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.
What does firing of boiler mean? Low-water cutoff: It is a mechanical means (usually a float switch) that is used to turn off the burner or shut off fuel to the boiler to prevent it from running once the water goes below a certain point.
Pulvarized Fuel Firing boilers. For getting most calorific value of coal, the coal is pulvarized in fine powder and then mixed with sufficient air. The mixture of coal powder and air is fired in the steam boiler furnace to achieve most efficient combustion process.This is most modern and efficient method of …
How can heat rate be improved in a thermal power plant byApr 16, 2018How much coal is required to generate 1 TPH of steam inJun 01, 2017See more results Jun 02, 2015· There are mainly two methods of firing steam boiler with coal as fuel. One is solid fuel firing other is pulverized fuel firing. There are mainly two types of solid fuel firing system 1) Hand firing Smaller size boiler can be operated by hand firing system. This system was commonly used to drive coal engine locomotive in past.
Author: Audiopedia Pulverized Coal Fired Steam Boilers is an industrial or utility boiler that generates thermal energy by burning pulverized coal (also known as powdered coal or coal dust since it is as fine as face powder in cosmetic makeup) that is blown into the firebox. The basic idea of a firing system using pulverized fuel is to use the whole volume of the furnace for the combustion of solid fuels.
Fuel Usage in Firetube Boilers. Until the 1950s, coal was for economic reasons the primary boiler fuel available in the UK, and with the subsequent history this country is a convenient basis for illustrating the technical alternatives available in many industrialized and developing countries. At that time oil began to compete with coal.
• In corner firing, mills on each side minimize the hot suction ducting and mill piping. This is at the expense of long fuel feeders inevitable with this layout, as the fuel bunker is usually placed between the TG hall and the boiler. PF Boiler Designs. Pulverized fuel boilers can be categorized as: 1. Industrial and small utility. 2. Large
Aug 09, 2018· After all, the main disadvantage of solid-fuel firing is that it does not burn the fuel entirely hence the thermal efficiency of the fuel reduces. On the other hand, the pulverized fuel firing system is universally accepted method of boiler firing in the modern age, mainly because it increases the thermal efficiency of solid fuel to a great extent.
Discussions that follow focus on fuels commonly fired in boilers to generate steam or hot water, atmospheric emissions associated with fuel combustion, and factors that influence how effectively the energy content of the fuel is transferred into usable heat. 3.1 FUELS Many different solid, liquid, and gaseous fuels are fired in boilers.
The firing rates of burners could be determined by using individual fuel flowmeters. However, this is usually prohibitively expensive in plants that have many …
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