EP0000358A2 - Procédé de réglage de la combustion de combustibles liquides ainsi que dispositif de brûleur pour la mise en oeuvre du procédé - Google Patents

Procédé de réglage de la combustion de combustibles liquides ainsi que dispositif de brûleur pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0000358A2
EP0000358A2 EP78100277A EP78100277A EP0000358A2 EP 0000358 A2 EP0000358 A2 EP 0000358A2 EP 78100277 A EP78100277 A EP 78100277A EP 78100277 A EP78100277 A EP 78100277A EP 0000358 A2 EP0000358 A2 EP 0000358A2
Authority
EP
European Patent Office
Prior art keywords
fuel
combustion
nozzle
air
burner arrangement
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.)
Granted
Application number
EP78100277A
Other languages
German (de)
English (en)
Other versions
EP0000358B1 (fr
EP0000358A3 (en
Inventor
Johannes W. Graat
Hans T. Remie
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.)
Smit Ovens Nijmegen BV
Original Assignee
Smit Ovens Nijmegen BV
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 Smit Ovens Nijmegen BV filed Critical Smit Ovens Nijmegen BV
Publication of EP0000358A2 publication Critical patent/EP0000358A2/fr
Publication of EP0000358A3 publication Critical patent/EP0000358A3/xx
Application granted granted Critical
Publication of EP0000358B1 publication Critical patent/EP0000358B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • 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
    • F23D11/005—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space with combinations of different spraying or vaporising means
    • F23D11/007—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space with combinations of different spraying or vaporising means combination of means covered by sub-groups F23D11/10 and F23D11/24
    • 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
    • F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
    • F23D11/26—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space with provision for varying the rate at which the fuel is sprayed
    • 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
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/402—Mixing chambers downstream of the nozzle
    • 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

