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The irreversible first order gas phase reaction A B Is carried out in an isothermal packed bed reactor. The pressure gradient along the length of the packed bed is approximated as constant at dP dw =-0.2 atm/kg With the present reaction system, 86.5% conversion is realized. The entering pressure is 20 atm. The catalyst mass is 60 kg. It is proposed to replace the existing plug flow reactor with one of the following systems: a) A fluidized bed reactor (modeled as a CSTR) with the same catalyst weight and in which there will be virtually no pressure drop. b) Re-packing the existing reactor with a new type of catalyst. With this new catalyst the bed has the pressure drop relationship of P = (1-aw) P where the parameter a for this catalyst is 0.01 kg*1. If the fluidized bed reactor and the re-packed plug flow reactor are to be operated under the same conditions of temperature and pressure as the existing reactor, which option will result in a higher conversion?

The irreversible first order gas phase reaction A B Is carried out in an isothermal packed bed reactor. The pressure gradient along the length of the packed bed is approximated as constant at dP dw =-0.2 atm/kg With the present reaction system, 86.5% conversion is realized. The entering pressure is 20 atm. The catalyst mass is 60 kg. It is proposed to replace the existing plug flow reactor with one of the following systems: a) A fluidized bed reactor (modeled as a CSTR) with the same catalyst weight and in which there will be virtually no pressure drop. b) Re-packing the existing reactor with a new type of catalyst. With this new catalyst the bed has the pressure drop relationship of P = (1-aw) P where the parameter a for this catalyst is 0.01 kg*1. If the fluidized bed reactor and the re-packed plug flow reactor are to be operated under the same conditions of temperature and pressure as the existing reactor, which option will result in a higher conversion?

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
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Problem 2 The irreversible first order gas phase reaction A → B Is carried out in an isothermal packed bed reactor. The pressure gradient along the length of the packed bed is approximated as constant at dP = -0.2 atm/kg dW With the present reaction system, 86.5% conversion is realized. The entering pressure is 20 atm. The catalyst mass is 60 kg. It is proposed to replace the existing plug flow reactor with one of the following systems: a) A fluidized bed reactor (modeled as a CSTR) with the same catalyst weight and in which there will be virtually no pressure drop. b) Re-packing the existing reactor with a new type of catalyst. With this new catalyst the bed has the pressure drop relationship of P = (1-aw) / P where the parameter for this catalyst is 0.01 kg-¹. If the fluidized bed reactor and the re-packed plug flow reactor are to be operated under the same conditions of temperature and pressure as the existing reactor, which option will result in a higher conversion?
Transcribed Image Text:Problem 2 The irreversible first order gas phase reaction A → B Is carried out in an isothermal packed bed reactor. The pressure gradient along the length of the packed bed is approximated as constant at dP = -0.2 atm/kg dW With the present reaction system, 86.5% conversion is realized. The entering pressure is 20 atm. The catalyst mass is 60 kg. It is proposed to replace the existing plug flow reactor with one of the following systems: a) A fluidized bed reactor (modeled as a CSTR) with the same catalyst weight and in which there will be virtually no pressure drop. b) Re-packing the existing reactor with a new type of catalyst. With this new catalyst the bed has the pressure drop relationship of P = (1-aw) / P where the parameter for this catalyst is 0.01 kg-¹. If the fluidized bed reactor and the re-packed plug flow reactor are to be operated under the same conditions of temperature and pressure as the existing reactor, which option will result in a higher conversion?
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