A still is charged with 1000 moles of a binary mixture that is 82.0 mole% cyclohexane (more volatile) component A and 18
Posted: Fri Jul 08, 2022 6:08 am
cyclohexane toluene Pvp (mmHg) Pvp (mmHg) 760.5 298.8 782.8 308.9 805.6 319.2 828.9 329.7 852.7 340.6 877.1 351.8 902.0 363.2 927.5 374.9 953.5 387.0 980.0 399.3 1007.2 411.9 1034.9 424.9 1063.2 438.2 1092.1 451.8 1121.6 465.8 1151.7 480.1 1182.4 494.8 1213.8 509.8 1245.8 525.2 1278.4 540.9 1311.7 1345.6 1380.2 1415.5 1451.5 1488.2 1525.6 1563.6 1602.4 1642.0 1682.3 1723.3 557.0 573.5 590.3 607.6 625.3 643.3 661.8 680.7 Temp (°C) 80.75 81.71 82.68 0.907 0.961 83.64 0.863 0.941 $4.61 0.820 0.919 85.57 0.778 0.897 36.54 0.737 0.875 87.50 0.698 0.851 $8.47 0.659 0.827 89.43 0.622 0.801 90.40 0.586 0.775 0.550 0.749 0.516 0.721 0.692 Volatile Component 94.25 95.22 X 91.36 92.32 0.482 93.29 -0.449 99.08 100.04 101.00 1.000 1.000 0.953 0.981 0.417 96.18 0.386 0.601 97.15 0.356 0.568 98.11 0.327 0.535 0.298 0.501 0.270 0.465 0.242 0.429 101.97 0.215 0.391 102.93 0.189 0.352 103.90 0.164 0.312 104.86 0.139 0.271 105.83 0.114 0.229 106.79 0.090 0.186 107.76 0.067 0.141 108.72 0.044 0.095 0.663 0.632 700.0 719.7 739.9 109.69 0.022 760.5 110.65 0.000 1/ly-x) Ax Avg(1/(y-x)) 10.054 8.381 7.287 6.527 5.976 5.569 5.265 5.038 4.872 4.757 4.687 4.656 4.664 4.711 4,799 4.931 5.117 5.366 5.697 6.135 6.725 7.536 8.700 10.477 13.475 19.524 0.048 37.785 0.000 0.386 0.319 0.273 0.240 0.216 0.197 0.182 0.171 0.162 0.154 0.149 0.145 0.142 0.140 0.140 0.141 0.144 0.148 0.155 0.164 0.178 0.198 0.229 0.280 0.377 0.640 Integral Summation 0.386 0.704 0.978 1.218 1.434 1.631 1.813 1.984 2.146 2.301 2.449 2.594 2.736 2.877 3.017 3.158 3.302 3.450 3.605 3.769 3.948 4.146 4.375 4.654 5.031 5.672
Using the data provided.... a) What is the composition of the very first bubble vaporized in this process? Mole fraction of light component YA = b) What is the composition of the last bubble vaporized in the process? Mole fraction of light component YA = c) What is the composition of the residue remaining in the still, Mole fraction of light component XA = d) What is the average mole fraction of the distillate? Yavg= If a model assuming constant K-value is used ... e) What is a suitable average K-value? Kavg= f) What is the composition of the residue remaining in the still using the constant K-value assumption? Mole fraction of light component XA =