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High Temperature Carbon Steel Superheater/Reheater Coil Tube Boiler Spare Parts

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High Temperature Carbon Steel Superheater/Reheater Coil Tube Boiler Spare Parts

Brand Name : HD Boiler

Model Number : Superheater and Reheater

Certification : ISO, SGS. ASME

Place of Origin : China

MOQ : 1 Set

Delivery Time : 30 Days

Packaging Details : Sea worthy Packing for Export

Product Name : Superheater/Reheater Coil

After-sales service provided : On-line Support

Application : Boiler System

Packing : Seaworthy Packing

Delivery Port : Shanghai

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High Temperature Carbon Steel Superheater/Reheater Coil Tube Boiler Spare Parts



Functions and characteristics of superheaters and reheaters

Superheaters and reheaters are important parts for the heating surfaces, used to increase steam temperature, aiming to improve steam enthalpy and further to increase the thermal circulation efficiency for power station.

Superheaters work to heat surnatured steam to superheated steam with a certain tempetature. When boiler loads or other working conditions change, it is necessary to make sure superheated steam temperature to be normal, and within allowable range of temperature variation.

From the thermal circulation in power station, the original parameters of pressure and temperature is higher, the thermal efficiency of circulation is better, or the steam humidity of the steam turbine rear is too high, influencing its safety. While the superheaer steam temperature is limited by metal materials, at present, due to limitation of metal materials, superheated temperature for most power station boilers are still within the range of 540-555 dgrees, and to avoid the steam humidity of blade of steam turbine rear too big, thus middle reheating system is applied.
High Temperature Carbon Steel Superheater/Reheater Coil Tube Boiler Spare Parts
Functions of reheaters are to heat exhaust of steam turbine high pressure cylinder to the reheated temperature which is close or equal to superheated temperature, and then send them to middle pressure cylinder and low pressure to expand and work to increase the dryness of blace of steam turbine rear. Usually, the pressure of reheated steam is one fifth of that of superheated steam. Application of reheating system can increase the thermal efficiency for power stations by 4-5%.

So far in our country, units with capacity over 125mw all apply one time middle reheating system. Double reheating can increase again the thermal efficiency of circulation by 2%, but the system is very complicated, it is not applied for national units, but it is common for large boilers overseas.


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.

Product Tags:

carbon superheater and reheater

      

ASME superheater and reheater

      

Carbon Superheater And Reheater

      
Wholesale High Temperature Carbon Steel Superheater/Reheater Coil Tube Boiler Spare Parts from china suppliers

High Temperature Carbon Steel Superheater/Reheater Coil Tube Boiler Spare Parts Images

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