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Ethylene Compression & Hypercompressors for LDPE Units

Ethylene Compression & Hypercompressors for LDPE Units

4 days
MTE/ETHCO-E
Sessions
This course is not scheduled.
Who should attend?

Audience

    • Engineers and technical staff (operation, maintenance and/or engineering) interested or involved in ethylene compression.

Level

  • Advanced
  • This course provides a comprehensive understanding of ethylene compression related to compressors technology, operation and efficiency.
Learning Objectives
  • Upon completion of the course, the participants will be able to:
  • master the technology and operation of ethylene compressors,
  • understand the basic design in relation to ethylene compression operating conditions,
  • monitor and optimize the performance of compressors,
  • identify most common failure modes and corrective measures.
Course Content

ETHYLENE BEHAVIOR DURING COMPRESSION

1 day

  • Ideal gas equation and implementation; isentropic compression; mass and volume capacity. Supercritical gas behavior.
  • Practical compression laws: discharge temperature, power of compression.
  • Pressure-Enthalpy diagram for Ethylene: for primary compressors and hypercompressors.
  • Main limitations: risks of condensation, overheating, decomposition, grease deposits.
  • Case studies: ethylene compression from 1 to 3000 bar.

PRIMARY COMPRESSORS BEHAVIOR & OPERATION

1 day

  • Indicator diagram for ideal and actual cases.
  • Influence of process temperatures and pressures.
  • Dead volume: impact on the intake of the machine.
  • Capacity control: different methods.
  • Power, efficiency.
  • Behavior of multistage reciprocating compressors.
  • Typical troubleshooting.
  • Operation: start-up and shut-down difficulties.
  • Cases studies: industrial ethylene compression, troubleshooting.

HYPERCOMPRESSORS BEHAVIOR & OPERATION

1 day

  • Compression ratio limitation due to axial loads on the crankshaft.
  • Interstage pressure control, risk of rods overbendings or plunger/seals breaks.
  • Discharge temperature limitation due to decomposition and oligomer deposits.
  • Lubrication operation and survey: crankshaft, oil seal and cooling. Criticity of the oil type.
  • Machine safety - PROGNOST™ type monitoring: axial vibrations, rod drop, oil temperatures and pressures, process temperatures and pressures.
  • Typical defaults, solutions and diagnosis.
  • Cases studies: various cases of troubleshooting.

TECHNOLOGY OF PRIMARY COMPRESSORS

0.5 day

  • Main components: frame, cylinders, piston, piston rings, piston rod, crankhead, crankshaft, distance pieces, valves, rod seals.
  • Auxiliaries: pulsation dampeners, crankshaft, seals and cylinder lubrication systems, cooling systems, safety devices.
  • Capacity control technology: main components (unloaders, clearance pockets).
  • Application: various compressor parts demonstrations.

TECHNOLOGY OF HYPERCOMPRESSORS

0.5 day

  • Main differences with classical reciprocating compressors.
  • Hypercompressor description: valves, cylinders, seals.
  • Auxiliaries:
  • Construction and survey.
  • Crankshaft lubrication.
  • Rod seal lubrication.
  • Oil seal and cooling.
  • Drains.
Ways & Means
  • Study of actual cases based on industrial situations.
  • Various illustrations of actual systems.
  • Display of components of compressors.