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公开(公告)号：AU711473B2
公开(公告)日：1999-10-14
申请号：AU2372497
申请日：1997-05-30
Applicant: DEGUSSA
Inventor： HOFLER ANDREAS , ALT HANS-CHRISTIAN , KLASEN CLAAS-JURGEN , FRIEDRICH HEINZ , HERTZ ULRICH , MORL LOTHAR , SCHUTTE RUDIGER
Abstract: Preparation of a fermented sludge for use as an animal feed additive which contains a fermentation product, comprises granulation, compaction and drying of the sludge in a fluidised bed, at the same time as introducing extra mechanical energy above that needed to fluidise the bed particles, in order to achieve the desired additive particle size and bulk weight.
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公开(公告)号：AU3924997A
公开(公告)日：1998-04-02
申请号：AU3924997
申请日：1997-09-25
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER , RUHS ALEXANDER , PELGRIMS IVAN , KLASEN CLAAS-JURGEN , 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：ES2132914T5
公开(公告)日：2002-12-01
申请号：ES96911998
申请日：1996-04-03
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER , KLASEN CLAAS-JURGEN , BEWERSDORF MARTIN , ALT HANS-CHRISTIAN
Abstract: PCT No. PCT/EP96/01453 Sec. 371 Date Sep. 26, 1997 Sec. 102(e) Date Sep. 26, 1997 PCT Filed Apr. 3, 1996 PCT Pub. No. WO96/33009 PCT Pub. Date Oct. 24, 1996This invention relates to a process for the production of granulates by fluidized bed spray granulation and to a device for this purpose. Liquid starting materials may be converted into granulates by fluidized bed spray granulation. In order to ensure elevated material throughput, numerous nozzles, which are moreover susceptible to plugging and encrustation, must be installed. The disadvantages of known processes may be overcome according to the invention by arranging at least two spray nozzles at least partially directed towards each other in such a manner and the quantity of spray is adjusted in such a manner that their spray jets collide within the fluidized bed and substantially no liquid strike-through occurs onto a surface delimiting the fluidized bed or out of the fluidized bed. The spray jets of two spray nozzles directed towards each other collide frontally or enclose an angle of less than 180 DEG ; the angle is preferably between 150 DEG and 180 DEG . The device according to the invention comprises a flow channel (1) with laterally arranged spray nozzles (8), wherein in each case two exactly opposing or staggered spray nozzles are oriented in such a manner that the spray jets collide within the fluidized bed. Sodium percarbonate production is exemplfied.
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公开(公告)号：ES2132914T3
公开(公告)日：1999-08-16
申请号：ES96911998
申请日：1996-04-03
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER , KLASEN CLAAS-JURGEN , BEWERSDORF MARTIN , ALT HANS-CHRISTIAN
Abstract: PCT No. PCT/EP96/01453 Sec. 371 Date Sep. 26, 1997 Sec. 102(e) Date Sep. 26, 1997 PCT Filed Apr. 3, 1996 PCT Pub. No. WO96/33009 PCT Pub. Date Oct. 24, 1996This invention relates to a process for the production of granulates by fluidized bed spray granulation and to a device for this purpose. Liquid starting materials may be converted into granulates by fluidized bed spray granulation. In order to ensure elevated material throughput, numerous nozzles, which are moreover susceptible to plugging and encrustation, must be installed. The disadvantages of known processes may be overcome according to the invention by arranging at least two spray nozzles at least partially directed towards each other in such a manner and the quantity of spray is adjusted in such a manner that their spray jets collide within the fluidized bed and substantially no liquid strike-through occurs onto a surface delimiting the fluidized bed or out of the fluidized bed. The spray jets of two spray nozzles directed towards each other collide frontally or enclose an angle of less than 180 DEG ; the angle is preferably between 150 DEG and 180 DEG . The device according to the invention comprises a flow channel (1) with laterally arranged spray nozzles (8), wherein in each case two exactly opposing or staggered spray nozzles are oriented in such a manner that the spray jets collide within the fluidized bed. Sodium percarbonate production is exemplfied.
