The EHY2102 Aspen HYSYS Petroleum Refining course focuses on Process Modeling and Optimization for Refinery Unit Operations. This advanced training equips engineers with the skills to simulate complex refinery flowsheets, characterize petroleum assays, and optimize reactor performance to maximize refinery margins. 1. Course Objectives and Scope
The primary goal of EHY2102 is to teach users how to leverage specialized Aspen HYSYS Petroleum Refining tools to build and troubleshoot high-fidelity refinery models. Key learning outcomes include:
Petroleum Characterization: Using the Petroleum Assay Management tools to add and manipulate assay data for accurate property tracking (e.g., sulfur content, octane numbers).
Rapid Flowsheet Construction: Efficiently building models for major refinery units such as Fluidized Catalytic Crackers (FCC), Hydrocrackers (HCR), and Catalytic Reformers.
Optimization: Using the Aspen HYSYS Optimizer to improve process efficiency and calibrate simulations against actual plant data. 2. Specialized Unit Operations
Unlike standard HYSYS simulations, EHY2102 utilizes specific refinery-related unit operations and reactor models: EHY2102 Aspen HYSYS Petroleum Refining...Unit O...
Assay Manipulator & Petroleum Feeder: Tools used to adjust assay properties and manage the introduction of complex petroleum streams into the simulation.
Refining Reactors: Specialized models for Catalytic Reforming, Delayed Coking, and Visbreaking that utilize molecular-based simulation for accurate yield prediction.
Refining Short-Cut Column: Used for preliminary modeling of Fractionation Columns before moving to rigorous distillation simulations. 3. Key Benefits for Refining Operations
Implementing the modeling techniques taught in EHY2102 provides several operational advantages:
Refinery-Wide Modeling: Enables the prediction of process stream yields and properties across multiple units. The EHY2102 Aspen HYSYS Petroleum Refining course focuses
Improved Planning: Models can be exported to planning tools like Aspen PIMS to ensure planning decisions are based on rigorous engineering data.
Decision Support: Accurate simulation allows operators to analyze Crude Flexibility and evaluate the economic impact of changing feedstocks or operating conditions. 4. Summary Table: Core Simulation Tools Aspen HYSYS: Migration to V8 - AspenTech Support Center
EHY2102 goes beyond mass balance; it introduces rate-based distillation. This is where the "Petroleum Refining" nature of the course shines.
Instead of assuming 100% tray efficiency, you model the hydraulics.
The Insight: When you run the simulation with tray rating activated, Aspen HYSYS will calculate the jet flood and downcomer backup. Most refinery bottlenecks (specifically a crude tower flooding at +15% throughput) are captured here. The EHY2102 course dedicates three hours to adjusting feed nozzle location based on these hydraulic results, often debottlenecking a unit by 20% without hardware changes. Right-click the Column *Unit O*
The CDU is every refinery’s first unit. In Unit O, you will build a column with:
Critical HYSYS skills taught:
Example scenario in EHY2102: “Given a Middle Eastern crude assay (API 32, 2.5 wt% sulfur), design a CDU to overflash 5% to prevent coke formation in the furnace.”
Once the oil is characterized (defined) in this unit, the next logical step in a refinery simulation is the Atmospheric Distillation Column (CDU).
Are you looking for help with a specific problem in this unit? If you are stuck on a specific simulation step (e.g., convergence errors, missing data in the assay, or setting up the column specifications), please provide the details, and I can guide you through the HYSYS setup.