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Q22. Falling-film crystallizer Feed to the top of a falling-film crystallizer is a melt of 60 wr% naphthalene and 40 wt% benzene at saturation conditions. The tube has an inner diameter of 10 cm. (1) If the coolant enters the top at 10 C, detemine the time required for the crystal-layer thickness to reach 2 cm at the top. (2) IL the same process is about to take place in a planar wall crystallizer with surface spacing of 10 cm, what will be the time required? Necessary physical-properties are given below: Density of naphthalene-1140 kg m; thermal conductivity of naphthalene -0.29 W m K and AH - 148.53 kJ kg. Naphthalene-Benzene phase diagram is shown in Figure I below. Homework- CHNG38O5/9305 AY2022-Sem! 60 50 40 Homogeneous solution Solid CM, + solution 30 20 Solid CH + solution 10 Mixture of solid CH, and solid CigH -10 10 20 30 40 50 60 70 80 90 100 Weight, % CioH, in solution Figure 1. Solid-liquid phase diagram of Naphthalene-Benzene binary. Temperature, "c

Q22. Falling-film crystallizer Feed to the top of a falling-film crystallizer is a melt of 60 wr% naphthalene and 40 wt% benzene at saturation conditions. The tube has an inner diameter of 10 cm. (1) If the coolant enters the top at 10 C, detemine the time required for the crystal-layer thickness to reach 2 cm at the top. (2) IL the same process is about to take place in a planar wall crystallizer with surface spacing of 10 cm, what will be the time required? Necessary physical-properties are given below: Density of naphthalene-1140 kg m; thermal conductivity of naphthalene -0.29 W m K and AH - 148.53 kJ kg. Naphthalene-Benzene phase diagram is shown in Figure I below. Homework- CHNG38O5/9305 AY2022-Sem! 60 50 40 Homogeneous solution Solid CM, + solution 30 20 Solid CH + solution 10 Mixture of solid CH, and solid CigH -10 10 20 30 40 50 60 70 80 90 100 Weight, % CioH, in solution Figure 1. Solid-liquid phase diagram of Naphthalene-Benzene binary. Temperature, "c

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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Q22. Falling-film crystallizer Feed to the top of a falling-film crystallizer is a melt of 60 wt% naphthalene and 40 wt% benzene at saturation conditions, The tube has an inner diameter of 10 cm. (1) If the coolant enters the top at 10 C, detemine the time required for the crystal-layer thickness to (2) If the same process is about to take place in a planar wall crystallizer with surface spacing of 10 em, what will be the time required? Necessary physical-properties are given below: Density of naphthalene =1140 kg m3; thermal conductivity of naphthalene = 0.29 W m" K and AHr = 148.53 kJ kg ". Naphthalene-Benzene phase diagram is shown in Figure I below. Homework- CHNG3805/9305 AY2022-Semi 60 50- 40 Homogeneous solution Solid CH, + solution 30 20 Solid CH. + solution 10 아 Mixture of solid C,H, and solid CioH -10 10 20 30 40 50 60 70 80 90 100 Weight, % CoH, in solution Figure I. Solid-liquid phase diagram of Naphthalene-Benzene binary. Temperature, "C
Transcribed Image Text:Q22. Falling-film crystallizer Feed to the top of a falling-film crystallizer is a melt of 60 wt% naphthalene and 40 wt% benzene at saturation conditions, The tube has an inner diameter of 10 cm. (1) If the coolant enters the top at 10 C, detemine the time required for the crystal-layer thickness to (2) If the same process is about to take place in a planar wall crystallizer with surface spacing of 10 em, what will be the time required? Necessary physical-properties are given below: Density of naphthalene =1140 kg m3; thermal conductivity of naphthalene = 0.29 W m" K and AHr = 148.53 kJ kg ". Naphthalene-Benzene phase diagram is shown in Figure I below. Homework- CHNG3805/9305 AY2022-Semi 60 50- 40 Homogeneous solution Solid CH, + solution 30 20 Solid CH. + solution 10 아 Mixture of solid C,H, and solid CioH -10 10 20 30 40 50 60 70 80 90 100 Weight, % CoH, in solution Figure I. Solid-liquid phase diagram of Naphthalene-Benzene binary. Temperature, "C
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