Project ForgeMass Transfer
Mass Transfer Operations
GATE 2018
Medium
A binary McCabe-Thiele distillation design targets xD=0.9; the enriching operating line's y-intercept is 0.3. The ratio of liquid to vapor molar flow rate in the enriching section is (rounded off to third decimal place)
0.667(± 0.02 accepted)
Explanation
Intercept=xD/(R+1)=0.3 ⟹ R+1=0.9/0.3=3 ⟹ R=2. L/V=R/(R+1)=2/3=0.667.
Source: GATE CH 2018 (2018)
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