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公开(公告)号：TR9701209T1
公开(公告)日：1998-02-21
申请号：TR9701209
申请日：1996-04-03
Applicant: DEGUSSA
Inventor： SCHUTTE RUDIGER , KLASEN CLAAS-JURGEN , BEWERSDORF MARTIN , ALT HANS-CHRISTIAN
CPC classification number: C01B15/103 , B01J2/16
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Patent Agency Ranking
公开(公告)号：ES2103589T3
公开(公告)日：1997-09-16
申请号：ES94915105
申请日：1994-04-23
Applicant: DEGUSSA
Inventor： BEWERSDORF MARTIN , KLASEN CLAAS-JURGEN , LOOK-HERBER PETRA , BERTSCH-FRANK BIRGIT , LIESER THOMAS , MULLER KLAUS
Abstract: Sodium percarbonate of the formula 2 Na2CO3 3 H2O2 can be produced by fluidised-bed spray granulation by spraying an aqueous solution of sodium carbonate and a hydrogen peroxide solution on sodium percarbonate seeds and evaporating water. The previously necessary use of phosphorus-containing crystallisation inhibitor to prevent blockages and incrustations in and on the nozzle can be avoided by the invention if the solutions are sprayed using a single three-substance pulverisation nozzle with the external mixing of the solutions.
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公开(公告)号：AU7457394A
公开(公告)日：1995-03-22
申请号：AU7457394
申请日：1994-07-02
Applicant: DEGUSSA
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公开(公告)号：AU6647894A
公开(公告)日：1995-03-22
申请号：AU6647894
申请日：1994-04-23
Applicant: DEGUSSA
Inventor： BEWERSDORF MARTIN , KLASEN CLAAS-JURGEN , LOOK-HERBER PETRA , BERTSCH-FRANK BIRGIT , LIESER THOMAS , MULLER KLAUS
Abstract: Sodium percarbonate of the formula 2 Na2CO3 3 H2O2 can be produced by fluidised-bed spray granulation by spraying an aqueous solution of sodium carbonate and a hydrogen peroxide solution on sodium percarbonate seeds and evaporating water. The previously necessary use of phosphorus-containing crystallisation inhibitor to prevent blockages and incrustations in and on the nozzle can be avoided by the invention if the solutions are sprayed using a single three-substance pulverisation nozzle with the external mixing of the solutions.
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公开(公告)号：AU6207894A
公开(公告)日：1994-11-08
申请号：AU6207894
申请日：1994-02-28
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , KLASEN CLAAS-JURGEN , LIESER THOMAS , MULLER KLAUS , BEWERSDORF MARTIN
Abstract: PCT No. PCT/EP94/00576 Sec. 371 Date Oct. 2, 1995 Sec. 102(e) Date Oct. 2, 1995 PCT Filed Feb. 28, 1994 PCT Pub. No. WO94/24044 PCT Pub. Date Oct. 27, 1994Sodium percarbonate is often used in the form of coated particles to increase its storage stability in detergents. Sodium percarbonate particles coated in accordance with the invention have a coating containing reaction products from the reaction of a dialkali metal tetraborate or alkali metal pentaborate with aqueous hydrogen peroxide. Preferred coating components are: perborax with the formula Na2B4O7xH2O2, where n =2 or 4. The coated sodium percarbonate particles are produced by coating the percarbonate particles using a solution containing the reaction products mentioned above. Detergent, bleaching and cleaning compositions containing sodium percarbonate particles coated in accordance with the invention are distinguished by very high stability in storage.
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10.发明专利
公开(公告)号：ES2140143T5
公开(公告)日：2009-05-19
申请号：ES96939035
申请日：1996-11-14
Applicant: EVONIK DEGUSSA GMBH
Inventor： SCHUTTE RUDIGER , BEWERSDORF MARTIN , KLASEN CLAAS-JURGEN
Abstract: A FIN DE AUMENTAR SU ESTABILIDAD AL OXIGENO ACTIVO, SE RECUBRE PERCARBONATO SODICO CON UNA O MULTIPLES CAPAS DE VARIAS SUSTANCIAS. LAS PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS SEGUN LA INVENCION CONSISTEN EN UN NUCLEO DE PERCARBONATO SODICO GRANULADO POR ROCIADO EN LECHO FLUIDIZADO Y SULFATO SODICO, QUE PUEDE ESTAR PARCIALMENTE HIDRATADO, COMO UNICO CONSTITUYENTE DE UNA UNICA CAPA DE RECUBRIMIENTO. LAS PARTICULAS SEGUN LA INVENCION EXHIBEN TANTO UNA ELEVADA ESTABILIDAD AL OXIGENO ACTIVO COMO UNA MUY BUENA ENSILABILIDAD. LA CAPA DE RECUBRIMIENTO SE APLICA MEDIANTE ROCIADO DE UNA SOLUCION ACUOSA DE NA 2 SO 4 SOBRE LAS PARTICULAS A RECUBRIR, QUE FUERON A SU VEZ PRODUCIDAS MEDIANTE GRANULADO POR ROCIADO EN LECHO FLUIDIZADO, EN UN LECHO FLUIDIZADO Y VAPORIZANDO AGUA A UNA TEMPERATURA DEL LECHO FLUIDIZADO DE ENTRE 35 Y 100 (GRADOS) C.
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