Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help , liquid-liquid extracction

  1. Aug 29, 2007 #1
    Hello, I've been two days trying to resolve this problem and I can't.

    I will try to translate it.

    To liquid, A and B have very similar boiling point. Because of that would be separate by liquid-liquid extraction with a dissolvent C.

    Calculate the minimum quantity of extract we have to return of the product of extract and the refined quantity to obtain a 82% A 17% B extract ( solvent free basis) and 10% A 90% B refined ( solvent free basis too).

    Feed is 35% A, 65 % B ( solvent free) and it is a saturated refined.

    Calculate the ideal number of stages at the both sides of feeding with the same feed to get the same final product when the reflux relation (on kg of extract with solvent) / kg of extract product is the double of the minimun value

    The feed is 1000kg .

    Do on equilateral triangle, rectangle triangle and solvent free coordinate graph.

    Thank you very very much.

    Attached Files:

  2. jcsd
  3. Aug 30, 2007 #2


    User Avatar
    Homework Helper
    Gold Member

    This looks like a homework problem. The forum rules are that you need to show your work before you get help. What have you attempted with this problem, and where are you stuck?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook