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    PROCESS FOR PRODUCING GRANULATE BY SPRAY GRANULATION IN FLUIDIZED BED AND APPARATUS FOR MAKING THE SAME
    32.
    发明专利
    PROCESS FOR PRODUCING GRANULATE BY SPRAY GRANULATION IN FLUIDIZED BED AND APPARATUS FOR MAKING THE SAME 未知

    公开(公告)号：CZ331397A3

    公开(公告)日：1998-05-13

    申请号：CZ331397

    申请日：1996-04-03

    Applicant: DEGUSSA

    Inventor： SCHUTTE RUDIGER ,  KLASEN CLAAS JURGEN ,  BEWERSDORF MARTIN ,  ALT HANS CHRISTIAN

    IPC: B01D1/18 ,  B01J2/04 ,  B01J2/16 ,  C01B15/10 ,  C01D7/38

    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.

    33.
    发明专利
    未知

    公开(公告)号：ES2113102T3

    公开(公告)日：1998-04-16

    申请号：ES94915106

    申请日：1994-04-23

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRANK BIRGIT ,  BEWERSDORF MARTIN ,  KLASEN CLAAS-JURGEN ,  LIESER THOMAS ,  MULLER KLAUS ,  ROLLMANN JURGEN

    IPC: C01B15/10 ,  C11D3/39 ,  C11D3/395 ,  C11D7/54 ,  C11D17/00

    Abstract: In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.

    34.
    发明专利
    未知

    公开(公告)号：DE59405122D1

    公开(公告)日：1998-02-26

    申请号：DE59405122

    申请日：1994-04-23

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRANK BIRGIT ,  BEWERSDORF MARTIN ,  KLASEN CLAAS-JUERGEN ,  LIESER THOMAS ,  MUELLER KLAUS ,  ROLLMANN JUERGEN

    IPC: C01B15/10 ,  C11D3/39 ,  C11D3/395 ,  C11D7/54 ,  C11D17/00

    Abstract: In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.

    35.
    发明专利
    未知

    公开(公告)号：AT156096T

    公开(公告)日：1997-08-15

    申请号：AT94909085

    申请日：1994-02-28

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRANK BIRGIT ,  KLASEN CLAAS-JUERGEN ,  LIESER THOMAS ,  MUELLER KLAUS ,  BEWERSDORF MARTIN

    IPC: C01B15/10 ,  C02F1/00 ,  C11D3/39 ,  C11D3/395 ,  C11D17/00

    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.

    38.
    发明专利
    未知

    公开(公告)号：FI954808A0

    公开(公告)日：1995-10-09

    申请号：FI954808

    申请日：1995-10-09

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRANK BIRGIT ,  KLASEN CLAAS-JUERGEN ,  LIESER THOMAS ,  MUELLER KLAUS ,  BEWERSDORF MARTIN

    IPC: C01B15/10 ,  C02F1/00 ,  C11D3/39 ,  C11D3/395 ,  C11D17/00 ,  C01B ,  C11D

    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.

    PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS , PROCEDI- MIENTO PARA SU ELABORACION Y SU APLICACION
    39.
    发明专利
    PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS , PROCEDI- MIENTO PARA SU ELABORACION Y SU APLICACION 未知

    公开(公告)号：CO4180441A1

    公开(公告)日：1995-06-07

    申请号：CO94030864

    申请日：1994-07-14

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRAN FRANK ,  BEWERSDORF MARTIN ,  LIESER THOMAS ,  MULLER KLAUS HELMUT ,  ROLLMANN JURGEN

    IPC: C01B15/10 ,  C11D3/39 ,  C11D3/395 ,  C11D7/54 ,  C11D17/00

    Abstract: PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS, CON UN NUCLEO DE PERCARBONATO SODICO Y UN RECUBRIMIEN- TO CONTENIENDO CARBONATO SODICO, EL CUAL IMPORTA DE 0.5 HASTA 25% POR PESO (CALCULADO LIBRE DE HI- DRATOS) DEL PERCARBONATO SODICO, CARACTERIZADAS PORQUE EL RECUBRIENTO CONTIENE ADICIONALMENTE UNO O VARIOS COMPUESTOS DEL MAGNESIO DE LA SERIE DE LAS SALES DE ACIDO SULFURICO, ACIDO CLOFHIDRICO Y ACIDOS CARBOXILICOS CON 1 A 4 ATOMOS DE C O DE LOS PRODUCTOS DE REACCION DE LAS SALES NOMBRADAS CON EL CARBONATO SODICO Y/OTROS COMPONENTES DE RECU- BRIMIENTO PUEDEN ESTAR PARCIALMENTE HIDRATADOS Y PUEDEN ENCONTRARSE EL CARBONAATO SODICO Y UNO VA- RIOS COMPUESTOS DE MAGNESIO EN UNA SOLA CAPA O CA- PAS SEPARADAS DEL RECUBRIMIENTO. PROCEDIMIENTO PARA LA ELABORACION DE PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS SEGUN LAS REI- VINDICACIONES 1 A 5 POR APLICACION DE UN RECUBRI- MIENTO DE COMPONENTES SOLIDOS SOBRE LAS PARTICU- LAS DE PERCARBONATO SODICO, ABARCANDO EL PULVERI- ZADO DE UNA SOLUCION ACUOSA QUE CONTIENE UNO O VARIOS COMPONENTES DE RECUBRIMIENTO SOLIDOS SOBRE LA PARTICULA A RECUBRIR QUE SE ENCUENTRA EN LECHO FLUIDIZADO Y EVAPORACION DEL AGUA BAJO MANTENIMI- ENTO DE UNA TEMPERATURA EN LECHO FLUIDIZADO DE 30 HASTA 100 GRADOS CENTIGRADOS, CARACTERIZADO PORQUE SOBRE LA PARTICULA A RECUBRIR SE PULVERIZA SIMUL- TANEAMENTE O EN UNA SUCESION DESEADA POR LO MENOS UNA SOLUCION ACUOSA QUE CONTIENE CARBONATO SODICO Y POR LO MENOS UNA SAL DE MAGNESIO DE LA SERIE DEL SULFATO DE Mg , CLORURO DE Mg Y CARBOXILATO DE Mg DE UN ACIDO CARBOXILICO CON 1 HASTA 4 ATOMOS DE C, DONDE LA CANTIDAD TOTAL DE RECUBRIMIENTO APLICADA IMPORTA DE 0.5 HASTA 25% POR PESO (CALCULADO LIBRE DE HIDRATOS), REFERIDO AL PERCARBONATO SODICO. APLICACION DE LAS PARTICULAS DE PERCARBONATO SODI- CO RECUBIERTAS SEGUN LAS REIVINDICACIONES1 A 5 O OBTENIDO SEGUN UN PROCEDIMIENTO DE LAS REIVINDICA- CIONES 6 A 12 COMO COMPONENTE BLANQUEANTE EN PRO- DUCTOS DE LAVADO, DETERGENTES Y BLANQUEANTES, EN PARTICULAR EN PRODUCTOS DE LAVADO, DETERGENTES Y BLANQUANTES QUE CONTIENEN ZEOLITAS.

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