Chemical reaction engineering, CRE

The field of chemical reaction engineering (CRE) is intimately and uniquely connected with the design and scale-up of chemical reacting systems. To achieve the latter, two essential elements must be combined. First, a detailed knowledge of the possible chemical transformations that can occur in the system is required. This information is represented in the form of chemical kinetic schemes, kinetic rate parameters, and thermodynamic databases. In recent years, considerable progress has been made in this area using computational chemistry and carefully... 

In this introductory chapter, we first consider what chemical kinetics and chemical reaction engineering (CRE) are about, and how they are interrelated. We then introduce some important aspects of kinetics and CRE, including the involvement of chemical stoichiometry, thermodynamics and equilibrium, and various other rate processes. Since the rate of reaction is of primary importance, we must pay attention to how it is defined, measured, and represented, and to the parameters that affect it. We also introduce some of the main considerations in reactor design, and parameters affecting reactor performance. These considerations lead to a plan of treatment for the following chapters. 

Chemical reaction engineering (CRE) is concerned with the rational design and/or analysis of performance of chemical reactors. What is a chemical reactor, and what does its rational design involve A chemical reactor is a device in which change in com-... 

In this chapter, we return to the main theme of this book, chemical reaction engineering (CRE). We amplify some of the general considerations introduced in Chapter 1, before the detailed consideration of quantitative design methods in Chapter 12 and subsequent chapters. 

Chemical reaction coefficient, 25 281,283, 290 combinations of, 25 293t effect on critical value of mass transfer Peclet number, 25 284t Chemical reaction engineering (CRE), 22 330... 

Important applications of chemical reaction engineering (CRE) of all kinds can be found both inside and outside the chemical process industries (CPI). In this text, examples from the chemical process industries include the manufacture of ethylene oxide, phthaiic anhydride, ethylene glycol, metexylene, styrene, sul fur trioxide, propylene glycol, ketene, and i-fautane just to name a few. Also, plant safety in the CPI is addressed in both example problems and homework problems. These are real industrial reactions with aaua data and reaction rate law parameters. 

Chemical reaction engineering (CRE) emerged as a methodology that quantifies the interplay between transport phenomena and kinetics on a variety of scales and allows formulation of quantitative models for various measures of reactor performance [3]. The ability to establish such quantitative links between measures of reactor performance and input and operational variables is essential in optimizing the operating conditions in manufacturing, for proper reactor design and scale-up, and in correct interpretation of data in research and pilot plant work. 

Chemical reaction engineering (CRE) is the branch of engineering that encompasses the selection, design, and operation of chemical reactors. Because of the diversity of chemical reactor apphcations, the wide spectnim of operating conditions, and the multitude of factors that affect reactor operations, CRE encompasses many diverse concepts, principles, and methods that cannot be covered adequately in a single volume. This chapter provides a brief overview of the phenomena encountered in the operation of chemical reactors and of the concepts and methods used to describe them. 

Given their complexity and practical importance, it should be no surprise that different approaches for dealing with turbulent reacting flows have developed over the last 50 years. On the one hand, the chemical-reaction-engineering (CRE) approach came from the application of chemical kinetics to the study of chemical reactor design. In this approach, the details of the fluid flow are of interest only in as much as they affect the product yield and selectivity of the reactor. In many cases, this effect is of secondary importance, and thus in the CRE approach greater attention has been paid to other factors that directly affect the chemistry. On the other hand, the fluid-mechanical (FM) approach developed as a natural extension of the statistical description of turbulent flows. In this approach, the emphasis has been primarily on how the fluid flow affects the rate of chemical reactions. In particular, this approach has been widely employed in the study of combustion (Rosner 1986 Peters 2000 Poinsot and Veynante 2001 Veynante and Vervisch 2002). 

AspenTech is a process flow sheet simulator used in many senior chemical engineering design courses. It is now routinely introduced in earlier chemical engineering courses, such as thermodynamics, separations, and now in chemical reaction engineering (CRE). Like Polymath. AspenTech site licenses are available in most chemical engineering departments in the United States. Four AspenTech simulation examples specific to CRE are provided on the DVD-ROM with step-by-slep tutorial screen shots. 

The second goal of this book is to enable the reader to develop a clear understanding of the fundamentals of chemical reaction engineering (CRE). This... 

---