Rotary Reactor Engineering
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Table of contents
- Cover
- Contentsxi
- Prefacev
- Notationvii
- Chapter 1. Introduction1
- 1.1 Contacting methods between gas and solids1
- 1.2 Contact operation between gas and solids2
- 1.3 Residence time characteristics of solids4
- 1.4 Enhancement of gas-solid contacting in rotary reactors5
- 1.5 Examples of industrial application9
- 1.6 Cooperation with mechanical engineers9
- References10
- Chapter 2. Movement of Solids in Rotary Cylinder11
- 2.1 Experimental studies on solids flow in a horizontally rotating cylinder11
- 2.2 Theoretical studies on movement of solids14
- 2.3 Improvement of residence time characteristics for rotating solids18
- References25
- Chapter 3. Conversion of Solids with Gaseous Reactant27
- 3.1 Reaction rate of solid conversion27
- 3.2 Kinetic models of gas-solid reactions30
- 3.3 Relation between rate constants of chemical reaction, based on different models32
- 3.4 Application of kinetic models to oxidation of carbon33
- 3.5 Gasification of carbon37
- 3.6 Activation of carbonaceous pellet40
- 3.7 Roasting of zinc sulfide41
- 3.8 Reduction of iron ore41
- References46
- Chapter 4. Thermal Decomposition and Conversion of Composite Pellets47
- 4.1 Elimination of trace species in solids47
- 4.2 Calcination of limestone47
- 4.3 Decomposition of manganese sulfate49
- 4.4 Thermal cracking of organic solids50
- 4.5 Composite made of iron ore and oil50
- 4.6 Reduction of composite pellet, ferro-chromium ore and coke52
- References55
- Chapter 5. Conversion of Solids in Rotary Reactors57
- 5.1 Conversion of gas and solids within solids layer57
- 5.2 Enhancement of contact by sending gaseous reactant into a rotating layer of solids61
- 5.3 High temperature stability of isolated solids in exothermic reaction64
- References68
- Chapter 6. Heat Transfer in a Rotary Reactor, Direct Heating69
- 6.1 Combustion of fuels69
- 6.2 Temperature profile in turbulent flame74
- 6.3 Heat transfer in a rotary reactor at high temperature76
- 6.4 Enhancement of heat transfer84
- References90
- Chapter 7. Performance of Rotary Reactors, Direct Heating93
- 7.1 Prediction of performance93
- 7.2 Calcination of limestone97
- 7.3 Pre-reduction of composite pellets, made of ferro-chromium ore and coke105
- 7.4 Activation of char109
- 7.5 Gasification of combustible feed stock111
- References125
- Chapter 8. Heat Transfer in Rotary Reactors, Indirect Heating127
- 8.1 Necessary information for satisfactory design127
- 8.2 Heat transfer within the rotary retort128
- 8.3 Heat transfer from an electric heater129
- 8.4 Heat transfer from gas flow132
- Reference142
- Chapter 9. Performance of Rotary Reactors, Indirect Heating143
- 9.1 Electric heating143
- 9.2 Heating by combustion gas148
- Chapter 10. Application of a Rotary Reactor for the Re-utilization of Solid Wastes163
- 10.1 Material and energy recovery from solid wastes163
- 10.2 Proposed rotary reactors for re-utilization of secondary resources164
- 10.3 Gasification of solid wastes167
- 10.4 Gasification of sewage sludge173
- 10.5 Possibility for application to gasification of low grade coal175
- References195
- Brief Careers of the Authors197
- Index199
Rotary reactors or rotary kilns are the reactors facilitating the chemical reaction between the gas and solid phases usually at high temperatures.
This book, which is written by an expert in the field, describes the principles of the rotary reactor and the mode of its operation. These reactors are widely used in various chemical process industries (food, pharmaceuticals) and metallurgical industries.
The book defines the physiochemical aspects of the rotart reactors and provides theoretical equations of their operation.
The first part of this book presents the fundamentals; solid movement, conversion of solids, and heat transfer. The middle part of the book applies these equations to a variety of processes which have been developed so far, and shows how they are used. In its last part, conceptual designs of novel rotary reactors are proposed, which performance characteristics are predicted on the basis of above equations, especially, in gasification of solid wastes.
- Defines the rotary reactors and their mode of operation.
- Defines all operating parameters and gives equations to predict the operation of rotary reactors under various conditions.
- Includes a number of practical examples from various industrial applications (metallurgical waste treatment etc).
This book, which is written by an expert in the field, describes the principles of the rotary reactor and the mode of its operation. These reactors are widely used in various chemical process industries (food, pharmaceuticals) and metallurgical industries.
The book defines the physiochemical aspects of the rotart reactors and provides theoretical equations of their operation.
The first part of this book presents the fundamentals; solid movement, conversion of solids, and heat transfer. The middle part of the book applies these equations to a variety of processes which have been developed so far, and shows how they are used. In its last part, conceptual designs of novel rotary reactors are proposed, which performance characteristics are predicted on the basis of above equations, especially, in gasification of solid wastes.
- Defines the rotary reactors and their mode of operation.
- Defines all operating parameters and gives equations to predict the operation of rotary reactors under various conditions.
- Includes a number of practical examples from various industrial applications (metallurgical waste treatment etc).