Page 254 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Be st Practice 3 .28 Compressor Best Practices

Best
Best
Best Practice 3.28Practice 3.28Practice 3.28
Re-rates e consider the drive system (transmission and power limitations and in some cases, hydraulic coupling
driver power limitations) and suction drum limitations to slippage requiring rotor and coupling replacement.
optimize reliability and production rates. Failure to check suction drum for re-rate maximum flow conditions
Confirm sufficient driver, coupling, gear (if applicable) power/torque has resulted in:
capability. Fouling
Confirm that the suction drum entrainment velocity limit is not Liquid entrainment damage
exceeded. Suction drum demister deterioration
Exceeding the entrainment velocity limit can result in compressor Liquid carryover into the compressor
fouling and/or suction drum demister deterioration and damage.
Lessons Learned Benchmarks
This best practice has been used in all re-rate projects performed by
Failure to consider sufficient drive system capability has
FAI since the mid-1980s to ensure trouble free re-rate start-ups, and
resulted in less than desired re-rate capacity, based on
compressor reliabilities exceeding 99.7%.

228