100% Welding Joint Pt Test Boiler Spare Parts Superheater Used For
Waste Heat Recovery Boiler
Use of Superheaters in Industrial Boilers
Superheaters are used where only dry steam is required in a
process/machines such as Turbines. Any moisture content in a steam
in such cases happens to degrade or corrode the machine thereby
affecting its average operating life. So, superheater converts
low-quality steam to high quality for end users.
Sometimes, superheater is also needed when we need to transport
steam to far off places as there are some temperature losses during
Superheaters can be used in a steam engine where absolute dry steam
is needed to prevent wear and tear of engine parts.
In case of water tube boilers, hot gases will provide the required
temperature to produce superheated steam and superheater may be an
additional part of the furnace area. In other cases, separately
fired superheater may be required because gas turbine produced
gases are relatively cool.
Superheater&Reheater, Custom Component For Boiler
A superheater is a component that heats saturated steam in an
industrial boiler, turning it into superheated steam. Our
superheater guarantees that the superheated steam temperature will
fluctuate to within an allowable range (normally varies from 540°C to 500°C)when the boiler is over loaded.
Super heater types:
1. Radiant super heater: it is the earliest type of super heater
and it is located above or behind banks of water tubes to
protection them from direct flam or fire.
Parameters that increases the convection
a. Increasing the fuel-and air flow (combustion gas flow)
b. Increasing the mass flow rate of the steam
Radiation is mainly dependent on the flam temperature. as the steam
flow rate increases the exit temperature become lower.
Radiant super heater
They are placed exposed to the heat source whcih requires the
improvement of metal temperatures.
Radiant and convetive super heaters and reheaters are used for high
The accessory of high temperature radiant steam super heater in
It is made up of snake-like tubes (carbon steel, alloy steel or
heat-resistant steel, etc.) and collection boxes and other
supporting material. Tubes generally have φ32, φ38, φ42 or other
types of specifications, according to user's needs separately.
They are the sane as the super heaters but as their exit
temperature is a little bit less than super heaters and their
pressure is 20% -25% less than the super heater, they can stand
less quality material alloys.
Steam super heater is consisted of dense tube coils and is placed
in the flue under the tempearture 450ºC-1000ºC.
For power plant boiler capacity over 10Mpa, platen and coiled
superheater are usually adopted.
|1||Material composition||Carbon steel, alloy steel or heat-resistant steel, collection boxes
and other supporting material. Tubes are customized types of
|2||Design pattern||Vertical or horizontal layout.|
|3||Advantages||Beautiful 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
|2||JB/T1612 "boiler pressure test technical conditions. "|
|3||JB/T1613 "Technical specification for welding of pressure parts of
|4||JB/T1615"Technical specification for painting and packing of
|5||JB/T3375 "Rules for receiving acceptance of materials for boiler
• 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.
Send us required technical data, such as steam capacity, presure,
required temperature etc. We will design accordingly.
HD Boiler offers a best in class facility
For over 30years, Hua Dong Boiler has been consistently innovating
and improving our boiler superheaters and reheaters.The
improvements in bending,welding and design ensure our products meet
both Euorpean and American standards, ensuring a relabile
We are the qualified supplier for the following large boiler
manufacturers in China:
- Shanghai Boiler Works Ltd.
- Hang Zhou Boiler Group Co. Ltd.
- Dong Fang Boiler Group Co., Ltd.
- Wuxi Huaguang Industrial Boiler Co., Ltd.
- Jiangxi Jianglian Energy & Environment Co., Ltd.
- Suzhou Hailu Heavy Industry Co., Ltd.