公开(公告)号：MY150587A

公开(公告)日：2014-01-30

申请号：MYPI20102811

申请日：2008-12-11

Applicant: BASF SE

Inventor： MARKUS SIEGERT ,  NEVEN LANG ,  JOACHIM THIEL ,  ECKHARD STROEFER ,  CHRISTOPH SIGWART

IPC: C07D323/06

Abstract: A PROCESS FOR PREPARING CRUDE TRIOXANE (1) HAVING A CONCENTRATION IN THE RANGE FROM 50 TO 75% BY WEIGHT OF TRIOXANE BY TRIMERIZATION OF FORMALDEHYDE FROM AN AQUEOUS FORMALDEHYDE SOLUTION (2) IN THE PRESENCE OF AN ACID CATALYST (3) AND CONCENTRATION OF THE TRIOXANE FROM THE REACTION MIXTURE FROM THE TRIMERIZATION BY DISTILLATION, WHEREIN - THE TRIMERIZATION OF THE FORMALDEHYDE AND THE CONCENTRATION OF THE TRIOXANE FROM THE REACTION MIXTURE FROM THE TRIMERIZATION ARE CARRIED OUT IN A SINGLE COLUMN (K) WHICH - IS DIVIDED BY A HORIZONTAL DIVIDING PLATE (T) INTO A LOWER COLUMN REGION (A) AND AN UPPER COLUMN REGION (B), WITH THE LOWER COLUMN REGION (A) AND THE UPPER COLUMN REGION (B) BEING CONNECTED BY AN EXTERNAL VAPOR LINE AND AN EXTERNAL LIQUID LINE, AND - A REACTIVE DISTILLATION IN WHICH THE FORMALDEHYDE IS TRIMERIZED TO TRIOXANE AND THE TRIOXANE IN THE REACTION MIXTURE IS CONCENTRATED TO THE SOLUBILITY LIMIT OF FORMALDEHYDE IS CARRIED OUT IN THE LOWER COLUMN REGION (A) AT A PRESSURE IN THE RANGE FROM 0.1 TO 0.5 MPa (1 TO 5 BAR) AND - A DISTILLATION IN WHICH THE TRIOXANE IS CONCENTRATED TO GIVE CRUDE TRIOXANE HAVING A CONCENTRATION IN THE RANGE FROM 50 TO 75% BY WEIGHT IS CARRIED OUT IN THE UPPER COLUMN REGION (B) AT A PRESSURE IN THE RANGE FROM 0.02 TO 0.09 MPa (200 TO 900 MBAR), IS PROPOSED. (FIGURE 1)

公开(公告)号：BRPI0614142A2

公开(公告)日：2018-12-26

申请号：BRPI0614142

申请日：2006-07-19

Applicant: BASF SE

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

IPC: C07D323/06

Abstract: processo integrado para preparar trioxano a partir de formaldeído a invenção refere-se a um processo integrado para preparar trioxano a partir de formaldeído, compreendendo as etapas de a) alimentar uma corrente a1 compreendendo água e formaldeído e uma corrente de reciclo b2 consistindo essencialmente de água e formaldeído para um reator de síntese de trioxano, e deixando as mesmas reagir para obter uma corrente de produto a2 compreendendo trioxano água e formaldeído; b) alimentar a corrente a2 para uma primeira coluna de destilação de pressão baixa e destilar a mesma a uma pressão de 0,1 a 2,5 bar para obter uma corrente b1 que foi enriquecida em trioxano e adicionalmente compreende água e formaldeído e a corrente de reciclo b2 que consiste essencialmente de formaldeído e água; c) alimentar a corrente b 1 e uma corrente de reciclo d 1 que compreende trioxano, água e formaldeído para uma segunda coluna de destilação de pressão baixa e destilar as mesmas a uma pressão de 0,1 a 2,5 bar para obter uma corrente c 1 compreendendo predominantemente trioxano e adicionalmente formaldeído e água, e uma corrente c2 consistindo essencialmente de formaldeído e água; d) alimentar a corrente c 1 para uma coluna de destilação de pressão elevada e destilar a mesma a uma pressão de 0,2 a 17,5 bar para obter a corrente de reciclo d1 e uma corrente de produto d2 consistindo essencialmente de trioxano, em que uma remoção dos produtos de baixo ponto de ebulição presentes nas correntes b 1 e/ ou c 1 pode ser realizada entre as etapas b) e c) ou c) e d).

