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Basics of HYSYS
Starting a New HYSYS case…………………………………………………………1
Adding Components to the simulation……………………………………………….1
Selecting a Fluid Package…………………………………………………………….1
Specifying Reactions…………………………………………………………………3
Entering the Simulation………………………………………………………………5
Re-Entering the Simulation Basis Manager………………………………………….5
Accidentally Closing the PFD…………………………………………………..........5
Placing Material and Energy Streams………………………………………………..5
Renaming Streams……………………………………………………………………6
Placing Units………………………………………………………………………….6
Accidentally Closing the Simulation Toolbar………………………………………..6
Specifying a Material Stream…………………………………………………………7
Simple Data Checks ………………………………………………………………….8
Workbook……………………………………………………………………………..8
Printing ……………………………………………………………………………….9
Initial Setup of a New HYSYS Case
Before any simulation can occur, HYSYS needs to undergo an initial setup. During an initial setup, the components that will be used and the fluids package will be selected.
Starting a New Case in HYSYS
Start HYSYS, and click on the “New Case” button to open up the “Simulation Basis Manager” which is where all of the components and their properties can be specified.
Adding Components to the Simulation
1. To add components to the simulation, click on the “Add” button in the Simulation Basis Manager.
2. Clicking on “Add” will bring up the “Component List View” which is a list of all the components available in HYSYS. Type in the name of the desired component in the Match window and click on “Add Pure” to add it to the simulation. Close the Component List View when all of the components are selected.
Note: The Full Name/Synonym option makes finding components the easiest. To enter components by HYSYS’s simulation names, or by chemical composition, select “Sim Name” or “Formula” respectively.
Selecting a Fluids Package
1. In the Simulation Basis Manager, click on the “Add” button to specify a fluids package. Doing so will bring you to a list off all the different equations of state HYSYS uses.
2. Pick the appropriate fluid package for the system you wish to distill. To select the appropriate package, double click on the text that is displayed. See the figure below for some general guidelines on picking the appropriate fluids packages.
Specifying Reactions
If the simulation is going to have any kind of reactions during it, the reactions need to be specified in the Simulation Basis Manager. For this case the combustion of Methane will be specified.
1. Click on the “Reactions” tab, and then click on “Add Reaction”
2. Doing so brings up a window where the type of reaction is specified. For this case select Conversion, and then click “Add Reaction”
3. Now the components of the reaction must be specified. Click on the arrow on one of the tabs to bring up a list of the components for this case. Select all of the components that are present for the combustion of methane.
4. Now the stoichiometric coefficients must be entered. Enter in educated guesses for the coefficients, keeping in mind that the coefficients for the reactants have to be negative, and the coefficients for the products positive. Then click balance to have HYSYS automatically balance the reaction.
5. Since this is a conversion reaction, click on the “Basis” tab to specify the conversion of this reaction. Click on the tab next to “Co” and enter in the desired conversion of the reaction. Make sure you enter the conversion in percentage form, not decimal form. In other words, enter in 95 rather then .95. After entering in the conversion the reaction becomes ready after this step. Close the Rxn-1 window, and return to the Simulation Basis Manager.
6. Since the reaction has been correctly setup, it must be added to a reaction set, and then have that set added to a Fluid Package. Click on “Add Set” and then add Rxn – 1 to the Active List, and then close the window.
7. Now the Reaction set must be added to the Fluid Package. Click “Add to FP”, select the appropriate reaction set, and then click “Add Set to Fluid Package” on the new window. After doing so, the reaction is completely ready to go.
Entering the Simulation
Once the components, fluids package and applicable reactions are selected, the Simulation is ready to be run. Click on “Enter Simulation Environment” in the Simulation Basis Manager window.
Working in the PFD
Re-Entering the Simulation Basis Manager
When the basis of the simulation has to be changed, the Simulation Basis Manager needs to be re-entered. Simply click on the icon on the top toolbar to re-enter it.
Accidentally Closing the PFD
Sometimes, people accidentally click the X on the PFD. To get it back, simply go to Tools –> PFDs, make sure “Case” is selected, then click “View”
Placing Material and Energy Streams
1. Material Streams are used to transport the material components from process units in the simulation. To place a material stream, click the Blue arrow on the simulation toolbar and then click somewhere on the turquoise simulation window.
2. Energy streams are used to specify how much energy a process unit such as a pump or compressor needs. To place an energy stream, click on the red arrow on the simulation toolbar, and then place it on the simulation window.
Renaming Streams
In order to make the simulation easy to follow, the streams need to be renamed. Double click on the arrow to bring up the properties window for stream 1. To rename it, click on the tab next to “Stream Name” and simply type in the appropriate name for it.
Placing Units
To place process units, simply select them from the Simulation Toolbar, and place them on the PFD.
Note: If the cursor hovers over an item on the toolbar, a text box appears; telling which item is going to be selected.
Accidentally Closing the Simulation Tool bar
Sometimes, people will accidentally click the small X on the Simulation Toolbar. To get it back click on the button to bring it back.
Specifying a Material Stream
1. In all chemical processes, a number of properties or degrees of freedom must be specified. To specify properties a stream, double click on it to open up the specification menu. Select the appropriate column and simply type in the values of the specification.
Note: HYSYS allows you to enter in any unit you wish. To specify the unit of the number that is being entered in, simply click on the arrow next to the unit to bring down a menu. Simply select the desired unit to input.
2. Just specifying the flowrate, temperature and pressure is not enough to fully specify the properties of the stream, thus no calculations can occur on it. To fully specify the stream, click on the text labeled “Composition”. To enter in the compositions Click on the box that says “<empty>” and enter in .7.
3. Doing so will bring up a new window called “Input Composition for Stream: Feed”. Enter in the remaining compositions of the stream; keeping in mind that the total fractions must add up to 1 otherwise an error will result. Note that different composition basis can be selected on the right. After entering in the composition, the stream color will turn from turquoise to a dark blue.
Viewing and Printing Necessary Data From the HYSYS Simulation
Simple Data Checks
To perform simple and quick checks of the properties of 1 stream, simply double click on the stream to bring up its specification menu. Instead of specifying properties, HYSYS displays the properties that it has solved for, and those numbers are in black. Click on the tabs on the left to get different and more specific properties of the stream.
Workbooks
1. To get a more in-depth, printable view the stream properties, HYSYS can create a workbook. To create a workbook, clicking “Tools” –> “Workbooks” will bring up the workbook selector. Double click on “Case” to bring up a summary of all the properties on the process and energy streams.
2. To add additional properties not displayed by default, click on “Workbook” –> “Setup” in the main tool bar. Once there, click on “Add” under the Variables section and scroll down until the desired property is located. Close the Setup window and the workbook is now updated with the desired properties.
Note: The “Workbook” option in the main tool bar will only be present if the workbook is open.
Printing
To print the workbook, leave it open and go to File –> Print in the main toolbar. If the entire workbook doesn’t need to be printed, click on the “+” and deselect the undesired sections, and then click Print.