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    DIVIDING WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY ACRYLIC ACID AND FRACTIONAL DISTILLATION METHOD USING THE SAME
    8.
    发明公开
    DIVIDING WALL DISTILLATION COLUMN FOR PRODUCING HIGH PURITY ACRYLIC ACID AND FRACTIONAL DISTILLATION METHOD USING THE SAME 有权
    隔壁精馏塔用于生产高纯度丙烯酸酸等FRAKTIONIERUNGSDESTILLATIONSVERFAHREN DIVISION

    公开(公告)号：EP2409747A4

    公开(公告)日：2012-08-29

    申请号：EP10753734

    申请日：2010-03-19

    申请人： LG CHEMICAL LTD

    发明人： LEE SUNG KYU ,  LEE JONG KU ,  SHIN JOON HO

    IPC分类号： B01D3/32 ,  B01D3/14 ,  C10G7/00

    CPC分类号： B01D3/14 ,  B01D3/141 ,  C07C51/44 ,  C07C51/445 ,  C07C57/04

    摘要： There are provided a dividing wall distillation column for producing high-purity acrylic acid, and a fractional distillation method using the same. The dividing wall distillation column includes a condenser, a reboiler and a main column having a dividing wall. Here, the main column is divided into a column-top zone, an upper feed zone, an upper outflow zone, a lower feed zone, a lower outflow zone and a column-bottom zone. Also, a crude acrylic acid raw material (F) flows in a middle inflow plate NR1 in which the upper feed zone and the lower feed zone come in contact with each other, a low boiling point component (D) flows out from the column-top zone, a high boiling point component (B) flows out from the column-bottom zone, and a middle boiling point component (S) flows out through a middle outflow plate NR2 in which the upper outflow zone and the lower outflow zone come in contact with each other. In this case, the middle boiling point component is acrylic acid. Accordingly, since one distillation column can be used to realize the same effect as that obtained from the use of two distillation columns, the dividing wall distillation column can have an effect of reducing the costs of equipment to produce high-purity acrylic acid, as well as an energy-reducing effect, compared to a conventional process system.

    摘要翻译： 提供了用于生产高纯度丙烯酸的分隔壁蒸馏塔，并使用相同的分馏方法。 分隔壁蒸馏塔包括冷凝器，再沸器和具有分隔壁的主柱中。 这里，主塔被分成在上部进料区一个塔顶区域在上流出区域，下进料区，下出料区和一个塔底区域。 因此，一个粗丙烯酸原料（F）在一个中间流入板NR1，其中上部进料区和所述下进料区域所接触的海誓山盟，低沸点组分（D）流从列 - 流出 顶部区，一个高沸点组份（B）从塔底区域流出，中间沸点组分（S）经过一个中间流出板NR2其中上部流出区和下出料区进来流出 海誓山盟联系。 在这种情况下，中沸点组分是丙烯酸。 因此，由于一个蒸馏塔可用于实现相同的效果并从使用两个蒸馏塔的获得，所述分隔壁蒸馏塔可以具有降低设备的成本，生产出高纯度的丙烯酸的效果，以及 作为能量降低效果，相比于常规的方法系统。