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Sessions
Dates Location Tuition Register
Apr 03 - 06, 2018 Rueil 2,150 €
Online By email
Who should attend?

Audience

    • Engineers, senior operation personnel or technical supervisory staff interested or involved in the operation of hydrotreatment units.
    • Engineers from research centers and engineering companies involved in the different aspects of the operation and process control of these units.

Level

  • Proficiency
  • This course provides a deeper understanding of the operating, monitoring and optimizing of hydrotreatment units.
Learning Objectives
  • Upon completion of the course, the participants will be able to:
  • grasp the essence of hydrotreatment processes,
  • analyze the operation and optimization of hydrotreatment units,
  • manage the hydrogen balance in relation with the hydrogen network,
  • detect potential deficiencies by troubleshooting,
  • assess how to meet main breakthroughs for ultra-low desulfurization requirements.
Course Content

OBJECTIVES OF HYDROTREATMENT PROCESSES

0.5 day

  • Impurities in petroleum cuts and products; their impact on health, environment and on other refining processes. Highly refractory compounds.
  • Recent regulations and future trends: quality specifications of petroleum products and fuels in relationship with concerns mentioned above.
  • Aim of the various treatments with hydrogen and integration in the refining scheme: hydropurifications of straight run cuts, stabilization or saturation of cracked cuts.

CHEMICAL REACTIONS & HYDROTREATMENT CATALYSTS

1 day

  • Characteristics of the chemical reactions involved: thermodynamic and kinetic aspects, consequences on the operation of units, side reactions and optimum operating conditions to deplete their evolution, specific features of reversion reactions.
  • Characteristics of the catalysts for hydropurification and for hydrogenation: effect of molybdenum, cobalt and nickel, importance of the substrate, selection criteria for a hydrotreatment specific issue. Top gradings.
  • Loading of the catalyst. Internals in the reactor.
  • Presulfiding procedures: role, steps and details of the different methods.

OPERATION OF A DISTILLATE HYDROTREATMENT UNIT

0.75 day

  • Operating conditions and compositions of the main streams; mass balance and yields, sulfur balance, hydrogen balance and consumption.
  • Significance of the operating variables and their influence on the process: mean temperatures and profile, pressures, partial pressure of hydrogen, recycle rate, quench ratio, feed flow rate and space velocity.
  • Advanced process control and optimization of the process.
  • Management of the hydrogen network in the refinery. Effect of feed composition and origin.
  • Catalyst follow up and cycle length optimization, ageing and deactivation.
  • Regeneration steps and monitoring.
  • Maximizing the performances of the unit under constraints or limit conditions.

DISTURBANCES, INCIDENTS & TROUBLESHOOTING

1 day

  • Causes of quality decrease and corresponding actions.
  • Main automatic safety systems.
  • Feed pump failure, heater failure.
  • Compressor failure: fresh gas or recycle, adapted reaction and safe shutdown.

PERFORMANCE OF THE VARIOUS HYDROTREATMENT UNITS

0.5 day

  • For each of the following processes, the operating parameters and the specific operating features are addressed.
  • Naphtha desulfurization for catalytic reformer and isomerization feed.
  • Cracked gasoline treatments, special hydrotreatments for the FCC gasoline.
  • Stabilization of the pyrolysis gasoline.
  • Hydroisomerization of the C4 cut out of the FCC to feed alkylation unit.
  • Hydrotreatment of middle distillates: kerosene and gas-oil, LCO processing.
  • Desulfurization of vacuum gasoil to FCC units.
  • Residues demetallization processes.
  • Hydrotreatments in lube oil manufacturing.
  • Hydrogen manufacturing or enrichment processes.

SPECIFIC DEVELOPMENTS TO MEET THE ULTRA-LOW DESULFURIZATION OF GASOLINE & DIESEL FUELS

0.25 day

  • High performance catalysts, grading materials, advantage of the dense loading, technology of the reactor and exchangers, operating conditions, recycle gas treatment, hydrogen purification, advanced process control.
Ways & Means
  • Applications, teamwork, case studies and interactive workshops based on typical real situations.
  • Potential use of a dynamic simulator.