3 replies to this topic

[bhaskaran]

can anyone suggest how to seperate acetone+methanol mixture?

Feed composition : Acetone:81%,methanol : 16%,water :3%
Desired purity : Acetone:99%,METHANOL : 0.1%,WATER: LESS THAN 1.0%

Presently we are doing extractive distillation with water but however we cannot able to acheive the above purity.

[mostashar15]

can anyone suggest how to seperate acetone+methanol mixture?

Feed composition : Acetone:81%,methanol : 16%,water :3%
Desired purity : Acetone:99%,METHANOL : 0.1%,WATER: LESS THAN 1.0%

Presently we are doing extractive distillation with water but however we cannot able to acheive the above purity.

Looking at equilibrium curve I have generated using PROII, it tells you you have an azeotrope at a composition of 80% mol. This means you cannot get more than that separation without changing the compositon. The curve was generated at atmospheric pressure.

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[bhaskaran]

Dear mostashar,
Eventhough it is an azeotrope we can able to bring methanol content 1% by addition of water(extractive distillation).My question is how to reduce methanol content further (<0.1%)?

Thanx
Bhaskaran

[mostashar15]

Dear mostashar,
Eventhough it is an azeotrope we can able to bring methanol content 1% by addition of water(extractive distillation).My question is how to reduce methanol content further (<0.1%)?

Thanx
Bhaskaran

Have you tried to use Hysys, Aspen or PRO II to simulate the column and think of some debottlenecking.