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.
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.
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.
The semi-short term is a wet layup and consists of draining the boiler of old boiler water and refilling with fresh feed water and chemical; preferably with a pH of 12.4 (or as close as possible). Long Term Boiler Layup Procedure — If you plan to have your boiler shut down for longer than 30 days, then you should perform the long term layup.
Nov 14, 2017· Problems with Traditional Lay-Up. Even though the need for corrosion protection is well known, traditional lay-up methods are often clumsy, labor intensive or inadequate. Because moisture is one of the key instigators of boiler lay-up corrosion, a common approach is to drain the system and place desiccant or silica inside.
Laying Up a Boiler by the Wet Method . A wet lay-up is done after a thorough cleaning of both firesides and watersides. The feedwater used to fill the boiler is deaerated as much as possible. While the boiler is being filled, add caustic soda in sufficient quantities to maintain a pH reading of 9.5 to 11.
Jul 24, 2017· Wet Lay-up Method. Wet lay-up is the preferred method for storing boilers that must be maintained in an emergency standby mode. However, boilers should not be stored for periods longer than 6 months in the wet lay-up condition. During this period the boiler should be fired twice per month to bring the boiler water to 160 o F. This circulates
Cascade lay up boiler with hot boiler water from an operating boiler Light firing of the boiler Use of a 50/50 water/ethylene-glycol mixture (this however, requires that the boiler be drained, flushed, and filled with fresh feedwater prior to start up)
ideally suited for dry lay-up (although wet lay-up is possible) and can protect for up to two years! Anytime a boiler or related equipment is non-operable and can be drained, VCI technology is an excellent choice. Q - Can I inspect the boiler with this material inside? A - The vapors are not hazardous. However, it is suggested that appropriate
A dry lay up is intended for a long term shutdown, while a wet lay up allows operators to quickly put a boiler back into service if the need arises. The exact steps involved in both of these lay up procedures differ between boiler sizes and models, but in general these are the appropriate steps technicians should follow when shutting down their
Unlike a wet lay-up method, the dry lay-up also has a “set and forget it” component; it does not require constant monitoring, testing or circulation of the water. DRY LAY UP PROCEDURES This procedure is preferable for boilers out of service for extended periods of time or in locations where freezing temperatures may be expected during standby.
File Size: 206KB This post covers the features and benefits of performing a WET lay-up. (The next post in this series will cover a DRY boiler lay-up procedure.) The wet lay-up protocol is the one that you want to use if you have a boiler that is sitting idle, but that may need to be ready to …
Wet lay-up entails keep-ing a boiler filled with treated water. It allows the boiler to be returned to service within a short notice. Under this method, the boiler water chemistry must be pre-pared before shutting down. As water cools down, it will absorb more oxygen, increasing potential for
Apr 02, 2016· For wet layup, an empty boiler is completely filled with water containing the recommended concentrations of layup chemicals. Only volatile chemicals should be mixed with water used to lay up superheaters and reheaters. After a boiler is filled and sealed, a slight pressure should be maintained to prevent air inleakage.
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