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公开(公告)号：JPH10165710A
公开(公告)日：1998-06-23
申请号：JP33420197
申请日：1997-12-04
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER DR , RUHS ALEXANDER DR , PELGRIMS IVAN
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for avoiding or reducing formation of bubbles generated by a chemical and physical conversion precess in a liquid medium. SOLUTION: The substance conversion process is performed in a blowing-up reactor 1 which has not a built-in body and is provided with a tapered lower part and favorably provided with a conical lower part 3 and a gas injection device 6. The contents in the reactor 1 are sufficiently mixed by using jet circulation for blowing up the contents through gas injection. The device is equipped with a port 5 for discharging suspension containing plenty of solid matter in the tapered part. The blowing-up jet reactor 1 is provided with a pipe 8 which is terminated in the range of a formed bubble flow and used to introduce a liquid medium. Therefore, this method is specially suitable to execute a crystallization method.
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公开(公告)号：JPH10128099A
公开(公告)日：1998-05-19
申请号：JP26170097
申请日：1997-09-26
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER DR , RUHS ALEXANDER DR , PELGRIMS IVAN , KLASEN CLAAS-JUERGEN DR , KAISER LOTHAR
Abstract: PROBLEM TO BE SOLVED: To obtain two or more fraction having different particle distributions somewhat continuously. SOLUTION: Particulate matter is produced by a continuous fluidized bed spray granulation. In this case, the particulate matter is discharged by a discharge device having classifying effect by an area ratio of time integral of a discharge surface 'f' to floor area F of a fluidized bed causing periodic vibration. By decreasing the area ratio f/F, the vibration is controlled, and by further decreasing it, a change of a amplitude is increased. Fractions of different particle size distributions are obtained by fractionally removing particulate matter during one period. The area ratio f/F is 5 0/00-0.1 0/00.
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公开(公告)号：AT128951T
公开(公告)日：1995-10-15
申请号：AT94105353
申请日：1994-04-07
Applicant: DEGUSSA
Abstract: The invention relates to an improved process for producing sodium perborate monohydrate by dehydration of sodium perborate tetrahydrate in a fluidised bed by heated air. According to the invention, contact surfaces are arranged within the fluidised bed, the total area of which contact surfaces constitutes 1 - 500 times the area of the gas distribution plate of the fluidised bed. The contact surfaces are expediently designed as heat exchangers, the surface temperature of which is adjusted to 90 to 110@C. The process leads to a sodium perborate monohydrate having particularly high resistance to abrasion; at the same time the energy requirement is lower than in known processes.
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公开(公告)号：DE4316320A1
公开(公告)日：1994-11-17
申请号：DE4316320
申请日：1993-05-15
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER DR , RUHS ALEXANDER DR , KLASEN CLAAS-JUERGEN DR , ALT HANS-CHRISTIAN
Abstract: The invention relates to an improved process for producing sodium perborate monohydrate by dehydration of sodium perborate tetrahydrate in a fluidised bed by heated air. According to the invention, contact surfaces are arranged within the fluidised bed, the total area of which contact surfaces constitutes 1 - 500 times the area of the gas distribution plate of the fluidised bed. The contact surfaces are expediently designed as heat exchangers, the surface temperature of which is adjusted to 90 to 110@C. The process leads to a sodium perborate monohydrate having particularly high resistance to abrasion; at the same time the energy requirement is lower than in known processes.
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公开(公告)号：ES2161078T3
公开(公告)日：2001-11-16
申请号：ES99103463
申请日：1999-02-23
Applicant: DEGUSSA
Inventor： KOHLEN RAINER DR , KAISER LOTHAR , RUHS ALEXANDER DR , BERTSCH-FRANK BIRGIT DR
Abstract: A fluidized-bed reactor has a chamber (K1) supplied with a continuously sprayed liquid or slurry feed (8.1), a perforate floor for distribution of a fluidizing gas (11.1), an exhaust gas outlet (15.1), and a submerged solids-outlet duct allowing solids to be discharged from a point near the bottom of the bed, to form a moving seal plug of discharging material in the duct, in similar fashion to a siphon An Independent claim is included for: continuous production of coated granules by taking the base granules prepared in a first fluidized reactor chamber as the feed to a second fluidized bed, where a coating material is sprayed on to the granules.
