CRU - Moving-Bed

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