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Estimate the partial pressure gradient between the bulk and the film. [AP= 0.027 bar] Estimate the temperature gradient between the bulk and the film. [AT = 10.5 K]

Estimate the partial pressure gradient between the bulk and the film. [AP= 0.027 bar] Estimate the temperature gradient between the bulk and the film. [AT = 10.5 K]

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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Problem 2 In a catalytic fixed bed reactor, the dehydrogenation of ethanol into acetaldehyde is carried out at 275 °C and 1 bar with cylindrical shape catalyst particles (diameter=height=D0.002 m). The area to mass ratio of the catalyst am was 1.26 m2*kg'. C,H,OHg) + CH3CHO) + H2g) (6), (A) (C) (B) The molar feed flow of ethanol was 0.01 kmole*h and the initial catalyst loading is 0.01 kgat: The measured conversion of ethanol was 0.362 and the reaction rate 0.193 kmole*kgcat*h. Estimate the partial pressure gradient between the bulk and the film. [AP = 0.027 bar] Data AH = -70388 kJ*kmole -1*K-1 CPC2H5OH 106.5 kJ*kmole1*K-1 HC2H5OH = 1.32*105 kg/(m*s) CPCH3CHO = 81.2 kJ*kmole1*K-1 HCH3CHO = 1.60*10-5 kg/(m*s) HH2 = 1.32*10-5 kg/(m*s) DAB = 0.2466*10-4 (m2/s) CPH2 = 29.3 kJ*kmole 1*K-1 AC2HSOH = 106.5 kJ*m1*K1s-1 ACH3CHO = 81.2 kl*m1*Kls-1 Estimate the temperature gradient between the bulk and the film. [AT = 10.5 K] DAC = 1.4235*104 (m2/s) AH2 = 29.3 kJ*m-1*K•1s-1 Adapted from: Froment G & Bischoff K, Chemical Reactor Analysis and Design, John Wiley and Sons, 2nd edition, 1990, pp 664
Transcribed Image Text:Problem 2 In a catalytic fixed bed reactor, the dehydrogenation of ethanol into acetaldehyde is carried out at 275 °C and 1 bar with cylindrical shape catalyst particles (diameter=height=D0.002 m). The area to mass ratio of the catalyst am was 1.26 m2*kg'. C,H,OHg) + CH3CHO) + H2g) (6), (A) (C) (B) The molar feed flow of ethanol was 0.01 kmole*h and the initial catalyst loading is 0.01 kgat: The measured conversion of ethanol was 0.362 and the reaction rate 0.193 kmole*kgcat*h. Estimate the partial pressure gradient between the bulk and the film. [AP = 0.027 bar] Data AH = -70388 kJ*kmole -1*K-1 CPC2H5OH 106.5 kJ*kmole1*K-1 HC2H5OH = 1.32*105 kg/(m*s) CPCH3CHO = 81.2 kJ*kmole1*K-1 HCH3CHO = 1.60*10-5 kg/(m*s) HH2 = 1.32*10-5 kg/(m*s) DAB = 0.2466*10-4 (m2/s) CPH2 = 29.3 kJ*kmole 1*K-1 AC2HSOH = 106.5 kJ*m1*K1s-1 ACH3CHO = 81.2 kl*m1*Kls-1 Estimate the temperature gradient between the bulk and the film. [AT = 10.5 K] DAC = 1.4235*104 (m2/s) AH2 = 29.3 kJ*m-1*K•1s-1 Adapted from: Froment G & Bischoff K, Chemical Reactor Analysis and Design, John Wiley and Sons, 2nd edition, 1990, pp 664
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