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    PROCESS FOR ISOLATING PURE BUTYL ACRYLATE FROM CRUDE BUTYL ACRYLATE BY DISTILLATION, WHERE BUTYL IS N-BUTYL OR ISOBUTYL
    1.
    发明申请
    PROCESS FOR ISOLATING PURE BUTYL ACRYLATE FROM CRUDE BUTYL ACRYLATE BY DISTILLATION, WHERE BUTYL IS N-BUTYL OR ISOBUTYL 审中-公开

    公开(公告)号：US20200095185A1

    公开(公告)日：2020-03-26

    申请号：US16472018

    申请日：2017-12-10

    Applicant: BASF SE

    Inventor： Ortmund LANG ,  Bernd METZEN ,  Claus HECHLER

    IPC: C07C67/54 ,  B01D3/14 ,  B01D3/42

    Abstract: A process for isolating pure butyl acrylate from crude butyl acrylate, which is carried out in a dividing wall column having separation-active internals and a vaporizer, and in which: a dividing wall is arranged in a longitudinal direction of the column to form an upper joint column region, a lower joint column region, an inflow section having a side feed point and an offtake section having a side offtake point; a ratio of an amount of liquid at an upper end of the dividing wall going to an enrichment section and a stripping section of the column is set in the range from 1:0.2 to 1:5; and a ratio of an amount of vapor streams at a lower end of the dividing wall going to the stripping section and the enrichment section of the column is set in a range from 1:0.5 to 1:2.0.

    CONTINUOUS METHOD FOR SEPARATING SALTS IN THE PRODUCTION OF DIMETHYLACETAMIDE
    2.
    发明申请
    CONTINUOUS METHOD FOR SEPARATING SALTS IN THE PRODUCTION OF DIMETHYLACETAMIDE 审中-公开

    公开(公告)号：US20150329477A1

    公开(公告)日：2015-11-19

    申请号：US14653094

    申请日：2013-12-18

    Applicant: BASF SE

    Inventor： Ortmund LANG ,  Norbert ASPRION ,  Axel BINDER ,  Bernd METZEN ,  Christof Wilhelm WIGBERS ,  Petr KUBANEK ,  Thomas STEINHILBER

    IPC: C07C231/24 ,  B01D3/42 ,  B01D3/06

    CPC classification number: C07C231/24 ,  B01D3/06 ,  B01D3/42 ,  C07C231/02 ,  C07C233/05

    Abstract: What is proposed is a continuous process for discharging a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates from the product mixture from the preparation of N,N-dimethylacetamide (DMAC) by reaction of methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a catalyst comprising N,N-dimethylacetamide (DMAC), methyl acetate (MeOAc), dimethylamine (DMA) and a catalyst, having the following process steps: level-regulated feeding of the product mixture as feed stream into an evaporation vessel of a forced circulation evaporator, flash evaporation of volatile components of the product mixture in the forced circulation evaporator to form a vapor phase comprising N,N-dimethylacetamide (DMAC) and precipitation of a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates, recycling of the volatile components of the product mixture obtained after the flash evaporation, removal of a vapor phase comprising N,N-dimethylacetamide (DMAC) from the evaporation vessel as output stream, concentration of the solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates in the forced circulation evaporation circuit of the forced circulation evaporator, discharge of a substream comprising the solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates from the forced circulation evaporation circuit of the forced circulation evaporator, solid/liquid separation of the discharged substream in at least one separation apparatus into a solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates and a liquid phase, recycling of the liquid phase obtained after the solid/liquid separation into the forced circulation evaporation circuit as recycle stream, wherein the recycling of the volatile components of the product mixture obtained after the flash evaporation and of the solid, salt-containing phase comprising alkali metal acetates and/or alkaline earth metal acetates into the evaporation vessel is effected via an introduction section which ends within a range from 30 cm above the level surface to 20 cm below the level surface of the fill level of the evaporation vessel.

    DISTILLATION PROCESS WITH A LAVAL NOZZLE
    3.
    发明公开
    DISTILLATION PROCESS WITH A LAVAL NOZZLE 审中-公开

    公开(公告)号：US20240226770A1

    公开(公告)日：2024-07-11

    申请号：US18561836

    申请日：2022-05-16

    Applicant: BASF SE

    Inventor： Bernd METZEN ,  Torsten MATTKE

    IPC: B01D5/00 ,  B01D3/14

    CPC classification number: B01D5/0063 ,  B01D3/14

    Abstract: The invention relates to a process for at least partially separating a light boiling component from a mixture containing said light boiling component and at least a heavy boiling component, the process comprising the steps of (a) feeding the mixture into a distillation column and withdrawing a distillate stream enriched in the light boiling component from the top section of the distillation column and withdrawing a bottom stream enriched in the heavy boiling component from the bottom section of the distillation column: and (b) transferring at least part of the distillate stream as a condensation stream to a condensation device wherein the condensation stream is at least partially condensed and recycled to the top section of the distillation column, wherein the condensation device comprises a pump and a de Laval nozzle having a throat, a converging zone before the throat and a diverging zone after the throat, the condensation stream being passed into the converging zone of the de Laval nozzle, the condensation stream being accelerated to sonic speed while passing the throat, the condensation stream being expanded in the diverging zone to supersonic speed, thereby at least part of the condensation stream being condensed to form a liquid recycle stream, and the recycle stream being recycled through the pump to the top section of the distillation column.

    PROCESS FOR ISOLATING PURE 2-ETHYLHEXYL ACRYLATE OR PURE 2-PROPYLHEPTYL ACRYLATE FROM THE CORRESPONDING CRUDE ALKYL ACRYLATE BY DISTILLATION
    4.
    发明申请
    PROCESS FOR ISOLATING PURE 2-ETHYLHEXYL ACRYLATE OR PURE 2-PROPYLHEPTYL ACRYLATE FROM THE CORRESPONDING CRUDE ALKYL ACRYLATE BY DISTILLATION 审中-公开

    公开(公告)号：US20200094160A1

    公开(公告)日：2020-03-26

    申请号：US16472054

    申请日：2017-12-11

    Applicant: BASF SE

    Inventor： Ortmund LANG ,  Bernd METZEN ,  Claus HECHLER

    IPC: B01D3/14 ,  B01D3/22 ,  B01D3/42 ,  C07C67/54

    Abstract: Process for isolating pure 2-ethylhexyl acrylate or pure 2-propylheptyl acrylate from the corresponding crude alkyl acrylate by distillation, wherein the process is carried out in a dividing wall column (1) which has separation-active internals and vaporizer (7) and in which a dividing wall (8) is arranged in the longitudinal direction of the column to form an upper joint column region (9), a lower joint column region (14), an inflow section (10, 12) having a side feed point (2) and an offtake section (11, 13) having a side offtake point (3), the column has a number of theoretical plates in the range from 10 to 60, where the number of theoretical plates of the dividing wall column (1) relates to the sum of the theoretical plates in the joint upper column region (9), the joint lower column region (14) and the inflow section (10, 12), the side feed point (2) for the corresponding crude alkyl acrylate is arranged at a theoretical plate in the region commencing at least two theoretical plates above the bottommost theoretical plate and ending at least two theoretical plates below the uppermost theoretical plate, the side offtake point (3) for the pure 2-ethylhexyl acrylate or pure 2-propylheptyl acrylate is arranged at a theoretical plate in the region commencing at least two theoretical plates above the bottommost theoretical plate and ending at least two theoretical plates below the uppermost theoretical plate and the dividing wall (8) is arranged in the column in the region commencing at least one theoretical plate above the bottommost theoretical plate and ending at least one theoretical plate below the uppermost theoretical plate, where the ratio of amount of liquid at the upper end of the dividing wall (8) going to the enrichment section (10) and the stripping section (11) of the column is set in the range from 1:0.2 to 1:5.

    DEVICE FOR CARRYING OUT MATERIAL EXCHANGE PROCESSES
    6.
    发明公开
    DEVICE FOR CARRYING OUT MATERIAL EXCHANGE PROCESSES 审中-公开

    公开(公告)号：US20230249098A1

    公开(公告)日：2023-08-10

    申请号：US18012996

    申请日：2021-06-17

    Applicant: BASF SE

    Inventor： Bernd METZEN ,  Christian KUNKELMANN ,  Ortmund LANG ,  Marvin KRAMP ,  Claus HECHLER

    IPC: B01D3/32 ,  B01D3/36 ,  B01D3/00 ,  C07C67/08 ,  C07C67/54

    CPC classification number: B01D3/322 ,  B01D3/009 ,  B01D3/36 ,  C07C67/08 ,  C07C67/54

    Abstract: The invention relates to an apparatus for carrying out mass transfer processes, comprising a column having at least two inlet pipes for introducing a gaseous phase, where separation-active internals are accommodated in the column and a column section extends from the at least two inlet pipes to the separation-active internals, in which section a coverage of a cross-sectional area of the column is less than 25%, based on the total cross-sectional area, and where the at least two inlet pipes have a height offset which corresponds to not more than three times an inlet pipe diameter and the at least two inlet pipes are at an angle (α) of from 60° to 150° to one another and have asymmetry with respect to one another. The invention further relates to a use of the apparatus and also a method for designing the apparatus.

