EDITORIAL
INDUSTRIAL AND ENGINEERING CHEMISTRY Editor, D A V I D E. G U S H E E Editorial Headouarters 1155 Sixteenth St., N.W., Washington, D. C. 20036 Phone 202-737-3337 Teletype WA 2 3 ~
Assistant Editors: Elspeth Mainland, Joseph H. S. Haggin, John A. King Manager, Research Results Service: Stella Anderson Layout and Production Joseph Jacobs, Art Director, Leroy Corcoran, Assistant Art Director Bill Caldwell (Layout)
Essential Coexistence
Production-Easton, Pa. Associate Editor: Charlotte C. Sayre Editorial Assistant: J a n e M . Aridrews
he Chem Show (30th Exposition of Chemical Industries, opening
International Editorial Bureaus Frankfurt/Main, West Germany Grosse Bockenheimerstrasse 32 H. Clifford Neely London, W.C.2, England 27 J o h n A d a m St. Dermot A. O'Sullivan Tokyo Japan A t 3b6 47 Dai-machi Agisaka,) Minato-ku Patrick P. McCurdy A D V I S O R Y B O A R D Thomas Baron, R . B. Beckm a n n C. 0 . Bennett E. G. Bohalek, F. G. Ciapetta, J. J. 'Fischer Brage' Golding, John Happel, E. F. Johnson, A. Jonke, F. C. McGrew, A. R . Rescorla, Arthur Rose, B. H. Sage, Joseph Stewart, T. J. Williams
A.
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TNovember 30 in New York) has achieved a position of significance in the practical education of chemical engineers. Here in one place are the equipment lines of most of the major hardware suppliers to the chemical process industries. The affair is one of the best vehicles available for exposing engineers not only to the continual changes in equipment but also to those aspects of it that do not change. However, chemical process equipment is only a small part of chemical engineering and probably represents the most stable aspect of the profession. Changes in t h e equipment itself, impressive and pertinent as they may be, are less drastic in concept than are advances in engineers' understanding of what goes on inside. For this reason, we have chosen to capitalize on the occasion of the Chem Show to draw together the changes in equipment (from the exhibitors) and the changes in our understanding of its use (from the Unit Operations Annual Reviews). As Marchello and Beckmann point out (page 56), chemical engineers have always sought the common elements in varying situations so that they could apply the common know-how to new situations. This trait gave rise to the Unit Operations originally, and it provided the basis for standardized types of equipment which could be put together in different sequences to produce different products. Chemical engineering scientists are doing the same thing now: seeking a more fundamental group of analogies to provide the foundation for a more productive organization of engineering experience. Although this new foundation is not yet laid, its outlines are gradually emerging from the extensive work at the frontiers of transport phenomena, irreversible thermodynamics, and molecular and particulate architecture. At the other end of the spectrum, as evidenced for example in Tom Waugh's description of process and product development in a small company (page 62), is the pressure to modify the chemical and physicochemical systems so that current engineering know-how will suffice. Throughout the Annual Reviews of the Unit Operations, these two poles of thought and activity thread their way uneasily together. But this is the central requirement of chemical engineering-that probing for deeper understanding and working with what is already available coexist with mutual respect and interchange-that we get things done, as befits the function of engineers, but that we always keep our eyes on the stars.
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VOL. 57
NO. 1 1
NOVEMBER 1 9 6 5
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