Air Preheater

Description

https://www.shuangmane.com/Air-Preheater.html

Boiler Spare Parts Boiler Steam Pipe Superheater

Air preheater product 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.

Air preheater 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.

Air preheater 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/air preheater capacity upgrades to increase power generation

Send us required technical data, such as steam capacity, presure, required
temperature etc. We will design accordingly.

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