Abinary mixture is to be fed a continuous distillation column. calculate the minimum number of trays required to achieve a separate from 4 mole percentage to 96 mole percentage distillate in a binary column with alpha 2.5

minimum number of trays:

N = 7 trays

Explanation:

minimum number (N):

∴ α = 2.5

∴ Xd = 0.96molar fraction the distillate

∴ Xb = 0.04 molar fraction in the bottoms

⇒ N = ( Log  ( ( 0.96 / ( 1 - 0.96 ) ) * ( ( 1 - 0.04 ) / 0.04 )) ) / Log ( 2.5 )

⇒ N = 6.94 ≅ 7 trays

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