Processes for producing anhydrous ethanol compositions
    34.
    发明授权
    Processes for producing anhydrous ethanol compositions 有权
    无水乙醇组合物的制备方法

    公开(公告)号:US08541633B2

    公开(公告)日:2013-09-24

    申请号:US12903756

    申请日:2010-10-13

    IPC分类号: C07C29/149

    摘要: In one embodiment, the present invention is to a process for producing a anhydrous ethanol composition comprising hydrogenating acetic acid in the presence of a catalyst to form a crude ethanol product; separating in a first column at least a portion of the crude ethanol product into a first distillate comprising ethanol, water and ethyl acetate, and a first residue comprising acetic acid; separating in a second column at least a portion of the first distillate into a second distillate comprising ethyl acetate and a second residue comprising ethanol and water; separating in a third column at least a portion of the second residue into a third distillate comprising ethanol and residual water and a third residue comprising separated water; and dehydrating at least a portion of the third distillate to form the anhydrous ethanol composition. The anhydrous ethanol composition, as formed, comprises less than 1 wt. % water, based on the total weight of the anhydrous ethanol composition.

    摘要翻译: 在一个实施方案中,本发明涉及一种生产无水乙醇组合物的方法,包括在催化剂存在下使乙酸氢化以形成粗乙醇产物; 在第一塔中将至少一部分粗乙醇产物分离成包含乙醇,水和乙酸乙酯的第一馏出物和包含乙酸的第一残余物; 在第二塔中将第一馏出物的至少一部分分离成包含乙酸乙酯和含有乙醇和水的第二残余物的第二馏出物; 在第三塔中将第二残留物的至少一部分分离成包含乙醇和残余水的第三馏出物和包含分离的水的第三残余物; 并使至少一部分第三馏出物脱水形成无水乙醇组合物。 形成的无水乙醇组合物包含小于1wt。 %水,基于无水乙醇组合物的总重量。