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maximum pressure 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.

Comparison Between Fire Tube and Water Tube Boil

Jun 05, 2018· In Fire-tube boilers hot flue gases pass through tubes and water surrounds them. In Water-tube boilers water passes through tubes and hot flue gasses surround them. 2: These are operated at low pressures up to 20 bar. The working pressure is high enough, up to 250 bar in super critical boilers. 3

Fire Tube Boiler - Boiler and Mechanical Pow

The locomotive boiler is another of the fire tube types. It is a portable model of the type used to drive power steam locomotives. The simple vertical boiler fire tube is no longer used in large installations but is still well-liked in heating homes. Fire tube boilers are design up to maximum pressure of 350 PSI.

Hurst Three Pass Firetube Steam Boiler | LPE Seri

LPE Boiler Features. Welded steel fire tube boiler, the LPE has extra-heavy 13-gauge tubes for extended life. All tubes are sealed to the tube sheets by rolling and flaring. There are no welded tubes in the LPE. Thickest materials used in the industry Boiler shell is 5/16" thick boiler …

Types of High Pressure Boilers | Scienci

The National Fire Prevention Association and federal standards define a Type II steam boiler as one that produces high-pressure steam between 16 and 150 psig. A Type III steam boiler produces steam between 151 and 350 psig.

Factory owners must ensure the boiler

The owner of a boiler can be prosecuted and fined a maximum of $50,000 for operating the boiler:─ * without statutory examination or a valid certificate of fitness. * without direct supervision of a competent person. 2. FEATURES OF FIRE-TUBE BOILERS The fire-tube boilers are potentially dangerous as the steam pressures are high

Fire tube boilers are limited to a maximum design worki

The Locomotive boiler has; On Millier chart, the constant pressure lines; Maximum energy loss in a boiler occurs due to; The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by; For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler …

Fire Tube Boiler | Operation and Types of Fire Tube Boil

Mar 04, 2020· General maximum capacity of this type of boiler is 17.5 kg/cm 2 and with a capacity of 9 Metric Ton of steam per hour. In a fire tube boiler, the main boiler vessel is under pressure, so if this vessel is burst there will be a possibility of major accident due to this explosion.

ASME_Boiler_Tube_Thickness - Boiler Engineering Calculatio

ASME Boiler Tube Thickness Calculator. C = minimum allowance for threading and structural stability (see PG-27.4.3) D = outside diameter of cylinder E = efficiency (see PG-27.4.1) e = thickness factor for expanded tube ends (see PG-27.4.4) P = maximum allowable working pressure (see PG-21)

How Fire Tube Lancashire Boiler Works - Maintenan

Internal fire tube having 2 in number generally used. We can say it has two internal flow tubes whose diameter that is .4 times the size of the Cylindrical shell. The maximum working pressure is 16 bar. The steam capacity of this boiler is 9000kg/h. And the efficiency is 50 to 70%. So these are the specifications of the Lancashire boiler and now with the help of a diagram.

Boiler Formulas - Johnston Boil

Factor of Evaporation Water enters the boiler at 225°F. The boiler pressure is 100 psi and the boiler water temperature is 338°F. The latent heat is 881 Btu.

Fire Tube Boile

Steam pressure gauge shall be a compound gauge, vacuum range shall be from 0 to 30 inches hg, pressure range minimum of 1-1/2 (one and one-half) the maximum operating pressure of the boiler. The gauge shall have a siphon with pet-cock to isolate gauge for repairs/calibrating.

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zhulin@zozen.com

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

0086-510-68530066, +86-13506151292

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