Unit Operations Of Chemical Engineering
7th Edition
ISBN: 9789339213237
Author: MCCABE, WARREN
Publisher: Tata McGraw-Hill Education India
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Chapter 7, Problem 7.5P
Interpretation Introduction
Interpretation:
The average particle size and surface area per unit mass of solid are to be determined for a packed bed.
Concept Introduction:
Pressure drop in a packed bed during laminar flow depends on superficial velocity, particle diameter and void fraction. However, this assumption works only when the Reynolds number is less than unity. The surface area to volume ratio of non-spherical particles is inversely proportional to the particle diameter and sphericity. Finally, volume of particles is defined as the ratio of mass to density of the particles.
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Only solve the specific enthalpies. Be thorough to the fullest for each calculation
Do question 9 please! Question 7 Is just there for reference!!
7) You are tasked with separating two proteins by ion exchange chromatography on a 30 cm long
column with an inner diameter of 2 cm. The resin has a diameter of 100 μm and a void fraction
of 0.3, and your mobile phase flows through the column at a rate of Q = 5 cm³/min. The Van
Deemter coefficients A, B, and C have been determined to be 0.0228 cm, 0.0036 cm²/min, and
0.00053 min, respectively, for both proteins. Protein A elutes from the column with an average
retention time of 27 min and standard deviation of 0.8 min. Protein B elutes from the column.
with an average retention time of 33.8 min and standard deviation of 1.0.
a) How many theoretical plates does the column contain?
b) What flow rate (Q) will give you the maximum resolution?
c) What is the minimum height of a theoretical plate for the system?
Chapter 7 Solutions
Unit Operations Of Chemical Engineering
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