
Explore the fundamentals of chemical process modeling with Aspen HYSYS, from problem definition and physical property environment to flow sheet, unit operations, simulation results, and case-study analysis.
Join a student-driven Aspen Plus and HYSYS forum group to access peer support, share simulations, and build a collaborative community for mastering chemical process modeling.
Model a steady-state chemical process in Aspen HYSYS to separate methane from hydrocarbon feed, distill with a partial condenser and reboiler, and simulate CO2 combustion with mass and energy balances.
Explore the landing page in Aspen HYSYS and learn the physical property environment, including components, fluid packages, oil manager, and petroleum assays for crude oil modeling.
Explore the simulation environment in Aspen HYSYS. Learn unit operation blocks, their inputs, and how to model processes such as distillation columns by connecting real-life data to the digital model.
Explore flowsheet in Aspen HYSYS simulation environment. Learn to add material and energy streams, connect unit operations, and customize the flow chart and model pilot for efficient process modeling.
Input and define data for the profit and air streams in Aspen HYSYS, including temperature, pressure, molar flow, and composition; normalize data as needed and add CO2, oxygen, and nitrogen.
Learn to add, set up, and connect unit operations in a simulation using Aspen HYSYS. Explore control variables, transfer functions, and common equipment like heat exchangers, reactors, and distillation blocks.
Model a steady-state Aspen HYSYS process to separate methane from a three-hydrocarbon feed, combust methane in a reactor, and recover liquids via a distillation column with partial condenser and reboiler.
Learn to add a chemical reactor and build reaction sets in Aspen HYSYS, balancing methane plus oxygen to CO2 and water, and use free energy to estimate equilibrium constants.
Set up a distillation column in Aspen HYSYS with 20 stages, feed at stage 10, a partial condenser, and 2.5 molar reflux; maintain gas-to-distillate ratio of 1:10 and verify connections.
Set up the pump to move the bottoms liquid and pressurize to 150, then adjust delta pressure and pressure ratio for the Aspen HYSYS simulation.
Learn to retrieve and verify stream results in Aspen HYSYS by viewing temperature, composition, flow rates, and thermodynamic properties. See how to check condenser duty and validate temperatures from streams.
Explore case studies that test how temperature, distillation column size, reflux ratio, distillate to gas ratio, reactor conditions, oxygen or air, and pressure impact liquid product specifications in Aspen HYSYS.
Explore case studies to optimize your process by adjusting feed composition, flow rate, chiller temperature, distillate-to-gas ratio, and total column stages to balance cost, purity, and environmental goals.
In case study C, adjust the distillate to gas ratio in an Aspen HYSYS model, observing effects on methane purity, product flow, and convergence toward process specifications.
Explore how changing distillation stages from 20 to 30 affects mass transfer and vapor-liquid interaction, purity, and flow rate, weighing energy and equipment costs against product quality in Aspen HYSYS.
Learn to model chemical processes in Aspen HYSYS, covering unit operations such as reaction, separators, distillation, and heat exchange, and to set up physical properties and streams for analysis.
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Welcome to the course!
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1.Introduction to Aspen HYSYS
2.Our Chemical Process!
3.Requirements for Simulation Setup (Property Environment)
4.The Flowsheet
5.Setting up the Simulation Environment, Streams and Unit Operation
6.Results and Analysis
7.Conclusion
8.Bonus Section!
Simulation help engineers to model processes faster, easier and without losing considerable amount of resources such as money and time.
It helps to cover different scenarios in order to optimise existing processes or to design new ones.
It helps process engineer to understand current operation conditions as well.
Join the unofficial Aspen Plus & HYSYS forum for free to access peer support from 500+ students. Learn from fellow users and get help on Aspen Plus and HYSYS.
This will be our process! Please ensure to get to know it. The better you know your process (overall) the easier it becomes to simulate it.
Try to remember all unit operations, streams and important flow rates, given data and variables.
Good luck!
How to start a new simulation, new case, save case, templates and so on...
Selecting and filling up the component list. All reactants, products, intermediates must be present.
Selection of a good Fluid Package. Avoid components which are not well modeled with the selected fluid package. Method Assistant is very useful here!
If there is any reactor, a set of chemical reaction will be required. Remember that a "Set" of reactions requires at least 1 "Reaction". Ensure to use -1 for reactants and +1 for products.
What is a flowsheet, and how to use it.
Why do we need a flowhseet?
Manipulation of the Flowsheet:
The model palette and how to use it. Which unit operations are present.
Modeling a Chiller, with an inlet/outlet of material stream. A heat/energy stream is required to set up this unit operation.
Choose the "Separator" in order to simply make a flash separation. Liquid and Vapor separate due to the equilibrium condition.
The heater is modeled similar to the chiller, there is an inlet and outlet of material. We must add an Energy Stream in order to set the Heat Duty
Setting up a Reactor. It is based on the activity/gibbs free energy/equilibrium constant.
A turbine can be modeled with an expander. It takes out energy via transformation of internal energy to mechanical energy
The valve is used to decrease pressure or decrease flow rate.
How to set up the distillation column in 5 simple steps
The pump is used to move liquids or increase pressure in liquids
Creating and opening the Workbook. It will present all relevant data on unit operations, streams and compositions.
How to export the results, specially those of the workbook to excel (spreadsheet)
A small analysis on the simulation results. Verifying the final process. Some final recommendations
You need the simulation? Or maybe the workbook? Or also the excel spreadsheet? Get this downloaded here!
Final conclusions on the course, warping-up the course!
This is simple course on Plant Simulation via Aspen HYSYS will show you how to:
This is helpful for students, teachers, engineers and researchers in the area of R&D and Plant Design/Operation.
The course is didactic, with the minimum theory required to work on the Simulation Case (hands-on-workshop)!