EP0289851A2 - Procédé et brûleur pour la combustion de combustible - Google Patents

Procédé et brûleur pour la combustion de combustible Download PDF

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Publication number
EP0289851A2
EP0289851A2 EP88106197A EP88106197A EP0289851A2 EP 0289851 A2 EP0289851 A2 EP 0289851A2 EP 88106197 A EP88106197 A EP 88106197A EP 88106197 A EP88106197 A EP 88106197A EP 0289851 A2 EP0289851 A2 EP 0289851A2
Authority
EP
European Patent Office
Prior art keywords
fuel
ring channel
channel
burner
primary air
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.)
Withdrawn
Application number
EP88106197A
Other languages
German (de)
English (en)
Other versions
EP0289851A3 (fr
Inventor
Hans Bilawa
Eberhard Dipl.-Ing. Neumann
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
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 Krupp Polysius AG filed Critical Krupp Polysius AG
Publication of EP0289851A2 publication Critical patent/EP0289851A2/fr
Publication of EP0289851A3 publication Critical patent/EP0289851A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel

Definitions

  • the invention relates to a method (according to the preamble of claim 1) and a burner (according to the preamble of claim 6) for firing solid, liquid or gaseous fuel, in particular for rotary kilns.
  • the previously known burners for rotary kilns are therefore designed in such a way that the fuel is mixed with the secondary air with the aid of the smallest possible proportion of primary air, which is usually taken from the ambient air.
  • primary air which is usually taken from the ambient air.
  • an in is usually used with the help of swirl or blocking bodies nere backflow generated.
  • the invention is therefore based on the object of designing a method and a burner for firing solid, liquid or gaseous fuel, in particular for rotary kilns, in such a way that fuel particles are not thrown out into the secondary air, rapid and uniform mixing of the fuel primary air Free jet is achieved with the secondary air and thus an earlier start and faster combustion and thus a short flame is achieved.
  • part of the fuel is fed together with primary air through the second ring channel with a delay to a speed of 5 to 20 m / s, preferably 7 to 10 m / s, so that the ignition of this partial fuel flow is before it Leaves from the burner.
  • the root of the main flame is formed by a permanent pilot flame which is generated by this partial fuel flow.
  • the amounts of fuel and air supplied to the permanent pilot flame can be regulated independently of the amounts of fuel and air supplied to generate the main flame.
  • the main flame fuel is now invented appropriately supplied via the first, outer ring channel and thus surrounds the permanent pilot flame.
  • the introduction of this part of the fuel and the associated primary air into the combustion chamber takes place at a very high speed of 70 to 120 m / s, preferably 80 to 100 m / s, which is possible because the flame is lifted by the combustion of the Partial fuel flow in the flame root, ie in the permanent pilot flame, energy released is prevented.
  • the static pressure in the fuel ring jet drops proportionally to the square of the speed increase. If the speed of the fuel-air jet introduced through the first, outer ring channel into the combustion chamber is chosen to be sufficiently high, this static pressure becomes negative and the jet begins to draw in secondary air from the environment.
  • the geometry of the annular gap at the outlet end of the first, outer ring channel is chosen so that the emerging ring free jet has a wall thickness of approximately 5 to 20 mm, which depends on the burner dimensions and the achievable manufacturing tolerances.
  • the large outer surface and the small thickness of the ring jet facilitate and promote the penetration and mixing of the secondary air, which means that the combustion reactions start very early and take place very quickly.
