Vapor-liquid phase equilibrium data for methanol and water at 101.3 kPa are tabulated. The data are from J. G. Dunlop's 1948 M.S. thesis at the Brooklyn Polytechnic Institute. Plot the data to generate a T-y-x diagram (similar to Fig. 5.13). Then refer to your plot to answer the following questions. (a) What is the boiling point of methanol at 101.3 kPa? What is the boil- ing point of water at 101.3 kPa? What are the dew point and bubble point temperatures for a mixture containing 50 mol% methanol/50 mol% water at 101.3 kPa? If a mixture of 50 mol% methanol/50 mol% water is at 101.3 kPa and 95°C, is it a liquid, a vapor, or both? (b) A liquid containing 20 mol% methanol/80 mol%.water is heated to 89.3°C. The pressure is 101.3 kPa. Use these data to determine the fraction of the feed that is vaporized, and the composition of the and liquid phases. Calculate the fractional recovery of methanol in the vapor stream and the separation factor. vapor .3 71.2 73.1 75.3 78.0 81.7 84.4 87.7 89.3 91.2 93.5 96.4 100.0 70 0.825 0.779 0.729 0.665 0.579 0.517 0.418 0.365 0.304 0.230 0.134 0.00 19 "00 0.600 0.500 0.400 0.300 0.200 0.150 0.100 0.080 0.060 0.040 0.020 0.00 22
Vapor-liquid phase equilibrium data for methanol and water at 101.3 kPa are tabulated. The data are from J. G. Dunlop's 1948 M.S. thesis at the Brooklyn Polytechnic Institute. Plot the data to generate a T-y-x diagram (similar to Fig. 5.13). Then refer to your plot to answer the following questions. (a) What is the boiling point of methanol at 101.3 kPa? What is the boil- ing point of water at 101.3 kPa? What are the dew point and bubble point temperatures for a mixture containing 50 mol% methanol/50 mol% water at 101.3 kPa? If a mixture of 50 mol% methanol/50 mol% water is at 101.3 kPa and 95°C, is it a liquid, a vapor, or both? (b) A liquid containing 20 mol% methanol/80 mol%.water is heated to 89.3°C. The pressure is 101.3 kPa. Use these data to determine the fraction of the feed that is vaporized, and the composition of the and liquid phases. Calculate the fractional recovery of methanol in the vapor stream and the separation factor. vapor .3 71.2 73.1 75.3 78.0 81.7 84.4 87.7 89.3 91.2 93.5 96.4 100.0 70 0.825 0.779 0.729 0.665 0.579 0.517 0.418 0.365 0.304 0.230 0.134 0.00 19 "00 0.600 0.500 0.400 0.300 0.200 0.150 0.100 0.080 0.060 0.040 0.020 0.00 22
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:**Vapor-Liquid Phase Equilibrium Data for Methanol and Water**
This section provides phase equilibrium data for methanol and water at 101.3 kPa, sourced from J.G. Dunlop's 1948 M.S. thesis at the Brooklyn Polytechnic Institute. The goal is to use this data to generate a T-y-x diagram and to answer several questions about the system.
### Key Questions:
**(a)**
1. Determine the boiling point of methanol and water at 101.3 kPa.
2. Find the dew point and bubble point temperatures for a mixture of 50 mol% methanol and 50 mol% water at 101.3 kPa.
3. Assess whether a mixture of 50 mol% methanol and 50 mol% water at 101.3 kPa and 95°C results in a liquid, vapor, or both.
**(b)**
- A liquid with 20 mol% methanol and 80 mol% water is heated to 89.3°C at 101.3 kPa.
- Determine the fraction of the feed vaporized and the composition of both vapor and liquid phases.
- Calculate the fractional recovery of methanol in the vapor stream and the separation factor.
### Data Table:
| T, °C | 64.5 | 65.0 | 66.0 | 67.5 | 69.3 | 71.2 | 73.1 | 75.3 | 78.0 | 81.7 | 84.4 | 87.7 | 89.3 | 91.2 | 93.5 | 96.4 | 100.0 |
|-------|------|------|------|------|------|------|------|------|------|------|------|------|------|------|------|------|-------|
| y<sub>h2o</sub> | 1.00 | 0.979| 0.958| 0.915| 0.870| 0.825| 0.779| 0.729| 0.665| 0.579| 0.517| 0.418| 0.365| 0.304| 0.230| 0.134| 0.00 |
| x<sub>meth</sub> | 1.00
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