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16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel

16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel

  • 16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel
  • 16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel
  • 16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel
  • 16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel
16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel
Product Details:
Place of Origin: China
Brand Name: HD Boiler
Certification: ASME, SGS, ISO9001
Model Number: Superheater and reheater
Payment & Shipping Terms:
Minimum Order Quantity: 1 Set
Packaging Details: Sea worthy Packing for Export
Delivery Time: 40 Days
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Detailed Product Description
Type: Natural Circulation Application: Boiler Maintaince,Boiler Pipe,Heating Element
Material: Steel,heat Resistant Steel Usage: Industrial,Power Station,Thermal Power Plant/station Boiler
Fuel: Coal-fired Name: Superheater Tube
High Light:

Reduction Steam Superheater Coil

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16.7MPa superheater in boiler

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16.7MPa superheater in boiler

 

Boiler Superheater and Reheater as heating system

 

 

 

Description

 

Summary

 

For power plant boiler, it is a crutial way to increase thermal economy of thermal power station by improving parameter of superheated steam. The increase of superheated steam parameters are limited by metal materials. The design of superheaters must make sure that the temperature of outer wall of heating surface pipes is lower than allowable temperature of oxidation resistance of steel, and meanwhile make sure its mechanical strength. with the development of metal material used in boilers, pwoer station boilers in our country already generally apply high pressure, high temperature(9.8MPa, 540 degrees) and superhigh pressure parameters(13.7 MPa, 540 and 555 degrees), and have developed subcritical pressure parameters(16.7MPa, 540 and 555 degrees). Now lots of boilers apply supercritical pressure parameters(24.5MPa, 540-570 degrees), and even very few units apply higher pressure and temperture parameters.

 

With the increase of steam pressure, in order to reduce the steam humidity of steam turbine tail as well as further improve the thermal economy of power station, middle reheating system is widely used in high parameters power station, e.g. sending the exhaust of the high pressure cylinder in steam turbine again back to be re-heated in the boiler to high temperature, and then re-sending them back to the medium-pressure and low-pressure cylinder of the steam turbine, expanding and working. The element for reheating is called reheater.

16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel 0

Details

 

• Superheating raises overall efficiency as well as avoids too much condensation in last stages of turbine which avoids blade erosion.

The heat of combustion gases from furnace is utilised for removal of moisture from steam and to superheat the steam.

Super-heaters ususlly have several tube circuits in parallel with one or more return bends,connected between headers.

Heat from the hot gases to the vapour in the surperheater is transferred at high temperatures.

Therefore promary section of superheater is arranged in counterflow and secondary section in parallel flow to reduce the temp.stressing of the tube wall.

 

Principle

 

• Principle of superheater is similar to steam generating tubes of boiler.

The hot gases at high temperature sweep over superheater tubes and raise the temperature of steam which magnitude depends upon exit gas temperature leaving the superheater and gas velocity.

16.7MPa Reduction Steam Superheater Coil Heat Resistant Steel 1

Application

 

use for heating saturated steam, steam temperature could be up to 900 degree C.

Superheater Capacity Upgrades to Increase Power Generation

 

Send us required technical data, such as steam capacity, presure, required temperature etc. We will design accordingly.

 

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.

Contact Details
Zhangjiagang HuaDong Boiler Co., Ltd.

Contact Person: Miss. Sandy Chen

Fax: 86- 512-58774453

Send your inquiry directly to us (0 / 3000)

Contact

Address: Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China

Factory Address:Address: N0.1, Dongli Road, Donglai, Zhangjiagang City, Jiangsu Province, China