Purification of acetic acid from wood acetylation process
    30.
    发明授权
    Purification of acetic acid from wood acetylation process 有权
    木醋乙酰化过程中乙酸的纯化

    公开(公告)号:US07612232B2

    公开(公告)日:2009-11-03

    申请号:US12079452

    申请日:2008-03-27

    IPC分类号: C07C51/42

    CPC分类号: C07C51/46 C07C53/08

    摘要: A method of purifying acetic acid containing terpene and terpenoid impurities, includes: (a) supplying acetic acid containing terpene or terpenoid impurities and water to a distillation column; (b) azeotropically removing terpene or terpenoid impurities from the mixture of acetic acid and water supplied to the column as distillate; and (c) withdrawing a product stream from the column comprising acetic acid purified of terpene or terpenoid impurities. The method is particularly effective for purifying acetic acid recovered from a wood purification process.

    摘要翻译: 一种纯化含有萜烯和萜类杂质的乙酸的方法包括:(a)向蒸馏塔供应含有萜烯或萜类杂质和水的乙酸; (b)从作为馏出物供应到塔的乙酸和水的混合物中共沸除去萜烯或萜类杂质; 和(c)从包含纯化的萜烯或萜类杂质的乙酸的塔中取出产物流。 该方法对于从木材净化过程回收的乙酸的纯化特别有效。