Extraction tank (
For the extraction of acetic acid
With the extraction tank (
For the extraction of acetic acid, concentrate filtered into the mixer settler, after more than extraction phase (
Which is the waste water discharge.
Extraction phase are processed first, extraction tank (at this time
Mainly on the top of the water, containing a small amount of acid, the back into the extraction tank (
Groove products for TOPO solvent and acid, mixed into the next room.
After distillation, at the bottom of the indoor produce as solvents, recycling, upper produces mainly acid, containing a small amount of water, into the next mix indoor further separation, glacial acetic acid in the bottom of the interior, out of a small amount of tar at the same time, the upper is water, containing a small amount of acid, and also the back into the extraction tank (
the main advantage of this process is extractant TOPO and water is easy to separate, and basic insoluble.
And distribution coefficient is high, good selectivity, and thus greatly save the dosage of solvent volume, equipment and energy consumption, thus is suitable for the extraction of acetic acid from dilute solution.