Deaeration is the mechanical removal of oxygen and carbon dioxide from the boiler feedwater. The correct design of a dearetor, properly operated and maintained, will remove all CO2, and control oxygen levels down to .005 cc/liter (7 ppb). This mechanical operation combined with the addition of chemical scavengers will eliminate O2 in the boiler feedwater. Mechanical deaeration consists mainly of spraying the water into many fine particles and scrubbing out the released oxygen with clean steam. This is usually done in a two-stage process.

As the supplier of the Deaerator Tanks, TEFCO offers its clients with the layout and design of Dearator Tanks, ranging from fabrication to installation, utilizing a strong basis of design.
The mechanical deaeration process is one of the most economical methods for removing corrosive gases such as dissolved oxygen from boiler feed water. Both atmospheric deaerators and pressurized deaerators are available with either spray style or tray style designs. Our units may be two-tank design with surge tank or a two-compartment tanks. The construction of our Tanks conform to section VIII of the ASME code. Our Tank material of construction may be of black steel or stainless steel; our tanks can be lined with plasite. A typical package includes the deaerator tank mounted on a stand of an appropriate height along with all operating controls, feed pumps assembled and piped.

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