Contact US

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.

Students Click Here

Flash gas

Flash gas

Flash gas

In LNG production, how much flash gas is produced ?
What is the size of flash gas compressor required ?
If the flash gas is not removed, how will it affect the process ?

RE: Flash gas

All your questions are depending on your actual system. Back to the drawing board!

RE: Flash gas

At the cold end of the MCHE in LNG plants where N2 content is less than max permissible, LNG is usually a little subcooled and so there is no flash gas (as with LNG produced in north Borneo). In plants where N2 content is higher than permitted ( Western Australia, some plants in the ME), the cold end exit temp is deliberately kept higher to allow a simple end flash to remove the excess N2, which will of course contain some C1 also. This flash gas is usually routed to the HP fuel gas pool. In plants where N2 content is even higher, a nitrogen rejection unit is installed ( frac column with ovhd condensor and a reboiler) to minimise C1 losses to the N2 reject stream.

Flash gas produced at LNG MCHE cold end is not the same as boiloff gas, which is vaporisation loss at the LNG storage tank.

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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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