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Elements of Chemical Reaction Engineering, 6th Edi P5-9A OEQ (Old Exam Question). The liquid-phase reaction A + B → C follows an elementary rate law and is carried out isothermally in a flow sys- tem. The concentrations of the A and B feed streams are each 2 M before mix- ing. The volumetric flow rate of each stream is 5 dm³/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a gray, 200.0-dm³ CSTR that can be heated to 77°C or cooled to 0°C, and the other is a white, 800.0-dm³ PFR operated at 300 K that cannot be heated or cooled but can be painted red or black. Note that k = 0.07 dm³/mol · min at 300 K and E = 20 kcal/mol. 1. Which reactor and what conditions do you recommend? Explain the reason for your choice (e.g., color, cost, space avail- able, weather conditions). Back up your reasoning with the appropriate calcula- tions. 2. How long would it take to achieve 90% conversion in a 200-dm³ batch reactor with CAO = CB0 = 1 M after mixing at a temperature of 77°C?

Elements of Chemical Reaction Engineering, 6th Edi P5-9A OEQ (Old Exam Question). The liquid-phase reaction A + B → C follows an elementary rate law and is carried out isothermally in a flow sys- tem. The concentrations of the A and B feed streams are each 2 M before mix- ing. The volumetric flow rate of each stream is 5 dm³/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a gray, 200.0-dm³ CSTR that can be heated to 77°C or cooled to 0°C, and the other is a white, 800.0-dm³ PFR operated at 300 K that cannot be heated or cooled but can be painted red or black. Note that k = 0.07 dm³/mol · min at 300 K and E = 20 kcal/mol. 1. Which reactor and what conditions do you recommend? Explain the reason for your choice (e.g., color, cost, space avail- able, weather conditions). Back up your reasoning with the appropriate calcula- tions. 2. How long would it take to achieve 90% conversion in a 200-dm³ batch reactor with CAO = CB0 = 1 M after mixing at a temperature of 77°C?

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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Elements of Chemical Reaction Engineering, 6th Edi 3. What would your answer to part (b) be if the reactor were cooled to 0°C? (Ans: 2.5 days) 4. What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series? In parallel with 5 mol/min to each?
Transcribed Image Text:Elements of Chemical Reaction Engineering, 6th Edi 3. What would your answer to part (b) be if the reactor were cooled to 0°C? (Ans: 2.5 days) 4. What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series? In parallel with 5 mol/min to each?
Elements of Chemical Reaction Engineering, 6th Edi P5-9A OEQ (Old Exam Question). The liquid-phase reaction A + B → C follows an elementary rate law and is carried out isothermally in a flow sys- tem. The concentrations of the A and B feed streams are each 2 M before mix- ing. The volumetric flow rate of each stream is 5 dm³/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a gray, 200.0-dm³ CSTR that can be heated to 77°C or cooled to 0°C, and the other is a white, 800.0-dm³ PFR operated at 300 K that cannot be heated or cooled but can be painted red or black. Note that k = 0.07 dm³/mol. min at 300 K and E = 20 kcal/mol. 1. Which reactor and what conditions do you recommend? Explain the reason for your choice (e.g., color, cost, space avail- able, weather conditions). Back up your reasoning with the appropriate calcula- tions. 2. How long would it take to achieve 90% conversion in a 200-dm³ batch reactor with CAO = CB0 = 1 M after mixing at a temperature of 77°C? 688
Transcribed Image Text:Elements of Chemical Reaction Engineering, 6th Edi P5-9A OEQ (Old Exam Question). The liquid-phase reaction A + B → C follows an elementary rate law and is carried out isothermally in a flow sys- tem. The concentrations of the A and B feed streams are each 2 M before mix- ing. The volumetric flow rate of each stream is 5 dm³/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a gray, 200.0-dm³ CSTR that can be heated to 77°C or cooled to 0°C, and the other is a white, 800.0-dm³ PFR operated at 300 K that cannot be heated or cooled but can be painted red or black. Note that k = 0.07 dm³/mol. min at 300 K and E = 20 kcal/mol. 1. Which reactor and what conditions do you recommend? Explain the reason for your choice (e.g., color, cost, space avail- able, weather conditions). Back up your reasoning with the appropriate calcula- tions. 2. How long would it take to achieve 90% conversion in a 200-dm³ batch reactor with CAO = CB0 = 1 M after mixing at a temperature of 77°C? 688
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