When you correctly implement the VDU as a linked unit operation to the Atmospheric Residue (AR) stream, you can predict the Conradson Carbon Residue (CCR) in the Vacuum Gas Oil (VGO). For an FCC unit, reducing CCR from 1.2wt% to 0.8wt% via better VDU operation increases catalyst life by 40%.
Define components
Mastering Digital Refining: A Guide to the Aspen HYSYS EHY2102 Training Course EHY2102 Aspen HYSYS Petroleum Refining...Unit O...
Always initialize your VDU column at atmospheric pressure with high reflux ratios, then ramp down pressure incrementally. HYSYS will crash if you start at 50 mmHg from cold.
The training focuses on the practical application of Aspen HYSYS for refinery-wide process modeling: When you correctly implement the VDU as a
No simulation is perfect on the first attempt. A significant part of the course's value lies in teaching engineers how to diagnose and fix common simulation problems and improve convergence—the process of getting a simulation to successfully solve for all its variables.
: Construct high-fidelity refinery models that include complex, rigorous reactors. HYSYS will crash if you start at 50 mmHg from cold
© EHY2102 Courseware – Petroleum Refining Simulation Unit. This article is intended for educational use in university laboratory sessions.
Learners discover how to input and manage over 50 major petroleum properties, including key quality indicators like sulfur content and octane number, and integrate them directly into a process flowsheet. One of the first critical tools introduced is the , a unit operation that allows for the creation of custom feedstocks. This unit operation blends or cuts multiple petroleum assays into a single, representative feed stream that accurately mirrors real-world crude intake. Here, the software allows the engineer to define a specific Flow Ratio for blending, a fundamental building block for any comprehensive crude unit simulation.
has long been the gold standard for upstream and midstream oil & gas simulation. However, with the specialized training course EHY2102 (often titled “Aspen HYSYS for Petroleum Refining” or a similar variant), engineers move beyond simple gas plants into the complex world of vacuum distillation, catalytic cracking, and hydrotreating.
is the industry-standard software environment for modeling, troubleshooting, and optimizing downstream refining infrastructure. At the core of this engineering discipline is EHY2102 , the specialized training curriculum designed by AspenTech to master Process Modeling and Optimization for Refinery Unit Operations . This comprehensive framework bridges the gap between raw experimental assay data and plant-wide, multi-unit optimization. It empowers chemical and process engineers to maximize product yield slates, evaluate opportunity crudes, and stabilize complex thermodynamic networks.