A chemical engineer is generally concerned with the industrial implementation of processes in which chemical or microbiological conversion of material takes place in conjunction with the transfer of mass, heat, and momentum. The characteristics of these processes depend on their scale.
They include heterogeneous chemical reactions and unit operations. Understandably, chemical engineers have always wanted to find ways of simulating these processes to gain insights assising them while designing new industrial plants or trying to optimize existing plants.
Irrespective of whether the model involved represents a "scale-up" or a"scale-down", certain important questions always apply: How small can the model be? Is one model sufficient or should tests be carried out in models of different sizes? When must or when can physical properties differ? When must the measurements be carried out on the model with the original system of materials? Which rules govern the adaptation of the process parameters in the model measurements to those of the full-scale plant? Is it possible to achieve complete similarity between the processes in the model and those in its full-scale counterpart? If not: how should one proceed?
These questions touch on the fundamentals of the theory of models, which are based on dimensional analysis. Although they have been used in the field of fluid dynamics and heat transfer for more than a century - cars, aircrafts, vessels and heat exchangers were scaled up according to these principles - these methods have gained only a modest acceptance in chemical engineering.
This book attempts to fill this gap. It is aimed at students and practicing chemical engineers. It consists of two parts.
The first part presents the principles of dimensional analysis and of scale-up, based on it, in an easily comprehensible and transparent manner. These principles are illustrated by 23 examples concerning well-known operations from the field of chemical engineering.
The second part of the book presents selected examples of treatment of processes in the field of mechanical (11 samples), thermical (6 examples) and chemical (5 examples) process engineering by the dimensional analysis. The last chapter shows that this method can also be favourably applied to the motion processes in the living world (5 examples), leading to a better understanding of them.
"Sinopsis" puede pertenecer a otra edición de este libro.
Covering the important task of the scale-up of processes from the laboratory to the production scale, this easily comprehensible and transparent book is divided into two sections. The first part details the theoretical principles, introducing the subject for readers without a profound prior knowledge of mathematics. It discusses the fundamentals of dimensional analysis, the treatment of temperature-dependent and rheological material values and scale-up where model systems or not available or only partly similar. All this is illustrated by 20 real-world examples, while 25 exercises plus solutions new to this edition practice and monitor learning.
The second part presents the individual basic operations and covers the fields of mechanical, thermal, and chemical process engineering with respect to dimensional analysis and scale-up. The rules for scale-up are given and discussed for each operation. Other additions to this second edition are dimensional analysis of pelleting processes, and a historical overview of dimensional analysis and modeling, while all the chapters have been updated to take the latest literature into account.
Written by a specialist with more than 40 years of experience in the industry, this book is specifically aimed at students as well as practicing engineers, chemists and process engineers already working in the field.
Prof. Dr.-Ing. Marko Zlokarnik studied chemical technology and obtained his Ph.D. in process engineering from RWTH Aachen University and was active in process engineering R & D at Bayer AG, Leverkusen, for 35 years. His work involved reaction apparatus design for chemical production facilities, which, apart from elucidation of reaction kinetics, also brought fundamental work on mixing technology and modelling with it. In the 70s, he developed an especially efficient biological wastewater treatment (Bayer tower biology with flotative removal of activated sludge). From 1970 to 1990, he taught similarity theory at the Technical University of Clausthal-Zellerfeld, then held the Bayer Foundation Chair of Chemical Technology at the University of Cologne. He served as chairman of the VDI-GVC committee on biological process engineering from 1979 to 1988, and in the course of his career has published 60 books, 20 patents, and 5 books, receiving the Otto Bayer Gold Medal and the VDI Honorary Medal for his work.
"Sobre este título" puede pertenecer a otra edición de este libro.
Descripción Wiley-VCH, 2002. Hardcover. Estado de conservación: New. 2. Nº de ref. de la librería DADAX3527302662