公开(公告)号：US20100152482A1

公开(公告)日：2010-06-17

申请号：US12634143

申请日：2009-12-09

申请人： Volker Schliephake ,  Thorsten Friese ,  Klaus Bott ,  Michael Blechschmitt ,  Till Blum ,  Klaus Joachim Müller-Engel

发明人： Volker Schliephake ,  Thorsten Friese ,  Klaus Bott ,  Michael Blechschmitt ,  Till Blum ,  Klaus Joachim Müller-Engel

IPC分类号： C07C69/54

CPC分类号： C07C51/42 ,  C07C57/04

摘要： A process for redissociating Michael adducts which are present in a liquid F with a proportion by weight of ≧10% by weight and have been formed in the preparation of acrylic acid or esters thereof in a redissociating apparatus which comprises a pump P, a separating column K with separating internals and a circulation heat exchanger UW, wherein, for the purpose of supplying the cleavage energy, the pump P sucks in bottoms liquid from the bottom space of the separating column K and, via the circulation heat exchanger UW, continually recycles it into the bottom space above the level of the bottoms liquid, and wherein the pump P is a radial circulation pump with an open impeller.

摘要翻译： 一种将重量分数为10重量％存在于液体F中的迈克尔加合物重新分离并在制备丙烯酸或其酯的反分离装置中形成的方法，该方法包括泵P，分离塔 K具有分离内部件和循环换热器UW，其中为了提供切割能量，泵P从分离塔K的底部空间吸入液体的底部，并且通过循环热交换器UW连续地再循环 进入底部液面高度的底部空间，并且其中泵P是具有开放式叶轮的径向循环泵。

公开(公告)号：US08263802B2

公开(公告)日：2012-09-11

申请号：US12634143

申请日：2009-12-09

申请人： Volker Schliephake ,  Thorsten Friese ,  Klaus Bott ,  Michael Blechschmitt ,  Till Blum ,  Klaus Joachim Mueller-Engel

发明人： Volker Schliephake ,  Thorsten Friese ,  Klaus Bott ,  Michael Blechschmitt ,  Till Blum ,  Klaus Joachim Mueller-Engel

IPC分类号： C07C265/00

CPC分类号： C07C51/42 ,  C07C57/04

摘要： A process for redissociating Michael adducts which are present in a liquid F with a proportion by weight of ≧10% by weight and have been formed in the preparation of acrylic acid or esters thereof in a redissociating apparatus which comprises a pump P, a separating column K with separating internals and a circulation heat exchanger UW, wherein, for the purpose of supplying the cleavage energy, the pump P sucks in bottoms liquid from the bottom space of the separating column K and, via the circulation heat exchanger UW, continually recycles it into the bottom space above the level of the bottoms liquid, and wherein the pump P is a radial circulation pump with an open impeller.

摘要翻译： 一种将重量分数为10重量％存在于液体F中的迈克尔加合物重新分离并在制备丙烯酸或其酯的反分离装置中形成的方法，该方法包括泵P，分离塔 K具有分离内部件和循环换热器UW，其中为了提供切割能量，泵P从分离塔K的底部空间吸入液体的底部，并且通过循环热交换器UW连续地再循环 进入底部液面高度的底部空间，并且其中泵P是具有开放式叶轮的径向循环泵。

公开(公告)号：US20100022734A1

公开(公告)日：2010-01-28

申请号：US12509078

申请日：2009-07-24

申请人： Till Blum ,  Peter Zurowski ,  Steffen Rissel ,  Sylke Haremza ,  Thorsten Friese ,  Ulrich Jäger ,  Volker Schliephake ,  Klaus Joachim Müller-Engel ,  Ulrich Hammon ,  Jörg Heilek ,  Imke Britta Müller

发明人： Till Blum ,  Peter Zurowski ,  Steffen Rissel ,  Sylke Haremza ,  Thorsten Friese ,  Ulrich Jäger ,  Volker Schliephake ,  Klaus Joachim Müller-Engel ,  Ulrich Hammon ,  Jörg Heilek ,  Imke Britta Müller

