公开(公告)号：DE69605945T3

公开(公告)日：2009-08-13

申请号：DE69605945

申请日：1996-11-14

Applicant: EVONIK DEGUSSA GMBH

Inventor： SCHUETTE RUEDIGER ,  BEWERSDORF MARTIN ,  KLASEN CLAAS-JUERGEN

IPC: C01B15/10 ,  C11D3/02 ,  C11D3/08 ,  C11D3/39 ,  C11D17/00

Abstract: In order to increase active oxygen stability, sodium percarbonate is coated with single or multiple layers of various substances. Sodium percarbonate particles consist of a core of sodium percarbonate fluidized bed spray granulate and sodium sulphate, which may be partially hydrated, as the sole constituent of a single coating layer. The particles exhibit both elevated active oxygen stability and very good ensilability. The coating layer is applied by spraying an aqueous Na2SO4 solution onto the particles to be coated, which were themselves produced by fluidized bed spray granulation, in a fluidized bed and vaporizing water at a fluidized bed temperature of 35 to 100 DEG C.

公开(公告)号：DE10331366A1

公开(公告)日：2005-01-27

申请号：DE10331366

申请日：2003-07-11

Applicant: DEGUSSA

Inventor： ALT CHRISTIAN ,  STOCKHAMMER STEFAN ,  MOLL MATTHIAS ,  POHLISCH JOACHIM ,  KLASEN CLAAS-JUERGEN

IPC: A23K1/00 ,  A23K1/16 ,  A23L29/281 ,  B01J2/16

Abstract: Granulation of feed additives, comprising amino acids and/or vitamins and optionally components of fermentation broths, is carried out in a circulating fluidized bed. An independent claim is included for granulated feed additives comprising 40-100 wt. % L-amino acids and up to 20 wt. % fermentation broth components and/or biomass formed during fermentation.

公开(公告)号：DE59405647D1

公开(公告)日：1998-05-14

申请号：DE59405647

申请日：1994-02-15

Applicant: DEGUSSA

Inventor： KLASEN CLAAS-JUERGEN ,  BERTSCH-FRANK BIRGIT ,  LIESER THOMAS ,  SCHUBERT PETER ,  MUELLER KLAUS

IPC: B01D12/00 ,  C01B15/10 ,  C11D3/39 ,  C11D17/00

Abstract: PCT No. PCT/EP94/00422 Sec. 371 Date Sep. 28, 1995 Sec. 102(e) Date Sep. 28, 1995 PCT Filed Feb. 15, 1994 PCT Pub. No. WO94/20413 PCT Pub. Date Sep. 15, 1994The invention relates to a method for increasing the storage stability of sodium percarbonate (2 Na2CO3.3 H2O2) by coating with a sodium perborate. According to the present invention wet sodium percarbonate salt, obtained by reacting sodium carbonate with hydrogen peroxide in aqueous phase and separating the salt from the aqueous phase, is treated with a solution or suspension containing sodium perborate in a solid-liquid separator by a kind of displacement wash. In contrast to previously known methods, according to the present invention a greater storage stability is attained with smaller quantities of perborate coating.

公开(公告)号：HU9700977A2

公开(公告)日：1997-12-29

申请号：HU9700977

申请日：1997-05-30

Applicant: DEGUSSA

Inventor： ALT HANS-CHRISTIAN ,  FRIEDRICH HEINZ ,  HERTZ ULRICH ,  HOEFLER ANDREAS ,  KLASEN CLAAS-JUERGEN ,  MOERL LOTHAR ,  SCHUETTE RUEDIGER

IPC: A23K1/165 ,  A23K1/00 ,  A23K1/16 ,  A23K1/20 ,  B01J2/16 ,  C12P13/04 ,  C12P29/00 ,  A23N17/00

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.

公开(公告)号：SI0716640T1

公开(公告)日：1997-10-31

申请号：SI9430060

申请日：1994-04-23

Applicant: DEGUSSA

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

IPC: B01J2/16 ,  C01B15/10

公开(公告)号：DE59403562D1

公开(公告)日：1997-09-04

申请号：DE59403562

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.

公开(公告)号：DE59402931D1

公开(公告)日：1997-07-03

申请号：DE59402931

申请日：1994-04-23

Applicant: DEGUSSA

Inventor： BEWERSDORF MARTIN ,  KLASEN CLAAS-JUERGEN ,  LOOK-HERBER PETRA ,  BERTSCH-FRANK BIRGIT ,  LIESER THOMAS ,  MUELLER 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.

公开(公告)号：FI960208A

公开(公告)日：1996-01-16

申请号：FI960208

申请日：1996-01-16

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 ,  C01B ,  C11D

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.

公开(公告)号：ZA946621B

公开(公告)日：1995-04-03

申请号：ZA946621

申请日：1994-08-30

Applicant: DEGUSSA

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

IPC: B01D1/20 ,  B01J2/04 ,  B01J2/16 ,  B05B7/06 ,  C01B15/10 ,  C01B ,  B01J ,  B05B

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.

公开(公告)号：ZA9406621B

公开(公告)日：1995-04-03

申请号：ZA9406621

申请日：1994-08-30

Applicant: DEGUSSA

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

IPC: B01D1/20 ,  B01J2/04 ,  B01J2/16 ,  B05B7/06 ,  C01B15/10 ,  C01B ,  B01J ,  B05B

CPC classification number: B05B7/061 ,  B01D1/20 ,  B01J2/04 ,  B01J2/16 ,  C01B15/103