Global Patent Index - EP 0933595 A3

EP 0933595 A3 2000-02-09 - Method for reducing nitrons fumes in combustion facilities with simultaneous saving of energy

Title (en)

Method for reducing nitrons fumes in combustion facilities with simultaneous saving of energy

Title (de)

Verfahren zur Verminderung nitroser Gase in Verbrennungsanlagen unter gleichzeitiger Energieeinsparung

Title (fr)

Procédé pour diminuer les gaz nitreux dans des installations de combustion tout en économisant de l'énergie

Publication

EP 0933595 A3 (DE)

Application

EP 98120236 A

Priority

DE 19748189 A

Abstract (en)

[origin: DE19748189A1] The method reduces the amount of nitrous gas such as nitrous oxide when operating a combustion system. Compared with the amount of air required for complete combustion, the burner is operated partly with excess and partly with insufficient air. The difference between the amounts of air can be between 20 % and 40 %, and the overall surplus of air can be between 15 % and 50 % of that required for complete combustion. Natural gas, combustible exhaust gases, heating oil, pulverized coal or combustible waste from chemical production can be used as the heating agent.

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

F23N 1/00; F23C 7/00; F23N 3/00; F23N 5/00; F23N 5/24

IPC 8 full level (invention and additional information)

F23C 6/04 (2006.01); F23G 7/00 (2006.01)

CPC (invention and additional information)

F23G 7/00 (2013.01); F23C 6/045 (2013.01); F23C 2201/101 (2013.01); F23J 2215/10 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19748189 A1 19990520; EP 0933595 A2 19990804; EP 0933595 A3 20000209

INPADOC legal status


2002-04-24 [18W] WITHDRAWN

- Date of withdrawal: 20020223

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000809

2000-10-18 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT CH DE ES FR IT LI

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-02-09 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2000-01-05 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7F 23N 1/00 A, 7F 23N 3/00 B, 7F 23N 5/00 B, 7F 23N 5/24 B, 7F 23C 7/00 B

1999-08-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT CH DE ES FR IT LI

1999-08-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI