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    PROCESS FOR PREPARING DIOXOLANE
    2.
    发明申请
    PROCESS FOR PREPARING DIOXOLANE 有权

    公开(公告)号：US20210403447A1

    公开(公告)日：2021-12-30

    申请号：US17056741

    申请日：2019-05-08

    Applicant: BASF SE ,  Kolon Plastics Inc.

    Inventor： Thomas HEITZ ,  Marvin KRAMP ,  Manfred HEILIG ,  HyunSoo CHANG ,  JongMoon KIM ,  In Gi CHO

    IPC: C07D317/12

    Abstract: The present invention relates to a process for preparing dioxolane by reacting ethylene glycol with an aqueous solution of formaldehyde in the presence of an acid catalyst. The raw product comprising water, dioxolane and methanol is fed to a phase separation unit (20) wherein an organic extracting agent is present. An organic fraction stream from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit. An aqueous fraction stream from the phase separation unit is transferred to a waste water column (40), withdrawing a waste water stream from the bottom of the waste water column, withdrawing a side stream (42) from a stage between the feed stage and the reflux stage of the waste water column and recycling this stream (42) to the phase separation unit, and withdrawing a distillate stream (43) containing methanol from the waste water column.

    PROPENE RECOVERY BY SCRUBBING WITH A SOLVENT/WATER MIXTURE
    4.
    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).

    DEVICE AND METHOD FOR SEPARATING LIQUID DROPLETS FROM A GAS STREAM BY MEANS OF A CENTRIFUGAL MIST ELIMINATOR
    6.
    发明公开
    DEVICE AND METHOD FOR SEPARATING LIQUID DROPLETS FROM A GAS STREAM BY MEANS OF A CENTRIFUGAL MIST ELIMINATOR 审中-公开

    公开(公告)号：US20240198263A1

    公开(公告)日：2024-06-20

    申请号：US18288043

    申请日：2022-04-19

    Applicant: BASF SE

    Inventor： Yunfei ZHOU ,  Ortmund LANG ,  Matthias Wilhelm MEIER ,  Cornelis Hendricus DE RUITER ,  Marvin KRAMP ,  Gregor GRACKIEWICZ ,  Josef MACHT ,  Markus GITTER ,  Claus HECHLER

    IPC: B01D45/16 ,  B01D47/06

    CPC classification number: B01D45/16 ,  B01D47/06

    Abstract: The invention relates to a centrifugal droplet separator for separating liquid droplets out of a gas stream, comprising a shell (1) having a circular cross section and a vertical longitudinal axis (11), an upper hood (2) that bounds the shell (1) at the top and has a gas exit port (7) for the gas stream cleaned in the centrifugal droplet separator, a drip plate (8) disposed beneath the gas exit port (7), a lower hood (10) that bounds the shell (1) at the bottom and has a liquid exit port (4) for removal of the deposited liquid droplets, and an inlet (3) that opens tangentially into the shell (1) for supply of the gas stream,



    wherein
    there are at least two nozzles (9) for feeding a stabilizer liquid into the interior of the centrifugal droplet separator, the respective nozzle outlet (15) of which is disposed between the tangential inlet (3) and the drip plate (8) in vertical direction, where the main spraying direction (12) of the nozzles (9) is directed upward at an internal angle of 0 to 60° relative to the vertical longitudinal axis (11).




    The invention additionally also relates to a method of separating liquid droplets out of a gas stream in such a centrifugal droplet separator.

    CONTINUOUS METHOD FOR OBTAINING 2-ETHYLHEXYL ACRYLATE
    7.
    发明公开
    CONTINUOUS METHOD FOR OBTAINING 2-ETHYLHEXYL ACRYLATE 审中-公开

    公开(公告)号：US20240067596A1

    公开(公告)日：2024-02-29

    申请号：US18273790

    申请日：2022-01-24

    Applicant: BASF SE

    Inventor： Ortmund LANG ,  Claus HECHLER ,  Cornelis DE RUITER ,  Marvin KRAMP ,  Dominik HERBRECHT

    IPC: C07C69/54 ,  B01D1/00

    CPC classification number: C07C69/54 ,  B01D1/0088

    Abstract: The present invention relates to a continuous process for obtaining 2-ethylhexyl acrylate (2-EHA) from a mixture (1) that is liquid under an absolute pressure in the range from 0.5 to 100 bar and has a temperature in the range from 0 to 300° C., comprising 2-EHA, at least one high boiler, at least one homogeneous catalyst, and at least one low boiler, wherein the mixture (1) is depressurized by a pressure-maintenance device (3) to an absolute pressure level in the range from 0.1 to 10 bar, wherein the resulting two-phase gas/liquid mixture (16) is continuously supplied to a helical-tube evaporator (4) in which, at a temperature in the range from 50 to 300° C., the 2-EHA content of the liquid phase of the two-phase gas/liquid mixture is reduced by partial evaporation, this being accompanied by a parallel increase in the 2-EHA content of the gas phase of the two-phase gas/liquid mixture, and the two phases are discharged in the form of a resulting two-phase gas/liquid output stream (17).

    DEVICE FOR CARRYING OUT MATERIAL EXCHANGE PROCESSES
    9.
    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 PREPARING DIOXOLANE
    10.
    发明申请
    PROCESS FOR PREPARING DIOXOLANE 有权

    公开(公告)号：US20220073490A1

    公开(公告)日：2022-03-10

    申请号：US17056750

    申请日：2019-05-08

    Applicant: BASF SE ,  Kolon Plastics Inc.

    Inventor： Thomas HEITZ ,  Marvin KRAMP ,  Manfred HEILIG ,  HyunSoo CHANG ,  JongMoon KIM ,  In Gi CHO

    IPC: C07D317/12

    Abstract: The present invention relates to a process for preparing dioxolane by reacting ethylene glycol with an aqueous solution of formaldehyde in the presence of an acid catalyst. The raw product comprising water, dioxolane and methanol is fed to a phase separation unit (20) wherein an organic extracting agent is present. An organic fraction stream from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit. An aqueous fraction stream from the phase separation unit is transferred to a waste water column (40), withdrawing a waste water stream from the bottom of the waste water column, recycling a distillate stream (42) from the waste water column to the phase separation unit, and withdrawing a side stream (43) containing methanol from a stage below the feed stage of the waste water column.

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