Chemical Process Engineering Volume 1
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Оглавление
A. Kayode Coker. Chemical Process Engineering Volume 1
Table of Contents
List of Tables
List of Illustrations
Guide
Pages
Chemical Process Engineering. Design, Analysis, Simulation and Integration, and Problem Solving With Microsoft Excel – UniSim Design Software
Companion Web Page
Gratitude
Dedication
Preface
Acknowledgments
About the Authors
1. Computations with Excel Spreadsheet-UniSim Design Simulation
SECTION I - NUMERICAL ANALYSIS. INTRODUCTION. Excel Spreadsheet
Functions
Trendline Coefficients
Goal Seek
SOLVER
LINEAR REGRESSION
Measuring Regression Quality
MULTIPLE REGRESSION
POLYNOMIAL REGRESSION
SIMULTANEOUS LINEAR EQUATIONS
NONLINEAR EQUATIONS
INTERPOLATIONS
INTEGRATIONS
The Trapezoidal Rule
Simpson’s 1/3 Rule
Simpson’s 3/8 Rule
DIFFERENTIAL EQUATIONS
Nth Order Ordinary Differential Equations
Solution of First-Order Ordinary Differential Equations
Runge-Kutta Methods
EXAMPLES AND SOLUTIONS. Example 1.1
Solution
Example 1.2
Solution
Example 1.3
Solution
Example 1.4
Solution
Example 1.5
Solution
Example 1.6
Solution
Example 1.7
Solution
Example 1.8
Solution
SECTION II – PROCESS SIMULATION. INTRODUCTION
Thermodynamics for Process Simulators
UNISIM Design Software
EXAMPLES AND SOLUTIONS. Example 1.9
Solution
Example 1.10
Solution
Example 1.11
Solution
Example 1.12
Solution
Example 1.13
Solution
Example 1.14
Solution
References
2. Physical Property of Pure Components and Mixtures
PURE COMPONENTS
Density of Liquid
Example 2.1
Solution
Viscosity of Liquid
Example 2.2
Solution
Heat Capacity of Liquid
Example 2.3
Solution
Thermal Conductivity of Liquid
Example 2.4
Solution
Volumetric Expansion Rate
Example 2.5
Solution
Vapor Pressure
Example 2.6
Solution
Viscosity of Gas
Example 2.7
Solution
Thermal Conductivity of Gas
Example 2.8
Solution
Heat Capacity of Gases
Example 2.9
Solution
MIXTURES
Surface Tensions
Example 2.10
Solution
Viscosity of Gas Mixture
Example 2.11
Solution
Enthalpy of Formation
Example 2.12
Solution
Enthalpy of Vaporization
Example 2.13
Solution
Gibbs Energy of Reaction
Example 2.14
Solution
Henry’s Law Constant for Gases in Water
Example 2.15
Solution
Coefficient of Thermal Expansion of Liquid
Example 2.16
Solution
DIFFUSION COEFFICIENTS
Gas-Phase Diffusion Coefficients
Example 2.17
Solution
Liquid-Phase Diffusion Coefficients
Example 2.18
Solution
COMPRESSIBILITY Z-FACTOR
Example 2.19
Solution
SOLUBILITY AND ADSORPTION
Solubility of Hydrocarbons in Water
Example 2.20
Solution
Solubility of Gases in Water
Example 2.21
Solution
Solubility of Sulfur and Nitrogen Compounds in Water
Example 2.22
Solution
Adsorption on Activated Carbon
Example 2.23
Solution
References
3. Fluid Flow. INTRODUCTION
FLOW OF FLUIDS IN PIPES
EQUIVALENT LENGTH OF VARIOUS FITTINGS AND VALVES
Excess Head Loss
Pipe Reduction and Enlargement
PRESSURE DROP CALCULATIONS FOR SINGLE-PHASE INCOMPRESSIBLE FLUIDS
Friction Factor
Overall Pressure Drop
Nomenclature
COMPRESSIBLE FLUID FLOW IN PIPES
Maximum Flow and Pressure Drop
Critical or Sonic Flow and the Mach Number
Mach Number
Mathematical Model of Compressible Isothermal Flow
Flow Rate Through Pipeline
Pipeline Pressure Drop
Nomenclature
Subscripts
TWO-PHASE FLOW IN PROCESS PIPING
Flow Patterns
Flow Regimes
Pressure Drop
Erosion-Corrosion
Nomenclature
VAPOR-LIQUID TWO-PHASE VERTICAL DOWNFLOW
The Equations
The Algorithm
Nomenclature
LINE SIZES FOR FLASHING STEAM CONDENSATE
The Equations
Nomenclature
FLOW THROUGH PACKED BEDS
The Equations
Nomenclature
EXAMPLES AND SOLUTIONS. Example 3.1
Solution
Example 3.2
Solution
Example 3.3
Solution
