公开(公告)号：EP2214797B1

公开(公告)日：2013-10-02

申请号：EP08874459.4

申请日：2008-11-19

Applicant: BASF SE

Inventor： FRIESE, Thorsten ,  BECHTEL, Marcus ,  GERBER, Bernd ,  PASCHOLD, Jürgen

IPC: B01D3/00 ,  B01D3/14 ,  B01J19/32

CPC classification number: B01D3/008 ,  B01D3/14

公开(公告)号：EP2334631A1

公开(公告)日：2011-06-22

申请号：EP09780561.8

申请日：2009-07-14

Applicant: BASF SE

Inventor： BLUM, Till ,  ZUROWSKI, Peter ,  RISSEL, Steffen ,  HAREMZA, Sylke ,  FRIESE, Thorsten ,  JÄGER, Ulrich ,  SCHLIEPHAKE, Volker ,  MÜLLER-ENGEL, Klaus, Joachim ,  HAMMON, Ulrich ,  HEILEK, Jörg ,  MÜLLER, Imke, Britta

IPC: C07C51/25 ,  C07C51/43

CPC classification number: C07C51/252 ,  C07C51/43 ,  C07C57/04

Abstract: The invention relates to a method for separating acrylic acid, contained as the main constituent and glyoxal, contained as a by-product from a gaseous product mixture of a partial gas phase oxidation of a C
3 precursor compound of acrylic acid. According to said method, a liquid phase P is created, 70 % of the total weight of which consists of acrylic acid and which contains at least 200 mol ppm of glyoxal in relation to the contained molar quantity of acrylic acid. The glyoxal is separated from the acrylic acid by crystallisation from the liquid phase P.

Abstract translation: 一种用于分离丙烯酸本酸作为主要产物和乙二醛存在过程的副产物在C3前体化合物的部分气相氧化，其中液体相P被获得，其中besteht丙烯酸的产物气体混合物 到在它的重量，并且基于丙烯酸其中存在的摩尔量的至少70％的程度，包括乙二醛至少200摩尔ppm，其中乙二醛从丙烯酸在液相P通过结晶分离 ，

公开(公告)号：EP1699537B1

公开(公告)日：2010-09-22

申请号：EP04804129.7

申请日：2004-12-21

Applicant: BASF SE

Inventor： LANG, Neven ,  STROEFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  SIEGERT, Markus ,  OTT, Michael ,  HASSE, Hans ,  GRÜTZNER, Thomas ,  BLAGOV, Sergej

IPC: B01D3/36 ,  C07D323/06 ,  B01D3/14

CPC classification number: C07D323/06 ,  B01D3/146 ,  B01D3/36 ,  Y02P20/127

Abstract: The invention relates to a method for separating trioxane from a mixture containing formaldehyde, trioxane and water. According to said method: the mixture (1) is distilled in a first distillation stage (7) at a pressure of between 0.1 and 2 bar to obtain a stream (8) containing formaldehyde and a stream (9) containing predominantly trioxane, in addition to water and formaldehyde; the stream (9) is mixed with a recycling stream (19) containing predominantly trioxane, in addition to water and formaldehyde to form a stream (10) containing predominantly trioxane, in addition to water and formaldehyde; the stream (10) is then distilled in a second distillation stage (14) at a pressure of between 0.2 and 10 bar, optionally after the separation of low-boilers from the stream (9) or (10) in an additional distillation stage (11). The pressure in the second distillation stage (14) is at least 0.1 bar higher than the pressure in the first distillation stage (7). Said distillation produces a stream (15) consisting of trioxane and a stream (16) containing predominantly trioxane, in addition to water and formaldehyde. The stream (16) is then distilled in a third distillation stage (17) at a pressure of between 0.1 and 4 bar, to obtain a stream (18) containing predominantly water, in addition to formaldehyde and the recycling stream (19) containing predominantly trioxane, in addition to water and formaldehyde. The resultant stream (18) is optionally distilled in a fourth distillation stage (20), to obtain a stream (21) containing predominantly water and a stream (22) containing predominantly formaldehyde.

