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Questions and Answers
What is the thermodynamic model used in the simulation for generating VLE data?
Which property package is selected for the simulation in this experiment?
What is the first step in starting the DWSIM simulation for VLE data generation?
What is the pressure setting used to generate the Txy diagram in the provided data?
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Which property package is specified for creating the Txy diagram using Raoult’s Law?
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Which components are specified for the VLE data generation?
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When generating the T-x-y data for the Water-Ethanol system, which methods should be compared?
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What is required in the flowsheeting section to generate binary VLE?
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What is the primary purpose of generating P-x-y data for the benzene-toluene system at 120 °C?
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What is the x-axis basis used for the Txy diagrams described in the content?
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Study Notes
Experiment Objective
- Generate Vapor-Liquid Equilibrium (VLE) data for a binary system composed of Benzene and Toluene at 1 atm pressure.
Experiment Setup
- Utilizes DWSIM simulation software (version 5.1 - Classic UI).
- Uses Raoult's Law as the thermodynamic model, assuming an ideal system.
Procedure
- Step 1: Create a new steady-state simulation in DWSIM.
- Step 2: Select Benzene and Toluene as the components from the ChemSep database.
- Step 3: Add Raoult’s Law as the property package and a default flash algorithm.
- Step 4: Select desired unit system.
- Step 5: Open the flowsheeting section.
- Step 6: Add a material stream object to the flowsheet.
- Step 7: Attach a "Binary Envelope" utility to the material stream.
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Step 8: Open the Binary Envelope window:
- For Txy Plot: Set Compound 1 to Benzene, Compound 2 to Toluene, Envelope Type to Txy, Txy Diagram Options to VLE, X axis basis to Mole fraction, Pressure to 1 atm, and Property Package to PP_1 (Raoult’s Law).
- For xy (VLE) Plot: Set Compounds, Envelope Type, Txy Diagram Options, X axis basis, Pressure, and Property Package as before, but change Envelope Type to (T)xy.
Self-Learning Exercises
- Generate P-x-y data for Benzene-Toluene at 120°C.
- Generate T-x-y data at 5 bar and compare results with data at 1 bar.
- Generate T-x-y data for Water-Ethanol at 1 bar using both "Ideal" and "NRTL" or "Peng Robinson" methods, then compare results.
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Description
Explore the Vapor-Liquid Equilibrium (VLE) data generation for a binary system of Benzene and Toluene using DWSIM software. This quiz covers the experimental setup, procedure, and thermodynamic models involved in the simulation process at 1 atm pressure.
