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A deaerator is a device that is widely used for the removal of air and other dissolved gases from the feedwater to steam generating boilers. In particular, dissolved oxygen in boiler feedwaters will cause serious corrosion damage in steam systems by attaching to the walls of metal piping and other metallic equipment and forming oxides (rust). It also combines with any dissolved carbon dioxide to form carbonic acid that causes further corrosion. Most deaerators are designed to remove oxygen down to levels of 7 ppb by weight (0.0005 cm³/L) or less.[1][2] There are two basic types of deaerators, the tray-type and the spray-type:[1][3][4][5][6] * The tray-type (also called the cascade-type) includes a vertical domed deaeration section mounted on top of a horizontal cylindrical vessel which serves as the deaerated boiler feedwater storage tank. * The spray-type consists only of a horizontal (or vertical) cylindrical vessel which serves as both the deaeration section and the boiler feedwater storage tank.
What else can I help you with?
What are the venting requirements of a deaerator tank?
Based on practical experience, deaerator manufacturers will aim to vent 22,4 kg / h of steam/air mixture per 1.000 kg / h of deaerator capacity.
Why doesn't the water in the deaerator tank turns to steam?
The water in the deaerator tank doesn't turn into steam because the water is kept at a high pressure, preventing it from boiling. The purpose of the deaerator is to remove dissolved gases from the feedwater, not to produce steam.
What is a function of deaerator?
deaerator is a device used to remove dissolved oxygen and carbondi oxide in boiler feed water. it causes scaling inside the boiler tubes and economizer also.
Why deaerator is located above in powerplant?
to develop NPSH in BFP
What is derator in thermal power plant?
to remove the oxygen and carbon di oxide in boiler feed water we are the various deaerator mechanical deaerator spry typr vaccum type likr thwt
Why the Deaerator is placed at height and mostly at 15.5mtr?
By putting deaerator at height, vapour doesn't form at the suction area of feed water pumps so cavitation phenomenon in the impeller can be prevented. also to get NPSH.
What is the deaerator device used for?
A deaerator device is a mechanism found on steam boilers. Its purpose is to remove oxygen and other gases from the water that is entering the boiler tank, since the presence of oxygen or gases can cause corrosion on the inside of the boiler.
What is the name of the device in a power plant cycle that is used to remove oxygen from feedwater that is sent to the boiler?
deaerator
What are deaerators?
Deaerator is Device or vessel where dissolved gases removed from the water by using steam (pressure corresponding to saturation temperature)
Why deaerator is placed at a higher level than turbine?
Your question is very Bad should you know the dearator in water cycle and turbine in steam cycle
What are advantages of deaerator?
A deaerator removes dissolved gases, primarily oxygen and carbon dioxide, from water, which helps prevent corrosion in boiler systems and piping. This process enhances the efficiency of steam generation by reducing the risk of scaling and fouling, leading to lower maintenance costs and increased operational reliability. Additionally, deaerators contribute to improved water quality, promoting better overall performance of thermal systems.
What is the function of a dearator on a steam boiler?
Deaerator removes dissolved oxygen from boiler water. The condensate cascades down a number of perforated trays and its surface area is greately increased. This enables dissolved oxygen to come out. Further bleed steam is supplied to deaerator and due to this the atmosphere is predominantly of steam. So the partial pressure of oxygen above the water level is very very low. When a gas exists above a liquid level, the solubility gas in the liquid depend upon its partial pressure. So oxygen comes out of water. Deaerator outlet water has less than 0.05 ppm dissolved oxygen. This is furthe removed by dizing of Hydrazene (N2H2). =A.D.PALAMWAR
