2nd Edition
Principles of Chemical Engineering Processes Material and Energy Balances, Second Edition
Principles of Chemical Engineering Processes: Material and Energy Balances introduces the basic principles and calculation techniques used in the field of chemical engineering, providing a solid understanding of the fundamentals of the application of material and energy balances. Packed with illustrative examples and case studies, this book:
- Discusses problems in material and energy balances related to chemical reactors
- Explains the concepts of dimensions, units, psychrometry, steam properties, and conservation of mass and energy
- Demonstrates how MATLAB® and Simulink® can be used to solve complicated problems of material and energy balances
- Shows how to solve steady-state and transient mass and energy balance problems involving multiple-unit processes and recycle, bypass, and purge streams
- Develops quantitative problem-solving skills, specifically the ability to think quantitatively (including numbers and units), the ability to translate words into diagrams and mathematical expressions, the ability to use common sense to interpret vague and ambiguous language in problem statements, and the ability to make judicious use of approximations and reasonable assumptions to simplify problems
This Second Edition has been updated based upon feedback from professors and students. It features a new chapter related to single- and multiphase systems and contains additional solved examples and homework problems. Educational software, downloadable exercises, and a solutions manual are available with qualifying course adoption.
Preface
Acknowledgments
Authors
Systems of Units
Conversion factors
Introduction
Definitions of Chemical Engineering
Sets of Units and Unit Conversion
Conversion of Units
Temperature Measurement
Temperature Conversion
Significant Figures
Multiplication, Division, Addition, and Subtraction of Significant Numbers
Dimensional Homogeneity
Dimensionless Quantities
Process and Process Variables
Process Flow Sheet
Process Unit
Process Streams
Density, Mass, and Volume
Mass and Volumetric Flow Rates
Moles and Molecular Weight
Compositions of Streams
Mass Fraction and Mole Fraction
Concentration
Pressure Measurement
Types of Pressures
Standard Temperature and Pressure
Pressure-Sensing Devices
Process Classification and Material Balance
Material and Energy Balances
Process Units and Degree of Freedom Analysis
Process Units: Basic Functions
Divider (Splitter)
Mixer (Blender)
Dryer (Direct Heating)
Filter
Distillation Column
Multieffect Evaporator
Dehumidification
Humidifier
Leaching and Extraction
Absorber (Stripper)
Partial Condenser and Flash Separator
Flash Separator
Crystallizer
Reactors
Batch Reactor
PFRs and PBRs
CSTR and Fluidized Bed Reactor
Process Flow Diagram
Labeling a PFD
Degree of Freedom Analysis
Possible Outcomes of DFA
Independent Equations
Multiple-Unit PFD
DFA, Multiunit Process
Material Balance on Single-Unit Process
Introduction to Material Balance
Material Balance Fundamentals
Mass Balance on Steady-State Processes
Stream Specification
Basis for Calculation
Procedure for Solving Material Balance Problems
Multiple-Unit Process Calculations
Multiple-Unit Process
Degree of Freedom Analysis
Recycle, Bypass, Purge, and Makeup
Recycle
Bypass
Purge
Makeup
Material Balances on Reactive Systems
Stoichiometry Basics
Stoichiometric Equation
Stoichiometric Coefficients
Stoichiometric Ratio
Limiting Reactant
Excess Reactants
Fractional Conversion
General Material Balance
Differential Balance
Integral Balance
Formulation Approaches of Mass Balance
Extent of Reaction Method for a Single Reaction
Element or Atomic Balance Method
Molecular or Component Balance Approach
Extent of Reaction and Multiple Reactions
Molecular Species Approach for Multiple Reactions
Degree of Freedom Analysis for Reactive Processes
Chemical Equilibrium
Combustion Reactions
Theoretical and Excess Air
Multiple-Unit Systems Involving Reaction, Recycle, and Purge
Multiple-Unit Process Flowcharts
Flow Sheet for Reaction with Recycle
Reaction with Product Splitter and Recycle
Reaction with Recycle and Purge
Degree of Freedom Analysis for Reactive Multiple-Unit Processes
Reaction and Multiple-Unit Steady-State Processes
Single- and Multiphase Systems
Single-Phase Systems
Liquid and Solid Densities
Ideal Gas Equation of State
Gas Density
Real Gas Relationships
Compressibility Factor (z)
Virial Equation of State
Van der Waals Equation of State
Soave–Redlich–Kwong Equation of State
Kay’s Mixing Rules
Multiphase Systems
Phase Diagram
Vapor–Liquid Equilibrium Curve
Vapor Pressure Estimation
Clapeyron Equation
Clausius–Clapeyron Equation
Cox Chart
Antoine Equation
Partial Pressure
Dalton’s Law of Partial Pressures
