Process for preparing acrylic acid
    33.
    发明授权
    Process for preparing acrylic acid 有权
    制备丙烯酸的方法

    公开(公告)号:US07566804B2

    公开(公告)日:2009-07-28

    申请号:US12020264

    申请日:2008-01-25

    IPC分类号: C07C51/42 C07C51/16

    CPC分类号: C07C51/44 C07C51/48 C07C57/04

    摘要: A process for preparing acrylic acid, in which an acrylic acid-comprising product gas mixture obtained by catalytic gas phase partial oxidation of a C3 precursor of acrylic acid is fractionally condensed in a condensation column provided with internals ascending into itself with side draw removal of crude acrylic acid and with liquid phase draw removal of acrylic acid-comprising acid water, and acrylic acid present in acid water is taken up into an extractant and then removed from the extractant and recycled into the condensation column, or taken up in aqueous metal hydroxide, or sent to further purification of the crude acrylic acid.

    摘要翻译: 制备丙烯酸的方法,其中通过丙烯酸的C3前体的催化气相部分氧化获得的含丙烯酸的产物气体混合物在冷凝塔中分级冷凝,所述内部装有自身上升的侧向抽出粗品 丙烯酸和含丙烯酸的酸性水的液相萃取和酸性水中存在的丙烯酸被吸收到萃取剂中,然后从萃取剂中除去并循环到冷凝柱中,或者被吸收在金属氢氧化物水溶液中, 或者进一步纯化粗丙烯酸。

    Temperature measurements in tubular reactors during treatment of fluid masses
    38.
    发明授权
    Temperature measurements in tubular reactors during treatment of fluid masses 有权
    管状反应器在流体质量处理过程中的温度测量

    公开(公告)号:US06657088B2

    公开(公告)日:2003-12-02

    申请号:US09988135

    申请日:2001-11-19

    IPC分类号: C07C4500

    摘要: A method for measuring the temperature of fluid masses being treated in a tubular reactor apparatus which comprises carrying out the treatment in reactor apparatus comprises at least two same-type tubular reactors which are filled with solid particles, at least one tubular reactor containing a temperature measuring unit, the tubular reactors being designed such that both the ratio of the mass of the solid particles to the free cross-sectional area of the respective tubular reactor and the pressure drop measured by an inert gas being conducted transversely to the free cross-sectional area are each substantially identical across the respective tubular reactor. The apparatus is suitable for treating fluid masses while generating or consuming thermal energy, the temperature being measured.

    摘要翻译: 用于测量在管式反应器设备中处理的流体质量的温度的方法包括在反应器设备中进行处理包括至少两个相同类型的管状反应器,其填充有固体颗粒,至少一个管式反应器,其包含温度测量 单元,管式反应器被设计成使得固体颗粒的质量与各管式反应器的自由横截面积的比率和通过惰性气体测量的压降横向于自由横截面积 在相应的管式反应器中各自基本相同。 该装置适用于在产生或消耗热能,待测温度的同时处理流体物质。