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EP0676244B1 - Vorrichtung zum Versprühen einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit mittels mindestens eines Hilfgases - Google Patents

Vorrichtung zum Versprühen einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit mittels mindestens eines Hilfgases Download PDF

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Publication number
EP0676244B1
EP0676244B1 EP95400386A EP95400386A EP0676244B1 EP 0676244 B1 EP0676244 B1 EP 0676244B1 EP 95400386 A EP95400386 A EP 95400386A EP 95400386 A EP95400386 A EP 95400386A EP 0676244 B1 EP0676244 B1 EP 0676244B1
Authority
EP
European Patent Office
Prior art keywords
conduits
liquid
ducts
primary
atomising
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
EP95400386A
Other languages
English (en)
French (fr)
Other versions
EP0676244A1 (de
Inventor
Yannick Pennamen
Didier Quevillon
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.)
TotalEnergies Marketing Services SA
Original Assignee
Total Raffinage Distribution SA
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 Total Raffinage Distribution SA filed Critical Total Raffinage Distribution SA
Publication of EP0676244A1 publication Critical patent/EP0676244A1/de
Application granted granted Critical
Publication of EP0676244B1 publication Critical patent/EP0676244B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B05B7/0475—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 with means for deflecting the peripheral gas flow towards the central liquid flow
    • 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
    • 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
    • B05B7/0491—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 the liquid and the gas being mixed at least twice along the flow path of the liquid
    • 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
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • 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