Raoult’s Law for a Single Condensable Species
Gibbs’ Phase Rule
Bubble Point, Dew Point, and Critical Point
Energy and Energy Balances
Energy Balance for Closed and Open Systems
Forms of Energy: The First Law of Thermodynamics
Energy Balance for a Closed System
Energy Balance for an Open System
Steam Turbine
Heaters and Coolers
Compressors
Mechanical Energy Balance
Bernoulli’s Equation
Enthalpy Calculations
Enthalpy Change as a Result of Temperature
Constant Heat Capacity
Enthalpy Calculations with Phase Changes
Energy Balance for Open Systems with Multiple Inputs and Multiple Outputs
Enthalpy Change because of Mixing
Energy Balance for Bioprocesses
Psychrometric Chart
Summary
Energy Balance with Reaction
Heat of Reaction
Heats of Formation and Heat of Combustion
Extent of Reaction
Reactions in Closed Processes
Energy Balance for Reactive Processes
Heat of Reaction Method
Heat of Formation or Element Balance Method
Simultaneous Material and Energy Balances
Unknown Process Exit Temperature
Combustion Processes
Energy Balance in Bioprocesses
Energy Balance in Membrane Reactors
Summary
Simultaneous Material and Energy Balances
Material Balances
Conversion
Yield
Selectivity
Extent of Reaction (ξ)
Energy Balances
Heat of Reaction Method
Heat of Formation Method
Concept of Atomic Balances
Mathematical Formulation of the Atomic Balance
Degree of Freedom Analysis for the Atomic Balance
Implementing Recycle on the Separation Process
Unsteady-State Material and Energy Balances
Unsteady-State Material Balance
Unsteady-State Energy Balance
Appendices
Index
*Every chapter includes learning objectives, homework problems, and references.
Biography
Nayef Ghasem is an associate professor of chemical engineering at the United Arab Emirates University, Al Ain. Previously, he taught at the University of Malaya, Kuala Lumpur, Malaysia. A member of IChemE and ACS, he has published more than 40 journal papers, primarily in modeling and simulation, bifurcation theory, gas–liquid separation using membrane contactors, and fabrication of polymeric hollow fiber membranes. He has also authored Computer Methods in Chemical Engineering, published by CRC Press. He holds a B.Sc and M.Sc from the Middle East Technical University, Ankara, Turkey, and a Ph.D from the University of Salford, Greater Manchester, UK.
Redhouane Henda is a professor of chemical engineering at the Laurentian University, Sudbury, Ontario, Canada. His research focuses on nanoscience and technology of thin films and process engineering of complex systems. He has received fellowships from the French Ministry of Higher Education and the German Alexander von Humboldt Foundation, as well as a scholarship from the Research Council of Norway. He earned his M.Sc and Ph.D from the Institut National Polytechnique de Toulouse, France, and spent a postdoctoral fellowship at the Universität Heidelberg, Germany. Widely published, he has served on the editorial boards of numerous journals and developed computer modules for research and education.
"Throughout this book the underlying theory of material and energy balances is clearly and succinctly presented by the authors before extensive worked examples are used to demonstrate its application to a range of process problems including multiple units systems with and without reactions occurring. This would allow the book to be used as a main text for an entry level undergraduate course in fundamental chemical process principles or used by practising engineers for both reference and self-study. The authors have clearly given a lot of thought on how to present the material in a user-friendly way to maximize learning and facilitate understanding of core chemical engineering principles."
—Dr. Diane Rossiter, Retired Senior University Teacher, The University of Sheffield, UK"The materials are well organized in a step-by-step style and engage readers greatly. In addition to helping chemical engineering students to directly select and master the topics of their interest, the book may even help non-chemical engineering students to grasp the most important basics of chemical engineering. A quick understanding of basic chemical engineering concepts is delivered briefly and clearly without losing accuracy and depth. The examples provided in the book are great for the readers to comprehend the concepts, calculations, and chemical unit operations."
—Zhaolin (Forest) Wang, University of Ontario Institute of Technology, Canada"The contents are excellent. Starting with detailed analysis of a single unit without chemical reaction and then gradually moving into multiple units with chemical reactions is a very good approach to train chemical engineering students."
—Professor Iqbal M Mujtaba, University of Bradford, UK