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Makeup Gas Compressors


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#1 chetanhm2

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Posted 30 December 2017 - 03:11 PM

I have two queries w r t reciprocating compressor used in Butamer Butane Isomerisation process as Makeup Gas Compressor and second w r t fired heater 

 

1) Makeup gas compressor is shown as 3 cyclinders on P & ID with each cylinder having separate pulsation dampener vessel and discharge PSVs. Also Gas from suction drum for first compressor goes to two lines/ One line is going to first cyliner of first stage and then secondly it is going to another cylinder B of firsr stage and then both outlets from A and B join together and go to discharge drum of first stage. Same thing is applied for three stages.  I do not underrstand this . Request your help whether it is multi compressor train in parallel configuration or what ?

 

2) Second query is w r t Butane isomerisation process: I wan to know whether butane reacts with hydrogen in isomerisation reactor . If yes , in which reaction ? On P & ID hydrogen line is shown as Blankating gas or sulphur stripping gas . Please help me with the role of hydrogen in this process.



#2 Bobby Strain

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Posted 30 December 2017 - 04:01 PM

A picture would help.

 

Bobby



#3 chetanhm2

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Posted 31 December 2017 - 10:12 AM

Dear Bobby Sir,
I hv vendor P and ID which i hv restriction to share.. Can u please help me with reciprocating compressors multi stage compressor configuration generally used in Industry.

#4 Art Montemayor

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Posted 31 December 2017 - 02:14 PM

chetanhm2:

 

If you are asking for free help, the least you could do is generate your own detailed flow diagram or P&ID in order to help our members help you.

 

Some work input is required on your part.  This is expected of all engineers who want to resolve a problem.



#5 chetanhm2

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Posted 01 January 2018 - 01:02 AM

Respected Art/ Bobby,

I will try to draw a sketch and send it to u now.. Can u please help me with my second query w r t Butamer Isomerisation ?

Really thanks for your time.

Regds,
Chetan Chavan

#6 Bobby Strain

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Posted 01 January 2018 - 10:14 AM

You can probably get a good answer by searching the internet. Hydrogen is probably active through an intermediate reaction in converting nbutane to isobutane.

 

Bobby






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