IPC分类号： C08F20/06 ,  B01D53/72 ,  C07C51/43

CPC分类号： C07C51/252 ,  C07C51/43 ,  C07C57/04

摘要： A process for separating acrylic acid present as a main product and glyoxal present as a by-product in a product gas mixture of a partial gas phase oxidation of a C3 precursor compound, in which a liquid phase P is obtained, which consists of acrylic acid to an extent of at least 70% of its weight and, based on the molar amount of acrylic acid present therein, comprises at least 200 molar ppm of glyoxal, in which the glyoxal is separated from the acrylic acid in the liquid phase P by crystallization.

摘要翻译： 将作为主要成分存在的丙烯酸和作为副产物存在的乙二醛的方法分离在得到液相P的C3前体化合物的部分气相氧化的产物气体混合物中，该混合物由丙烯酸 至少其重量的70％的程度，并且基于其中存在的丙烯酸的摩尔量，包含至少200摩尔ppm的乙二醛，其中通过结晶将乙二醛与液相P中的丙烯酸分离 。

公开(公告)号：US20110036704A1

公开(公告)日：2011-02-17

申请号：US12827161

申请日：2010-06-30

申请人： Till BLUM ,  Peter Zurowski ,  Steffen Rissel ,  Sylke Haremza ,  Thorsten Friese ,  Ulrich Jäger ,  Volker Schliephake ,  Klaus Joachim Müller-Engel ,  Ulrich Hammon ,  Frank Höfer

发明人： Till BLUM ,  Peter Zurowski ,  Steffen Rissel ,  Sylke Haremza ,  Thorsten Friese ,  Ulrich Jäger ,  Volker Schliephake ,  Klaus Joachim Müller-Engel ,  Ulrich Hammon ,  Frank Höfer

IPC分类号： B01D3/34 ,  B01D3/06

CPC分类号： C07C51/252 ,  C07C51/44 ,  C07C57/04

摘要： A process for removal of a crude acrylic acid from a product gas mixture which comprises glyoxal as a by-product from a heterogeneously catalyzed partial gas phase oxidation of at least one C3 precursor compound, which comprises the absorption of the acrylic acid in a high-boiling absorbent and the rectificative workup of the resulting adsorbate, and in which absorbent present in the bottoms liquid withdrawn from the bottom space of the absorption column is distilled off in a distillation unit and recycled into the absorption, before high boilers which remain are discharged, and in which the glyoxal content of the crude acrylic acid is reduced by restricting the high boiler residence time in the distillation unit.

摘要翻译： 一种从产物气体混合物中除去粗丙烯酸的方法，该产物气体混合物包含乙二醛作为副产物从至少一种C3前体化合物的非均相催化的部分气相氧化，其包括丙烯酸在高温下的吸收， 沸腾的吸收剂和所得到的被吸附物的整理处理，其中存在于从吸收塔的底部空间排出的底部液体中的吸收剂在蒸馏单元中被蒸馏除去，并在剩余的高锅炉排出之前再循环到吸收中， 并且其中粗丙烯酸的乙二醛含量通过限制在蒸馏单元中的高锅炉停留时间而降低。

公开(公告)号：US09212122B2

公开(公告)日：2015-12-15

申请号：US13253245

申请日：2011-10-05

申请人： Till Blum ,  Peter Zurowski ,  Tobias Johannes Korn ,  Sylke Haremza ,  Thorsten Friese ,  Friedrich-Georg Martin ,  Ulrich Jäger ,  Steffen Rissel ,  Volker Schliephake

发明人： Till Blum ,  Peter Zurowski ,  Tobias Johannes Korn ,  Sylke Haremza ,  Thorsten Friese ,  Friedrich-Georg Martin ,  Ulrich Jäger ,  Steffen Rissel ,  Volker Schliephake

IPC分类号： C07C51/50

CPC分类号： C07C51/50 ,  C07C57/04

摘要： A process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P whose acrylic acid content is at least 10% by weight and which, based on the weight of the acrylic acid present therein, additionally comprises at least 100 ppm by weight of propionic acid and at least 100 ppm by weight of glyoxal, in which at least one chemical compound of the element copper is added to the liquid phase P, and the resulting liquid phases P to which a chemical compound of the element copper has been added.

