Process for vaporizing acetic acid for hydrogenation processes to produce ethanol
    5.
    发明授权
    Process for vaporizing acetic acid for hydrogenation processes to produce ethanol 有权
    蒸发乙酸进行氢化处理以生产乙醇的方法

    公开(公告)号:US08552225B2

    公开(公告)日:2013-10-08

    申请号:US12974982

    申请日:2010-12-21

    Abstract: Vaporizing acetic acid in the presence of hydrogen to provide a vapor feed stream for a hydrogenation process that produces ethanol. The vaporizer forms a vapor feed stream and a blowdown stream having a weight ratio of the vapor feed stream to the blowdown stream of at least 2:1. The acetic acid may vaporized at a temperature below acetic acid's boiling point at the operating pressure of the reactor. The hydrogenation process produces a crude ethanol product and ethanol is separated from the crude product. In addition, at least one recycle stream comprising acetic acid and less than 1.0 wt. % compounds having a boiling point higher than acetic acid, may also be separated. The recycle streams may be introduced to the vaporizer along with acetic acid to form the vapor feed stream.

    Abstract translation: 在氢存在下蒸发乙酸以提供用于产生乙醇的氢化方法的蒸气进料流。 蒸发器形成蒸气进料流和排气流,其中蒸气进料流与排污流的重量比至少为2:1。 在反应器的操作压力下,乙酸可以在低于乙酸沸点的温度下蒸发。 氢化过程产生粗乙醇产物,并从粗产物中分离出乙醇。 另外,至少一个包含乙酸和小于1.0wt。 沸点高于乙酸的%化合物也可以分离。 循环物流可以与乙酸一起引入蒸发器以形成蒸汽进料流。

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