Separation of acetic acid, water, and isopropyl acetate
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Question: The solution contains 9% acetic acid, 3% water, and the remainder is isopropyl acetate. Can it be separated through ordinary distillation?
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Acetic acid and water are removed through azeotropy; their concentrations are not very high, and as long as the proportions are appropriate (i.e., according to the azeotropic composition), they should be able to be separated.
I wonder if esters and water will have an azeotrope? Let’s check the literature first
What the poster is referring to is separation. As for what requirements such separation must meet, only a preliminary separation can be carried out depending on the actual circumstances; it’s impossible to directly obtain 99% acetic acid. If 9% acetic acid is added and 99% acetic acid is obtained as a result, electrochemical corrosion at the feed inlet will be quite severe. Also, how does the poster have acetic acid with such a low concentration? What exactly is 88% acetic acid then? If conditions permit, after preliminary concentration, high-concentration acetic acid can be added for final distillation. The water present in this process can remove other impurities from the acetic acid over time, and it is sometimes essential as well.
Generally, extraction is used to solve such problems, and production costs need to be taken into consideration