  • “Stoichiometric combustion” is understood to mean one in which neither soot (measured according to BACHARACH: zero soot number) nor a significant proportion of oxygen in the combustion gases occurs (oxygen content in the order of 0.01 to 0.1%).
  • the regulation can also relate to substoichiometric combustion to produce a reducing atmosphere in which relatively high CO contents (5-6%) occur without soot formation.
  • “Liquid fuels” are understood to mean, in particular, heating oils. These can be heating oils EL, L or S. The corresponding viscosity values of these fuels are according to DIN ')
  • the method according to the invention now makes it possible to wide load ranges to perform stoichiometric combustion. It is astonishing that stoichiometric combustion can be guaranteed, especially in the lower load range and even when a continuous jet of compact fuel is generated.
  • the mixing zone or the channel can be designed such that the cross-section is the same everywhere from the mouth of the fuel nozzle to the transition into the combustion zone.
  • the channel is preferably formed as a cylinder.
  • the change in the air supply cross-section can be achieved in a simple manner by connecting the casing surrounding the duct to an air supply duct on the side facing away from the mixing zone, and by using control devices on the outside of the casing to change the cross section of the openings in the casing.
  • a sliding sleeve can be attached to the inside of the jacket, which covers an opening or openings with a changing passage cross section. This sliding sleeve should preferably be operated from the outside.
  • Light fuel oils are preferred as fuel because of their purity. However, it is easily possible to use heavy fuel oil qualities, especially when using oil preheating.
  • the oil droplets are further broken up in the mixing chamber.
  • the resulting fuel-air mixture then enters a combustion chamber 120, in which the actual combustion takes place.
  • the ignition is provided by a pilot burner with ignition electrode 122.
  • a UV detector 121 is used for monitoring.
  • a solenoid valve 124 is switched via a control line 123, which interrupts the fuel supply.
  • the diagram in FIG. 2 shows the relationships between the most important parameters.
  • the abscissa shows which atomization pressure p corresponds to a specific oil throughput.
  • the required air requirement for combustion air is also plotted. This ratio is based on certain nozzle dimensions.
  • the measured values in the diagram are on a commercially available Spraymaster nozzle, item no. 113, No. 80 (manufacturer Fuelmaster, The Hague, The Netherlands).
  • the droplet size (SMD) is plotted on the ordinate in a curve 1, which is calculated according to the formula from SA U T E R (1). It is readily apparent that the droplet size increases more and more towards lower pressures and correspondingly lower throughputs, until it finally becomes "infinitely" large, which corresponds to a continuous, uninterrupted jet.
  • the diagram according to FIG. 2 can therefore be seen conclude that it is necessary to empirically determine what air velocities are achieved when entering the combustion chamber in order to effectively reduce the droplet size. In any case, it is not possible to achieve a blue flame or effective stoichiometric combustion with droplets that are larger than 50 ⁇ m on average.
  • the droplets can be reduced in size by atomizing air, which is not supplied under so-called critical pressure conditions, but which is supplied, for example, at a pressure of 0.3 ... 0.1 bar or less.
  • the nozzle 6 is in turn connected to a conclusion part 21, which opens with a conically shaped opening 22 in the direction of a burner tube 23.
  • the end part 21 is preferably part of a wall of a boiler or the like.
  • the lance 118 is elongated and centrally equipped with a line 125.
  • the lance protrudes with its rear end out of the housing 1 and is provided there with two connections, namely an oil line connection 41 and a gas connection 42.
  • the lance which is arranged displaceably within the housing 1, has a threaded body 43 on its outside , which is provided with a spiral groove guide 44.
  • the speed of the combustion air is also slower, so that the droplet sizes that emerge from the nozzle are no longer shredded as much as is the case with the position according to FIG. 4a.
  • the combustion air hits droplets in a relatively small volume at high speed, which are relatively large due to the lower pressure p in the line 125. Yes, it is even possible to use the combustion air to smash a continuous jet to such an extent that it is burned stoichiometrically in the subsequent combustion chamber.
  • the airways and the fuel mist are shown by the dashed arrows and the cone indicated by the dashed lines.
  • FIG. 6 shows a further embodiment in which the mixing zone 7 is connected by a sleeve 53 connected to the end part 21 and having a rotatable inner bush.
  • the inner sleeve 50 is provided with holes 51 which, when coincident with corresponding holes 52 of the fixed outer sleeve 53, give maximum air passage when the sleeve 51 is rotated with respect to the outer part, the holes are increasingly closed, so that the air supply is finally reduced to a minimum is.
  • the bushing is rotated via an actuator 60, which makes the bushing 50 rotatable via a gearwheel. This can be done internally half of the mixing chamber 7 achieve a varied possibility of influencing the fuel jet coming from the nozzle 4 by the combustion air.
  • FIG. 8 represents the constructive possibility of providing a displaceable inner bushing 50 ′′ with fixed supports with slots 52 in the region of the wall of the mixing chamber 7, which has several slots 55 ′ with different cross sections is provided.
  • the bushing 50 ′′ is moved with the aid of a linkage 61, the slots 52 can be variably exposed and the air supply can thereby be controlled.
  • a displaceable inner bushing 56 is shown within a fixed outer connecting piece 6 with bores 54, which is provided with triangular slots 57 which, when the inner bushing is displaced with the aid of a linkage 61, more or less uncovered bores 54 leading to the air duct and thereby making the air supply changeable.
  • FIG. 10 shows the possibility of creating an inner bushing with a displaceable lance 118, which is displaceable within the socket and is provided with bores 64 with different cross sections.
  • the slots of the nozzle are gradually removed when the lance is withdrawn Approved. This creates a multi-stage mixing chamber 7, 7 ', 7''.
  • FIG. 12 shows a further exemplary embodiment, in which particular emphasis is placed on the dual (gas-oil) application of the burner.
  • the principle of burner technology can also be applied to so-called dual-fuel burners. It is necessary that the lance is connected to a gas supply.
  • the gas supply is regulated by a rotatable perforated disk 41, which gradually releases the channel 42 1 by rotating the bore 41 '.
  • the perforated disk 41 is coupled to a rotatable outer sleeve 18, which controls the air supply during oil and gas combustion operation and is connected to a servomotor 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Spray-Type Burners (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
EP78100277A 1977-06-29 1978-06-29 Procédé de réglage de la combustion de combustibles liquides ainsi que dispositif de brûleur pour la mise en oeuvre du procédé Expired EP0000358B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2729321A DE2729321C2 (de) 1977-06-29 1977-06-29 Verfahren zur Verbrennung von flüssigem Brennstoff sowie Brennereinrichtung zurDurchführung des Verfahrens
DE2729321 1977-06-29

