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Köp båda 2 för 2833 krThis book provides guidelines for obtaining research and development (RD) results of a consistent and known quality. The approaches discussed here have been developed for an industrial research center engaged in RD to support operating divisions o...
This is Volume XXII of twenty-two in a collection on 20th Century Philosophy. Originally published in 1979, this volume attempts to assess some of the achievements of Bertrand Russell in philosophy, logic and mathematics, ethics and politics.
George W. Roberts is Professor of Chemical Engineering at North Carolina State University. He has also spent over 20 years in research and development with several industrial organizations in the Philadelphia area.
1. Reactions and Reaction Rates 1 1.1 Introduction 1 1.1.1 The Role of Chemical Reactions 1 1.1.2 Chemical Kinetics 2 1.1.3 Chemical Reactors 2 1.2 Stoichiometric Notation 3 1.3 Extent of Reaction and the Law of Definite Proportions 4 1.3.1 Stoichiometric NotationMultiple Reactions 6 1.4 Definitions of Reaction Rate 8 1.4.1 Species-Dependent Definition 8 1.4.1.1 Single Fluid Phase 9 1.4.1.2 Multiple Phases 9 Heterogeneous Catalysis 9 Other Cases 10 1.4.1.3 Relationship between Reaction Rates of Various Species (Single Reaction) 10 1.4.1.4 Multiple Reactions 11 1.4.2 Species-Independent Definition 11 Summary of Important Concepts 12 Problems 12 2. Reaction RatesSome Generalizations 16 2.1 Rate Equations 16 2.2 Five Generalizations 17 2.3 An Important Exception 33 Summary of Important Concepts 33 Problems 33 3. Ideal Reactors 36 3.1 Generalized Material Balance 36 3.2 Ideal Batch Reactor 38 3.3 Continuous Reactors 43 3.3.1 Ideal Continuous Stirred-Tank Reactor (CSTR) 45 3.3.2 Ideal Continuous Plug-Flow Reactor (PFR) 49 3.3.2.1 The Easy WayChoose a Different Control Volume 51 3.3.2.2 The Hard WayDo the Triple Integration 54 3.4 Graphical Interpretation of the Design Equations 54 Summary of Important Concepts 57 Problems 57 Appendix 3 Summary of Design Equations 60 4. Sizing and Analysis of Ideal Reactors 63 4.1 Homogeneous Reactions 63 4.1.1 Batch Reactors 63 4.1.1.1 Jumping Right In 63 4.1.1.2 General Discussion: Constant-Volume Systems 68 Describing the Progress of a Reaction 68 Solving the Design Equation 71 4.1.1.3 General Discussion: Variable-Volume Systems 74 4.1.2 Continuous Reactors 77 4.1.2.1 Continuous Stirred-Tank Reactors (CSTRs) 78 Constant-Density Systems 78 Variable-Density (Variable-Volume) Systems 80 4.1.2.2 Plug-Flow Reactors 82 Constant-Density (Constant-Volume) Systems 82 Variable-Density (Variable-Volume) Systems 84 4.1.2.3 Graphical Solution of the CSTR Design Equation 86 4.1.2.4 Biochemical Engineering Nomenclature 90 4.2 Heterogeneous Catalytic Reactions (Introduction to Transport Effects) 91 4.3 Systems of Continuous Reactors 97 4.3.1 Reactors in Series 98 4.3.1.1 CSTRs in Series 98 4.3.1.2 PFRs in Series 103 4.3.1.3 PFRs and CSTRs in Series 103 4.3.2 Reactors in Parallel 107 4.3.2.1 CSTRs in Parallel 107 4.3.2.2 PFRs in Parallel 109 4.3.3 Generalizations 110 4.4 Recycle 111 Summary of Important Concepts 114 Problems 114 Appendix 4 Solution to Example 4-10: Three Equal-Volume CSTRs in Series 122 5. Reaction Rate Fundamentals (Chemical Kinetics) 123 5.1 Elementary Reactions 123 5.1.1 Significance 123 5.1.2 Definition 125 5.1.3 Screening Criteria 126 5.2 Sequences of Elementary Reactions 129 5.2.1 Open Sequences 130 5.2.2 Closed Sequences 130 5.3 The Steady-State Approximation (SSA) 131 5.4 Use of the Steady-State Approximation 133 5.4.1 Kinetics and Mechanism 136 5.4.2 The Long-Chain Approximation 137 5.5 Closed Sequences with a Catalyst 138 5.6 The Rate-Limiting Step (RLS) Approximation 140 5.6.1 Vector Representation 141 5.6.2 Use of the RLS Approximation 142 5.6.3 Physical Interpretation of the Rate Equation 143 5.6.4 Irreversibility 145 5.7 Closing Comments 147 Summary of Important Concepts 147 Problems 148 6. Analysis and Correlation of Kinetic Data 154 6.1 Experimental Data from Ideal Reactors 154 6.1.1 Stirred-Tank Reactors (CSTRs) 155 6.1.2 Plug-Flow Reactors 156 6.1.2.1 Differential Plug-Flow Reactors 156 6.1.2.2 Integral Plug-Flow Reactors 157 6.1.3 Batch Reactors 158 6.1.4 Differentiation of Data: An Illustration 159 6.2 The Differential Method of Data Analysis 162 6.2.1 Rate Equations Containing Only One Concentration 162 6.2.1.1 Testing a Rate Equation 162 6.2.1.2 Linearization of LangmuirHinshelwood/MichaelisMenten Rate Equations 165 6.2.2 Rate Equations Containing More Than O