Reducing acetals and/or esters during ethanol separation process
    45.
    发明授权
    Reducing acetals and/or esters during ethanol separation process 有权
    在乙醇分离过程中还原缩醛和/或酯

    公开(公告)号:US08481792B2

    公开(公告)日:2013-07-09

    申请号:US13197699

    申请日:2011-08-03

    IPC分类号: C07C29/149

    摘要: To reduce acetal and/or ester concentrations when separating ethanol from a crude product in one or more distillation column, at least one of the columns is operated at a higher pressure to increase the equilibrium constant that favors hydrolysis of the acetal. The crude product may comprise ethanol, acetaldehyde, water, ethyl acetate and one or more acetals, such as diethyl acetal. The acetal and/or ester concentration may be reduced thus reducing the need to separate acetal and/or ester from the crude product.

    摘要翻译: 为了在一个或多个蒸馏塔中从粗产物中分离乙醇以减少乙缩醛和/或酯浓度,至少一个塔在更高的压力下运行以增加有利于缩醛水解的平衡常数。 粗产物可以包括乙醇,乙醛,水,乙酸乙酯和一种或多种缩醛,例如二乙基缩醛。 可以减少缩醛和/或酯浓度,因此减少了与粗产物分离缩醛和/或酯的需要。