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Subject: Vacuum steam ejectors condensers corrosion

Date: 06/23/03 at 7:25 AM
Posted by: Luis Marques
E-mail: luis.marques@galpenergia.com
Message Posted:

We have experienced cyclic tube corrosion on shell side of vacuum overhead unit steam ejectors condensers. Corrosion is due to under deposit fouling caused by condensation of H2S, HCL, Ammonia and vacuum overhead vapours. Fluid tube side of condensers is cooling water. Condensers tube material is A179. Which is forum experience about this type of corrosion? In our older vacuum unit, tube material of steam ejectors condensers is admiralty and here we havenít had corrosion. We need to up grade condensers tube material of the youngest vacuum unit. Do you think admiralty is an option? Or ammonia compounds, even in traces, will impeach the use of copper alloys?
Thank you
Luis Marques

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