会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 140. 发明授权
    • Processes for preparing acetic anhydride
    • 制备乙酸酐的方法
    • US08653303B2
    • 2014-02-18
    • US13359060
    • 2012-01-26
    • R. Jay WarnerMelchoir Meilchen
    • R. Jay WarnerMelchoir Meilchen
    • C07C51/54
    • C07C51/56C07C51/12C07C51/573C07C53/08C07C53/12
    • 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.
    • 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 。