公开(公告)号：US07345173B2

公开(公告)日：2008-03-18

申请号：US10138337

申请日：2002-05-06

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

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

IPC: C07D487/00

CPC classification number: C07D487/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07271292B2

公开(公告)日：2007-09-18

申请号：US11494733

申请日：2006-07-28

Applicant: Michael Jödecke ,  Ortmund Lang ,  Gunther van Cauwenberge ,  Matthias Frauenkron

Inventor： Michael Jödecke ,  Ortmund Lang ,  Gunther van Cauwenberge ,  Matthias Frauenkron

IPC: C07C209/84 ,  C07C209/86 ,  C07D295/023

CPC classification number: C07D295/00

Abstract: 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.

公开(公告)号：US07132538B2

公开(公告)日：2006-11-07

申请号：US10829176

申请日：2004-04-22

Applicant: Ortmund Lang ,  Bernd Rumpf ,  Matthias Frauenkron ,  Marco Bosch ,  Helmut Berrsche ,  Anton Meier

Inventor： Ortmund Lang ,  Bernd Rumpf ,  Matthias Frauenkron ,  Marco Bosch ,  Helmut Berrsche ,  Anton Meier

IPC: C07D487/00

CPC classification number: C07D487/08 ,  B01D3/14 ,  B01D3/141 ,  B01D3/322 ,  B01J2219/32 ,  C07C209/84 ,  C07C211/10

Abstract: Process for purifying triethylenediamine (TEDA) by disillation, in which the fractionation is carried out in a dividing wall column.

Abstract translation: 通过蒸馏纯化三亚乙基二胺（TEDA）的方法，其中分馏在分隔壁塔中进行。

公开(公告)号：US06958397B2

公开(公告)日：2005-10-25

申请号：US10482644

申请日：2002-07-04

Applicant: Matthias Frauenkron ,  Bernd Stein ,  Ortmund Lang

Inventor： Matthias Frauenkron ,  Bernd Stein ,  Ortmund Lang

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

CPC classification number: C07D487/08 ,  B01J29/40 ,  B01J2229/42

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06552194B2

公开(公告)日：2003-04-22

申请号：US10033915

申请日：2002-01-03

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

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

IPC: C07D48708

CPC classification number: C07D487/08

Abstract: The invention relates to the preparation of pure triethylenediamine (TEDA) by evaporating TEDA from the mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250° C., passing the vapor-form TEDA into a liquid solvent, and subsequently crystallizing the TEDA out of the resultant solution.