Answer the following problems, and submit your answers to the drop box in Canvas that has been created for this module.
Please note:
Figure 5.2 shows the P-T phase envelopes for eight binary mixtures of Methane and Ethane at eight different compositions. The data was experimentally generated at IGT (Institute of Gas Technology) and presented in the Research Bulletin No. 22. The vapor pressure curves of Methane and Ethane bound the phase envelopes of the eight binary mixtures of Methane and Ethane at different proportions. From left to right, these proportions (molar compositions) are:
Mixture | Composition |
---|---|
Mixture 1 | 97.50% CH4 and 2.50% C2H6 (closest to 100% pure Methane vapor pressure curve) |
Mixture 2 | 92.50% CH4 and 7.50% C2H6 |
Mixture 3 | 85.16% CH4 and 14.84% C2H6 |
Mixture 4 | 70.00% CH4 and 30.00% C2H6 |
Mixture 5 | 50.02% CH4 and 49.98% C2H6 |
Mixture 6 | 30.02% CH4 and 69.98% C2H6 |
Mixture 7 | 14.98% CH4 and 85.02% C2H6 |
Mixture 8 | 5.00% CH4 and 95.00% C2H6 (closest to 100% pure Ethane vapor pressure curve) |
Using this phase behavior data, generate the P-x and T-x diagram for Methane/Ethane mixtures at T = – 40 F and P = 500 psia respectively.