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Crude Oil & Vacuum Distillation

Crude Oil & Vacuum Distillation

5 days
RAF/DADSV-E
Sessions
This course is not scheduled.
Who should attend?

Audience

    • Engineers, senior operation personnel and technical supervisors interested or involved in the operation, optimization and monitoring of crude oil atmospheric distillation and residue vacuum distillation units.

Level

  • Proficiency
  • This course provides a deeper understanding of the operating and monitoring of atmospheric and vacuum distillation units.
Learning Objectives
  • Upon completion of the course, the participants will be able to:
  • grasp fundamental process control and the impact of each controller on the process and on the characteristics of the cuts produced,
  • analyze desalter operation and corrosion monitoring,
  • detect potential deficiencies by troubleshooting.
Course Content

IMPACT OF CRUDE OIL QUALITY ON PRODUCTS

0.5 day

  • Tuning of the volatility of petroleum fractions in view of their end-use: constraints and flexibility of cut points; principal problems related to quality.
  • Crude oils: properties (TBP analysis), product yields, related margins.
  • Main schemes for crude oil fractionation.

OPERATING CONDITIONS OF AN ATMOSPHERIC & VACUUM DISTILLATION UNITS

2 days

  • Material balance: cut points, product characteristics, separation quality, fractionation capability..
  • Top condensation and pressure in the column - Partial pressures.
  • Feed vaporization: inlet temperature, overflash.
  • Product stripping: steam stripping and heat stripping.
  • Heat balance of the column - Pumparounds and heat integration.
  • Modern internals for crude oil distillation column.

DESALTING & CORROSION CONTROL

0.5 day

  • Corrosion by sulfur, naphthenic acids and mineral salts.
  • Crude oil desalting: purpose, functioning of the desalter, operating variables and troubleshooting.
  • Downstream neutralizing treatment: purpose, advantages and drawbacks.
  • Controlling corrosion at the head of topping column and anti-corrosion techniques.

SAFETY & ENVIRONMENTAL CONCERNS

0.5 day

  • Process risks: H2S, inflammability, auto-inflammation.
  • Risks related to main equipment: furnace, pumps, vacuum system.
  • Heat recovery optimization and energy consumption.
  • Efficient and low energy consumption vacuum equipment (steam ejector vs liquid ring pump).

PROCESS CONTROL, OPERATION & TROUBLESHOOTING OF MULTI-DRAW-OFF COLUMNS

1 day

  • Different control systems in atmospheric and vacuum distillation columns, using flowrate, level or temperature control.
  • Cut point control: modification of flowrate of a cut and consequences on the column.
  • Impact of the preflash on the operation of the furnace and the atmospheric column.
  • Separation control: tuning of the separation selectivity, consequences on the column and on the heat recovery system.
  • Influence of pressure and pressure control.
  • Case studies on overall control setup of these two distillation columns and disturbances.
  • Maximizing the performances of the unit under constraints or limit conditions.
  • Start-up - Shutdown - Troubleshooting.

DISTURBANCES & TROUBLESHOOTING

0.5 day

  • Stripping shutdown.
  • Failure of one pumparound pump.
  • Loss of part of the feed, etc.
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Ways & Means
  • Applications, teamwork, case studies and interactive workshops based on typical real situations.
  • Possible use of a dynamic simulator for crude oil distillation unit operation issues.