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    ПОЛУЧЕНИЕ ТРЕТ-БУТИЛОВЫХ ЭФИРОВ ЭТИЛЕН-НЕНАСЫЩЕННЫХ КАРБОНОВЫХ КИСЛОТ
    4.
    发明专利
    ПОЛУЧЕНИЕ ТРЕТ-БУТИЛОВЫХ ЭФИРОВ ЭТИЛЕН-НЕНАСЫЩЕННЫХ КАРБОНОВЫХ КИСЛОТ 未知

    公开(公告)号：EA035883B1

    公开(公告)日：2020-08-27

    申请号：EA201891407

    申请日：2016-11-28

    Applicant: BASF SE

    Inventor： HORSTMANN CATHARINA ,  HECHLER CLAUS ,  GRACKIEWICZ GREGOR ,  SCHALL BERND

    IPC: C07C67/04 ,  B01D3/14 ,  C07C67/54 ,  C07C67/62

    Abstract: Способнепрерывногополучениятрет-бутиловогоэфираэтилен-ненасыщеннойкарбоновойкислоты, включающийследующиеэтапы: a) реакциюэтилен-ненасыщеннойкарбоновойкислотыс изобутеномв присутствиикислотногокатализаторас получениемэтерификационнойсмеси; b) удалениекислотногокатализатора; c) удалениекомпонентовс низкойтемпературойкипения; и d) подачужидкости, содержащейтрет-бутиловыйэфир, вдистиллятор, гдеееподвергаюточисткепутемдистилляции, приэтом d1) вдистилляторепроисходитразделениежидкости, содержащейтрет-бутиловыйэфир, нагазообразныйверхнийпродукт, содержащийтрет-бутиловыйэфир, ижидкийнижнийпродукт, содержащийкарбоновуюкислоту; d2) происходит, поменьшеймере, частичнаяконденсациягазообразноговерхнегопродукта, содержащеготрет-бутиловыйэфир, и, поменьшеймере, частичнаярециркуляцияконденсатав дистилляторв качествеобратногопотока; d3) происходит, поменьшеймере, частичнаярециркуляцияжидкогонижнегопродукта, содержащегокарбоновуюкислоту, наэтап a); d4) жидкийнижнийпродукт, содержащийкарбоновуюкислоту, отводяти подаютв нагревательноеустройство; изнагревательногоустройстваотводятперегретыйжидкийпотокрециркуляции, которыйспускаетсяв дистиллятор; и d5) поменьшеймере, вверхнейчастидистилляторапроисходитнагреваниеегостенок, контактирующихс паром, поменьшеймере, внекоторыхточках, и/илитакиестенки, поменьшеймере, внекоторыхточкахимеюттеплоизоляцию. Входеосуществленияспособасепарациятрет-бутиловогоэфираотнепрореагировавшейкарбоновойкислотыпроисходитприособеннонизкомуровнесопутствующейполимеризациитрет-бутиловогоэфираи карбоновойкислоты.

    PRODUCTION OF TERT-BUTYL ESTERS OF ALIPHATIC CARBOXYLIC ACIDS
    6.
    发明专利
    PRODUCTION OF TERT-BUTYL ESTERS OF ALIPHATIC CARBOXYLIC ACIDS 未知

    公开(公告)号：CA2980238A1

    公开(公告)日：2016-10-06

    申请号：CA2980238

    申请日：2016-03-30

    Applicant: BASF SE

    Inventor： HORSTMANN CATHARINA ,  HECHLER CLAUS ,  GRACKIEWICZ GREGOR ,  SCHALL BERND

    IPC: C07C67/04 ,  C07C69/54

    Abstract: The invention relates to a method for continuously producing the tert-butyl ester of an aliphatic C1-C4 carboxylic acid comprising a) reacting an aliphatic C1-C4 carboxylic acid with isobutene in the presence of an acidic catalyst in order to form an esterification mixture (G1); b) partially evaporating the esterification mixture (G1), whereby a liquid first high-boiler phase (SPh1) containing the acidic catalyst and a first exhaust vapor (B1) containing tert-butyl ester are obtained; c) condensing the first exhaust vapor (B1) in a fractionating manner by partially condensing the first exhaust vapor (B1) at a first pressure and a first temperature and obtaining a first condensate (K1), partially condensing the non-condensed second exhaust vapor (B2) at a second pressure and a second temperature and obtaining a second condensate (K2), wherein the first temperature lies 0 to 45 °C below the condensation temperature of the tert-butyl ester at the first pressure and the second temperature lies 45 to 80 °C below the condensation temperature of the tert-butyl ester at the second pressure, with the stipulation that the second temperature lies at least 5 °C below the first temperature; and d) combining the first condensate (K1) and the second condensate (K2) and feeding the first and second condensates to a joint processing operation, and feeding the third exhaust vapor (B3), which is not condensed at the second temperature, back to step a). The method allows the tert-butyl ester of an aliphatic C1-C4 carboxylic acid to be produced by reacting the carboxylic acid with isobutene, wherein unreacted isobutene is isolated from the esterification mixture in an energetically favorable manner and with an improved degree of separation.

