Crystallization is an important technique for separation and purification of substances as well as for product design in chemical, pharmaceutical and biotechnological process industries. This ready reference and handbook draws on research work and industrial practice of a large group of experts in the various areas of industrial crystallization processes, capturing the essence of current trends, the markets, design tools and technologies in this key field. Along the way, it outlines trouble free production, provides laboratory controls, analyses case studies and discusses new…mehr
Crystallization is an important technique for separation and purification of substances as well as for product design in chemical, pharmaceutical and biotechnological process industries. This ready reference and handbook draws on research work and industrial practice of a large group of experts in the various areas of industrial crystallization processes, capturing the essence of current trends, the markets, design tools and technologies in this key field. Along the way, it outlines trouble free production, provides laboratory controls, analyses case studies and discusses new challenges.
First the instrumentation and techniques used to measure the crystal size distribution, the nucleation and solubility points, and the chemical composition of the solid and liquid phase are outlined. Then the main techniques adopted to control industrial crystallizers, starting from fundamental approaches to the most advanced ones, including the multivariable predictive control are described. An overview of the main crystallizer types is given with details of the main control schemes adopted in industry as well as the more suitable sensors and actuators.Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.
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Autorenporträt
Angelo Chianese is full Professor of Chemical Plant Design at the University of Rome La Sapienza. He worked as a process engineer for the first 10 years of his working life, before joining academia. Prof. Chianese has more than 30 years in the field of industrial crystallization. In this respect, he collaborated with the major academic laboratories all over the world and major industrial companies. Between 1998 and 2001 he was the coordinator of the European Thematic Network on Industrial Crystallization (acronym. CRYSOPT) and since 1990 was partner in many European projects. He is one of the two Italian delegates at the European Working Party on Crystallization.
Herman J. M. Kramer is associate professor at the Delft University of Technology, The Netherlands, working on the design, monitoring and control of crystallization and precipitation processes. He headed a large number of international multi client, multidisciplinary, research projects on design, monitoring and control of industrial crystallization. He was president of the Dutch Association of Crystal growth and is nowadays member of the European Working Party of Industrial Crystallization.
Inhaltsangabe
PREFACE
CHARACTERIZATION OF CRYSTAL SIZE DISTRIBUTION Introduction Particle Size Distribution Particle Size Distribution Moments Particle Size Distribution Characterization on the Basis of Mass Distribution
FORWARD LIGHT SCATTERING Introduction Principles of Laser Diffraction Scatter Theory Deconvolution The Effects of Shape Multiple Scattering Application of Laser Diffraction for Monitoring and Control of Industrial Crystallization Processes Conclusions
TURBIDIMETRY FOR THE ESTIMATION OF CRYSTAL AVERAGE SIZE Introduction Determination of Average Particle Size from Specific Turbidity Procedure to Evaluate Average Crystal Size by Turbidimetry for a High Solid Slurry Concentration Conclusion
IMAGING Introduction Literature Overview The Sensor Design Application of In Situ Imaging for Monitoring Crystallization Processes Conclusions
TURBIDIMETRY AND NEPHELOMETRY Introduction Measurement of Nucleation and Solubility Points The Developed Turbidimetric and Nephelometric Instruments The Examined Systems Obtained Results
SPEED OF SOUND Introduction In-Process Ultrasound Measurement Determining Solubility and Metastable Zone Width Measuring Crystal Growth Rates Detecting Phase Transitions with Ultrasound
IN-LINE PROCESS REFRACTOMETER FOR CONCENTRATION MEASUREMENT IN SUGAR CRYSTALLIZERS Introduction Measurement Principle In-Line Instrument Features and Benefits Features and Benefits Example of Application in the Crystallization Conclusion
BASIC RECIPE CONTROL Introduction Incentives for Basic Recipe Control Main Mechanisms, Sensors, and Actuators Basic Recipe Control Strategy Seeding as a Process Actuator Rate of Supersaturation Generation Mixing and Suspension of Solids Fines Removal and Dissolution Implementation of Basic Recipe Control Conclusions
