CDU/VDU
CDU Tutorial
CDU/VDU Simulation
CDU Tutorial
The interactive CDU/VDU tutorial provides an overview, fundamental
principles, control principles and operating principles for an
atmospheric crude distillation unit, using voice, video, animation and
graphics.
The principles taught here are also applicable to a vacuum distillation unit.
The topics covered are:
Overview
CDU Process Components
|
Key Performance and Operating Variables
|
Operating Examples
|
CDU/VDU Simulation
The CDU/VDU simulation is a rigorous and high-fidelity mathematical process model that provides a realistic dynamic response for an atmospheric and vacuum fractionation unit.
Process Overview:
The atmospheric and vacuum fractionation unit separates crude into following product fractions: off gas, naphtha, kerosene, light gas oil (LGO), heavy gas oil (HGO), light vacuum gas oil (LVGO), heavy vacuum gas oil (HVGO), and vacuum residue.
Major Sections:
- Desalter and Preheat Train
- Preflash Drum
- Atmospheric Furnace
- Atmospheric Tower and Side Strippers
- Vacuum Furnace
- Vacuum Tower with Vacuum System
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:
- Detailed Tray-by-Tray Simulation of Crude Tower and Pre-Flasher
- Detailed Simulation of Water-Oil Separation at Desalter
- Effect of Pressure Drop across Mixing Valve
- Effect of Voltage
-
Crude Characteristic Changes Tracked by TBP/ASTM Curve
- TBP/ASTM Analysis of Product Fractions
- Simulation of Physical Properties for Products
- Flash Point
- RVP
- Pour Point
- IBP, EBP
- Interlock/Safeguard System
- Equipment Details
- Effect of Pumparound Flows on Tower Performance
- Effect of Product Draw Rates on Tower Performance
- Dynamic Tray Animation with Detailed Information
