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A mixture of benzene vapor and flue gas contains 12.7 mole % benzene and is to be scrubbed continuously in a packed tower operated at atmospheric pressure at 43°C. The tower is to be designed to treat 36000 fte per hour of entering gas and the exit gas is to contain 1.5 mole % benzene. Pure solvent will be supplied at the rate of 28 Ibmo/hr. The solution of benzene in oil may be assumed to follow Raoults law and the vapor pressure of pure solvent at 43°C is 0.263 atm. It is agreed that the maximum allowable superficial velocity of the gas is 1 ftusec. Calculate the height of the tower required, assuming that the height of a transfer unit is 2 ft. S, 5.8 ft a. 6.5 ft b. 7.7 ft d. 9.3 ft

A mixture of benzene vapor and flue gas contains 12.7 mole % benzene and is to be scrubbed continuously in a packed tower operated at atmospheric pressure at 43°C. The tower is to be designed to treat 36000 fte per hour of entering gas and the exit gas is to contain 1.5 mole % benzene. Pure solvent will be supplied at the rate of 28 Ibmo/hr. The solution of benzene in oil may be assumed to follow Raoults law and the vapor pressure of pure solvent at 43°C is 0.263 atm. It is agreed that the maximum allowable superficial velocity of the gas is 1 ftusec. Calculate the height of the tower required, assuming that the height of a transfer unit is 2 ft. S, 5.8 ft a. 6.5 ft b. 7.7 ft d. 9.3 ft

Introduction to Chemical Engineering Thermodynamics
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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A mixture of benzene vapor and flue gas contains 12.7 mole % benzene and is to be scrubbed continuously in a packed tower operated at atmospheric pressure at 43°C. The tower is to be designed to treat 36000 fe per hour of entering gas and the exit gas is to contain 1.5 mole % benzene. Pure solvent will be supplied at the rate of 28 Ibms/hr. The solution of benzene in oil may be assumed to follow Raoults law and the vapor pressure of pure solvent at 43°C is 0.263 atm. It is agreed that the maximum allowable superficial velocity of the gas is 1 fisec. Calculate the height of the tower required, assuming that the height of a transfer unit is 2 ft. a. 6.5 ft S. 5.8 ft b. 7.7 ft d. 9.3 ft
Transcribed Image Text:A mixture of benzene vapor and flue gas contains 12.7 mole % benzene and is to be scrubbed continuously in a packed tower operated at atmospheric pressure at 43°C. The tower is to be designed to treat 36000 fe per hour of entering gas and the exit gas is to contain 1.5 mole % benzene. Pure solvent will be supplied at the rate of 28 Ibms/hr. The solution of benzene in oil may be assumed to follow Raoults law and the vapor pressure of pure solvent at 43°C is 0.263 atm. It is agreed that the maximum allowable superficial velocity of the gas is 1 fisec. Calculate the height of the tower required, assuming that the height of a transfer unit is 2 ft. a. 6.5 ft S. 5.8 ft b. 7.7 ft d. 9.3 ft
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