Single-Stage Extraction Calculations

[@HanNguyen-nb7tf]

how do you estimate the tie line?

[@sarateles5265]

What if we dont have the tie-lines to help us making a parallel line?

[@Rahul-oy1vo]

+LearnChemE how did you draw the tie line,once you got the M(mixing point)??

[@lazerbeam3000]

it was an interpolation based off of the tie lines drawn above and below it.

[@kumarrohan6186]

same doubt how are we drawing the tie line through M. can anybody please tell ?

[@galvalan]

In the material balance determining R and E, why did you not use the solute for balance and instead use overall, carrier, and solvent balance? I tried it myself and it gave some completely different flow rates of R and E. Is there some sort of rule since the values of flow rates vary depending on which two balances are used?

[@LearnChemE]

Thanks for the comment. You should get the same answer if you use a different 3 balances (say, solvent, solute, and overall), but the overall is often used because it is a simpler equation. The other options are sometimes arbitrary. I don't know why you got a different answer.

[@galvalan]

@@LearnChemE I find this problem odd since you have to average the resulting flow rate (which in this case, the R) from two pairs of balances (overall-solvent and overall-carrier), so I tried the other pair (overall-solute). The balance should obviously reach the same answer but instead it didn't thus I asked. (see 7:29) Anyway, thanks for responding as soon as I asked. Your channel has been a great help for my review so I really appreciate your work.

[@kumarrohan6186]

how are we drawing the tie line through M. can anybody please tell ?

[@LearnChemE]

It is an estimate based on the tie lines above it.

[@divyansh1719]

@@LearnChemE ??

[@LearnChemE]

@@divyansh1719 The tie line (dotted line) is estimation in parallel with respect to the solid line in equilibrium.

[@MunifTheGreat]

Man you saved my skin. Thanks a huge lot

[@kumarrohan6186]

how are we drawing the tie line through M. can anybody please tell ?

[@jahanzaibiqbal3211]

Yes making parallel line to above lines🕳

[@syedejazhaider2996]

@@jahanzaibiqbal3211 NOT PARALLEL LINES, its through interpolation

[@alinedeboleto5082]

Hi, please, do you have any book to indicate on this subject? Thank you!

[@felix1710h]

how did u get the extract-point above the S?

[@LearnChemE]

Thanks for your question. Once you have the mixing point, you draw a tie line through that, and the raffinate and the extract are on either side of the envelope. Then you just read the values from the diagram.

[@JOKEMMM]

Thanks for the video. (Play it at 1.25% speed)