×
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

Acetone reacts with Carbon steel????

Acetone reacts with Carbon steel????

Acetone reacts with Carbon steel????

(OP)
Do Acetone reacts with carbon steel to for mesityloxide? When we switch our storage tanks after few days, mesityloxide content will be high and gradually reduces when diluted with recovered acetone from columns.

Have you guys experienced this poblem before? If yes is there nay kind of inert coating you applied for carbon steel tanks?

Koshy

RE: Acetone reacts with Carbon steel????

I don't believe carbon steel causes MO or DAA formation.  My experience has always been that their formation is due to reduced pH.  Maybe a dissolved oxygen issue, but that's a guess.

RE: Acetone reacts with Carbon steel????

(OP)
ash9144,

We maintain a pH aroung 6.5-7.5 using ion exchange resin and the tank is blanketed with N2 and water content in aceotne is 2500 ppm. Our distillation column also runs in vacuum so I dun see any reason for presence of dissolved oxygen. Could it be due to water in acetone?

Appreciate your comments

RE: Acetone reacts with Carbon steel????

Well, Fe3O8 is a wonderfull catalyst.

RE: Acetone reacts with Carbon steel????

What levels of MO are you seeing?  How are you keeping your acetone dry?  I guess could be iron.  You could take a sample of low MO acetone in glass bottle then test later to see if it is similar to material in tank.

RE: Acetone reacts with Carbon steel????

(OP)
Normal concnetration of MO in Acetone is 50 ppm but when you let acetone sit in the tank for  a week during shutdowns, conc increases to 300 ppm. Acetone is blanketed by nitrogen.

During normal operations, MO is less because it is well dispersed in the acetone. Since MO gravity is higher than acetone, during shutdowns, it will settle in the bottom and when we collect sample from the pump outlet, it gives high reading. This level increases our reaction time. After couple of batches, MO comes back to normal.( due to dilution)

RE: Acetone reacts with Carbon steel????


To dcasto, please give some information or a link on Fe3O8. The common black oxide is Fe3O4.

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