×
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

Using HYSYS for two phase blowdowns

Using HYSYS for two phase blowdowns

Using HYSYS for two phase blowdowns

(OP)
I am having a disagreement with our Safety guy.  He says HYSYS can not handle two phase blowdowns.  Any proof one way or the other?

RE: Using HYSYS for two phase blowdowns

Try it out...proof it yourself...

RE: Using HYSYS for two phase blowdowns

Far as I know, HYSYS doesn't do two-phase flow.  Use Pipephase instead.  If your flow goes sonic though you are SOL because Pipephase doesn't do M>1.  Pete

RE: Using HYSYS for two phase blowdowns

You can try Dynamic depressurising module in HYSYS and it will do calculate. Hysys can able to two phase. If you want more details send email to HYSYS support service, they will reply in day or two.

G.K.Patel

RE: Using HYSYS for two phase blowdowns

Dynamic depressurising module in HYSYS consider a vessel with VAPOR only or VAPOR-LIQUID or VAPOR-LIQUID-AQUEOUS subject to your input stream. You can either depressure VAPOR or LIQUID (flashing) subject to your choice in HYSYS. In most cases (if not all) in a plant (per my limited experiences) , depressuring is via VAPOR depressuring. As you depressure VAPOR, it discharge to disposal system like flare which is normally design to take large vapor flow but NOT large liquid ...

Quote:


He says HYSYS can not handle two phase blowdowns.

Above statement is confusing. A vessel with VAPOR & LIQUID in it but only VAPOR (and/or LIQUID) depressuring, is it correct to say "HYSYS can handle two phase blowdown" ? May be.

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