Glacial acetic acid, also known as acetic acid, acetic acid extracted from glacial acetic acid aqueous solution, the extracting agent are mainly used by petroleum ether, ethyl ether and ethyl acetate, but are not the same extraction effect, mainly introduces the tianyi extraction. cwl - below
M centrifugal extraction machine extraction of acetic acid in different extraction solvent and extraction of the extraction effect.
in the first place on the selection of extraction agent, want to combine the following: (1) solvent in extraction agent and the original solution between the solubility is lower, the better, is advantageous for the split phase;
(2) good physical, high selectivity and the amount of extraction;
(3) low melting point, boiling point is unfavorable and exorbitant, volatile nor too good;
(4) small toxicity, low prices, fast extraction, easy to get, easy recycling.
primary extraction process:
for petroleum ether, ethyl ether and ethyl acetate extraction agent, three groups of experiments, will be the same amount of extraction solvent and the original solution according to certain proportion into the centrifugal extraction machine, according to two phase density is different, and the principle of mutual miscibility, inside the machine through the drum finished under the action of shear force caused high speed mixing and mass transfer process;
Mixture under the action of shear force produced by drum to realize two phase and separate out equipment.
Through the three groups of experiment, ethyl acetate extract acetic acid glacial acetic acid from aqueous solution is superior to the effect of ether and petroleum ether.
3 extraction process:
extraction process by level, preliminary ethyl acetate can be determined from the extract of acetic acid glacial acetic acid aqueous solution is superior to the effect of ether and petroleum ether.
A triple extraction, still need to be the same amount of extraction solvent and the original solution according to certain proportion into the centrifugal extraction machine, level of extraction, adding organic load extraction machine for secondary and tertiary extraction, after the experiment do data records.
After the completion of the three groups of experiment, found that tertiary level is obviously better than the extraction effect of extraction effect, and draw the conclusion: ethyl acetate extract acetic acid glacial acetic acid from aqueous solution is superior to the effect of ether and petroleum ether.
in the process of the experiments, the extraction of zhengzhou days. cwl -
M centrifugal extraction machine played an important role.
The equipment is my company independent research and development and production, the patent number: ZL2014205865573.
The series centrifugal extraction machine level reserved time is short, split phase quickly, high extraction efficiency, save the investment cost and solvent recycling fee, widely used in various industries of extraction separation operation.
related extraction equipment figure:
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