Microsoft PowerPoint - Intoduction to Unit Operations 1

Microsoft PowerPoint - Intoduction to Unit Operations 1 -...

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Unformatted text preview: INTRODUCTION TO UNIT OPERATIONS 1 Prepared by: S.M. rafigh 2011 Introduction Introduction W h a t i s c h e m i c a l e n g i n e e r i n g ? Chemical Engineering is a group of industrial processes in which row materials are changed or separated into useful products H i s t o r i c a l d e v e l o p m e n t : As the Industrial Revolution steamed along certain basic chemicals quickly became necessary to sustain growth- E x a m p l e : Sulfuric acid was first among these "industrial chemicals". http://www.pafko.com/ Chemistry:- to create a new substance- to study its properties- to investigate all possible pathways from one substance to another Chemical Engineering:- to design the most optimal technology for production of a specified substance from row materials- to develop and discover new technological applications for materials Process flowsheet: Example Process flowsheet: Example 1 Process flowsheet: Example Process flowsheet: Example 2 Comparison of two processes Comparison of two processes Units: Units: - Heaters/heat exchangers Heaters/heat exchangers- Pumps Pumps- Distillation units Distillation units- Reactors Reactors- … Actions: Actions:- Heat exchange Heat exchange- Material transport Material transport- Separation Separation- Mixing Mixing- … Unit Operations: Unit Operations:- Unit Operations is a method of analysis and design of chemical engineering processes in terms of individual tasks/operations- It is a way of organizing chemical engineering knowledge into groups of individual tasks/operations- A unit operation: basic step in a chemical engineering process Unit Operations: Classification Unit Operations: Classification Fluid flow processes- fluid transport- solids fluidization- mixing Heat transfer processes Thermodynamic processes- liquifaction- refrigeration Mechanical processes- heating/cooling- evaporation/condensation Mass transfer processes- absorption- distillation- extraction- adsorption- drying- crushing- sieving- solid transportation Section Lectures Tutorial 1. Introduction, revision, binary distillation with non- constant molar overflow 2. Separation of multicomponent mixtures 3. Separations in packed olumns. Absorption 1.1 Introduction to Unit Operations; Equilibrium stage operations (L1) 1.2 Thermodynamics of distillation (L2) 1.3 Binary distillations review (L3) 2.1 Multicomponent Distillation: Flash distillation (L4) 2.2 Multicomponent Distillation: Short Cut Methods (L5) 2.3 Multicomponent Distillation: Short Cut Methods (L6) 3.1 Mass transport theories review (L7) columns. Absorption 4. Adsorption processes 5. Humidification processes 6. Drying processes 7. Revision and problems 3.2 Mass transport theories review (L8) 3.3 Packed bed columns (L9) 3.4 Packed bed columns (L10) 4.1 Principles of adsorption (L11) 4.2 Principles of adsorption (L12) 5.1 Principles of humidification (L13) 5.2 Methods of humidification (L14) 6.1 Principles of drying (L15) 6.2 Methods of drying (L16) 7.1 Revision (L17) 7.2 Revision (L18) Total...
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This note was uploaded on 06/21/2011 for the course CHE 329 taught by Professor Prof. rafigh during the Winter '10 term at Sharif University of Technology.

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Microsoft PowerPoint - Intoduction to Unit Operations 1 -...

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