Power Plant Overlay Inconel 625 Boiler High temperature Superheater
Coils
Superheater&Reheater, Custom Component For Boiler Superheater
Coil
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
temperature steam.
The accessory of high temperature radiant steam super heater in
boiler
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.
Reheaters
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.
Application:
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. Chemical corrosion.
2. Abrasive wear.
3. High temperature corrosion.
4. In the actual operation of various boilers, the serious thinning
of the tube wall is not caused by a single factor, but is often the
result of the above three kinds of corrosion. Because nco622 and
inco625 materials have strong high temperature oxidation
resistance, resistance to various super acid corrosion, excellent
strength and toughness at high temperature, and good
processability, It is usually used by customers for surfacing under
complex working conditions.
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, pressure,
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.
|
Details
| 1 | Material composition | Carbon steel, alloy steel or heat-resistant steel, collection boxes
and other supporting material. Tubes are customized types of
specifications. |
| 2 | Design pattern | Vertical or horizontal layout. |
| 3 | Advantages | Beautiful appearance, size, accuracy, first-class bending and
welding technology, first-class detection equipment. |
Design structure
ASME certificate boiler parts boiler superheater China factory
direct sell
1) Both Radiant-Convective and 100% Convective Available
2) Assemblies Completely Self-Supporting (No Intermediate Support
Brick Required
3) All Elements of Equivalent Length Ensuring Balanced Flow
4) Conservative Velocities Inside Tubes Assure Positive Cooling at
All Loads
5) Fully Drainable
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
performance.
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.