Publications (3)

Publication Number Publication Date
EP0000358A2 true EP0000358A2 (fr) 1979-01-24
EP0000358A3 EP0000358A3 (en) 1979-03-07
EP0000358B1 EP0000358B1 (fr) 1981-12-09

Family

ID=6012680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100277A Expired EP0000358B1 (fr) 1977-06-29 1978-06-29 Procédé de réglage de la combustion de combustibles liquides ainsi que dispositif de brûleur pour la mise en oeuvre du procédé

Country Status (4)

Country Link
US (1) US4334854A (fr)
EP (1) EP0000358B1 (fr)
JP (1) JPS5413019A (fr)
DE (1) DE2729321C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527312A1 (fr) * 1982-05-24 1983-11-25 Freiberg Brennstoffinst Bruleur radiant pour un fonctionnement mixte avec flamme aplatie s'etendant en direction radiale
EP0507233A3 (en) * 1991-04-02 1993-02-24 Smit Ovens B.V. Burner for liquid fuels
WO2007051698A1 (fr) * 2005-11-04 2007-05-10 Alstom Technology Ltd Lance de bruleur

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828319C2 (de) * 1978-06-28 1984-10-18 Smit Ovens Nijmegen B.V., Nijmegen Brenner für flüssigen Brennstoff mit einer zylindrischen Wirbelkammer
DE3113511C2 (de) * 1981-04-03 1986-07-10 Holec Gas Generators B.V., Nijmegen Brennereinrichtung für einen gasartigen Brennstoff
US4613303A (en) * 1983-06-23 1986-09-23 Combustion Engineering, Inc. Combustion air control in an in-line flame arrestor
DE3526482C1 (de) * 1985-07-24 1986-12-18 Deutsche Babcock Werke AG, 4200 Oberhausen Brenner zum Verbrennen von fluessigem Brennstoff
US4813867A (en) * 1985-10-31 1989-03-21 Nihon Nensho System Kabushiki Kaisha Radiant tube burner
NL8702191A (nl) * 1987-09-15 1989-04-03 Flameco Eclipse Bv Gasbrander.
JPH0184001U (fr) * 1987-11-26 1989-06-05
DE4418964A1 (de) * 1994-05-31 1995-12-07 Johannes Wilhelmus Graat Hohlzylindrischer Brennerkopf und Verfahren zu seiner Herstellung
EP0699867A3 (fr) 1994-09-03 1996-09-11 Johannes Wilhelmus Graat Dispositif de combustion pour combustibles gazeux
US5601789A (en) * 1994-12-15 1997-02-11 W. R. Grace & Co.-Conn. Raw gas burner and process for burning oxygenic constituents in process gas
US5762880A (en) * 1996-12-16 1998-06-09 Megtec Systems, Inc. Operational process and its improved control system of a secondary air burner
FR2757844B1 (fr) * 1996-12-26 1999-01-29 Air Liquide Procede de fabrication de verre technique et bruleur pour la mise en oeuvre d'un tel procede
US6807493B2 (en) * 2001-05-24 2004-10-19 International Business Machines Corporation Estimating flow rates in open-channel geometries having capillary pumping vanes
WO2004059211A1 (fr) * 2002-12-25 2004-07-15 Yanxin Li Bruleur auto-commande et methode de gestion de combustion
DE102004027702A1 (de) * 2004-06-07 2006-01-05 Alstom Technology Ltd Injektor für Flüssigbrennstoff sowie gestufter Vormischbrenner mit diesem Injektor
JP4867220B2 (ja) * 2005-07-15 2012-02-01 トヨタ自動車株式会社 燃料改質装置
SE0501840L (sv) * 2005-08-19 2007-02-20 Aga Ab Förfarande jämte för övervakning av en brännare
US8316875B2 (en) * 2008-12-30 2012-11-27 General Electric Company Methods, apparatus and/or systems relating to fuel delivery systems for industrial machinery

