公开(公告)号：JP2000266724A

公开(公告)日：2000-09-29

申请号：JP32151599

申请日：1999-10-06

Applicant: BASF AG

Inventor： ODERMATT PETER ,  SPIEGEL ANDREAS ,  DITTRICH JUERGEN

IPC: G01N27/419 ,  B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  G01N27/00 ,  G01N27/16 ,  G01N27/416 ,  G01N27/417 ,  G01N31/12 ,  G01N33/00

Abstract: PROBLEM TO BE SOLVED: To accurately detect momentary concentrations of a plurality of gas constituents in combustion exhaust gas by providing first, second, third bands for measuring momentary concentrations of O2, NH3, and No. SOLUTION: A sensor is constructed of a three-band probe for detecting momentary concentrations of O2, NH3, and NO. A conductive material layer 2 ranging from a substrate 1 made of oxygen conductive material ZrO2 is arranged on one face. The conductive material layer 2 is provided with a recess and chambers 6, 7, 8 formed by covering sheets 3, 4, 5 so as to be used as first, second, and third bands. The first band includes a reactive catalyst for partially selective reaction with NH3 and O2, while the second band includes a reactive catalyst for partially selective reaction with NO, NH3, O2, and in the third band, a partial pressure of O2 is measured. In the respective bands, momentary concentrations of O2, NH3, and NO are measured, and consequently, momentary concentrations of a plurality of gas constituents in gas are detected.

公开(公告)号：DE19846487C5

公开(公告)日：2004-12-30

申请号：DE19846487

申请日：1998-10-09

Applicant: BASF AG

Inventor： ODERMATT PETER ,  SPIEGEL ANDREAS ,  DITTRICH JUERGEN

IPC: B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  G01N27/419 ,  G01N27/00 ,  G01N27/16 ,  G01N27/416 ,  G01N27/417 ,  G01N31/12 ,  G01N33/00 ,  G01N27/407 ,  B01D53/90

Abstract: Measuring probe has a first region for determining the instantaneous concentration of oxygen, a second region for determining the instantaneous concentration of ammonia, and a third region for determining the instantaneous concentration of nitrogen oxide. Independent claims are also included for: (A) a catalyst system for reducing nitrogen oxides in combustion gases comprising the measuring probe arranged at the catalyst exit and/or in the catalyst at the site of ammonia injection; and (B) a process for minimizing the ammonia and nitrogen oxide output from the catalyst system comprising using the measured results of the probe to regulate ammonia injection.

公开(公告)号：DE19846487A1

公开(公告)日：2000-04-27

申请号：DE19846487

申请日：1998-10-09

Applicant: BASF AG

Inventor： ODERMATT PETER ,  SPIEGEL ANDREAS ,  DITTRICH JUERGEN

IPC: B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  G01N27/00 ,  G01N27/419 ,  G01N27/16 ,  G01N27/416 ,  G01N27/417 ,  G01N31/12 ,  G01N33/00 ,  G01N27/407 ,  B01D53/90

Abstract: Measuring probe has a first region for determining the instantaneous concentration of oxygen, a second region for determining the instantaneous concentration of ammonia, and a third region for determining the instantaneous concentration of nitrogen oxide. Independent claims are also included for: (A) a catalyst system for reducing nitrogen oxides in combustion gases comprising the measuring probe arranged at the catalyst exit and/or in the catalyst at the site of ammonia injection; and (B) a process for minimizing the ammonia and nitrogen oxide output from the catalyst system comprising using the measured results of the probe to regulate ammonia injection.

公开(公告)号：DE59911477D1

公开(公告)日：2005-02-24

申请号：DE59911477

申请日：1999-10-06

Applicant: BASF AG

Inventor： ODERMATT PETER ,  SPIEGEL ANDREAS ,  DITTRICH JUERGEN

IPC: B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  G01N27/419 ,  G01N27/00 ,  G01N27/16 ,  G01N27/416 ,  G01N27/417 ,  G01N31/12 ,  G01N33/00

Abstract: Measuring probe has a first region for determining the instantaneous concentration of oxygen, a second region for determining the instantaneous concentration of ammonia, and a third region for determining the instantaneous concentration of nitrogen oxide. Independent claims are also included for: (A) a catalyst system for reducing nitrogen oxides in combustion gases comprising the measuring probe arranged at the catalyst exit and/or in the catalyst at the site of ammonia injection; and (B) a process for minimizing the ammonia and nitrogen oxide output from the catalyst system comprising using the measured results of the probe to regulate ammonia injection.

公开(公告)号：AT287535T

公开(公告)日：2005-02-15

申请号：AT99119164

申请日：1999-10-06

Applicant: BASF AG

Inventor： ODERMATT PETER ,  SPIEGEL ANDREAS ,  DITTRICH JUERGEN

IPC: G01N27/419 ,  B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  G01N27/00 ,  G01N27/16 ,  G01N27/416 ,  G01N27/417 ,  G01N31/12 ,  G01N33/00

Abstract: Measuring probe has a first region for determining the instantaneous concentration of oxygen, a second region for determining the instantaneous concentration of ammonia, and a third region for determining the instantaneous concentration of nitrogen oxide. Independent claims are also included for: (A) a catalyst system for reducing nitrogen oxides in combustion gases comprising the measuring probe arranged at the catalyst exit and/or in the catalyst at the site of ammonia injection; and (B) a process for minimizing the ammonia and nitrogen oxide output from the catalyst system comprising using the measured results of the probe to regulate ammonia injection.

公开(公告)号：DE19846487C2

公开(公告)日：2001-02-01

申请号：DE19846487

申请日：1998-10-09

Applicant: BASF AG

Inventor： ODERMATT PETER ,  SPIEGEL ANDREAS ,  DITTRICH JUERGEN

IPC: B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  G01N27/419 ,  G01N27/00 ,  G01N27/16 ,  G01N27/416 ,  G01N27/417 ,  G01N31/12 ,  G01N33/00 ,  G01N27/407 ,  B01D53/90

Abstract: Measuring probe has a first region for determining the instantaneous concentration of oxygen, a second region for determining the instantaneous concentration of ammonia, and a third region for determining the instantaneous concentration of nitrogen oxide. Independent claims are also included for: (A) a catalyst system for reducing nitrogen oxides in combustion gases comprising the measuring probe arranged at the catalyst exit and/or in the catalyst at the site of ammonia injection; and (B) a process for minimizing the ammonia and nitrogen oxide output from the catalyst system comprising using the measured results of the probe to regulate ammonia injection.