×
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

dehydrating natural gas

dehydrating natural gas

dehydrating natural gas

(OP)
Why is it essential to dehydrate gas before it is compressed and exported from the platform?

Also, what special considerations must be given to the design and operation of the gas export pipeline if the gas contains substantial amounts of carbon dioxide?

RE: dehydrating natural gas

There are several reasons for dehydrating gas before compressing and exporting it

1/ Reduce corrosion in the export lines as a result of condensation of water in the pipelines.
2/ Prevention of hydrate formation as the gas cools down in the export pipeline.
3/ Reduction in the formation of a liquid phase in the pipeline and therefore a reduction in the possibility of slugging (depends upon a lot of other factors as well i.e. flowrate, length and diameter of pipeline, total cooling etc.)
4/ Reduce the corrosion experienced by the export compressor by passing warm, wet gas into it.

As for handling significant percentages of CO2, I would expect that corrosion issues would be foremost in your mind so you would have to be very careful with your materials selection for the pipeline.  I assume that the plant you are exporting this gas to will be able to cope with a high CO2 concentration.

I hope that this is of use to you.  

For further information refer to Gas Conditioning and Processing Volume 2 by JM Campbell & Co. (currently in it's 8th Edition)

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