Chemical reaction engineering introduction by Er sohel R sheikh
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This document provides an introduction to chemical reaction engineering (CRE). CRE studies the rates and mechanisms of chemical reactions and the design of reactors. It discusses various reactor types including batch, continuously stirred tank reactor (CSTR), plug flow reactor (PFR), and packed bed reactor (PBR). The general mole balance equation is presented and applied to these different reactor configurations. Industries that rely heavily on CRE principles include chemical, pharmaceutical, and microelectronics.
![Reaction Rate
Consider species j:
• rj is the rate of formation of species j per
unit volume [e.g. mol/dm3
/s]](https://image.slidesharecdn.com/cresrs-160519165124/85/Chemical-reaction-engineering-introduction-by-Er-sohel-R-sheikh-19-320.jpg)
![Reaction Rate
• rj is the rate of formation of species j per
unit volume [e.g. mol/dm3
*s]
• rj is a function of concentration,
temperature, pressure, and the type of
catalyst (if any)](https://image.slidesharecdn.com/cresrs-160519165124/85/Chemical-reaction-engineering-introduction-by-Er-sohel-R-sheikh-20-320.jpg)
![Reaction Rate
• rj is the rate of formation of species j per unit
volume [e.g. mol/dm3
/s]
• rj is a function of concentration, temperature,
pressure, and the type of catalyst (if any)
• rj is independent of the type of reaction system
(batch reactor, plug flow reactor, etc.)](https://image.slidesharecdn.com/cresrs-160519165124/85/Chemical-reaction-engineering-introduction-by-Er-sohel-R-sheikh-21-320.jpg)
![Reaction Rate
• rj is the rate of formation of species j per
unit volume [e.g. mol/dm3
/s]
• rj is a function of concentration,
temperature, pressure, and the type of
catalyst (if any)
• rj is independent of the type of reaction
system (batch, plug flow, etc.)
• rj is an algebraic equation, not a](https://image.slidesharecdn.com/cresrs-160519165124/85/Chemical-reaction-engineering-introduction-by-Er-sohel-R-sheikh-22-320.jpg)
Chemical reaction engineering introduction by Er sohel R sheikh
- 1. Chemical reaction Engg {C.R.E} By Er Sohel R Sheikh Srs’s ltd , Nagpur
- 2. Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place. TODAY’S LECTURE Introduction Definitions General Mole Balance Equation Batch CSTR PFR PBR
- 3. Chemical Reaction Engineering Chemical reaction engineering is at the heart of virtually every chemical process. It separates the chemical engineer from other engineers. Industries that Draw Heavily on Chemical Reaction Engineering (CRE) are: CPI (Chemical Process Industries) Dow, DuPont, Amoco, Chevron
- 6. Let’s Begin CRE Chemical Reaction Engineering (CRE) is the field that studies the rates and mechanisms of chemical reactions and the design of the reactors in which they take place.
- 7. • A chemical species is said to have reacted when it has lost its chemical identity. Chemical Identity
- 8. • A chemical species is said to have reacted when it has lost its chemical identity. • The identity of a chemical species is determined by the kind, number, and configuration of that species’ atoms. Chemical Identity
- 9. • A chemical species is said to have reacted when it has lost its chemical identity. 1. Decomposition Chemical Identity
- 10. • A chemical species is said to have reacted when it has lost its chemical identity. 1. Decomposition 2. Combination Chemical Identity
- 11. • A chemical species is said to have reacted when it has lost its chemical identity. 1. Decomposition 2. Combination 3. Isomerization Chemical Identity
- 12. • The reaction rate is the rate at which a species looses its chemical identity per unit volume. Reaction Rate
- 13. • The reaction rate is the rate at which a species looses its chemical identity per unit volume. • The rate of a reaction (mol/dm3 /s) can be expressed as either the rate of Disappearance: -rA or as the rate of Formation (Generation): rA Reaction Rate
- 14. Reaction Rate Consider the isomerization AB rA = the rate of formation of species A per unit volume -rA = the rate of a disappearance of species A per unit volume rB = the rate of formation of species B per unit volume
- 15. Reaction Rate • EXAMPLE: AB If Species B is being formed at a rate of 0.2 moles per decimeter cubed per second, ie, rB = 0.2 mole/dm3 /s
- 16. Reaction Rate • EXAMPLE: AB rB = 0.2 mole/dm3 /s Then A is disappearing at the same rate: -rA= 0.2 mole/dm3 /s
- 17. Reaction Rate • EXAMPLE: AB rB = 0.2 mole/dm3 /s Then A is disappearing at the same rate: -rA= 0.2 mole/dm3 /s The rate of formation (generation of A) is rA= -0.2 mole/dm3 /s
- 18. Reaction Rate • For a catalytic reaction, we refer to -rA', which is the rate of disappearance of species A on a per mass of catalyst basis. (mol/gcat/s) NOTE: dCA/dt is not the rate of reaction
- 19. Reaction Rate Consider species j: • rj is the rate of formation of species j per unit volume [e.g. mol/dm3 /s]
- 20. Reaction Rate • rj is the rate of formation of species j per unit volume [e.g. mol/dm3 *s] • rj is a function of concentration, temperature, pressure, and the type of catalyst (if any)
- 21. Reaction Rate • rj is the rate of formation of species j per unit volume [e.g. mol/dm3 /s] • rj is a function of concentration, temperature, pressure, and the type of catalyst (if any) • rj is independent of the type of reaction system (batch reactor, plug flow reactor, etc.)