公开(公告)号：MY149303A

公开(公告)日：2013-08-30

申请号：MYPI20085026

申请日：2007-06-11

Applicant: BASF SE

Inventor： MARKUS SIEGERT ,  NEVEN LANG ,  ECKHARD STROEFER ,  CHRISTOPH SIGWART

IPC: C07D323/06

Abstract: INTEGRATED METHOD FOR THE PREPARATION OF TRIOXANE FROM FORMALDEHYDE, COMPRISING THE STEPS: A) INTRODUCTION OF A FEEDING FLOW (A1) CONTAINING FORMALDEHYDE AND WATER AND A RETURN FLOW (B3) CONSISTING ESSENTIALLY OF FORMALDEHYDE AND TRIOXANE INTO A FORMALDEHYDE CONCENTRATION UNIT, WHEREIN SAID FLOWS ARE SEPARATED INTO A FORMALDEHYDE-RICH FLOW (A2) AND A FLOW (A3) CONSISTING ESSENTIALLY OF WATER; B) INTRODUCTION OF A PRODUCT FLOW (C1), CONTAINING TRIOXANE, WATER, AND FORMALDEHYDE, A RETURN FLOW (E1) CONTAINING TRIOXANE, WATER, AND FORMALDEHYDE, AND POSSIBLY FLOW (A2) INTO A FIRST LOW-PRESSURE DISTILLATION COLUMN, WHEREIN SAID FLOWS ARE DISTILLED AT A PRESSURE OF FROM 0.01 TO 0.15 MPA (0.1 TO 1.5 ATMOSPHERES), WITH A TRIOXANE-ENRICHED FLOW (B1) CONTAINING PREDOMINANTLY TRIOXANE, AND ALSO WATER AND FORMALDEHYDE, A SLOUGH REMOVAL FLOW (B2) CONSISTING ESSENTIALLY OF FORMALDEHYDE AND WATER, AND THE RETURN FLOW (B3) CONTAINING PREDOMINANTLY WATER, AND ALSO FORMALDEHYDE AND TRIOXANE REMOVED AS A SIDE REMOVAL FLOW; C) INTRODUCTION OF A SLOUGH REMOVAL FLOW (B2) AND POSSIBLY THE FLOW (A2) INTO A TRIOXANE SYNTHESIS REACTOR, WHEREIN SAID FLOWS ARE ALLOWED TO REACT, AND WHEREIN THE FLOW (C1) CONTAINING TRIOXANE, WATER, AND FORMALDEHYDE IS OBTAINED; D) INTRODUCTION OF A FLOW (B1) INTO A MID-PRESSURE DISTILLATION COLUMN, WHEREIN SAID FLOW IS DISTILLED AT A PRESSURE OFFROM 0.10 TO 0.30 MPA (1.0 TO 3.0 ATMOSPHERES), WHEREIN A LOW BOILER STREAM (D1) CONTAINING METHANOL, METHYLAL, AND METHYLFORMATE, AND A STREAM (D2) CONTAINING PREDOMINANTLY TRIOXANE AND ALSO FORMALDEHYDE AND WATER ARE OBTAINED; E) INTRODUCTION OF A STREAM (D2) INTO A HIGH-PRESSURE DISTILLATION COLUMN, WHEREIN SAID STREAM IS DISTILLED AT A PRESSURE OF FROM 0.25 TO 1.01 MPA (2.5 TO 10.0 ATMOSPHERES), WHEREIN THE RETURN FLOW (E1) CONTAINS TRIOXANE, WATER, AND FORMALDEHYDE, AND A PRODUCT FLOW (E2) CONSISTING ESSENTIALLY OF TRIOXANE IS OBTAINED; WHEREIN FLOW (A2) CAN BE INTRODUCED INTO EITHER THE LOW-PRESSURE DISTILLATION COLUMN OR INTO THE TRIOXANE-35 SYNTHESIS REACTOR, OR INTO BOTH.

