Example 3.7: For the rectification in previous example, where a benzene-toluene feed is being distilled to give a distillate composition of xd =0.95 and a bottoms composition of xw = 0.10, %3D...

Extracted text: Example 3.7: For the rectification in previous example, where a benzene-toluene feed is being distilled to give a distillate composition of xd =0.95 and a bottoms composition of xw = 0.10, %3D calculate the following graphically and analytically. (a) Minimum reflux ratio Rm , (b) Minimum number of theoretical plates at total reflux. 1.0 YA q line 0.8- enriching operating line for Rm !! steps for total reflux 1.000 1.000 0.6- 0.780 0.900 4. 0.4- 5. 0.581 0.777 0.411 0.632 0.2- 0.258 0.456 0.130 0.261 0.2 0.4 0.6 0.8 1.0 Mole fraction in liquid, x Moie fraction in vapor, y