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.
Heat absorbed by water = 0.95 Vs(t 1 − t 2)MJ s −1,. t 1 and t 2 = temperature of hot gases before and after the W.H. boiler, °C.. Total heat as steam = sensible heat in feed water + heat absorbed by water in boiler. In good practice t 2, the temperature at which the flue gases leave the boiler, may be reduced to ca.50 K above the temperature of the water in the boiler.
For large boiler or small boiler, economizer is a crucial part. Why boiler economizer is necessary? It is reported that 96% of the cost of operating a boiler system comes from fuel costs, and in a typical boiler system, 10% to 20% of energy input is lost in the form of heat escaping to the atmosphere.
What is a Waste Heat Boiler? (with pictur. Mar 09, 2020· A waste heat boiler uses the heat formed as a byproduct of another process, heat which would normally be wasted, and uses it to create steam. The steam can be used to drive turbines which produce electricity. Alternatively, the boiler can simply be used to heat water or other kinds of fluid.
Waste Exhaust Heat Boilers. Approximately 25% of the usable energy of the fuel gas is released in the exhaust of the gas engine. This can be captured for cogeneration in a combined heat and power plant. This heat exits the engine at ~450 o C as ‘high grade heat’, contrasting to ‘low-grade heat’ available from the generator cooling circuits. This high temperature and flow makes it well
As a necessary part of sulfur recovery unit, the waste heat boiler is a typical fire tube boiler. The multi-pipe mouth of the waste heat boiler is connected with the outlet of the heat reaction furnace, which is both the rear wall of the reactor and the end of the transition zone. The function of the waste heat boiler can be divided into two
Apr 17, 2020· A waste heat boiler of the water-tube design is able to cope with much higher pressures of steam than a fire-tube boiler, but it is more difficult to construct and install. Inside this type of boiler, there are narrower tubes than inside a fire-tube boiler, and the tubes contain water instead of hot gases.
a boiler without its own firebox, which uses the heat of waste gases from industrial or power equipment. The temperature of gases entering a waste-heat boiler is 350°-400°C (in the case of a boiler installed behind an internal-combustion engine) to 900°−1500°C (if it is installed behind a reverberatory or refining furnace or a cement kiln).
Heat recovery steam generator is a high-efficiency steam boiler that uses hot gases from a gas turbine for reciprocating engine to generate steam in a thermodynamic Rankine Cycle. This system is able to generate steam at different pressure levels according to chemical process requirements ( …
What is economiser in boiler?Economizers, in steam power plants , used to capture the waste heat from boiler flue gas and transfer it to the boiler feedwater.What are the types of economisers?There are two main types of economizers: non-condensing economizer and condensing economizer. Non-condensing economizers are mainly used because thWhy economiser is used in boiler?Boiler economizer used to improve steam boiler system’s efficiency. Economizer is kind of heat exchanging device. Waste heat boilers utilise the heat in flue gases from combustion processes or hot waste air flows from industrial processes to generate hot water or saturated steam. Due to economic and legislative considerations, waste heat boilers are frequently used in conjunction with gas turbines and combined heat and power units.
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