摘要翻译： 抑制存在于丙烯酸含量为至少10重量％的液相P中的丙烯酸的不期望的自由基聚合的方法，其中基于其中存在的丙烯酸的重量另外包含至少100ppm的 丙酸的重量和至少100重量ppm的乙二醛，其中至少一种元素铜的化合物被加入到液相P中，以及所得的液相P，其中元素铜的化合物已经被 添加。

公开(公告)号：US09096513B2

公开(公告)日：2015-08-04

申请号：US13253245

申请日：2011-10-05

申请人： Till Blum ,  Peter Zurowski ,  Tobias Johannes Korn ,  Sylke Haremza ,  Thorsten Friese ,  Friedrich-Georg Martin ,  Ulrich Jäger ,  Steffen Rissel ,  Volker Schliephake

发明人： Till Blum ,  Peter Zurowski ,  Tobias Johannes Korn ,  Sylke Haremza ,  Thorsten Friese ,  Friedrich-Georg Martin ,  Ulrich Jäger ,  Steffen Rissel ,  Volker Schliephake

IPC分类号： C07C51/50

摘要： A process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P whose acrylic acid content is at least 10% by weight and which, based on the weight of the acrylic acid present therein, additionally comprises at least 100 ppm by weight of propionic acid and at least 100 ppm by weight of glyoxal, in which at least one chemical compound of the element copper is added to the liquid phase P, and the resulting liquid phases P to which a chemical compound of the element copper has been added.

公开(公告)号：US08299299B2

公开(公告)日：2012-10-30

申请号：US12509078

申请日：2009-07-24

申请人： Till Blum ,  Peter Zurowski ,  Steffen Rissel ,  Sylke Haremza ,  Thorsten Friese ,  Ulrich Jaeger ,  Volker Schliephake ,  Klaus Joachim Mueller-Engel ,  Ulrich Hammon ,  Joerg Heilek ,  Imke Britta Mueller

发明人： Till Blum ,  Peter Zurowski ,  Steffen Rissel ,  Sylke Haremza ,  Thorsten Friese ,  Ulrich Jaeger ,  Volker Schliephake ,  Klaus Joachim Mueller-Engel ,  Ulrich Hammon ,  Joerg Heilek ,  Imke Britta Mueller

IPC分类号： C07C51/42

CPC分类号： C07C51/252 ,  C07C51/43 ,  C07C57/04

摘要： A process for separating acrylic acid present as a main product and glyoxal present as a by-product in a product gas mixture of a partial gas phase oxidation of a C3 precursor compound, in which a liquid phase P is obtained, which consists of acrylic acid to an extent of at least 70% of its weight and, based on the molar amount of acrylic acid present therein, comprises at least 200 molar ppm of glyoxal, in which the glyoxal is separated from the acrylic acid in the liquid phase P by crystallization.

摘要翻译： 将作为主要成分存在的丙烯酸和作为副产物存在的乙二醛的方法分离在得到液相P的C3前体化合物的部分气相氧化的产物气体混合物中，该混合物由丙烯酸 至少其重量的70％的程度，并且基于其中存在的丙烯酸的摩尔量，包含至少200摩尔ppm的乙二醛，其中通过结晶将乙二醛与液相P中的丙烯酸分离 。

公开(公告)号：US20120085969A1

公开(公告)日：2012-04-12

申请号：US13253245

申请日：2011-10-05

申请人： Till Blum ,  Peter Zurowski ,  Tobias Johannes Korn ,  Sylke Haremza ,  Thorsten Friese ,  Friedrich-Georg Martin ,  Ulrich Jäger ,  Steffen Rissel ,  Volker Schliephake

