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制取乙酸乙酯加料順序
制取乙酸乙酯加料順序
更新时间:2026-07-30 04:50:28

  1、先加乙醇,再加濃硫酸,最後加乙酸。

  2、因為相當于稀釋濃硫酸,所以先加乙醇,後加濃硫酸,由于放出大量的熱,乙醇和乙酸都容易揮發,但乙酸的價格更貴。

  3、所以,等溫度降一下後,再加乙酸,就可以防止乙酸的揮發,從而節省原料,提高原料的轉化率。

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