natural circulation box type boiler

Contact Us

Other Links

Product thermal capacity: 0.7 - 14 MW

Working pressure: 0.7 - 1.25 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, hospital, hotel.

Introduction

WNS series horizontal internal combustion boiler is classic 3-pass wetback oil/gas fired boiler. After fuel is atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, called 1st pass; the high temperature flue gasses are collected in reversal chamber and then enter 2nd pass, which is grooved tube bundle area through heat convection, air temperature gradually falls and flows to front smoke box and enter 3rd pass, which is done in the smooth tube bundle area, and then through back smoke box lead to chimney and exhausted to the atmosphere.

Technical Advantages

Digitized Manufacture

The key processes including material cutting, rolling, drilling are made by advanced CNC machining process to reduce the assembly stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine with tidy and beautiful look.

Easy Operation and Maintenance

Fully intelligent operation, with automatic adjustment and protection of burning, water level, temperature and steam pressure. The smoke box door uses the hinge structure for easy inspection, inventory and cleaning.

Long Service Life

The way to weld Smoke tube and tube sheet is to first expand to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boiler service life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint are test by radiographic inspection.
Fin tube uses ND steel or stainless-steel material to avoid corrosion in the low temperature.
Inspection stops are set up to guarantee the sequence of expanding and welding to avoid cracking of the tube sheet holes.

Less Fuel Consumption

High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ and reduce heat lost.
Sufficient steam storage room and heating area to generate high quality steam and high thermal power.
Condenser is added to recycle the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce flue gas emission temperature and increase the thermal efficiency over 98% and save operating cost.

Natural Gas - Boilers - Heaters - The Home Dep

Get free 2-day shipping on qualified Natural Gas, Boilers products or buy Heating, Venting & Cooling department products today with Buy Online Pick Up in Store.

Wall Hung Boiler manufacturers & suppliers - Mad

China Wall Hung Boiler manufacturers - wholesale 2019 high quality Wall Hung Boiler products in best price from certified Chinese Boiler wholesalers, Wall Screws manufacturers, suppliers and factory on Made-in-China.com

DRUMLESS-TYPE VERTICAL WATER TUBE NATURA

1971-7-20 · A drumless-type vertical water tube natural circulation boiler, whose convective shaft is annular in horizontal cross section and disposed in the space defined externally by the internal waterwall of the boiler furnace which is annular in its horizontal cross section, the space defined by the convective shaft accommodating platforms for servicing the boiler, this being instrumental for

Chapter 9 Boilers - NAVY B

2016-7-4 · All of the boiler fittings discussed are important and must be operated and maintained properly to operate a boiler safely. 2.1.0 Air Cock An air cock is located in the uppermost steam space of a boiler, as shown in Figure 9-2. This design allows for air to enter and escape during filling and draining of the boiler.

Modeling of a Coal-Fired Natural Circulation Boile

Modeling of a natural circulation boiler for a coal-fired thermal power station is presented here. The boiler system is divided into seven subcomponents, and for each section, models based on

Nebraska Boiler | Power

Since 1921, Nebraska Boiler has provided the widest range of natural circulation watertube boiler designs, including D-type, A-Type, and O-Type configurations. As one of the few companies to offer all three types of boilers, Nebraska Boiler has developed extensive and highly specialized expertise in engineering, design, and manufacturing.

METHODS OF STEAM GENERATION; STEAM BOILER

2018-6-21 · Once through boiler type of boiler, in which water is input at one side, and steam is Forced circulation boiler the circulation is achieved by a circulation pump Natural circulation boiler the circulation is achieved by the difference in density of the • Steam boilers of fire box type

Boilers - energetika.cvut.

2018-6-5 · spaced water tubes creating boiler walls and heating surfaces located in flue gas flow. This can be classified depending on type of circulation used to generate steam as • Natural circulation boilers • Forced circulation boilers • Once-through design (zero circulation) boilers In circulation boilers the evaporator tubes are

Forced circulation or natural circulation exhaust ga

Hi everyone, I have a gas engine that should be equipped with an exhaust gas boiler. How can I choose the most favorable type boiler between forced circulation and natural circulation boiler, when I have around 0.01 kg/s mass flow of the exhaust gas from 600°C exhaust gas temperature.

Boilers and its types & components - SlideSha

Boilers and its types & components Lamont, Benson boiler • In natural circulation type of boilers, circulation of water in the boiler takes place due to natural convection currents produced by the application of heat • Examples: Lancashire, Babcock and Wilcox The shell and fire box both are hemispherical. The fire box and combustion

Nebraska Boiler | Power

Since 1921, Nebraska Boiler has provided the widest range of natural circulation watertube boiler designs, including D-type, A-Type, and O-Type configurations. As one of the few companies to offer all three types of boilers, Nebraska Boiler has developed extensive and highly specialized expertise in engineering, design, and manufacturing.