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公开(公告)号：PT97644A
公开(公告)日：1992-03-31
申请号：PT9764491
申请日：1991-05-10
Applicant: DEGUSSA
Inventor： WEDEL WEDIGO VON , HELMLING OSWALD
IPC: B01D53/94 , B01D53/86 , B01J21/04 , B01J21/06 , B01J21/08 , B01J21/16 , B01J21/18 , B01J23/74 , B01J23/755 , B01J29/06 , B01J31/08 , C01B21/38 , C01B21/40 , B01D53/00
Abstract: A method for the removal of nitrogen oxides from waste gases and for obtaining nitric acid is described. The waste gas is charged with the required amount of hydrogen peroxide, converted into the gas phase, and the gas mixture is reacted on a solid catalyst to hydrogen nitrate, which is either withdrawn for further use or is converted into nitric acid either by condensation or by scrubbing with water. The method permits the removal of NOx at low concentrations below 2000 ppm with efficiencies above 90%.
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公开(公告)号：HU911575D0
公开(公告)日：1991-11-28
申请号：HU157591
申请日：1991-05-10
Applicant: DEGUSSA
Inventor： VON WEDEL WEDIGO , SENFF ELKE , HELMLING OSWALD
IPC: B01D53/94 , B01D53/86 , B01J21/04 , B01J21/06 , B01J21/08 , B01J21/16 , B01J21/18 , B01J23/74 , B01J23/755 , B01J29/06 , B01J31/08 , C01B21/38 , C01B21/40
Abstract: A method for the removal of nitrogen oxides from waste gases and for obtaining nitric acid is described. The waste gas is charged with the required amount of hydrogen peroxide, converted into the gas phase, and the gas mixture is reacted on a solid catalyst to hydrogen nitrate, which is either withdrawn for further use or is converted into nitric acid either by condensation or by scrubbing with water. The method permits the removal of NOx at low concentrations below 2000 ppm with efficiencies above 90%.
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公开(公告)号：FI890100A0
公开(公告)日：1989-01-09
申请号：FI890100
申请日：1989-01-09
Applicant: DEGUSSA
Inventor： SUESS HANS ULRICH , MEIER JUERGEN , HELMLING OSWALD
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公开(公告)号：FI871956A0
公开(公告)日：1987-05-04
申请号：FI871956
申请日：1987-05-04
Applicant: DEGUSSA
Inventor： SUESS HANS ULRICH , EUL WILFRIED , HELMLING OSWALD , MAIER JUERGEN
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公开(公告)号：CA2213215C
公开(公告)日：2007-04-17
申请号：CA2213215
申请日：1996-02-01
Applicant: DEGUSSA
Inventor： HELMLING OSWALD , JAKOB HARALD , TRAGESER MARTIN , WERLE PETER
Abstract: The potential hazards of acraldhyde make its direct handling for combatting microbial, vegetable and animal pests in the water and ground difficult. According to the invention, use is made of a composition releasing acraldhyde in contact with water at the point of use. The composition of the invention contains an acraldhyde acetal, preferably 2-vinyl-2, 3-dioxolane, and a compound hydrolysable to an acid with a pK S of lower than 4, especially one from the range of organic acid anhydrides, organic acid halides and inorganic halogen compounds forming hydrogen halides on hydrolysis.
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Patent Agency Ranking
公开(公告)号：DE4036899C2
公开(公告)日：2001-10-25
申请号：DE4036899
申请日：1990-11-20
Applicant: DEGUSSA
Inventor： SOLDAVINI HEINZ , LOSS CARL , HELMLING OSWALD
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公开(公告)号：DK0809435T3
公开(公告)日：1999-11-01
申请号：DK96901342
申请日：1996-02-01
Applicant: DEGUSSA
Inventor： WERLE PETER , TRAGESER MARTIN , HELMLING OSWALD , JAKOB HARALD
Abstract: The potential hazards of acraldhyde make its direct handling for combatting microbial, vegetable and animal pests in the water and ground difficult. According to the invention, use is made of a composition releasing acraldhyde in contact with water at the point of use. The composition of the invention contains an acraldehyde acetal, preferably 2-vinyl-2, 3-dioxolane, and a compound hydrolysable to an acide with a pKs of lower than 4, especially one from the range of organic acid anhydrides, organic acid halides and inorganic halogen compounds forming hydrogen halides on hydrolysis.
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公开(公告)号：AU688661B2
公开(公告)日：1998-03-12
申请号：AU4539896
申请日：1996-02-01
Applicant: DEGUSSA
Inventor： WERLE PETER , TRAGESER MARTIN , HELMLING OSWALD , JAKOB HARALD
Abstract: The potential hazards of acraldhyde make its direct handling for combatting microbial, vegetable and animal pests in the water and ground difficult. According to the invention, use is made of a composition releasing acraldhyde in contact with water at the point of use. The composition of the invention contains an acraldehyde acetal, preferably 2-vinyl-2, 3-dioxolane, and a compound hydrolysable to an acide with a pKs of lower than 4, especially one from the range of organic acid anhydrides, organic acid halides and inorganic halogen compounds forming hydrogen halides on hydrolysis.
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公开(公告)号：MX9706148A
公开(公告)日：1997-11-29
申请号：MX9706148
申请日：1996-02-01
Applicant: DEGUSSA
Inventor： WERLE PETER , TRAGESER MARTIN , HELMLING OSWALD , JAKOB HARALD
Abstract: El manejo directo de acroleína con el fin de plagas microbianas, vegetales y animales en el agua y en el suelo es problemático debido al peligro potencial de la acroleína. De acuerdo con la invencion es utiliza una composicion liberadora de acroleína fácil de manejar al ponerla en contacto con agua en el lugar de aplicacion. La composicion de acuerdo con la invencion contiene un acetalo de acroleína, preferentemente 2-vinil-1,3-dioxclano, y un compuesto hidrolizable a un ácido con un valor pKa menor a 4, en especial del grupo de anhídridos deácidos orgánicos, halogenuros de ácidos orgánicos y compuestos de halogeno inorgánicos que formen por medio de hidrolisis hidratos de halogeno.
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公开(公告)号：FI98536C
公开(公告)日：1997-07-10
申请号：FI904088
申请日：1990-08-17
Applicant: DEGUSSA
Inventor： MEIER JUERGEN , ARNOLD GERHARD , HELMLING OSWALD
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