Chloride Content Of Condensed Water
Chloride Content Of Condensed Water
(OP)
1.When undertaking materials selection, particularly for CRAs in H2S service, what concentration of chloride ions would you assume to be present in condensing water (i.e. water forming below the water dew point for the process only, not direct water production)?
2. Is the value empirical or estimated?
3. Does it account for chloride introduced into the system by, for example, maintenance activities?
Grateful to hear your views and experience.
2. Is the value empirical or estimated?
3. Does it account for chloride introduced into the system by, for example, maintenance activities?
Grateful to hear your views and experience.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/





RE: Chloride Content Of Condensed Water
Distilled water doesn't stay pure very long in the presences of contaminants, but it starts that way and can only acquire those contaminants that are present. If no chloride is present then you can assume zero.
The condensing water will quickly move toward acidic pH by absorbing the H2S, but I don't see a source of chlorides.
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
The harder I work, the luckier I seem
RE: Chloride Content Of Condensed Water
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: Chloride Content Of Condensed Water
Most samples I've taken have been in gas that is high in CO2 and the pH has drifted into the acidic region and the primary thing disolved in the water is iron.
Could it be that EFC17 pulled that suspiciously round number from the air and they're just trying to develop a conservative evaluation?
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
The harder I work, the luckier I seem
RE: Chloride Content Of Condensed Water
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: Chloride Content Of Condensed Water
I stand by my contention that condensed water does not have a specific propensity to contain 1000 ppm (0.1%) NaCl. If there is produced water of desert sand in the pipe then my guess is that the result would soar past 1,000 NaCl ppm very quickly.
David
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.
The harder I work, the luckier I seem