×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Phosphoric acid storage tank

Phosphoric acid storage tank

Phosphoric acid storage tank

(OP)
Is SAF2205 suitable as a material for storing phosphoric acid (54% P2O5)?

RE: Phosphoric acid storage tank

Yes, 2205 is suitable up to 100C. Even 316 can handle it.

RE: Phosphoric acid storage tank

I'm a little leary to post this, as most posts seem to be dominated by metal oriented people.

But have you considered epoxy vinyl ester/fiberglass?  Most are good to 100C.  If you want hotter than that, dual laminates are the method of construction of choice.  Either a polyolefin or flouropolymer can be mechanically bonded to a fiberglass structure.  Lastly, this type of construction can be stamped according to ASME Section X or RTP-1.

Fiberglass should be competitive in price to 316SS.  I'm not familiar with the other alloy you mentioned.  Dual laminates vary in price greatly depending on the type of flouropolymer used.  A 12,000 gallon FEP-Teflon lined vessel is generally 20% lower in cost than Titanium Grade 7.  This of course depends on size and the wildly fluctuating price of Titanium.

This is probably more than you ever wanted to know, but please let me know if you want more information.

RE: Phosphoric acid storage tank

Ghopkins
  We metals types welcome the knowledge of you guys who know the non-metallic materials better than we do. I think we're all here to help each other and none of us should be parochial. As anyone who has tried to compare the relative merits of different materials and been frustrated by the lack of comparable data knows, it's not easy to really know all the real options.
 There is an incredible amount of money wasted on more expensive materials than are needed for the job, as well as money wasted on materials that don't last. ( Anyone out there ever looked at the crummy highways and bridges in Pennsylvania?)
 Let's continue to give the best help we can to out colleagues.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources