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1.The condenser is sometimes placed above the top of the column, and the reflux pump and accumulator are omitted.
有时可将冷凝器置于精馏塔上部，省去回流泵和储槽。收藏指正
2.A controlling method of total reflux by introducing temperatures of middle part and top part in batch distillation column was set up, and isopropanol and n-propanol were used to conduct the experimental study of this operation.
摘要提出了采用塔顶和塔中温度进行控制操作状态转换的全回流间歇精馏控制方法，并以异丙醇－正丙醇为实验物系进行了实验研究。收藏指正
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