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Flash Distillation in Chemical & Process Engineering
1. Introduction
Welcome to the Course! (2:40)
Content Index (4:17)
Objectives & Goals (3:22)
Why Flash Distillation (2:26)
Introduction to Distillation (8:01)
Reference Used (3:42)
Join the Groups! (1:41)
Resources & Downloads
Some Notes (Teachable) (2:55)
Contact Me (1:04)
2. Mass Transfer Review
Section 2 Introduction (2:53)
Review - Mass Transfer (0:59)
2.1 Ideal Solution & Gas, Equilibrium, Vapor & Partial Pressures, VLE
Ideal Gas Law (3:43)
Ideal Solution (5:02)
Vapor Pressure (5:29)
Partial Pressure (3:44)
Partial Pressure vs Vapor Pressure (3:42)
Task – Partial & Vapor Pressure (0:38)
What is Vapor Liquid Equilibrium for Pure substances (4:36)
Vapor Liquid Equilibrium for Binary Systems (6:55)
2.2 Volatility (Chemistry)
Volatility (Chemistry) (4:25)
Task - Volatility of Substances (1:36)
Relative Volatility (8:06)
Special Case - Constant Relative Volatility (2:37)
K-Values - An Overview (2:27)
Task – Calculate a K-Value (4:01)
2.3 Phase Diagrams (Txy, Pxy, XY)
Phase Rules & Diagrams (11:05)
Task - Prove Phase Rule for VLE systems (2:18)
Binary Diagrams (1:45)
XY Diagrams (3:41)
Task - XY Diagram (2:21)
Bubble Point (3:03)
Dew Point (2:38)
T-XY Diagram (3:26)
Analysis of T-XY Diagram (5:31)
Task - Reading T-XY Diagram (0:41)
P-XY Diagrams (5:16)
Task - Reading P-XY Diagrams (2:22)
2.4 Ideal Solution – Ideal Gas: Raoult’s Law (Vapor-Liquid)
Cases in Vapor-Liquid Equilibrium (2:43)
Case 1 - Ideal solution and Ideal Gas (2:02)
Raoult's Law (6:30)
Ex - Raoults Law Application (9:09)
Non-Ideal Solutions (4:49)
Henry's Law (2:21)
Ex - Henrys Law for Solubility (6:29)
K-Values (revisited) (2:55)
Case 2 - Real Soltion - Ideal Gas (3:33)
Case 3 - Ideal Solution and Real Gas (2:36)
Case 4 - Real Solution - Real Gases (3:17)
Cases Conclusions - Ideal Gases and Solutions vs Real Gases and Solutions (1:58)
2.5 Deviations: Azeotropes
Deviations of Ideality (4:49)
Azeotropes (3:40)
Miniumum boiling Azeotropes (4:04)
Maximum Boiling Azeotrope (2:29)
Task - Identify Azeotrope Types (1:26)
Introduction to Azeotropic Distillation (2:20)
2.6 Getting VLE Data on Aspen Plus
What is Aspen Plus (1:31)
Getting VLE Data from Aspen Plus (2:41)
Task - Graphing Txy Data with Binary Analysis Tools (6:05)
Getting VLE Data from NIST Databases (3:13)
Task - Extracting Binary Data using NIST Database (3:27)
Section 2 Closure (1:32)
3. Flash Distillation
Section 3 Introduction (3:15)
3.1 Process Technology Overview
Flash Process Technology (6:53)
Flash Diagrams & Drums (3:38)
Task - Flash Drum Identification (0:54)
Task – Recognize Horizontal Drum (1:03)
3.2 Flash Equipment
Horizontal vs. Vertical Drums (4:00)
Typical Dimensions of a Flash Drum (2:11)
Hold-up Time for Flash Drums (2:29)
Equipment & Other Auxiliaries (1:20)
The Mesh aka Demister for Flash Drums Knockout (4:47)
Drum Nozzles (3:20)
Vortex Breakers (3:53)
Foam Formation & breakers (1:39)
Straightening Vanes (1:09)
Baffles (2:33)
Control System for Flash Drums (10:07)
Task - Identify Control Systems in a Flash Drum (1:02)
3.3 Flash Operation & Design Calculations
Sequential Method for Flash System (5:30)
Operation Line in Separation Processes Technology (6:39)
Variables of Interest for Flash Distillation (9:30)
