Difference between revisions of "Liquid-liquid extraction - 2014"

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__NOTOC__
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{{ClassSidebar
{{ClassSidebarYouTube
| date = 29 October 2014
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* Schweitzer, "Handbook of Separation Techniques for Chemical Engineers", Chapter 1.9, [http://catalogue.mcmaster.ca/catalogue/Record/1156427 McMaster library]
* Schweitzer, "Handbook of Separation Techniques for Chemical Engineers", Chapter 1.9, [http://catalogue.mcmaster.ca/catalogue/Record/1156427 McMaster library]
* Seader, Henley and Roper, "Separation Process Principles", Chapter 8 in 2nd and 3rd edition [http://catalogue.mcmaster.ca/catalogue/Record/1270236 McMaster Libraries] (reserve)
* Seader, Henley and Roper, "Separation Process Principles", Chapter 8 in 2nd and 3rd edition [http://catalogue.mcmaster.ca/catalogue/Record/1270236 McMaster Libraries] (reserve)
== Resources ==
''Scroll down, if necessary, to see the resources.''


{| class="wikitable"  style="text-align: center;"
{| class="wikitable"  style="text-align: center;"
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| align="left" colspan="1"|
| align="left" colspan="1"|
Liquid liquid extraction overview
Liquid liquid extraction overview
| align="left" colspan="3"|
| align="left" colspan="1"|
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]]  '''← these are new'''
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]]   
<!-- [http://learnche.mcmaster.ca/media/2014-4M3-Class-09B.mp4 Video] -->
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-09B.mp4 Video]
  <!-- [http://learnche.mcmaster.ca/media/2014-4M3-Class-08B.mp3 Audio] -->
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-09B.mp3 Audio]
|align="left" colspan="1"|
A comprehensive article on [http://learnche.mcmaster.ca/media/mcmaster/Bailes-Hanson-Hughes--Liquid-liquid-extraction.pdf liquid-liquid extraction] which describes the various units available.
|-
| 04 November
| 10A
| align="left" colspan="1"|
Liquid liquid extraction theory and calculations
| align="left" colspan="1"|
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]] 
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-10A.mp4 Video]
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-10A.mp3 Audio]
|align="left" colspan="1"|
* The flowsheet for separating acetic acid from water using ethyl acetate solvent. This flowsheet has the mass flow rates, to help contrast it to distillation.
:[[Image:Acetic-acid-water-ethyl-acetate-flowsheet-Seader-3ed-p300.jpg|300px]] <span style="color:#8822AA">''click image to enlarge''</span>
[reference: Seader ''et al.'', p300]
|-
| 05 November
| 10B
| align="left" colspan="1"|
Liquid liquid extraction example calculations
| align="left" colspan="1"|
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]] 
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-10B.mp4 Video]  
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-10B.mp3 Audio]
|align="left" colspan="1"|
* The [[Media:Seader-ternary-example-base.pdf|ternary diagram that will be used in today's class]]. Download and print it out for practice problems.
* Here's [http://webpages.sdsmt.edu/~ddixon/CBE417_Lec_23_LLE_Draft_3-print.pdf another instructor's slides] on the same topic - sometimes a different point of view helps to understand.
|-
| 07 November
| 10C
| align="left" colspan="1"|
Liquid liquid extraction example calculations
| align="left" colspan="1"|
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]]  
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-10C.mp4 Video]
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-10C.mp3 Audio]
|align="left" colspan="1"|
|align="left" colspan="1"|
Web links shown in the class:
* [http://modularprocess.com/liquid-extraction/extraction-column-types/rdc/ Rotating disc column]
* [http://modularprocess.com/liquid-extraction/extraction-column-types/karr-columns/ Karr column]
* [http://modularprocess.com/liquid-extraction/extraction-column-types/scheibel-columns/ Scheibel column]
* [http://modularprocess.com/liquid-extraction/extraction-column-types/other-columns/ Pulsed and packed columns]
|-
|-
| 11 November
| 11A
| align="left" colspan="1"|
Liquid liquid extraction example calculations
| align="left" colspan="1"|
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]] 
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-11A.mp4 Video]
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-11A.mp3 Audio]
|align="left" colspan="1"|
These readings seem old, but they are still relevant. For example, the same principles are used in modern bioseparations.
# A [http://learnche.mcmaster.ca/media/mcmaster/Hanson--Solvent-extraction.pdf reading on solvent extraction principles]
# A general article on [http://learnche.mcmaster.ca/media/mcmaster/Reissinger-Schroter--Liquid-liquid-extractors.pdf liquid liquid extractors].
# An interesting [http://learnche.mcmaster.ca/media/mcmaster/Moore--Using-principles-of-inherent-safety-in-design-of-hydrometallurgical-solvent-extraction-plants.pdf reading on safety in liquid-liquid extraction plants]: a further reason for counter-current operations to minimize solvent use.
|-
| 12 November
| 11B
| align="left" colspan="1"|
Liquid liquid extraction example calculations
| align="left" colspan="1"|
[[Media:2014-4M3-Liquid-Liquid-Extraction.pdf|Slides]] 
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-11B.mp4 Video]
| [http://learnche.mcmaster.ca/media/2014-4M3-Class-11B.mp3 Audio]
|align="left" colspan="1"|
|}
|}


<!--
== Exercise ==
 


A stream of acetic acid and water (also called diluent) is being fed in a counter current manner at 1000 kg/hour, in order to extract the acetic acid. The feed composition is 30 wt% acetic acid, and 70 wt% water.
   
The solvent is 99% pure IPE (isopropyl ether), and contains 1% acetic acid, at an inlet flow of 2500 kg/hour.
   
We desire the exiting raffinate stream to contain 5 wt% acetic acid.
   
