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公开(公告)号：ZA202310791B
公开(公告)日：2025-02-26
申请号：ZA202310791
申请日：2023-11-22
Applicant: BASF SE
Inventor： ZHOU YUNFEI , LANG ORTMUND , MEIER MATTHIAS WILHELM , DE RUITER CORNELIS HENDRICUS , KRAMP MARVIN , GRACKIEWICZ GREGOR , MACHT JOSEF , GITTER MARKUS , HECHLER CLAUS
Abstract: The invention relates to a centrifugal mist eliminator for separating liquid droplets from a gas stream, comprising: - a shell (1), which has a circular cross-section and a vertical longitudinal axis (11); - a an upper hood (2), which delimits the shell (1) at the top and has a gas outlet connecting piece (7) for the gas stream purified in the centrifugal mist eliminator; - a drip plate (8), which is disposed below the gas outlet connecting piece (7); - a lower hood (10), which delimits the shell (1) at the bottom and which has a liquid outlet connecting piece (4) for discharging the separated liquid droplets; and - an inlet (3) for feeding the gas stream, the inlet leading tangentially into the shell (1); the centrifugal mist eliminator being characterized in that at least two nozzles (9) for feeding a stabilizer liquid into the interior of the centrifugal mist eliminator are provided, the nozzle outlet (15) of each nozzle being disposed between the tangential inlet (3) and the drip plate (8) in the vertical direction, and the main spray direction (12) of the nozzles (9) being directed upward at an interior angle of 0 to 60° to the vertical longitudinal axis (11). The invention also relates to a method for separating liquid droplets from a gas stream in a centrifugal mist eliminator of this type.
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公开(公告)号：MX384714B
公开(公告)日：2025-03-14
申请号：MX2018007416
申请日：2018-06-15
Applicant: BASF SE
Inventor： SCHALL BERND , HORSTMANN CATHARINA , HECHLER CLAUS , GRACKIEWICZ GREGOR
Abstract: Un proceso para la preparación continua de éster ter-butílico de un ácido carboxílico etilénicamente insaturado, que comprende: a) hacer reaccionar un ácido carboxílico etilénicamente insaturado con isobuteno en presencia de un catalizador ácido para obtener una mezcla de esterificación; b) remover el catalizador ácido; c) remover los componentes de bajo punto de ebullición; y d) proporcionar un líquido que contiene éster ter-butílico a un aparato de destilación y someterlo a destilación de purificación en el aparato de destilación, en donde: d1) en el aparato de destilación el líquido que comprende éster t-butílico es separado en un producto superior gaseoso que contiene éster t-butílico y un producto líquido de la parte inferior que comprende ácido carboxílico; d2) el producto superior gaseoso que comprende éster t-butílico es condensado por lo menos parcialmente y el condensado se recicla por lo menos parcialmente como reflujo al aparato de destilación; d3) el producto líquido de la parte inferior que contiene ácido carboxílico es reciclado por lo menos parcialmente a la etapa a); d4) el producto líquido de la parte inferior que comprende ácido carboxílico es extraído y transferido a un calentador; una corriente de reciclado líquida, sobrecalentada, es extraída del calentador; y la corriente de reciclado sobrecalentada se ingresa en el aparato de destilación; y d5) por lo menos en la región superior del aparato de destilación, las paredes del aparato de destilación que se hallen en contacto con el vapor, por lo menos en subregiones, son calentadas y/o térmicamente aisladas. En el desarrollo del proceso, la separación del éster t-butílico con respecto al ácido carboxílico no reaccionado se lleva a cabo en un nivel particularmente bajo de polimerización que acompaña tanto al éster t-butílico como al ácido carboxílico.
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公开(公告)号：CA3008436A1
公开(公告)日：2017-06-22
申请号：CA3008436
申请日：2016-11-28
Applicant: BASF SE
Inventor： HORSTMANN CATHARINA , HECHLER CLAUS , GRACKIEWICZ GREGOR , SCHALL BERND
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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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：ES2779776T3
公开(公告)日：2020-08-19
申请号：ES16801531
申请日：2016-11-28
Applicant: BASF SE
Inventor： HORSTMANN CATHARINA , HECHLER CLAUS , GRACKIEWICZ GREGOR , SCHALL BERND
Abstract: Procedimiento para la produccion continua del terc- butil-ester de un acido carboxilico etilenicamente insaturado, en el cual a) un acido carboxilico etilenicamente insaturado se hace reaccionar con isobuteno en presencia de un catalizador acido, produciendo una mezcla de esterificacion; b) se separa el catalizador acido; c) se separan componentes de baja ebullicion; y d) un liquido que contiene un terc- butil- ester se conduce a un dispositivo de destilacion y se somete a una destilacion pura en el dispositivo de destilacion, donde d1) el liquido que contiene el terc-butil ester, en el dispositivo de destilacion, se separa en un producto superior gaseoso que contiene terc-butil-ester y un producto del residuo de destilacion liquido que contiene un acido carboxilico; d2) el producto superior gaseoso que contiene terc- butil- ester se condensa al menos de forma parcial y el condensador se reconduce parcialmente, como reflujo, hacia el dispositivo de destilacion; d3) el producto del residuo de destilacion liquido que contiene acido carboxilico se reconduce al menos parciamente a la etapa a); d4) se extrae el producto del residuo de destilacion liquido que contiene acido carboxilico y se conduce a un calentador, se extrae del calentador un flujo de retorno liquido, sobrecalentado, y el flujo de retorno sobrecalentado se distiende en el dispositivo de destilacion; y d5) al menos en el area superior del dispositivo de destilacion, la pared del dispositivo de destilacion que se encuentra en contacto con el vapor al menos se calienta en subareas y/o se aisla termicamente.