Operation Line of a Flash (FOL) (6:30)
Analysis of the Flash Operation Line - Increase in Vapor Fraction in Feed (10:54)
Animation - Flash Distillation of a Constant Relative Volatility Mixture (6:23)
Worked Example - Flash Drum (9:45)
Animation - Construct an x-y Diagram for Flash Distillation (4:25)
Ex 1. Flash Distillation - 5 Cases of Vapor Fraction in Feed (11:44)
Simulation of Ex 1 - Flash Cases Vapor Fraction from 0 to 100 (9:02)
Ex 2. Partially Flashing an Alkane Mixture (5:34)
Ex. 3 Flashing a Vapor Liquid Mix (8:30)
Animation - Adiabatic Flash Drum with Binary Liquid Feed (7:07)
Energy Balances on a Flash Drum (7:43)
Animation T-x-y and x-y Diagrams for Binary Vapor-Liquid Equilibrium (VLE) in Flash Drum (6:02)
Ex 1 - Flash Drum, Heatloads and Temperatures (12:26)
Ex 2. Flashing System Using Enthalpies and Heat duties (10:28)
Simulation of Ex 2 - Flashing Systems with Enthalpies and TXY Diagrams (8:56)
Flash Drum Sizing (12:31)
Ex 1 Flash Drum Sizing (10:43)
Resources for Flash Drum Sizing (5:07)
Task - Size the Flash Drum using External Resources for Ex 1 (1:22)
3.4 Flash Cascades
Intuitive Approach for Flash Cascades (5:18)
Flash Cascades - Analysis of Case 1 (5:34)
Simulation 01 - Flash Cascades - Case Study 1 with no Recycle (14:32)
Animation - Flash Distillation Cascade for an Acetone-Chloroform Mixture (3:53)
Flash Cascades - Analysis of Case 2 - Recycling and Removal of Heat Exchangers (3:58)
Simulation 02 - Flash Cascades - Case Study 2 with Recycle (V2) (5:13)
Animation! Flash Distillation Cascade in a Constant Relative Volatility Mixture (3:38)
Section 3 - Closure (1:02)
4. Multicomponent Flashing
Section 4 - Introduction (1:45)
4.1 Multicomponent Vapor Liquid Equilibrium
Multicomponent VLE Introduction (3:44)
Revisiting K-Values (Alkanes) (3:38)
Animation! K-value of Several Hydrocarbons versus Temperature and Pressure (4:17)
K-Value Charts of DePriester (7:13)
Animation! K-value using DePriester Chart - Temperature and Pressure (3:55)
Dew & Bubble Point Calculations in Multicomponent Systems (3:31)
Bubble Point Calculations for Multicomponent System (4:28)
Worked Example - Bubble Point Calculation for Multicimponent System using Reoults Law (3:57)
Ex 1. Bubble Point Calculation using K-Values from DePriester Charts (8:30)
Dew Point Calculation for Multicomponent Systems (5:02)
Worked Example - Dew Point Calculation using Ideal Models (3:03)
Task - Calculate the Dew Point of a Multicomponent System using K-Values and DePriester Chart (0:57)
Simulation of Bubble & Dew Points of Several Hydrocarbon Mixtures (7:54)
4.2 Multicomponent Flash Distillation
Derivation of Rachford-Rice Equation (10:18)
Rachford-Rice Equation Procedure for Multicomponent Flashing (7:52)
Worked Example - Rachford-Rice Equation for BTX (14:33)
Ex 1. Rachford Rice Equation using K-Values from DePirester Chart (6:18)
Ex 2. Rachford Rice Equation Values for high amount of Vapor (5:07)
Animation! Flash Distillation of a Mixture of Four Hydrocarbons (2:47)
Simulation of Ex 1 Multicomponent Flashing verifying Rachford Rice Equation Method (15:38)
Section 4 - Closure (0:51)
Conclusion
Course Conclusion (1:34)
Course Wrap-up (8:12)
Continue Your Training
Ex 2. Partially Flashing an Alkane Mixture
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