#  Find the number of equilibrium stages to achieve this separation (show all calculations).
#  Calculate the exiting raffinate flow, and the exiting extract flow rate.


Unfortunately, we don't have the equilibrium data, however, various samples of the 3 species were made, mixed, and when they came to equilibrium they were found to have the following compositions (each row gives the aqueous and organic phase compositions):


== Interesting applications / Enrichment materials ==
[[Image:Adsorption-example-from-VLE-raw-data.png|500px]]


These first 3 readings seem old, but they are still relevant. For example, the same principles are used in modern bioseparations.
Feel free to download and use [http://upload.wikimedia.org/wikipedia/commons/8/81/Ternary_plot_1.png this empty ternary diagram].  


# A comprehensive article on [http://learnche.mcmaster.ca/media/mcmaster/Bailes-Hanson-Hughes--Liquid-liquid-extraction.pdf  liquid-liquid extraction] which describes the various units available.
See [http://www.youtube.com/watch?v=N7MIH0_ELO0 this YouTube video] for the full solution..
# A [http://learnche.mcmaster.ca/media/mcmaster/Hanson--Solvent-extraction.pdf reading on solvent extraction principles]
<!--
# A general article on [http://learnche.mcmaster.ca/media/mcmaster/Reissinger-Schroter--Liquid-liquid-extractors.pdf liquid liquid extractors].
# An interesting [http://learnche.mcmaster.ca/media/mcmaster/Moore--Using-principles-of-inherent-safety-in-design-of-hydrometallurgical-solvent-extraction-plants.pdf reading on safety in liquid-liquid extraction plants]: a further reason for counter-current operations to minimize solvent use.
# Here's [http://webpages.sdsmt.edu/~ddixon/CBE417_Lec_23_LLE_Draft_3-print.pdf another instructor's slides] on the same topic - sometimes a different point of view helps to understand.


<!-- * The flowsheet for separating acetic acid from water using ethyl acetate solvent. This flowsheet has the mass flow rates, to help contrast it to distillation.
'''&#8592; these are new'''
:[[Image:Acetic-acid-water-ethyl-acetate-flowsheet-Seader-3ed-p300.jpg|300px]] <span style="color:#8822AA">''click to enlarge''</span> -->


-->
-->

Latest revision as of 08:57, 6 January 2017

Class date(s): 29 October 2014
Download video: Link [468 M]
Download video: Link [639 M]
Download video: Link [553 M]
Download video: Link [586 M]
Download video: Link [797 M]
Download video: Link [357 M]


References

Please use these references to read ahead, or for extra background reading on liquid-liquid extraction. In alphabetical order:

  • Ghosh, R. "Principles of Bioseparations Engineering", Chapter 7, McMaster (reserve)
  • Geankoplis, C.J. "Transport Processes and Separation Process Principles", Chapter 12 in 3rd and 4th edition, McMaster Libraries (reserve)
  • Perry's Chemical Engineers' Handbook, Chapter 15, Direct link (McMaster subscription)
  • Richardson and Harker, "Chemical Engineering, Volume 2", 5th edition, Chapter 13 ebook
  • Schweitzer, "Handbook of Separation Techniques for Chemical Engineers", Chapter 1.9, McMaster library
  • Seader, Henley and Roper, "Separation Process Principles", Chapter 8 in 2nd and 3rd edition McMaster Libraries (reserve)

Resources

Scroll down, if necessary, to see the resources.

Date Class number Topic Slides for class Video and audio files References and Notes
29 October 09B

Liquid liquid extraction overview

Slides

Video Audio

A comprehensive article on liquid-liquid extraction which describes the various units available.

04 November 10A

Liquid liquid extraction theory and calculations

Slides

Video Audio
  • The flowsheet for separating acetic acid from water using ethyl acetate solvent. This flowsheet has the mass flow rates, to help contrast it to distillation.
Acetic-acid-water-ethyl-acetate-flowsheet-Seader-3ed-p300.jpg click image to enlarge

[reference: Seader et al., p300]

05 November 10B

Liquid liquid extraction example calculations

Slides

Video Audio
07 November 10C

Liquid liquid extraction example calculations

Slides

Video Audio

Web links shown in the class:

11 November 11A

Liquid liquid extraction example calculations

Slides

Video Audio

These readings seem old, but they are still relevant. For example, the same principles are used in modern bioseparations.

  1. A reading on solvent extraction principles
  2. A general article on liquid liquid extractors.
  3. An interesting reading on safety in liquid-liquid extraction plants: a further reason for counter-current operations to minimize solvent use.
12 November 11B

Liquid liquid extraction example calculations

Slides

Video Audio

Exercise

A stream of acetic acid and water (also called diluent) is being fed in a counter current manner at 1000 kg/hour, in order to extract the acetic acid. The feed composition is 30 wt% acetic acid, and 70 wt% water.

The solvent is 99% pure IPE (isopropyl ether), and contains 1% acetic acid, at an inlet flow of 2500 kg/hour.

We desire the exiting raffinate stream to contain 5 wt% acetic acid.

  1. Find the number of equilibrium stages to achieve this separation (show all calculations).
  2. Calculate the exiting raffinate flow, and the exiting extract flow rate.

Unfortunately, we don't have the equilibrium data, however, various samples of the 3 species were made, mixed, and when they came to equilibrium they were found to have the following compositions (each row gives the aqueous and organic phase compositions):

Adsorption-example-from-VLE-raw-data.png

Feel free to download and use this empty ternary diagram.

See this YouTube video for the full solution..

Retrieved from "https://learnche.org/wiki_4M3/index.php?title=Liquid-liquid_extraction_-_2014&oldid=2063"