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公开(公告)号：DK0548499T3
公开(公告)日：1996-02-05
申请号：DK92118162
申请日：1992-10-23
Applicant: DEGUSSA
Inventor： BARENSCHEE ERNST-ROBERT DR , WEDEL WEDIGO VON , EICKHOFF HUBERTUS
Abstract: A process is described for the removal of nitrogen oxides from waste gases with the recovery of nitric acid or a nitrate solution. The waste gas is reacted with hydrogen peroxide in an amount appropriate to the desired degree of removal of nitrogen oxides, on a catalyst, at a temperature of less than 800 DEG C., preferably in the range of 20 DEG to 100 DEG C., to give the valuable product, nitric acid or a nitrate solution. This may be done in accordance with the invention by bringing the hydrogen peroxide as a solution, i.e., in the liquid phase, into contact with the catalyst through which the waste gas is flowing. The reaction product is either utilized in a gaseous form or processed to nitric acid or a nitrate solution. Alternatively, the hydrogen peroxide may be introduced in a gaseous form, using a honeycombed catalyst, and wherein the hydrogen peroxide is present in at least one half of the stoichiometrically determined amount. Regardless of whether the hydrogen peroxide is introduced in a liquid or vapor form, the resulting nitric acid solution may be scrubbed, preferably with a nitrate salt solution, to provide the concentrated product.
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公开(公告)号：HUT70699A
公开(公告)日：1995-10-30
申请号：HU9501244
申请日：1995-04-28
Applicant: DEGUSSA
Inventor： MOELLER ALEXANDER , SCHELBERT ULRICH , WECK MANFRED , EICKHOFF HUBERTUS
IPC: A62D3/38 , A62D101/22 , A62D101/28 , B09B3/00 , C08J11/00 , A62D3/00
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公开(公告)号：AT127707T
公开(公告)日：1995-09-15
申请号：AT92118162
申请日：1992-10-23
Applicant: DEGUSSA
Inventor： VON WEDEL WEDIGO , BARENSCHEE ERNST-ROBERT DR , EICKHOFF HUBERTUS
Abstract: A process is described for the removal of nitrogen oxides from waste gases with the recovery of nitric acid or a nitrate solution. The waste gas is reacted with hydrogen peroxide in an amount appropriate to the desired degree of removal of nitrogen oxides, on a catalyst, at a temperature of less than 800 DEG C., preferably in the range of 20 DEG to 100 DEG C., to give the valuable product, nitric acid or a nitrate solution. This may be done in accordance with the invention by bringing the hydrogen peroxide as a solution, i.e., in the liquid phase, into contact with the catalyst through which the waste gas is flowing. The reaction product is either utilized in a gaseous form or processed to nitric acid or a nitrate solution. Alternatively, the hydrogen peroxide may be introduced in a gaseous form, using a honeycombed catalyst, and wherein the hydrogen peroxide is present in at least one half of the stoichiometrically determined amount. Regardless of whether the hydrogen peroxide is introduced in a liquid or vapor form, the resulting nitric acid solution may be scrubbed, preferably with a nitrate salt solution, to provide the concentrated product.
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公开(公告)号：MY135540A
公开(公告)日：2008-05-30
申请号：MYPI20031593
申请日：2003-04-28
Applicant: EVONIK DEGUSSA GMBH , UHDE GMBH
Inventor： BERGES JOSE , THIELE GEORG DR , ULLRICH NORBERT , WOELL WOLFGANG , BRASSE CLAUDIA DR , EICKHOFF HUBERTUS , HAAS THOMAS DR , HOFEN WILLI , KAMPEIS PERCY DR , MOROFF GERALD , POHL WERNER , STOCHNIOL GUIDO DR
IPC: C07D301/12 , C07B61/00 , C07D303/04
Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR THE EPOXIDATION OF OLEFINS COMPRISING I) REACTING AN OLEFIN WITH HYDROGEN PEROXIDE IN PRESENCE OF AN EPOXIDATION CATALYST AND AN ALCOHOLIC SOLVENT; II) SEPARATING PRODUCT OLEFIN OXIDE AND UNREACTED OLEFIN FROM THE REACTION PRODUCT OF STEP I); III) RECOVERING A STREAM COMPRISING THE ALCOHOLIC SOLVENT; AND IV) SUBJECTING THE RECOVERED STREAM OF STEP III) TO HYDROGENATION.
