1 reply to this topic

[TheOilGasEngineer]

Hi,

Good Morning.I'm Rotating Equipment Engineer.

I have a centrifugal compressor, 3 stage (API 617) for CFP off gas service which is now required to be used for another service.

 

Existing Conditions:

 

Rated Flow at inlet flange : 31320 kg/h

MW: 24.10.

Suction pressure:10.03 kg/cm2a

suction temperature:40 deg C

discharge pressure : 16.5 kg/cm2a

discharge temperature : 73.8 deg C

speed : 13071 rpm

shaft power at coupling : 588 kW

Ploytrophic head : 54.71 kJ/kg

Ploytrophic efficiency : 82.4%

Motor Rating : 660 kW

 

 

New Condition :

 

Rated Flow at inlet flange : 50000 kg/h

MW: 57.2.

Suction pressure:2.373 kg/cm2a

suction temperature:17.87 deg C

discharge pressure : 7.103 kg/cm2a

discharge temperature : 56.6 deg C 

Gas power : 797 kW (as mentioned in PDS).

 

My Query is before to going to OEM what can be the preliminary adequecy check that can be done and how?

Which are the points needs to checked.Request to provide your expert advise.

 

If any other input in addition to above is required please do let me know.

 

Regards,

Choudhary

[Bobby Strain]

First, we don't know what CFP is. Nor PDS. You only need the performance curves for the compressor. If you have a process simulator you can predict performance for the new service. Obviously the driver power is significantly greater. You should also have gas compositions and properties to make any assessment. And details for each stage. If you go to the OEM, (we know what this is), you need to provide much more information. Look at a compressor datasheet for guidance. And you should find a more suitable handle given your lack of knowledge on this one subject.

 

Bobby