公开(公告)号：MX2008001005A

公开(公告)日：2008-03-25

申请号：MX2008001005

申请日：2006-08-04

Applicant: BASF AG

Inventor： STROEFER ECKHARD ,  HASSE HANS ,  LANG NEVEN ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  GRUTZNER THOMAS ,  BLAGOV SERGEJ

IPC: C07D323/06

Abstract: La invencion se relaciona con un proceso integrado para prepara trioxano de formaldehido en el que una corriente A1 que comprende agua y formaldehido y una corriente B2 de reciclado que consiste substancialmente de agua y formaldehido se alimentan a un reactor de sintesis de trioxano en el que el formaldehido se convierte en trioxano para obtener una corriente A2 de producto que comprende trioxano, agua y formaldehido; la corriente A2 se alimenta a una primera columna de destilacion y se destila a una presion en la escala de 0.1 a 2.5 bar para obtener una corriente B1 enriquecida en trioxano, y la corriente B2 que consiste substancialmente de agua y formaldehido; la corriente B1 y la corriente D1 de reciclado que comprende trioxano, agua y formaldehido se alimentan a una segunda columna de destilacion y se destilan a una presion en la escala de 0.2 a 17.5 bar para obtener una corriente C2 de producto que consiste substancialmente detrioxano, y una corriente C1 que comprende trioxano, agua y formaldehido; la corriente C1 se alimenta a una tercera columna de destilacion y se destila a una presion en la escala de 0.1 a 2.5 bar para obtener la corriente D1 de reciclado que comprende trioxano, agua y formaldehido, y una corriente D2 que consiste substancialmente de agua y formaldehido. (Figura 1).

公开(公告)号：MX2008001002A

公开(公告)日：2008-03-25

申请号：MX2008001002

申请日：2006-08-01

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  HASSE HANS ,  LANG NEVEN ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  GRUTZNER THOMAS ,  BLAGOV SERGEJ

IPC: C07D323/06

Abstract: La invencion se relaciona con un proceso integrado para preparar trioxano a partir de formaldehido en el que, en un primer paso, una corriente A1 que comprende agua y formaldehido y una corriente B2 de reciclado que consiste substancialmente de agua y formaldehido se alimentan a un reactor de sintesis de trioxano en el que el formaldehido se convierte en trioxano para obtener una corriente A2 de producto que comprende trioxano, agua y formaldehido. La corriente A2 y la corriente D1 de reciclado que comprende trioxano, agua y formaldehido se alimentan a una primera columna de destilacion y se destilan a una presion en la escala de 0.1 a 2.5 bar para obtener una corriente B1 enriquecida en trioxano, y la corriente B2 que consiste substancialmente de agua y formaldehido. La corriente B1 se alimenta a una segunda columna de destilacion y se destila a una presion en la escala de 0.2 a 17.-5 bar para obtener una corriente C2 de producto que consiste substancialmente de trioxano, y una corriente C1 que comprende trioxano, agua y formaldehido. La corriente C1 se alimenta a una tercer acolumna de destilacion y se destila a una presion en la escala de 1 a 10 bar para obtener la corriente D1 de reciclado que comprende trioxano, agua y formaldehido, y una corriente D2 que consiste substancialmente de agua.

公开(公告)号：DE102005051974A1

公开(公告)日：2007-05-03

申请号：DE102005051974

申请日：2005-10-31

Applicant: BASF AG

Inventor： LANG NEVEN ,  BOEHLING RALF ,  STAMMER ACHIM ,  OLDENBURG JAN ,  SIEGERT MARKUS ,  STROEFER ECKHARD

IPC: C07D323/06 ,  C07D317/12

Abstract: Preparation of trioxane and at least a comonomer for the preparation of (co)polymer on trioxane basis, comprises (a) converting formaldehyde and at least a co-monomer educt to trioxane and co-monomer in an aqueous solution to obtain a reaction mixture; (b) distilling the reaction mixture in a first distillation step at a first pressure to obtain stream (B1) and a stream (B2); and (c) distilling the stream (B1) in a second distillation step to obtain stream (C1) containing trioxane, co-monomer and water, and a product stream (C2) containing co-monomer and trioxane. Preparation of trioxane and at least a co-monomer for the preparation of (co)polymer on trioxane basis, comprises: (a) converting formaldehyde and at least a co-monomer educt to trioxane and co-monomer in an aqueous solution to obtain a reaction mixture containing trioxane, co-monomer, formaldehyde, water and optionally co-monomer educt, by synthesis step; (b) distilling the reaction mixture in a first distillation step at a first pressure to obtain stream (B1) enriched with trioxane and comonomer, and a stream (B2) containing water, formaldehyde and optionally comonomer-educt; and (c) distilling the stream (B1) in a second distillation step at a pressure above the pressure of the first distillation step to obtain stream (C1) containing trioxane, co-monomer and water, and a product stream (C2) containing co-monomer and trioxane.

