EP0496094B1 - Düse zum Zuführen von Sekundärluft - Google Patents

Düse zum Zuführen von Sekundärluft Download PDF

Info

Publication number
EP0496094B1
EP0496094B1 EP91122012A EP91122012A EP0496094B1 EP 0496094 B1 EP0496094 B1 EP 0496094B1 EP 91122012 A EP91122012 A EP 91122012A EP 91122012 A EP91122012 A EP 91122012A EP 0496094 B1 EP0496094 B1 EP 0496094B1
Authority
EP
European Patent Office
Prior art keywords
flange
outer casing
nozzle
air
casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91122012A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0496094A2 (de
EP0496094A3 (en
Inventor
Walter Josef Dipl.-Ing. Martin
Johannes Josef Edmund Dipl.-Ing. Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Publication of EP0496094A2 publication Critical patent/EP0496094A2/de
Publication of EP0496094A3 publication Critical patent/EP0496094A3/de
Application granted granted Critical
Publication of EP0496094B1 publication Critical patent/EP0496094B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire

Definitions

  • the invention relates to a nozzle for supplying secondary air into a firing system with a mechanical firing grate through which primary air can be introduced and a firing chamber formed thereover and delimited by boundary walls, in which secondary air is arranged by means of nozzles which are arranged at least in the front and rear boundary walls can be blown in, the nozzle having an inner jacket and an outer jacket held concentrically therewith and the inner jacket being connected to a flange which has a diameter exceeding the outer jacket and for deflecting the air flowing between the inner and outer jacket perpendicular to that exiting from the inner jacket Air serves.
  • a ring with star-shaped webs is provided in the outer jacket for holding the inner jacket, the front edges of which, seen in the flow direction, are flush with the front edge of the inner jacket.
  • This not only requires additional design effort, but the radially arranged webs also impair the air flow into the outer annular duct and thus make it difficult to calculate the air quantities flowing in both air ducts exactly.
  • the annular channel on the outer circumference of the inner jacket has a substantially constant thickness over its entire length and is deflected in a gentle arc by the flange connected to the inner jacket in a direction perpendicular to the outflow direction of the air flowing in the inner jacket.
  • the object of the invention is to provide a nozzle for supplying secondary air to a firing system, with the aid of which caking on the combustion chamber wall in the region of the nozzle is effectively prevented, with an exact, predictable division of the air streams into a central core jet and an outer ring jet being ensured should.
  • the outer jacket is conically tapered over the entire length in the direction of flow of the air, that the inner jacket penetrates the flange designed as a baffle plate and the opposite end of the inner jacket located inside the outer jacket as Cutting edge is formed with an outwardly widening inner diameter at a constant outer diameter, and that the outer jacket is attached to the end face of the flange and at least a peripheral region is formed as an end slot nozzle between the outer jacket and the flange.
  • the conical tapering of the outer jacket greatly accelerates the flow between the two jackets in the direction of the outlet end, and by fastening the outer jacket to the flange at the front while leaving the outlet slots, the flange acts as a baffle plate, resulting in strong turbulence in the emerging outer jet leads to an effective prevention of caking on the combustion chamber wall even with smaller amounts of air.
  • the inner end of the inner jacket is designed as a cutting edge with an inner diameter that widens outwards, an exact turbulence-free division into a central core jet and an outer ring jet is achieved, which is of great importance for the calculation of the emerging air quantities.
  • This turbulence-free inner core jet is not impaired by the flange either, because the inner jacket penetrates this flange, that is, it projects beyond it, so that the flange cannot impair the core jet.
  • the inner jacket is shorter than the outer jacket and has a length that is between three times and six times its diameter.
  • a section of a firing system is shown in schematic form, which has a fire grate 1 and a feed table 2 with feed pistons 3, which push the fuel fed through a feed chute 4 onto the firing grate.
  • the upwardly extending combustion chamber 5 is formed in its first part, which is bounded by a front boundary wall 6, a rear boundary wall 7 and side walls 8.
  • the combustion material lying on the grate 1 is supplied with primary combustion air from below through the grate.
  • secondary air nozzles 10 and 11 are preferably provided in the area of the front boundary wall 6 and in the area of the rear boundary wall 7, which blow additional combustion air into the combustion chamber around the unburned parts which go up into rise the firebox to subject it to further combustion.
  • the secondary air Nozzles 11 of the rear boundary wall are designed so that this deposition is prevented by a special air duct.
  • the secondary air nozzle is constructed from an outer jacket 12 and an inner jacket 13 which passes through a flange 14 and with this, for. B. is firmly connected by welding.
  • the outer jacket 12 is connected on the end face to the flange 14 by interposing two arc-shaped spacers 16 and 17, which are firmly connected on the one hand to the flange 14 and on the other hand to the front side of the outer jacket 12, as a result of which slot-shaped nozzles 15 are located between the two spacers between the front side of the outer casing 12 and the flange 14 remain, from which air can escape, which is supplied by means of a feed line (not shown) which can be connected to the end 19 of the outer casing 12.
  • This air is divided into two parts by the inner jacket 13, which has a cutting edge 20 located at the inside of the outer jacket 12, one part of the secondary air flowing inside the inner jacket 13 and from the free end 21 into the combustion chamber perpendicular to the Boundary wall 7 emerges while the other part of the air between the Outer surface of the inner shell 13 and the inner surface of the outer shell 12 flows to the slit-shaped nozzles 15 between the end face of the outer shell 12 and the flange 14 and there flows out essentially parallel to the rear boundary wall 7 from the secondary air nozzle, designated as 11, and acts as a veil parallel to it Boundary wall spreads. Baking of combustible particles on the boundary wall 7 of the combustion chamber is avoided by this air emerging essentially parallel to the boundary wall 7 between the end face of the outer shell 12 and the flange 14, which projects significantly beyond the outer diameter of the outer shell at this point.
  • the secondary air nozzle according to FIGS. 4 and 5 essentially corresponds to that according to FIGS. 2 and 3, so that matching parts are provided with the same reference numbers. The only difference is that four spacers 16, 16a, 17 and 17a are provided between the flange 14 and the outer jacket 12, so that four opposing nozzles 15 are formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Air Supply (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Solid-Fuel Combustion (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Catching Or Destruction (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Nozzles (AREA)
EP91122012A 1991-01-24 1991-12-20 Düse zum Zuführen von Sekundärluft Expired - Lifetime EP0496094B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4102072A DE4102072A1 (de) 1991-01-24 1991-01-24 Verfahren und duese zum zufuehren von sekundaerluft
DE4102072 1991-01-24

