×
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

Flare Header

Flare Header

Flare Header

(OP)
I am trying to estimate vacuum generated in flare due to thermal contraction in flare header due to temperature drop during global scenarios.

How should I estimate rate of condensation?

Thanks

RE: Flare Header

Two thoughts
1.) Use the ideal gas law based on volume of Flare header
2.) Any liquid seal at the Flare drum will operate in reverse to break vacuum (although this may inject air into the flare header.
This is the reason most Flare systems have positive gas injection (fuel gas) into the header.

RE: Flare Header

Estimate the rate of condensation by taking Yitbos suggestion and calculating the volume at the beginning temperature, and then again at the lowest expected temperature.  Then simply plot the two temps and pressures and estimate a time for the temperature to decrease.  That will give you a rate of pressure decrease that you can use to size your gas injection rate (which is what I'm assuming you are doing).

Onwards,

Matt

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