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CRU - Moving-Bed

Envision Systems CRU: Reformer Moving-Bed Simulation

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CRU: Reformer Moving-Bed Simulation

The CRU simulation is a rigorous and high-fidelity mathematical process model that provides a realistic dynamic response for a moving-bed catalytic reforming unit.

Process Overview:

The catalytic reforming unit dehydrogenates paraffins and naphthenes in the naphtha feed stream to aromatics. The resulting product is a high octane, high aromatics stream that can be used as a gasoline blending component or can be further processed for aromatics recovery. By-product streams include a hydrogen-rich make-gas and an LPG stream.



Major Sections:

  • Feed and Reactor Section
  • Furnace and Waste Heat Recovery Section
  • Product Separator and Recycle Gas Compressor Section
  • Recontact Section
  • Stabilizer Section
  • Continuous Catalyst Regeneration section


Major Operations for Trainee Practice:

  • Startup and Shutdown Operations
  • Normal Operations
  • Emergency Shutdown Operations
  • Troubleshooting Equipment, Instrument and Control Valve Malfunctions
  • Malfunction Recovery Actions


Simulation Features:

  • Effect on Reforming Products
    • Reactor Inlet Temperatures
    • Reactor Pressure
    • Naphtha Feed Rate and Feedstock Quality
    • Recycle Gas H2 to Oil Ratio
    • Catalyst Coking or Bed Ageing
    • Chloride and Alcohol Injection
    • Sulfur Inhibition of Catalyst Activity
    • Water in Feed
  • Effect on Coking
    • Reactor Inlet Temperatures
    • Reactor Pressure
    • Recycle Gas H2 to Oil Ratio
  • Waste Heat Steam Production
  • Booster Compressor, Recontacting Section and Hydrogen Production
  • Interlock/Safeguard System
  • Product Properties Calculation such as:
    • Reformate Reid Vapor Pressure and Octane Number
    • LPG C5+ and Benzene Volume %
    • Hydrogen Make-Gas Composition
    • Light Hydrocarbon Offgas Composition
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