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disadvantages of fire tube boiler

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.

Firetube vs Watertube Boilers: a Comparis

There are a number of considerations to factor when determining the best boiler for your steam generation needs like operating pressure, steam pounds/hour output, demand fluctuation, general application requirments and total cost of ownership, etc. Two primary boiler types, the firetube boiler and the watertube boiler, are essentially opposite in design. The firetube boiler passes combustion

Advantages and Disadvantages of Water Tube Boilers ov

Advantages and Disadvantages of Water Tube Boilers over Fire Tube Boilers: Advantages: 1. Steam can be raised more quickly: In water tube boilers, the ratio of water content to the steam capacity is comparatively less than the fire tube boiler. Hence water tube boilers can quickly generate steam at the required pressure than the fire tube boiler. 2. Steam at higher pressures can be produced

Fire Tubes Boilers – Advantages and Disadvantag

Apr 20, 2012· Disadvantages. Major disadvantages associated with fire tube boilers are mentioned below: As a general rule, the maximum output generated out of fire tube boiler is around 27 000 kg / h. In case of high steam requirements, one needs to combine multiple boilers together. Besides, the fire tube boiler systems are not capable of working with

Advantage and disadvantage of fire tube boil

Jun 23, 2015· 2) Fluctuation of steam demand can be met easily. 3) Cheaper than water tube boiler. Disadvantages of Fire Tube Boiler 1) Due to large water the required steam pressure rising time quite high. 2) Output steam pressure cannot be very high since the water and steam are kept in same vessel. 3) The steam received from fire tube boiler is not very dry.

Steam Boiler: Advantage & Disadvantage Fire Tube Boil

The following are advantages and disadvantages if the owner of power plant choose fire tube boiler as his boiler. Advantages of fire tube boiler: 1. The water is supplied in shell and outside tubes while hot gas is supplied inside tubes so the water volume can not be shaken easily when the fire tube boiler is …

Cornish Boiler: Definition, Parts, Working, Advantag

After Cochran, Locomotive, Scotch marine boiler, a Cornish boiler is another type of fire tube boiler.. This type of boiler works on very limited pressure which is up to 20 bar only.. It has a long horizontal cylinder with a single large flue containing the fire. Today we will study Definition, Parts or Construction, Working, Application, Advantages, and Disadvantages of Cornish Boiler.

Fire Tube Boiler - Construction, Types and Its Worki

Fire Tube Boiler Construction and Working Principle of Fire Tube Boiler. The construction of a water tube boiler can be equipped with cylindrical shell, vertical, firebox in the base, space for water in the center segment, and space for steam in the higher segment. A fire-grate is located at the fire-box base as well as coal is fired-up on the

Merits and Demerits of Water Tube Boiler over Fire Tu

Feb 22, 2018· The water tube boiler’s furnace area can be easily altered to meet the fuel requirements. Demerits of Water Tube Boiler over Fire Tube Boiler: It is less suitable for impure and sedimentary water, as a small deposit of scale may cause the overheating and bursting of the tube. Therefore, use of pure feed water is essential. They require

Advantages and Disadvantages of Water Tube Boilers--Z

Advantages and Disadvantages of Water Tube Boilers 2015-11-04 08:57:36. There are two main boiler types that people can choose from for their specific application: water tube boilers and fire tube boilers.Of the two, water tube boilers contain wider range than fire tube boilers and they are …

Firetube Boiler Advantages - Johnston Boil

Firetube Boiler Advantages. Firetube, Scotch Marine boilers have been used throughout the world for over a century and have been one of the mainstays behind process steam applications and industrial heating plants. The design of the current boiler products has been in place for well over 30 years. However, both market conditions and a demand

Advantages and Disadvantages of Fire Tube Boiler--Z

Fire tube boiler is relatively cheaper than water tube boiler. Disadvantages of fire tube boiler: 1. From the furnace combustion side, required time to fill water is longer than to increase temperature and pressure. 2. The efficiency of heat transfer (heat transfer efficiency) is bad enough because of the heat exchanger does not use thermal

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