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Mdea Strength In Presence Of Ammonia

Started by Peter A., Oct 09 2006 09:02 PM

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#1 Peter A.

Peter A.

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Posted 09 October 2006 - 09:02 PM

MDEA is used in our refinery as an acid gas remover (CO2/H2/HCN ect..)
Recently we had an increase in ammonia in the MDEA and and decrease in MDEA strength. Adding MDEA did not increase the MDEA strength level. The Dilema is that we're not sure if the analysis is done correctly. Is ammonia interfering? The strength is determined by titration of lean MDEA with sulfuric acid. We tried to strip the ammonia by boiling the Lean MDEA but that did not increase MDEA strength significantly. The titration curve did not show any other inflection than that of the MDEA EP with H2SO4.
Any other idea how to determine MDEA strength in the presence of ammonia?
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