Plantwide control: recent developments and applications

INDICE: Preface Section I: Overview and Perspective 1 Introduction 1.1 Background 1 1.2 Plant-Wide Control 2 1.3 Scope and Organization of the Book 4 References 10 2 Industrial Perspective on Plant-Wide Control 2.1 Introduction 1 2.2 Design Environment 3 2.3 Disturbances and Measurement System Design 6 2.4 Academic Contributions 8 2.5 Conclusions 11 References 12 Section II: Tools andHeuristics 3 Control Degrees of Freedom Analysis for Plant-Wide Control of Industrial Processes 3.1 Introduction 2 3.2 Control Degrees of Freedom (CDOF) 4 3.3 Computation Methods for Control Degrees of Freedom (CDOF): A Review 7 3.4 Computation of CDOF Using Flowsheet-Oriented Method 14 3.4.1 Computation of Restraining Number for Unit Operations 16 3.5 Application of Flowsheet-Oriented Method to Distillation Columns and the Concept of Redundant Process Variables 19 3.6 Application of Flowsheet-Oriented Method to Compute CDOF to Complex Integrated Processes 22 3.7 Conclusions 23 References 24 4 Selection of Controlled Variables Using Self-Optimizing Control Method 4.1 Introduction 2 4.2 General Principle 4 4.3 Brute-Force Optimization Approach for CV Selection 8 4.4 Local Methods 11 4.4.1 Minimum Singular Value (MSV) Rule 12 4.4.2 Exact Local Method 14 4.4.3 Optimal Measurement Combination 16 4.4.3.1 Null Space Method 16 4.4.3.2 Explicit Solution 17 4.4.3.3 Toy Example 19 4.5 Branch and Bound Methods 21 4.6 Constraint Handling 23 4.7 Case Study: Forced Circulation Evaporator 26 4.8 Conclusions and Discussion 32 4.9 Acknowledgements 34 References 34 5 Input-Output Pairing Selection for Design of Decentralized Controller 5.1 Introduction 2 5.1.1 State of the Art 3 5.2 Relative Gain Array and Variants 5 Steady-State RGA 6 5.2.2 Niederlinski Index 8 5.2.3 The Dynamic Relative Gain Array 9 5.2.4 The Effective Relative Gain Array 11 5.2.5 The Block Relative Gain 12 5.2.6 Relative Disturbance Gain Array 14 5.3 µ-Interaction Measure 15 5.4 Pairing Analysis Based on the Controllability and Observability 17 5.4.1 The Participation Matrix 17 5.4.2 The Hankel Interaction Index Array 19 5.4.3 The Dynamic Input-Output Pairing Matrix 19 Input-Output Pairing for Uncertain Multivariable Plants 21 RGA in the Presence of Statistical Uncertainty 22 RGA in the Presence of Norm-Bounded Uncertainties 23 DIOPM and the Effect of Uncertainty 26 Input-Output Pairing for Nonlinear Multivariable Plants 28 5.6.1 Relative Order Matrix 29 5.6.2 The Nonlinear RGA 30 5.7 Conclusions and Discussion 31 References 33 6 Heuristics for Plantwide Control 6.1 Introduction 2 6.2 Basics of Heuristic Plantwide Control 4 6.2.1 Plumbing 5 6.2.2 Recycle 6 6.2.2.1 Effect of Recycle on Time Constants 6 6.2.2.2 Snowball Effects in Liquid Recycle Systems 7 6.2.2.3 Gas Recycle Systems 8 6.2.3 Fresh Feed Introduction 8 6.2.3.1 Ternary Example 9 6.2.3.2 Control Structures 11 6.2.3.3 Ternary Process with Altered Volatilities 12 6.2.4 Energy Management and Integration 12 6.2.5 Controller Tuning 13 6.2.5.1 Flow and Pressure Contro

• ISBN: 978-0-470-98014-9
• Editorial: John Wiley & Sons
• Encuadernacion: Cartoné
• Páginas: 512
• Fecha Publicación: 23/03/2012
• Nº Volúmenes: 1
• Idioma: Inglés