公开(公告)号：BRPI0417859A

公开(公告)日：2007-04-27

申请号：BRPI0417859

申请日：2004-12-21

Applicant: BASF AG

Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  OTT MICHAEL ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

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

Abstract: A process for removing trioxane from a mixture I of formaldehyde, trioxane and water, by a) distilling the mixture I in a first distillation stage at a pressure of from 0.1 to 2 bar to obtain a stream II which comprises formaldehyde and a stream III which comprises predominantly trioxane and additionally water and formaldehyde, b) mixing the stream III with a recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde to obtain a stream IIIa which comprises predominantly trioxane and additionally water and formaldehyde, c) distilling the stream IIIa, if appropriate after removing low boilers from the stream III or IIIa in a further distillation stage, in a second distillation stage at a pressure of from 0.2 to 10 bar, the pressure in the second distillation stage being at least 0.1 bar higher than the pressure in the first distillation stage, to obtain a stream IV of trioxane and a stream V which comprises predominantly trioxane and additionally water and formaldehyde, d) distilling the stream V in a third distillation stage at a pressure of from 0.1 to 4 bar to obtain a stream VI which comprises predominantly water and additionally formaldehyde, and the recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde, e) if appropriate, distilling the stream VI in a fourth distillation stage to obtain a stream VIII which comprises predominantly water, and a stream IX which comprises predominantly formaldehyde.

公开(公告)号：DE102005036544A1

公开(公告)日：2007-02-15

申请号：DE102005036544

申请日：2005-08-03

Applicant: BASF AG

Inventor： LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  SIEGERT MARKUS ,  HASSE HANS ,  GRUETZNER THOMAS ,  BLAGOV SERGEJ

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde, comprising the steps of: a) a stream A 1 comprising water and formaldehyde and a recycle stream B 2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor and allowed to react to obtain a product stream A 2 comprising trioxane, water and formaldehyde; b) stream A 2 is fed to a first low-pressure distillation column and distilled at a pressure of from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane and additionally comprising water and formaldehyde, and the recycle stream B 2 consisting substantially of formaldehyde and water; c) stream B 1 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a second low-pressure distillation column and distilled at a pressure of from 0.1 to 2.5 bar to obtain a stream C 1 comprising predominantly trioxane and additionally formaldehyde and water, and a stream C 2 consisting substantially of formaldehyde and water; d) stream C 1 is fed to a high-pressure distillation column and distilled at a pressure of from 0.2 to 17.5 bar to obtain the recycle stream D 1 and a product stream D 2 consisting substantially of trioxane, in which a removal of the low boilers present in streams B 1 or C 1 may be undertaken between steps b) and c) or c) and d).

公开(公告)号：MXPA06007063A

公开(公告)日：2006-09-04

申请号：MXPA06007063

申请日：2004-12-23

Applicant: BASF AG

Inventor： SIEGERT MARKUS

IPC: B01J8/02 ,  B01J8/04 ,  B01J19/24 ,  C07C45/38 ,  F28D9/00 ,  B01J08/02

Abstract: La invencion se relaciona con un metodo para producir formaldehido por oxidacion en fase gaseosa de vapor de metanol con un flujo de gas que contiene oxigeno molecular en presencia de un catalizador de lecho solido que contiene hierro y molibdeno. La invencion se caracteriza en que el metodo se lleva a cabo en un reactor (1) que comprende placas (2) termicas de lamina de metal las cuales se colocan a una distancia una de otra en la direccion longitudinal del reactor (1), las placas termicas de lamina de metal son cruzadas por el flujo de un portador de calor. El reactor tambien comprende dispositivo para suministrar y retirar (3, 4) el portador de calor desde/hasta las placas (2) termicas de lamina de acero, y espacios (5) los cuales se colocan entre las placas (2) metalicas termicas de lamina de acero y las cuales se llenan con el catalizador de lecho solido y se introduce dentro del flujo de gas que contiene el vapor de metanol y el oxigeno molecular.

公开(公告)号：NO20062811L

公开(公告)日：2006-07-14

申请号：NO20062811

申请日：2006-06-15

Applicant: BASF AG

Inventor： STAMMER ACHIM ,  HASSE HANS ,  STROEFER ECKHARD ,  LANG NEVEN ,  SIEGERT MARKUS ,  FRIESE THORSTEN

IPC: C07D323/06

Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

公开(公告)号：DE102004058707A1

公开(公告)日：2006-06-08

申请号：DE102004058707

申请日：2004-12-06

Applicant: BASF AG

Inventor： LANG NEVEN ,  STAMMER ACHIM ,  STROEFER ECKHARD ,  SIEGERT MARKUS

IPC: C07D323/06

公开(公告)号：DE102004040284A1

公开(公告)日：2006-02-23

申请号：DE102004040284

申请日：2004-08-19

Applicant: BASF AG

Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN

IPC: B01D3/14 ,  C07D323/06

Abstract: The present invention relates to a process for distillatively removing pure trioxane from a feedstream (I) comprising trioxane in a proportion of at least 50% by weight, based on the total weight of the feedstream (I), and additionally formaldehyde and water, which comprises feeding the feedstream I and a further aqueous stream (II) which does not contain any components extraneous to the feedstream to a dividing wall column (TWK 1 ) having a dividing wall TW which is arranged substantially perpendicularly and divides the column interior into a feed region (A 1 ), a withdrawal reaction (B 1 ), an upper combined column region (C 1 ) and a lower combined column region (D 1 ), and drawing off from the first dividing wall column (TWK 1 ) a bottom stream (III) comprising pure trioxane and a sidestream (IV) at the withdrawal region (B 1 ), comprising pure water.

公开(公告)号：DE102004021985A1

公开(公告)日：2005-11-24

申请号：DE102004021985

申请日：2004-05-04

Applicant: BASF AG

Inventor： KASHANI-SHIRAZI NAWID ,  SIEGERT MARKUS ,  SIRCH TILMAN ,  KAIBEL BJOERN

IPC: B01J19/32 ,  B01D3/14