- 22. Reaction Rate • rj is the rate of formation of species j per unit volume [e.g. mol/dm3 /s] • rj is a function of concentration, temperature, pressure, and the type of catalyst (if any) • rj is independent of the type of reaction system (batch, plug flow, etc.) • rj is an algebraic equation, not a
- 25. Batch Reactor Mole Balance
- 28. Plug Flow Reactor Mole Balance PFR: The integral form is: V= dFA rA FA0 FA ∫ This is the volume necessary to reduce the entering molar flow rate (mol/s) from FA0 to the exit molar flow rate of FA.
- 29. Packed Bed Reactor Mole Balance PBR The integral form to find the catalyst weight is: W= dFA ′rAFA0 FA ∫ FA0−FA+′rAdW= dNA dt ∫
- 30. Reactor Mole Balance Summary
- 31. Fast Forward to the Future Thursday March 20th , 2008 Reactors with Heat Effects
- 32. Production of Propylene Glycol in an Adiabatic CSTR
- 33. What are the exit conversion X and exit temperature T? Solution Let the reaction be represented by
- 42. KEEPING UP
- 43. Separations These topics do not build upon one another Filtration Distillation Adsorption
- 44. Reaction Engineering These topics build upon one another Mole Balance Rate Laws Stoichiometry
- 45. Mole Balance Rate Laws Stoichiometry Isothermal Design Heat Effects
- 46. Mole Balance Rate Laws
- 47. Mole Balance Rate Laws Stoichiometry Isothermal Design Heat Effects
- 50. Batch Reactor Mole Balance
- 51. Batch Reactor Mole Balance
- 52. Batch Reactor Mole Balance
- 53. Batch Reactor Mole Balance
- 54. Batch Reactor Mole Balance
- 55. Continuously Stirred Tank Reactor Mole Balance
- 56. Continuously Stirred Tank Reactor Mole Balance
- 57. Continuously Stirred Tank Reactor Mole Balance
- 58. C S T R Mole Balance
- 61. Plug Flow Reactor Mole Balance PFR:
- 62. Plug Flow Reactor Mole Balance PFR:
- 63. Plug Flow Reactor Mole Balance PFR:
- 64. Plug Flow Reactor Mole Balance PFR:
- 65. Plug Flow Reactor Mole Balance PFR:
- 66. Plug Flow Reactor Mole Balance PFR: The integral form is: V= dFA rA FA0 FA ∫
- 67. Plug Flow Reactor Mole Balance PFR: The integral form is: V= dFA rA FA0 FA ∫ This is the volume necessary to reduce the entering molar flow rate (mol/s) from FA0 to the exit molar flow rate of FA.
- 68. Packed Bed Reactor Mole Balance PBR
- 69. Packed Bed Reactor Mole Balance PBR FA0−FA+′rAdW= dNA dt ∫
- 70. Packed Bed Reactor Mole Balance PBR FA0−FA+′rAdW= dNA dt ∫
- 71. Packed Bed Reactor Mole Balance PBR FA0−FA+′rAdW= dNA dt ∫
- 72. Packed Bed Reactor Mole Balance PBR The integral form to find the catalyst weight is: W= dFA ′rAFA0 FA ∫ FA0−FA+′rAdW= dNA dt ∫
- 73. Reactor Mole Balance Summary
- 74. Reactor Mole Balance Summary
- 75. Reactor Mole Balance Summary
- 76. Reactor Mole Balance Summary
- 85. Chemical Reaction Engineering Asynchronous Video Series Chapter 1: General Mole Balance Equation Applied to Batch Reactors, CSTRs, PFRs, and PBRs
- 93. Chemical Reaction Engineering Chemical reaction engineering is at the heart of virtually every chemical process. It separates the chemical engineer from other engineers. Industries that Draw Heavily on Chemical Reaction Engineering (CRE) are: CPI (Chemical Process Industries) Dow, DuPont, Amoco, Chevron Pharmaceutical – Antivenom, Drug Delivery Medicine – Tissue Engineering, Drinking and Driving
- 94. Compartments for perfusion Perfusion interactions between compartments are shown by arrows. VG, VL, VC, and VM are -tissue water volumes for the gastrointestinal, liver, central and muscle compartments, respectively. VS is the stomach contents volume. Stomach VG = 2.4 l Gastrointestinal VG = 2.4 l tG = 2.67 min Liver Alcohol VL = 2.4 l tL = 2.4 min Central VC = 15.3 l tC = 0.9 min Muscle & Fat VM = 22.0 l tM = 27 min
- 96. Chemical Reaction Engineering Chemical reaction engineering is at the heart of virtually every chemical process. It separates the chemical engineer from other engineers. Industries that Draw Heavily on Chemical Reaction Engineering (CRE) are: CPI (Chemical Process Industries) Dow, DuPont, Amoco, Chevron Pharmaceutical – Antivenom, Drug Delivery Medicine –Pharmacokinetics, Drinking and Driving Microelectronics – CVD
- 97. The end