Question

roblem 5.60 onts)ing a smaeverapicans alcohol, a CO,p-rich vapor containi sieve-tray be recovered by Pnts) When mo is fermented to produce a liquor containing ethyl mall mount of ethyl alcohol is evolved. The alcohol can absorption with n n with water in a sieve-tray tower. For the following conditions determine detenine t ne the number of equilibrium grap um stages using graphical method required for countercurrent nlow of liquid and gas, assuming transfer of all components except d ept ethyl alcohol. Neglect any change in the gas and liquid flow w rate (actual solute free absorben) is 50% above the minimum liquid rate r ofall componchssothermal, isobaric conditions in the tower and neglecting mass iso alcohol ratec The ligua mponents except Y 0.57X Entering gas: 180kmolh; 98% ???, 2% ethyl alcohol; 30°C, 110 kPa Entering liquid absorbent: 100% water; 30°C, I 10 kPa Required recovery (absorption) of ethyl al cohol: 97% A. Draw the absorption column and label it clearly using all known and unknown B. Complete the material Balance (8 points) (12 Points) C. Deiemine the numbering the gen grap paper. (15 points)

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