2 replies to this topic

[Has2riasat]

Hi all

 

i have been tasked with designing a distillation column to remove water from the working solution in the anthraquinone process. Now the boiling points between water and the other components is fairly significant (the closest boiling point is 50 C away from water. The amount of water i am removing is less than 1% of the initial mixture.

Is a distillation column the right piece of equipment for the job ?

[Pilesar]

With a large difference in boiling points, distillation sounds like a reasonable approach! See if you can get distillation to do the job. Once you have a working process, then maybe alternatives could be investigated. It is difficult to get a 100% separation with distillation, so there may need to be additional processing steps depending upon the specifications required.

[breizh]

hi,

Let you try Liquid-liquid extraction to separate the Organics from Water followed by a Distillation to recover the solvent from Organics.

A solvent like IPE or similar may /should do the job (based on industrial experience to recover diphenols).

IPE =isopropyl ether or Di isopropyl ether 

Note: What about crystallization process or convert the water to ice and separate from organics by filtration.?

Good luck 
Breizh