Global Patent Index - EP 0751342 B1

EP 0751342 B1 2001-12-19 - Method for operating a system with a staged combustion

Title (en)

Method for operating a system with a staged combustion

Title (de)

Verfahren zum Betrieb einer Anlage mit einem gestuften Verbrennungssystem

Title (fr)

Procédé pour le fonctionnement d'un système à combustion étagée

Publication

EP 0751342 B1 (DE)

Application

EP 96810354 A

Priority

DE 19523093 A

Abstract (en)

[origin: EP0751342A2] The plant has at least two combustion stages. The first combustion stage (1a) is driven with a fuel air mixture (3) of fuel and air, where the air ratio is greater than the total air ratio of the combustion system. The hot combustion gases (5) from the first combustion stage are mixed with a fuel and air mixture (4) possessing an air ratio less than the total air ratio of the combustion system. The fuel air mixture for the first combustion stage, with a duration time inside the first combustion stage of 2.4 m seconds +/-25 per cent, comes to combustion with an air ratio of 2.4+/-25 per cent. The fuel air mixture (4) introduced into the host combustion gases is operated with an air ratio of 1.4 +/-25 per cent.

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

F23C 6/04

IPC 8 full level (invention and additional information)

F23R 3/34 (2006.01); F23C 6/04 (2006.01); F23C 99/00 (2006.01)

CPC (invention and additional information)

F23C 6/042 (2013.01)

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

EP 0751342 A2 19970102; EP 0751342 A3 19980520; EP 0751342 B1 20011219; DE 19523093 A1 19970102; JP H0914604 A 19970117; US 5918457 A 19990706

INPADOC legal status


2006-03-10 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20060131

2006-02-01 [NLV4] NL: LAPSED OR ANULLED DUE TO NON-PAYMENT OF THE ANNUAL FEE

- Effective date: 20051201

2006-01-31 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20060131

2006-01-25 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20050531

2005-12-01 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2005-12-01 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2005-05-31 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2005-05-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-12-11 [26N] NO OPPOSITION FILED

2002-05-31 [ET] FR: TRANSLATION FILED

2002-04-24 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20020402

2002-03-01 [NLT2] NL: MODIFICATIONS (OF NAMES), TAKEN FROM THE EUROPEAN PATENT PATENT BULLETIN

- Owner name: ALSTOM

2002-01-31 [REF] CORRESPONDS TO:

- Document: DE 59608478 20020131

2002-01-02 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: ALSTOM

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-12-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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

2001-03-21 [RTI1] TITLE (CORRECTION)

- Free text: METHOD FOR OPERATING A SYSTEM WITH A STAGED COMBUSTION

2001-02-28 [RTI1] TITLE (CORRECTION)

- Free text: METHOD FOR OPERATING A SYSTEM WITH A STAGED COMBUSTION

2000-05-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000406

1999-01-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981118

1998-05-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

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

1997-01-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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