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Dear All,
Can some body give me the reason why in Sea water FGD the absorbed water is mixed with fresh sea water to neutralise H+ ions before the aeration to oxidise HSO3 to HSO4. Is it not possible to oxidise HSO3 which is formed by absorption before the neutralisation reaction?
In order to reduce reaction chamber capacity can we pre-aerarate the water from absorber separately and then again aerate with much lesser quantity and lesser residence time in reaction chamber after mixing with water .
In otherwords is it necessary to water is to be neutralised before oxidation? or is there any certain pH requirement for effective oxidation to take place?
I will be greatful if some body can answer my querries.
Regards
khadar
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Sea Water Fgd Oxidation Of Hso3-
Started by Guest_A.khadar_*, Jun 14 2004 02:49 AM
1 reply to this topic
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siretb
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Posted 15 June 2004 - 02:39 AM
I would think that it is beacuse the oxidation of HSO3- to HSO4-/H2SO4 leds to acidification, and that if you blow air in a too acidic solution you will backstrip the scrubbed SO2 (HSO3- + H+ <--->> SO2 + H2O) . Not quite what you want!
Due to the very limited oxigen solubility, I doubt it would help much to pre aerate the waters.
Due to the very limited oxigen solubility, I doubt it would help much to pre aerate the waters.
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