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    Process for distillatively removing piperazine from an ethylenediamine-piperazine mixture
    1.
    发明申请
    Process for distillatively removing piperazine from an ethylenediamine-piperazine mixture 有权
    从乙二胺 - 哌嗪混合物中蒸馏除去哌嗪的方法

    公开(公告)号：US20070037980A1

    公开(公告)日：2007-02-15

    申请号：US11494733

    申请日：2006-07-28

    申请人： Michael Joedecke ,  Ortmund Lang ,  Gunther Cauwenberge ,  Matthias Frauenkron

    发明人： Michael Joedecke ,  Ortmund Lang ,  Gunther Cauwenberge ,  Matthias Frauenkron

    IPC分类号： C07D241/04

    CPC分类号： C07D295/00

    摘要： The invention relates to a process for continuously, distillatively removing piperazine from an ethylenediamine-piperazine mixture under pressure at elevated temperature, by discharging the ethylenediamine at the top and the piperazine at the bottom of a distillation column. For the purpose of improving the quality of the piperazine, especially its color and color stability, the piperazine is subjected directly to circulation conveying it through an evaporator unit operated at a temperature of from about 160° C. to about 170° C. and returning it into the distillation column. After a residence time of from about 30 min to about 60 min in the circulation system, the piperazine is discharged in vapor form from a side draw in the lower section of the distillation column.

    摘要翻译： 本发明涉及一种在高温压力下从乙二胺 - 哌嗪混合物中连续蒸馏除去哌嗪的方法，通过排出顶部的乙二胺和蒸馏塔底部的哌嗪。 为了提高哌嗪的质量，特别是其颜色和颜色稳定性，哌嗪直接进行循环，将其通过在约160℃至约170℃的温度下操作的蒸发器单元输送，并返回 进入蒸馏塔。 在循环系统中约30分钟至约60分钟的停留时间后，哌嗪从蒸馏塔下部的侧馏分以蒸汽形式排出。

    Method for producing a solution of pure triethylenediamine (TEDA)
    3.
    发明授权
    Method for producing a solution of pure triethylenediamine (TEDA) 有权
    纯三亚乙基二胺（TEDA）溶液的制备方法

    公开(公告)号：US07872131B2

    公开(公告)日：2011-01-18

    申请号：US11579923

    申请日：2005-05-13

    申请人： Ortmund Lang ,  Matthias Frauenkron

    发明人： Ortmund Lang ,  Matthias Frauenkron

    IPC分类号： C07D487/08

    CPC分类号： C07D487/08

    摘要： Process for preparing a solution of pure triethylenediamine (TEDA), in which TEDA is vaporized, the gaseous TEDA is passed into a liquid solvent 1 (quench) and the TEDA is crystallized from the resulting solution and separated off (solid-liquid separation), wherein the crystalline TEDA obtained is dissolved in a solvent 2 and a stripping gas is passed through the resulting solution (stripping).

    摘要翻译： 制备TEDA蒸发的纯三亚乙基二胺（TEDA）溶液的方法，将气态TEDA送入液体溶剂1（骤冷），并将TEDA从所得溶液中结晶并分离（固液分离） 其中将获得的结晶TEDA溶解在溶剂2中，并使汽提气体通过所得溶液（汽提）。

    Method for Producing a Solution of Pure Triethylenediamine (Teda)
    5.
    发明申请
    Method for Producing a Solution of Pure Triethylenediamine (Teda) 有权
    纯三乙二胺（Teda）溶液的制备方法

    公开(公告)号：US20080021218A1

    公开(公告)日：2008-01-24

    申请号：US11579923

    申请日：2005-05-13

    申请人： Ortmund Lang ,  Matthias Frauenkron

    发明人： Ortmund Lang ,  Matthias Frauenkron

    IPC分类号： C07D487/08

    CPC分类号： C07D487/08

    摘要： Process for preparing a solution of pure triethylenediamine (TEDA), in which TEDA is vaporized, the gaseous TEDA is passed into a liquid solvent 1 (quench) and the TEDA is crystallized from the resulting solution and separated off (solid-liquid separation), wherein the crystalline TEDA obtained is dissolved in a solvent 2 and a stripping gas is passed through the resulting solution (stripping).

    摘要翻译： 制备TEDA蒸发的纯三亚乙基二胺（TEDA）溶液的方法，将气态TEDA送入液体溶剂1（骤冷），并将TEDA从所得溶液中结晶并分离（固液分离） 其中将获得的结晶TEDA溶解在溶剂2中，并使汽提气体通过所得溶液（汽提）。

    Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine
    6.
    发明授权
    Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine 有权
    在制备高纯三乙二胺时得到的母液的处理

    公开(公告)号：US07345173B2

    公开(公告)日：2008-03-18

    申请号：US10138337

    申请日：2002-05-06

    申请人： Ortmund Lang ,  Bernd Rumpf ,  Matthias Frauenkron ,  Dirk Funhoff ,  Thomas Manderbach ,  Bernd Stein

    发明人： Ortmund Lang ,  Bernd Rumpf ,  Matthias Frauenkron ,  Dirk Funhoff ,  Thomas Manderbach ,  Bernd Stein

    IPC分类号： C07D487/00

    CPC分类号： C07D487/08

    摘要： In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant which is immiscible or only slightly miscible with the solvent of the mother liquor and in which TEDA is readily soluble, and the TEDA-depleted mother liquor obtained after extraction and/or the TEDA-enriched extractant which has been used for the extraction are/is returned to the process.

    摘要翻译： 在其中TEDA蒸发并将气态TEDA进入液体溶剂并随后从其中结晶的三亚乙基二胺（TEDA）的纯化方法中，在TEDA结晶后获得的母液用萃取剂萃取，萃取剂为 不混溶或仅与母液的溶剂轻微混溶，其中TEDA易溶，并且在萃取后获得的TEDA贫化母液和/或用于萃取的富含TEDA的萃取剂返回至 的过程。

    Method of selectively synthesizing triethylenediamine
    9.
    发明授权
    Method of selectively synthesizing triethylenediamine 失效
    选择性合成三亚乙基二胺的方法

    公开(公告)号：US06958397B2

    公开(公告)日：2005-10-25

    申请号：US10482644

    申请日：2002-07-04

    申请人： Matthias Frauenkron ,  Bernd Stein ,  Ortmund Lang

    发明人： Matthias Frauenkron ,  Bernd Stein ,  Ortmund Lang

    IPC分类号： B01J29/40 ,  C07B61/00 ,  C07D487/08

    CPC分类号： C07D487/08 ,  B01J29/40 ,  B01J2229/42

    摘要： The present invention describes a process for the preparation of triethylenediamine by reacting piperazine over a zeolite catalyst which, in addition to SiO2, contains an oxide of at least one further divalent, trivalent or tetravalent metal M, wherein the zeolite has a molar Si/M ratio of >100. In particular, a zeolite of the ZSM-5 type is used. The use of the zeolites permits suppression of the undesired formation of the byproduct 2-ethylpiperazine and hence considerable simplification of the working-up, in combination with high piperazine conversions and a small excess of water.

    摘要翻译： 本发明描述了一种通过哌嗪在沸石催化剂上反应制备三亚乙基二胺的方法，该沸石催化剂除SiO 2外还含有至少另外一种二价，三价或四价金属M的氧化物，其中 沸石的Si / M摩尔比> 100。 特别地，使用ZSM-5型的沸石。 沸石的使用允许抑制副产物2-乙基哌嗪的不期望的形成，因此相当简化的加工，加上高哌嗪转化率和少量过量的水。