Definitions

  • the present invention relates to a device for spraying of a liquid, in particular a liquid with high viscosity, using at least one auxiliary gas.
  • the device according to the invention has been particularly studied for spraying fuels with a view to their combustion, but obviously it can be used for spraying liquids for other applications.
  • this process is characterized in that the ratio of the total mass of gas relative to the total liquid mass is less than 0.5.
  • Primary and secondary gas flow velocities are sonic at the height of the edge.
  • This patent application also describes a spraying device implementing this method and the use of this device and this method for the spraying of liquid fuels, in particular of heavy and viscous fuels for combustion.
  • the gases used can be air, water vapor, refinery gas, in the case of the combustion of a fuel, or water vapor, in the case of spraying prior to said fuel.
  • a means simple and easy to implement to obtain a homogeneous distribution of liquid droplets without alter the quality of the dispersion produced by these annular liquid layer devices, consists of placing at least one obstacle across part of the water table liquid, this obstacle having the effect of tearing locally this tablecloth and create a discontinuity there, which changes the trajectory of the droplets.
  • annular spaces in which circulate both liquid and gases auxiliaries have a minimum transverse dimension at less than one millimeter.
  • the Applicant has established that it is possible to use injectors either with the formation of a prefilm, but systems using conduits, both for the circulation of the liquid to be sprayed that for the passage of the auxiliary gas (es), the use of conduits facilitating the construction of the injector.
  • US-A-4 846 402 a device spraying a liquid containing particles suspended solids.
  • This device includes a plurality liquid inlet conduits, the walls of which are pierced with series of holes and which pass through a chamber annular, into which gas is admitted under pressure, which gradually penetrates into the liquid lines through the different holes, the mixture of gas and liquid being ultimately atomized through an orifice to the end of the conduits.
  • the object of the invention is to propose a device for spraying of a liquid, in particular a liquid with high viscosity, using at least one auxiliary gas, in which the risks of blockage of the conduits are reduced.
  • the invention relates to a device for spraying of a liquid, in particular a liquid with high viscosity, using at least one auxiliary gas under pressure, this device comprising a plurality of first conduits supplied with liquid to be sprayed, these first conduits each comprising a spray orifice, and at least two second conduits connected to a gas source pressurized auxiliary, these two second conduits opening laterally into the first conduit, this device being characterized in that the second conduits are arranged obliquely to the axis of the first leads and opens into it at locations arranged substantially in the same plane perpendicular to the axis of the first duct, in the immediate vicinity of the orifice spray.
  • the auxiliary gas may advantageously be of nitrogen, water vapor, air or combustible gas.
  • the second conduits will converge towards the same point on the axis of each first conduit and will be arranged obliquely to this first drove.
  • the axes of the two second conduits will with the axis of the first conduit substantially equal angles, for example, at 45 °,
  • the first and second conduits will have a transverse dimension preferably at least equal to 1 mm.
  • the device according to the invention will advantageously include a head comprising a plurality of first conduits, the spray holes are evenly distributed over the head of the device in a circular crown or along two coaxial circular rings.
  • the various first conduits of the device will be supplied with liquid to be sprayed from a single first supply line, while that the various second conduits will be supplied with gas under pressure from a single second pipe supply, for example with annular section and concentric with the first pipe.
  • a single second pipe supply for example with annular section and concentric with the first pipe.
  • the device shown comprises a head spray 1, made integral with a pipe cylindrical 2 by a collar 3, screwed on the pipe 2.
  • a liquid supply line 4 coaxial to it, is arranged to high viscosity to spray, while auxiliary gas under pressure used for spraying circulates in space 5 separating pipes 2 and 4.
  • head 1 has been shown made in one piece. It's obvious that, for machining reasons, it must be in Several pieces. This machining is naturally within reach of those skilled in the art.
  • conduits 10 communicate at their other end, by through a 10 'toroidal chamber, with conduits 11, inclined with respect to the axis of the head and opening out the outside of this one following orifices 12 of spraying the liquid supplying these conduits 11.
  • conduits 11 in the immediate vicinity of the orifices 12, laterally open two conduits 13 and 14, supplied with auxiliary gas from conduits 9.
  • the conduits 13 communicate with conduits 9, by through a toroidal chamber 9 'while the conduits 14 are connected to an axial conduit 15, communicating via conduits 16, inclined with respect to the axis, with the conduits 9.
  • the liquid therefore borrows successively the tube 4, the conduits 10 and conduits 11, while the auxiliary gas flows successively in the annular space 5, the conduits 7 and 9, then by conduits 13 or by conduits 16, 15 and 14.
  • the conduits 13 and 14 will be arranged obliquely to the conduit 11, making angles therewith ⁇ 1 and ⁇ 2 which may be equal and of the order of 45 °.
  • the conduits 13 and 14 will converge towards the same point on the axis of the conduit 11.
  • an offset of the locations for connecting the conduits 13 and 14 to the conduit 11, as shown in FIG. 3 does not enter not within the scope of the invention.
  • FIGS 4 and 5 illustrate another form of embodiment of the device according to the invention.
  • the organs already described are designated by the same reference numbers as in Figures 1 to 3.
  • the spray orifices conduits 11 are not distributed regularly according to a single circular crown on the head of the device, but along two coaxial rings, the orifices 12, at number of four in the case of the device shown, being angularly offset by 45 ° relative to the orifices 12 '.
  • the orifices 12 ' are associated with conduits 11', 13 'and 14 ', arranged analogously to conduits 11, 13 and 14 and which have the same function.
  • the diameters and dimensions of the ducts 11, 13 and 14 may be different from those of their 11 ′ counterparts, 13 'and 14', as well as the angles made with the axis of the device the axes of the injection ports.
  • test conditions are as follows:
  • the average SKIP diameter of droplets at the outlet of the device is 35 microns, 90 % of droplets with a diameter less than 120 microns and 99% of them having a diameter less than 290 microns.
  • test conditions are as follows:
  • the average diameter of the droplets at the outlet of the device is again 35 microns, 90% of the droplets having a diameter less than 120 microns and 99% of them having a diameter less than 290 microns.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (6)

