Ammonium sulfate is dried from 4 to 0.2% moisture in a counter current rotary drier. Hot air at 363K containing 0.01 Kg of water per kg of dry air admitted at one end of the drier flows counter currently in contact with the solids and leaves at the other end at 305K. The solid enters at 298K and leaves at 333K. The heat lost from the drier is estimated to be at the rate of 40,000 KJ/h. The heat capacity of the dry air is 1.005 KJ/kg K. The heat capacity of the water vapor is 1.884 KJ/kg K. The heat capacity of the dry aluminum sulfate is 1.507 KJ/kg K. The heat capacity of the water is 4.2 KJ/kg K. The lateent heat of vaporization of water at 273K is 2502.3 KJ/kg. Estimate the air requirement for the drier for producing ammonum sulfate product at the rate of 6131 kg/h.
Ammonium sulfate is dried from 4 to 0.2% moisture in a counter current rotary drier. Hot air at 363K containing 0.01 Kg of water per kg of dry air admitted at one end of the drier flows counter currently in contact with the solids and leaves at the other end at 305K. The solid enters at 298K and leaves at 333K. The heat lost from the drier is estimated to be at the rate of 40,000 KJ/h. The heat capacity of the dry air is 1.005 KJ/kg K. The heat capacity of the water vapor is 1.884 KJ/kg K. The heat capacity of the dry aluminum sulfate is 1.507 KJ/kg K. The heat capacity of the water is 4.2 KJ/kg K. The lateent heat of vaporization of water at 273K is 2502.3 KJ/kg. Estimate the air requirement for the drier for producing ammonum sulfate product at the rate of 6131 kg/h.
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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Ammonium sulfate is dried from 4 to 0.2% moisture in a counter current rotary drier. Hot air at 363K containing 0.01 Kg of water per kg of dry air admitted at one end of the drier flows counter currently in contact with the solids and leaves at the other end at 305K. The solid enters at 298K and leaves at 333K. The heat lost from the drier is estimated to be at the rate of 40,000 KJ/h. The heat capacity of the dry air is 1.005 KJ/kg K. The heat capacity of the water vapor is 1.884 KJ/kg K. The heat capacity of the dry aluminum sulfate is 1.507 KJ/kg K. The heat capacity of the water is 4.2 KJ/kg K. The lateent heat of vaporization of water at 273K is 2502.3 KJ/kg. Estimate the air requirement for the drier for producing ammonum sulfate product at the rate of 6131 kg/h.
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