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11.发明专利
公开(公告)号：AT65476T
公开(公告)日：1991-08-15
申请号：AT88106109
申请日：1988-04-16
Applicant: DEGUSSA
Inventor： RUHS ALEXANDER DR
IPC: B01J2/30 , C01B15/00 , C01B15/04 , C01B15/055 , C01B15/10
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公开(公告)号：DK0846486T3
公开(公告)日：2001-01-29
申请号：DK97120514
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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公开(公告)号：ES2078127T3
公开(公告)日：1995-12-01
申请号：ES94105353
申请日：1994-04-07
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER DR , RUHS ALEXANDER DR , KLASEN CLAAS-JURGEN 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：DE59400029D1
公开(公告)日：1995-11-16
申请号：DE59400029
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：DE3720277A1
公开(公告)日：1988-12-29
申请号：DE3720277
申请日：1987-06-19
Applicant: DEGUSSA
Inventor： RUHS ALEXANDER DR
IPC: B01J2/30 , C01B15/00 , C01B15/04 , C01B15/055 , C01B15/10
Abstract: Particulate, active-oxygen compounds, especially sodium percarbonate, tend to cake during storage, which makes it more difficult to handle them. The invention reduces this caking tendency while the active-oxygen content remains essentially unchanged. The method of achieving this comprises bringing the active-oxygen compound in contact with such an amount of an aqueous solution containing one or more phosphonic acid compounds capable of chelate complex formation that the weight ratio of active-oxygen compound to phosphonic acid compound is 100:0.1 to 100:10, preferably 100:1 to 100:3, and subsequent drying. Sodium percarbonate is used in particular as active-oxygen compound and 1-hydroxyethane-1,1-diphosphonic acid as a 3 to 30% by weight aqueous solution is used as phosphonic acid compound. Sodium percarbonate wet salt is preferably washed with this solution, freed of excess solution and dried. Percarbonate treated in this manner hardly tends to cake at all and exhibits a greater active-oxygen stability.
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Patent Agency Ranking
公开(公告)号：GR3035042T3
公开(公告)日：2001-03-30
申请号：GR20000402729
申请日：2000-12-12
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：ES2152617T3
公开(公告)日：2001-02-01
申请号：ES97120514
申请日：1997-11-22
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER 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：DE19717732C1
公开(公告)日：1998-10-01
申请号：DE19717732
申请日：1997-04-26
Applicant: DEGUSSA
Inventor： KOHLEN RAINER DR , LEONHARDT WOLFGANG DR , RUHS ALEXANDER DR
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19.发明专利
公开(公告)号：GR3002383T3
公开(公告)日：1992-12-30
申请号：GR910401077
申请日：1991-07-25
Applicant: DEGUSSA
Inventor： RUHS ALEXANDER DR
IPC: B01J2/30 , C01B15/00 , C01B15/04 , C01B15/055 , C01B15/10
Abstract: Particulate, active-oxygen compounds, especially sodium percarbonate, tend to cake during storage, which makes it more difficult to handle them. The invention reduces this caking tendency while the active-oxygen content remains essentially unchanged. The method of achieving this comprises bringing the active-oxygen compound in contact with such an amount of an aqueous solution containing one or more phosphonic acid compounds capable of chelate complex formation that the weight ratio of active-oxygen compound to phosphonic acid compound is 100:0.1 to 100:10, preferably 100:1 to 100:3, and subsequent drying. Sodium percarbonate is used in particular as active-oxygen compound and 1-hydroxyethane-1,1-diphosphonic acid as a 3 to 30% by weight aqueous solution is used as phosphonic acid compound. Sodium percarbonate wet salt is preferably washed with this solution, freed of excess solution and dried. Percarbonate treated in this manner hardly tends to cake at all and exhibits a greater active-oxygen stability.
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公开(公告)号：DE3863850D1
公开(公告)日：1991-08-29
申请号：DE3863850
申请日：1988-04-16
Applicant: DEGUSSA
Inventor： RUHS ALEXANDER DR
IPC: B01J2/30 , C01B15/00 , C01B15/04 , C01B15/055 , C01B15/10
Abstract: Particulate, active-oxygen compounds, especially sodium percarbonate, tend to cake during storage, which makes it more difficult to handle them. The invention reduces this caking tendency while the active-oxygen content remains essentially unchanged. The method of achieving this comprises bringing the active-oxygen compound in contact with such an amount of an aqueous solution containing one or more phosphonic acid compounds capable of chelate complex formation that the weight ratio of active-oxygen compound to phosphonic acid compound is 100:0.1 to 100:10, preferably 100:1 to 100:3, and subsequent drying. Sodium percarbonate is used in particular as active-oxygen compound and 1-hydroxyethane-1,1-diphosphonic acid as a 3 to 30% by weight aqueous solution is used as phosphonic acid compound. Sodium percarbonate wet salt is preferably washed with this solution, freed of excess solution and dried. Percarbonate treated in this manner hardly tends to cake at all and exhibits a greater active-oxygen stability.
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