A liquid mixture containing 50 mole % each of benzene and toluene at 40 degreesCelsius is to be continuously flash vaporized to vaporize 60 mole % of the feed.The residual liquid product contains 35 mole % benzene. If the enthalpies permole of feed, the liquid product and the vapor product are respectively 2,5 and 30kJ/mole,Calculate the heat added in kJ per mole of vapor product

Flash vaporization is a process in which a liquid mixture is rapidly vaporized by decreasing its…

Answered: A liquid mixture containing 50 mole %…

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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A single effect evaporator was used to concentrate 8000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the Evaporator at 20 ° C. The evaporator is operated on Steam (85% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it (a) Steam demand rate = Answerkg / hour. b. Steam economy when condensate temperature is released at 75 ° C. = Answer(kg of water evaporated / kg of steam)
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