ASME Standard 60mm Biomass Power Plant Carbon Steel Superheater Coil

ASME Standard Biomass Power Plant Carbon Steel Superheater Coil With Anti Corrosion

Boiler Superheater Coil

Superheater is a part of a boiler that heats the steam from the saturation temperature to the overheating temperature. It is also called a steam superheater.Superheater can be divided into convective type, radial type and semi-radial type according to heat transfer mode; According to the characteristics of the structure, it can be divided into serpentine pipe type, screen type, wall type and wall type.They are made up of parallel pipes and inlet and outlet manifold.

If the convective superheater, radiant superheater and semi-radiant superheater are properly combined and configured, the outlet steam temperature can change less when the load and combustion conditions change.The heat absorption and steam flow rate of the parallel pipes in the superheater stack will be different in operation.In order to avoid excessive temperature in individual pipes, the superheater is divided into several pipe groups in large boilers. Steam of each pipe group is mixed with a collecting box outside the furnace and the steam guide pipe is used to make each pipe group transposition, so as to avoid excessive temperature difference between each pipe.

Superheater

Generally 30 ~ 60 mm.The most common type of flow superheater is serpentine tube.It has a more intensive tube group, decorate in 450 ~ 1000 ℃ flue of the flue gas temperature, flue gas of vertical and lateral erosion.The flue gas mainly transfers the heat to the pipe by convection, and some of the heat is absorbed by radiation.The plate-type superheater consists of a plurality of tube screens, arranged in the upper part of the furnace or at the outlet, belonging to the radiation or semi-radiation type superheater.The former absorbs radiant heat from the furnace flame, while the latter also absorbs some convection heat.In power station boilers above 10 mpa, both screen type and serpentine type superheater are commonly used to increase heat absorption.The wall superheater applied on the inner wall of the furnace is radiant superheater, which is seldom used.The wall-mounted superheater is used in the large capacity power station boiler to form the wall of the furnace top and convection flue.The picture shows the arrangement of several superheater.The small capacity industrial boilers with superheater can meet the requirements only with single stage superheater.

Most industrial boilers do not have superheaters because many industrial processes and living facilities require only saturated steam.In power stations, locomotives and Marine boilers, superheater is usually installed to improve the circulating thermal efficiency of the whole steam power plant.

Superheater Coil Function&Features

HDB thermal efficient steam super heater for coal fired boilers
Specification:
Super heaters are the one of the most important boiler sapre parts that improves the thermal efficiency. High temperature steam boiler radiant super heater is usually applied in high pressure power plant boiler.

In the boiler, the role of super heater is to heat the saturated steam to a certain temperature of superheated steam to increase power plant efficiency. Repeater essentially further improves the thermal power plant cycle efficiency.

Steam Super heater Coils: Super heater coils are used in a boiler to generate saturated steam. The super heater coils are specially used in Boilers of Power plant. We manufacture Super heater coils in various grades of Alloy steel and in stain less steel tubes with or without support & Header as per customer's drawing.

Changes in boiler operating conditions, such as load level, fuel change, combustion condition change, etc., all have an impact on superheater outlet steam temperature, so in power station boilers there are means to adjust boiler outlet steam temperature to make it stable at the specified value.Commonly used means are:

(1) with water jet or surface type temperature reducer directly adjust the steam temperature;

(2) with the swing burner to change the temperature of the furnace outlet smoke;

(3) with smoke recirculation adjustment superheater heat absorption.When the boiler load increases, the temperature rise value of the inlet and outlet steam of the flow superheater increases, while the temperature rise value of the radiant superheater decreases.

Details

Design structure

1. heating saturated steam, temperature up to 900 degree C.

2. high efficiency, >90%.

3. high speed heating.

4. design with stainless steel.

5. long design service life, 15 years.

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

Huadong Boiler has been specializing in producing custom boiler components for 34 years since 1985. Our boiler components have been used in industrial steam generators, steam boilers, hot water boilers, electric steam boilers, steam pressure reducing stations,etc