ForumRe: Reasons behind oxygen injection in feedwater circuit for supercritical boiler?
From: Murphy [21]
Date: Friday, July 30, 2010
Time: 8:49:50 AM
Remote Name: 170.215.203.2
Comments
The world is not black and white in power plants that use supercritical boilers or units. Since these supercritical units operate at very-high pressures of 3,500-psi and higher, boiler tube corrosion and deposit issues are at an extreme importance.The injection of oxygen, which is known as oxygenated treatment or OT works if the in feedwater with a pH ranging 8.0 to 8.5 is very-pure . In distilled terms, the injection of oxygen in the feedwater system regulates the formation of an oxide layer on the supercritical units tubes consequentially, reducing a deposit of oxide-forming exfoliation therefore reducing the likelihood of a tube failures.
Can anyone else put a better spin on this?
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