Sign In | Join Free | My frbiz.com
frbiz.com
Products
Search by Category
Home > Boiler Parts >

Seamless Steam Reheater , Water Reheater Gas Fired Boiler Pipes High Pressure

Categories Reheater In Boiler
Brand Name: Dehai Boiler
Model Number: Reheater
Certification: ISO9001 , SGS , ABS , ASME
Place of Origin: China
MOQ: 10 Tons
Price: Negotiable
Payment Terms: L/C, T/T
Supply Ability: 800 Tons / Month
Delivery Time: 45 Days
Packaging Details: Seaworthy packing
Type: Boiler Tube, Straight and Bend
Usage: Heating element
Pressure: High Pressure
Material: Carbon steel
Situation: New
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
Submit Buying Request
  • Product Details
  • Company Profile

Seamless Steam Reheater , Water Reheater Gas Fired Boiler Pipes High Pressure

High Quality Seamless Gas-fired Boiler Super heater And Re heater steam pipes


High Quality Seamless Reheater


1. As the name suggests reheater, it reheat the steam so that the temperature can be raised further and work done by IPT can be increased

2. generally after high pressure turbine the exhaust pressure and temperature will be 33–35kg/cm2 and 340–345degree C

So in order to increase the temperature of HP exhaust it is sent to reheater ,so flue gas passing over the tubes makes the steam to attain the temp back around 530–540degree C.

3. Now based on boiler design the reheater placement is decided ,for PF boiler it's between first pass and second pass of boiler and in cfbc rehater section is completely in 1 St section of second pass boiler


Reheater Function


1. Therefore the number of reheat stages can not be many as the pressure drop will reduce efficiency of thermal cycle.The steam pipes and reheater coils are to be so designed to limit the drop to 2–3%.

2. The control valves in reheat steam path is not desirable.Systems using HP LP bypass require these valves to control steam flow during bypass operation.

3. The efficiency of the Reheat cycle can be improved by increasing the pressure and temperature of steam entering into the turbine. As the initial pressure increases the expansion ratio of the turbine also increases and the steam becomes quite wet at the end of expansion.


Main Advantage


The main advantage of reheat cycle is to reduce the specific consumption and consequently reduce the size of the boiler and other auxilaries for the same power.The reheat cycle is preffered for the high capacity above 100 MW plant.


Differences


TypeAdvantagesDisadvantagesSupporting method
Pendant-type1.Firm structural support1. Flow blockage by condensed steam 2. Needs slow restart to purge the water that accumulates in the bottom.supported from above
Inverted-type1.Proper drainage of the condensed steam1. Lack the structural rigidity, especially in high speed gas flowSupported 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 typeUsually supported in the vertical gas ducts parallel to the main furnace.

Ball through



Iron Frame Package


Product Tags:

reheater in power plant

  

water reheater

  
Quality Seamless Steam Reheater , Water Reheater Gas Fired Boiler Pipes High Pressure for sale
Send your message to this supplier
 
*From:
*To: Zhangjiagang Dehai Boiler Co., Ltd
*Subject:
*Message:
Characters Remaining: (0/3000)
 
Inquiry Cart 0