A benzene-air mixture is to be scrubbed in a simple counter-current absorption tower using a non- volatile absorption oil as solvent. The inlet gas contains 5% benzene and the entering gas flow is 600 lbmol/h. Solubility of benzene in oil follows Raoult's law. The tower operates isothermally at 80°F and the average molecular weight of the oil is 200 and the tower pressure is 1 atm. (a) What is the minimum oil (lb/h) needed to recover 90% of the entering benzene? (b) How many theoretical stages are required if the oil rate is 1.5 times the minimum? (c) If the overall gas-phase mass transfer coefficient is 2 lbmol/h-ft³ and the diameter of a packed tower is 2.5 m, how many meters is the height of the tower required?
A benzene-air mixture is to be scrubbed in a simple counter-current absorption tower using a non- volatile absorption oil as solvent. The inlet gas contains 5% benzene and the entering gas flow is 600 lbmol/h. Solubility of benzene in oil follows Raoult's law. The tower operates isothermally at 80°F and the average molecular weight of the oil is 200 and the tower pressure is 1 atm. (a) What is the minimum oil (lb/h) needed to recover 90% of the entering benzene? (b) How many theoretical stages are required if the oil rate is 1.5 times the minimum? (c) If the overall gas-phase mass transfer coefficient is 2 lbmol/h-ft³ and the diameter of a packed tower is 2.5 m, how many meters is the height of the tower required?
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
Related questions
Question
Transcribed Image Text:A benzene-air mixture is to be scrubbed in a simple counter-current absorption tower using a non-
volatile absorption oil as solvent. The inlet gas contains 5% benzene and the entering gas flow is
600 lbmol/h. Solubility of benzene in oil follows Raoult's law. The tower operates isothermally at
80°F and the average molecular weight of the oil is 200 and the tower pressure is 1 atm.
(a) What is the minimum oil (lb/h) needed to recover 90% of the entering benzene?
(b) How many theoretical stages are required if the oil rate is 1.5 times the minimum?
(c) If the overall gas-phase mass transfer coefficient is 2 lbmol/h-ft³ and the diameter of a
packed tower is 2.5 m, how many meters is the height of the tower required?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The