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how to convert magnetite to hematite on boiler tubes

Product Thermal Capacity: 1 - 20 t/h

Working Pressure: 0.7 - 2 Mpa

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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.

Reducing Corrosion and potential Boiler Failure wi

2.1. Pre-boiler corrosion – Metal transport to boiler from external equipments Pre-boiler corrosion will include corrosion in all steam – condensate network and also in boiler feed water section. Therefore corrosion in all areas that at the end will impact in higher iron or copper concentrations arriving to boiler will be included in

How could we convert magnetite to hemati

Transformation of magnetite to hematite and its influence on the dissolution of iron oxide minerals Journal of Metamorphic Geology Vol. 16, Iss. 3, May 1998, pp. 415-423

energy saving technology of zbg gas boiler heati

how to convert magnetite to hematite on boiler tubes 2018-8-6 · how to convert magnetite to hematite on boiler tubes. 2016-06-14 Published by: Cindy 0 . As a 70 years experience of boiler manufacturer, ZG provide various type of energy-saving boilers, like gas fired boiler,oil fired boiler, biomass fired boiler, CFB boiler, industrial

Dont let those boiler tubes fail again | Power Engineeri

Dont let those boiler tubes fail again. Hydrogen damage affects both the mechanism and rate of magnetite growth.3-6 The rate of magnetite growth changes from parabolic (protective) to linear

NDT Supp

At these elevated temperatures, stainless steel boiler tubes will produce magnetite on the inside surface of the tube. A typical arrangement of these tubes is shown in the pictures below. When the boiler is taken off-line and the boiler tubes cool, the internal magnetite …

water tube horizontal steam boilers - Queen of She

Jul 19 2019 · It is a fire tube boiler (flue gases generated by the combustion of fuel that will be sent through the tubes surrounded by water). Lancashire Boiler. It is a fire tube horizontal internally fired and natural circulation boiler stationary and low-pressure boiler. Since it is a low-pressure boiler steam production will be less.

Magnetite build-up in Boiler Tubes - General Corrosion Topi

Jan 08, 2011· The stainless steel tubes are attached to a mild steel bracket at one end and a small cast steel (coated with titanium nitride) bracket at the other. I have a theory that the chromium oxide coating on the stainless steel tubes is attracting the particles of magnetite due to the 'magnetoelectric effect' of the chromium oxide.

Electromagnetic Filtering of Magnetite from Steam Boil

steam boiler system. Magnetite is a product of the iron oxide called Hematite. It is formed on the steam side of the boiler tubes under pressure and high temperature in the presence of water and can be expressed by the following equation. Fe + 4 Fe 2 O 3 → 3 Fe 3 O 4 So if …

How magnetite layer is useful in boiler corrosion - Answe

Magnetite Layer is developed after essential chemical treatment. For instance, hydrazine and sodium sulfite are the most broadly chemicals. The presence of this layer has as result the

Magnetite in boiler tubes - Chemical process engineeri

File Size: 602KB Nov 12, 2004· Magnetite in boiler tubes Magnetite in boiler tubes radiojulie (Industrial) (OP) 11 Nov 04 08:14. I have a theory that the chromium oxide coating on the stainless steel tubes is attracting the particles of magnetite due to the 'magnetoelectric effect' of the chromium oxide. For this to occur the chromium oxide needs to be in the presence of

high presser boiler hematite magnetite le

File Size: 629KB high presser boiler hematite & magnetite lear. Industrial horizontal steam boiler price is influnced by many factors.We need know the details of how to convert magnetite to hematite on boiler tubes, for example capacity, pressure, etc,please contact online service to know more. Free Chat

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