Active Member
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[China]
Address: No.1, Huangqi Road, Li village
Contact name:Edwin
Zhangjiagang Dehai Boiler Co., Ltd |
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Biomass Steam Boiler Accessories Steam Drum steam drum level measurement
Types of Steam Drum
1. Three drum/ Four drum boilers - Are the veterans of the normal
day boilers, although they are still used in some industries.
2. Bi drum boiler - are used for power generation and steam
generation both. For power generation they are used now seldom and
are replaced by single drum boilers as the bi drum boilers are
non-reheat units. So, due to the high heat rate of the plant a
single drum boiler or a once through boiler is more feasible. In
process steam generation the bi drum boilers are used commonly as
they can adapt to the high load fluctuation and respond to load
changes.
3. Single drum boiler- used mainly for the power plants for power
generation. The pressure limit for single drum boilers is higher
than that of the bi drum boilers as the stress concentration is
reduced to a greater extent. There exists only one drum and the
downcomers are welded to it. Single drum boilers are suitable and
can adapt to both reheat and non-reheat type of boilers. They can
be designed as Corner tube boiler where the frame is not required
as the downcomers itself serves the purpose of it and also they are
designed as top supported where the whole boiler assembly needs an
external frame and supported by top drum.
Features
1. Chinese Famous Brand.
2. Premium Quality, Competitive Price.
3. Fast Delivery, Excellent After-sale Service.
4. Certificate ISO9001, ASME, ISO14001, SGS.
5. Compact structure, easy to install.
6. The exhaust gas passes through the force convection tube bundle,
improving the efficiency of the boiler.
Working Progress
1. The separated steam is drawn out from the top section of the
drum and distributed for process.
2. Further heating of the saturated steam will make superheated
steam normally used to drive a steam turbine.
3. Saturated steam is drawn off the top of the drum and re-enters
the furnace in through a superheater.
4. The steam and water mixture enters the steam drum through riser
tubes, drum internals consisting of demister separate the water
droplets from the steam producing dry steam. The saturated water at
the bottom of the steam drum flows down through the downcomer pipe.
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