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Steam Superheating Coils Of 12Cr1MoVG For Maintenance And Replacement

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Steam Superheating Coils Of 12Cr1MoVG For Maintenance And Replacement

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Brand Name :	HDB
Model Number :	Superheating coils
Certification :	ISO, ASME, EN
Payment Terms :	L/C,T/T
Delivery Time :	60-150Days

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Steam Superheating Coils Of 12Cr1MoVG For Maintenance And Replacement

Steam Superheating Coil Of 12Cr1MoVG For Maintenance And Replacement

Description

Superheater
Fossil fuel power plants often have a superheater section in the steam generating furnace.The steam passes through drying equipment inside the steam drum on to the superheater, a set of tubes in the furnace. Here the steam picks up more energy from hot flue gases outside the tubing, and its temperature is now superheated above the saturation temperature.

1. Superheater is a device that heats saturated steam into superheated steam with a certain temperature.
2. After heating saturated steam into superheated steam, the work capacity of steam in the turbine is increased, that is, the useful enthalpy of steam in the turbine increases, thereby improving the cycle efficiency of the heat engine.
In addition, the use of hot steam can also reduce the exhaust humidity of the steam turbine, avoid the corrosion of the turbine blades, and create favorable conditions for further reducing the exhaust pressure and safe operation of the steam turbine.

According to the installation mode in the boiler, the serpentine tube panel can be generally divided into two types: vertical suspension type and horizontal suspension type. The vertical suspended serpentine tube panel is generally a single-layer structure, which is mainly used in the high-temperature section of the superheater and reheater. The end of the tube panel is directly connected with the pipe joint of the header, suspended and arranged in the longitudinal direction of the header, and penetrated the ceiling of the furnace chamber, and sealed with it through the accessories on the tube panel; The horizontal suspended serpentine tube panel, most of which are of double-layer structure, is fixed and suspended by water-cooled hanging tube in the middle, and is generally used in the low temperature section of superheater and reheater and the serpentine tube of economizer.

Steam Superheating Coils Of 12Cr1MoVG For Maintenance And Replacement

There are different types of super heaters with advantages and disadvantages as below:
Differences

Type	Advantages	Disadvantages	Supporting method
Pendant-type	1.Firm structural support	1. Flow blockage by condensed steam 2. Needs slow restart to purge the water that accumulates in the bottom.	supported from above
Inverted-type	1.Proper drainage of the condensed steam	1. Lack the structural rigidity, especially in high speed gas flow	Supported from below
Horizontal -type	1. Proper drainage 2. Good structural rigidity.	1. They do not view the flam directly so they are mainly from the convective type	Usually supported in the vertical gas ducts parallel to the main furnace.

For over 30 years, Hua Dong Boiler has been consistently innovating and improving our boiler superheaters and reheaters. The improvements in bending, welding and design ensure our products meet both European and American standards, ensuring a reliable performance.

Steam Superheating Coils Of 12Cr1MoVG For Maintenance And Replacement

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