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Compressors Operation

PROP/COMPOPGB
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Who should attend?

  • This course provides a better understanding of the technology, performance and operation of centrifugal and volumetric compressors.
Audience :
  • Operation and technical department staff involved in the operation of centrifugal and volumetric compressors.
  • Employees in charge of running and checking compression systems.

Level : Proficiency

Course Content

  • COMPRESSION PREREQUISITES

      • Compression fundamentals: isentropic and polytropic compression.
      • Pressure, flowrate, specific gravity, friction losses, centrifugal force, mechanic and aerodynamic power, energy conservation.
      • Compressor choice and typical upstream implementations.

  • TECHNOLOGY & PERFORMANCE

      • Centrifugal compressors:
      • Different types of centrifugal compressors.
      • Component parts and architecture of a centrifugal compressor.
      • Technology of the essential components: stator, rotor, bearings, thrust bearing, seals.
      • Vibrations, critical speed, dynamic balancing.
      • Auxiliary equipment: lubrication system, buffer gas, balancing line…
      • Safety parameters: axial displacement, vibrations, bearing and thrust bearing temperatures, oil pressure…
      • Changes in gas velocity and pressure in a centrifugal compressor.
      • Mass and volume flow rate as a function of pressure, temperature and the nature of the gas.
      • Discharge temperature, power absorbed as a function of the nature of the gas and the operating conditions.
      • Compressor performance: influence of process parameters, impeller velocity and geometry.
      • Characteristic curves of the circuit and the compressor. Influence of the operating conditions: intake pressure and temperature, nature of the gas, rotation speed, IGV position.
      • Reciprocating compressors:
      • Different types of reciprocating compressors.
      • Component parts and architecture of a reciprocating compressor.
      • Technology of the essential components: cylinder, piston, valves, sealing systems, crankshaft, connecting rod…
      • Auxiliary equipment: lubrication of motion parts and cylinders, cooling interstage and cooling devices systems, connections to the flare.
      • Safety devices: sealing systems, connections to the flare circuit.
      • Compression rate and volume flow rate; influence of the operating conditions: intake pressure and temperature, nature of the gas, rotation speed.
      • Discharge temperature, power absorbed as a function of the nature of the gas and the operating conditions.
      • Characteristic curves of the compressor.
      • Rotary compressors:
      • Different types: screw, liquid ring, lobes, sliding vanes…
      • Component parts and architecture of a rotary compressor.
      • Auxiliary equipment: lubrication system.
      • Typical using.

  • OPERATION

      • Centrifugal compressors:
      • P&ID and logic security matrix analysis.
      • Flow rate regulation. Adaptation to service conditions.
      • Surge and antisurge devices. Conventional control.
      • Start-up, shutdown and isolation: hazards related to these phases.
      • Survey and monitoring the compressor and auxiliary equipment under normal operating conditions.
      • Reciprocating compressors:
      • Flow adjustment.
      • Conventional control: start-up, shutdown and isolation.
      • Monitoring the compressor and auxiliary equipment under normal operating conditions.
      • Series and parallel functioning.

  • TROUBLESHOOTING

      • Frequent problems: surge, slugging, lack of lubrication, vibrations…

  • SAFETY IN OPERATION

      • Industrials incidents and accidents analysis.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • describe the technology of centrifugal and volumetric compressors,
  • select the adequate operating conditions,
  • explain the main operating problems,
  • be involved in a troubleshooting process.

Ways & Means

  • Functional approach for a better understanding.
  • Numerous examples and cases studies from the Oil & Gas production industry and analysis of manufacturer file.