24-11-2016· Fire tube boiler consists of a vertical, cylindrical shell, equipped with a fire box in the bottom, water space in the middle portion and steam space in the upper portion. The fire grate is placed at the bottom of the fire box and coal is fired at the fire box. An ash pit is located at the bottom of the grate to collect the ash of burnt coal, which is periodically removed.
Overview19-04-2018· Well there are a lot of different options. For the boilerâ€™s themselves, they are carbon steel or ferritic alloys. These are used because they arenâ€™t as susceptible to stress corrosion cracking from chlorides or sulfates. They are still vulnerable
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Sandvik superheater tube and reheater tube materials cover all types of fuel, such as coal, gas, oil, black liquor and biomass. The Sandvik program also includes composite tubes consisting of two different alloys fully bonded together. Increased efficiency in coal-fired power boilers
19-03-2016· One is known as fire tube boiler and the other one is known as water tube boiler. These boilers is largely used in power development and other industrial like sugar industries, cotton industries etc. for steam generation. The main difference between fire tube and water tube is that in fire tube boiler the flue gases flow in the tubes and water flows from the shell and in water tube boiler, water â€¦
The super heater (heat exchanger) is used to increase the temperature of the steam. These are bundles of high strength tube which can bear temperature 600C Depending upon the material of tubes Mostly SA-213 is used.
The boiler commonly used in a thermal plant are_____. a. Water tube type b. Fire tube c. Both (a) & (b) d. None of these View Answer / Hide Answer. ANSWER: c. Both (a) & (b). Q2. Water to the boiler is at_____. a. Atmospheric pressure b. Slightly more than atmospheric pressure. c. More than steam pressure in the boiler. d. Any pressure. View Answer / Hide Answer. ANSWER: c. More than steam â€¦
Heating boilers are also classified as to the method of manufacture, i.e., by casting (cast iron boilers) or fabrication (steel boilers). Those that are cast usually use iron, bronze, or brass in their construction. Those that are fabricated use steel, copper, or brass, with steel being the most common material.
Packaged boiler is the most common and efficient type of fire tube boiler used in industry to produce steam and hot water. This boiler delivers to site as a whole package factory assembled. The package boiler only requires electricity, water, steam and fuel connections and it is ready to produce steam. Package boiler has small combustion space and high heat release rate that is why it produces faster â€¦