Solve e, f and g P5-23g Walter White, Jesse Pinkman, and Mike Ehrmantraut stole 1000 gallons of methylamine during an episode of the TV series Breaking Bad. Shortly thereafter, Jesse and Mike decided they would getout of the cooking business and sell their shares of the methylamine. Walter wanted to keep all of the methylamine for future meth cooks and not let Jesse and Mike have their shares. Suppose Jesseand Mike decided to sabotage Walter's cooking operation by ruining the methylamine using the following gas phase reaction:2 CH3NH2 → (CH3)½NH + NH3or, in short:2A 2B+CThis reaction converts the methylamine to dimethylamine, using a silica-alumina catalyst. The molar flow rate into a packed-bed reactor is 23.6 mol/s and the entering pressure is 18 atm. Assumethere is no pressure drop or temperature change in the reactor. The reaction rate follows an elementary rate law in terms of partial pressure.ki = 4.25 x 10-6.mol and K, = 2.5atm geatalyst-s(a) Write the mole balance.(b) Write the rate law in terms of partial pressures.(c) Set up a stoichiometric table for this reaction.(d) Write the partial pressures in terms of conversion.(e) Write the rate law solely in terms of conversion.() What is the equilibrium conversion, X?(g) Write out your algorithm in terms of conversion.(h) How many kilograms of catalyst would Jesse need to load in a PBR to obtain a conversion of 0.9*X,? For X = 0.75 X,?(i) How many kilograms of catalyst would be needed to obtain 90% of the equilibrium conversion in a fluidized-bed reactor? If this weight is very, very large, what might you suggest to reduce theweight? (Ans.: W = 207.2 kg catalyst)() What conversion would be achieved in a 100 kg PBR with pressure drop and ==0.0098 kg-1? At what catalyst weight does the exit pressure fall below 1.0 atm?(k) Repeat (j) when pressure drop is accounted for with a = 6 x 10 kg-1. Ph.D. student Julia Faeth created this problem using modified data from J. W. Mitchell, et al., Ind. Eng. Chem. Res. 33,1994, pp. 181–184.

The elementary gas-phase reaction is given as: 2CH3NH2↔CH32NH+NH3 This reaction can be written as:…

P5-23g Walter White, Jesse Pinkman, and Mike Ehrmantraut stole 1000 gallons of methylamine during an episode of the TV series Breaking Bad. Shortly thereafter, Jesse and Mike decided they would get out of the cooking business and sell their shares of the methylamine. Walter wanted to keep all of the methylamine for future meth cooks and not let Jesse and Mike have their shares. Suppose Jesse and Mike decided to sabotage Walter's cooking operation by ruining the methylamine using the following gas phase reaction: 2 CH;NH2 + (CH3)½NH + NH3 or, in short: 2A 2B+C This reaction converts the methylamine to dimethylamine, using a silica-alumina catalyst. The molar flow rate into a packed-bed reactor is 23.6 mol/s and the entering pressure is 18 atm. Assume there is no pressure drop or temperature change in the reactor. The reaction rate follows an elementary rate law in terms of partial pressure. mol atm' gratalyst and K, = 2.5 -6 k = 4.25 x 10 (a) Write the mole balance. (b) Write the rate law in terms of partial pressures. (c) Set up a stoichiometric table for this reaction. (d) Write the partial pressures in terms of conversion. (e) Write the rate law solely in terms of conversion. () What is the equilibrium conversion, X? (g) Write out your algorithm in terms of conversion. (h) How many kilograms of catalyst would Jesse need to load in a PBR to obtain a conversion of 0.9*X,? For X = 0.75 X,? (i) How many kilograms of catalyst would be needed to obtain 90% of the equilibrium conversion in a fluidized-bed reactor? If this weight is very, very large, what might you suggest to reduce the weight? (Ans.: Ww = 207.2 kg catalyst) () What conversion would be achieved in a 100 kg PBR with pressure drop and == 0.0098 kg-1? At what catalyst weight does the exit pressure fall below 1.0 atm? (k) Repeat (j) when pressure drop is accounted for with a = 6 x 104 kg-1. Ph.D. student Julia Faeth created this problem using modified data from J. W. Mitchell, et al., Ind. Eng. Chem. Res. 33, 1994, pp. 181–184.

