EP0781961A1 - Vorrichtung zur Zerstäubung eines flüssigen Brennstoffes mit einem Zerstäubungsgas - Google Patents

Vorrichtung zur Zerstäubung eines flüssigen Brennstoffes mit einem Zerstäubungsgas Download PDF

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Publication number
EP0781961A1
EP0781961A1 EP96402858A EP96402858A EP0781961A1 EP 0781961 A1 EP0781961 A1 EP 0781961A1 EP 96402858 A EP96402858 A EP 96402858A EP 96402858 A EP96402858 A EP 96402858A EP 0781961 A1 EP0781961 A1 EP 0781961A1
Authority
EP
European Patent Office
Prior art keywords
passage
skirt
liquid fuel
head
burner according
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
EP96402858A
Other languages
English (en)
French (fr)
Other versions
EP0781961B1 (de
Inventor
Philippe Beaudouin
Stéphane Arnoux
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0781961A1 publication Critical patent/EP0781961A1/de
Application granted granted Critical
Publication of EP0781961B1 publication Critical patent/EP0781961B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • F23D11/101—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet
    • F23D11/104—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour medium and fuel meeting before the burner outlet intersecting at a sharp angle, e.g. Y-jet atomiser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber

Definitions

  • the present invention relates to a device for spraying a liquid fuel, of the type comprising two separate supply passages for liquid fuel and spray gas, coaxial as a whole, and a spray head extending said passages, said head being provided for each fluid from one or more conduits which converge in one or more nozzles formed in the head and opening into a combustion zone in which the nozzles release a mixture of the atomized liquid fuel and the atomizing gas, which head is kept at the end of the coaxial passages by a nut screwed onto the wall of the external passage.
  • a liquid oxy-fuel burner that is to say a burner using a device as described above for spraying the liquid fuel and a substantially pure oxidizer, that is to say comprising at least 85% 02, preferably pure oxygen, such as that produced by a VSA type adsorption unit or preferably that produced by a cryogenic oxygen production unit.
  • the oxidizing gas may include other gases, in particular inert gases such as nitrogen (up to 15% vol.), argon (in general not more than 5% vol.) of mixtures of these two gases or any other suitable gas.
  • Such spraying devices are already known and are generally designated by “Y sprayers” or “Y sprayers”.
  • the liquid fuel for example fuel
  • the spraying gas for example steam or air
  • the spraying device In the case of a burner using fuel and oxygen, the spraying device is mounted in the center of an oxygen stream.
  • the fuel that escapes through the thread of the nut ignites locally raising the temperature to more than 1000 ° C, seriously damaging the device.
  • the object of the invention is to propose a spraying device of the aforementioned type which does not have the drawbacks mentioned above, the reliability of which is increased and the manufacture of which is simple and inexpensive.
  • the subject of the invention is a device for spraying a liquid fuel, of the aforementioned type, characterized in that the liquid fuel supply passage is in the central position and is surrounded by the liquid supply passage. spray gas.
  • the spraying device 10 shown in FIG. 1 comprises a spray head 12 mounted at the end of a connector 14 by means of a nut 16. It is generally of axis XX, the spray head being assumed at the front.
  • the connector 14 is welded to the ends of two coaxial pipes 18, 20.
  • the interior pipe 18 supplies the spraying device with liquid fuel, fuel oil for example, from a pressurized source 18A.
  • the external pipe 20 supplies the device with spraying gas, steam for example, from a pressurized source 20A.
  • the connector 14 is formed by a sleeve of axis XX having an axial cylindrical passage 22. This passage is intended for supplying the head 12 with liquid fuel.
  • the sleeve is also traversed right through by a ring of twelve longitudinal bores 24 arranged at the periphery of the passage 22. These bores 24 are intended to supply the head 12 with spray gas.
  • the thickness of the sleeve is reduced externally in its rear part, so that the passage 22 extends beyond the bores 24.
  • the rear part of the passage 22 is delimited by a connecting section 26 comprising an end skirt 28 intended to be engaged in the pipe 18.
  • the latter is welded by an annular weld bead 30 to the connecting section 26.
  • the sleeve has, at the holes 24, an external excess thickness 32 having a rear chamfer 34 against which the pipe 20 is welded by an annular weld bead 36.
  • a thread 38 is formed at the front on the outer wall of the sleeve for the screwing of the nut 16.
  • the spray head 12 is generally of axis X-X revolution. It comprises at the front a spraying block 40 extended at the rear by a skirt 42 received in the passage 22.
