Flash Distillation In Chemical Process Engineering

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Tags: Chemical Engineering

Learn How to Model and Operate Flash Distillation Units in Chemical Plants

Last updated 2022-01-10 | 4.2

- Design & Operation of Flash Distillation Units
- Mass Transfer Principles
- Material & Energy Balances for Flashing Systems

What you'll learn

Design & Operation of Flash Distillation Units
Mass Transfer Principles
Material & Energy Balances for Flashing Systems
Flash Distillation Modeling & Simulation

* Requirements

* Material Balances
* Energy Balances
* Basic Physical Chemistry
* Recommended - Mass Transfer Theory
* Recommended - Transport Phenomena

Description

Introduction:

Flash Distillation is one of the most important Mass Transfer Operations used extensively in the Chemical industry. It is also one of the most important processes to learn in Mass Transfer / Separation Process Technologies as it is a fundamental unit operation.

Understanding the concept behind Flash Distillation, the vapor-liquid equilibrium and all other  mass transfer interaction will allow you to understand and model Flash Drums and Flashing Systems. Most of them can be used to "theoretically" model other unit operations such as: Distillation Columns,  Batch Distillator, Tray Columns and Packed column, etc...

We will cover:

  • REVIEW: Of Mass Transfer Basics (Equilibrium VLE Diagrams, Volatility, Raoult's Law, Azeotropes, etc..)

  • Flash Distillation Theory - Concepts and Principles

  • Application of Distillation in the Industry

  • Equipment for Flashing Systems such as Flash Drums

  • Design & Operation of Flash Drums

  • Material and Energy Balances for flash systems

  • Adiabatic and Isothermal Operation

  • Animations and Software Simulation for Flash Distillation Systems (ASPEN PLUS/HYSYS)

Theory + Solved Problem Approach:

All theory is taught and backed with exercises, solved problems, and proposed problems for homework/individual study.

At the end of the course:

You will be able to understand mass transfer mechanism and processes behind Flash Distillation.

You will be able to continue with Batch Distillation, Fractional Distillation, Continuous Distillation and further courses such as Multi-Component Distillation, Reactive Distillation and Azeotropic Distillation.

About your instructor:

I majored in Chemical Engineering with a minor in Industrial Engineering back in 2012.

I worked as a Process Design/Operation Engineer in INEOS Koln, mostly on the petrochemical area relating to naphtha treating.

There I designed and modeled several processes relating separation of isopentane/pentane mixtures, catalytic reactors and separation processes such as distillation columns, flash separation devices and transportation of tank-trucks of product.

Who this course is for:

  • Engineers
  • Chemical Engineers
  • Engineering Students
  • Process engineers
  • Petroleum Engineers
  • Petrochemical Engineers

