ASME standard steam superheater tubes of a high pressure boiler Chinese product

Superheater Working Principle

1. Superheater is a subcritical boiler’s component that heat the saturated vapor, at constant pressure, so it becomes superheated steam.

2. Superheater technology has been used since the use of steam engines early 20th century. The main purpose is to increase the heat energy contained by the steam, so that increasing the thermal efficiency of the engine.

3. Until now the use of superheater is still very popular, especially in large water-tube boiler steam power plant.

Boiler Superheater in details

1. The superheater can be divided in two sections, primary and secondary, as in the boiler studied, where the superheater tubes are within the radiation zone. After nineteen years of service, the primary one showed some tube deformation, which had become greater when observed at the last inspection/maintenance shut downs.
2. This residual plastic deformation was observed on the outlet tube, attributed to differential dilatation, because of different temperatures, between the last two tubes, anchored by spacers, and causing buckling.
3. After that, in December 2001, when the boiler had twenty three years of service, a stress and metalographic analysis was made on an assembly removed from the boiler, involving yet dimensional inspection, nondestructive testing, hardness measurement and deposit examination.

Advantages of superheated steam (super heaters)

1. Work output is increased for the same quantity of steam.

2. Loss due to condensation of steam in the steam engine and is the steam mains is minimized.

3. Capacity of the plant is increased.

4. Thermal efficiency is increased since the temperature of superheated steam is high.

Technical Parameter

    Dehai Boiler is a manufacturer of A-class boiler(Power station boiler,industrial boiler,HRSG,waste-to-energy boiler,biomass boiler) and correlated A-class pressure parts intergrating the design,fabrication,installation,repair and mainteance.

Dehai has ISO9001:2008 certificate issued by France AFAQ-EAQA Ltd,A-class boiler manufacturing license,ASME S Stamp and U Stamp authorized certificate.

    Through effective management system and high quality products,Dehai became the qualified supplier of many famous boiler factories and energy companies and has won a lot of stable customers both domestic and abroad ,such as :Amec Foster Wheeler,Alstom,Dongfang Boiler,Harbin Boiler,Hangzhou Boiler,etc.

    Based on the business idea of "High quality for survival and perfect service for development",we shall care for customers' demand and keep improving our work permanently. To create Dehai brand,is to serve clients with our improved products and better performance.

    Dehai is located in Economic and Technological Development Zone,Zhangjiagang City,Jiangsu Province. S38 highway Zhangjiagang exit is about 1.5 kilometers to the north of our company and the traffic is very convenient.