公开(公告)号：EP0687245B1

公开(公告)日：1998-04-08

申请号：EP94907569

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

CPC classification number: C01B15/106 ,  C11D3/3937 ,  C11D3/3942 ,  C11D17/0039

Abstract: The invention relates to a process for improving the storage stability of sodium percarbonate (2Na2CO3.3H2O2) by encasing it in sodium perborate. According to the invention, sodium percarbonate wet salt, obtained by the reaction of soda with hydrogen peroxide in the aqueous phase and separating the salt from the aqueous phase, is treated with a sodium perborate-containing solution or suspension in a solid-liquid separation device according to a process of displacement wash. The invention provides longer storage stability with a thinner perborate coating than prior art processes.

公开(公告)号：SK287336B6

公开(公告)日：2010-07-07

申请号：SK2232003

申请日：2001-08-02

Applicant: DEGUSSA ,  UHDE GMBH

Inventor： SCHUTTE RUDIGER ,  BALDUF TORSTEN ,  BECKER CATRIN ,  HEMME INA ,  BERTSCH-FRANK BIRGIT ,  WILDNER WERNER ,  ROLLMANN JURGEN ,  MARKOWZ GEORG

IPC: B01F5/00 ,  B01F5/04 ,  B01F13/00 ,  B01J3/00 ,  B01J3/04 ,  B01J8/00 ,  B01J8/02 ,  B01J19/00 ,  B01J19/24 ,  C01B15/00 ,  C01B15/029 ,  C07B61/00 ,  C07C45/00 ,  C07C45/35 ,  C07C47/00 ,  C07C47/21 ,  C07C47/22 ,  C07C51/00 ,  C07C51/25 ,  C07C57/00 ,  C07C57/04 ,  C07C57/05 ,  C07D301/00 ,  C07D301/12 ,  C07D303/04 ,  F28D9/00 ,  F28F3/12

Abstract: Reactions between at least two fluid reactants are performed in a reactor comprising wall elements (1), slot-shaped reaction spaces (3) and cavities (5) for conducting a fluid heat carrier through. Depending on the process and throughput, a modular structural design is chosen wherein an arbitrary number of wall elements (1) are assembled to a right-parallelepipedal block (24), the reaction spaces (3) are formed between lateral surfaces (2) of right-parallelepipedal wall elements (1), the reactants are introduced into the reaction spaces (3) from edge regions of one side of the block (24) and are conducted through the reaction spaces (3) in parallel flows and the fluid heat-carrier is conducted through the tubular cavities (5) extending in the interior of the wall elements (1).

公开(公告)号：CA2423977C

公开(公告)日：2009-10-20

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.

公开(公告)号：GC0000236A

公开(公告)日：2006-03-29

申请号：GCP20011598

申请日：2001-08-28

Applicant: DEGUSSA

Inventor： SCHUTTE RUDIGER ,  BALDUF TORSTEN ,  BECKER CATRIN ,  HEMME INA ,  BERTSCH-FRANK BIRGIT ,  WILDNER WERNER ,  ROLLMANN JURGEN ,  MARKOWZ GEORG

IPC: B01F5/00 ,  B01F5/04 ,  B01F13/00 ,  B01J3/04 ,  B01J8/00 ,  B01J8/02 ,  B01J19/00 ,  B01J19/24 ,  C01B15/029 ,  C07B61/00 ,  C07C45/35 ,  C07C47/21 ,  C07C47/22 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07D301/12 ,  C07D303/04 ,  F28D9/00 ,  F28F3/12

Abstract: Two reactants are introduced into a slot-shaped reaction space (3) of a reactor. The space is formed between lateral surfaces (2) of two equally large and right parallelepipedal wall elements (1) comprising solid plates. The reactants are introduced from the edge of the slot-shaped reaction spaces situated on the same side of the block. Two reactants are introduced into a slot-shaped reaction space of a reactor. The spaces are formed between lateral surfaces of two equally large and right parallelepipedal wall elements comprising solid plates. The wall elements are arranged interchangeably in a block within the virtual parallelepiped. The reactants are introduced from edge regions of the slot-shaped reaction spaces situated on the same side of the block. The reactants are conducted as a reaction mixture through the reaction spaces in the same direction in parallel flows. A fluid heat exchange medium is conducted through tubular cavities (5) extending in the interior of the wall elements to obtain the desired reaction. An independent claim is also included for apparatus comprising the reactor in which the slot-shaped reaction spaces are capable of having the reactants supplied from the same side of the block. The reaction spaces are oriented to guide the reaction mixture in the same direction in parallel flows.

公开(公告)号：DE50107771D1

公开(公告)日：2005-11-24

申请号：DE50107771

申请日：2001-08-03

Applicant: DEGUSSA

Inventor： JAKOB HARALD ,  BERTSCH-FRANK BIRGIT

IPC: C01B15/10

Abstract: The invention relates to a process for the production, by fluid-bed spray granulation, of granular sodium percarbonate having a low TAM value. According to the invention, in the fluid-bed spray granulation, an Mg compound in a quantity of 50 to 2,000 ppm, in particular 100 to 1,000 ppm, or/and a complexing agent from among the hydroxycarboxylic acids, aminocarboxylic acids, aminophosphonic acids and phosphonocarboxylic acids, hydroxyphosphonic acids and their alkali metal salts, ammonium salts or Mg salts, in a quantity of 50 to 2,000 ppm, in particular 200 to 1,000 ppm, are added as stabilisers to the soda solution and/or H 2 O 2 solution. Preferably a combination of an Mg compound in a quantity of 100 to 1,000 ppm Mg 2+ and waterglass in a quantity of 0.1 to 1 wt. %, in particular 0.1 to 0.5 wt. %, is used, and in this case granules having a TAM value of about or below 6 muW/g and simultaneously a short dissolving time, are obtainable.