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Patent Agency Ranking
公开(公告)号：AT196613T
公开(公告)日：2000-10-15
申请号：AT97120514
申请日：1997-11-22
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER DR , RUHS ALEXANDER DR , PELGRIMS IVAN
Abstract: Reducing or preventing foaming in chemical and physical transformation processes in liquid media comprises carrying out the transformation in a buoyancy-free jet reactor with no baffles, which has a tapered lower part and is fitted with a gas injector in a position which facilitates circulation without buoyancy. The reactor contents are thoroughly mixed by gas injection. Also claimed is an apparatus for the above process, with a pipe connection for taking off a high-solids suspension and an inlet tube for a liquid medium above the gas injector, the outlet of this tube being located in the cloud of bubbles formed when the apparatus is working.
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7.发明专利
公开(公告)号：DE19639579C1
公开(公告)日：1998-01-08
申请号：DE19639579
申请日：1996-09-26
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER DR , RUHS ALEXANDER DR , PELGRIMS IVAN , KLASEN CLAAS-JUERGEN DR , KAISER LOTHAR
Abstract: The process recovers two or more fractions of granules of differing size distribution, from a continuous fluidised bed spray granulator. Classification devices are used to extract the product. The granule residence time in the bed is held constant. At the same time, an area ratio is adjusted, enabling a periodic oscillation of the particle size distribution. This is the area ratio of the time integral of the extraction area (f) of the extractor(s), to the base area (F) of the bed. To increase the amplitude fluctuation between maximum and minimum mean granule diameter, the area ratio f/F is reduced in an interval. Then, maintaining this ratio, the granules are extracted in successive fractions, with differing size distributions. Also claimed is the apparatus for carrying out the above process.
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公开(公告)号：BR9801167A
公开(公告)日：1999-10-05
申请号：BR9801167
申请日：1998-04-24
Applicant: DEGUSSA
Inventor： KOHLEN RAINER DR , RUHS ALEXANDER DR , LEONHARDT WOLFGANG DR
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公开(公告)号：BR9706123A
公开(公告)日：1999-08-10
申请号：BR9706123
申请日：1997-12-03
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER DR , RUHS ALEXANDER DR , PELGRIMS IVAN
Abstract: Reducing or preventing foaming in chemical and physical transformation processes in liquid media comprises carrying out the transformation in a buoyancy-free jet reactor with no baffles, which has a tapered lower part and is fitted with a gas injector in a position which facilitates circulation without buoyancy. The reactor contents are thoroughly mixed by gas injection. Also claimed is an apparatus for the above process, with a pipe connection for taking off a high-solids suspension and an inlet tube for a liquid medium above the gas injector, the outlet of this tube being located in the cloud of bubbles formed when the apparatus is working.
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公开(公告)号：DE19650959A1
公开(公告)日：1998-06-10
申请号：DE19650959
申请日：1996-12-07
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER DR , RUHS ALEXANDER DR , PELGRIMS IVAN
IPC: B01D9/00 , B01D9/02 , B01D19/02 , B01J8/18 , B01J8/22 , B01J19/00 , C01B15/055 , C07C311/02 , C07B33/00
Abstract: Reducing or preventing foaming in chemical and physical transformation processes in liquid media comprises carrying out the transformation in a buoyancy-free jet reactor with no baffles, which has a tapered lower part and is fitted with a gas injector in a position which facilitates circulation without buoyancy. The reactor contents are thoroughly mixed by gas injection. Also claimed is an apparatus for the above process, with a pipe connection for taking off a high-solids suspension and an inlet tube for a liquid medium above the gas injector, the outlet of this tube being located in the cloud of bubbles formed when the apparatus is working.
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