Repeat Problem 10.D14, except calculate the diameter at the top of the column. Problem 10.D14 a. We

Question:

Repeat Problem 10.D14, except calculate the diameter at the top of the column.


Problem 10.D14

a. We are distilling methanol and water in a column packed with 1-in. ceramic Berl saddles. The bottoms composition is \(0.01 \mathrm{~mol} \%\) methanol. A total reboiler is used. The column operates at \(1.0 \mathrm{~atm}\) pressure. The feed to the column is a saturated liquid at 1000.0 \(\mathrm{kmol} /\) day and is \(40.0 \mathrm{~mol} \%\) methanol. \(\mathrm{L} / \mathrm{D}=2.0\). The distillate product is \(99.8 \mathrm{~mol} \%\) methanol. If we will operate at a vapor flow rate that is \(80 \%\) of flooding, calculate the diameter based on conditions at the bottom of the column. Data are available in Tables 2-8 and 10-4. Vapor is an ideal gas. Viscosity of water at \(100.0^{\circ} \mathrm{C}\) is \(0.26 \mathrm{cP}\).

Suppose we wanted to use 1 -in. plastic Intalox saddles. What diameter is required?

Part b can be done in one line once part a is finished.


Table 2-8

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Table 10-4

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