Publications (3)

Publication Number Publication Date
EP0496094A2 EP0496094A2 (de) 1992-07-29
EP0496094A3 EP0496094A3 (en) 1992-12-23
EP0496094B1 true EP0496094B1 (de) 1996-02-21

Family

ID=6423629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91122012A Expired - Lifetime EP0496094B1 (de) 1991-01-24 1991-12-20 Düse zum Zuführen von Sekundärluft

Country Status (10)

Country Link
US (1) US5174226A (da)
EP (1) EP0496094B1 (da)
JP (1) JPH0648086B2 (da)
AT (1) ATE134433T1 (da)
BR (1) BR9200194A (da)
CA (1) CA2058865C (da)
DE (2) DE4102072A1 (da)
DK (1) DK0496094T3 (da)
ES (1) ES2082916T3 (da)
TW (1) TW200558B (da)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232488C1 (de) * 1992-09-28 1993-12-23 Martin Umwelt & Energietech Zweitluftdüse für Feuerungen
US5564632A (en) * 1994-12-27 1996-10-15 Combustion Engineering, Inc. Secondary air nozzle and starting burner furnace apparatus
DE19843991C2 (de) * 1998-09-25 2002-08-14 Juenger & Graeter Gmbh Feuerfe Zünddeckennase
US20100263654A1 (en) * 2006-10-06 2010-10-21 Cusack William E Outdoor Cooker
US8864491B1 (en) * 2007-12-12 2014-10-21 Precision Combustion, Inc. Direct injection method and apparatus for low NOx combustion of high hydrogen fuels
DE102013017427A1 (de) 2013-10-19 2015-04-23 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Druckrückgewinnungseinrichtung und Kraftfahrzeug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956527A (en) * 1955-07-07 1960-10-18 Babcock & Wilcox Co Combustion apparatus for ash containing fuel
US3955512A (en) * 1973-11-30 1976-05-11 Josef Martin Feuerungsbau Gmbh Refuse incinerator
DE3038875C2 (de) * 1980-10-15 1990-05-31 Vereinigte Kesselwerke AG, 4000 Düsseldorf Müllverbrennungsanlage
JPS5837415A (ja) * 1981-08-28 1983-03-04 株式会社　タクマ 低ＮＯｘ用ごみ焼却炉
CH665468A5 (de) * 1983-05-20 1988-05-13 Theodor Koch Verfahren zur sekundaerluftzufuehrung, sekundaerlufteinlass zur ausfuehrung des verfahrens sowie anwendung des verfahrens.
US4917026A (en) * 1989-03-28 1990-04-17 Macmillan Bloedal Limited Debris burner
FR2645625B1 (fr) * 1989-04-07 1994-05-27 Otv D Procede pour le traitement de dechets menagers et chaudiere pour la mise en oeuvre de ce procede

