quotation.

Pre-sale service:

We help customer choose the best boiler model according to different requirements of various industry. Before delivery we will provide foundation drawing, layout drawing, boiler room layout, etc.

In-sale service:

We keep 24 hours online and keep close contacts during the production process to ensure on time delivery with perfect finished product.

After-sale service:

1.provide full range of original spare parts.
2.Engineers abroad installation and commissioning service is available.
3.Our engineers will held a training for boiler workers to ensure the safe operation.
4.Free maintenance and repair for one year and lifelong service.