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边有效地抑制蒸馏塔(第二蒸馏塔)内碘化氢的缩合,而此进一步蒸馏是为净化粗醋酸,边生产醋酸。生产醋酸的过程包括醋酸收集步骤,即将至少含有醋酸,醋酸甲酯,甲基碘,水和碘化氢的挥发性组分加入第一蒸馏塔分离第一低沸点组分作为塔顶物,收集主要含有醋酸的第一液体流,和醋酸净化步
The condensation of hydrogen iodide in the distillation column (second distillation column) is effectively suppressed while the further distillation is for the production of acetic acid while purifying the crude acetic acid. The process of producing acetic acid includes an acetic acid collecting step of adding a volatile component containing at least acetic acid, methyl acetate, methyl iodide, water and hydrogen iodide to a first distillation column to separate a first low boiling point component as a overhead and collecting Mainly contains the first liquid acetic acid flow, and acetic acid purification step