Help , liquid-liquid extracction

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The discussion focuses on a liquid-liquid extraction problem involving two liquids, A and B, with similar boiling points, requiring the use of a solvent C. The goal is to calculate the minimum quantity of extract needed to achieve an 82% A and 17% B extract, as well as a 10% A and 90% B refined product, based on a feed composition of 35% A and 65% B. Additionally, the ideal number of extraction stages is to be determined, considering a specific reflux ratio. The feed quantity is specified as 1000 kg.

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daysyworld
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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.
 

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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?
 

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