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    PROCESS FOR PREPARING AN AROMATIC POLYAMINE MIXTURE
    11.
    发明申请
    PROCESS FOR PREPARING AN AROMATIC POLYAMINE MIXTURE 审中-公开

    公开(公告)号：US20200339501A1

    公开(公告)日：2020-10-29

    申请号：US16071309

    申请日：2017-01-12

    Applicant: BASF SE

    Inventor： Viktor LADNAK ,  Silvia TAURO ,  Kerstin HEINEN ,  Kal THIELE ,  Klause-Peter METZNER ,  Torsten MATTKE

    IPC: C07C209/78 ,  C07C209/88 ,  B01D3/14

    Abstract: A process for preparing an aromatic polyamine mixture including 4,4′-methylenedi(phenylamine) and higher homologues of MDA is provided. The process includes steps of (i) reaction of aniline with formaldehyde by means of an acid catalyst to form a crude product mixture (I), (ii) neutralization of the crude product mixture (I) and removal of the salts formed; (iii) isolation of aniline; (iv) distillation of the resulting crude product mixture so as to separate off (iv-1) a mixture (II) of MDA isomers (II-1) containing from 8 to 20% by weight of 4,4′-methylenedi(phenylamine) and not more than 0.3% by weight of secondary components (II-2) and (iv-2) a low boiler mixture of at least 55% by weight of secondary components (II-2) and MDA isomers (II-1); and (v) recirculation of the mixture (II).

    PROCESS FOR PREPARING AT LEAST ONE POLYISOCYANATE
    15.
    发明申请
    PROCESS FOR PREPARING AT LEAST ONE POLYISOCYANATE 有权

    公开(公告)号：US20240368335A1

    公开(公告)日：2024-11-07

    申请号：US18562515

    申请日：2022-05-24

    Applicant: BASF SE

    Inventor： Jens FERBITZ ,  Jan Pablo JOSCH ,  Kai THIELE ,  Torsten MATTKE

    IPC: C08G18/65 ,  C08G18/38

    Abstract: The present invention relates to a process for preparing at least one polyisocyanate R(—NCO)x, the process comprising preparing a mixture R1 comprising at least one polyamine R(—NH2)x, with x=2 or more, in a first reaction zone Z1; passing at least a portion P1 of the mixture R1, P1 comprising R(—NH2)x, into a storing device D1 and storing P1 in D1 for a period of time Δt1; removing, after storing for Δt1, at least a portion P2 of P1, P2 comprising R(—NH2)x, from D1; passing P2 into a reaction zone Z2; and reacting, in Z2, R(—NH2)x comprised in P2 with phosgene, obtaining a mixture R2 comprising the at least one polyisocyanate R(—NCO)x; wherein Δt1 is in the range of from 1 minute to 7 d.

    METHOD FOR PRODUCING PHOSGENE
    16.
    发明公开
    METHOD FOR PRODUCING PHOSGENE 审中-公开

    公开(公告)号：US20240317590A1

    公开(公告)日：2024-09-26

    申请号：US18580641

    申请日：2022-07-13

    Applicant: BASF SE

    Inventor： Jan Pablo JOSCH ,  Stefan ENGELS ,  Gerhard OLBERT ,  Torsten MATTKE

    IPC: C01B32/80 ,  B01J21/18 ,  B01J37/08

    CPC classification number: C01B32/80 ,  B01J21/18 ,  B01J37/08

    Abstract: The invention relates to a process for producing phosgene by conversion of chlorine and CO over an activated carbon catalyst, wherein the activated carbon catalyst is dried by reducing the water content, where the drying comprises the following steps:



    a) contacting the catalyst with an inert gas stream
    b) determining the residual moisture content of the catalyst by determining the moisture content in the offgas stream
    c) ending the drying process after attainment of the desired moisture content in the offgas stream by switching from the inert gas to the reaction gases and optionally
    d) heating up the catalyst bed and/or the inert gas during the drying process.

    METHOD OF SEPARATING PHOSGENE AND HYDROGEN CHLORIDE
    17.
    发明公开
    METHOD OF SEPARATING PHOSGENE AND HYDROGEN CHLORIDE 审中-公开

    公开(公告)号：US20240300817A1

    公开(公告)日：2024-09-12

    申请号：US18277415

    申请日：2022-02-10

    Applicant: BASF SE

    Inventor： Torsten MATTKE ,  Kai THIELE ,  Jens FERBITZ ,  Peter VAN DEN ABEEL ,  Hans-Juergen PALLASCH

    IPC: C01B7/07 ,  B01D53/00 ,  C01B32/80 ,  C07C263/20

    CPC classification number: C01B7/0712 ,  B01D53/002 ,  C01B7/0731 ,  C01B32/80 ,  C07C263/20 ,  B01D2256/26 ,  B01D2257/2064

    Abstract: A process of separating phosgene and hydrogen chloride, comprises: conveying a mixed stream containing hydrogen chloride and phosgene into a distillation column; withdrawing from the distillation column a bottom stream containing phosgene; withdrawing a top stream containing hydrogen chloride; compressing at least a portion of the top stream and at least partially condensing the compressed top stream to form a liquid stream, decompressing at least a portion of the liquid stream to form a cooled liquid stream and a cooled gas stream; and recycling the cooled liquid stream to the top of the distillation column as a reflux; the process additionally comprising temporarily introducing an absorbing solvent into the distillation column, in particular during starting-up and/or shutting-down of the process. The process allows for safe operation even when hydrogen chloride production only gradually begins or decreases, without the necessity of storing hydrogen chloride.

    PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE
    18.
    发明公开
    PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE 审中-公开

    公开(公告)号：US20240228279A9

    公开(公告)日：2024-07-11

    申请号：US17769400

    申请日：2020-10-16

    Applicant: BASF SE ,  UNIVERSITY OF CALIFORNIA, OAKLAND

    Inventor： Klemens MASSONNE ,  Hendrik DE WINNE ,  Torsten MATTKE ,  Ahmad DEHESTANI ,  Sabine WEIGUNY ,  Stephan ZUEND ,  Eric Wesley MCFARLAND ,  Behzad TANGEYSH ,  Shizhao SU ,  Sabine FRISCHHUT

    IPC: C01B7/04 ,  B01J10/00 ,  B01J19/02 ,  B01J19/24 ,  B01J27/08

    CPC classification number: C01B7/04 ,  B01J10/005 ,  B01J19/02 ,  B01J19/2465 ,  B01J27/08 ,  B01J2219/0263

    Abstract: The invention relates to a process for preparation of chlorine from hydrogen chloride comprising circulating a liquid melt comprising copper ions Cun+ with n being a number in the range from 1 to 2, alkali cations and chloride ions Cl in a reactor system comprising three bubble lift reactors I, II and III, each comprising a reaction zone i, ii and iii respectively, wherein: ⋅(a) in the reaction zone i of the first bubble lift reactor I, a liquid melt comprising copper ions Cun+, alkali cations and chloride ions Cl— is contacted with oxygen at a temperature in the range from 395 to 405° C. so that the molar ratio Cun+:Cu+ in the liquid melt increases, obtaining a liquid melt having an increased molar ratio Cun+:Cu+ ⋅(b) the liquid melt obtained in (a) is circulated to the reaction zone ii in the second bubble lift reactor II, where the liquid melt is contacted with hydrogen chloride at a temperature in the range from 395 to 405° C. so that water is formed, obtaining a liquid melt being enriched in chloride anions (CI-) compared to the liquid melt obtained according to (a); ⋅(c) circulating the liquid melt obtained in (b) to the reaction zone iii in the third bubble lift reactor III, which is operated at a temperature in the range from 420 to 430° C. so that chlorine (Cl2) is formed, wherein Cl2 is removed from the reaction zone iii and the third bubble lift reactor III respectively in gaseous form, leaving a liquid melt depleted of Cl-compared to the liquid melt obtained according to (b). The invention further relates to a reactor system comprising three bubble lift reactors I, II and III.

    PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE
    20.
    发明公开
    PROCESS FOR PREPARATION OF CHLORINE FROM HYDROGEN CHLORIDE 审中-公开

    公开(公告)号：US20240132350A1

    公开(公告)日：2024-04-25

    申请号：US17769400

    申请日：2020-10-15

    Applicant: BASF SE ,  UNIVERSITY OF CALIFORNIA, OAKLAND

    Inventor： Klemens MASSONNE ,  Hendrik DE WINNE ,  Torsten MATTKE ,  Ahmad DEHESTANI ,  Sabine WEIGUNY ,  Stephan ZUEND ,  Eric Wesley MCFARLAND ,  Behzad TANGEYSH ,  Shizhao SU ,  Sabine FRISCHHUT

    IPC: C01B7/04 ,  B01J10/00 ,  B01J19/02 ,  B01J19/24 ,  B01J27/08

    CPC classification number: C01B7/04 ,  B01J10/005 ,  B01J19/02 ,  B01J19/2465 ,  B01J27/08 ,  B01J2219/0263

    Abstract: The invention relates to a process for preparation of chlorine from hydrogen chloride comprising circulating a liquid melt comprising copper ions Cun+ with n being a number in the range from 1 to 2, alkali cations and chloride ions Cl in a reactor system comprising three bubble lift reactors I, II and III, each comprising a reaction zone i, ii and iii respectively, wherein: ⋅(a) in the reaction zone i of the first bubble lift reactor I, a liquid melt comprising copper ions Cun+, alkali cations and chloride ions Cl— is contacted with oxygen at a temperature in the range from 395 to 405° C. so that the molar ratio Cun+:Cu+ in the liquid melt increases, obtaining a liquid melt having an increased molar ratio Cun+:Cu+ ⋅(b) the liquid melt obtained in (a) is circulated to the reaction zone ii in the second bubble lift reactor II, where the liquid melt is contacted with hydrogen chloride at a temperature in the range from 395 to 405° C. so that water is formed, obtaining a liquid melt being enriched in chloride anions (CI-) compared to the liquid melt obtained according to (a); ⋅(c) circulating the liquid melt obtained in (b) to the reaction zone iii in the third bubble lift reactor III, which is operated at a temperature in the range from 420 to 430° C. so that chlorine (Cl2) is formed, wherein Cl2 is removed from the reaction zone iii and the third bubble lift reactor III respectively in gaseous form, leaving a liquid melt depleted of Cl-compared to the liquid melt obtained according to (b). The invention further relates to a reactor system comprising three bubble lift reactors I, II and III.

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