The reason why alkali salts such as sodium carbonate and sodium bicarbonate make refined methanol show alkalinity
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For example... the methanol three-column distillation process, the methanol product is taken out from the top of the tower, and the water content is 0.01
It is not caused by sodium salt, it should be caused by NH4+ salt that makes methanol alkaline.
That means the sodium salt should still stay in the water in the tower kettle?
Are you coal head methanol? Or co-produce methanol?
Coal head methanol...sometimes receives purified dirty methanol
When crude methanol is distilled to obtain refined methanol, in order to remove organic acids, the methanol must be made alkaline to facilitate the removal, thereby obtaining the refined methanol product, so the purified methanol is alkaline.