Also Published As

Publication number Publication date
TW200558B (da) 1993-02-21
DE59107430D1 (de) 1996-03-28
CA2058865C (en) 1995-09-26
DE4102072C2 (da) 1993-02-04
US5174226A (en) 1992-12-29
ES2082916T3 (es) 1996-04-01
BR9200194A (pt) 1992-10-06
DE4102072A1 (de) 1992-07-30
EP0496094A2 (de) 1992-07-29
ATE134433T1 (de) 1996-03-15
EP0496094A3 (en) 1992-12-23
JPH0648086B2 (ja) 1994-06-22
JPH055517A (ja) 1993-01-14
DK0496094T3 (da) 1996-07-08

Similar Documents

Publication Publication Date Title
EP0438682B1 (de) Abgassystem mit einem Partikelfilter und einem Regenerierungsbrenner
DE69917655T2 (de) System zur dämpfung akustischer schwingungen in einer brennkammer
DE2656151C2 (de) Vorrichtung zum Abtrennen von Festkörperverunreinigungen aus einem Gasstrom
DE2654696A1 (de) Brennstoffinjektor fuer ein gasturbinentriebwerk
DE3220796A1 (de) Zerstaeubervorrichtung zum beschichten mit pulver
EP0160661B1 (de) Vorrichtung zum pneumatischen und hydraulischen fördern von schüttgut
EP0496094B1 (de) Düse zum Zuführen von Sekundärluft
DE3006558C2 (da)
EP0492384B1 (de) Düse für eine Vorrichtung und ein Verfahren zum Hochgeschwindigkeitsflammspritzen
DE2558281A1 (de) Brenner zur verbrennung von fluessigem brennstoff in gasfoermigem zustand
DE2757522C2 (de) Rund- oder Ringstrahldüse zum Erzeugen und Abstrahlen eines Nebels oder Aerosols zur Beschichtung von Gegenständen
EP0513414B1 (de) Düsenvorrichtung zur Steuerung eines Gasstromes
CH682009A5 (da)
DE2618219A1 (de) Brennstoffeinspritzvorrichtung fuer ein gasturbinentriebwerk
DE2926248C3 (de) Rückprallvorrichtung zur Verwendung an einer Ausströmdüse für die Zerteilung eines Fluids
DE19542373B4 (de) Brennerkopf für Gasbrenner
EP0064636B1 (de) Vorrichtung zum Erzeugen von Heissgas für das Schrumpfen von Kunststoffolien
DE1277639B (de) Zusatzverbrennungsvorrichtung fuer die Aufheizung der Gase eines Turbinenstrahltriebwerkes
EP0907051A1 (de) Venturidüse zum Mischen von Gas- und Verbrennungsluft für einen Gasbrenner
DE102009034342A1 (de) Vorrichtung und Verfahren zur Absaugung
DE4118261C2 (da)
DE3422197C2 (de) Pulverflammspritzbrenner
DE1294393B (de) Auspufftopf fuer Kraftfahrzeuge
DE102004001222B4 (de) Düseneinheit und Gargerät mit einer Düseneinheit
DE2916087A1 (de) Loeschvorrichtung fuer einen kanal, in dem brennbares schuettgut gefoerdert wird

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19920831

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19940603

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 134433

Country of ref document: AT

Date of ref document: 19960315

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960221

REF Corresponds to:

Ref document number: 59107430

Country of ref document: DE

Date of ref document: 19960328

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: MICHELI & CIE INGENIEURS-CONSEILS

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2082916

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20041209

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20041210

Year of fee payment: 14

Ref country code: LU

Payment date: 20041210

Year of fee payment: 14

Ref country code: DK

Payment date: 20041210

Year of fee payment: 14

Ref country code: CH

Payment date: 20041210

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041213

Year of fee payment: 14

Ref country code: FR

Payment date: 20041213

Year of fee payment: 14

Ref country code: AT

Payment date: 20041213

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20041215

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20041222

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20050118

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051220

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051220

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051221

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060701

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060701

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060831

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20060701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060831

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20051221

BERE Be: lapsed

Owner name: *MARTIN G.M.B.H. FUR UMWELT- UND ENERGIETECHNIK

Effective date: 20051231