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The liquid-phase reaction A+B→C_follows an elementary rate law and is carried out isothermally in a flow system. The concentrations of the A and B feed streams are 2 M before mixing. The volumetric flow rate of each stream is 5 dm/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a 200 dm CSTR that can be heated to 77 °C or cooled to 0 °C, and the other is 800 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. a) 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? %3D What would your answer part (a) be if the reactor were cooled to 0 °C? c) What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series?

The liquid-phase reaction A+B→C_follows an elementary rate law and is carried out isothermally in a flow system. The concentrations of the A and B feed streams are 2 M before mixing. The volumetric flow rate of each stream is 5 dm/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a 200 dm CSTR that can be heated to 77 °C or cooled to 0 °C, and the other is 800 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. a) 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? %3D What would your answer part (a) be if the reactor were cooled to 0 °C? c) What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series?

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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6- The liquid-phase reaction A+B→C follows an elementary rate law and is carried out isothermally in a flow system. The concentrations of the A and B feed streams are 2 M before mixing. The volumetric flow rate of each stream is 5 dm/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a 200 dm CSTR that can be heated to 77 °C or cooled to 0 °C, and the other is 800 dm³ PFR operated at 300 K that cannot be heated or cooled but can be painted red or black. Note that k 0.07 dm/mol.min at 300 K and E =20 kcal/mol. a) How long would it take to achieve 90% conversion in a 200 dm³ batch reactor with CA0 = CB0 = 1 M after mixing at a temperature of 77 °C? b) What would your answer to part (a) be if the reactor were cooled to 0 °C? c) What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series?
Transcribed Image Text:6- The liquid-phase reaction A+B→C follows an elementary rate law and is carried out isothermally in a flow system. The concentrations of the A and B feed streams are 2 M before mixing. The volumetric flow rate of each stream is 5 dm/min, and the entering temperature is 300 K. The streams are mixed immediately before entering. Two reactors are available. One is a 200 dm CSTR that can be heated to 77 °C or cooled to 0 °C, and the other is 800 dm³ PFR operated at 300 K that cannot be heated or cooled but can be painted red or black. Note that k 0.07 dm/mol.min at 300 K and E =20 kcal/mol. a) How long would it take to achieve 90% conversion in a 200 dm³ batch reactor with CA0 = CB0 = 1 M after mixing at a temperature of 77 °C? b) What would your answer to part (a) be if the reactor were cooled to 0 °C? c) What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series?
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