公开(公告)号：US20120157709A1

公开(公告)日：2012-06-21

申请号：US13393088

申请日：2010-10-20

Applicant: Christian Schneider ,  Nikolaus Zafred ,  Andreas Heussler ,  Leo Denissen ,  Lucia Koenigsmann

Inventor： Christian Schneider ,  Nikolaus Zafred ,  Andreas Heussler ,  Leo Denissen ,  Lucia Koenigsmann

IPC: C07C263/10

CPC classification number: C07C265/14 ,  C07C209/36 ,  C07C211/46

Abstract: What is proposed is a process for preparation and distillative workup of diphenylmethane diisocyanate (MDI), proceeding from a benzene-comprising feedstream, in which, in a catalytic hydrogenation of nitrobenzene to aniline, steam is raised at two different pressure levels, which partly or completely covers the energy demand for the overall process, by using two fluidized bed reactors of identical design, of which a first fluidized bed reactor is operated with an aniline load for which the fluidized bed reactors have been designed and provides steam at a first, lower pressure level, and a second fluidized bed reactor is operated with a load lowered with respect to the first fluidized bed reactor to such an extent that the second fluidized bed reactor affords steam at the higher pressure level.

Abstract translation: 提出的是二苯基甲烷二异氰酸酯（MDI）的制备和蒸馏处理方法，其由含苯原料流进行，其中在将硝基苯催化氢化成苯胺的过程中，蒸汽以两个不同的压力水平升高， 通过使用相同设计的两个流化床反应器，完全覆盖整个过程的能量需求，其中第一流化床反应器用已经设计流化床反应器的苯胺负载操作，并且在第一，较低 压力水平，第二流化床反应器以相对于第一流化床反应器降低的负载运行至第二流化床反应器在较高压力水平下提供蒸汽的程度。

公开(公告)号：US08748665B2

公开(公告)日：2014-06-10

申请号：US13318257

申请日：2010-05-06

Applicant: Tilmann Steinmetz ,  Michael Nilles ,  Lucia Koenigsmann ,  Andreas Heussler ,  Nikolaus Zafred

Inventor： Tilmann Steinmetz ,  Michael Nilles ,  Lucia Koenigsmann ,  Andreas Heussler ,  Nikolaus Zafred

IPC: C07C209/00

CPC classification number: B01D11/043 ,  B01D3/141 ,  B01D3/40 ,  C07C209/86 ,  C07C211/46

Abstract: The invention relates to a process for obtaining at least one aromatic amine from a liquid mixture comprising water and the at least one aromatic amine by extracting with at least one nitroaromatic in an extraction column (1) to form an essentially water- comprising raffinate stream and an extract stream comprising the at least one nitroaromatic and the aromatic amine. The extraction column (1) is divided by a dividing wall (3) into two regions (5, 7), and, in the case of an amount of liquid for separation which is less than a minimum cross sectional loading of the entire extraction column (1), the liquid mixture to be separated is fed only to one of the regions (5, 7) of the extraction column (1) divided by the dividing wall (3). The invention further relates to a process for preparing an aromatic amine and to an apparatus for separating a liquid mixture comprising water and at least one aromatic amine by extracting with at least one nitroaromatic, comprising an extraction column (1).

Abstract translation: 本发明涉及一种从包含水和至少一种芳族胺的液体混合物中获得至少一种芳族胺的方法，其通过在提取塔（1）中用至少一种硝基芳族化合物萃取以形成基本上含水的萃余液流和 包含至少一种硝基芳族和芳族胺的提取物流。 萃取塔（1）由分隔壁（3）分成两个区域（5,7），并且在分离液体的量小于整个萃取塔的最小横截面负荷的情况下 （1）中，待分离的液体混合物仅被供给到由分隔壁（3）分隔的萃取塔（1）的区域（5,7）中的一个。 本发明还涉及一种制备芳族胺的方法，以及用于通过用至少一种包含萃取塔（1）的硝基芳族化合物萃取来分离包含水和至少一种芳族胺的液体混合物的装置。