  1. Vorrichtung zur Zerstäubung einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit, mittels mindestens eines unter Druck stehenden Hilfsgases, welche mehrere mit zu zerstäubender Flüssigkeit beaufschlagte erste Kanäle (11) mit je einer Zerstäubungsmündung (12) und mindestens zwei zweite Kanäle (13,14) aufweist, die mit einer Quelle von unter Druck stehendem Hilfsgas verbunden sind und seitlich in den ersten Kanal (11) münden, dadurch gekennzeichnet, daß die zweiten Kanäle (13,14) schräg zur Achse des ersten Kanals (11) angeordnet sind und in denselben an Stellen münden, welche im wesentlichen in derselben zur Achse des ersten Kanals (11) senkrechten Ebene in unmittelbarer Nähe der Zerstäubungsmündung (12) angeordnet sind.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die zweiten Kanäle (13,14) mit der Achse des ersten Kanals (11) einen Winkel von etwa 45° einschließen.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zweiten Kanäle (13,14) in den ersten Kanal (11) etwa 2 mm von der Zerstäubungsmündung (12) münden.
  4. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die zweiten Kanäle (13,14) eine Querabmessung aufweisen, welche im wesentlichen gleich der Querabmessung der ersten Kanäle (11) oder größer als die Querabmessung der ersten Kanäle (11) ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der erste Kanal (11) und die zweiten Kanäle (13,14) eine Querabmessung aufweisen, welche mindestens gleich 1 mm ist, beispielsweise im wesentlichen gleich 1,7 mm ist.
  6. Vorrichtung nach einem der Ansprüche 2 bis 8, gekennzeichnet durch einen Kopf (1), welcher mindestens zwei Gruppen erster Kanäle (11 bzw. 11') aufweist, deren Zerstäubungsmündungen (12 bzw. 12') gleichmäßig gemäß mindestens zwei koaxialen kreisförmigen Kränzen angeordnet sind.
EP95400386A 1994-03-11 1995-02-23 Vorrichtung zum Versprühen einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit mittels mindestens eines Hilfgases Expired - Lifetime EP0676244B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9402825 1994-03-11
FR9402825A FR2717106B1 (fr) 1994-03-11 1994-03-11 Procédé et dispositif de pulvérisation d'un liquide, notamment d'un liquide à haute viscosité, à l'aide d'au moins un gaz auxiliaire.

Publications (2)

Publication Number Publication Date
EP0676244A1 EP0676244A1 (de) 1995-10-11
EP0676244B1 true EP0676244B1 (de) 1998-09-30

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EP95400386A Expired - Lifetime EP0676244B1 (de) 1994-03-11 1995-02-23 Vorrichtung zum Versprühen einer Flüssigkeit, insbesondere einer hochviskosen Flüssigkeit mittels mindestens eines Hilfgases

Country Status (11)

Country Link
US (1) US5810252A (de)
EP (1) EP0676244B1 (de)
JP (1) JPH08103698A (de)
KR (1) KR100367149B1 (de)
CN (1) CN1056102C (de)
AT (1) ATE171652T1 (de)
CA (1) CA2144349C (de)
DE (1) DE69505035T2 (de)
ES (1) ES2123920T3 (de)
FR (1) FR2717106B1 (de)
ZA (1) ZA951973B (de)

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Also Published As

Publication number Publication date
CA2144349C (fr) 2008-10-14
KR950031242A (ko) 1995-12-18
FR2717106A1 (fr) 1995-09-15
ATE171652T1 (de) 1998-10-15
CN1133206A (zh) 1996-10-16
DE69505035T2 (de) 1999-04-08
ZA951973B (en) 1995-12-11
ES2123920T3 (es) 1999-01-16
KR100367149B1 (ko) 2003-02-19
CA2144349A1 (fr) 1995-09-12
FR2717106B1 (fr) 1996-05-31
US5810252A (en) 1998-09-22
EP0676244A1 (de) 1995-10-11
DE69505035D1 (de) 1998-11-05
JPH08103698A (ja) 1996-04-23
CN1056102C (zh) 2000-09-06

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