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material choice for water tube boilers

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.

High-alloy Materials for Boiler Tub

resistance and/or high-temperature, high-strength materials. seamless stainless steel and nickel-based alloy tubes and pipes are our everyday passion and our history at salzgitter mannesmann stainless tubes. as early as 1885 reinhard and max mannesmann invented a rolling process for the

Water Tube Boiler Parts and Functions - Boilersin

Cited by: 3 D type water tube boiler. In the water tube boiler, the water and steam flow inside the tubes and the hot gases flow over the outside surfaces. Where as in fire tube boilers hot gases from combustion travels through the tubes. flue gases produced from furnace where fuel is burnt.

Chapter 14 Boilers - Pearson Educati

Boilers use a combination of radiation, convection, and conduction to convert heat energy into steam energy. Proper boiler operation depends on controlling many variables, includ- ing boiler feedwater quality, water flow and level in the boiler, furnace temperatures …

Selection and Analysis of Material for Boiler Pipes in

The problems of a material selection for making the boiler pipes in a responsible steam plant and the technology for their welding are considered in this paper. The boiler is screened, complex, radiating energetic plant, with the natural water circulation in the hanging steel structure.

Water Tube Boiler - Construction, Operati

What is the difference between a reboiler condenserFeb 11, 2019What are boiler water tubes made up of?Oct 26, 2018What is the difference between boiler grade steel andSep 13, 2015See more results Jun 10, 2017· A bundle of steel tubes: the front end of the boiler drum is connected to the uptake header (water box) by a short tube and the rear end is connected to the down take header (water box) by a long tube. In between the headers, a number of small-diameter steel tubes are fitted at an angle of 5° to 15° with the horizontal to promote the water circulation.

Why Boiler Designers Use Different Materials

Designers use materials starting from carbon steel, to low alloy steel, to high alloy steel, and then to stainless steel to meet the requirements of the increase in metal temperature of the tubes as the steam picks up temperature in superheaters.

Boiler Material - IB

This depends on the material used in the boiler shell & firebox. Most small loco boilers are made of copper and for these boilers the best stay material is also copper. This is to avoid wasting away in the water space due to electrolysis. This action takes place when dissimilar metals are in contact and submerged in the boiler water.

What are the materials of the pipes used in economize

File Size: 489KB Apr 20, 2018· Well there are a lot of different options. For the boiler’s themselves, they are carbon steel or ferritic alloys. These are used because they aren’t as susceptible to stress corrosion cracking from chlorides or sulfates. They are still vulnerable

Videos | Media | Navi

Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. Navien Videos. NFB-C Commercial Fire Tube Boiler. Navien NFB Fire Tube Boiler Silent Wholesaler Video.

Operation of water tube boilers explained - Bright H

Refractory material is used in the making of the furnace floor, burner wall and behind the water walls. The refractory material acts as an insulation, preventing heat from escaping. The superheater is located away from the furnace and in between the two boilers.

Characteristics of boiler feedwater - Lennte

Feed-water purity requirements therefore can vary widely. A low-pressure fire-tube boiler can usually tolerate high feed-water hardness with proper treatment while virtually all impurities must be removed from water used in some modern, high-pressure boilers. Only relatively wide ranges can be given as to maximum levels of alkalis, salt, silica

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

0086-510-68530066, +86-13506151292

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