×
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

Steam using in a condensate distillation.

Steam using in a condensate distillation.

Steam using in a condensate distillation.

(OP)
Dear colleagues,

I have a question about steam using in a condensate distillation column.

In this column, they designed a steam stream to the bottom of this column when the feed using for this column is very light. So, why do they design a steam stream go to the bottom of the condensate distillation column?

Otherwise, 2 strippers used steam stream for stripping light components. The result is water mixed to the diesel product. So, is it suitable for this design?

I hope that some of you can help me to explain these questions. Many thanks for your support.

Regards,

famnghia

RE: Steam using in a condensate distillation.

I think the objective here is to avoid light components entering the downstream system, either a tower or a tank, or maybe a reactor, I don'nt know.
Using direct steam contact is one way of bringing heat into the system, without the risk of cracking the material. I think if you don't use steam, and simply try to get rid of the light material all in a conventional reboiler, that you might get some cracking reaction going on in the reboiler. So I suspect that's why they use steam.

For your other quesiton, namely formation of water, I guess that shouldn't be a problem. water can be easily seprated in the overhead and sent to Waste Water Treatment unit or Souer water treament unit.  

RE: Steam using in a condensate distillation.

Could be just for start-up purposes.

RE: Steam using in a condensate distillation.


When the dryness of the product diesel is a basic criterion, a bottom reboiled stabilizer to free it from light ends is used.

RE: Steam using in a condensate distillation.

Maybe the vacuum in the column is not enough and some steam condenses in the diesel product.

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