Process for vaporizing acetic acid for hydrogenation processes to produce ethanol
    2.
    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

    IPC分类号: C07C29/153 C07C29/154

    摘要: 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.

    摘要翻译: 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。

    Process for purifying ethanol
    5.
    发明授权
    Process for purifying ethanol 失效
    乙醇纯化方法

    公开(公告)号:US08680343B2

    公开(公告)日:2014-03-25

    申请号:US13197754

    申请日:2011-08-03

    IPC分类号: C07C29/149

    摘要: In one embodiment, the invention is to a process for producing ethanol. The process comprises the step of hydrogenating an acetic acid feed stream in a first reactor to form a crude ethanol product. The crude ethanol product may comprise, among other components, ethanol, acetaldehyde, and residual acetic acid. The process further comprises the step of recovering acetaldehyde from the crude ethanol product. The process further comprises the steps of feeding a first portion of the recovered acetaldehyde to the first reactor and reacting the first portion of the recovered acetaldehyde in the first reactor to form additional ethanol. In addition, the inventive process may comprise the steps of feeding a second portion of the recovered acetaldehyde to a second reactor and reacting the second portion of the recovered acetaldehyde in the second reactor to form an additional product.

    摘要翻译: 在一个实施方案中,本发明涉及一种生产乙醇的方法。 该方法包括在第一反应器中氢化乙酸进料流以形成粗乙醇产物的步骤。 粗乙醇产物可以包括乙醇,乙醛和残余乙酸等组分。 该方法还包括从粗乙醇产物中回收乙醛的步骤。 该方法还包括以下步骤:将回收的乙醛的第一部分进料到第一反应器中,并使第一部分回收的乙醛在第一反应器中反应形成另外的乙醇。 此外,本发明的方法可以包括将第二部分回收的乙醛进料到第二反应器并使第二部分回收的乙醛在第二反应器中反应以形成另外的产物的步骤。

    PROCESS FOR PURIFYING ETHANOL
    8.
    发明申请
    PROCESS FOR PURIFYING ETHANOL 失效
    净化乙醇的方法

    公开(公告)号:US20120035400A1

    公开(公告)日:2012-02-09

    申请号:US13197754

    申请日:2011-08-03

    IPC分类号: C07C27/04

    摘要: In one embodiment, the invention is to a process for producing ethanol. The process comprises the step of hydrogenating an acetic acid feed stream in a first reactor to form a crude ethanol product. The crude ethanol product may comprise, among other components, ethanol, acetaldehyde, and residual acetic acid. The process further comprises the step of recovering acetaldehyde from the crude ethanol product. The process further comprises the steps of feeding a first portion of the recovered acetaldehyde to the first reactor and reacting the first portion of the recovered acetaldehyde in the first reactor to form additional ethanol. In addition, the inventive process may comprise the steps of feeding a second portion of the recovered acetaldehyde to a second reactor and reacting the second portion of the recovered acetaldehyde in the second reactor to faun an additional product.

    摘要翻译: 在一个实施方案中,本发明涉及一种生产乙醇的方法。 该方法包括在第一反应器中氢化乙酸进料流以形成粗乙醇产物的步骤。 粗乙醇产物可以包括乙醇,乙醛和残余乙酸等组分。 该方法还包括从粗乙醇产物中回收乙醛的步骤。 该方法还包括以下步骤:将回收的乙醛的第一部分进料到第一反应器中,并使第一部分回收的乙醛在第一反应器中反应形成另外的乙醇。 此外,本发明的方法可以包括将第二部分回收的乙醛供给到第二反应器并使第二部分回收的乙醛在第二反应器中反应以产生另外的产物的步骤。