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Catalytic Reforming for Refining & Petrochemicals

Catalytic Reforming for Refining & Petrochemicals

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

Audience

    • Engineers, senior operations personnel or technical supervisory staff interested or involved in the operation, optimization and monitoring of hydrogen and aromatics production units.
    • Engineers from research centers and engineering companies involved in the different aspects of the operation and process control of these processes.

Level

  • Proficiency
  • This course provides a thorough technical understanding of semi-regenerative and continuous regenerative catalytic reforming processes, for refining and petrochemistry.
Learning Objectives
  • Upon completion of the course, the participants will be able to:
  • assess the influence of operating parameters on a unit performance,
  • optimize the process to achieve the targeted yield in BTX, from the design to the operation,
  • distinguish between the specificities of semi-regenerative and continuously regenerative units, depending on the refining or petrochemistry environment,
  • justify the requirements and constraints for optimized performances of the different units of an aromatic plant,
  • grasp the essence of catalyst regeneration,
  • detect potential deficiencies by troubleshooting,
  • acquire the best practices for unit start-up, normal operation and shutdown.
Course Content

THE CATALYTIC REFORMER WITHIN THE REFINERY SCHEME

0.5 day

  • Quality specifications of gasolines; reformulated gasoline and future trends.
  • Octane improving processes, integration within the refining processes.
  • Needs in hydrogen. Aromatic complex overview, need for benzene, toluene and xylenes.
  • Influence of feedstocks origins and characteristics on the performances of the units: IBP, FBP, composition (N,A, etc.), physical properties, impurities content.
  • Current yields and properties of the reformate in relation with severity.

CATALYTIC REFORMING REACTIONS & CATALYSTS

1 day

  • Review of the characteristics of all the chemical reactions: thermodynamics and kinetics.
  • Influence of the operating parameters on the production of aromatics, hydrogen, octane number, and other yields. Consequences for SR and CCR units.
  • Catalyst properties: role of the acidic and metallic functions, of the support, of the different promotors and their impact on chemical reactions and yields. Water/chlorine balance and management.
  • Catalyst composition and selectivity, poisons and ageing factors.
  • Coking, catalyst activity follow up and cycle length prediction for semi-regenerative units.
  • Catalyst regeneration. Management of each step for an optimal activity recovery for SR units. Operating parameters for CCR regeneration loops.

OPERATING PARAMETERS OF A CATALYTIC REFORMER

1 day

  • Process flow diagrams and operating parameters of a catalytic reforming unit: semi-regenerative (SR) and continuously regenerative (CCR). Main control loops. Typical range of yields.
  • Material balance. Energy consumption.
  • Operating variables for a reformer (regarding hydrocarbons): WABT, WAIT, H2/HC ratio, flow rates, recycle gas and hydrogen rich gas characteristics, flash drum conditions. Different values between CCR and SR.
  • Main equipment and metallurgy: features of reactors, heat exchangers and furnace technology, corrosion issues.
  • Specific features for low pressure equipment. Moving bed technology, recontacting section, catalyst circulation: lifts, ∆P control, seal legs, nitrogen loops for regeneration, etc.
  • Analyzers and process control.

OPERATION & OPTIMIZATION FOR CATALYTIC REFORMING

1 day

  • Unit operation: monitoring the operating variables and optimization, for semi-regenerative and regenerative units. Operation case studies.
  • Adjusting to changes in feedstocks origins.
  • High severity of the CCR towards optimized yield in Aromatics. Performance follow-up.
  • Maximizing the performances of the unit under constraints or limit conditions.
  • Main steps for start-up and shutdown.

TROUBLESHOOTING FOR CATALYTIC REFORMING

0.5 day

  • RON or aromatic content decrease: causes, diagnostic and remedies.
  • Main symptoms encountered in operation: diagnosis and remedies.
  • Specific troubles of CCR units: catalyst circulation, regeneration loops, chilling system, nitrogen lift pollution.
  • CCR operation with catalyst regeneration problems.

THE REFORMER IN THE AROMATIC COMPLEX

1 day

  • Outlets and main uses of BX (Benzene, Xylenes), ethylbenzene.
  • Technical key points to manage depending on the catalytic reforming unit performances.
  • Basic scheme to upgrade benzene and paraxylene:
  • Transformation processes involved : hydrodealkylation, disproportionation, transalkylation and isomerization.
  • Aromatic and Benzene recovery: separation processes
  • Aromatic loop included in an aromatic complex scheme.
  • Operating conditions for a typical arrangement.
Ways & Means
  • Applications, teamwork, case studies and interactive workshops based on typical real situations.