Can the water in methanol be removed by azeotropic distillation?
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Can the water in methanol be removed by azeotropic distillation? Please ask an expert to help answer, thank you!
Can’t express it clearly? Is it the large amount of water in crude methanol or the trace amount of water in refined methanol? If a large amount of water is involved, ordinary distillation is sufficient, rather than azeotropic distillation. If it is trace water in pure methanol, it seems that adding a magnesium strip and heating can be used to drive the reaction out.
Dehydration can be achieved using molecular sieves. Using 3A molecular sieves to remove trace amounts of water from methanol requires much less energy compared to distillation, and it also results in lower investment costs.
Methanol has a boiling point of 82.9 degrees at absolute pressure, but if there is a small amount of water in the pure methanol, azeotropic distillation is not effective; alternative methods such as molecular sieves should be used instead!