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    SODIUM PERCARBONATE FLUID BED GRANULATED MATERIAL AND METHODFOR THE PRODUCTION THEREOF
    92.
    发明专利
    SODIUM PERCARBONATE FLUID BED GRANULATED MATERIAL AND METHODFOR THE PRODUCTION THEREOF 未知

    公开(公告)号：CA2423977A1

    公开(公告)日：2003-03-27

    申请号：CA2423977

    申请日：2001-08-03

    Applicant: DEGUSSA

    Inventor： JAKOB HARALD ,  BERTSCH-FRANK BIRGIT

    IPC: C01B15/10

    Abstract: The invention relates to a method for producing granular sodium percarbonate with a low TAM value by means of fluid bed granulation. According to the invention, during the fluid bed granulation, a magnesium compound in a quantity of 50 to 2000 ppm, especially 100 to 1000 ppm, and/or a complexing agent from the series of hydroxycarboxylic acids, aminophosphonic acids, phosphonocarboxylic acids, and hydroxyphosphonic acids, and the alkali salts , ammonium salts or magnesium salts thereof in a quantity of 50 to 2000 ppm, especially 200 to 1000 ppm, are added to the soda and/or H2O2 solution as stabilisers. Preferably, a combination of a magnesium compound in a quantity of 100 to 1000 ppm Mg2+ and water glass in a quantity of 0.1 to 1 wt. %, especially 0.1 to 0.5 wt. %, is used. In this way, it is possible to obtain granulated material having a TAM value of 6 .mu.W/g or below and a low dissolution time.

    93.
    发明专利
    未知

    公开(公告)号：AT207853T

    公开(公告)日：2001-11-15

    申请号：AT99919213

    申请日：1999-03-31

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRANK BIRGIT ,  BALDUF TORSTEN ,  BECKER-BALFANZ CATRIN ,  HEMME INA ,  ROLLMANN JUERGEN ,  SCHUETTE RUEDIGER ,  WILDNER WERNER

    IPC: B01J8/02 ,  C01B15/029

    Abstract: An aqueous solution of hydrogen peroxide is produced by direct synthesis from hydrogen and oxygen in the presence of a heterogeneous catalyst. According to the invention, a gas mixture comprising H2 and O2, essentially saturated or supersaturated with water (=containing fog) is fed into a reactor containing the catalyst. The volume ratio of the gas mixture fed in (standard liters per hour) to liquid removed (liters per hour) is adjusted to a value equal to or greater than 15,000, especially 20,000 to 50,000, and the gas mixture leaving the reactor is recycled after replenishment with H2, O2, and H2O vapor. Solutions with high H2O2 concentration can be obtained according to the invention without additional concentration.

    94.
    发明专利
    未知

    公开(公告)号：DE10009187A1

    公开(公告)日：2001-08-30

    申请号：DE10009187

    申请日：2000-02-26

    Applicant: DEGUSSA

    Inventor： BERTSCH-FRANK BIRGIT ,  HEMME INA ,  ROLLMANN JUERGEN ,  KATUSIC STIPAN ,  BALDUF TORSTEN ,  BECKER CATRIN ,  WILDNER WERNER ,  SCHUETTE RUEDIGER

    IPC: B01J23/40 ,  B01J27/13 ,  B01J37/22 ,  C01B15/029

    Abstract: The invention is relative to a method of producing hydrogen peroxide by direct synthesis in which hydrogen and oxygen are reacted in the presence of a heterogeneous, carrier-free or carrier-bound catalyst containing at least one noble metal in the presence or absence of a solvent and to a catalyst for carrying out the method. The use of a halide promoter and/or of a mineral acid can be avoided by using a noble-metal catalyst containing an inorganic iodine compound in an amount corresponding to 0.01 to 15% by weight iodine relative to the noble-metal content.

    98.
    发明专利
    未知

    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

    IPC: B01D1/20 ,  B01J2/04 ,  B01J2/16 ,  B05B7/06 ,  C01B15/10

    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.

    99.
    发明专利
    未知

    公开(公告)号：FI971859A0

    公开(公告)日：1997-04-30

    申请号：FI971859

    申请日：1997-04-30

    Applicant: DEGUSSA

    Inventor： BEWERSDORF MARTIN ,  BERTSCH-FRANK BIRGIT ,  KLASEN CLAAS-JUERGEN ,  LIESER THOMAS ,  SCHUETTE RUEDIGER

    IPC: C01B15/16 ,  C11D3/08 ,  C11D3/39 ,  C11D3/395 ,  C11D17/00 ,  C11D

    Abstract: The invention concerns washing, bleaching and cleaning agent compositions containing coated alkali metal percarbonate, in particular sodium percarbonate, and conventional components of such compositions, including in particular silicate-like builders. Compositions according to the invention, which have good stability during storage yet dissolve rapidly and thus render extension of the washing, bleaching or cleaning period unnecessary, contain an alkali metal percarbonate with an Oa* content in the composition of at least 70 %, a dissolution time of the alkali metal percarbonate in water of less than 10 minutes, determined under specific test conditions in each case, and a morphology index MI greater than 0.03, in particular greater than 0.04, in which: MI = 0.0448 . CV + 3.61 . 10 . d ; CV = sigma /d; sigma = 2ROOT SIGMA (di-d) .wi/100 and d = SIGMA di.wi/100.

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