公开(公告)号：EP1699776B1

公开(公告)日：2008-11-12

申请号：EP04804133.9

申请日：2004-12-21

Applicant: BASF SE

Inventor： SIEGERT, Markus ,  LANG, Neven ,  STROEFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  HASSE, Hans

IPC: C07D323/06

CPC classification number: C07D323/06

Abstract: The invention relates to a method for separating trioxane from an inlet flow (I) consisting of formaldehyde, trioxane and water. Said method consists in a) preparing an inlet flow (I), which contains formaldehyde as the main component and trioxane and water as auxiliary components, b) mixing the inlet flow (I) with a return flow (VII) containing trioxane as the main component and formaldehyde and water as auxiliary components. An inlet flow (Ia), which contains formaldehyde as the main component and trioxane and water as the auxiliary components, is obtained. Said method also consists in c) distilling the inlet flow (Ia) in a first distillation step at a pressure of between 0.1 2.5 bars, thus enabling a flow (II), which contains formaldehyde as the main component and water as the auxiliary component, and a flow (III), which contains trioxane as the main component and water and formaldehyde as the auxiliary components, to be obtained, d) distilling the flow (III), optionally after separating materials at a low-boiling point from the flow (III) in a low-boiling separation step and in a second distillation step at a pressure of between 0.2 17.5 bars, whereby the pressure in the second distillation step is 0.1 - 15 bars higher than the pressure in the first distillation step. A flow (IV) is obtained which is essentially made of trioxane, and also a flow V which contains trioxane as the main component and water and formaldehyde as the auxiliary components, e) optionally mixing the flow (V) with a flow (IX), which contains water as the main component, in order to obtain a flow (Va) having a higher water content than flow (V), whereby flow (Va) contains trioxane as the main component and water and formaldehyde as the auxiliary components, f) distilling the flow (V) and/or flow (Va) in a third in distillation step at a pressure of between 1 - 10 bars, whereby a flow (VI), which is essentially made of water, and the return flow (VII), which contains trioxane as the main component and water and formaldehyde as the auxiliary components, are obtained.

公开(公告)号：EP1915358A1

公开(公告)日：2008-04-30

申请号：EP06778089.0

申请日：2006-08-01

Applicant: BASF SE

Inventor： LANG, Neven ,  STRÖFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  SIEGERT, Markus ,  HASSE, Hans ,  GRÜTZNER, Thomas ,  BLAGOV, Sergej

IPC: C07D323/06

CPC classification number: C07D323/06 ,  Y02P20/125

Abstract: The invention relates to an integrated method for producing trioxane from formaldehyde. According to said method, a flow A1 containing water and formaldehyde as well as a recirculation flow B2 substantially composed of water and formaldehyde are delivered to a trioxane synthesis reactor in which the formaldehyde is reacted to trioxane such that a product flow A2 containing trioxane, water, and formaldehyde is obtained. Flow A2 and a recirculation flow D1 containing trioxane, water, and formaldehyde are fed to a first distillation column and are distilled at a pressure ranging from 0.1 to 2.5 bar such that a trioxane-enriched flow B1 and flow B2, which is essentially composed of water and formaldehyde, are obtained. Flow B1 is delivered to a second distillation column and is distilled at a pressure ranging from 0.2 to 17.5 bar such that a product flow substantially comprising trioxane and a flow C1 containing trioxane, water, and formaldehyde are obtained. Flow C1 is fed to a third distillation column and is distilled at a pressure ranging from 1 to 10 bar such that the recirculation flow D1 containing trioxane, water, and formaldehyde as well as a flow D2 that is substantially composed of water are obtained.

公开(公告)号：EP3331847A1

公开(公告)日：2018-06-13

申请号：EP16747502.9

申请日：2016-08-03

Applicant: BASF SE

Inventor： KORN, Tobias Johannes ,  BLUM, Till ,  CARLINE, Travis ,  FUCHS, Christopher ,  WELCH, Darryl ,  ZUROWSKI, Peter ,  SCHLIEPHAKE, Volker ,  RISSEL, Steffen ,  FRIESE, Thorsten ,  JAEGER, Ulrich ,  HAREMZA, Sylke

IPC: C07C51/235 ,  C07C57/04

CPC classification number: C07C45/32 ,  C07C45/33 ,  C07C45/35 ,  C07C45/38 ,  C07C45/39 ,  C07C45/783 ,  C07C51/21 ,  C07C51/235 ,  C07C51/245 ,  C07C51/252 ,  C07C51/42 ,  C07C51/43 ,  C07C51/44 ,  C07C51/47 ,  C07C57/04