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公开(公告)号：AU2016369920A1
公开(公告)日：2018-07-12
申请号：AU2016369920
申请日：2016-11-28
Applicant: BASF SE
Inventor： HORSTMANN CATHARINA , HECHLER CLAUS , GRACKIEWICZ GREGOR , SCHALL BERND
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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公开(公告)号：DE102015205752A1
公开(公告)日：2016-10-20
申请号：DE102015205752
申请日：2015-03-31
Applicant: BASF SE
Inventor： HORSTMANN CATHARINA , HECHLER CLAUS , GRACKIEWICZ GREGOR , SCHALL BERND
Abstract: Ein Verfahren zur kontinuierlichen Herstellung des tert-Butylesters einer aliphatischen C1-C4-Carbonsäure umfasst a) die Umsetzung einer aliphatischen C1-C4-Carbonsäure mit Isobuten in Gegenwart eines sauren Katalysators zu einem Veresterungsgemisch (G1); b) die partielle Verdampfung des Veresterungsgemischs (G1), wodurch man eine den sauren Katalysator enthaltende flüssige erste Schwersiederphase (SPh1), und einen tert-Butylester enthaltenden ersten Brüden (B1) erhält; c) die fraktionierende Kondensation des ersten Brüdens (B1), indem man den ersten Brüden (B1) bei einem ersten Druck und einer ersten Temperatur partiell kondensiert und ein erstes Kondensat (K1) erhält, den nicht kondensierten zweiten Brüden (B2) bei einem zweiten Druck und einer zweiten Temperatur partiell kondensiert und ein zweites Kondensat (K2) erhält, wobei die erste Temperatur 0 bis 45 °C unterhalb der Kondensationstemperatur des tert-Butylesters beim ersten Druck liegt und die zweite Temperatur 45 bis 80 °C unterhalb der Kondensationstemperatur des tert-Butylesters beim zweiten Druck liegt, mit der Maßgabe, dass die zweite Temperatur mindestens 5 °C unterhalb der ersten Temperatur liegt; und d) die Vereinigung des ersten Kondensats (K1) und des zweiten Kondensats (K2) und die Zufuhr zu einer gemeinsamen Aufarbeitung, und die Zurückführung des bei der zweiten Temperatur nicht kondensierten dritten Brüden (B3) in den Schritt a). Das Verfahren erlaubt die Herstellung des tert-Butylesters einer aliphatischen C1-C4-Carbonsäure durch Umsetzung der Carbonsäure mit Isobuten, wobei nicht umgesetztes Isobuten energetisch günstig und mit einem verbesserten Abtrennungsgrad aus dem Veresterungsgemisch isoliert wird.
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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
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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公开(公告)号：SG11201804444SA
公开(公告)日：2018-06-28
申请号：SG11201804444S
申请日：2016-11-28
Applicant: BASF SE
Inventor： HORSTMANN CATHARINA , HECHLER CLAUS , GRACKIEWICZ GREGOR , SCHALL BERND
Abstract: 80000077238 0000077238 0000077238WO WOWO WO01 0101 01 41 4141 41 A process for continuously preparing the tert-butyl ester of an ethy lenically unsaturated carboxylic acid, by a) reacting an ethylenically unsaturated carboxylic acid with isobu- tene in the presence of an acidic catalyst to give an esterification mixt ure; b) removing 5 the acidic catalyst; c) removing low-boiling components; and d) supplying a tert-butyl ester-comprising liquid to a distillation apparatus and subjecting it to puri fying distilla- tion in the distillation apparatus, where d1) in the distillation apparatus the t ert-butyl ester-comprising liquid is separated into a tert-butyl ester-compri sing gaseous top product and a carboxylic acid-comprising liquid bottom product; d2) the t ert-butyl ester- 10 comprising gaseous top product is at least partly condensed and the condensate is recycled partly as reflux to the distillation apparatus; d3) the carbox ylic acid-comprising liquid bottom product is recycled at least partly to step a); d4) carboxyli c acid- comprising liquid bottom product is drawn off and passed to a heater; a superheat ed, liquid recycle stream is taken from the heater; and the superheated recycle stream is 15 let down into the distillatiuon apparatus; and d5) at least in the top region of the distilla- tion apparatus, the distillation apparatus walls in contact with the vapor, a t least in sub- regions, are heated and/or thermally insulated. In the course of the process , the sepa- ration of the tert-butyl ester from unreacted carboxylic acid is carried on with a particu- larly low level of accompanying polymerization both of the tert-butyl est er and of the 20 carboxylic acid.
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