100 Most asked questions by Chemical Engineers


download the ASKNORMLIEBERMAN APP http://h.fanapp.mobi/asknormlieberman1


Wednesday, October 28, 2015

Q&A - AMINE CIRCULATION

Amine Circulation

Lee:
Mr. Lieberman, which is a better amine – MEA, DEA, or MDEA – for use in a refinery?

Norm:

MEA, without good reclaimer operation, in a plant with an FCU, is going to promote H2 assisted stress corrosion cracking. MDEA is used in concentrations of 45%, and hence tends to foam. In practice, I have found using 30 – 35 wt.% DEA is optimum – but occasional reclaiming to reduce heat stable salt accumulation is still required. If you have a sulfur plant tail gas scrubber, then a selective solvent, that rejects CO2 absorption, such as MDEA may be necessary.

5 comments:

  1. Replies
    1. I assume you mean modules not molecules.Typically, two vacuum pumps in series.

      ---Norm

      Delete
  2. I assume you mean modules not molecules.Typically, two vacuum pumps in series.

    ---Norm

    ReplyDelete
  3. I visited your blog for the first time and just been your fan. I Will be back often to check up on new stuff you post!
    Buy 5 and get 15% off bords

    ReplyDelete
  4. It’s really a nice and helpful piece of info. I’m happy that you shared this helpful information with us. Please keep us up to date like this. Thanks for sharing.  I think you made some good points in this post these simple tips are really simple.

    air compressors nz

    ReplyDelete