公开(公告)号：MY153212A

公开(公告)日：2015-01-29

申请号：MYPI20092955

申请日：2008-01-23

Applicant: BASF SE

Inventor： NEVEN LANG ,  JOACHIM THIEL ,  ECKHARD STROEFER ,  JULIA KIRSCHBAUM ,  MARKUS SIEGERT

IPC: B01D3/14

Abstract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

公开(公告)号：MY151105A

公开(公告)日：2014-04-15

申请号：MYPI20102295

申请日：2008-12-11

Applicant: BASF SE

Inventor： MARKUS SIEGERT ,  TOBIAS KORTEKAMP ,  ECKHARD STROEFER ,  CHRISTOPH SIGWART ,  NEVEN LANG

IPC: C08G2/10

Abstract: A PROCESS FOR PREPARING POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS (7) BY HOMOPOLYMERIZATION OR COPOLYMERIZATION OF TRIOXANE, STARTING FROM METHANOL (1), IN WHICH METHANOL (1) IS OXIDIZED IN A FIRST REACTOR IN A FIRST PRODUCTION PLANT (A) TO GIVE AN AQUEOUS FORMALDEHYDE-COMPRISING STREAM (2) WHICH IS FED TO A SECOND PRODUCTION PLANT (B) IN WHICH PURE TRIOXANE (6) IS OBTAINED AND REMOVAL OF LOW BOILERS (5) BY DISTILLATION IS CARRIED OUT AND THE PURE TRIOXANE (6) IS FED TO A THIRD PRODUCTION PLANT (C) IN WHICH IT IS HOMOPOLYMERIZED OR COPOLYMERIZED TO FORM POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS (7), WHEREIN THE LOW BOILER STREAM (5) FROM THE LOW BOILER REMOVAL COLUMN (K 2) IS RECYCLED TO THE FEED STREAM INTO THE FIRST REACTOR IN THE FIRST PRODUCTION PLANT (A), IS PROPOSED. (FIG. 1)

公开(公告)号：MY145876A

公开(公告)日：2012-05-15

申请号：MYPI20080545

申请日：2006-09-06

Applicant: BASF SE

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

IPC: C07D317/12

Abstract: A PROCESS FOR PREPARING DIOXOLANE BY REACTING ETHYLENE GLYCOL (1) WITH FORMALDEHYDE IN AQUEOUS SOLUTION (2) IN THE PRESENCE OF CATALYSTS, WHEREIN THE REACTION IS CARRIED OUT IN A REACTIVE DISTILLATION COLUMN (RDK), WITH THE STARTING MATERIALS ETHYLENE GLYCOL (1) AND AQUEOUS FORMALDEHYDE SOLUTION (2) BEING FED INTO THE REACTIVE DISTILLATION COLUMN (RDK) IN THE MIDDLE REGION OF THE COLUMN AND A DIOXOLANE-COMPRISING STREEM (3) BEING TAKEN OFF FROM THE UPPER REGION OF THE REACTIVE DISTILLATION COLUMN (RDK) AND A BOTTOM STREAM (4) COMPRISING COMPONENTS HAVING BOILING POINTS HIGHER THAN THAT OF DIOXOLANE BEING TAKEN OFF, IS PROPOSED.

公开(公告)号：ZA200802716B

公开(公告)日：2009-09-30

申请号：ZA200802716

申请日：2008-03-27

Applicant: BASF SE

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

IPC: C07D20090101

Abstract: Processes comprising: providing a reactive distillation column having an upper region, a middle region and a lower region; feeding ethylene glycol and an aqueous formaldehyde solution into the reactive distillation column in the middle region of the reactive distillation column; reacting the ethylene glycol and the aqueous formaldehyde solution in the reactive distillation column in the presence of a catalyst to form dioxolane; removing a product stream comprising dioxolane in an amount of at least 75% by weight from the upper region of the reactive distillation column; and removing a bottom stream comprising one or more components having boiling points higher than dioxolane from the lower region of the reactive distillation column.