Course content

5 sections • 144 lectures

Introduction 8 lectures

Welcome to the Course! Preview 02:40

Course Content Preview 04:17

Objectives & Goals Preview 03:22

Why Flash Distillation? Preview 02:26

General Reference: Books, Articles, Bibliography & Other Preview 03:42

Some Notes… Preview 01:49

Join the Groups! Preview 01:41

Doubts, Comment & Questions - Contact me! Preview 01:04

Mass Transfer Review 58 lectures

Introduction to Section 2 Preview 02:53

Review - Mass Transfer Preview 00:59

2.1 Ideal Solution & Gas, Equilibrium, Vapor & Partial Pressures, VLE Preview 00:08

Ideal Gas Law Preview 03:43

Ideal Solution Preview 05:02

Vapor Pressure Preview 05:29

Partial Pressure Preview 03:44

Patrial Pressure vs Vapor Pressure Preview 03:42

Task – Partial & Vapor Pressure Preview 00:38

What is Vapor Liquid Equilibrium for Pure substances Preview 04:36

Vapor Liquid Equilibrium for Binary Systems Preview 06:55

2.2 Volatility (Chemistry) Preview 00:05

Volatility (Chemistry) Preview 04:25

Task - Volatility of Substances Preview 01:36

Relative Volatility Preview 08:06

Special Case - Constant Relative Volatility Preview 02:37

K-Values Preview 02:27

Task – Calculate a K-Value Preview 04:01

2.3 Phase Diagrams (Txy, Pxy, XY) Preview 00:10

Phase Rule & Diagrams Preview 11:05

Task – Prove Phase Rule for VLE Preview 02:18

Binary Diagrams Preview 01:45

XY Diagrams Preview 03:41

Task - XY Diagram Preview 02:21

Bubble Point Preview 03:03

Dew Point Preview 02:38

T-XY Diagram Preview 03:26

Analysis of T-XY Diagram Preview 05:31

Task - Reading T-XY Diagram Preview 00:41

P-XY Diagrams Preview 05:16

Task - Reading P-XY Diagrams Preview 02:22

2.4 Ideal Solution – Ideal Gas: Raoult’s Law (Vapor-Liquid) Preview 00:12

Cases - Ideal Gas, Ideal Solution, Real Gas, Real Solution Preview 02:43

Case 1: Ideal Solution – Ideal Gas Preview 02:02

Raoult's Law Preview 06:30

Ex - Raoults Law Application Preview 09:09

Non-Ideal Solutions Preview 04:49

Henry’s Law Preview 02:21

Ex - Henrys Law for Solubility Preview 06:29

K-Values - Revisited Preview 02:55

Case 2: Real Solution – Ideal Gas Preview 03:33

Case 3: Ideal Solution – Real Gas Preview 02:36

Case 4: Real Solution – Real Gas Preview 03:17

Cases Conclusion Preview 01:58

2.5 Deviations: Azeotropes Preview 00:05

Deviations Preview 04:49

Azeotropes Preview 03:40

Miniumum boiling Azeotropes Preview 04:04

Maximum Boiling Azeotrope Preview 02:29

Task – Identify Azeotrope Type Preview 01:26

Introduction to Azeotropic Distillation Preview 02:20

2.6 Getting VLE Data on Aspen Plus Preview 00:08

What is Aspen Plus? Preview 01:31

Getting VLE Data from Aspen Plus Preview 02:41

Task - Graphing Txy Data with Binary Analysis Tools Preview 06:06

Getting VLE Data from NIST Preview 03:13

Task - Extracting Binary Data using NIST Database Preview 03:28

Section 2 Closure Preview 01:32

Flash Distillation 51 lectures

Introduction to Section 3 Preview 03:15

3.1 Process Technology Overview Preview 00:01

Flash Process Technology Preview 06:53

Flash Diagrams & Drums Preview 03:38

Task - Flash Drum Identification Preview 00:54

Task – Recognize horizontal Drum Preview 01:03

3.2 Flash Equipment Preview 00:02

Horizontal vs. Vertical Drums Preview 04:00

Typical Dimensions Preview 02:11

Hold-up Time Preview 02:29

Equipment & Other Auxiliaries Preview 01:20

The Mesh / Demister Preview 04:47

Nozzles Preview 03:20

Vortex Breakers Preview 03:53

Foam formation & deforming Preview 01:39

Straightening Vanes Preview 01:09

Baffles Preview 02:33

Control System Preview 10:07

Task – Identify Control System Preview 01:02

3.3 Flash Operation & Design Calculations Preview 00:05

Sequential Method Preview 05:30

Operation Lines in Separation Processes Technologies Preview 06:39

Flash Distillation - Introduction to Variables Preview 09:30

Operation Line of a Flash (FOL) Preview 06:30

Analysis of the Flash Operation Line - Increase in Vapor Fraction in Feed Preview 10:54

Animation! - Flash Distillation of a Constant Relative Volatility Mixture Preview 06:23

Worked Example - Flash Drum Preview 09:45

Animation! Construct an x-y Diagram for Flash Distillation Preview 04:25

Ex 1. Flash Distillation - 4 Cases of Vapor Fraction in Feed Preview 11:44

Simulation 01 - Ex 1 Flash Distillation Cases Preview 09:02

Ex 2. Partially Flashing an Alkane Mixture Preview 05:34

Ex. 3 Flashing a Vapor Liquid Mix Preview 08:30

Animation! - Adiabatic Flash Drum with Binary Liquid Feed Preview 07:07

Energy Balance on the Drum Preview 07:43

Animations! T-x-y and x-y Diagrams for Binary Vapor-Liquid Equilibrium (VLE) Preview 06:02

Ex. 1 Flash Drum, Heat-loads & Temperature Preview 12:26

Ex. 2 Flashing System + Enthalpies Preview 10:28

Simulation of Ex 2 - Flashing systems using Enthalpy Composition Diagrams Preview 08:56

Flash Drum Sizing Preview 12:31

Ex. 1 Flash Drum Sizing Preview 10:43

Flash Drum Sizing - Resources Preview 05:07

Task – Size a Horizontal Flash Drum using Resources Preview 01:22

3.4 Flash Cascades Preview 00:10

Flash Cascade - Intuitive Approach Preview 05:18

Analysis of Case 1 - Flash Cascades Preview 05:34

Simulation - Flash Cascade Case 1 Preview 14:32

Animation! Flash Distillation Cascade for an Acetone-Chloroform Mixture Preview 03:53

Analysis of Case 2 - Flash Cascades Preview 03:58

Simulation - Case 2 - Flashing System with Recycling Preview 05:13

Animation! Flash Distillation Cascade in a Constant Relative Volatility Mixture Preview 03:38

Section 3 - Conclusion Preview 01:02

Multicomponent Flashing 24 lectures

Introduction to Section 4 Preview 01:45

4.1 Multicomponent VLE Preview 00:03

Multicomponent VLE Preview 03:44

Revisiting K-Values (Alkanes) Preview 03:38

Animation! K-value of Several Hydrocarbons versus Temperature and Pressure Preview 04:17

K-Value Chart - DePriester Preview 07:13

Animation! K-value using DePriester Chart - Temperature and Pressure Preview 03:55

Dew & Bubble Point Calculation Preview 03:31

Bubble Point Calculation Preview 04:28

Worked Example - Bubble Point Calculation Preview 03:57

Ex 1. Bubble Point Calculation Preview 08:30

Dew Point Calculation Preview 05:02

Worked Example - Dew Point Calculation Preview 03:03

Task – Dew Point Calculation Preview 00:57

Simulation - Bubble & Dew Point of Several Mixtures Preview 07:54

4.2 Multicomponent Flash Distillation Preview 00:03

Derivation of Rachford-Rice Equation Preview 10:18

Rachford-Rice Procedure Preview 07:52

Worked Example - Rachford-Rice Equation for BTX Preview 14:33

Ex 1. Rachford-Rice Flashing Preview 06:18

Ex 2. Rachford-Rice Flashing Preview 05:07

Animation! Flash Distillation of a Mixture of Four Hydrocarbons Preview 02:47

Simulation - Multicomponent Flashing of Ex 1. Preview 15:38

Section 4 - Closure Preview 00:51

Conclusion 3 lectures

Closure Preview 01:34

Course Wrap-Up Preview 08:12

Bonus Lecture! Preview 02:23