P5-23g Walter White, Jesse Pinkman, and Mike Ehrmantraut stole 1000 gallons of methylamine during an episode of the TV series Breaking Bad. Shortly thereafter, Jesse and Mike decided they would get out of the cooking business and sell their shares of the methylamine. Walter wanted to keep all of the methylamine for future meth cooks and not let Jesse and Mike have their shares. Suppose Jesse and Mike decided to sabotage Walter's cooking operation by ruining the methylamine using the following gas phase reaction: 2 CH;NH2 + (CH3)½NH + NH3 or, in short: 2A 2B+C This reaction converts the methylamine to dimethylamine, using a silica-alumina catalyst. The molar flow rate into a packed-bed reactor is 23.6 mol/s and the entering pressure is 18 atm. Assume there is no pressure drop or temperature change in the reactor. The reaction rate follows an elementary rate law in terms of partial pressure. mol atm' gratalyst and K, = 2.5 -6 k = 4.25 x 10 (a) Write the mole balance. (b) Write the rate law in terms of partial pressures. (c) Set up a stoichiometric table for this reaction. (d) Write the partial pressures in terms of conversion. (e) Write the rate law solely in terms of conversion. () What is the equilibrium conversion, X? (g) Write out your algorithm in terms of conversion. (h) How many kilograms of catalyst would Jesse need to load in a PBR to obtain a conversion of 0.9*X,? For X = 0.75 X,? (i) How many kilograms of catalyst would be needed to obtain 90% of the equilibrium conversion in a fluidized-bed reactor? If this weight is very, very large, what might you suggest to reduce the weight? (Ans.: Ww = 207.2 kg catalyst) () What conversion would be achieved in a 100 kg PBR with pressure drop and == 0.0098 kg-1? At what catalyst weight does the exit pressure fall below 1.0 atm? (k) Repeat (j) when pressure drop is accounted for with a = 6 x 104 kg-1. Ph.D. student Julia Faeth created this problem using modified data from J. W. Mitchell, et al., Ind. Eng. Chem. Res. 33, 1994, pp. 181–184.

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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Question

Solve e, f and g

P5-23g Walter White, Jesse Pinkman, and Mike Ehrmantraut stole 1000 gallons of methylamine during an episode of the TV series Breaking Bad. Shortly thereafter, Jesse and Mike decided they would get
out of the cooking business and sell their shares of the methylamine. Walter wanted to keep all of the methylamine for future meth cooks and not let Jesse and Mike have their shares. Suppose Jesse
and Mike decided to sabotage Walter's cooking operation by ruining the methylamine using the following gas phase reaction:
2 CH3NH2 → (CH3)½NH + NH3
or, in short:
2A 2B+C
This reaction converts the methylamine to dimethylamine, using a silica-alumina catalyst. The molar flow rate into a packed-bed reactor is 23.6 mol/s and the entering pressure is 18 atm. Assume
there is no pressure drop or temperature change in the reactor. The reaction rate follows an elementary rate law in terms of partial pressure.
ki = 4.25 x 10-6.
mol and K, = 2.5
atm geatalyst-s
(a) Write the mole balance.
(b) Write the rate law in terms of partial pressures.
(c) Set up a stoichiometric table for this reaction.
(d) Write the partial pressures in terms of conversion.
(e) Write the rate law solely in terms of conversion.
() What is the equilibrium conversion, X?
(g) Write out your algorithm in terms of conversion.
(h) How many kilograms of catalyst would Jesse need to load in a PBR to obtain a conversion of 0.9*X,? For X = 0.75 X,?
(i) How many kilograms of catalyst would be needed to obtain 90% of the equilibrium conversion in a fluidized-bed reactor? If this weight is very, very large, what might you suggest to reduce the
weight? (Ans.: W = 207.2 kg catalyst)
() What conversion would be achieved in a 100 kg PBR with pressure drop and ==0.0098 kg-1? At what catalyst weight does the exit pressure fall below 1.0 atm?
(k) Repeat (j) when pressure drop is accounted for with a = 6 x 10 kg-1. Ph.D. student Julia Faeth created this problem using modified data from J. W. Mitchell, et al., Ind. Eng. Chem. Res. 33,
1994, pp. 181–184.

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