  • the secondary air mixing rate and the expiry of the Combustion reactions can be controlled via the back pressure generated by the permanent pilot flame inside the main flame and by the amount of heat introduced by the pilot flame.
  • the method according to the invention is also very suitable for the joint combustion of different types of fuels, for example coal dust and pyrolysis gas.
  • the main flame and the permanent pilot flame can each be generated by one of the fuel components.
  • the method is also particularly well suited for the supply of recirculated exhaust gases to reduce the formation of NO x .
  • 50 to 95%, preferably 70 to 85% of the total fuel can be supplied through the first, outer ring channel used to generate the main flame, while 5 to 50%, preferably 15 to 30%, of the second ring channel used to generate the permanent pilot flame all fuel are supplied.
  • the primary air supplied via the burner is expediently 5 to 30%, preferably 5 to 12% of the total combustion air.
  • the combustion air (secondary air) is not passed through the burner.
  • the lines connected to the individual channels of the burner for supplying fuel and / or primary air are expediently provided with actuators which serve to influence the fuel and / or air quantities supplied.
  • the burner shown contains a first, outer annular channel 1, which is provided at its outlet end with a cross-sectional constriction in the form of an annular nozzle 1a.
  • a second ring channel 2 Arranged within the first ring channel 1 is a second ring channel 2, which is provided at the outlet end with a diffuser 2a widening at an angle of approximately 7 °, which is followed by a precisely manufactured cylindrical end piece 2b.
  • a third ring channel 3 is arranged within the second ring channel 2 and is provided with a swirl body 3a at the outlet end.
  • the third ring channel 3 encloses a central channel 4.
  • the channels 1, 2, 3 and 4 are arranged coaxially to the burner axis 5.
  • the Erzeu Part of the fuel serving the main flame is supplied together with primary air and accelerated to a high speed of 70 to 120 m / s by means of the ring nozzle 1a.
  • the part of the fuel used to generate the permanent pilot flame is supplied together with primary air through the second ring channel 2 and decelerated to a low speed of 5 to 20 m / s by means of the diffuser 2a.
  • the combustion therefore continues in the diffuser 2a or in the end piece 2b. In this way, the root of the main flame is formed by the permanent pilot flame.
  • Primary air is supplied through the third ring channel 3 and is swirled by the swirl body 3a when it exits this ring channel.
  • Starting fuel is supplied via the central duct 4 when starting and burned by means of the primary air supplied via the third ring duct.
  • the lines connected to channels 1 to 4 for supplying fuel and / or air, and the actuators arranged in these lines for influencing the amount of fuel or air, are not illustrated in the drawing. It goes without saying that, for example, devices for dividing a fuel flow (e.g. division into channels 1 and 2) are also provided can be hen.
  • the fuel is introduced into the combustion chamber via the ring channels 1 and 2 in such a way that a completely or almost swirl-free jet of fuel and primary air is generated.
  • the flame generated by the outer ring channel 1 is stabilized by supplying thermal energy to the flame root, namely by generating a permanent pilot flame which is applied directly to the end of the burner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP88106197A 1987-05-08 1988-04-19 Procédé et brûleur pour la combustion de combustible Withdrawn EP0289851A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3715453 1987-05-08
DE19873715453 DE3715453A1 (de) 1987-05-08 1987-05-08 Verfahren und brenner zur verfeuerung von brennstoff

