edta
Chemical
- Dec 16, 2014
- 8
We have a booster compression package for offshore platform. The natural gas to be compressed with the process data as below:
+ Flow rate : 9 - 25 mmscfd (1065 - 1900 acfm)
+ MW: 21.8 - 22.2
+ Suction pressure: 550 kPag (min flow) - 850 kPag (max flow)
+ Discharge pressure: 1700 kPag (min flow) - 2300 kPag (max flow)
+ Compression ratio: 2.52 - 2.77
From the preliminary screening, reciprocating and rotary screw (oil free and oil flooded) compressors seem adequate for above application. IMHO,the reciprocating is not preferred due to below reasons:
+ Large space
+ High vibration problem
+ Bulky and Heavy
+ Lower availability
+ much more wearing parts
The oil free screw compressor seems to have the same problems with noise and vibration. Hence, I prefer the oil flooded screw for my project due to its higher availability. But this type still have problem with expensive lube oil, which may be saturated with natural hydrocarbon gas. However, other guys in my team said that we may have the limit manufacturer and after sale supportif we go with the screw type (the platform is located in southeast Asia).
Any advice on the compressor selection for my project is greatly appreciated.
Thanks
+ Flow rate : 9 - 25 mmscfd (1065 - 1900 acfm)
+ MW: 21.8 - 22.2
+ Suction pressure: 550 kPag (min flow) - 850 kPag (max flow)
+ Discharge pressure: 1700 kPag (min flow) - 2300 kPag (max flow)
+ Compression ratio: 2.52 - 2.77
From the preliminary screening, reciprocating and rotary screw (oil free and oil flooded) compressors seem adequate for above application. IMHO,the reciprocating is not preferred due to below reasons:
+ Large space
+ High vibration problem
+ Bulky and Heavy
+ Lower availability
+ much more wearing parts
The oil free screw compressor seems to have the same problems with noise and vibration. Hence, I prefer the oil flooded screw for my project due to its higher availability. But this type still have problem with expensive lube oil, which may be saturated with natural hydrocarbon gas. However, other guys in my team said that we may have the limit manufacturer and after sale supportif we go with the screw type (the platform is located in southeast Asia).
Any advice on the compressor selection for my project is greatly appreciated.
Thanks