  • the spray block 40 is formed of a solid metal cylinder in which are formed six cylindrical spray nozzles 44 having a diameter of 2.4 mm.
  • the latter open onto the front surface 46 of the spray block in the combustion zone. They form an angle of about 15 ° with the axis XX.
  • the periphery of the front surface 46 on which the nozzles 44 open is frustoconical, so that the nozzles open perpendicular to this surface.
  • the nozzles 44 are extended towards the rear by conduits 48 of reduced diameter, for example 1.6 mm. These conduits 48 open in the vicinity of the axis X-X inside the space delimited by the skirt 42. They are intended to convey the fluid fuel to the nozzles 44.
  • Conduits 50 for supplying the spraying gas open out at their front end laterally inside the nozzles 44 and at their rear end in an annular groove 52 surrounding the skirt 42.
  • the diameter of this groove corresponds substantially to the diameter of the crown of holes 24.
  • the conduits 50 have a diameter identical to that of the conduits 48.
  • the spraying block 40 From its front end, the spraying block 40 has externally a section of reduced diameter 54 thus delimiting a cylindrical side wall 55 of circular section extended by a shoulder 56.
  • the skirt 42 has an outside diameter substantially equal to the inside diameter of the passage 22.
  • An O-ring seal 58 is arranged in a groove 60 formed externally at the distal end of the skirt 42.
  • Successive complementary grooves 62 are formed on the outer wall of the skirt 42 over the entire length of the latter between its distal end and its proximal end where it is connected to the spray block 40.
  • the length of the skirt 42 is greater than twice its outside diameter and is, for example, as shown in the figures, equal to four times this diameter.
  • the nut 16 has at the rear an internal thread 64 intended to cooperate with the thread 38. It has a peripheral re-entrant flange 66 at the front intended to cooperate with the shoulder 56 to hold the head 12 at the end of the connector 14. Two flats 67 (not shown in FIG. 1) are provided on the outer wall of the nut to allow its drive with an open-end wrench.
  • longitudinal holes 68 for example six in number, are formed in the nut 16. They open on the one hand on the front face of the nut and on the other hand in an internal groove 69 provided immediately in before the thread 64 at the interface between the spray head 12 and the outer wall of the longitudinal bores 24.
  • the fitting 14 is welded axially at the end of the internal pipe 18 and then at the end of the external pipe 20.
  • the skirt 42 provided with the seal 58 is then introduced inside the passage 22.
  • a flat seal 70 for example made of copper, is interposed at the interface between the rear of the spray block 40 and the front of the connector 14 outside the annular groove 52. This seal has a diameter greater than the ring of bores 24 and a thickness substantially equal to the width of the groove 69.
  • the nut 16 is then mounted on the spray block 40 and is screwed onto the thread 38. It maintains the head 12 at the end of the connector 14 so that, on the one hand, the conduits 48 communicate with the central passage 22 for supplying fluid fuel, and on the other hand, the conduits 50 communicate via the groove 52 with the peripheral holes 24 for supplying spray gas.
  • the liquid fuel and the spraying gas are conveyed separately to the nozzles 44 where the liquid fuel is sprayed under the effect of the pressure of the spraying gas.
  • the liquid fuel can be supplied with a flow rate of 360 kg / h at a pressure of 3 to 4 relative bars, while the atomizing gas is supplied at a pressure of 5 relative bars.
  • the leaks which may occur at the nut 16 can only be leaks of spray gas without significant danger for the nut, the gas being non-flammable.
  • the holes 68 allow the evacuation of the spraying gas which may have escaped beyond the joint. 70. Threads 38 and 64 are thus protected.
  • the length of the skirt 42 introduced into the passage 22 for supplying fluid fuel limits the risk of fuel leaking towards the annular stream of spray gas. This tightness is also guaranteed by the seal 58 and the grooves 62 which create successive pressure drops along the skirt 42.
  • FIG. 2 shows an alternative embodiment of the spraying device of FIG. 1.
  • the skirt 42 is provided externally at its proximal end with an external thread 100 intended to cooperate with a complementary tapping 102 formed at the front end of the passage 22.
  • the thread 100 extends over approximately one third of the length of the skirt 42.
  • the rim 66 of the nut 16 is extended towards the front by a skirt 104 which covers the entire side wall 55 of the spraying unit 40.
  • This skirt has an external chamfer 106 onto which the end of the holes 68 opens out.
  • the spray heads described here have several spray nozzles. However, it is possible to provide a single axial nozzle towards which several external spray gas supply conduits converge. This nozzle is supplied with liquid fuel through a single axial duct.

