Crude distillation unit is typically a front end process in the refinery to separate the crude oil into the various products. The key products are Off gas, Naphtha, Kerosene, Light Gas Oil(LGO), Heavy Gas Oil(HGO), Atmospheric Residue

Crude Distillation Unit Module consists of Simulator and Tutorial.

Crude Distillation Unit(CDU) simulator

The highlights of CDU the simulated model:

• Permits practice:
  • Start up
  • Shutdown
  • Normal operations
  • Troubleshooting
• Detailed simulation of water-oil separation at desalter:
  • Effect of pressure drop across mixing valve
  • Effect of voltage
  • Effect of de-emulsifier
• Detailed tray-by-tray simulation of crude tower and pre-flasher
• Crude characteristics changes via TBP/ASTM curve
• Simulation of physical properties for products:
  • ASTM 5% & 95%
  • flash point
  • RVP
  • Pour point
  • IBP & EBP
• Plant alert and monitor:
  • Flooding in crude tower and pre-flasher
  • Safety valve triggered
  • Insufficient de-emulsifier in desalter
  • Insufficient or excess water mixed in desalter
  • Product off-spec
• Effect of pump-arounds on tower performance
• Effect of product draw rate on tower performance

Crude Distillation Unit(CDU) Tutorial

Topics:

• Overview:
  • Crude oil
  • Process overview
  • Downstream refinery Unit
• CDU process components:
  • Crude preparation
  • Desalter
  • Preheat train
  • Crude heater
  • Distillation system
• Key performance and operating variables:
  • Product specification
  • Desalter
  • Crude heater outlet temperature
  • Tower pressures & temperatures
  • Pumparound rates
  • Overflash flow
  • Product rates
  • Main tower stripping steam rate
  • Side stripper stripping steam rate
• Operating examples:
  • Change in crude characteristics
  • Increase Kerosene production rate
  • Decrease IBP of LGO