What is the purpose of deaeration tank?
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What is the purpose of deaeration tank?
The purpose of a deaerator is to reduce dissolved gases, particularly oxygen, to a low level and improve a plant’s thermal efficiency by raising the water temperature. In addition, deaerators provide feedwater storage and proper suction conditions for boiler feedwater pumps.
What is the purpose of feed tank?
Feedwater tanks are heated storage tanks that do not have a specific deaerating section and operate at atmospheric pressure. In addition to being a feedwater reservoir, these tanks also act as condensate receivers, cold-water makeup locations and as a point for chemical injection.
What is deaeration method?
Deaeration is the process by which air is removed from a substance where the air has mixed with or dissolved in the substance. Deaeration is used for liquids, soils and foods to improve their quality and reduce contamination, and to remove oxygen from vessels that contain liquids to reduce the corrosion rate.
What is deaeration valve?
A deaerator is a device that removes oxygen and other dissolved gases from liquids and pumpable compounds.
What is a condensate tank?
Condensate tanks are part of a condensate return system, and are used to store all the condensate water returned from a steam system. They are typically located near the boiler and their size is determined by the steam load on a system.
What is open feed system?
In an open feed system, steam from various systems comes to the condenser and gets converted into water. This condenser is continuously circulated with sea water and operates under certain atmospheric pressure or slight vacuum. The condensate, under the effect of gravity goes to the hot well and feed filter tank.
What is deaeration capacity?
According to the definition as given by the Heat Exchange Institute Standards , the Deaerator is a package unit capable of removing from the water all dissolved oxygen in excess of 0.005 cc/liter ( 7 parts per billion) at all loads up to and including the rated capacity.
Which of the following chemical is used in deaeration process?
Dissolved carbon dioxide combines with water to form carbonic acid that causes further corrosion. Most deaerators are designed to remove oxygen down to levels of 7 ppb by weight (0.005 cm³/L) or less as well as essentially eliminating carbon dioxide.