WO2000008383A2 - Ameliorations apportees a des bruleur a diesel - Google Patents

Ameliorations apportees a des bruleur a diesel Download PDF

Info

Publication number
WO2000008383A2
WO2000008383A2 PCT/CA1999/000703 CA9900703W WO0008383A2 WO 2000008383 A2 WO2000008383 A2 WO 2000008383A2 CA 9900703 W CA9900703 W CA 9900703W WO 0008383 A2 WO0008383 A2 WO 0008383A2
Authority
WO
WIPO (PCT)
Prior art keywords
shroud
burner
mantle
fuel
air
Prior art date
Application number
PCT/CA1999/000703
Other languages
English (en)
Other versions
WO2000008383A3 (fr
Inventor
John D. Chato
Original Assignee
Clean Energy Combustion Systems Inc.
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 Clean Energy Combustion Systems Inc. filed Critical Clean Energy Combustion Systems Inc.
Priority to AU50235/99A priority Critical patent/AU5023599A/en
Publication of WO2000008383A2 publication Critical patent/WO2000008383A2/fr
Publication of WO2000008383A3 publication Critical patent/WO2000008383A3/fr

Links

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
    • 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, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/404—Flame tubes
    • 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, e.g. burner cooling means, noise reduction means
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/406—Flame stabilising means, e.g. flame holders
    • 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, e.g. burner cooling means, noise reduction means
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • F23D11/445—Vaporising devices incorporated with burners heated by the main burner flame the flame and the vaporiser not coming into direct contact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/005—Radiant burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2204/00—Burners adapted for simultaneous or alternative combustion having more than one fuel supply
    • F23D2204/10—Burners adapted for simultaneous or alternative combustion having more than one fuel supply gaseous and liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2212/00—Burner material specifications