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)
  • Nozzles (AREA)
EP96402858A 1995-12-27 1996-12-20 Brenner mit einer Vorrichtung zur Zerstäubung eines flüssigen Brennstoffes mit einem Zerstäubungsgas Expired - Lifetime EP0781961B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9515559A FR2743012B1 (fr) 1995-12-27 1995-12-27 Dispositif de pulverisation d'un combustible liquide par un gaz de pulverisation
FR9515559 1995-12-27

Publications (2)

Publication Number Publication Date
EP0781961A1 true EP0781961A1 (de) 1997-07-02
EP0781961B1 EP0781961B1 (de) 2001-10-04

Family

ID=9486010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96402858A Expired - Lifetime EP0781961B1 (de) 1995-12-27 1996-12-20 Brenner mit einer Vorrichtung zur Zerstäubung eines flüssigen Brennstoffes mit einem Zerstäubungsgas

Country Status (5)

Country Link
US (1) US5829683A (de)
EP (1) EP0781961B1 (de)
DE (1) DE69615648T2 (de)
ES (1) ES2163604T3 (de)
FR (1) FR2743012B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1944066A2 (de) 1999-12-22 2008-07-16 Marioff Corporation Oy Sprühkopf mit durch Bohrungen erzeugten Düsen
CN104368457A (zh) * 2014-11-07 2015-02-25 中国人民解放军第二炮兵工程大学 一种管式密集型多孔雾化喷头组件
WO2016055115A1 (de) * 2014-10-09 2016-04-14 Spraying Systems Deutschland Gmbh Zerstäuberdüse

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW415970B (en) * 1997-01-08 2000-12-21 Ebara Corp Vapor-phase film growth apparatus and gas ejection head
US6098897A (en) * 1998-12-23 2000-08-08 Lockwood; Hanford N. Low pressure dual fluid atomizer
US6478239B2 (en) 2000-01-25 2002-11-12 John Zink Company, Llc High efficiency fuel oil atomizer
US7575182B2 (en) * 2006-05-18 2009-08-18 R.P. Scherer Technologies, Inc. Nozzle structure
US8549842B2 (en) * 2009-12-01 2013-10-08 GM Global Technology Operations LLC Air assisted injector, and injection system and exhaust treatment system incorporating the same
CN104500180B (zh) * 2014-12-03 2017-01-18 中国第一汽车股份有限公司无锡油泵油嘴研究所 一种气助可选式喷射器
CA3019185A1 (en) * 2016-04-05 2017-10-12 Metal 7 Inc. Burner for gas heated furnace and method of operation thereof
DE102016208653A1 (de) * 2016-05-19 2017-11-23 Lechler Gmbh Düse zum Versprühen von Flüssigkeiten
CN108534419B (zh) * 2018-06-12 2023-12-26 中联信达（天津）科技发展有限公司 一种造雪用核子气喷雾装置
FR3087363B1 (fr) * 2018-10-18 2020-10-16 Air Liquide Buse d'atomisation assistee, atomiseur et bruleur le contenant et leur utilisation

