Simulation Basis Manager

The Simulation Basis Manager is property view that allows you to create and manipulate multiple fluid packages or component lists in the simulation. 

Select File/New/Case or press Crtl+N or click on the New Case to start a new case. In HYSYS, your simulation is referred to as a case . This will open up the Simulation Basis Manager which is where all of the components and their properties can be specified. 

To add components to the simulation, click on the Add button in the Simulation Basis Manager. 

At the bottom of the components page, you can give your component list a name. Once this is complete, simply close the window by clicking the red X at the upper right hand comer of the component list view, which will return you to the simulation basis manager. 

From the simulation basis manager (Figure 1-2), select the Fluid Pkgs tab. 

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. 

Every hypo you create is part of a Hypo Group. By default, this hypo is placed in HypoGroupl. You can add additional groups and move hypo components between groups. This is done on the Hypotheticals tab of the Simulation Basis Manager. 

Click on the Reactions tab in the Simulation Basis Manager view. Note that all of the components are shown in the Rxn Components list. 

Click the Enter Basis Environment button to view the Simulation Basis Manager. 

Simulation Basis Manager will pop up. Click Add. Fluid Package window will be opened. Choose Peng Robinson as Base Property Package. 

Click Enter Simulation Environment at the bottom of Simulation Basis Manager. Click Heater in the Object Palette and click it on Process Flow Diagram (PFD). Click General Reactor, three different reactors will pop up, click conversion reactor and click it on PFD. Do the same for the Cooler and Separator. 

Simulation Basis Manager -Curient Fluid Packages------... 

The first step in creating the model is the selection of a standard set of components and a thermodynamic basis to model the physical properties of these components. When we create a new simulation, we must choose the components and thermodynamics appropriate for the process using the Simulation Basis Manager. The Simrdation Basis Manager allows us to define components and associated thermodynamics in Aspen HYSYS. Components maybe added manually through the Add button shown in Figure 4.41. However, we have a predetermined set of components for the FCC model. 

Once we import a component list, HYSYS will create a new component list called Component List-1 . We can view the elements of this component lists by selecting Component llst-l and clicking on View in the Simulation Basis Manager (Figure 4.43). We can add additional components or modify the order of the elements in the component list We note drat the standard FCC component list is quite complete and model most refining processes. The rigorous FCC model does not predict components that are not part of the petroleumCompl. cml list. However, these additional components may be used in production fractionation models ofthe associated with the FCC model. For the purposes of this simulation, we will add cis-2-butene and benzene. 

The next step is the selection of a Fluid Package for this model. The Fluid Package refers the thermodynamic system associated with the chosen list of components. We move to the Fluid Pkgs tab in the Simulation Basis Manager and add click Add (Figure 4.45) Aspen FfYSYS will automatically choose the component list and present options for a Property Package for these components. 

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