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Zhangjiagang HuaDong Boiler Co., Ltd.
Zhangjiagang HuaDong Boiler Co., Ltd.
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Customized Nickel Base Superheater And Reheater With Shield

Zhangjiagang HuaDong Boiler Co., Ltd.
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Zhangjiagang HuaDong Boiler Co., Ltd.
Province/State: Jiangsu
Country/Region: China
Tel: 86-512-58666196
Contact Person:
Miss Sandy Chen

Customized Nickel Base Superheater And Reheater With Shield

Brand Name : HD BOILER
Model Number : Superheater and Reheater
Certification : ISO9001 , SGS , TUV , ASME , EN
Place of Origin : China
MOQ : 1 set / 10tons
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Supply Ability : 1500 Tons / Month
Delivery Time : 50 ~ 100 Days
Packaging Details : Seaworthy packing
Material : T91 / T92
Welding material : Nickel base
Type : Coils
Dimension : Customized
Customer : Global
Quality control : Solid / Enhanced solution
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Exported product coils superheater serpentuator equipped with shield anti-corrosion nickel based welding material


Product Function


1.The function of the superheater in the thermal power plant is to remove the last traces of moisture ( 1 to 2%) from the saturated steam coming out of boiler and to increase its temperature sufficiently above saturation temperature.


2.The super-heating heating raises overall overall cycle efficiency efficiency as well as avoids too much condensation in the last stages of the turbine which avoids the blade erosion.


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


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


1.The function of the re-heaters is to resuperheat the partly expanded steam from the turbine.

This is done so that the steam remains dry as far as possible through the last stage of the turbine.


2.Location: Before or after the convective superheater in the convective zone of utility boilers. In modern high pressure boilers, reheaters are generally in two sections.


3.The primary section is placed in the convective zone and secondary section is placed just at the furnace exit hanging from the top.


4.The design consideration for reheaters are similar to those for superheaters.


5.It having same output temperatures but steam pressures are about 20-25% of those in superheaters. Hence lower grade steel alloy can be used for reheaters.


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.


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.


Details


1Material compositionCarbon steel, alloy steel or heat-resistant steel, collection boxes and other supporting material. Tubes are customized types of specifications.
2Design patternVertical or horizontal layout.
3AdvantagesBeautiful appearance, size, accuracy, first-class bending and welding technology, first-class detection equipment.

Manufacturing and acceptance criteria


1) JB/T1611 " Technical specification for manufacturing of boiler pipes."

2) JB/T1612 "boiler pressure test technical conditions. "

3) JB/T1613 "Technical specification for welding of pressure parts of boiler."

4) JB/T1615"Technical specification for painting and packing of boiler."

5) JB/T3375 "Rules for receiving acceptance of materials for boiler construction."


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Product Tags:

reheater in power plant

      

convection superheater

      
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