×
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

Low pressure acid gas removal using amine

Low pressure acid gas removal using amine

Low pressure acid gas removal using amine

(OP)
I have a situation where we are compressing low pressure associated/flashed/vent wet sour gas, extracting LPG, C4 & C5+ liquids and using the residue gas stream for the fuel use. The gas rich in heavy hyrocarbons need to be sweetened before NGL recovery. Amine type treatment seems suitable. Gas parameters are:

Inlet CO2: less than 1 mole%
H2S: below 500 ppmv
Pressure, psig:    90 - 100    
Temperature oF:    100 - 110    
Mol. Wt.    above 40    
Gas Flow, MMSCFD: 50     

As such CO2 removal is not necessary. Recovered acid gas from the amine unit would be incinerated. I was wondering if some of you have a similar experience (low pressure, low H2S/CO2 ratio, NGL rich). Any operating problems? What generic amine type would be the most suitable? Client based on their past experience is not very much in liking of MEA. Any suggestions? Thanks a lot for your time!

RE: Low pressure acid gas removal using amine

I suggest looking into software from BR&E titled TSweet.  It will allow you to run multiple cases with different amines for comparison's sake.  For the gas stream you've mentioned, there will probably be a number of amines that would work.  I would check into DGA, DEA and MDEA.  DGA, like MEA, requires a reclaimer.  Typically, DEA and MDEA do not.

RE: Low pressure acid gas removal using amine

Sorry, forgot a link.  http://www.bre.com

RE: Low pressure acid gas removal using amine

(OP)
Thanks Canoman (Chemical)
I agree with you TSweet is another way of looking and comparing alternatives. However, I was primarily interested in someones' real life experience with low pressure gas such as the one mentioned in my original request. I had raised this question in the Process Engineering Forum as well. There are quite a few useful suggestions in that forum. Please have a look at the following thread:

Thread798-95532

Jibran

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