Best material for alkaline & acidic services?
Best material for alkaline & acidic services?
(OP)
We have a neutralisation basin which supplies fresh caustic (20% conc.) to gas scrubber & the return line comes to basin. Now within one year the return pipeline failed 3 times at different locations near to basin & the failure was not on the joints but in pipe itself. Failure is in form of pinhole in pipeline. The process study shows the pH value for the return service is 4 (which is acidic). The whole pipeline is A53 GrB designed for 20 % NaOH @ 0 degC.
Kindly suggest any solution?
Kindly suggest any solution?





RE: Best material for alkaline & acidic services?
whoever selected steel in the first place should be paying for all of this. It had zero chance of survival.
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Plymouth Tube
RE: Best material for alkaline & acidic services?
Regards
Pat
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RE: Best material for alkaline & acidic services?
RE: Best material for alkaline & acidic services?
What bout FRP?
RE: Best material for alkaline & acidic services?
I still say HDPE or PP, depending on physical load and support.
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
http://eng-tips.com/market.cfm
for site rules
RE: Best material for alkaline & acidic services?
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Plymouth Tube