6 replies to this topic

[mm217]

Dear All,

I wanted to know what are the advantages of hairpin configuration of compressor trains in one compressor station.
In our project, the inlet header divided to four scrubber and discharge of scrubbers join together to one header again! then the header divided to four branches, each branches goes to compressor and air cooler and discharge of air coolers join together to outlet main header.

surprisingly! the anti-surge line is derived from compressor discharge (not air cooler) and joins to compressor suction (not scrubber suction)! I justed wanted to know if it is common for HAIR PIN configuration of compressor trains?!
I thought the anti-surge line should be derived after cooler and should join to scrubber suction. I appreciate if anyone could help me to understand better the situation.

[ankur2061]

mm217,

Have a look at the following link which talks about the compressor configuration in a natural gas compressor station:

http://www.cheresour...0759#entry40759

Hope this helps.

Regards,
Ankur.

[mm217]

mm217,

Have a look at the following link which talks about the compressor configuration in a natural gas compressor station:

http://www.cheresour...0759#entry40759

Hope this helps.

Regards,
Ankur.

Ankur,

I read the link and it was so useful. But i still have questions about the anti-surge line. I want to know if it is correct to derive it after compressor or it MUST be derived after aircooler. I should have enough proof to show to client.

Thanks a lot.

[ankur2061]

mm217,

The recycle line for surge control should be taken after the air cooler since the recyle gas to the suction of the compressor throught the recycle line should be cooled to the suction temperature.

In case it is impractical due to layout and piping constraints to provide the recylce line for surge control to be routed from the air cooler outlet then a dedicated cooler should be provided in the recycle line to cool the recycle gas to the suction temperature.

If you are interested in a write-up on anti-surge systems send me an e-mail at my mail ID and I will send you some material.

Regards,
Ankur.

[mm217]

mm217,

The recycle line for surge control should be taken after the air cooler since the recyle gas to the suction of the compressor throught the recycle line should be cooled to the suction temperature.

In case it is impractical due to layout and piping constraints to provide the recylce line for surge control to be routed from the air cooler outlet then a dedicated cooler should be provided in the recycle line to cool the recycle gas to the suction temperature.

If you are interested in a write-up on anti-surge systems send me an e-mail at my mail ID and I will send you some material.

Regards,
Ankur.

Dear Ankur;

It's your kindness to help me. I will send you e-mail soon.

Regards

[sheiko]

Dear Ankur,
It could be a good idea to share this material or compile it in a blog entry, if possible...

[mm217]

mm217,

The recycle line for surge control should be taken after the air cooler since the recyle gas to the suction of the compressor throught the recycle line should be cooled to the suction temperature.

In case it is impractical due to layout and piping constraints to provide the recylce line for surge control to be routed from the air cooler outlet then a dedicated cooler should be provided in the recycle line to cool the recycle gas to the suction temperature.

If you are interested in a write-up on anti-surge systems send me an e-mail at my mail ID and I will send you some material.

Regards,
Ankur.

Dear Ankur;

It's your kindness to help me. I will send you e-mail soon.

Regards

Ankur;

It was so kind of you to let me ask my questions by e-mail. I solve the anti-surge line problem some how, but i still have elementary question and miss understanding the meaning of "Hairpin" configuration.
would you please explain it to me what is the difference between "straight" and "hairpin" configuration in compressor station?!

Thanks a lot.

mm217