公开(公告)号：DE19843721A1

公开(公告)日：2000-03-30

申请号：DE19843721

申请日：1998-09-23

Applicant: BASF AG

Inventor： ADRIAN TILL ,  HASSE HANS ,  VANSANT FRANS ,  THEIS GERHARD

IPC: C07C29/10 ,  C07D301/32 ,  C07D301/04

Abstract: The invention relates to a method for the continuous production of an aqueous ethylene oxide solution by absorbing ethylene oxide from a gaseous mixture containing 1.5 to 4 mole percent, preferably 2.5 to 3 mole percent of ethylene oxide in the wash water in an absorber. The mixture drawn directly from the absorber has a water/ethylene oxide weight ratio of 5 to 20, preferably of 10 to 15. The absorbed mixture is especially useful for directly feeding it to a secondary reactor for the production of glycol.

公开(公告)号：CA2345140A1

公开(公告)日：2000-03-30

申请号：CA2345140

申请日：1999-09-21

Applicant: BASF AG

Inventor： HASSE HANS ,  THEIS GERHARD ,  VANSANT FRANS ,  ADRIAN TILL ,  BESSLING BERND

IPC: C07C29/10 ,  C07C29/76 ,  C07C29/80 ,  C07C31/20

Abstract: The invention relates to a method for obtaining highly pure monoethylene glycol from the product of hydrolysis of ethylene oxide by distillation, by means of dehydration under pressure, preferably in a cascade, vacuum dehydration and subsequent pure distillation. According to the inventive method, the pressure dehydration column or at least the first pressure dehydration column of the cascade (2, 3, 4) has a stripping section with at least one separation stage, preferably 2-10 separation stages, especially 3- 6 stages, and in that part of the top flow of the dehydration column(s) (2, 3, 4) is sluiced out with the stripping section.

公开(公告)号：DE19703627A1

公开(公告)日：1998-08-06

申请号：DE19703627

申请日：1997-01-31

Applicant: BASF AG

Inventor： BESLING BERND ,  HASSE HANS ,  PLUECKHAN JUERGEN DR ,  MAYER THOMAS ,  AUER HEINZ

IPC: C07D301/32 ,  C07D303/04

Abstract: In a pure ethylene oxide distillation process, an aqueous mixture containing ethylene oxide, formaldehyde and at least 5 % by weight water is supplied via an inlet to a distillation device with at least one distillation column at a height above the column bottom of at least 8 theoretical stages. The ethylene oxide is removed at the head of the column and a mixture is obtained at the bottom of the column with less than 5 % by weight ethylene oxide.

公开(公告)号：CA2278574A1

公开(公告)日：1998-08-06

申请号：CA2278574

申请日：1998-01-29

Applicant: BASF AG

Inventor： MAYER THOMAS ,  AUER HEINZ ,  BESSLING BERND ,  HASSE HANS ,  PLUECKHAN JUERGEN

IPC: C07D301/32 ,  C07D303/04 ,  B01D3/32

Abstract: In a pure ethylene oxide distillation process, an aqueous mixture containing ethylene oxide, formaldehyde and at least 5 % by weight water is supplied via an inlet to a distillation device with at least one distillation column at a height above the column bottom of at least 8 theoretical stages. The ethylene oxide is removed at the head of the column and a mixture is obtained at the bottom of the column with less than 5 % by weight ethylene oxide.

公开(公告)号：CA2500046C

公开(公告)日：2013-01-29

申请号：CA2500046

申请日：2005-03-08

Applicant: BASF AG

Inventor： HOEFER FRANK ,  ASPRION NORBERT ,  CLAUSEN IVEN ,  HASSE HANS

IPC: B01J20/26 ,  B01D53/14 ,  B01J20/34 ,  C05F17/00 ,  C09K15/04

Abstract: A description is given of an absorption medium for deacidifying fluid streams which has improved oxidation stability and comprises at least one aliphatic amine, in particular an alkanolamine, and at least one non-hydroquinoid antioxidant. The absorption medium serves for deacidifying a fluid stream, in particular an oxygen-containing fluid stream, the fluid stream being brought into intimate contact with the absorption medium in at least one absorption step.

公开(公告)号：NO327850B1

公开(公告)日：2009-10-05

申请号：NO20023515

申请日：2002-07-23

Applicant: BASF AG

Inventor： AUER HEINZ ,  HAMMER HANS ,  BESSLING BERND ,  HASSE HANS ,  SAUER FRIEDRICH ,  WAGNER GERHARD ,  ADRIAN TILL ,  VICARI MAXIMILIAN

IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C22C14/00 ,  C22C38/00 ,  C22C38/42 ,  C22C38/44

Abstract: The invention relates to an apparatus and a process for the preparation of anhydrous or substantially anhydrous formic acid. This apparatus is constructed partly or entirely of substantially zirconium-free materials. The extractant employed is a liquid of the general formula I where the radicals R 1 and R 2 are alkyl, cycloalkyl, aryl or aralkyl groups, or R 1 and R 2 jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R 3 is hydrogen or a C 1 -C 4 -alkyl group. The apparatus has a synthesis reactor ( 6 ), a hydrolysis reactor ( 1 ), three distillation devices ( 2,4,5 ) and an extraction device ( 3 ).

公开(公告)号：NO20075864L

公开(公告)日：2008-03-05

申请号：NO20075864

申请日：2007-11-15

Applicant: BASF AG

Inventor： STROFER ECKHARD ,  HASSE HANS ,  BLAGOV SERGEJ

IPC: C07C41/50 ,  C07C43/30

Abstract: A process for preparing polyoxymethylene dialkyl ethers of the formula H2m+1CmO(CH2O)nCmH2m+1 where n=2-10, m, identically or differently,=1 or 2, in which a dialkyl ether selected from dimethyl ether, methyl ethyl ether and diethyl ether, and trioxane are fed into a reactor and reacted in the presence of an acidic catalyst, the amount of water introduced into the reaction mixture by the dialkyl ether, trioxane and/or the catalyst being

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.