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boiler once throught

Product Thermal Capacity: 1 - 20 t/h

Working Pressure: 0.7 - 2 Mpa

Available Fuel: Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.

Available Industries: Heat supplying, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc.

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Introduction of WNS gas / oil fired steam boiler:

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:

1. 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.

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

3. 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.

4. 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.


All once-through boilers incorporate relatively small bore evaporator tubes (usually about 25 mm bore) which are generally arranged in a spiral fashion to form the furnace envelope. Two principal options are adopted for the section of the boiler after the furnace.

Effect of Parameters in Once-Through Boiler f

boiler than the constant pressure boiler. For the Benson boiler, the transition from recirculation mode to once-through mode, or vice-versa, is performed automatically with the operation of the low-load recirculation system and turbine bypass system. By adopting the …

What are the types of once through boilers - Answe

Benson Boiler , Sulzer boiler are the main subtypes of once-through boiler

What is the meaning of once through boiler - Answe

The term "once-through boiler" refers to a special type of water-tube boiler composed oftubes, in which water is input at the bottom, and steam is produced from the top.

What is meant by once through a boiler? - Quo

Jan 17, 2018· Traditionally boilers circulate water within them and only a portion gets turned into steam on any one pass. Circulation ratios (the amount of water recirculated versus the amount taken out as steam) can vary from 3 to 20. This serves several purp

Once-through boiler | Article about once-through boiler

Looking for once-through boiler? Find out information about once-through boiler. A boiler in which water flows, without recirculation, sequentially through the economizer, furnace wall, and evaporating and superheating tubes Explanation of once-through boiler

ตัวอย่างเทคโนโลย ีที่ 3 : หม้อไอน้ําแบบไหลผ ่านทางเด ีย

รูปที่2 Once Through Boiler แบบ หม้อไอน้ําตั้งท่อน้ําขด รปทู่ี3 Once Through Boiler แบบ หม้อไอน้ําตั้งหลายท ่อ (Multi Tube) รูปที่ 1 หลักการของ Once Through Boiler

what is the difference between drum type boiler and on

Jan 22, 2009· In a once-through boiler, all of the water that enters the boiler is turned to steam. They may be sub-critical but some can and do operate above …

Why Once Through Boiler | Once Through Boil

The fire tube boiler will run both units (12 ton/h) while Once Through Boiler will run three units (9 ton/h) and have the fourth unit available as required. Since Once Through Boiler can operate from a cold back-up, (water to steam in 5 minutes, while the fire tube boiler can …


Nov 30, 2008· how ONCE-THROUGH BOILERS works - What is the application of such boilers for supercritical steam processes - Application for a typical municipal power plant (20 MWel -Subtypes of this boilers are in use and what are their particulatities.

Large Once-through Boil

Large Once-through Boiler Further evolution of once-through boilers. High-performance, functional and long life, even equal to large boilers. Combustion and feed water PI controls. Equipped with a high-performance economizer. Water separator offers extremely high steam dryness. Equipped with a color touch panel. Equipped with self-diagnosis and

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No. 76, Xin Da Road, Zhou tie Town, Yixing, Wuxi, China

0086-510-68530066, +86-13506151292

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