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steam boilers wetback

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.

Wetback 3 Pass Steam Boil

4-Pass Wetback Scotch Boiler - BSI Mechanical, Inc. 2018-4-28 · 4-Pass Wetback Scotch Boiler America's Boiler Company The Burnham Commercial Series 4S four-pass wetback scotch boiler was designed using our 140+ years of boiler experience and is sold and serviced through the largest and most experienced network of sales representatives in the country.

Series 3 Forced Draft Boiler - Burnham Commercial Boile

Series 3 Forced Draft Boiler information from Burnham Commercial, America's leading manufacturer and marketer of high-quality boilers and control systems for commercial and industrial applications as well as Water Heaters, High Efficiency systems, and Control Systems for Commercial Use.

Wetback and Dryback Boilers Compared | Lathrop Trott

The wetback boiler has a rear wall that is surrounded by water, while the rear wall of a dryback boiler is lined with refractory. Since the heat from combustion is used for heating water, the wetback boiler design can be considered more efficient than the dryback boiler.

SCOTCH MARINE FIRETUBE STEAM BOILER MANU

Wetback Steam Boiler Manual 5 Revision 2011.71 Thank you for purchasing a Superior Boiler Works Inc. (SBW) product. This manual is for the Dryback Steam line of boilers. READ AND SAVE THESE INSTRUCTIONS FOR REFERENCE.

York-Shipley Boilers | Donlee Firetube Boilers - POW

The wetback design reduces the amount of refractory in the boiler, providing additional opportunity for heat to be transferred to the boiler's stored water. Like all York-Shipley boilers, the 3-pass wetback can be configured with any choice of burner.

Scotch Marine | Cici Boiler Roo

Hurst Scotch Marine (Fire Tube) Boilers. Dryback – Available in steam or hot water versions, 15 – 800 hp, pressures to 300 psig, two-pass and three-pass design. 81% minimum efficiency. Low maintenance. 5 sq. ft. heating surface/HP. Durable design. Heavily constructed. Wetback – Available in steam or hot water versions. Three pass and four pass wetback design, 30 to 1800 HP, 15 to 300

Scotch marine boiler - Wikiped

The Scotch marine boiler achieved near-universal use throughout the heyday of steam propulsion, particularly for the most highly developed piston engines such as the triple-expansion compounds. It lasted from the end of the low-pressure haystack boilers in the mid-19th century through to the early 20th century and the advent of steam turbines

Industrial Boiler FAQs | Superior Boil

Many firetube boilers currently in operation are well over 25 years old and still making steam and hot water. What Types of Firetube Boilers Does Superior Boiler Manufacture? SBW manufactures 2-pass and 3-pass dryback boilers as well as a full line of 3-pass and 4-pass wetback boilers.

WETBACK DESIGN vs HARD REFRACTORY DRYBACK DESI

• Wetback boilers have separate tube sheets between all major temperature changes. • The rear access door is constructed of lightweight space age vacuum formed ceramic fiber. • The rear doors require no cool-down period and can be opened immediately.

Industrial Boilers - Semi Industrial Boiler Manufactur

Industrial Boilers Our product range includes a wide range of semi industrial boiler, coconut shell fired fully wetback boiler, instant steam generating boilers, nutshell fired fully wetback boiler, coal fired fully wetback boiler and external furnace fired single pass dry back boiler.

Wetback vs Dryback firetube boiler desi

Dryback boilers also require regular refractory and tube sheet inspection, which can be costly maintenance items. Trust the firetube boiler experts at IB&M. If you need help navigating the design aspects to better understand the pros and cons of wetback and dryback firetube boilers, contact our steam plant experts at IB&M today.

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zhulin@zozen.com

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

0086-510-68530066, +86-13506151292

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