What is the main working principle of a deaerator?
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May I ask, fellow sailors, what is the main working principle of a deaerator? Does introducing steam and raising the temperature reduce the solubility of oxygen in deionized water? There should be some oxygen content in deoxygenated water; no matter how much the solubility of oxygen decreases, there is still some present! Is there a specified standard for the oxygen content in deoxygenated water? Thank you
The principle is thermal deoxidation: the deionized water undergoes mixed heat and mass transfer with heated steam flowing from below, allowing the feed water to quickly reach the saturation temperature at the operating pressure. At this point, most of the dissolved oxygen and other gases in the water are essentially removed, achieving the purpose of deoxygenation. The dissolved oxygen and other gases that precipitate from the water are continuously removed from the deaerator through the steam exhaust pipe at its top, along with the remaining steam. The normal value is generally no more than 15 ug/L. This post was last edited by doing168 on 2009-4-1 at 22:11.]
LZ is right; it’s the increase in temperature that reduces solubility. The normal value is generally 15 ug/L