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1.A battery of N stirred tank reactors is arranged to operate isothermally in series. Each reactor has a volume of V m³ and is equipped with a perfect agitator so that the composition of the reactor effluent is the same as the tank contents. If initially the tanks contain pure solvent only, and at a time designated to, q m³/h of a reactant A of concentration Co kg moles/m³ are fed to the first tank, estimate the time required for the concentration of A leaving the Nth tank to be Cy kg moles/m³. The reaction can be represented stoichiometrically by the equation A KIB Bks B ks C and all the reactions are first order. There is no B or C in the feed but it may be assumed that the feed contains a catalyst that initiates the reaction as soon as the feed enters the first reactor.

1.A battery of N stirred tank reactors is arranged to operate isothermally in series. Each reactor has a volume of V m³ and is equipped with a perfect agitator so that the composition of the reactor effluent is the same as the tank contents. If initially the tanks contain pure solvent only, and at a time designated to, q m³/h of a reactant A of concentration Co kg moles/m³ are fed to the first tank, estimate the time required for the concentration of A leaving the Nth tank to be Cy kg moles/m³. The reaction can be represented stoichiometrically by the equation A KIB Bks B ks C and all the reactions are first order. There is no B or C in the feed but it may be assumed that the feed contains a catalyst that initiates the reaction as soon as the feed enters the first reactor.

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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81. A battery of N stirred tank reactors is arranged to operate isothermally in series. Each reactor has a volume of V m³ and is equipped with a perfect agitator so that the composition of the reactor effluent is the same as the tank contents. If initially the tanks contain pure solvent only, and at a time designated to, 9 m³/h of a reactant A of concentration Co kg moles/m³ are fed to the first tank, estimate the time required for the concentration of A leaving the Nth tank to be C kg moles/m³. The reaction can be represented stoichiometrically by the equation ki ks A B C k₂ and all the reactions are first order. There is no B or C in the feed but it may be assumed that the feed contains a catalyst that initiates the reaction as soon as the feed enters the first reactor.
Transcribed Image Text:81. A battery of N stirred tank reactors is arranged to operate isothermally in series. Each reactor has a volume of V m³ and is equipped with a perfect agitator so that the composition of the reactor effluent is the same as the tank contents. If initially the tanks contain pure solvent only, and at a time designated to, 9 m³/h of a reactant A of concentration Co kg moles/m³ are fed to the first tank, estimate the time required for the concentration of A leaving the Nth tank to be C kg moles/m³. The reaction can be represented stoichiometrically by the equation ki ks A B C k₂ and all the reactions are first order. There is no B or C in the feed but it may be assumed that the feed contains a catalyst that initiates the reaction as soon as the feed enters the first reactor.
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