We wish to explore various reactor setups for the transformation of A into R. The feed contains 0.9 mol/L of A, 0.2 mol/L R; the desired product is to consist of 1.8 mol/L R. The transformation takes place by means of the elementary reaction with rate constant k = 0.1 L/mol. min. 2A+R+R+R a) What is the rate expression for this reaction? b) What is the concentration of A when 1.8 mol/L R has been produced in the reaction? c) The following table has been produced to assist with the calculation. What is the missing value? (0) £ CA mol/L 0.9 0.8 0.65 0.5 0.3 0.2 0.15 0.1 d) What reactor holding time will yield a product in which C₂ = 1.8 mol/L. You are asked to provide answers for any four of the five below options. Please show your calculations. (iii) (iv) (v) -1/rA in a plug flow reactor, in a mixed flow reactor (CSTR), 61.7284 39.0625 33.81234 40 79.36508 ? 261.4379 555.5556 a combination of mixed flow and plug flow, plug flow with recycle, multiple CSTR of different or same size. e) Which reactor design of the four requires the least volume?
We wish to explore various reactor setups for the transformation of A into R. The feed contains 0.9 mol/L of A, 0.2 mol/L R; the desired product is to consist of 1.8 mol/L R. The transformation takes place by means of the elementary reaction with rate constant k = 0.1 L/mol. min. 2A+R+R+R a) What is the rate expression for this reaction? b) What is the concentration of A when 1.8 mol/L R has been produced in the reaction? c) The following table has been produced to assist with the calculation. What is the missing value? (0) £ CA mol/L 0.9 0.8 0.65 0.5 0.3 0.2 0.15 0.1 d) What reactor holding time will yield a product in which C₂ = 1.8 mol/L. You are asked to provide answers for any four of the five below options. Please show your calculations. (iii) (iv) (v) -1/rA in a plug flow reactor, in a mixed flow reactor (CSTR), 61.7284 39.0625 33.81234 40 79.36508 ? 261.4379 555.5556 a combination of mixed flow and plug flow, plug flow with recycle, multiple CSTR of different or same size. e) Which reactor design of the four requires the least volume?
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:We wish to explore various reactor setups for the transformation of A into R. The feed contains 0.9
mol/L of A, 0.2 mol/L R; the desired product is to consist of 1.8 mol/L R. The transformation takes
place by means of the elementary reaction with rate constant k = 0.1 L/mol.min.
2A +R → R+R
a) What is the rate expression for this reaction?
b) What is the concentration of A when 1.8 mol/L R has been produced in the reaction?
c) The following table has been produced to assist with the calculation. What is the missing
value?
CA
-1/rA
mol/L
0.9
61.7284
0.8
39.0625
0.65
33.81234
0.5
40
0.3
79.36508
0.2
?
0.15
261.4379
0.1
555.5556
d) What reactor holding time will yield a product in which C₂ = 1.8 mol/L. You are asked to
provide answers for any four of the five below options. Please show your calculations.
(0)
in a plug flow reactor,
(ii)
in a mixed flow reactor (CSTR),
(ii)
a combination of mixed flow and plug flow,
(iv)
plug flow with recycle,
(v)
multiple CSTR of different or same size.
e) Which reactor design of the four requires the least volume?
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