Definitions

  • This invention relates to burners, particularly burners for liquid fuels such as diesel fuels and methods of burning such fuels.
  • a metal fibre burner (MFB) has been developed and marketed under the trademark ACOTECH by N. V. Acotech S. A.
  • the burner uses a mantle of a refractory steel alloy known as Fecralloy.
  • the mantle is either of sintered fibre or woven fibre.
  • the mantle is located adjacent the top of the burner and the air/fuel mixture is expelled from the mantle and ignited exterior to the mantle.
  • a liquid fuel burner having a shroud with a top, a bottom and an opening near the bottom.
  • a liquid fuel injector within the shroud near the top thereof.
  • An air inlet extends into the shroud near the top.
  • a mantle extends across the opening in the shroud.
  • An air/fuel mixture is expelled through the mantle and is ignited exterior to the mantle. This heats the shroud and the fuel/air mixture within the shroud prior to combustion.
  • a method of burning a liquid fuel in a burner having a shroud with a top and a mantle The fuel is injected into the shroud near the top. Pressurized air is passed into the shroud.
  • An air/fuel mixture is ignited adjacent to the mantle and exterior to the shroud so heat therefrom heats the shroud and the mixture inside the shroud prior to combustion.
  • the mantle is at the bottom of the shroud.
  • Figure 1 is an isometric view of a liquid fuel burner according to an embodiment of the invention, with the heat shield thereof and shroud thereof shown partly broken away;
  • Figure 2 is an isometric view of the air dispersion member adjacent the top of the shroud, shown partly broken away and with two air conduits and a diesel fuel injector connected thereto:
  • Figure 3 is a bottom plan view of the shroud and mantle of the embodiment of Figure 1 ;
  • Figure 4 is a simplified side section of a liquid fuel burner according to an alternative embodiment of the invention.
  • FIG. 1 shows a burner 40 which, in this embodiment, is intended for burning diesel fuel although the burner is applicable to other liquid fuels though some modifications may be required.
  • This particular burner is a radiant burner although the invention is applicable to blue flame burners as well.
  • the burner 40 includes a shroud 42 which, in this embodiment, is of stainless steel although other metals or fireproof materials could be substituted.
  • the shroud has four sides, 44, 46, 48 and 50 as seen in Figures 1 and 3. These sides are trapezoidal in shape and enlarged downwardly from top 52 of the shroud to bottom 54 thereof. Thus the sides of the shroud diverge downwardly so the bottom 54 is significantly larger than the top 52.
  • the shroud has a flange 70 extending above the bottom on all four sides although this is not essential. There is a heat shield 71 at the top of the shroud.
  • shroud in this particular example is four-sided and with downwardly diverging sides, it may be other shapes in other embodiments.
  • the shroud may have a circular cross-section as in the example below and thereby retain a generally conical shape.
  • it may be cylindrical or square with parallel sides.
  • Other shapes are also possible.
  • the preferred embodiment has a bottom larger than the top, with tapering sides, but this is not essential.
  • Air inlets 64 and 66 extend into the member 75 as best seen in Figure 2.
  • a fuel injector 80 in this case a nozzle, which extends completely through the member 75 and has a nozzle body 82 extending therefrom inside the shroud.
  • An air atomizing nozzle is used in this example and has an air line 81 connected thereto and an inlet 62 for diesel fuel.
  • a Delavan Siphon Type SNA Air Atomizing Nozzle is used, but other devices could be substituted to atomize the fuel.
  • the member 75 is hollow with a screen 88 extending across the bottom. This member dissipates the air entering from air inlets 64 and 66 so as to provide an even flow across the cross-section of the shroud and downwardly towards the bottom.
  • the mantle in this particular example is a knitted fabric made from metal fibres.
  • the metal fibres in this example are made out of Fecralloy which is an alloy registered with the United Kingdom Atomic Energy Authority. This is a refractory steel with high oxidation resistance at elevated temperatures, particularly temperatures over 1000° C.
  • the composition of the alloy in this particular example is 20% chromium, 5% aluminum, 0.3% silicon; 0.08% manganese, 0.03% copper, 0.03% carbon, > 0.10% yttrium.
  • the balance of the alloy is iron.
  • the yttrium element is particularly important because it anchors a protective surface alumina layer to the base metal in a particularly tenacious manner.
  • mantle could be of other porous, woven, knitted, metallic or ceramic materials that allow the passage of an air/fuel mixture, but are resistant to a flame and inhibit the flame from extending into the interior of the shroud.
  • igniter 102 on the burner exterior to the shroud and adjacent to the mantle.
  • the igniter may be, for example, a known type of electronic igniter used in other diesel fuel burners.
  • the air/fuel mixture can be ignited manually with a match or lighter adjacent to the exterior of the mantle.
  • gaseous fuel such as natural gas, can be introduced into the shroud to initially ignite the mixture.
  • the air/fuel mixture passes downwardly through the interior of the shroud from the top to the bottom thereof as indicated by arrows 110.
  • the mixture passes through the mantle as indicated by arrows 112 and is ignited exterior to the mantle.
  • This burner differs from prior art burners of the type, for example, those sold under the trademark ACOTECH, in that the mantle is located at a position such that the ignited mixture heats the air/fuel mixture in the shroud prior to combustion and thereby increases the efficiency of the combustion of the fuel significantly closer to the type of combustion commonly obtained with natural gas or other gaseous fuel burners.
  • the mantle covers the otherwise open bottom of the shroud although the mantle could be in other positions such that the heat from the mantle heats the mixture within the shroud.
  • the mantle could extend about the periphery of the shroud near the bottom and the bottom could be closed off by a stainless steel member similar to the rest of the shroud.
  • Diesel fuel is pumped into the nozzle 80 through fuel inlet 62. It is expelled from nozzle body 82 in a fine mist in the known manner.
  • Pressurized air from inlets 64 and 66 passes through member 75 and is diffused by the screen 88.
  • the air and fuel mixture passes downwardly through the shroud as indicated by arrows 110.
  • the mixture passes through the porous mantle where it is ignited.
  • the ignited mixture is positioned below the shroud such that heat rises and heats the shroud as well as the air/fuel mixture therein prior to ignition of the mixture at the exterior of the mantle.
  • FIG 4 shows a diesel burner 10 according to an alternative embodiment of the invention.
  • the shroud 12 is generally conical and is made of stainless steel and imperforate in this example. It is disposed with its axis generally vertical so that it diverges downwardly from an upper end 14 closed by a blocking means 16 to a lower end 18 closed by a fire-resistant material 20 constituting a burner head (or mantle).
  • the material for the burner head may be any porous, woven, knitted, metallic or ceramic material that allows the passage of the air/fuel mixture, but does not allow the resulting flame to return back into the shroud.
  • a diesel fuel inlet 22 passes through the blocking means 16 from a source of diesel fuel outside the burner to a diesel injector 24 inside the burner. Air is fed into the injector along an injector air line 25.
  • a natural gas inlet 26 passes through the blocking means 16 from a source of natural gas outside the burner to a location 28 inside the burner where the natural gas is injected in the downward direction.
  • Other gaseous fuels such as propane may be substituted.
  • a source of ignition 30 of conventional nature is provided exterior to the shroud adjacent the exterior of the burner head 20.
  • An air inlet line 32 has the form of a conduit passing through the blocking means 16 from a source of pressurized air outside the burner.
  • the diesel injector 24 is a standard diesel air injector which typically uses air at 7 psi, the air aspirating the diesel fuel along with it to generate a mist.
  • the ignition source is first turned on, then the natural gas is turned on. After a delay of 30 seconds to one minute, the air and diesel (not the additional air line 32) are turned on.
  • the natural gas is required for only about one minute and is then turned off. At the end of this short period, the burner and the side walls are sufficiently high in temperature to keep the balance of the diesel fuel gasified as it burns. At this point the mechanism operates similarly to a normal natural gas or propane radiant burner.
  • the additional air is then adjusted and set.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Evaporation-Type Combustion Burners (AREA)