公开(公告)号：AU7979801A

公开(公告)日：2002-03-13

申请号：AU7979801

申请日：2001-08-02

Applicant: DEGUSSA

Inventor： SCHUTTE RUDIGER ,  BALDUF TORSTEN ,  BECKER CATRIN ,  HEMME INA ,  BERTSCH-FRANK BIRGIT ,  WILDNER WERNER ,  ROLLMANN JURGEN ,  MARKOWZ GEORG

IPC: B01F5/00 ,  B01F5/04 ,  B01F13/00 ,  B01J3/04 ,  B01J8/00 ,  B01J8/02 ,  B01J19/00 ,  B01J19/24 ,  C01B15/029 ,  C07B61/00 ,  C07C45/35 ,  C07C47/21 ,  C07C47/22 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07D301/12 ,  C07D303/04 ,  F28D9/00 ,  F28F3/12

Abstract: Two reactants are introduced into a slot-shaped reaction space (3) of a reactor. The space is formed between lateral surfaces (2) of two equally large and right parallelepipedal wall elements (1) comprising solid plates. The reactants are introduced from the edge of the slot-shaped reaction spaces situated on the same side of the block. Two reactants are introduced into a slot-shaped reaction space of a reactor. The spaces are formed between lateral surfaces of two equally large and right parallelepipedal wall elements comprising solid plates. The wall elements are arranged interchangeably in a block within the virtual parallelepiped. The reactants are introduced from edge regions of the slot-shaped reaction spaces situated on the same side of the block. The reactants are conducted as a reaction mixture through the reaction spaces in the same direction in parallel flows. A fluid heat exchange medium is conducted through tubular cavities (5) extending in the interior of the wall elements to obtain the desired reaction. An independent claim is also included for apparatus comprising the reactor in which the slot-shaped reaction spaces are capable of having the reactants supplied from the same side of the block. The reaction spaces are oriented to guide the reaction mixture in the same direction in parallel flows.

公开(公告)号：CA2420622A1

公开(公告)日：2002-03-07

申请号：CA2420622

申请日：2001-08-02

Applicant: DEGUSSA ,  UHDE GMBH

Inventor： MARKOWZ GEORG ,  BERTSCH-FRANK BIRGIT ,  SCHUTTE RUDIGER ,  BALDUF TORSTEN ,  HEMME INA ,  BECKER CATRIN ,  WILDNER WERNER ,  ROLLMANN JURGEN

IPC: B01F5/00 ,  B01F5/04 ,  B01F13/00 ,  B01J3/04 ,  B01J8/00 ,  B01J8/02 ,  B01J19/00 ,  B01J19/24 ,  C01B15/029 ,  C07B61/00 ,  C07C45/35 ,  C07C47/21 ,  C07C47/22 ,  C07C51/25 ,  C07C57/04 ,  C07C57/05 ,  C07D301/12 ,  C07D303/04 ,  F28D9/00 ,  F28F3/12

Abstract: Reactions between at least two fluid reactants are performed in a reactor comprising wall elements (1), slot-shaped reaction spaces (3) and cavities ( 5) for conducting a fluid heat-carrier through. Depending on the process and throughput, a modular structural design is chosen wherein an arbitrary numbe r of wall elements (1) are assembled to a right-parallelepipedal block (24), t he reaction spaces (3) are formed between lateral surfaces (2) of right- parallelepipedal wall elements (1), the reactants are introduced into the reaction spaces (3) from edge regions of one side of the block (24) and are conducted through the reaction spaces (3) in parallel flows and the fluid he at- carrier is conducted through the tubular cavities (5) extending in the interior of the wall elements (1).

公开(公告)号：ES2165236T3

公开(公告)日：2002-03-01

申请号：ES99919213

申请日：1999-03-31

Applicant: DEGUSSA

Inventor： BERTSCH-FRANK BIRGIT ,  BALDUF TORSTEN ,  BECKER-BALFANZ CATRIN ,  HEMME INA ,  ROLLMANN JURGEN ,  SCHUTTE RUDIGER

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.

公开(公告)号：CA2338104A1

公开(公告)日：2001-08-26

申请号：CA2338104

申请日：2001-02-23

Applicant: DEGUSSA

Inventor： SCHUTTE RUDIGER ,  HEMME INA ,  WILDNER WERNER ,  BALDUF TORSTEN ,  ROLLMANN JURGEN ,  BECKER CATRIN ,  KATUSIC STIPAN ,  BERTSCH-FRANK BIRGIT

IPC: B01J23/40 ,  B01J27/13 ,  B01J37/22 ,  C01B15/029 ,  B01J27/08

Abstract: The invention is relative to a method of producing hydrogen peroxide by dire ct 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 i n 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 usin g 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.

公开(公告)号：ID27454A

公开(公告)日：2001-04-12

申请号：ID20002315

申请日：1999-03-31

Applicant: DEGUSSA

Inventor： BERTSCH-FRANK BIRGIT ,  BALDUF TORSTEN ,  BECKER-BALFANZ CATRIN ,  HEMME INA ,  ROLLMANN JURGEN ,  SCHUTTE RUDIGER ,  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.