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US657579A (en) * 1899-08-16 1900-09-11 David Grear Fuel injector and burner.
US1175629A (en) * 1915-05-15 1916-03-14 Frederick H N Gerwig Hot-blast-stove appliance.
US1202425A (en) * 1915-09-25 1916-10-24 Melvin W Loyd Valve for mixing fluids.
US1404429A (en) * 1918-03-14 1922-01-24 Tate Jones & Co Inc Hydrocarbon blast burner
US1750602A (en) * 1925-02-18 1930-03-11 Fluid Heat Company Device for vaporizing liquids
DE567291C (de) * 1930-05-14 1932-12-30 Eugene Brillie Zerstaeuberbrenner fuer fluessige Brennstoffe mit axialem Zufuehrungskanal fuer den Brennstoff
US1943750A (en) * 1931-04-25 1934-01-16 George G Tryon Fluid heater economizer
US2242787A (en) * 1937-05-21 1941-05-20 Sulzer Ag Fuel burning device
US2303104A (en) * 1940-03-15 1942-11-24 Harold G Abbey Wide range oil burner
US2566788A (en) * 1949-05-21 1951-09-04 Wright Aeronautical Corp Air assisted fuel nozzle
GB784845A (en) * 1955-10-10 1957-10-16 Reginald Percy Fraser Improvements relating to liquid atomisers
GB832197A (en) * 1956-01-25 1960-04-06 Douglas Arthur Riley Improvements in or relating to oil burners
US2973032A (en) * 1957-02-14 1961-02-28 Dravo Corp Gas or oil burner
DE1266433B (de) * 1962-10-26 1968-04-18 Optimal Oelfeuerungsmaschb G M OElvergasungsbrenner
FR1350802A (fr) * 1962-12-18 1964-01-31 Hersan Et Cie Perfectionnements aux brûleurs à combustibles liquides à pulvérisation mécanique
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FR2128992A5 (fr) * 1971-03-10 1972-10-27 Ugine Kuhlmann
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IT969367B (it) * 1972-10-06 1974-03-30 Riello Bruciatori Sas Testa a ricircolazione esterna per bruciatori di combustibili liquidi
US3788797A (en) * 1972-11-29 1974-01-29 L Mayfield Fuel oil burner lead control mechanism
DE2320442C3 (de) * 1973-04-21 1978-04-27 Smit Nijmegen B.V., Nijmegen (Niederlande) Brenner zur Verbrennung von flüssigem Brennstoff
US3870456A (en) * 1973-05-10 1975-03-11 Smit Nijmegen Bv Burner for the stoichiometric combustion
SE7314956L (fr) * 1973-11-05 1975-05-06 Goetaverken Angteknik Ab
JPS5296420A (en) * 1976-02-10 1977-08-13 Mitsubishi Heavy Ind Ltd Burner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527312A1 (fr) * 1982-05-24 1983-11-25 Freiberg Brennstoffinst Bruleur radiant pour un fonctionnement mixte avec flamme aplatie s'etendant en direction radiale
EP0507233A3 (en) * 1991-04-02 1993-02-24 Smit Ovens B.V. Burner for liquid fuels
WO2007051698A1 (fr) * 2005-11-04 2007-05-10 Alstom Technology Ltd Lance de bruleur

Also Published As

Publication number Publication date
EP0000358B1 (fr) 1981-12-09
JPS6124602B2 (fr) 1986-06-11
US4334854A (en) 1982-06-15
DE2729321C2 (de) 1983-10-20
DE2729321A1 (de) 1979-01-04
JPS5413019A (en) 1979-01-31
EP0000358A3 (en) 1979-03-07

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