-
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.
-
2.发明专利
公开(公告)号：PL185951B1
公开(公告)日：2003-09-30
申请号：PL32815897
申请日：1997-01-20
Applicant: BASF AG
Inventor： MOHR JUERGEN , VANSANT FRANS , POLT AXEL W , SCHOLL STEPHAN , KRUEGER SIEGFRIED , STAATZ HARTMUT
Abstract: PCT No. PCT/EP97/00245 Sec. 371 Date Jul. 24, 1998 Sec. 102(e) Date Jul. 24, 1998 PCT Filed Jan. 20, 1997 PCT Pub. No. WO97/26970 PCT Pub. Date Jul. 31, 1997The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact between the resulting vapor phase and the heated solid surface is substantially avoided. It also directed to an evaporator composed of a heatable solid surface (16), an apparatus (2, 3) for heating the solid surface and an apparatus (10) for feeding a liquid containing vaporizable compounds to the heatable solid surface, wherein the apparatus for feeding the liquid is designed and arranged in the evaporator in such a way (12, 14, 18) that direct contact between a resulting vapor phase and the heatable solid surface is substantially avoided.
-
3.发明专利
公开(公告)号：PL328158A1
公开(公告)日：1999-01-18
申请号：PL32815897
申请日：1997-01-20
Applicant: BASF AG
Inventor： MOHR JUERGEN , VANSANT FRANS , POLT AXEL WERNER , SCHOLL STEPHAN , KRUEGER SIEGFRIED , STAATZ HARTMUT
Abstract: PCT No. PCT/EP97/00245 Sec. 371 Date Jul. 24, 1998 Sec. 102(e) Date Jul. 24, 1998 PCT Filed Jan. 20, 1997 PCT Pub. No. WO97/26970 PCT Pub. Date Jul. 31, 1997The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact between the resulting vapor phase and the heated solid surface is substantially avoided. It also directed to an evaporator composed of a heatable solid surface (16), an apparatus (2, 3) for heating the solid surface and an apparatus (10) for feeding a liquid containing vaporizable compounds to the heatable solid surface, wherein the apparatus for feeding the liquid is designed and arranged in the evaporator in such a way (12, 14, 18) that direct contact between a resulting vapor phase and the heatable solid surface is substantially avoided.
-
公开(公告)号：DE59802407D1
公开(公告)日：2002-01-31
申请号：DE59802407
申请日：1998-07-13
Applicant: BASF AG
Inventor： AUER HEINZ , KRUEGER SIEGFRIED , SCHOLL DR , WEBER THEODOR , MELDER 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.
-
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.
-
Patent Agency Ranking
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.
-
公开(公告)号：CA2244271A1
公开(公告)日：1997-07-31
申请号：CA2244271
申请日：1997-01-20
Applicant: BASF AG
Inventor： VANSANT FRANS , MOHR JUERGEN , SCHOLL STEPHAN , KRUEGER SIEGFRIED , STAATZ HARTMUT , POLT AXEL WERNER
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.
-
公开(公告)号：DE3338488A1
公开(公告)日：1984-05-03
申请号：DE3338488
申请日：1983-10-22
Applicant: BASF AG
Inventor： KRUEGER SIEGFRIED , SAUER FRIEDRICH
Abstract: In the process, the temperature-sensitive product is recovered by separately discharging the thin layer evaporator effluent - separate from the circulation stream withdrawn from the distillation column. The advantages attained with the invention comprise in particular the reduction of the boiling point of the substance mixture to be separated and thus a thermally mild evaporation of temperature-sensitive substance mixtures.
-
公开(公告)号：DE59703791D1
公开(公告)日：2001-07-19
申请号：DE59703791
申请日：1997-01-20
Applicant: BASF AG
Inventor： MOHR JUERGEN , VANSANT FRANS , POLT WERNER , SCHOLL STEPHAN , KRUEGER SIEGFRIED , STAATZ HARTMUT
Abstract: PCT No. PCT/EP97/00245 Sec. 371 Date Jul. 24, 1998 Sec. 102(e) Date Jul. 24, 1998 PCT Filed Jan. 20, 1997 PCT Pub. No. WO97/26970 PCT Pub. Date Jul. 31, 1997The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact between the resulting vapor phase and the heated solid surface is substantially avoided. It also directed to an evaporator composed of a heatable solid surface (16), an apparatus (2, 3) for heating the solid surface and an apparatus (10) for feeding a liquid containing vaporizable compounds to the heatable solid surface, wherein the apparatus for feeding the liquid is designed and arranged in the evaporator in such a way (12, 14, 18) that direct contact between a resulting vapor phase and the heatable solid surface is substantially avoided.
-
公开(公告)号：BR9707072A
公开(公告)日：1999-07-20
申请号：BR9707072
申请日：1997-01-20
Applicant: BASF AG
Inventor： MOHR JUERGEN , VANSANT FRANS , POLT AXEL WERNER , SCHOLL STEPHAN , KRUEGER SIEGFRIED , STAATZ HARTMUT
Abstract: PCT No. PCT/EP97/00245 Sec. 371 Date Jul. 24, 1998 Sec. 102(e) Date Jul. 24, 1998 PCT Filed Jan. 20, 1997 PCT Pub. No. WO97/26970 PCT Pub. Date Jul. 31, 1997The invention relates to a process for evaporating a liquid containing vaporizable oxidation-sensitive compounds in an evaporator in which the liquid is brought into contact with a heated solid surface for evaporation, by a process in which direct contact between the resulting vapor phase and the heated solid surface is substantially avoided. It also directed to an evaporator composed of a heatable solid surface (16), an apparatus (2, 3) for heating the solid surface and an apparatus (10) for feeding a liquid containing vaporizable compounds to the heatable solid surface, wherein the apparatus for feeding the liquid is designed and arranged in the evaporator in such a way (12, 14, 18) that direct contact between a resulting vapor phase and the heatable solid surface is substantially avoided.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.021 seconds)
