separation of mixture isopropanol-water
separation of mixture isopropanol-water
(OP)
Hi all,
could anybody help me with a problem? i need to separate a mixture containing 40 mol% isopropanol and 60 mol% water, a purity at least of 99 mol% is desired for both . They say, it is useful to use solvent such as phenol or benzene, however, i cannot separate them.. And does anybody know something about Salt-effect distillation to separate my mixture?
Thanks a lot for all the answers.
could anybody help me with a problem? i need to separate a mixture containing 40 mol% isopropanol and 60 mol% water, a purity at least of 99 mol% is desired for both . They say, it is useful to use solvent such as phenol or benzene, however, i cannot separate them.. And does anybody know something about Salt-effect distillation to separate my mixture?
Thanks a lot for all the answers.





RE: separation of mixture isopropanol-water
RE: separation of mixture isopropanol-water
I do not know if a desicant material would work for seperating the water. I doubt it would be economical on the large scale.
What physically happens when an alcohol/water solution freezes? Does the alcohol seperate? I doubt that is really good solution either.
Several million dollars worth of centrifuges might do it?
As for the effects of salt distillation, do you mean adding salt to the solution? If so, the temperature in your sump will be slightly higher than that of pure water. Say 103-105*C or so. Your vapor temperature shouldn't increase past 100*C so long as you are not under pressure.
Sorry I can't do more than offer a few brain storm ideas that probably wouldn't work anyway.
RE: separation of mixture isopropanol-water
Which solvent is useful? And what pressure?
It is written to use benzene for separation in Separation Process Principles by Seader. So, I try this and will see what will happen. :)
thanks..
RE: separation of mixture isopropanol-water
Regards
StoneCold
RE: separation of mixture isopropanol-water
This is a typival application for an hybrid system:
Distillation up to 80% Isopropanol
+ Vapour permeation (isothermal pervaporation in a vapour phase) from 80 to 99.5%
Suppliers in membrane-guide.com:
http://w
Hope it helps,
Anne
RE: separation of mixture isopropanol-water
RE: separation of mixture isopropanol-water
but I need to separate these components with distillation.. Cyclohexane or benzene can help to form two liquid phases and they say, this is the way how to separate them from each other. But I still have a problem to design a column with decanter in HYSYS for my separation.. Does anybody know any tutorial to design an azeotropic distillation with decanter? Or something else? Thanks!