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!

*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.

Jobs

separation processes

separation processes

(OP)
Greetings,

In regards to distillation and separation processes such as fractionation towers and splitters, there are some columns with two different section diameters such as Propanizer which the lower section has larger diameter than the upper one. So, what is the main reason for a such design ?

Appreciate your inputs

Regards,

RE: separation processes

Section diameter is determined purely by vapor and liquid loads in the corresponding section of the column, for given type of column internals.

Due to feed conditions (composition, temperature) and specific product quality requirements (purity of C3 on top, and amount of C4+ in bottoms), it can occur that the section above the feed tray takes significantly less vapor or liquid load than the section below the feed tray, and the result of that is a smaller section diameter above the feed tray.

Dejan IVANOVIC
Process Engineer, MSChE

RE: separation processes

To add to ET's reply, you may also see that the column dia increases immediately above the main feed tray on this depropaniser.

RE: separation processes

(OP)
Thanks gentlemen for your prompt responses.

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close