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公开(公告)号：PL194706B1
公开(公告)日：2007-06-29
申请号：PL34653199
申请日：1999-08-28
Applicant: DEGUSSA
Inventor： SCHUETTE RUEDIGER , EICKHOFF HUBERTUS
Abstract: The invention relates to a process for carrying out gas-liquid reactions in a continuous flow reactor having several reactor chambers arranged parallel to one another, open in the direction of flow. The space-time yield can be increased in that a reactor is used with at least three chambers, the ratio of chamber width b to slit width s of which is, on average, greater than 3 and the slit width s of which is in the range of 5 to 100 mm. Preferably, s is in the range of 5 to 50 mm and s/b in the range of 5 to 100. The continuous flow reactor according to the invention with the at least three reactor chambers and the above ratio s/b is preferably tubular and contains one or more plate stacks.
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Patent Agency Ranking
公开(公告)号：DE60304169D1
公开(公告)日：2006-05-11
申请号：DE60304169
申请日：2003-04-29
Inventor： BERGES JOSE , BRASSE CLAUDIA , EICKHOFF HUBERTUS , HAAS THOMAS , HOFEN WILLI , KAMPEIS PERCY , MOROFF GERALD , POHL WERNER , STOCHNIOL GUIDO , THIELE GEORG , ULLRICH NORBERT , WOELL WOLFGANG
IPC: C07D301/12 , C07B61/00 , C07D303/04
Abstract: The present invention relates to a process for the epoxidation of olefins by i) reacting an olefin with hydrogen peroxide in presence of an epoxidation catalyst and an alcoholic solvent; ii) separating product olefin oxide and unreacted olefin from the reaction product of step i); iii) recovering a stream comprising the alcoholic solvent, characterized by iv) subjecting the recovered stream of step iii) to hydrogenation.
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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.
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公开(公告)号：PL371503A1
公开(公告)日：2005-06-27
申请号：PL37150303
申请日：2003-04-29
Inventor： BERGES JOSE , BRASSE CLAUDIA , EICKHOFF HUBERTUS , HAAS THOMAS , HOFEN WILLI , KAMPEIS PERCY , MOROFF GERALD , POHL WERNER , STOCHNIOL GUIDO , THIELE GEORG , ULLRICH NORBERT , WOELL WOLFGANG
IPC: C07B61/00 , C07D301/12 , C07D303/04 , C07B41/04
Abstract: The present invention relates to a process for the epoxidation of olefins by i) reacting an olefin with hydrogen peroxide in presence of an epoxidation catalyst and an alcoholic solvent; ii) separating product olefin oxide and unreacted olefin from the reaction product of step i); iii) recovering a stream comprising the alcoholic solvent, characterized by iv) subjecting the recovered stream of step iii) to hydrogenation.
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公开(公告)号：AU2003302171A1
公开(公告)日：2004-06-30
申请号：AU2003302171
申请日：2003-09-23
Applicant: DEGUSSA
Inventor： CREUTZ MATTHIAS , EICKHOFF HUBERTUS , MAURER BERNHARD
IPC: B01J8/22 , B01J23/44 , C01B15/023 , C07B35/02
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.
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公开(公告)号：CA2502715A1
公开(公告)日：2004-06-24
申请号：CA2502715
申请日：2003-09-23
Applicant: DEGUSSA
Inventor： MAURER BERNHARD , EICKHOFF HUBERTUS , CREUTZ MATTHIAS
IPC: B01J8/22 , B01J23/44 , C01B15/023 , C07B35/02
Abstract: In the continuous hydrogenation of a working solution containing a hydrogenable compound with hydrogen in the presence of a heterogeneous catalyst, at least part of the hydrogen-containing waste hydrogenation gas i s recycled into the hydrogenation reactor after compression. According to the invention, a jet pump is used for the compression of the waste hydrogenation gas and a liquid or gaseous feedstock of the hydrogenation process is used a s the motive agent. Preferred motive agents are the hydrogenation gas or a working solution recycled into the process. The process is particularly suitable for performing the hydrogenation step in the anthraquinone process for the production of hydrogen peroxide.
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