SA192 Superheater And Reheater Seamless Steel For Suger Mill

Seamless Steel SA192 Superheater And Reheater For Suger Mill
 
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 its transportation.

• 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.

Boiler Superheater’s Manufacturing
 
Our superheaters are manufactured according to the ASME Regulations. HDB manufactures both coil type and shell type superheaters depending upon the type of boiler and boiler capacity.
 
Coil type superheaters design generally consists of 180o coils welded through the headers on both the sides. In a coil type designs steam is inside the coil and flue gases are outside the coil.
 
Shell type superheaters design generally used to superheat the steam electrically using special heating elements stacked in a shell and the steam flows over the heating elements.
 
Designing Parameters of Industrial Superheaters
-Boiler pressure
-Steam pressure
-Temperature requirement in the process
 
Superheater Arrangement, specification and material:

Arrnagement and specification:

The boiler has high and low superheaters, the HS is arranged in the flue gas duct after cyclone separators, and the LS is arranged in back-end vertical shaft. The saturated steam is introduced into the ceiling enclosure headers by eight φ108×5 saturated steam connecting tubes on the drum, and then into the lower temperature superheater through φ 42×4.0 tubes, after being heated by LS, goes into desuperheater for adjusting temperature, and then goes into HS through eight tubes of φ108×5, and sent to steam turbine through main steam valve after going into SH outlet header.

The LT superheater adopts contranatant arrangement and the HT superheater is downstream arrangement. The collection and distribution of steam adopts the way of width direction to improve non-uniformity of steam flowing and prevent local coils superheated due to steam deflection.

 
Material:
To ensure safety operation, the LT superheater uses SA210 Gr.A1 seamless steel tubes, and the HT superheater uses low-alloyed SA213 T22 seamless steel tubes.
 

Thechnical parameters: