9. Design of hybrid distillation and vapor permeation or pervaporation systems
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Juan Álvaro León
Abstract
It is accepted that conventional distillation is one of the most used separation processes in industry. This versatile and relatively simple technology can produce high-purity products. Despite considered a mature technology, one of the main disadvantages of distillation still resides in its high energy demand which conflicts with current and future energy utilization constraints. New approaches to increase energy efficiency have been explored for several decades where process intensification concepts are inspiring and have produced substantial improvements. For example, recent technologies have been proposed such as: dividing wall columns, Higee distillation, cyclic distillation, heat-integrated distillation, reactive distillation, and reactive dividing-wall columns. However, some opportunities remain for mixtures with azeotropes, which are especially energy intensive to separate by distillation. Therefore, despite the technological advances, new concepts are required combining distillation with more energetically efficient separation technologies. Among alternatives, hybrid distillation systems with pervaporation or vapor permeation are especially interesting. Thus, they have been extensively studied over the last couple of decades. The purpose of this chapter is to show the main configuration of these hybrid systems, some examples and several design tools for hybrid distillation- membrane processes. Besides, it presents the main aspects of pervaporation and vapor permeation technology. Different discussions are presented not only for systems design but also for membrane producers in order to aim for more suitable materials and performance.
Abstract
It is accepted that conventional distillation is one of the most used separation processes in industry. This versatile and relatively simple technology can produce high-purity products. Despite considered a mature technology, one of the main disadvantages of distillation still resides in its high energy demand which conflicts with current and future energy utilization constraints. New approaches to increase energy efficiency have been explored for several decades where process intensification concepts are inspiring and have produced substantial improvements. For example, recent technologies have been proposed such as: dividing wall columns, Higee distillation, cyclic distillation, heat-integrated distillation, reactive distillation, and reactive dividing-wall columns. However, some opportunities remain for mixtures with azeotropes, which are especially energy intensive to separate by distillation. Therefore, despite the technological advances, new concepts are required combining distillation with more energetically efficient separation technologies. Among alternatives, hybrid distillation systems with pervaporation or vapor permeation are especially interesting. Thus, they have been extensively studied over the last couple of decades. The purpose of this chapter is to show the main configuration of these hybrid systems, some examples and several design tools for hybrid distillation- membrane processes. Besides, it presents the main aspects of pervaporation and vapor permeation technology. Different discussions are presented not only for systems design but also for membrane producers in order to aim for more suitable materials and performance.
Kapitel in diesem Buch
- Frontmatter I
- Contents V
- List of contributors XIII
- 1. Generalities about process intensification 1
- 2. Microreactors: Design methodologies, technology evolution, and applications to biofuels production 15
- 3. Heat transfer enhancement technologies for improving heat exchanger performance 51
- 4. Reactive absorption of carbon dioxide: Modeling insights 79
- 5. Optimal design methodology for homogeneous azeotropic distillation columns 125
- 6. Graphical tools for designing intensified distillation processes: Methods and applications 145
- 7. Optimization methodologies for intensified distillation processes with flexible heat integration networks 181
- 8. Conception, design, and development of intensified hybrid-bioprocesses 211
- 9. Design of hybrid distillation and vapor permeation or pervaporation systems 243
- 10. Lignocellulosic biofuels process synthesis and intensification: Superstructure-based methodology 277
- Index 327
Kapitel in diesem Buch
- Frontmatter I
- Contents V
- List of contributors XIII
- 1. Generalities about process intensification 1
- 2. Microreactors: Design methodologies, technology evolution, and applications to biofuels production 15
- 3. Heat transfer enhancement technologies for improving heat exchanger performance 51
- 4. Reactive absorption of carbon dioxide: Modeling insights 79
- 5. Optimal design methodology for homogeneous azeotropic distillation columns 125
- 6. Graphical tools for designing intensified distillation processes: Methods and applications 145
- 7. Optimization methodologies for intensified distillation processes with flexible heat integration networks 181
- 8. Conception, design, and development of intensified hybrid-bioprocesses 211
- 9. Design of hybrid distillation and vapor permeation or pervaporation systems 243
- 10. Lignocellulosic biofuels process synthesis and intensification: Superstructure-based methodology 277
- Index 327
