CaCO3 filter cake in a tray is to be dried by cross-circulation from the top surface. Each tray is 2.5 cm high, with an area of 1.5 m2 , and is filled with 73 kg of wet filter cake having a water content of 30% on the dry basis. The heating medium is air at 1 atm and 170oF with a relative humidity of 10%. The velocity of air passing across the wet solid is 4 m/s. Estimate time in hours needed to reach the experimentally determined, critical moisture content (end of the constant-rate period) of 10% on the dry basis, if the preheat period is neglected.
CaCO3 filter cake in a tray is to be dried by cross-circulation from the top surface. Each tray is 2.5 cm high, with an area of 1.5 m2 , and is filled with 73 kg of wet filter cake having a water content of 30% on the dry basis. The heating medium is air at 1 atm and 170oF with a relative humidity of 10%. The velocity of air passing across the wet solid is 4 m/s. Estimate time in hours needed to reach the experimentally determined, critical moisture content (end of the constant-rate period) of 10% on the dry basis, if the preheat period is neglected.
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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CaCO3 filter cake in a tray is to be dried by cross-circulation from the top surface. Each tray is 2.5 cm high, with an area of 1.5 m2 , and is filled with 73 kg of wet filter cake having a water content of 30% on the dry basis. The heating medium is air at 1 atm and 170oF with a relative humidity of 10%. The velocity of air passing across the wet solid is 4 m/s. Estimate time in hours needed to reach the experimentally determined, critical moisture content (end of the constant-rate period) of 10% on the dry basis, if the preheat period is neglected.
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