3.3.20 Scale-up Criteria of Agitation A small model reactor is to be built for scale up studies of the behavior of a proposed large industrial stirred tank reactor having 1000 times capacity. The bigger unit of 2 m diameter will have a liquid depth of 2 m. This will be fitted with a four bladed Rushton turbine of 0.6 m diameter. (a) Estimate the dimensions of the smaller unit. (b) For the optimum stirrer speed of 330 rpm observed in the smaller model, what will be the recommended speed in the industrial unit under the following conditions: (i) Power per unit volume is kept constant. (ii) Reynolds number does not change.
3.3.20 Scale-up Criteria of Agitation A small model reactor is to be built for scale up studies of the behavior of a proposed large industrial stirred tank reactor having 1000 times capacity. The bigger unit of 2 m diameter will have a liquid depth of 2 m. This will be fitted with a four bladed Rushton turbine of 0.6 m diameter. (a) Estimate the dimensions of the smaller unit. (b) For the optimum stirrer speed of 330 rpm observed in the smaller model, what will be the recommended speed in the industrial unit under the following conditions: (i) Power per unit volume is kept constant. (ii) Reynolds number does not change.
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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Transcribed Image Text:3.3.20
Scale-up Criteria of Agitation
A small model reactor is to be built for scale up studies of the behavior of a proposed large
industrial stirred tank reactor having 1000 times capacity. The bigger unit of 2 m diameter
will have a liquid depth of 2 m. This will be fitted with a four bladed Rushton turbine of
0.6 m diameter.
(a) Estimate the dimensions of the smaller unit.
(b) For the optimum stirrer speed of 330 rpm observed in the smaller model, what will be
the recommended speed in the industrial unit under the following conditions:
(i) Power per unit volume is kept constant.
(ii) Reynolds number does not change.
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