REACTION ENGINEERING(·´Ó¦¹¤³Ì)

List of Contributors xiii
Preface xv
1. Introduction 1
1.1 Chemical Reaction Engineering 1
1.2 Conversion and Yield of Chemical Reactions 4
1.2.1 Extent of Reaction 4
1.2.2 Conversion 5
1.2.3 Yield and Selectivity 7
1.3 Classifications of Chemical Reactors 10
1.4 Operation Modes of Chemical Reactors 13
1.5 Models in Reactor Design 16
1.6 Scale-Up of Industrial Reactors 19
Further Reading 22
Problems 22

2. Fundamentals of Reaction Kinetics 25
2.1 Reaction Rate 26
2.2 Reaction Rate Equations 30
2.3 Effect of Temperature on Reaction Rate 37
2.4 Multiple Reactions 44
2.4.1 Consumption Rate and Formation Rate 44
2.4.2 Basic Types of Multiple Reactions 45
2.4.3 Reaction Network 50
2.5 Transformation and Integration of Reaction Rate Equations 52
2.5.1 Single Reaction 52
2.5.2 Multiple Reactions 57
2.6 Heterogeneous Catalysis and Adsorption 60
2.6.1 Heterogeneous Catalysis 61
2.6.2 Adsorption and Desorption 62
2.7 Kinetics of Heterogeneous Catalytic Reactions 67
2.7.1 Steady-State Approximation and Rate-Determining Step 68
2.7.2 Rate Equations of Heterogeneous Catalytic Reactions 70
2.8 Determination of Kinetic Parameters 77
2.8.1 Integration Method 77
2.8.2 Differential Method 79
2.9 Procedure for Developing Reaction Rate Equation 86
Further Reading 87
Problems 88

3. Tank Reactor 95
3.1 Mass Balance for Tank Reactor 96
3.2 Design of Isothermal Batch Tank Reactor(Single Reaction) 97
3.2.1 Calculation of Reaction Time and Reaction Volume 98
3.2.2 Optimal Reaction Time 102
3.3 Design of Isothermal Batch Tank Reactor (Multiple Reactions) 103
3.3.1 Parallel Reactions 103
3.3.2 Consecutive Reactions 107
3.4 Reactor Volume for Continuous Tank Reactor (CSTR) 111
3.5 CSTR in Series and Parallel 115
3.5.1 Overview 115
3.5.2 Calculations for Multiple Reactors in Series 117
3.5.3 Optimal Reaction Volume Ratio for CSTR in Series 122
3.6 Yield and Selectivity for Multiple Reactions in a Tank Reactor 123
3.6.1 Overall Yield and Overall Selectivity 124
3.6.2 Parallel Reactions 125
3.6.3 Consecutive Reactions 129
3.7 Semibatch Tank Reactor 133
3.8 Nonisothermal Batch Reactor 138
3.9 Steady-State Operation of CSTR 145
3.9.1 Heat Balance for CSTR 145
3.9.2 Steady-States of CSTR 147
Summary 151
Further Reading 152
Problems 153

4. Tubular Reactor 161
4.1 Plug Flow 161
4.2 Design of Isothermal Tubular Reactor 163
4.2.1 Single Reaction 164
4.2.2 Multiple Reactions 168
4.2.3 Pseudo Homogeneous Model 176
4.3 Comparison of Reactor Volumes of Tubular and Tank Reactors 178
4.4 Recycle Reactor 184
4.5 Nonisothermal Tubular Reactor 185
4.5.1 Heat Balance Equation for Tubular Reactor 186
4.5.2 Adiabatic Tubular Reactor 188
4.5.3 Nonadiabatic Nonisothermal Tubular Reactor 193
4.6 Optimal Temperature Sequence for Tubular Reactors 197
4.6.1 Single Reaction 198
4.6.2 Multiple Reactions 200
Further Reading 203
Problems 203

5. Residence Time Distribution and Flow Models for Reactors 213
5.1 Residence Time Distribution 214
5.1.1 Overview 214
5.1.2 Quantitative Delineation of RTD 215
5.2 Experimental Determination of RTD 218
5.2.1 Pulse Experiments 219
5.2.2 Step Experiments 221
5.3 Statistical Eigenvalues of RTD 224
5.4 RTD of Ideal Reactors 228
5.4.1 Plug-Flow Model 228
5.4.2 Perfectly-Mixed Flow Model 230
5.5 Nonideal Flow Phenomenon 234
5.6 Nonideal Flow Models 238
5.6.1 Segregation Model 238
5.6.2 Tanks-in-Series Model 242
5.6.3 Axial Dispersion Model 247
5.7 Design of Nonideal Reactors 251
5.8 Mixing of Fluids in Flow Reactors 256
Further Reading 260
Problems 261

6. Chemical Reaction and Transport Phenomena in Heterogeneous System 265
6.1 Steps in Heterogeneous Reactions 266
6.1.1 Macroscopic Structures and Properties of Solid Catalyst Particles 266
6.1.2 Steps in a Catalytic Reaction 269
6.2 Heat and Mass Transfer Between Bulk Fluid and the Catalyst External Surface 270
6.2.1 Transport Coefficient 270
6.2.2 Concentration and Temperature Difference Between the External Surface of Catalyst and Bulk Fluid 272
6.2.3 Effect of External Diffusion on Heterogeneous Catalytic Reactions 275
6.3 Gas Diffusion in Porous Media 279
6.3.1 Diffusion in Pores 279
6.3.2 Diffusion in Porous Particles 280
6.4 Diffusion and Reaction in Porous Catalysts 281
6.4.1 Reactant Concentration Profile in Porous Catalysts 282
6.4.2 Internal Effectiveness Factor 285
6.4.3 Internal Effectiveness Factor for Non-first Order Reactions 290
6.4.4 Effectiveness Factor Under the Influences of Both Internal and External Diffusions 292
6.5 Effect of Internal Diffusion on Selectivity of Multiple Reactions 294
6.6 Determination of Diffusion Impact on Heterogeneous Reactions 297
6.6.1 Determination of the Effects of External Diffusion 297
6.6.2 Determining the Effects of Internal Diffusion 299
6.7 Effects of Diffusion on Experimental Measurement of Reaction Rate 301
Further Reading 305
Problems 306