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Topic: Seperation of acetone+tetrahydrofuran mixture  (Read 14524 times)

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Offline bhaskaran

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Seperation of acetone+tetrahydrofuran mixture
« on: November 02, 2007, 11:41:05 PM »
Can anyone help me to give solution for seperation of acetone+tetrahydrofuran (THF)mixture?
Feed composition :
Acetone :80%
THF:10%
water :10%
Required purity
Acetone :Not less than 99%
THF:Not less than 0.1%
Water : Not less than 1%

Regards,
Bhaskaran

Offline ARGOS++

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Re: Seperation of acetone+tetrahydrofuran mixture
« Reply #1 on: November 10, 2007, 07:02:00 AM »

Dear Bhaskaran,

If I correct your final product requirements to: Not more then 0.1% THF; Not more then 1% Water,
I think the most effective would be:
   
Do first a “Thin-film-Short-way”-Distillation (Maybe twice)
and then dry the product with a usual chemical if still required.
   (Bp:  Aceton  56.7° Celsius;  THF   65.8° Celsius; that should be much more then enough.)

Good Luck!
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Offline bhaskaran

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Re: Seperation of acetone+tetrahydrofuran mixture
« Reply #2 on: November 14, 2007, 12:51:34 AM »
Sir,
Can u explain what is “Thin-film-Short-way”-Distillation ?

Note:
Acetone & THF forms azeotrope.

Iam not clear whether u can able to seperate this y distillation.

Please clarify.

Regards,
Bhaskaran.r

Offline ARGOS++

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Re: Seperation of acetone+tetrahydrofuran mixture
« Reply #3 on: November 16, 2007, 09:02:04 AM »

Dear Bhaskaran,

Thank you for the hint of the Azeotrope.
I didn’t find it in my quite (but not enough) large Data Base (DB), and so I though an effective Distillation must do it.
(Would you be so kind to spend my DB the azeotropic data of this mixture?)

In case of this Aceotrope and my opinion I would try a “Swing-Distillation”, depending on the volume you have. It makes most sense to me.
I don’t know if in such a try a “Thin-film-Short-way”-Distillation is required or indicated.

About “Swing-Distillation”,  you can read under the headline:
Aceotrope Breaking” (“Separation of aceotrope constituents”) on:
Of course, other methods of “Aceotrope Breaking” are also discussed therein. It’s at least a collection of Ideas.

Apropos:Thin-film-Short-way”-Distillation:
I’m searching for an English paper version, because I have it “only” in German.

Good Luck!
                   ARGOS++

Offline ashishkode

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Re: Seperation of acetone+tetrahydrofuran mixture
« Reply #4 on: December 14, 2007, 07:17:28 AM »
its a azeotrope of 92% acetone and 18% thf 

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