Carbon dioxide-methanol-methyl tert-butyl ether

To simulate the ternary phase equilibrium diagram in Aspen Plus, the following steps are required: 1. Create a new simulation file: Open the Aspen Plus software, then click on the “File” menu and select “New” to create a new simulation file. 2. Add components: Select “Components” from the component library on the right side of the workspace, then find carbon dioxide, methanol, and methyl tert-butyl ether in the list and add them to the component library of the simulation. 3. Define the thermodynamic model: Click on the “Property Methods” tab and select an appropriate thermodynamic model. For such a system, it is recommended to choose the “UNIFAC” model. 4. Define the flowchart: Select an appropriate unit operator from the flowchart library on the left side of the workspace, such as the “Flash” operator (used for phase equilibrium), and drag it into the main simulation area. 5. Set the material flow: Define the material flow in the flow chart and specify the molar fractions of the components. Ensure the total molar fraction is 1. Adjust the parameters of the operator as needed. 6. Run simulation: After saving the simulation file, click the “Run” button to start the simulation. Aspen Plus calculates the composition and temperature of each phase, and plots phase equilibrium diagrams. Note: The steps above are only a general guide; the specific operations can be adjusted according to your particular requirements and simulation objectives. At the same time, you can also refer to Aspen Plus’s help documentation or online tutorials for more detailed guidance. .