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044697A1 (de) * 1980-07-18 1982-01-27 John Zink Company Heizölzerstäuber
SU985576A1 (ru) * 1981-07-20 1982-12-30 Уральский филиал Всесоюзного научно-исследовательского и проектного института галургии Форсунка
EP0175658A2 (de) * 1984-09-20 1986-03-26 I.P.E. S.r.l. Brenner für flüssige Brennstoffe
FR2641365A1 (fr) * 1988-12-30 1990-07-06 Pillard Chauffage Procedes et dispositifs pour pulveriser finement un combustible liquide et bruleurs equipes de ces dispositifs
EP0388033A2 (de) * 1989-03-14 1990-09-19 The British Petroleum Company P.L.C. Sprühdüsen zur Brandbekämpfung
DE4238736A1 (de) * 1992-11-17 1994-05-19 Babcock Feuerungssysteme Zerstäuber für einen Ölbrenner
US5431559A (en) * 1993-07-15 1995-07-11 Maxon Corporation Oxygen-fuel burner with staged oxygen supply
EP0676244A1 (de) * 1994-03-11 1995-10-11 Total Raffinage Distribution S.A. Verfahren und Vorrichtung zum Versprühen einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit mittels mindestens eines Hilfgases

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1647956A (en) * 1926-01-16 1927-11-01 Butcher Alfred Oil burner
DE457402C (de) * 1926-10-23 1928-03-15 Augsburg Nuernberg Akt Ges Mas Fluessigkeitsgesteuertes vereinigtes Brennstoffeinblaseluftventil fuer Dieselmaschinen
US3072344A (en) * 1960-12-19 1963-01-08 Babcock & Wilcox Ltd Unitary y-jet spray head assembly
NL6702531A (de) * 1966-02-22 1967-08-23
US3829015A (en) * 1972-06-22 1974-08-13 Combustion Equipment Ass Inc Acoustic nozzle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044697A1 (de) * 1980-07-18 1982-01-27 John Zink Company Heizölzerstäuber
SU985576A1 (ru) * 1981-07-20 1982-12-30 Уральский филиал Всесоюзного научно-исследовательского и проектного института галургии Форсунка
EP0175658A2 (de) * 1984-09-20 1986-03-26 I.P.E. S.r.l. Brenner für flüssige Brennstoffe
FR2641365A1 (fr) * 1988-12-30 1990-07-06 Pillard Chauffage Procedes et dispositifs pour pulveriser finement un combustible liquide et bruleurs equipes de ces dispositifs
EP0388033A2 (de) * 1989-03-14 1990-09-19 The British Petroleum Company P.L.C. Sprühdüsen zur Brandbekämpfung
DE4238736A1 (de) * 1992-11-17 1994-05-19 Babcock Feuerungssysteme Zerstäuber für einen Ölbrenner
US5431559A (en) * 1993-07-15 1995-07-11 Maxon Corporation Oxygen-fuel burner with staged oxygen supply
EP0676244A1 (de) * 1994-03-11 1995-10-11 Total Raffinage Distribution S.A. Verfahren und Vorrichtung zum Versprühen einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit mittels mindestens eines Hilfgases

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 8345, Derwent World Patents Index; Class Q73, AN 83-812721, XP002012956 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1944066A2 (de) 1999-12-22 2008-07-16 Marioff Corporation Oy Sprühkopf mit durch Bohrungen erzeugten Düsen
EP1944066A3 (de) * 1999-12-22 2009-04-15 Marioff Corporation Oy Sprühkopf mit durch Bohrungen erzeugten Düsen
EP1239926B2 (de) † 1999-12-22 2014-04-30 Marioff Corporation Oy Durch bohren hergestellter sprühkopf versehen mit düsen
WO2016055115A1 (de) * 2014-10-09 2016-04-14 Spraying Systems Deutschland Gmbh Zerstäuberdüse
CN104368457A (zh) * 2014-11-07 2015-02-25 中国人民解放军第二炮兵工程大学 一种管式密集型多孔雾化喷头组件

Also Published As

Publication number Publication date
FR2743012A1 (fr) 1997-07-04
DE69615648T2 (de) 2002-06-20
FR2743012B1 (fr) 1998-01-30
EP0781961B1 (de) 2001-10-04
DE69615648D1 (de) 2001-11-08
ES2163604T3 (es) 2002-02-01
US5829683A (en) 1998-11-03

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