    9.
    发明专利
    未知

    公开(公告)号：AT552047T

    公开(公告)日：2012-04-15

    申请号：AT07765633

    申请日：2007-06-26

    Applicant: BASF SE

    Inventor： HECHLER CLAUS ,  RUPPEL WILHELM ,  SCHINDLER GOETZ-PETER ,  HORSTMANN CATHARINA ,  BASSLER HANS-JUERGEN ,  DIETERLE MARTIN ,  KLAPPERT KARL-HEINRICH ,  MUELLER-ENGEL KLAUS JOACHIM

    IPC: B01J8/06 ,  B01J19/02 ,  B32B15/01 ,  C07C5/333 ,  C07C51/215 ,  C22C30/00 ,  C22C38/40

    Abstract: Continuous heterogeneously catalyzed partial dehydrogenation of at least one hydrocarbon to be dehydrogenated in the gas phase involves at least one catalyst bed disposed in the reaction chamber and with generation of a product gas comprising the at least one dehydrogenated hydrocarbon, unconverted hydrocarbon to be dehydrogenated and molecular hydrogen and/or steam, is dehydrogenated partially in an oxidative or non-oxidative manner to at least one dehydrogenated hydrocarbon, and at least one product gas stream is withdrawn continuously from the reaction chamber. Process for continuous heterogeneously catalyzed partial dehydrogenation of at least one hydrocarbon to be dehydrogenated in the gas phase involves a reaction chamber enclosed by a shell which is in contact with the reaction chamber and has at least one first orifice for feeding at least one starting gas stream into the reaction chamber and at least one second orifice for withdrawing at least one product gas stream from the reaction chamber, at least one starting gas stream comprising at least one hydrocarbon to be dehydrogenated is fed continuously in the reaction chamber. The at least one hydrocarbon to be dehydrogenated is conducted through at least one catalyst bed disposed in the reaction chamber and with generation of a product gas comprising the at least one dehydrogenated hydrocarbon, unconverted hydrocarbon to be dehydrogenated and molecular hydrogen and/or steam, is dehydrogenated partially in an oxidative or non-oxidative manner to at least one dehydrogenated hydrocarbon, and at least one product gas stream is withdrawn continuously from the reaction chamber. The shell is manufactured from a composite material which, on its side B in contact with the reaction chamber, consists of steel B comprising (wt.%): chromium (18-30), nickel (9-37), silicon (1-4), aluminum (>=0-4), nitrogen (>=0-0.3), carbon (>=0-0.15), manganese (>=0-4), phosphorus (>=0-0.05), sulfur (>=0-0.05), and at least one rare earth metal (>=0-0.1), and iron and impurities resulting from production. The steel B, on its side A facing away from the reaction chamber, is plated either directly or via an intermediate layer of copper, and/or nickel, onto steel A comprising (wt.%): chromium (15-20), nickel (6-18), silicon (>=0-0.8), aluminum (>=0-0.8), nitrogen (>=0-0.3), carbon (>=0-0.15), molybdenum (>=0-4), manganese (>=0-2), titanium (>=0-0.8), niobium (>=0-1.2), vanadium (>=0-0.9), boron (>=0-0.1), phosphorus (>=0-0.05), sulfur (>=0-0.05), iron and impurities resulting from production, or a composition comprising (wt.%) Cr (19-23), Ni (30-35), Co (>=0-1), Si (>=0-1), Al (0.15-0.7), C (>=0-0.12), Mn (>=0-2), Cu (>=0-0.75), Ti (0.15-0.7), Nb (>=0-0.1), P (>=0-0.05), S (>=0-0.05) and iron and impurities resulting from production. An independent claim is included for a shell encloses an interior and has at least one first orifice for feeding at least one gas stream into the interior and at least one second orifice for withdrawing a gas stream fed to the interior beforehand via the at least one first orifice O1 from the interior. The shell is manufactured from a composite material which, on its side B in contact with the reaction chamber, consists of steel B on its side A facing away from the reaction chamber is plated either directly or via an intermediate layer of copper and/or nickel onto steel A.

    Production of tert-butyl esters of ethylenically unsaturated carboxylic acids
    10.
    发明专利
    Production of tert-butyl esters of ethylenically unsaturated carboxylic acids 未知

    公开(公告)号：AU2016369920B2

    公开(公告)日：2020-06-04

    申请号：AU2016369920

    申请日：2016-11-28

    Applicant: BASF SE

    Inventor： HORSTMANN CATHARINA ,  HECHLER CLAUS ,  GRACKIEWICZ GREGOR ,  SCHALL BERND

    IPC: C07C67/04 ,  B01D3/14 ,  C07C67/54 ,  C07C67/62

    Abstract: A process for continuously producing the tert-butyl ester of an ethylenically unsaturated carboxylic acid where a) an ethylenically unsaturated carboxylic acid is reacted with isobutene in the presence of an acidic catalyst to give an esterification mixture; b) the acidic catalyst is removed; c) low-boiling-point constituents are removed; and d) a liquid containing tert-butyl ester is introduced into a distillation device and the product is purified by distillation in the distillation device, where d1) the liquid containing tert-butyl ester is separated in the distillation device to give a gaseous overhead product containing tert-butyl ester and a liquid bottom product containing carboxylic acid; d2) the gaseous overhead product containing tert-butyl ester is at least to some extent condensed and some of the condensate is returned to the distillation device; d3) the liquid bottom product containing carboxylic acid is at least to some extent returned to step a); d4) liquid bottom product containing carboxylic acid is drawn off and conducted to a heater, a superheated liquid return stream is taken from the heater and the superheated return stream is depressurized into the distillation device; and d5) at least in the overhead region of the distillation device those walls of the distillation device that are in contact with the vapours are thermally insulated and/or heated at least in some regions. The separation of the tert-butyl ester from unreacted carboxylic acid in the process proceeds with a particularly small extent of polymerization both of the tert-butyl ester and of the carboxylic acid.

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