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公开(公告)号：JP2001010981A
公开(公告)日：2001-01-16
申请号：JP2000170202
申请日：2000-06-07
Applicant: BASF AG
Inventor： STROEFER ECKHARD , SCHOLL STEPHAN DR , HASSE HANS
IPC: B01D1/22 , C07B63/00 , C07C29/80 , C07C41/56 , C07C43/303 , C07C45/82 , C07C47/04 , C07C47/058
Abstract: PROBLEM TO BE SOLVED: To carry out a reaction while controlling the concentration of a specific composition in a mixture and control the selectivity of the chemical reaction by a method comprising the fractionation of a solution of a mixture of compounds of chemically equilibrium state and reacting the fractionated part with other compound. SOLUTION: A solution of a mixture of two or more kinds of compound of chemically equilibrium state is made to react, separately from a reaction of a polyoxymethylene glycol, formaldehyde monomer and/or a formaldehyde solution containing methylene glycol with aniline in the presence of an acid catalyst, with at least one kind of other compound 9. The reaction is carried out by (A) fractionating the mixture into at least two parts (the necessary part 5 and the remaining part 6) containing the different compounds in the mixture existing at a high concentration relative to the chemically equilibrium state by a separation method and (B) reacting a fractionated part 5 with the compound 9 by a main reactor 2 before the complete reforming of the chemical equilibrium to obtain the objective product 10.
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公开(公告)号：JPH11130727A
公开(公告)日：1999-05-18
申请号：JP21411198
申请日：1998-07-29
Applicant: BASF AG
Inventor： AUER HEINZ , KRUEGER SIEGFRIED , SCHOLL STEPHAN DR , WEBER THEODOR , MELDER JOHANN-PETER DR
Abstract: PROBLEM TO BE SOLVED: To provide a method for isolating NGH from a mixture comprising the NGH, a low boiling point and a high boiling point products, and an inorganic salt by which the pure NGH can be produced without generating an colored impurity in high yield and more simply than the conventional method, and good controls at every step can be enabled, and which is not so unstable that the interruption of the treatment is caused. SOLUTION: A mixture is fed to a wiping evaporator 3 in the first separation zone comprising the wiping evaporator 3 and a heat-exchanger 6, and a mixed material flow comprising a high boiling point product and an inorganic salt is discharged as a bottom product. The distillate flow is fed to the heat-exchanger 6 and the condensed product flow formed at the heat-exchanger 6 is fed to a rectifier 8 in the second separating zone comprising the rectifier 8, a second evaporator 17, the heat-exchanger 10. The distillate from the rectifier 8 is condensed at the heat-exchanger 10 and the condensed material flow is taken out as a low boiling point product flow. NGH is condensed as a side flow distillate, and a bottom product flow comprising the NGH and the high boiling point product is fed to the second evaporator 17. The discharged flow from the second evaporator 17 is recycled and returned to a lower zone of the rectifier.
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公开(公告)号：ES2169889T3
公开(公告)日：2002-07-16
申请号：ES98112986
申请日：1998-07-13
Applicant: BASF AG
Inventor： AUER HEINZ , KRUGER SIEGFRIED , SCHOLL STEPHAN DR , WEBER THEODOR , MELDER JOHANN-PETER DR
Abstract: Recovery of neopentyl hydroxypivalate (I) from a mixture containing (I), products (II) of lower boiling point, products (III) of higher boiling point and inorganic salts (IV) is carried out in 2 separation stages. In stage (1), the mixture is fed to a wiped film evaporator; (III) and (IV) are discharged from the sump; and a vapor stream of (I), (II) and (III) is discharged via the top to a heat transfer unit, where it is condensed. In stage (2), the condensate is fed into a rectifying column with a second evaporator and heat transfer; a vapor stream of (II) is discharged at the top, condensed and optionally partly recycled as reflux and partly discharged; a vapor stream of (I) is discharged at the side and condensed; and a stream of (I) and (III) is discharged from the sump and (partly) passed to the second evaporator, the vapor from this evaporator being (partly) recycled to the lower zone of the column. Also claimed is the apparatus used.
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公开(公告)号：ES2209722T3
公开(公告)日：2004-07-01
申请号：ES00111802
申请日：2000-06-06
Applicant: BASF AG
Inventor： STRIFER ECKHARD DR , SCHOLL STEPHAN DR , HASSE HANS PROF DR
IPC: B01D1/22 , C07B63/00 , C07C29/80 , C07C41/56 , C07C43/303 , C07C45/82 , C07C47/04 , C07C47/058
Abstract: A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (a) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (b) reacting one fraction with the other reactant(s) before equilibrium is completely restored. A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (1) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (2) reacting one fraction with the other reactant(s) before equilibrium is completely restored. Excluded is the reaction of a formaldehyde solution, containing polyoxymethylene glycols and optionally monomeric formaldehyde and/or methylene glycol, with aniline in presence of an acid catalyst.
