Repeat Problem 4.24, but changing the perforation size to $4.5 mathrm{~mm}$, keeping everything else constant. Data From
Question:
Repeat Problem 4.24, but changing the perforation size to $4.5 \mathrm{~mm}$, keeping everything else constant.
Data From Problem 4.24:-
A dilute aqueous solution of methanol is to be stripped with steam in a sievetray tower. The conditions chosen for design are
The equilibrium data at this concentration indicate that $m=2.5$ (Perry and Chilton, 1973).
(a) Design a suitable cross-flow sieve tray for such a tower. Take $d_{o}=6.0 \mathrm{~mm}$ on an equilateral-triangular pitch $12 \mathrm{~mm}$ between hole centers, punched in stainless-steel sheet metal $2 \mathrm{~mm}$ thick. Use a weir height of $50 \mathrm{~mm}$. Design for an $80 \%$ approach to the flood velocity. Report details respecting tower diameter, tray spacing, weir length, gas-pressure drop, and entrainment in the gas. Check for excessive weeping.
(b) Estimate the tray efficiency corrected for entrainment for the design reported in part (a).
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