Solution - UniSim Design Software Simulator
Basis Environment:
Simulation Environment
Example 3.4
Solution
Example 3.5
Solution
Example 3.6
Solution
Example 3.7
Solution
Example 3.8
Solution
Example 3.9
Solution-Excel
Solution-UniSim Design Software
Basis Environment:
Simulation Environment
References
4. Equipment Sizing. INTRODUCTION
SIZING OF VERTICAL AND HORIZONTAL SEPARATORS. Vertical Separators
Calculation Method for a Vertical Drum
Calculation Method for a Horizontal Drum
Liquid Holdup and Vapor Space Disengagement
Wire Mesh Pad
Standards for Horizontal Separators
Piping Requirements
Nomenclature
SIZING OF PARTLY FILLED VESSELS AND TANKS
The Equations
Nomenclature
PRELIMINARY VESSEL DESIGN
Nomenclature
CYCLONE DESIGN. Introduction
Cyclone Design Procedure
The Equations
Saltation Velocity
Pressure Drop
Troubleshooting Cyclone Maloperations
Cyclone Collection Efficiency
Cyclone Design Factor
Cyclone Design Procedure
Nomenclature
GAS DRYER DESIGN
The Equations
Pressure Drop
Desiccant Reactivation
Nomenclature
EXAMPLES AND SOLUTIONS. Example 4.1
Solution
Example 4.2
Solution
Example 4.3
Solution
Example 4.4
Solution
Example 4.5
Solution
References
5. Instrument Sizing. INTRODUCTION
Variable-Head Meters
Macroscopic Mechanical Energy Balance
Variable-Head Meters
Example 5.1 Orifice Meter Sizing
Solution
Orifice Sizing for Liquid and Gas Flows
Orifice Sizing for Liquid Flows
Orifice Sizing for Gas Flows
Example 5.2. Orifice Sizing for Liquid Flow
Orifice Sizing for Gas Flow
Solution
Types of Restriction Orifice Plates
Case Study 1
Nomenclature
CONTROL VALVE SIZING. Introduction
Control Valve Characteristics
Pressure Drop for Sizing
Choked Flow
Flashing and Cavitation
Control Valve Sizing for Liquid, Gas, Steam and Two-Phase Flows
Liquid Sizing
Gas Sizing
Critical Condition
Steam Sizing
Two-Phase Flow
Installation
Noise
Control Valve Sizing Criteria
Valve Sizing Criteria
Self-Acting Regulators
Types of Self-Acting Regulators
Example 5.3
Solution
Case Study 2
Rules of Thumb
Nomenclature
References
6. Pumps and Compressors Sizing. PUMPS. INTRODUCTION. Pumping of Liquids
Pump Design Standardization
Basic Parts of a Centrifugal Pump
Impellers
Casing
Shaft
CENTRIFUGAL PUMP SELECTION
Single-Stage (Single Impeller) Pumps
Hydraulic Characteristics for Centrifugal Pumps
Example 6.1: Liquid Heads
Friction Losses Due to Flow
Velocity Head
Friction
NET POSITIVE SUCTION HEAD (NPSH) AND PUMP SUCTION
General Suction System
Reductions in NPSHR
Example 6.2. Corrections to NPSHR for Hot Liquid Hydrocarbons and Water
Charting NPSHR Values of Pumps
Net Positive Suction Head (NPSH)
Specific Speed
Example 6.3 “Type Specific Speed”
Rotative Speed
Pumping Systems and Performance
Example 6.4. System Head Using Two Different Pipe Sizes in Same Line
POWER REQUIREMENTS FOR PUMPING THROUGH PROCESS LINES
Hydraulic Power
Relations Between Head, Horsepower, Capacity, Speed. Brake Horsepower (BHP) Input at Pump
Example 6.5
Solution
AFFINITY LAWS
Example 6.6. Pump Parameters
Solution
Example 6.7. Specific Speed, Flowrate and Power Required by a Pump
Solution
Example 6.8. Pump Sizing of Gas-Oil
Solution
Example 6.9. Debutanizer Unit
Solution
CENTRIFUGAL PUMP EFFICIENCY
Example 6.10
Solution
Centrifugal Pump Specifications
Pump Specifications (Figures 6.43a and b)
Steps in Pump Sizing
Reciprocating Pumps
Significant Features in Reciprocating Pump Arrangements
Application
Performance
Discharge Flow Patterns
HORSEPOWER
Pump Selection
Selection Rules-of-Thumb
A CASE STUDY. Pump Simulation on a PFD
Variables Descriptions
SIMULATION ALGORITHM
Problem
Discussion
Pump Cavitation
Factors in Pump Selection
COMPRESSORS. INTRODUCTION
General Application Guide
