Global Patent Index - EP 0756134 B1

EP 0756134 B1 2000-06-28 - Method and burner for reducing the formation of NOx when burning pulverized coal

Title (en)

Method and burner for reducing the formation of NOx when burning pulverized coal

Title (de)

Verfahren und Brenner zur Verminderung der Bildung von NOx bei der Verbrennung von Kohlenstaub

Title (fr)

Procédé et brûleur pour la réduction de la production de NOx lors de la combustion de charbon pulvérisé

Publication

EP 0756134 B1 (DE)

Application

EP 96106401 A

Priority

DE 19527083 A

Abstract (en)

[origin: EP0756134A1] The burner involves connecting a primary dust pipe (6) to a dust pipe (7) and conveying a mixed flow of primary air and coal dust. The primary dust pipe is enclosed by a secondary and tertiary air pipes (10,11), both of which continue into a conically widening section. The pipes have a swirling appliance (22,23) and are connected to a spiral inlet housing (16,17). The outlet end of the primary dust pipe has a stabiliser ring (8), the primary dust pipe is enclosed by a primary gas pipe (9) forming a ring channel. A dust-free part-flow of the mixed current flows through the primary gas pipe. A part-flow rich in dust flows through the primary dust pipe. The dust pipe contains a swirl piece (24) downstream from which is an immersion pipe (25) connected to the primary gas pipe by an outward leading pipe (26) via a spiral inlet housing.

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

F23D 1/00

IPC 8 full level (invention and additional information)

F23C 99/00 (2006.01); F23D 1/00 (2006.01); F23D 1/02 (2006.01); F23D 17/00 (2006.01)

CPC (invention and additional information)

F23D 17/005 (2013.01); F23D 1/00 (2013.01); F23D 1/02 (2013.01); F23C 2201/20 (2013.01); F23C 2202/10 (2013.01); F23D 2201/20 (2013.01)

Designated contracting state (EPC)

DE DK ES FI FR GB NL

EPO simple patent family

EP 0756134 A1 19970129; EP 0756134 B1 20000628; AU 5461196 A 19970130; AU 727761 B2 20001221; CA 2175113 A1 19970126; CN 1152686 A 19970625; DE 19527083 A1 19970130; DK 0756134 T3 20001106; ES 2149402 T3 20001101; JP H0942611 A 19970214; PL 181172 B1 20010629; PL 314866 A1 19970203; RU 2147708 C1 20000420; US 5832847 A 19981110; US 5979342 A 19991109; ZA 9603667 B 19961120

INPADOC legal status


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2008-10-01 [NLS] NL: ASSIGNMENTS OF EP-PATENTS

- Owner name: HITACHI POWER EUROPE GMBH

- Effective date: 20080630

2008-09-17 [REG GB 732E] AMENDMENTS TO THE REGISTER IN RESPECT OF CHANGES OF NAME OR CHANGES AFFECTING RIGHTS (SECT. 32/1977)

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2000-12-01 [NLR4] NL: RECEIPT OF CORRECTED TRANSLATION IN THE NETHERLANDS LANGUAGE AT THE INITIATIVE OF THE PROPRIETOR OF THE PATENT

2000-11-06 [REG DK T3] TRANSLATION OF EP PATENT

2000-11-01 [REG ES FG2A] DEFINITIVE PROTECTION

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2000-08-03 [REF] CORRESPONDS TO:

- Document: DE 59605487 20000803

2000-06-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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2000-04-12 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: BBP ENERGY GMBH

1999-11-03 [RTI1] TITLE (CORRECTION)

- Free text: METHOD AND BURNER FOR REDUCING THE FORMATION OF NOX WHEN BURNING PULVERIZED COAL

1999-10-13 [RTI1] TITLE (CORRECTION)

- Free text: METHOD AND BURNER FOR REDUCING THE FORMATION OF NOX WHEN BURNING PULVERIZED COAL

1998-05-13 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: BABCOCK KRAFTWERKSTECHNIK GMBH

1998-04-15 [17Q] FIRST EXAMINATION REPORT

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