مکانیسم‌های انتقال جرم

Mass transfer specifically refers to the relative motion of species in a mixture due to concentration gradients. In many technical applications, heat transfer processes occur simultaneously with mass transfer processes. The present book discusses these transfer mechanisms. The book offers professional chemical engineers and students reference on transport phenomena or separation processes unique to these complex systems. Cover Half Title Page Full Title Page Copyright Page About the Authors Table of Contents List of Figures List of Tables Preface Chapter 1 Introduction 1.1. Basic Concepts 1.2. Equilibrium 1.3. Mechanisms of Mass Transfer 1.4. Diffusion 1.5. Convection Chapter 2 Typical Examples of Mass Transfer 2.1. Gas Absorption 2.2. Distillation 2.3. Extraction of Solids (Leaching) 2.4. Liquid Extraction 2.5. Crystallization 2.6. Drying Chapter 3 Mass Balance 3.1. Introduction 3.2. Continuity Equation for A Single Component 3.3. Molar Continuity Equation for a Single Component 3.4. Continuity Equation Using Fick’s Law 3.5. Simplifications on The Continuity Equation 3.6. Boundary Condition Chapter 4 Steady-State Diffusion Without Chemical Reaction 4.1. Introduction 4.2. Steady-State Diffusion Through Stagnant Inert Gas 4.3. Quasi-Steady-State Diffusion Through Stagnant Inert Gas 4.4. Diffusion In A Falling Liquid Film Chapter 5 Steady-State Diffusion With Chemical Reaction 5.1. Introduction 5.2. Heterogeneous Reaction 5.3. Homogeneous Reaction 5.4. Effectivity Factor Chapter 6 Liquid–Liquid Mass Transfer – Extraction 6.1. Equipment Selection 6.2. Types of Equipment 6.3. Fundamentals of Extraction 6.4. Liquid-Liquid Equilibrium 6.5. Project Specifications 6.6. Extraction Unit Dimensioning 6.7. Total Volumetric Flow 6.8. Column Height 6.9. Simulation of Liquid-Liquid Extraction – Equations Involved 6.10. Cross Current Modeling Chapter 7 Vapor-Liquid Mass Transfer – Distillation 7.1. Introduction 7.2. Flash Distillation 7.3. Batch (Differential) Distillation Chapter 8 Computational Solution of Distillation Problems 8.1. Example 8.1 – Flash Distillation (Modified From Mccabe Et Al.(1993)) 8.2. Example 8.2 – Batch Distillation (Modified From Mccabe Et Al.(1993)) Chapter 9 Stage-Contact Plants 9.1. Introduction 9.2. Terminology 9.3. Material Balance 9.4. Operating Line 9.5. Construction of Operating Line 9.6. Ideal Contact Stages Chapter 10 Gas Absorption 10.1. Introduction 10.2. Solvent Selection 10.3. Vapor-Liquid Equilibrium 10.4. Equipment Selection 10.5. Unit Project 10.6. Modeling The Gas Absorption Processes (Based on Fctuc Departamento De Engenharia Química (N.D.)) 10.7. Operating Line And Minimum Flow 10.8. Overflow Point and Column Diameter 10.9. Absorption Mechanism 10.10. Packing Height 10.11. Diluted Systems 10.12. Empirical Correlations For Mass Transfer Coefficients Chapter 11 Additional Project Specifications – Heuristics 11.1. Design of Packed Towers (Based On Mccabe Et Al.(1993)) Chapter 12 Gas Absorption Through Packing Towers – Study Cases 12.1. Case 1 – Obtain The Diameter of A Packing Column 12.2. Case 2 – Obtain The Height of An Absorption Tower Chapter 13 Case Study – Development of An Educational CLI For Flash Distillation Analysis Abstract 13.1. Introduction 13.2. Motivation 13.3. Objectives 13.4. Literature Review 13.5. Development of the CLI Simulator Chapter 14 Appendix A – Packed Tower Simulator 14.1. A.1 – Gasmodels.py 14.2. A.2 – Problem_input.py 14.3. A.3 – Run_model.py Bibliography Index