×
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

Buffer Gas Spec.

Buffer Gas Spec.

Buffer Gas Spec.

(OP)
Dear Eng-Tip'ers,

I have a plan to change the buffer gas media for centrifugal compressor from pure H2 with 99.9% purity to H2 rich gas with purity between 92 % - 97 % but I dont have any clue whether the shifting will be OK or not. Does anyone has information on the specification or requirement for centrifugal compressor's buffer gas?

Thanks for your help.

RE: Buffer Gas Spec.

Imans, what is the type of seal you are using. I mean is it double tandem or single seal? What do you use as your seal gas and separation gas?
Because when you say buffer gas, it means you have different supplies for seal gas supply and separation gas supply in addition to the buffer gas supply.

RE: Buffer Gas Spec.

Run the gas composition past your vendor.  They will be very happy analyze it and tell you if they recommend a different filter method, a heater to eliminate the possibility of liquids, or even a knock out pot.  The three big compressor gas seal mfgs I can think of can also send an engineer or technician out to help you work with your panel to adjust.  They have every interest in helping you prolong the life of the seal, thier reputation rests firmly in that.  

RE: Buffer Gas Spec.

With gas seals, priority #1 is to ensure the buffer gas is absolutely clean. With double gas seals, we inject N2 between the seals. Yes...THAT clean.

If you are using gas seals, then I would try to dissuade you from switching to a less pure buffer gas.

If your talking about buffer gas injection "inboard" of the seals, then a low quality gas may do.

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