|Place of Origin:||China|
|Minimum Order Quantity:||1 Set / Sets 10tons|
|Packaging Details:||Seaworthy Packing|
|Delivery Time:||30 Days|
|Payment Terms:||L/C, T/T, Western Union, MoneyGram|
|Supply Ability:||500 Tons per Month|
|Surface Treatment:||Painted||Range of Applications:||Power Station|
|Style:||Horizontal and Vertical||Manufacturing Level:||A|
An air preheater (APH) is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process. They may be used alone or to replace a recuperative heat system or to replace a steam coil.
In particular, this article describes the combustion air preheaters used in large boilers found in thermal power stations producing electric power from e.g. fossil fuels, biomasses or waste.
Purpose of Preheaters
The purpose of the air preheater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas. As a consequence, the flue gases are also conveyed to the flue gas stack (or chimney) at a lower temperature, allowing simplified design of the conveyance system and the flue gas stack. It also allows control over the temperature of gases leaving the stack (to meet emissions regulations, for example).
|Material||Carbon steel, Alloyor equivalent|
|Structure||Vertical or Horizontal|
|Tubes||Enameled seam or seamless tubes|
|Tube OD||customers required|
Advantages of Using Air Heater
The recovery of waste heat from the flue gas and heating the air required for Boiler In an air heater gives the following advantages.
a) The Boiler efficiency is increased.
b) More stable combustion in furnace.
c) The combustion is intensified with the use of hot air.
d) Lower grades of coals can be burnt efficiently with hot-air.
e) The use of hot air, improves the heat transfer rate and so less heat transfer area will be required.
f) The combustion is made complete with negligible amount of carbon in ash.
g) Faster load variations are possible.
h) The coal can be dried effectively for easy pulverization and combustion.
1. Fabrication area of 200,000 square meters
2. 150 Engineers
3. 400 Coded welders
4. 60 Licensed Inspectors(NDT Level-III instructors)
5. Class-A Licenses for Design and Manufacture Boiler
6. ISO 9001:2008 Quality System
7. ASME Certificate of Power Boilers
8. ASME 'S','U' and NB stamp authorization
Established in 1985,Zhangjiagang Hua Dong Boiler Co.,Ltd.(trading as HD Boiler),produces power plant; industrial; waste heat; waste incineration; biomass; organic heat carrier and electric steam boilers. Coupled with a comprehensive range of heating surfaces, HD Boiler brings to the market a unique service including boiler design , fabrication, installation, maintenance and replacement of boiler pressure parts.
Contact Person: Mr. Edwin zhao
Business Phone: +86-17715177007
Skype: Edwin HD Boiler