SEEDING TECHNIQUE IN BATCH CRYSTALLIZATION Introduction Seeding Operation: Main Principles and Phenomena Use of Seeding for Batch Crystallization: Main Process Parameters Control of Batch Crystallization by Seeding: Empirical Rules for Design
ADVANCED RECIPE CONTROL Introduction Incentives and Strategy of the Advanced Recipe Control Modeling for Optimization, Prediction, and Control Model Validation Rate of Supersaturation Generation Mixing Conditions Implementation Example of Modeling, Optimization, and Open-Loop Control of a 75-l Draft-Tube Crystallizer Conclusions
ADVANCED MODEL-BASED RECIPE CONTROL Introduction Online Dynamic Optimization MPC for Batch Crystallization Conclusions and Perspectives
FINES REMOVAL Introduction Fines Removal by Heat Dissolution Modeling of an MSMPR Continuous Crystallizer with Fines Removal Fines Destruction in the Industrial Practice CSD Control by Fines Removal for Pilot Scale Crystallizers The Cycling Phenomenon as Undesired Effect of Fines Destruction in Industrial Crystallizers
MODEL PREDICTIVE CONTROL Introduction Approach for Designing and Implementing an MPC Control System Process Modeling The Performance Index Constraints The MPC Optimization Tuning State Estimation Implementation MPC of Crystallization Processes Delta-Mode MPC Conclusions and Perspectives
INDUSTRIAL CRYSTALLIZERS DESIGN AND CONTROL Introduction Forced Circulation Crystallizer Draft-Tube-Baffle Crystallizer Process Variables in Crystallizer Operation Sensors Control Devices
CHARACTERIZATION OF CRYSTAL SIZE DISTRIBUTION Introduction Particle Size Distribution Particle Size Distribution Moments Particle Size Distribution Characterization on the Basis of Mass Distribution
FORWARD LIGHT SCATTERING Introduction Principles of Laser Diffraction Scatter Theory Deconvolution The Effects of Shape Multiple Scattering Application of Laser Diffraction for Monitoring and Control of Industrial Crystallization Processes Conclusions
TURBIDIMETRY FOR THE ESTIMATION OF CRYSTAL AVERAGE SIZE Introduction Determination of Average Particle Size from Specific Turbidity Procedure to Evaluate Average Crystal Size by Turbidimetry for a High Solid Slurry Concentration Conclusion
IMAGING Introduction Literature Overview The Sensor Design Application of In Situ Imaging for Monitoring Crystallization Processes Conclusions
TURBIDIMETRY AND NEPHELOMETRY Introduction Measurement of Nucleation and Solubility Points The Developed Turbidimetric and Nephelometric Instruments The Examined Systems Obtained Results
SPEED OF SOUND Introduction In-Process Ultrasound Measurement Determining Solubility and Metastable Zone Width Measuring Crystal Growth Rates Detecting Phase Transitions with Ultrasound
IN-LINE PROCESS REFRACTOMETER FOR CONCENTRATION MEASUREMENT IN SUGAR CRYSTALLIZERS Introduction Measurement Principle In-Line Instrument Features and Benefits Features and Benefits Example of Application in the Crystallization Conclusion
BASIC RECIPE CONTROL Introduction Incentives for Basic Recipe Control Main Mechanisms, Sensors, and Actuators Basic Recipe Control Strategy Seeding as a Process Actuator Rate of Supersaturation Generation Mixing and Suspension of Solids Fines Removal and Dissolution Implementation of Basic Recipe Control Conclusions
SEEDING TECHNIQUE IN BATCH CRYSTALLIZATION Introduction Seeding Operation: Main Principles and Phenomena Use of Seeding for Batch Crystallization: Main Process Parameters Control of Batch Crystallization by Seeding: Empirical Rules for Design
ADVANCED RECIPE CONTROL Introduction Incentives and Strategy of the Advanced Recipe Control Modeling for Optimization, Prediction, and Control Model Validation Rate of Supersaturation Generation Mixing Conditions Implementation Example of Modeling, Optimization, and Open-Loop Control of a 75-l Draft-Tube Crystallizer Conclusions
ADVANCED MODEL-BASED RECIPE CONTROL Introduction Online Dynamic Optimization MPC for Batch Crystallization Conclusions and Perspectives
FINES REMOVAL Introduction Fines Removal by Heat Dissolution Modeling of an MSMPR Continuous Crystallizer with Fines Removal Fines Destruction in the Industrial Practice CSD Control by Fines Removal for Pilot Scale Crystallizers The Cycling Phenomenon as Undesired Effect of Fines Destruction in Industrial Crystallizers
MODEL PREDICTIVE CONTROL Introduction Approach for Designing and Implementing an MPC Control System Process Modeling The Performance Index Constraints The MPC Optimization Tuning State Estimation Implementation MPC of Crystallization Processes Delta-Mode MPC Conclusions and Perspectives
INDUSTRIAL CRYSTALLIZERS DESIGN AND CONTROL Introduction Forced Circulation Crystallizer Draft-Tube-Baffle Crystallizer Process Variables in Crystallizer Operation Sensors Control Devices
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