Processes for preparing acetic anhydride
    151.
    发明授权
    Processes for preparing acetic anhydride 有权
    制备乙酸酐的方法

    公开(公告)号:US08653303B2

    公开(公告)日:2014-02-18

    申请号:US13359060

    申请日:2012-01-26

    IPC分类号: C07C51/54

    摘要: In one embodiment, the invention is to a process for producing acetic anhydride. The process includes at least a step of carbonylating methanol and/or a methanol derivative with carbon monoxide to form acetic acid, and contacting ketene with the acetic acid to form a crude acetic anhydride product stream and a vent stream having unreacted ketene. The process further comprises a step of directing at least a portion of the vent stream to a liquid ring vacuum compressor having a ring seal fluid comprising acetic acid The unreacted ketene in the portion of the vent stream contacts the ring seal fluid to form supplemental acetic anhydride.

    摘要翻译: 在一个实施方案中,本发明涉及一种生产乙酸酐的方法。 该方法至少包括使甲醇和/或甲醇衍生物与一氧化碳羰化以形成乙酸的步骤,并使乙烯酮与乙酸接触以形成粗乙酸酐产物流和具有未反应的乙烯酮的排放流。 该方法还包括将排气流的至少一部分引导到具有包含乙酸的环密封流体的液环真空压缩机的步骤。排气流的部分中的未反应的烯酮与环密封流体接触以形成补充的乙酸酐 。

    Esterifying Acetic Acid To Produce Ester Feed For Hydrogenolysis
    153.
    发明申请
    Esterifying Acetic Acid To Produce Ester Feed For Hydrogenolysis 有权
    酯化醋酸生产用于氢解的酯饲料

    公开(公告)号:US20130131396A1

    公开(公告)日:2013-05-23

    申请号:US13299730

    申请日:2011-11-18

    IPC分类号: C07C29/149 C07C29/84

    摘要: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying an excess molar ratio of acetic acid with an alcohol, such as ethanol, to produce the esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture.

    摘要翻译: 本文公开了通过还原酯化产物如乙酸乙酯生产醇的方法。 该方法包括将过量摩尔比的乙酸与醇如乙醇酯化以产生酯化产物。 在催化剂存在下,用氢还原酯化产物,得到包含可与粗反应混合物分离的醇,特别是乙醇的粗反应混合物。

    Integrated Esterification and Hydrogenolysis Process For Producing Ethanol
    154.
    发明申请
    Integrated Esterification and Hydrogenolysis Process For Producing Ethanol 有权
    用于生产乙醇的综合酯化和氢解方法

    公开(公告)号:US20130131394A1

    公开(公告)日:2013-05-23

    申请号:US13299841

    申请日:2011-11-18

    IPC分类号: C07C29/80

    摘要: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. The crude reaction mixture may be further purified to recover ethanol.

    摘要翻译: 本文公开了通过还原酯化产物如乙酸乙酯生产醇的方法。 该方法包括酯化乙酸和醇如乙醇以产生酯化产物。 在催化剂存在下,用氢还原酯化产物,得到包含可与粗反应混合物分离的醇,特别是乙醇的粗反应混合物。 粗反应混合物可以进一步纯化以回收乙醇。

    PURIFICATION OF ACETIC ACID FROM WOOD ACETYLATION PROCESS
    155.
    发明申请
    PURIFICATION OF ACETIC ACID FROM WOOD ACETYLATION PROCESS 有权
    从木质纤维素工艺中纯化乙酸

    公开(公告)号:US20090247788A1

    公开(公告)日:2009-10-01

    申请号:US12079452

    申请日:2008-03-27

    IPC分类号: C07C51/46

    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。

    Integrated esterification and hydrogenolysis process for producing ethanol
    159.
    发明授权
    Integrated esterification and hydrogenolysis process for producing ethanol 有权
    用于生产乙醇的综合酯化和氢解方法

    公开(公告)号:US08829249B2

    公开(公告)日:2014-09-09

    申请号:US13299841

    申请日:2011-11-18

    摘要: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. The crude reaction mixture may be further purified to recover ethanol.

    摘要翻译: 本文公开了通过还原酯化产物如乙酸乙酯生产醇的方法。 该方法包括酯化乙酸和醇如乙醇以产生酯化产物。 在催化剂存在下,用氢还原酯化产物,得到包含醇,特别是乙醇的粗反应混合物,其可与粗反应混合物分离。 粗反应混合物可以进一步纯化以回收乙醇。

    Processes for producing acrylic acids and acrylates
    160.
    发明授权
    Processes for producing acrylic acids and acrylates 失效
    制备丙烯酸和丙烯酸酯的方法

    公开(公告)号:US08658824B2

    公开(公告)日:2014-02-25

    申请号:US13420787

    申请日:2012-03-15

    IPC分类号: C07C51/44

    摘要: In one embodiment, the invention is to a process for producing an acrylate product. The process comprises the step of providing a crude product stream comprising the acrylate product, an alkylenating agent, and water. The process further comprises the step of contacting at least a portion of the crude product stream or a derivative thereof with an extraction agent mixture to form an extract stream and a raffinate stream. The extract stream comprises acrylate product and extraction agent. The raffinate stream comprises alkylenating agent and water. Preferably, the extraction agent mixture comprises at least two extraction agents.

    摘要翻译: 在一个实施方案中,本发明涉及一种生产丙烯酸酯产物的方法。 该方法包括提供包含丙烯酸酯产物,亚烷基化剂和水的粗产物流的步骤。 该方法还包括将至少一部分粗产物流或其衍生物与提取剂混合物接触以形成萃取物流和萃余液流的步骤。 提取物流包含丙烯酸酯产物和提取剂。 萃余液流包括亚烷基化剂和水。 优选地,提取剂混合物包含至少两种提取剂。