Principles of Chemical Reactor Analysis and Design: New Tools for Industrial Chemical Reactor Operations / Edition 2

by Uzi Mann

Overview

An innovative approach that helps students move from the classroom to professional practice

This text offers a comprehensive, unified methodology to analyze and design chemical reactors, using a reaction-based design formulation rather than the common species-based design formulation. The book's acclaimed approach addresses the weaknesses of current pedagogy by giving readers the knowledge and tools needed to address the technical challenges they will face in practice.

Principles of Chemical Reactor Analysis and Design prepares readers to design and operate real chemical reactors and to troubleshoot any technical problems that may arise. The text's unified methodology is applicable to both single and multiple chemical reactions, to all reactor configurations, and to all forms of rate expression. This text also . . .

• Describes reactor operations in terms of dimensionless design equations, generating dimensionless operating curves that depict the progress of individual chemical reactions, the composition of species, and the temperature.
• Combines all parameters that affect heat transfer into a single dimensionless number that can be estimated a priori.

• Accounts for all variations in the heat capacity of the reacting fluid.

• Develops a complete framework for economic-based optimization of reactor operations.

Problems at the end of each chapter are categorized by their level of difficulty from one to four, giving readers the opportunity to test and develop their skills.

Graduate and advanced undergraduate chemical engineering students will find that this text's unified approach better prepares them for professional practice by teaching them the actual skills needed to design and analyze chemical reactors.

Product Details

ISBN-13:	9780471261803
Publisher:	Wiley
Publication date:	04/13/2009
Edition description:	2nd ed.
Pages:	496
Product dimensions:	7.10(w) x 10.00(h) x 1.20(d)

About the Author

UZI MANN, PHD, is a Professor of Chemical Engineering at Texas Tech University. Dr. Mann is a recipient of the Lockheed Martin Teaching Award and the Halliburton Excellence in Research Award. He also teaches the ASME/AIChE short course "Principles and Practices of Chemical Reactor Design and Operations."

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Table of Contents

Preface xi

Notation xv

1 Overview of Chemical Reaction Engineering 1

1.1 Classification of Chemical Reactions 2

1.2 Classification of Chemical Reactors 3

1.3 Phenomena and Concepts 8

1.3.1 Stoichiometry 8

1.3.2 Chemical Kinetics 9

1.3.3 Transport Effects 9

1.3.4 Global Rate Expression 14

1.3.5 Species Balance Equation and Reactor Design Equation 14

1.3.6 Energy Balance Equation 15

1.3.7 Momentum Balance Equation 15

1.4 Common Practices 15

1.4.1 Experimental Reactors 16

1.4.2 Selection of Reactor Configuration 16

1.4.3 Selection of Operating Conditions 18

1.4.4 Operational Considerations 18

1.4.5 Scaleup 19

1.4.6 Diagnostic Methods 20

1.5 Industrial Reactors 20

1.6 Summary 21

References 22

2 Stoichiometry 25

2.1 Four Contexts of Chemical Reaction 25

2.2 Chemical Formulas and Stoichiometric Coefficients 26

2.3 Extent of a Chemical Reaction 28

2.4 Independent and Dependent Chemical Reactions 39

2.5 Characterization of the Reactor Feed 47

2.5.1 Limiting Reactant 48

2.5.2 Excess Reactant 49

2.6 Characterization of Reactor Performance 54

2.6.1 Reactant Conversion 54

2.6.2 Product Yield and Selectivity 58

2.7 Dimensionless Extents 64

2.8 Independent Species Composition Specifications 68

2.9 Summary 72

Problems 72

Bibliography 79

3 Chemical Kinetics 81

3.1 Species Formation Rates 81

3.2 Rates of Chemical Reactions 82

3.3 Rate Expressions of Chemical Reactions 86

3.4 Effects of Transport Phenomena 91

3.5 Characteristic Reaction Time 91

3.6 Summary 97

Problems 97

Bibliography 99

4 Species Balances and Design Equations 101

4.1 Macroscopic Species Balances—General Species-Based Design Equations 102

4.2 Species-Based Design Equations of Ideal Reactors 104

4.2.1 Ideal Batch Reactor 104

4.2.2 Continuous Stirred-Tank Reactor (CSTR) 105

4.2.3 Plug-Flow Reactor (PFR) 106

4.3 Reaction-Based Design Equations 107

4.3.1 Ideal Batch Reactor 107

4.3.2 Plug-Flow Reactor 109

4.3.3 Continuous Stirred-Tank Reactor (CSTR) 111

4.3.4 Formulation Procedure 112

4.4 Dimensionless Design Equations and Operating Curves 113

4.5 Summary 125

Problems 126

Bibliography 129

5 Energy Balances 131

5.1 Review of Thermodynamic Relations 131

5.1.1 Heat of Reaction 131

5.1.2 Effect of Temperature on Reaction Equilibrium Constant 134

5.2 Energy Balances 135

5.2.1 Batch Reactors 136

5.2.2 Flow Reactors 147

5.3 Summary 156

Problems 157

Bibliography 158

6 Ideal Batch Reactor 159

6.1 Design Equations and Auxiliary Relations 160

6.2 Isothermal Operations with Single Reactions 166

6.2.1 Constant-Volume Reactors 167

6.2.2 Gaseous Variable-Volume Batch Reactors 181

6.2.3 Determination of the Reaction Rate Expression 189

6.3 Isothermal Operations with Multiple Reactions 198

6.4 Nonisothermal Operations 216

6.5 Summary 230

Problems 231

Bibliography 238

7 Plug-Flow Reactor 239

7.1 Design Equations and Auxiliary Relations 240

7.2 Isothermal Operations with Single Reactions 245

7.2.1 Design 246

7.2.2 Determination of Reaction Rate Expression 261

7.3 Isothermal Operations with Multiple Reactions 265

7.4 Nonisothermal Operations 281

7.5 Effects of Pressure Drop 296

7.6 Summary 308

Problems 309

8 Continuous Stirred-Tank Reactor 317

8.1 Design Equations and Auxiliary Relations 318

8.2 Isothermal Operations with Single Reactions 322

8.2.1 Design of a Single CSTR 324

8.2.2 Determination of the Reaction Rate Expression 333

8.2.3 Cascade of CSTRs Connected in Series 336

8.3 Isothermal Operations with Multiple Reactions 341

8.4 Nonisothermal Operations 358

8.5 Summary 370

Problems 370

9 Other Reactor Configurations 377

9.1 Semibatch Reactors 377

9.2 Plug-Flow Reactor with Distributed Feed 400

9.3 Distillation Reactor 416

9.4 Recycle Reactor 425

9.5 Summary 435

Problems 435

10 Economic-Based Optimization 441

10.1 Economic-Based Performance Objective Functions 442

10.2 Batch and Semibatch Reactors 448

10.3 Flow Reactors 450

10.4 Summary 453

Problems 453

Bibliography 454

Appendix A Summary of Key Relationships 455

Appendix B Microscopic Species Balances—Species Continuity Equations 465

Appendix C Summary of Numerical Differentiation and Integration 469

Index 471