公开(公告)号：DE102007019597A1

公开(公告)日：2008-05-15

申请号：DE102007019597

申请日：2007-04-24

Applicant: BASF AG

Inventor： HAMMON ULRICH ,  FRIESE THORSTEN ,  PETZOLDT JOCHEN ,  MUELLER-ENGEL KLAUS JOACHIM ,  CREMER ULRICH ,  RAICHLE ANDREAS

IPC: C07C57/055

Abstract: Process for implementing a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or methacrolein to methacrylic acid in a solid catalyst bed comprises using a tube bundle reactor in reaction tube of a vertically arranged bundle of reaction tubes (9), which are closed by a reactor jacket; where: the both ends of the individual reaction tubes are open and each reaction tubes terminate with its upper end in a passage of a top tube plate sealed above in reactor jacket and with its lower end in a passage of a down tube plate (5) sealed below in reactor jacket. Process for implementing a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or methacrolein to methacrylic acid in a solid catalyst bed comprises using a tube bundle reactor in reaction tube of a vertically arranged bundle of reaction tubes (9), which are closed by a reactor jacket; where: the both ends of the individual reaction tubes are open and each reaction tubes terminate with its upper end in a passage of a top tube plate sealed above in reactor jacket and with its lower end in a passage of a down tube plate (5) sealed below in reactor jacket; the exterior of the reaction tubes, the top and the down tube plate, and the reactor jacket differentiate conjointly to the reaction tube surrounding chamber, and each of the two tube plates is spanned by at least a reactor cover (6) having an opening, with which, in order to set start-up in several respects, to the reaction tubes of the tube bundle reactor, at least an opening (3) in one of the both reactor covers supplies a reaction gas inlet mixture (1) containing >= 3 vol.% of acrolein or methacrolein and additionally molecular oxygen; at least an opening of the other reactor cover discharges by partial gas phase oxidation of the acrolein to acrylic acid or methacrolein to methacrylic acid, where the passage of the product gas mixture (2) containing acrylic acid or methacrylic acid results in the solid catalyst bed, which is present in the reaction tubes; at least a liquid heat exchange medium is supplied on the jacket side of the tube bundle reactor around the reaction tubes in such a manner that each of the two surfaces, which turned to each other, of the two tube plates is moistened by liquid heat exchange medium; the liquid heat exchange medium is inwardly introduced with a temperature T w(in) into the reaction tubes surrounding chamber and is outwardly emitted with the temperature T w(out) from the reaction tubes surrounding chamber; the temperature T w(in) of the liquid heat exchange medium, which moistens the tube plate spanned by the tube cover having the at least one opening, is at least 290[deg] C; the reaction gas inflow mixture entering into the opening has a temperature of = 285[deg] C, and the temperature of the surface of the reactor plate (4) turned to the reactor cover having at least an opening, has a value of = 285[deg] C.

公开(公告)号：NO20080303L

公开(公告)日：2008-02-29

申请号：NO20080303

申请日：2008-01-16

Applicant: BASF AG

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

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde; stream A2 is fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde; stream B1 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde; stream C1 is fed to a third distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water and formaldehyde.

公开(公告)号：NO20080303A

公开(公告)日：2008-02-29

申请号：NO20080303

申请日：2008-01-16

Applicant: BASF AG

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

IPC: C07D323/06

CPC classification number: C07D323/06 ,  Y02P20/125

公开(公告)号：NO20080315L

公开(公告)日：2008-02-27

申请号：NO20080315

申请日：2008-01-18

Applicant: BASF AG

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

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, 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 in which the formaldehyde is converted to trioxane to obtain a product stream A 2 comprising trioxane, water and formaldehyde. Stream A 2 and a recycle stream D 1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B 1 enriched in trioxane, and the stream B 2 consisting substantially of water and formaldehyde. Stream B 1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C 2 consisting substantially of trioxane, and a stream C 1 comprising trioxane, water and formaldehyde. Stream C 1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D 1 comprising trioxane, water and formaldehyde, and a stream D 2 consisting substantially of water.

公开(公告)号：NO20080315A

公开(公告)日：2008-02-27

申请号：NO20080315

申请日：2008-01-18

Applicant: BASF AG

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

IPC: C07D323/06

CPC classification number: C07D323/06 ,  Y02P20/125

公开(公告)号：BRPI0418083A

公开(公告)日：2007-04-17

申请号：BRPI0418083

申请日：2004-12-21

Applicant: BASF AG

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

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：DE102005037293A1

公开(公告)日：2007-02-15

申请号：DE102005037293

申请日：2005-08-08

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 in which a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde; stream A2 is fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde; stream B1 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde; stream C1 is fed to a third distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water and formaldehyde.

公开(公告)号：CA2617479A1

公开(公告)日：2007-02-15

申请号：CA2617479

申请日：2006-08-04

Applicant: BASF AG

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

IPC: C07D323/06

Abstract: The invention relates to an integrated process for preparing trioxane from formaldehyde in which a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde; stream A2 is fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde; stream B1 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde; stream C1 is fed to a third distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water and formaldehyde.

公开(公告)号：NO20062811A

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

CPC classification number: C07D323/06

公开(公告)号：DE102005010588A1

公开(公告)日：2006-05-24

申请号：DE102005010588

申请日：2005-03-08

Applicant: BASF AG

Inventor： CLYMO ANTHONY ,  DIEFENBACHER ARMIN ,  FRIESE THORSTEN ,  MARTAN HANS

IPC: C07C67/54 ,  C07C67/08 ,  C07C69/54

Abstract: Continuous preparation of alkyl ester of (meth)acrylic acid (A) comprises supplying (meth)acrylic acid, 1-5C alkanol and acid esterifying catalyst (a) to a reaction zone (5,6), adding the discharged reaction mixture from the zone to a catalyst separation unit (V), separating depleted main stream (56) and depleted sump stream (54) of (A) and (a), initiating (A) containing main stream into a rectification unit (I) and isolating streams of (A). Continuous preparation of alkyl ester of (meth) acrylic acid (A) comprises reaction of (meth) acrylic acid and 1-5C alkanol in homogeneous, liquid, solvent-free phase with increased temperature and in presence of a acidic esterifying catalyst, where (meth)acrylic acid, alkanol and acid esterified catalyst are supplied to a reaction zone (5,6) (that water formed during a retention time are separated rectificative as a component of a alkanol comprising mixture in one of the reaction zone mounted rectification unit (III), in which obtained distillate is isolated in a alkanol containing organic and a water containing aqueous phase, the organic phase is led back into the rectification unit (III) and the aqueous phase is removed, and a reaction mixture (21) are discharged from the reaction zone), where the reaction mixture discharged from the reaction zone is added to a catalyst separation unit (V) and the alkyl ester of (meth)acrylic acid containing in and at acidic esterified catalyst depleted main stream (56) and the predominant part of the acid esterified catalyst containing and at water depleted sump stream (54) are separated in the catalyst separation unit (V) and alkyl ester of (meth)acrylic acid containing main stream is initiated into a rectification unit (I) and the alkyl ester of (meth)acrylic acid containing in main stream (23) and a sump stream (52) are isolated under addition of water.