Abstract: A process for production of acrylic acid includes preparing a product gas mixture by a catalytic gas-phase oxidation of a C3 precursor; cooling and contacting the cooled product gas mixture in an absorption column having at least two cooling loops in countercurrent with an absorbent to obtain an absorbate A, containing the absorbent and absorbed acrylic acid; condensing a high boiler fraction of the product gas mixture in a first cooling loop; condensing a low boiler fraction of the product gas mixture in a second cooling loop; maintaining a temperature of the absorbate A in the second cooling loop at a value of at least 56° C.; removing an acid water stream comprising glyoxal from the absorption column at a side take-off located above the second cooling loop; and removing a stream F of absorbate A from the absorption column at a side take-off, located at a height of the absorption column between the first cooling loop and the second cooling loop.

公开(公告)号：EP2334631B1

公开(公告)日：2017-03-01

申请号：EP09780561.8

申请日：2009-07-14

Applicant: BASF SE

Inventor： BLUM, Till ,  ZUROWSKI, Peter ,  RISSEL, Steffen ,  HAREMZA, Sylke ,  FRIESE, Thorsten ,  JÄGER, Ulrich ,  SCHLIEPHAKE, Volker ,  MÜLLER-ENGEL, Klaus, Joachim ,  HAMMON, Ulrich ,  HEILEK, Jörg ,  MÜLLER, Imke, Britta

IPC: C07C51/25 ,  C07C51/43

CPC classification number: C07C51/252 ,  C07C51/43 ,  C07C57/04

公开(公告)号：EP2376417B1

公开(公告)日：2016-10-19

申请号：EP09768013.6

申请日：2009-11-30

Applicant: BASF SE

Inventor： SCHLIEPHAKE, Volker ,  FRIESE, Thorsten ,  BOTT, Klaus ,  BLECHSCHMITT, Michael ,  BLUM, Till ,  MÜLLER-ENGEL, Klaus, Joachim

IPC: C07C51/42

CPC classification number: C07C51/42 ,  C07C57/04

公开(公告)号：EP2459618A1

公开(公告)日：2012-06-06

申请号：EP10736725.2

申请日：2010-07-27

Applicant: BASF SE

Inventor： SCHOPOHL, Matthias ,  OSTROWSKI, Thomas ,  MECKELNBURG, Dirk ,  JOVANOVIC, Renata ,  LÖFFLER, Achim ,  PALLASCH, Hans-Jürgen ,  FRIESE, Thorsten ,  SCHAUß, Eckard ,  SZESCHKUS, Susanne ,  CHILEKAR, Vinit ,  SCHWARZ, Hans Volkmar

IPC: C08G65/30

CPC classification number: C08G65/2696 ,  C08G65/30

Abstract: Method for producing polyetherols, comprising the following steps: a) reacting at least one starter compound with at least one alkylene oxide and a catalyst to yield a raw polyetherol, and b) removing low-molecular by-products from the raw polyetherol from step a), characterized in that the crude polyetherol is treated with a stripping gas in a column having internals.

公开(公告)号：EP2376417A2

公开(公告)日：2011-10-19

申请号：EP09768013.6

申请日：2009-11-30

Applicant: BASF SE

Inventor： SCHLIEPHAKE, Volker ,  FRIESE, Thorsten ,  BOTT, Klaus ,  BLECHSCHMITT, Michael ,  BLUM, Till ,  MÜLLER-ENGEL, Klaus, Joachim

IPC: C07C51/42

CPC classification number: C07C51/42 ,  C07C57/04

Abstract: The invention relates to a method for cleaving Michael adducts that are contained in a fluid F at a weight proportion of ≥ 10 wt % and that were formed in the production of acrylic acid or esters thereof, in a cleaving device, which comprises a pump P and a separation column K having installations that effect separation and a recirculation heat exchanger UW, wherein for the purpose of feeding the cleaving energy, the pump P draws sump fluid from the sump chamber of the separation column K and continuously feeds said sump fluid back into the sump chamber above the level of the sump fluid through the recirculation heat exchanger UW, and wherein the pump P is a radial centrifugal pump having an open impeller.