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| What is aDeaerator? |
Deaerator is a device that is widely used to remove air and other dissolved gases from boiler feed water to generate steam. In particular, dissolved oxygen in boiler feedwaters will cause serious corrosion damage in steam system by attaching to the wall metal pipe and other metal equipment and forming oxides (rust). Water also combines with carbon dioxide dissolves to form carbonic acid that causes further corrosion. Deaerators Most are designed to remove oxygen to a severe level of 7 ppb (0.005 cm ³ / L) or less.
There are two basic types of deaerators, tray-type and spray-type.
- Tray type (also called a cascade-type) including vertical domed deaeration section mounted on a horizontal cylindrical vessel which serves as a storage tank deaerated boiler feed water.
- Spray-type consists only of a ship (or vertical) horizontal cylinder which serves both as the boiler feed water deaeration and storage tanks.
Deaerator consists of two small drums where the drum is prelimenery heating and exhaust gases from the feedwater, while the larger drum is a shelter to feed water that falls from a smaller drum on it. In the spray nozzle containing a smaller drum that serves to spray water feed into fine droplets of water so that the process of heating and exhaust gases from the feedwater can be done perfectly.
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