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    • 1. 发明授权
    • Process for producing ultra-high purity isopropanol
    • 生产超高纯异丙醇的方法
    • US06733637B1
    • 2004-05-11
    • US09587103
    • 2000-06-02
    • Paul E. BurtonDennis J. DavorenTimothy P. DeanJohn P. MotlowCharles M. Yarbrough
    • Paul E. BurtonDennis J. DavorenTimothy P. DeanJohn P. MotlowCharles M. Yarbrough
    • B01D300
    • C07C29/80Y10S203/20C07C31/10
    • A process for producing high purity isopropyl alcohol. In one embodiment, the process includes the steps of: (a) feeding a feed stream comprising at least about 99.9 wt. % isopropyl alcohol into a separation column; (b) separating the isopropyl alcohol into an overhead stream taken overhead from the separation column and a bottoms stream taken as bottoms from the separation column; and (c) removing the high purity isopropyl alcohol at a point: (i) below where the feed stream enters the separation column but above the bottoms stream, or (ii) above where the feed stream enters the separation column but below the overhead stream. The high purity isopropyl alcohol has a metals content of less than about 1 ppb and a water content of less than about 100 ppm. Optionally, the process includes the step of passing the high purity isopropyl alcohol through an ion exchange resin after removing the high purity isopropyl alcohol from the separation column, thereby forming an ultra-high purity isopropyl alcohol that contains less than 100 ppt of any metal impurity.
    • 一种生产高纯度异丙醇的方法。 在一个实施方案中,该方法包括以下步骤:(a)进料包含至少约99.9wt。 %异丙醇进入分离柱; (b)将异丙醇分离成塔顶馏出物,塔顶馏出塔和从分离塔中取出的底部物流; 和(c)在以下点:(i)除去高纯度异丙醇,其中进料流进入分离塔但高于塔底流,或(ii)上述进料流进入分离塔但低于塔顶流 。 高纯度异丙醇的金属含量小于约1ppb,水含量低于约100ppm。 任选地,该方法包括在从分离塔中除去高纯度异丙醇之后使高纯度异丙醇通过离子交换树脂的步骤,从而形成含有小于100ppt的任何金属杂质的超高纯度异丙醇 。