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Free_Kalibri [48]
3 years ago
11

a binary mixture is to be fed a continuous distillation column. calculate the minimum number of trays required to achieve a sepa

rate from 4 mole percentage to 96 mole percentage distillate in a binary column with alpha 2.5
Chemistry
1 answer:
Taya2010 [7]3 years ago
3 0

Answer:

minimum number of trays:

N = 7 trays

Explanation:

minimum number (N):

  • N = ( Log ( (Xd / ( 1 - Xd ))  * (( 1 - Xb ) / Xb )) ) / Log α....Fenske's Eq. binary mixture

∴ α = 2.5

∴ Xd = 0.96.......molar 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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