    PROCESS FOR ISOLATING PURE TERT-BUTYL (METH)ACRYLATE FROM CRUDE TERT-BUTYL (METH)ACRYLATE BY DISTILLATION
    7.
    发明申请
    PROCESS FOR ISOLATING PURE TERT-BUTYL (METH)ACRYLATE FROM CRUDE TERT-BUTYL (METH)ACRYLATE BY DISTILLATION 审中-公开

    公开(公告)号：US20190330137A1

    公开(公告)日：2019-10-31

    申请号：US16471993

    申请日：2017-12-11

    Applicant: BASF SE

    Inventor： Ortmund LANG ,  Bernd METZEN ,  Claus HECHLER

    IPC: C07C67/54 ,  B01D3/22 ,  B01D3/14

    Abstract: Process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation, wherein the process is carried out in a dividing wall column (1) which has separation-active internals and vaporizer (7) and in which a dividing wall (8) is arranged in the longitudinal direction of the column to form an upper joint column region (9), a lower joint column region (14), an inflow section (10, 12) having a side feed point (2) and an offtake section (11, 13) having a side offtake point (3), the column has a number of theoretical plates in the range from 20 to 80, where the number of theoretical plates of the dividing wall column (1) relates to the sum of the theoretical plates in the joint upper column region (9), the joint lower column region (14) and the inflow section (10, 12), the side feed point (2) for the crude tert-butyl (meth)acrylate is arranged at a theoretical plate in the region commencing at least two theoretical plates above the bottommost theoretical plate and ending at least two theoretical plates below the uppermost theoretical plate, the side offtake point (3) for the pure tert-butyl (meth)acrylate is arranged at a theoretical plate in the region commencing at least two theoretical plates above the bottommost theoretical plate and ending at least two theoretical plates below the uppermost theoretical plate and the dividing wall (8) is arranged in the column in the region commencing at least one theoretical plate above the bottommost theoretical plate and ending at least one theoretical plate below the uppermost theoretical plate, where the ratio of amount of liquid at the upper end of the dividing wall (8) going to the enrichment section (10) and the stripping section (11) of the column is set in the range from 1:0.2 to 1:5.

    PROCESS FOR PURIFICATION OF N-BUTANOL
    9.
    发明申请
    PROCESS FOR PURIFICATION OF N-BUTANOL 有权

    公开(公告)号：US20240409484A1

    公开(公告)日：2024-12-12

    申请号：US18703342

    申请日：2022-10-17

    Applicant: BASF SE

    Inventor： Bernd METZEN ,  Rainer PAPP

    IPC: C07C29/80

    Abstract: The invention concerns a method for providing a high-purity n-butanol product stream from a crude n-butanol feed stream by fractional distillation in a dividing wall column (102) including an upper section (104), a middle section and a lower section (110), the middle section including an inflow section (106) and an offtake section (108) laterally separated from each other by a dividing wall (112) fixed in the column, the crude n-butanol feed stream being fed to the inflow section (106) and the high-purity n-butanol product stream being withdrawn from the offtake section (108), the liquid stream flowing out of the upper section (104) being collected and divided into a first liquid stream (114) and a second liquid stream (116), the first liquid stream (114) being fed to the upper region of the offtake section (108) and the second liquid stream (116) being fed to the upper region of the inflow section (106), wherein the split ratio between the mass flow rate of the first liquid stream (114) and the mass flow rate of the second liquid stream (116) is from 2:1 to 5:1.

    PROPENE RECOVERY BY SCRUBBING WITH A SOLVENT/WATER MIXTURE
    10.
    发明申请
    PROPENE RECOVERY BY SCRUBBING WITH A SOLVENT/WATER MIXTURE 有权

    公开(公告)号：US20210002241A1

    公开(公告)日：2021-01-07

    申请号：US16500313

    申请日：2018-04-13

    Applicant: BASF SE

    Inventor： Nicolai Tonio WOERZ ,  Ulrich MUELLERE ,  Andrei-Nicolae PARVULESCU ,  Dominic RIEDEL ,  Marvin KRAMP ,  Daniel URBANCZYK ,  Ulrike WEGERLE ,  Christian MUELLER ,  Bernd METZEN ,  Markus WEBER ,  Joaquim Henrique TELES

    IPC: C07D301/32 ,  C07D301/19

    Abstract: The invention relates to a process for preparing propylene oxide, comprising (i) providing a stream comprising propene, propane, hydrogen peroxide or a source of hydrogen peroxide, water, and an organic solvent; (ii) passing the liquid feed stream provided in (i) into an epoxidation zone comprising an epoxidation catalyst comprising a titanium zeolite, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propene, propane, propylene oxide, water, and the organic solvent; (iii) removing an effluent stream from the epoxidation zone, the effluent stream comprising propene, propane, propylene oxide, water, and the organic solvent; (iv) separating propene and propane from the effluent stream by distillation, comprising subjecting the effluent stream to distillation conditions in a distillation unit, obtaining a gaseous stream (S1) which is enriched in propene and propane compared to the effluent stream subjected to distillation conditions, and a liquid bottoms stream (S2) which is enriched in propylene oxide, water and organic solvent compared to the effluent stream subjected to distillation conditions; (v) separating propane from the stream (S1) in a separation zone, comprising subjecting the stream (S1) to washing conditions in a scrubber, wherein a solvent mixture comprising organic solvent and water is added as entraining agent, obtaining a bottoms stream (S3), which comprises organic solvent, water and at least 70 weight-% of the propene comprised in (S1); and a gaseous top stream (S4), which comprises at least 5 weight-% of the propane comprised in stream (S1).

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