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An aqueous solution of organic compound is to be concentrated from a solids content of 8 percent to 45 percent by weight using a single-effect evaporator.

An aqueous solution of organic compound is to be concentrated from a solids content of 8 percent to 45 percent by weight using a single-effect evaporator.

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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An aqueous solution of organic compound is to be concentrated from a solids content of 8 percent to 45 percent by weight using a single-effect evaporator. Saturated steam is introduced at an absolute pressure of 2.03 atm and a vacuum of 658 mmHg is to be maintained in the vapor space of the evaporating chamber. The solution is to be fed at the rate of 20,000 kg/h and a temperature of 21.1°C. If the overall heat transfer coefficient is 2,800 W/m²·°C and the heat capacity of the feed solution is 3.77 J/g·°C, how much steam is needed for every kilogram of organic solution fed? (Assume that the solution has a negligible elevation in boiling point and a negligible heat of dilution

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