Method for the rectifying separation of fluids containing (meth)acryl monomers
    5.
    发明授权
    Method for the rectifying separation of fluids containing (meth)acryl monomers 有权
    含有(甲基)丙烯酸单体的流体的精馏分离方法

    公开(公告)号:US07520964B2

    公开(公告)日:2009-04-21

    申请号:US10515639

    申请日:2003-07-02

    IPC分类号: B01D3/22 B01D3/32

    摘要: A process for rectificatively separating at least one (meth)acrylic monomer-containing fluid by feeding the fluid into a rectification column containing at least one sieve tray without a runoff segment, wherein an elementary cell is obtained from a number of centers of passages in a sieve tray, and the cell shifts regularly and repeatedly along its edges, the lengths of two shifting vectors being the lengths of the edges of the cell along which the shifting is effected; an arrangement of the centers is such that the positions of an ideal center and a real center are separated by ≦1% of half of the sum of the lengths of the two shifting vectors; and an arrangement of the passages is such that the sum of non-overlapping surface areas of an ideal passage with a real passage and vice versa is ≦1% of the surface area of the ideal passage.

    摘要翻译: 将含有至少一种(甲基)丙烯酸系单体的流体通过将流体供给至含有至少一个不具有径流段的多孔塔的精馏塔的方法,其中从多个通道中心获得基本单元, 筛板,并且单元沿其边缘规则地且重复地移动,两个移动向量的长度是实现移位的单元的边缘的长度; 中心的布置使得理想中心和实心的位置被两个移位矢量的长度之和的一半的<= 1%分开; 并且通道的布置使得理想通道的非重叠表面面积与实际通道的总和相反,<=理想通道的表面积的1%。

    Method for the continuous extraction of (meth)acrylic acid
    6.
    发明授权
    Method for the continuous extraction of (meth)acrylic acid 失效
    连续萃取(甲基)丙烯酸的方法

    公开(公告)号:US07109374B2

    公开(公告)日:2006-09-19

    申请号:US10473102

    申请日:2002-03-28

    IPC分类号: C07C51/42

    摘要: A process for the continuous recovery of (meth)acrylic acid from the reaction gas of a catalytic gas-phase oxidation comprising the following process stages is proposed: I quenching of the reaction gas by evaporative cooling using a high-boiling solvent, II separation of the (meth)acrylic acid from the quenched reaction gas by absorption into the high-boiling solvent, III separation of the solvent laden with (meth)acrylic acid by rectification into a first part-stream IIIA), which contains predominantly (meth)acrylic acid, and into a second part-stream IIIB) which contains predominantly the solvent, IV recycling of the stream IIIB) to process stage II and V distillative production of (meth)acrylic acid from stream IIIA), all liquid residual streams obtained in process stage V being recycled to process stage I.

    摘要翻译: 提出了从包括以下工艺步骤的催化气相氧化反应气体连续回收(甲基)丙烯酸的方法:I通过使用高沸点溶剂的蒸发冷却来淬灭反应气体,II分离 (甲基)丙烯酸通过吸收进入高沸点溶剂从淬灭的反应气体中分离,III分离含有(甲基)丙烯酸的溶剂通过精馏分离成第一部分流IIIA),其主要含有(甲基)丙烯酸 酸,并且进入第二部分流IIIB),其主要包含溶剂,IVB流的再循环),以处理从流IIIA进行的步骤II和V蒸馏生产(甲基)丙烯酸),所有在过程中获得的液体残余流 第五阶段被回收到处理阶段I.

    Apparatus for measuring temperatures in tubular reactors
    9.
    发明授权
    Apparatus for measuring temperatures in tubular reactors 失效
    用于测量管式反应器中的温度的装置

    公开(公告)号:US06333011B1

    公开(公告)日:2001-12-25

    申请号:US09064310

    申请日:1998-04-23

    IPC分类号: B01J806

    摘要: A 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 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: 反应器装置包括填充有固体颗粒的至少两个相同类型的管式反应器,至少一个包含温度测量单元的管状反应器,该管式反应器设计成使得固体颗粒的质量与自由 各管式反应器的横截面面积和通过横向于自由横截面积进行的惰性气体测量的压降在相应的管式反应器中是相同的。 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。

    Separation by rectification of unsaturated carboxylic acids from solvents
    10.
    发明授权
    Separation by rectification of unsaturated carboxylic acids from solvents 失效
    通过不饱和羧酸从溶剂中的精馏分离

    公开(公告)号:US5728272A

    公开(公告)日:1998-03-17

    申请号:US696193

    申请日:1996-08-13

    CPC分类号: C07C51/44 Y10S203/22

    摘要: In a process for the separation by rectification of unsaturated carboxylic acids from solvents in which the acids were absorbed after the synthesis reaction, the rectification is briefly interrupted and the rectification column is flushed with a basic solution. The interruption is carried out at regular time intervals. The basic solution used is an aqueous solution of alkali metal and/or alkaline earth metal hydroxide, preferably NaOH, KOH, Ca(OH).sub.2 or their anhydrous oxides; alkaline polar organic solvents as amines or amides can be used, too.

    摘要翻译: 在由合成反应后吸收酸的溶剂中分离不饱和羧酸的方法中,精馏被短暂中断,精馏塔用碱性溶液冲洗。 中断是以规律的时间间隔进行的。 使用的碱性溶液是碱金属和/或碱土金属氢氧化物,优选NaOH,KOH,Ca(OH)2或其无水氧化物的水溶液; 也可以使用作为胺或酰胺的碱性极性有机溶剂。