发明人： Till Blum ,  Peter Zurowski ,  Tobias Johannes Korn ,  Sylke Haremza ,  Thorsten Friese ,  Friedrich-Georg Martin ,  Ulrich Jäger ,  Steffen Rissel ,  Volker Schliephake

IPC分类号： C09K3/00

CPC分类号： C07C51/50 ,  C07C57/04

摘要： A process for inhibiting unwanted free-radical polymerization of acrylic acid present in a liquid phase P whose acrylic acid content is at least 10% by weight and which, based on the weight of the acrylic acid present therein, additionally comprises at least 100 ppm by weight of propionic acid and at least 100 ppm by weight of glyoxal, in which at least one chemical compound of the element copper is added to the liquid phase P, and the resulting liquid phases P to which a chemical compound of the element copper has been added.

摘要翻译： 抑制存在于丙烯酸含量为至少10重量％的液相P中的丙烯酸的不期望的自由基聚合的方法，其中基于其中存在的丙烯酸的重量另外包含至少100ppm的 丙酸的重量和至少100重量ppm的乙二醛，其中至少一种元素铜的化合物被加入到液相P中，以及所得的液相P，其中元素铜的化合物已经被 添加。

公开(公告)号：US08530678B2

公开(公告)日：2013-09-10

申请号：US11665840

申请日：2005-10-20

申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

IPC分类号： C07D323/06

CPC分类号： C07D323/06

摘要： Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

摘要翻译： 公开的方法包括：（a）在合适的催化剂存在下使甲醛水溶液在反应器中反应，得到包含三恶烷，甲醛和水的反应产物混合物; （b）蒸馏反应产物混合物以形成包含粗三恶烷的顶流; 和（c）在一个或多个附加阶段处理顶部流以形成纯三恶烷; 其中在蒸馏反应混合物期间抽出水分流。

公开(公告)号：US08076510B2

公开(公告)日：2011-12-13

申请号：US12107420

申请日：2008-04-22

申请人： Ulrich Hammon ,  Thorsten Friese ,  Jochen Petzoldt ,  Klaus Joachim Mueller-Engel ,  Ulrich Cremer ,  Andreas Raichle

发明人： Ulrich Hammon ,  Thorsten Friese ,  Jochen Petzoldt ,  Klaus Joachim Mueller-Engel ,  Ulrich Cremer ,  Andreas Raichle

IPC分类号： C07C51/16

CPC分类号： B01J8/067 ,  B01J23/002 ,  B01J23/8885 ,  B01J27/199 ,  B01J35/0006 ,  B01J2208/00212 ,  B01J2208/00221 ,  B01J2208/00513 ,  B01J2208/025 ,  B01J2219/30207 ,  B01J2219/30215 ,  B01J2523/00 ,  C07C51/235 ,  C07C57/04 ,  B01J2523/13 ,  B01J2523/41 ,  B01J2523/54 ,  B01J2523/68 ,  B01J2523/69 ,  B01J2523/842 ,  B01J2523/845 ,  B01J2523/17 ,  B01J2523/55 ,  B01J2523/15 ,  B01J2523/51 ,  B01J2523/53 ,  B01J2523/62

摘要： A process for starting-up a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or of methacrolein to methacrylic acid over a fixed catalyst bed disposed in a tube bundle reactor cooled by a heat exchange medium, wherein the temperature of the heat exchange medium is ≧290° C. and the temperature of that reactor plate surface which faces the reaction gas entry mixture and the temperature of the reaction gas entry mixture itself are ≦285° C.

摘要翻译： 一种在由热交换介质冷却的管束反应器中的固定催化剂床上启动丙烯醛异丙烯醛至丙烯醛或甲基丙烯醛至甲基丙烯酸的非均相催化部分气相氧化方法，其中热交换介质的温度 ≧290℃，反应气体入口混合物的反应器板表面的温度和反应气体入口混合物本身的温度为285℃