Can batch distillation separate methanol and hydrochloric acid?
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Seeking technical advice on recycling methanol and concentrating hydrochloric acid: Can batch distillation be used to separate methanol from hydrochloric acid, resulting in a 20% concentration of hydrochloric acid and a 90% concentration of methanol?
Naturally, considering intermittent distillation, it is impossible. The reason is that hydrochloric acid and methanol form an azeotropic mixture. Inseparable. So what method can be used to solve it? It’s actually very simple. First, convert it into salt; you can use waste alkalis (such as sodium hydroxide, calcium oxide) to neutralize it. After salt formation, the salt and methanol can be separated by batch distillation. It is best to use calcium oxide. This substance absorbs water and forms a salt.