Specification Guides
GENERAL CONSIDERATIONS FOR ANY TYPE OF COMPRESSOR FLOW CONDITIONS
Fluid Properties
Compressibility
Corrosive Nature
Moisture
Special Conditions
Specification Sheet
PERFORMANCE CONSIDERATIONS. Cooling Water to Cylinder Jackets
Heat Rejected to Water
Drivers
Ideal Pressure – Volume Relationship
Actual Compressor Diagram
DEVIATIONS FROM IDEAL GAS LAWS: COMPRESSIBILITY
Adiabatic Calculations
Charles’ Law at Constant Pressure [9]
Amonton’s Law at Constant Volume [9]
Combined Boyle’s and Charles’ Laws
Entropy Balance Method [7]
Isentropic Exponent Method [7]
COMPRESSION RATIO
Horsepower
Single Stage. Theoretical Hp
Actual Brake Horsepower, Bhp
Actual Brake Horsepower, Bhp (Alternate Correction for Compressibility)
Temperature Rise – Adiabatic
Temperature Rise – Polytropic
A CASE STUDY USING UNISIM DESIGN R460.1 SOFTWARE FOR A TWO–STAGE COMPRESSION. CASE STUDY 2
Solution
1. Starting UniSim Design Software
2. Creating a New Simulation
Saving the Simulation
3. Adding Components to the Simulation
4. Selecting a Fluids Package
5. Select the Units for the Simulation
6. Enter Simulation Environment
Accidentally Closing the PFD
Object Palette
7. Adding Material Streams
8. Specifying Material Streams
9. Adding A Compressor
Specifications
COMPRESSION PROCESS
Adiabatic
Isothermal
Polytropic
Efficiency
Head
ADIABATIC HEAD DEVELOPED PER SINGLE-STAGE WHEEL
Polytropic Head
Polytropic
Brake Horsepower
Speed of Rotation
TEMPERATURE RISE DURING COMPRESSION
Sonic or Acoustic Velocity
Example 6.12
Solution
MACH NUMBER [35]
Specific Speed
COMPRESSOR EQUATIONS IN SI UNITS
Polytropic Compressor
Adiabatic Compressor
Efficiency
Mass Flow Rate, w
Mechanical Losses
Estimating Compressor Horsepower
Multistage Compressors
Example 6.13
Solution
Multicomponent Gas Streams
Example 6.14
Solution
AFFINITY LAWS
Speed
Impeller Diameters (Similar)
Impeller Diameter (Changed)
Effect of Temperature
AFFINITY LAW PERFORMANCE
TROUBLESHOOTING OF CENTRIFUGAL AND RECIPROCATING COMPRESSORS
NOMENCLATURE
Greek Symbols
Subscripts
Nomenclature
Subscripts
Greek Symbols
References. Pumps
Bibliography
References. Compressors
Bibliography
7. Mass Transfer. INTRODUCTION
VAPOR LIQUID EQUILIBRIUM
BUBBLE POINT CALCULATION
DEW POINT CALCULATION
EQUILIBRIUM FLASH COMPOSITION
Fundamental
The Equations
The Algorithm
Nomenclature
TOWER SIZING FOR VALVE TRAYS. Introduction
The Equations
Nomenclature
Greek Letters
PACKED TOWER DESIGN. Introduction
Pressure Drop
Flooding
Operating and Design Conditions
Design Equations
Packed Towers versus Trayed Towers
Economic Trade-Offs
Nomenclature
Greek Letters
DETERMINATION OF PLATES IN FRACTIONATING COLUMNS BY THE SMOKER EQUATIONS. Introduction
The Equations
Application to a Distillation Column
Rectifying Section:
Stripping Section:
Nomenclature
MULTICOMPONENT DISTRIBUTION AND MINIMUM TRAYS IN DISTILLATION COLUMNS. Introduction
Key Components
Equations Surveyed
Fractionating Tray Stability Diagrams
Areas of Unacceptable Operation
Foaming
Flooding
Entrainment
Weeping/Dumping
Fractionation Problem Solving Considerations
Mathematical Modeling
The Fenske’s Method for Total Reflux
The Gilliland Method for Number of Equilibrium Stages
The Underwood Method
Equations for Describing Gilliland’s Graph
Kirkbride’s Feed Plate Location
Nomenclature
Greek Letters
EXAMPLES AND SOLUTIONS. Example 7.1
Solution
Example 7.2
Solution
Example 7.3
Solution
Example 7.4
Solution
Example 7.5
Solution
Tray Geometry
Example 7.6
Solution
Example 7.7
Solution
Example 7.8
Solution
References
Index
Also of Interest
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A. Kayode Coker
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