Anti Corrossion Superheater And Reheater Energy Saving In Thermal Power Plant

Carbon Steel Superheater And Reheater For CFB Boilers In Power Plant

Why do we need superheater?
A superheater is a vital part of the a boiler system that is used to increase the overall efficiency of a thermal power plant. More specifically, it is a device which converts wet steam (saturated steam) into dry steam as dry steam contains more thermal energy.

What does a superheater do?
Superheater - Wikipedia
A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, steam engines, and in processes such as steam reforming.​

Details:

Product Introduction:
Functions and characteristics of superheaters and reheaters
functions of superheaters and reheaters:
Superheaters and reheaters are important parts for the heating surfaces, used to increase steam temperature, aiming to improve steam enthalpy and further to increase the thermal circulation efficiency for power station.
Superheaters work to heat surnatured steam to superheated steam with a certain tempetature. When boiler loads or other working conditions change, it is necessary to make sure superheated steam temperature to be normal, and within allowable range of temperature variation.
From the thermal circulation in power station, the original parameters of pressure and temperature is higher, the thermal efficiency of circulation is better, or the steam humidity of the steam turbine rear is too high, influencing its safety. While the superheaer steam temperature is limited by metal materials, at present, due to limitation of metal materials, superheated temperature for most power station boilers are still within the range of 540-555 dgrees, and to avoid the steam humidity of blade of steam turbine rear too big, thus middle reheating system is applied.
Functions of reheaters are to heat exhaust of steam turbine high pressure cylinder to the reheated temperature which is close or equal to superheated temperature, and then send them to middle pressure cylinder and low pressure to expand and work to increase the dryness of blace of steam turbine rear. Usually, the pressure of reheated steam is one fifth of that of superheated steam. Application of reheating system can increase the thermal efficiency for power stations by 4-5%.
So far in our country, units with capacity over 125mw all apply one time middle reheating system. Double reheating can increase again the thermal efficiency of circulation by 2%, but the system is very complicated, it is not applied for national units, but it is common for large boilers overseas.

Jiangsu Sat-Cham Energy Technology Co., Ltd.office address is located in the Chinese garden city, paradise on earth Suzhou, Suzhou Zhangjiagang Free Trade zone textile raw materials market, our company mainly provides new energy technology in the field of technology research and development, technical consulting, technology transfer and related technical services; Boiler accessories, metal pipe fittings, electrical equipment and mechanical equipment purchase and sale; Import and export of goods or technology.

We bring to our customer integrated services including boiler design, fabrication, installation, maintenance and replacement of boiler parts (including membrane wall, drum, header, superheater, economizer, evaporator, gen bank, H-fin economizer, spiral fin tube, air preheater, flue, heat exchanger etc.). HDB has domestic and international certifications, such as Class-A licenses for design and manufacture boiler, Certificate A1/A2 licenses for pressure vessel, ASME ‘S’, ‘U’, ‘NB’ stamp, ISO 9001, ISO3834, EN12952 etc. We fabricate boilers under GB, ASME, EN, IBR and other international codes.