公开(公告)号：US10981796B2

公开(公告)日：2021-04-20

申请号：US16349364

申请日：2017-12-12

Applicant: BASF SE

Inventor： Andrei-Nicolae Parvulescu ,  Ulrich Mueller ,  Regina Vogelsang ,  Nicole Sabine Bruns ,  Jan-Oliver Weidert

IPC: C01B37/00 ,  C01B39/00 ,  B01J29/70 ,  B01J29/89 ,  B01D3/06 ,  B01J29/86 ,  B01J35/10 ,  C01B39/02 ,  C01B39/06

Abstract: A process comprising hydrothermally synthesizing a titanium-containing zeolitic material having framework type MWW in the presence of an MWW template compound, obtaining a mother liquor comprising water, a first portion of the MWW template compound and a titanium-containing zeolitic material having framework type MWW comprising a second portion of the MWW template compound, separating the first portion of the MWW template compound from the mother liquor and recycling the first portion of the MWW template compound into a hydrothermal synthesis of a titanium-containing zeolitic material having framework type MWW.

公开(公告)号：US10336668B2

公开(公告)日：2019-07-02

申请号：US15529133

申请日：2015-11-18

Applicant: BASF SE

Inventor： Jan-Oliver Weidert ,  Sandra Kramp ,  Regina Benfer ,  Alexander Panchenko ,  Andreas Weickgenannt ,  Norbert Gutfrucht ,  Klaus Breuer ,  Artur Kozicki ,  Ralph Busch

IPC: C07C7/04 ,  B01D3/00 ,  B01D3/10 ,  C07C209/86 ,  C07C211/36

Abstract: A process for preparing trans-enriched MDACH, including: distilling an MDACH starting mixture in the presence of an auxiliary, which is an organic compound having a molar mass of 62 to 500 g/mol, a boiling point at least 5° C. above the boiling point of cis,cis-2,6-diamino-1-methylcyclohexane, and 2 to 4 functional groups, each of which is independently an alcohol group or a primary, secondary or tertiary amino group. The MDACH starting mixture includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, based on the total amount of MDACH present in the MDACH starting mixture. The MDACH starting mixture includes both trans and cis isomers. Trans-enriched MDACH includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, where the proportion of trans isomers in the mixture is higher than the proportion of trans isomers in the MDACH starting mixture.

公开(公告)号：US10329238B2

公开(公告)日：2019-06-25

申请号：US15776603

申请日：2016-11-30

Applicant: BASF SE

Inventor： Andreas Weickgenannt ,  Sandra Kramp ,  Jan-Oliver Weidert ,  Alexander Panchenko ,  Artur Kozicki ,  Ralph Busch

IPC: C07C209/88 ,  C07C211/36

Abstract: A method for isomerizing a starting mixture comprising 2,4-diamino-1-methylcyclohexane, 2,4-MDACH for short, 2,6-diamino-1-methylcyclohexane, 2,6-MDACH for short, or mixtures thereof, wherein the isomerization is carried out in the presence of a supported catalyst with zirconium dioxide as support and ruthenium as active metal.

公开(公告)号：US11034631B2

公开(公告)日：2021-06-15

申请号：US16475566

申请日：2018-01-24

Applicant: BASF SE

Inventor： Bernd Heida ,  Tobias Keller ,  Jan-Oliver Weidert

IPC: C07C7/08 ,  B01D3/14 ,  B01D3/34 ,  B01D11/04 ,  B01D11/00

Abstract: Process for isolating pure 1,3-butadiene from a crude C4 fraction by extractive distillation using a selective solvent, wherein (a) the crude C4 fraction is introduced into a predistillation column, a first low boiler fraction comprising C3-hydrocarbons is taken off as overhead stream, a gaseous C4 fraction is taken off as side stream and a first high boiler fraction is taken off as bottom stream, (b) the gaseous C4 fraction is brought into contact with a selective solvent in at least one extraction column, giving an overhead fraction comprising butanes and butenes and a bottom fraction comprising 1,3-butadiene and selective solvent, (c) crude 1,3-butadiene is desorbed from the bottom fraction in at least one stripping column, with a stripped selective solvent being obtained and the stripped selective solvent being recirculated to the extraction column, and (d) at least part of the crude 1-3-butadiene is fed to a pure distillation column and a second high boiler fraction is separated off and a gaseous purge stream is taken off. Gaseous purge streams from the columns which are necessary in order to keep the concentration of molecular oxygen below a predetermined concentration limit are consolidated with output streams which are in any case provided for discharging other components in the process. The recirculation of the second high boiler fraction to a lower section of the predistillation column creates a further degree of freedom in operation of the pure distillation column.

公开(公告)号：US10569192B2

公开(公告)日：2020-02-25

申请号：US15741350

申请日：2016-06-29

Applicant: BASF SE

Inventor： Norbert Asprion ,  Bernd Heida ,  Jan-Oliver Weidert ,  Ortmund Lang

IPC: B01D3/14 ,  B01D3/32 ,  B01D3/40 ,  B01D5/00

Abstract: A distillation device comprising a column for separating a feed stream into a head product stream, a bottom product stream and optionally one or more side extraction streams, having three or more cells in 5 series through which fluid flows, wherein at least the first cell is integrated into the bottom of the column, for multi-stage heating and partial evaporation of the liquid flowing through the cells with the exception of the liquid from the last cell in an evaporation stage.