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 dm® 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 dm? batch reactor with Cao = Cpo = | 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? ¢) What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series? 6- The liquid-phase reaction A+B→C follows an elementary rate law and is carried outisothermally in a flow system. The concentrations of the A and B feed streams are 2 Mbefore mixing. The volumetric flow rate of each stream is 5 dm/min, and the enteringtemperature is 300 K. The streams are mixed immediately before entering. Two reactorsare available. One is a 200 dm CSTR that can be heated to 77 °C or cooled to0 °C, and the other is 800 dm' PFR operated at 300 K that cannot be heated or cooled butcan 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 dm batch reactor with CA0= CB0 = 1 M after mixing at a temperature of 77 °C?%Db) 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 andconnected in series?

Answered: The liquid-phase reaction A+B→C follows…

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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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 dm® 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 dm? batch reactor with Cao = Cpo = | 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? ¢) What conversion would be obtained if the CSTR and PFR were operated at 300 K and connected in series?

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 dm' 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 dm batch reactor with CA0
= CB0 = 1 M after mixing at a temperature of 77 °C?
%D
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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