Global patent index - EP 0969915 A1

EP 0969915 A1 2000-01-12 - METHOD FOR REDUCING NITROGEN OXIDES IN EXHAUST GASES CONTAINING OXYGEN, ESPECIALLY EXHAUST GASES FROM INTERNAL COMBUSTION ENGINES

Title (en)

METHOD FOR REDUCING NITROGEN OXIDES IN EXHAUST GASES CONTAINING OXYGEN, ESPECIALLY EXHAUST GASES FROM INTERNAL COMBUSTION ENGINES

Title (de)

VERFAHREN ZUR REDUKTION VON STICKOXIDEN IN SAUERSTOFFHALTIGEN ABGASEN, INSBESONDERE ABGASEN VON VERBRENNUNGSMOTOREN

Title (fr)

PROCEDE DE REDUCTION D'OXYDE D'AZOTE CONTENUS DANS DES GAZ D'EVACUATION CONTENANT DE L'OXYGENE, EN PARTICULIER DANS DES GAZ D'ECHAPPEMENT DE MOTEURS A COMBUSTION INTERNE

Publication

EP 0969915 A1 (DE)

Application

EP 98965777 A

Priority

  • DE 19755376 A
  • DE 19821494 A
  • DE 19845944 A
  • EP 9807937 W

Abstract (en)

[origin: WO9930811A1] The invention relates to a method for reducing nitrogen oxides in an exhaust gas flow, especially exhaust gases from internal combustion engines that are subjected to aftertreatment in a catalytic converter. The inventive method is characterised in that a solid reducing agent is transformed into a gas under the effect of heat and the gas is thermally and/or catalytically broken down in a reaction chamber into reductive products which are then mixed with the exhaust gases which are to undergo reduction.

IPC 1-7 (main, further and additional classification)

B01D 53/94; B01D 53/56; B01D 53/86; F01N 3/20

IPC 8 full level (invention and additional information)

B01D 53/56 (2006.01); B01D 53/94 (2006.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 3/24 (2006.01)

CPC (invention and additional information)

F01N 3/2066 (2013.01); B01D 53/565 (2013.01); B01D 53/9409 (2013.01); F01N 2240/20 (2013.01); F01N 2240/40 (2013.01); F01N 2610/02 (2013.01); F01N 2610/06 (2013.01); F01N 2610/08 (2013.01); F01N 2610/10 (2013.01); Y02T 10/24 (2013.01)

Citation (search report)

See references of WO 9930811A1

Designated contracting state (EPC)

DE ES FR GB IT NL

EPO simple patent family

WO 9930811 A1 19990624; WO 9930811 A8 19990812; EP 0969915 A1 20000112; JP 2001523165 A 20011120

INPADOC legal status

2002-07-17 [18R] REFUSED

- Effective date: 20020224

2000-04-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000228

2000-01-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990717

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT NL