First printing, July 2011Ĭontents Preface Acknowledgments About the Author Nomenclature Chapter 1 Introduction to Separation Process Engineering 1.1. ISBN 13: 978-0-13-138227-5 ISBN 10: 0-13-138227-6 Text printed in the United States on recycled paper at Courier in Westford, Massachusetts. To obtain permission to use material from this work, please submit a written request to Pearson Education, Inc., Permissions Department, One Lake Street, Upper Saddle River, New Jersey 07458, or you may fax your request to (201) 236-3290. This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For more information, please contact: United States Corporate and Government Sales (800) 382-3419 For sales outside the United States, please contact: International Sales Visit us on the Web: /ph Library of Congress Cataloging-in-Publication Data Wankat, Phillip C., 1944– Separation process engineering : includes mass transfer analysis / Phillip C. The publisher offers excellent discounts on this book when ordered in quantity for bulk purchases or special sales, which may include electronic versions and/or custom covers and content particular to your business, training goals, marketing focus, and branding interests. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein. The author and publisher have taken care in the preparation of this book, but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. Where those designations appear in this book, and the publisher was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks.
Alternatively, the compressibility factor for specific gases can be read from generalized compressibility charts that plot as a function of pressure at constant temperature.Separation Process Engineering Includes Mass Transfer Analysis Third Edition Phillip C. For a gas that is a mixture of two or more pure gases, the gas composition must be known before compressibility can be calculated. Compressibility factor values are usually obtained by calculation from equations of state (EOS), such as the virial equation which take compound-specific empirical constants as input. In general, deviation from ideal behaviour becomes more significant the closer a gas is to a phase change, the lower the temperature or the larger the pressure. It is a useful thermodynamic property for modifying the ideal gas law to account for the real gas behaviour. It is simply defined as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure. In thermodynamics, the compressibility factor ( Z), also known as the compression factor or the gas deviation factor, is a correction factor which describes the deviation of a real gas from ideal gas behaviour. Read this K-value off the chart (approximately 21.3). Note where the line crosses the methane axis.Connect the points with a straight line.On the right-hand vertical axis, locate and mark the point containing the temperature 60☏.On the left-hand vertical axis, locate and mark the point containing the pressure 100 psia.Exampleįor example, to find the K value of methane at 100 psia and 60 ☏. Many DePriester charts have been printed for simple hydrocarbons. "K" values, representing the tendency of a given chemical species to partition itself preferentially between liquid and vapor phases, are plotted in between. These nomograms have two vertical coordinates, one for pressure, and another for temperature. DePriester in an article in Chemical Engineering Progress in 1953. ( December 2018)ĭePriester Charts provide an efficient method to find the vapor-liquid equilibrium ratios for different substances at different conditions of pressure and temperature. Please introduce links to this page from related articles try the Find link tool for suggestions. This article is an orphan, as no other articles link to it.
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