Sour Oil Corrosion?
Sour Oil Corrosion?
(OP)
Hi,
Wanted to pick peoples minds on Sour oils corrosion potential for Carbon Steel(CS) pipe. I know H2S can mess up CS and so can sour oil (no H2S, just >0.5% Sulphur content). But sour oil is only a threat when it is at high temperatures (200-500C) right? Am I right in saying that if the oil is at 10-20C, then amount of corrosion is pretty much negligible?
Thanks!
Wanted to pick peoples minds on Sour oils corrosion potential for Carbon Steel(CS) pipe. I know H2S can mess up CS and so can sour oil (no H2S, just >0.5% Sulphur content). But sour oil is only a threat when it is at high temperatures (200-500C) right? Am I right in saying that if the oil is at 10-20C, then amount of corrosion is pretty much negligible?
Thanks!





RE: Sour Oil Corrosion?
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Sour Oil Corrosion?
But if during a shutdown you allow humid air into the system all hell can break loose.
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Plymouth Tube
RE: Sour Oil Corrosion?
RE: Sour Oil Corrosion?
RE: Sour Oil Corrosion?
To clarify, I mean sulfur in the chemical composition of the steel. Take a look at NACE MR0175/ISO15156-2 section 8 for an explanation.
RE: Sour Oil Corrosion?
One coker expansion job where I did all the OSBL piping between the new coker unit and other units were all carbon steel for the utility streams, coker feed and product streams, amine, caustic and even the sour gas from the amine regenerators over to the sulfur units.