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| Categories | Superheater Coil |
|---|---|
| Brand Name: | HDB |
| Model Number: | Superheating coils |
| Certification: | ISO, ASME, EN |
| Place of Origin: | Jiangsu, China |
| MOQ: | 20 Tons |
| Payment Terms: | L/C,T/T |
| Delivery Time: | 60-150Days |
| Packaging Details: | Steel Frame |
| Product Name: | Steam Superheating Coils |
| Material: | 12Cr1MoVG |
| Application: | Maintenance and Replacement |
| Standard: | ASME |
| Tube Bending Technique: | Cold/Hot Bending |
| Size: | 32mm*4mm |
| Company Info. |
| Zhangjiagang HuaDong Boiler Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
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.
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.
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