公开(公告)号：ES2240197T3

公开(公告)日：2005-10-16

申请号：ES00975919

申请日：2000-10-26

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  GLENNEBERG JURGEN ,  WAGNER RUDOLF ,  CREUTZ MATTHIAS ,  SAUER JORG ,  VANHEERTUM RUDOLF

IPC: B01J8/02 ,  B01J10/00 ,  B01J23/44 ,  B01J35/02 ,  C01B15/023

Abstract: Procedimiento para la producción de peróxido de hidrógeno según el proceso de la antraquinona, que abarca una etapa de hidrogenación y una etapa de oxidación, en el que en la etapa de hidrogenación una solución de trabajo que contiene una antraquinona-soporte de reacción, y una fase gaseosa que contiene hidrógeno, se conducen a una temperatura de 10 a 100ºC y una presión de 0, 1 a 2 MPa, sobre un lecho fijo consistente en catalizador en forma de partículas dispuesto en un reactor de hidrogenación de forma de columna orientado verticalmente, caracterizado porque el reactor de hidrogenación se hace funcionar como columna de burbujeo, en que una mezcla de la solución de trabajo y fase gaseosa que contiene hidrógeno, se hace pasar con una velocidad de tubo vacío, de la solución de trabajo, de 8 a 100 m/h, de abajo hacia arriba.

公开(公告)号：DE50010007D1

公开(公告)日：2005-05-12

申请号：DE50010007

申请日：2000-10-26

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  GLENNEBERG JUERGEN ,  WAGNER RUDOLF ,  CREUTZ MATTHIAS ,  SAUER JOERG ,  VANHEERTUM RUDOLF

IPC: B01J8/02 ,  B01J10/00 ,  B01J23/44 ,  B01J35/02 ,  C01B15/023

Abstract: In carrying out the hydrogenation stage of the anthraquinone process for the preparation of hydrogen peroxide in a hydrogenation reactor on a fixed bed catalyst of a particulate catalyst, the service life of the catalyst is increased in that the working solution comprising the reaction carrier and a gas phase comprising hydrogen, are passed through the hydrogenation reactor from the bottom upwards. The empty tube speed of the working solution is 0.05 to 100 m/h, preferably 10 to 50 m/h.

公开(公告)号：NO20032469D0

公开(公告)日：2003-05-30

申请号：NO20032469

申请日：2003-05-30

Applicant: DEGUSSA

Inventor： NORDHOFF STEFAN ,  CREUTZ MATTHIAS ,  GROSS STEFAN ,  WAGNER RUDOLF

IPC: B01D9/02 ,  C01B15/013 ,  C01B

Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

公开(公告)号：PL204612B1

公开(公告)日：2010-01-29

申请号：PL37478003

申请日：2003-09-23

Applicant: DEGUSSA

Inventor： CREUTZ MATTHIAS ,  EICKHOFF HUBERTUS ,  MAURER BERNHARD

IPC: C01B15/023 ,  B01J8/22 ,  B01J23/44

公开(公告)号：CA2427710C

公开(公告)日：2009-12-22

申请号：CA2427710

申请日：2001-10-04

Applicant: DEGUSSA

Inventor： CREUTZ MATTHIAS ,  MOLLER ROLF-DIETER ,  GLENNEBERG JURGEN ,  WAGNER RUDOLF ,  NORDHOFF STEFAN

IPC: B01D9/02 ,  C01B15/013

Abstract: The invention is directed towards a process for the concentration of aqueous hydrogen peroxide, comprising discontinuous crystallisation. According to th e invention, a cooling surface arranged in a crystallising vessel and first wetted with hydrogen peroxide is cooled at a high cooling rate, whereupon se ed crystals form. The cooling rate is at least 1 K/s, preferably from 10 to 30 K/s. When the vessel has been filled with H2O2 starting material, the latter crystallises, starting from the seed crystals, and forms a crystal layer. Wh en the mother liquor of lower H2O2 concentration has been discharged, there follows a sweating operation with a slow increase in temperature, as a resul t of which the H2O2 concentration in the crystal layer is increased further.

公开(公告)号：BR0115811A

公开(公告)日：2003-09-16

申请号：BR0115811

申请日：2001-10-24

Applicant: DEGUSSA

Inventor： NORDHOFF STEFAN ,  CREUTZ MATTHIAS ,  GROSS STEFAN ,  WAGNER RUDOLF

IPC: B01D9/02 ,  C01B15/013

Abstract: A process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallization and after-treatment of the H2O2 crystals. The after-treatment takes the form of countercurrent washing in a hydraulic or mechanical washing column with a packed crystal bed. Hydrogen peroxide is disclosed having a concentration of from 99.9 to 100 wt.% and a content of TOC, nitrate, phosphate, nickel and tin of in each case less than 4 mg/l.

公开(公告)号：NO20032469A

公开(公告)日：2003-07-30

申请号：NO20032469

申请日：2003-05-30

Applicant: DEGUSSA

Inventor： NORDHOFF STEFAN ,  CREUTZ MATTHIAS ,  GROSS STEFAN ,  WAGNER RUDOLF

IPC: B01D9/02 ,  C01B15/013 ,  C01B

CPC classification number: C01B15/013

公开(公告)号：NO20031991L

公开(公告)日：2003-05-02

申请号：NO20031991

申请日：2003-05-02

Applicant: DEGUSSA

Inventor： CREUTZ MATTHIAS ,  NORDHOFF STEFAN ,  WAGNER RUDOLF ,  GLENNEBERG JUERGEN ,  MOELLER ROLF-DIETER

IPC: B01D9/02 ,  C01B15/013

公开(公告)号：BR0015363A

公开(公告)日：2002-06-18

申请号：BR0015363

申请日：2000-10-26

Applicant: DEGUSSA

Inventor： HAAS THOMAS ,  GLENNEBERG JUERGEN ,  WAGNER RUDOLF ,  CREUTZ MATTHIAS ,  SAUER JOERG ,  VANHEERTUM RUDOLF

IPC: B01J8/02 ,  B01J10/00 ,  B01J23/44 ,  B01J35/02 ,  C01B15/023

Abstract: In carrying out the hydrogenation stage of the anthraquinone process for the preparation of hydrogen peroxide in a hydrogenation reactor on a fixed bed catalyst of a particulate catalyst, the service life of the catalyst is increased in that the working solution comprising the reaction carrier and a gas phase comprising hydrogen, are passed through the hydrogenation reactor from the bottom upwards. The empty tube speed of the working solution is 0.05 to 100 m/h, preferably 10 to 50 m/h.

公开(公告)号：PL374780A1

公开(公告)日：2005-10-31

申请号：PL37478003

申请日：2003-09-23

Applicant: DEGUSSA

Inventor： CREUTZ MATTHIAS ,  EICKHOFF HUBERTUS ,  MAURER BERNHARD

IPC: B01J8/22 ,  B01J23/44 ,  C01B15/023

Abstract: Continuous hydrogenation of a solution containing a compound capable of hydrogenation involves a heterogeneously catalyzed reaction using a hydrogen-containing gas with recycling of part of the H2-containing jet pump-compressed offgas to the reactor, the driving medium used in the jet pump being a liquid or gas component used in the reaction and the pressure of this medium being greater than the pressure at the entry of the compressed hydrogenation gas.