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Patent Agency Ranking
公开(公告)号：AT210626T
公开(公告)日：2001-12-15
申请号：AT98112986
申请日：1998-07-13
Applicant: BASF AG
Inventor： AUER HEINZ , KRUEGER SIEGFRIED , SCHOLL STEPHAN DR , WEBER THEODOR , MELDER JOHANN-PETER DR
Abstract: Recovery of neopentyl hydroxypivalate (I) from a mixture containing (I), products (II) of lower boiling point, products (III) of higher boiling point and inorganic salts (IV) is carried out in 2 separation stages. In stage (1), the mixture is fed to a wiped film evaporator; (III) and (IV) are discharged from the sump; and a vapor stream of (I), (II) and (III) is discharged via the top to a heat transfer unit, where it is condensed. In stage (2), the condensate is fed into a rectifying column with a second evaporator and heat transfer; a vapor stream of (II) is discharged at the top, condensed and optionally partly recycled as reflux and partly discharged; a vapor stream of (I) is discharged at the side and condensed; and a stream of (I) and (III) is discharged from the sump and (partly) passed to the second evaporator, the vapor from this evaporator being (partly) recycled to the lower zone of the column. Also claimed is the apparatus used.
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公开(公告)号：DE19602640A1
公开(公告)日：1997-07-31
申请号：DE19602640
申请日：1996-01-25
Applicant: BASF AG
Inventor： MOHR JUERGEN DR , VANSANT FRANS , POLT AXEL WERNER DR , SCHOLL STEPHAN DR , KRUEGER SIEGFRIED , STAATZ HARTMUT DR
Abstract: The invention concerns a method of vaporizing a fluid containing vaporizable oxidation-sensitive compounds in a vaporizer in which, for vaporization purposes, the fluid is brought into contact with a heated solid surface, direct contact between the resultant vapour phase and the heated solid surface being largely prevented. The invention further concerns a vaporizer comprising a heatable solid surface (16), a device (2, 3) for heating the solid surface, and a device (10) for feeding a fluid containing vaporizable compounds to the heatable solid surface. The fluid-feeding device is designed and disposed (12, 14, 18) in the vaporizer such that direct contact between the resultant vapour phase and the heatable solid surface is largely prevented.
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公开(公告)号：AT253543T
公开(公告)日：2003-11-15
申请号：AT00111802
申请日：2000-06-06
Applicant: BASF AG
Inventor： STROEFER ECKHARD DR , SCHOLL STEPHAN DR , HASSE HANS PROF DR
IPC: B01D1/22 , C07B63/00 , C07C29/80 , C07C41/56 , C07C43/303 , C07C45/82 , C07C47/04 , C07C47/058
Abstract: A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (a) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (b) reacting one fraction with the other reactant(s) before equilibrium is completely restored. A method for reacting a solution containing a mixture of at least two chemicals in chemical equilibrium with other chemical(s) involves: (1) separating the solution into at least two fractions, enriched in the various compounds relative to the equilibrium concentrations; and (2) reacting one fraction with the other reactant(s) before equilibrium is completely restored. Excluded is the reaction of a formaldehyde solution, containing polyoxymethylene glycols and optionally monomeric formaldehyde and/or methylene glycol, with aniline in presence of an acid catalyst.
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公开(公告)号：DE19733903A1
公开(公告)日：1999-02-11
申请号：DE19733903
申请日：1997-08-05
Applicant: BASF AG
Inventor： AUER HEINZ , KRUEGER SIEGFRIED , SCHOLL STEPHAN DR , WEBER THEODOR , MELDER JOHANN-PETER DR
Abstract: Recovery of neopentyl hydroxypivalate (I) from a mixture containing (I), products (II) of lower boiling point, products (III) of higher boiling point and inorganic salts (IV) is carried out in 2 separation stages. In stage (1), the mixture is fed to a wiped film evaporator; (III) and (IV) are discharged from the sump; and a vapor stream of (I), (II) and (III) is discharged via the top to a heat transfer unit, where it is condensed. In stage (2), the condensate is fed into a rectifying column with a second evaporator and heat transfer; a vapor stream of (II) is discharged at the top, condensed and optionally partly recycled as reflux and partly discharged; a vapor stream of (I) is discharged at the side and condensed; and a stream of (I) and (III) is discharged from the sump and (partly) passed to the second evaporator, the vapor from this evaporator being (partly) recycled to the lower zone of the column. Also claimed is the apparatus used.
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公开(公告)号：DE19542829A1
公开(公告)日：1997-05-22
申请号：DE19542829
申请日：1995-11-17
Applicant: BASF AG
Inventor： BESLING BERND , ZECK SEBASTIAN DR , PLUECKHAN JUERGEN DR , MAYER THOMAS , LOEFFLER ULRICH DR , SPIEGEL GUENTER DR , BALLENWEG RUBENS , BRUDI GERHARD , GIESELBERG KLAUS DR , HILPRECHT LUTZ DR , TERJUNG WINFRIED , AUER HEINZ , POLT AXEL WERNER DR , SCHOLL STEPHAN DR
IPC: B01D3/00 , B01D3/16 , C07D301/32 , C07D303/02 , C07D303/04 , B01D3/14
Abstract: A process is proposed for distilling ethylene oxide from a mixture containing ethylene oxide in a column at an absolute pressure of 2-10 bar and a temperature of 20-180 DEG C; pure ethylene oxide is removed at the top or through a side discharge in the column and distillation takes place in a column divided up internally into a number of successive zones with structured sheet metal packs or piles of fillers, one or more quenching systems located outside the column being allocated to said zones.
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