Repeat Example (11-1) except at (400.0 mathrm{kPa} . mathrm{F}=1000.0 mathrm{lb} mathrm{mol} / mathrm{h}, mathrm{L} / mathrm{D}) (=4.0),
Question:
Repeat Example \(11-1\) except at \(400.0 \mathrm{kPa} . \mathrm{F}=1000.0 \mathrm{lb} \mathrm{mol} / \mathrm{h}, \mathrm{L} / \mathrm{D}\) \(=4.0\), distillate is \(99.9 \mathrm{~mol} \% \mathrm{n}\)-hexane, and bottoms is \(0.1 \mathrm{~mol} \% \mathrm{n}\) hexane. At this pressure, \(\mathrm{E}_{\mathrm{o}}\) is determined in Problem 10.D1, the relative volatility depends on pressure, and diameter is calculated in Problem 10.D5. Hint: See answers to problems 10.D1 and 10.D5 in back of book immediately before the index.
a. Find \((\mathrm{L} / \mathrm{D})_{\min }\).
b. Find \(_{N \text { min }}\).
c. Estimate \(\mathrm{N}_{\text {equil }}\).
\section*{d. Estimate \(\mathrm{N}_{\text {actual }}\).}
e. Find cost of shells and trays using the bare module cost calculation procedure and the data in Table 11-2. Update costs to 2020.
Example 11-1
Example 11-2
Example 11-3
Table 11-2
Data From Problem 10.D1
Repeat Example 10-1 for an average column pressure of \(400.0 \mathrm{kPa}\).
Example 10-1
Data From Problem 10.D5
Repeat Example 10-2 except calculate the diameter at the bottom of the column at a pressure of \(400.0 \mathrm{kPa}\). The surface tension of pure \(\mathrm{n}-\) heptane at \(20^{\circ} \mathrm{C}\) is 20.14 dynes \(/ \mathrm{cm}(0.0214 \mathrm{~N} / \mathrm{m})\), and the temperature coefficient is \(-0.0980 \mathrm{dynes} / \mathrm{cm} / \mathrm{K}\) (www.surface-tension.de). Use the DePriester chart to estimate bottoms temperature.
Example 10-2
Example 10-1
Step by Step Answer:
Separation Process Engineering Includes Mass Transfer Analysis
ISBN: 9780137468041
5th Edition
Authors: Phillip Wankat