since it discusses liquid-liquid equilibria and presents generalized iterative techniques for equilibrium calculations. For researchers already immersed in the area and having similar computer programs there is little new in this book beyond what was published previously in the authors’ papers. The material, however, is well organized and neatly packaged. T h e researcher may also find the discussion of computational efficiencies to b e of interest. For the individual who is newly intent on implementing a computational scheme for phase equilibria, this book is an answer to hidher prayers. The selection of recommended methods most surely reflect the prejudices of the authors. If one were to select a group of scholars whose judgements he/she were willing to accede to in the area of phase equilibria, however, he/she would find it difficult to compose a better panel than represented by the auJUDE T. SOMMERFELD thors of this monograph. For the vapor School of Chemical Engineering phase, the virial equation truncated after Georgia Institute of Technology the second virial coefficient, with t h e Atlanta, Georgia 30332 Hayden-O’Connell method for estimating second virial coefficients in polar and associating systems, is used. For the liquid phase, the text discusses calculation of acComputer Calculations for Multicomponent Vopor-Liquid and Liquid-Liquid Equilibria. tivity coefficients by the UNIQUAC model J. M. Prausnitz, T. F. Anderson, E. A. Grens, only. In the computer program listing, C. A. Eckert, R. Hsieh and J. P. OConnell, however, 13 different liquid phase models Prentice-Hall, Englewood Cliffs, New Jersey are included. Unfortunately, no discussion of the bases for selecting one model over ( 1 980), 353 pages, $24.95. the other or of their relative accuracies is This book will be of interest primarily to given. Parameters are tabulated for 92 process design engineers and computer compounds. applications groups who wish to implement There a r e a number of other strong a sophisticated and state-of-the-art com- points in this work. The use of symmetric or puter program for the solution of vapor- unsymmetric conventions for the liquid liquid and liquid-liquid equilibrium calcu- phase activity coefficients and the use of lations. The methods presented restrict activity coefficients corrected to a constant application to nonelectrolytes at low-to- reference pressure are clearly presented. moderate pressures remote from the criti- The application of the calculation procecal region. dure to liquid-liquid systems is thoroughly The type of presentation given in this discussed emphasizing the need for exbook is quite similar to that in the two perimental mixture data in order to obtain earlier books by Prausnitz and co-workers reliable fitting parameters. The recom(Computer Calculations for Multicompo- mended method of parameter estimation is nent Vapor-Liquid Equilibria, Prausnitz, discussed and given in a computer proEckert, Orye and O’Connell, 1967 and gram. Computer Calculations for High Pressure In summary, this is an excellent, up-toVapor-Liquid Equilibria, Prausnitz and d a t e p r e s e n t a t i o n of t h e U N I Q U A C Cheuh, 1968). T h e methods are ther- method of calculating vapor-liquid and modynamic and are presented in a succinct liquid-liquid equilibria. It will remain of but clear fashion in the first chapters, with primary importance to workers in these the major portion of the book being taken areas until further research renders it obsoup by tables of parameters and detailed lete. This obsolescence is quite likely to listings of the FORTRAN computer pro- result from the efforts of the authors themgrams. The present book is intended to selves. stand alone and is not an addendum to the RONALD P. DANNER 1967 monograph; rather, as the authors Chemical Engineering Department say, the previous book is “out-of-date” and The Pennsylvania State University the new monograph is a “major extension” University Park, PA 16802 and gases in Chapter 9. There is also an excellent coverage of heat exchanger design in Chapter 15, including heat exchanger simulation using the concepts of heat exchanger effectiveness and number of transfer units. The last chapter (22), together with the related Appendix B, has a very thorough coverage of particulate solids flow and separation. It is also heartening to see more than cursory mention of the unit operations of adsorption and ion exchange in Chapter 16. This text is large, heavy and reasonably expensive ($31.95). Upon learning of the price, one of my colleagues (name withheld) observed that, on a per pound basis, the cost of this book is comparable to that of good bacon. In sum, this text should prove to be a more than adequate treatise on chemical engineering unit operations, particularly to those educators and readers of similar pedagogical persuasion. AlChE Journol (Vol. 27, No. 1) January, 1981 Page 173
Crowded conditions in the Chemistry Building did not permit the development of a laboratory in unit operations or pilot processing equipment. In 1917 the Swenson Evaporator Company, of Chicago, offered to install at the University certain valuable equipment of this type free of cost if the company in exchange might employ the services of Professor Badger as a research consultant. This offer was accepted by the Board of Regents, and space was found in the abandoned Boiler House in the center of the campus for this equipment. In spite of a discouraging environment good work was done.
principles of unit operations 2nd ed foust
Shortly after The Principles of Chemical Engineering was published, Badger and Baker developed a text, Inorganic Chemical Technology, which partly bridged the gap between the descriptive work and the quantitative viewpoint. In 1931 Badger and McCabe brought out Elements of Chemical Engineering, which soon became the most widely used text in this field. Minor revisions of the curriculum increased the emphasis on unit operations at this time. 2ff7e9595c
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