Publications (2)

Publication Number Publication Date
EP0289851A2 true EP0289851A2 (fr) 1988-11-09
EP0289851A3 EP0289851A3 (fr) 1989-05-24

Family

ID=6327139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106197A Withdrawn EP0289851A3 (fr) 1987-05-08 1988-04-19 Procédé et brûleur pour la combustion de combustible

Country Status (3)

Country Link
US (1) US4846666A (fr)
EP (1) EP0289851A3 (fr)
DE (1) DE3715453A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509581A3 (en) * 1991-04-19 1993-04-07 F.L. Smidth & Co. A/S Burner for a rotary kiln

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100330538B1 (ko) * 1996-12-27 2002-10-19 스미토모 오사카 시멘트 가부시키가이샤 연료연소장치및방법
FR2772888B1 (fr) * 1997-12-24 2000-03-10 Pillard Chauffage Amelioration aux bruleurs a combustible solide
FR2788110B1 (fr) * 1998-12-30 2001-02-16 Air Liquide Procede de combustion et ses utilisations pour l'elaboration de verre et de metal
DE19925875A1 (de) * 1999-06-07 2000-12-14 Krupp Polysius Ag Rohrförmiger Brenner für Industrieöfen
US6551098B2 (en) 2001-02-22 2003-04-22 Rheem Manufacturing Company Variable firing rate fuel burner
DE10301857A1 (de) 2003-01-17 2004-07-29 Schoppe, Fritz, Dr.-Ing. Verfahren zum Befeuern eines Flammrohrkessels mit einem staubförmigen Brennstoff sowie staubgefeuerter Flammrohrkessel
EP2087285A4 (fr) * 2006-11-29 2016-08-17 Smidth As F L Brûleur équipé de moyens de changement de la direction d'écoulement d'un combustible
DE102007021925B4 (de) * 2007-05-10 2014-05-28 Siemens Aktiengesellschaft Kompakt-Kohlenstaubbrenner
DE102009010274B4 (de) * 2009-02-24 2014-06-18 Eisenmann Ag Brenner für eine thermische Nachverbrennungsvorrichtung
US20110250264A1 (en) 2010-04-09 2011-10-13 Pacira Pharmaceuticals, Inc. Method for formulating large diameter synthetic membrane vesicles
EP2500640A1 (fr) * 2011-03-16 2012-09-19 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé de combustion à faible NOx et brûleur correspondant
US8795602B2 (en) 2011-09-29 2014-08-05 General Electric Company Multi-stream feed injector
US9228744B2 (en) 2012-01-10 2016-01-05 General Electric Company System for gasification fuel injection
US9545604B2 (en) 2013-11-15 2017-01-17 General Electric Company Solids combining system for a solid feedstock
CN114294962B (zh) * 2021-12-02 2025-07-15 广东摩德娜科技股份有限公司 一种梭式窑天然气纯氧烧嘴和梭式窑

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1868003U (de) * 1962-02-10 1963-02-28 Steinmueller Gmbh L & C Brenner fuer kohlenstaubfeuerungen.
DE1966701A1 (de) * 1969-11-28 1973-09-06 Steinmueller Gmbh L & C Brenner fuer die wahlweise verbrennung von kohlenstaub, gas und/oder oel
GB1417964A (en) * 1971-11-05 1975-12-17 Hamworthy Engineering Pulverised fuel and oil burners
US4208180A (en) * 1978-02-06 1980-06-17 Ube Industries, Ltd. Mixed-firing burners for use with pulverized coal and heavy oil
DE7904137U1 (de) * 1979-02-15 1982-09-30 Pillard Feuerungen GmbH, 6204 Taunusstein Brenner fuer pulverfoermige oder feinkoernige feste brennstoffe und kombinationen fester, fluessiger und/oder gasfoermiger brennstoffe fuer weitmoeglichste einstellung der flammenform auch waehrend des betriebes
US4241673A (en) * 1979-11-05 1980-12-30 Combustion Engineering, Inc. Direct ignition of pulverized coal
DE3027587A1 (de) * 1980-07-21 1982-02-25 Klöckner-Humboldt-Deutz AG, 5000 Köln Brenner fuer feste brennstoffe
DE3107649A1 (de) * 1981-02-27 1982-11-11 Steag Ag, 4300 Essen Verfahren zum mindestens zweistufigen zuenden einer brennstaubleistungsbrennerflamme und brennsystem zur durchfuehrung des verfahrens
DE3131962C2 (de) * 1981-08-13 1985-07-25 Steag Ag, 4300 Essen Leistungsbrenner für staubförmige Brennstoffe
US4453913A (en) * 1982-05-21 1984-06-12 The Cadre Corporation Recuperative burner
JPS6086312A (ja) * 1983-10-19 1985-05-15 Daido Steel Co Ltd 微粉炭バ−ナ−
JPS60235910A (ja) * 1984-05-09 1985-11-22 Nippon Furnace Kogyo Kaisha Ltd 低負荷燃焼対策のバ−ナ
JPH079282B2 (ja) * 1986-04-04 1995-02-01 石川島播磨重工業株式会社 微粉炭バ−ナ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0509581A3 (en) * 1991-04-19 1993-04-07 F.L. Smidth & Co. A/S Burner for a rotary kiln
TR25944A (tr) * 1991-04-19 1993-11-01 Smidth & Co As F L DÖNER FIRIN ICIN BRüLÖR

Also Published As

Publication number Publication date
US4846666A (en) 1989-07-11
EP0289851A3 (fr) 1989-05-24
DE3715453A1 (de) 1988-11-24

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