公开(公告)号：US08703997B2

公开(公告)日：2014-04-22

申请号：US13393088

申请日：2010-10-20

Applicant: Christian Schneider ,  Nikolaus Zafred ,  Andreas Heussler ,  Leo Denissen ,  Lucia Koenigsmann

Inventor： Christian Schneider ,  Nikolaus Zafred ,  Andreas Heussler ,  Leo Denissen ,  Lucia Koenigsmann

IPC: C07C263/00

CPC classification number: C07C265/14 ,  C07C209/36 ,  C07C211/46

Abstract: What is proposed is a process for preparation and distillative workup of diphenylmethane diisocyanate (MDI), proceeding from a benzene-comprising feedstream, in which, in a catalytic hydrogenation of nitrobenzene to aniline, steam is raised at two different pressure levels, which partly or completely covers the energy demand for the overall process, by using two fluidized bed reactors of identical design, of which a first fluidized bed reactor is operated with an aniline load for which the fluidized bed reactors have been designed and provides steam at a first, lower pressure level, and a second fluidized bed reactor is operated with a load lowered with respect to the first fluidized bed reactor to such an extent that the second fluidized bed reactor affords steam at the higher pressure level.

Abstract translation: 提出的是二苯基甲烷二异氰酸酯（MDI）的制备和蒸馏处理方法，其由含苯原料流进行，其中在将硝基苯催化氢化成苯胺的过程中，蒸汽以两个不同的压力水平升高， 通过使用相同设计的两个流化床反应器，完全覆盖整个过程的能量需求，其中第一流化床反应器用已经设计流化床反应器的苯胺负载操作，并且在第一，较低 压力水平，第二流化床反应器以相对于第一流化床反应器降低的负载运行至第二流化床反应器在较高压力水平下提供蒸汽的程度。

公开(公告)号：US20120083626A1

公开(公告)日：2012-04-05

申请号：US13318257

申请日：2010-05-06

Applicant: Tilmann Steinmetz ,  Michael Nilles ,  Lucia Koenigsmann ,  Andreas Heussler ,  Nikolaus Zafred

Inventor： Tilmann Steinmetz ,  Michael Nilles ,  Lucia Koenigsmann ,  Andreas Heussler ,  Nikolaus Zafred

IPC: C07C209/84 ,  B01D11/04

CPC classification number: B01D11/043 ,  B01D3/141 ,  B01D3/40 ,  C07C209/86 ,  C07C211/46

Abstract: The invention relates to a process for obtaining at least one aromatic amine from a liquid mixture comprising water and the at least one aromatic amine by extracting with at least one nitroaromatic in an extraction column (1) to form an essentially water-comprising raffinate stream and an extract stream comprising the at least one nitroaromatic and the aromatic amine. The extraction column (1) is divided by a dividing wall (3) into two regions (5, 7), and, in the case of an amount of liquid for separation which is less than a minimum cross sectional loading of the entire extraction column (1), the liquid mixture to be separated is fed only to one of the regions (5, 7) of the extraction column (1) divided by the dividing wall (3). The invention further relates to a process for preparing an aromatic amine and to an apparatus for separating a liquid mixture comprising water and at least one aromatic amine by extracting with at least one nitroaromatic, comprising an extraction column (1).

Abstract translation: 本发明涉及一种从包含水和至少一种芳族胺的液体混合物中通过在提取塔（1）中用至少一种硝基芳族化合物萃取以形成基本上含水的萃余液流而获得至少一种芳族胺的方法， 包含至少一种硝基芳族和芳族胺的提取物流。 萃取塔（1）由分隔壁（3）分成两个区域（5,7），并且在分离液体的量小于整个萃取塔的最小横截面负荷的情况下 （1）中，待分离的液体混合物仅被供给到由分隔壁（3）分隔的萃取塔（1）的区域（5,7）中的一个。 本发明还涉及一种制备芳族胺的方法，以及用于通过用至少一种包含萃取塔（1）的硝基芳族化合物萃取来分离包含水和至少一种芳族胺的液体混合物的装置。