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Heat Exchanger Coal Boiler Superheater And Reheater For Generating Furnace

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Heat Exchanger Coal Boiler Superheater And Reheater For Generating Furnace

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Brand Name :	HD BOILER
Model Number :	Superheater and Reheater
Certification :	ISO9001 , SGS , TUV , ASME , EN
Price :	Negotiable
Payment Terms :	L/C, T/T, Western Union
Supply Ability :	1500 Tons / Month
Delivery Time :	50 ~ 100 Days

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Heat Exchanger Coal Boiler Superheater And Reheater For Generating Furnace

Heat Exchanger Coal Boiler Superheater And Reheater For Generating Furnace

Description

The function of Super heater in the thermal power plant is to remove the last traces of moisture from the saturated steam coming out of boiler and to increase its temperature above saturation temperature as per requirement at inlet of steam turbine.

Details

Superheating raises overall efficiency as well as avoids too much condensation in last stages of turbine which avoids blade erosion.
The heat of combustion gases from furnace is utilised for removal of moisture from steam and to superheat the steam.
Super-heaters ususlly have several tube circuits in parallel with one or more return bends,connected between headers.
Heat from the hot gases to the vapour in the surperheater is transferred at high temperatures.
Therefore promary section of superheater is arranged in counterflow and secondary section in parallel flow to reduce the temp.stressing of the tube wall.

Principle

Principle of superheater is similar to steam generating tubes of boiler.
The hot gases at high temperature sweep over superheater tubes and raise the temperature of steam which magnitude depends upon exit gas temperature leaving the superheater and gas velocity.
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, presure, required temperature etc. We will design accordingly.

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.

Function

Superheater is to increase the temperature of the steam above its saturation point.
Reheater is basically a superheater that superheats steam exiting the high-pressure stage of a turbine. The reheated steam is then sent to the low-pressure stage of the turbine. By reheating steam between high-pressure and low-pressure turbine it is possible to increase the electrical efficiency of the power plant cycle beyond 40%.The reheat cycle is used in large power boilers since it is feasible economically only in larger power plants.

Advantages & Disadvantages

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.

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.

Heat Exchanger Coal Boiler Superheater And Reheater For Generating Furnace

Advance technology

1	HDB has extensive experience using their remaining useful life analysis system to predict the lifespan of tubes.
2	The system measures the oxide and wall thickness of the tube during an on-site non-destructive test and this is used to calculate the remaining useful life.
3	HDB developed the oxide measuring technology in 1991 and it is now used as the standard throughout the world.

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.

Product Function

1.The function of the superheater in the thermal power plant is to remove the last traces of moisture ( 1 to 2%) from the saturated steam coming out of boiler and to increase its temperature sufficiently above saturation temperature.

2.The super-heating heating raises overall overall cycle efficiency efficiency as well as avoids too much condensation in the last stages of the turbine which avoids the blade erosion.

3.The heat of combustion gases from furnace is utilized for the removal of moisture from steam and to superheat the steam.

4.Super-heaters usually have several tube circuits in parallel with one or more return bends, connected between headers.

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Heat Exchanger Coal Boiler Superheater And Reheater For Generating Furnace

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