Abstract

Un brûleur à combustible liquide (40) est constitué d'une enveloppe de support (42) comprenant une partie supérieure (52) et une partie inférieure (54). Une ouverture est prévue à proximité de la partie inférieure. Une plaque (90)s'étend sur l'ouverture de l'enveloppe. Un injecteur de carburant liquide (80) est prévu dans l'enveloppe (42), à proximité de la partie supérieure (52). Une entrée d'air (64, 66) s'étend dans l'enveloppe, à proximité de la partie supérieure. Un mélange carburant/air envoyé dans la plaque (90) est enflammé à l'extérieur de la plaque (90), ce qui chauffe l'enveloppe (42) et le mélange carburant/air dans l'enveloppe (42), avant la combustion.
PCT/CA1999/000703 1998-08-04 1999-08-03 Ameliorations apportees a des bruleur a diesel WO2000008383A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU50235/99A AU5023599A (en) 1998-08-04 1999-08-03 Improvements in diesel burners

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9523898P 1998-08-04 1998-08-04
US60/095,238 1998-08-04

Publications (2)

Publication Number Publication Date
WO2000008383A2 true WO2000008383A2 (fr) 2000-02-17
WO2000008383A3 WO2000008383A3 (fr) 2002-10-03

Family

ID=22250863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1999/000703 WO2000008383A2 (fr) 1998-08-04 1999-08-03 Ameliorations apportees a des bruleur a diesel

Country Status (2)

Country Link
AU (1) AU5023599A (fr)
WO (1) WO2000008383A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332547A (en) * 1979-10-01 1982-06-01 Macdonald Jr James D Thrust augmenter ejector combustion device
US4810587A (en) * 1985-11-28 1989-03-07 N.V. Bekaert S.A. Laminated object comprising metal fibre webs
US5474442A (en) * 1989-08-21 1995-12-12 Advanced Mechanical Technology, Inc. Vaporizing diesel burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332547A (en) * 1979-10-01 1982-06-01 Macdonald Jr James D Thrust augmenter ejector combustion device
US4810587A (en) * 1985-11-28 1989-03-07 N.V. Bekaert S.A. Laminated object comprising metal fibre webs
US5474442A (en) * 1989-08-21 1995-12-12 Advanced Mechanical Technology, Inc. Vaporizing diesel burner

Also Published As

Publication number Publication date
AU5023599A (en) 2000-02-28
WO2000008383A3 (fr) 2002-10-03

Similar Documents

Publication Publication Date Title
US10760784B2 (en) Burner including a perforated flame holder spaced away from a fuel nozzle
AU664880B2 (en) Nested-fiber gas burner
DE59306997D1 (de) Stickoxidarmer brenner
US20090280447A1 (en) Backpacking stove
US6761558B1 (en) Heating apparatus using thermal reaction of brown gas
US5161964A (en) Catalytic burner
CA2145328C (fr) Lampe a combustible liquide, electroniquement allumee
EP0754917A3 (fr) Dispositif de combustion pour briquet
WO2000008383A2 (fr) Ameliorations apportees a des bruleur a diesel
CA2299481A1 (fr) Bruleurs au diesel et support
AU686151B2 (en) Apparatus and method for burning combustible gases
US5516280A (en) Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission
US20090253086A1 (en) Burner Arrangement
US2185549A (en) Method of generating a combustible gas mixture
US20050053885A1 (en) Liquid fuel oil transformation device
JPS5787517A (en) Portable gas cooking stove
RU2267703C1 (ru) Газовая радиационная горелка
US672829A (en) Lighting and heating apparatus.
JPH05141653A (ja) ガス燃焼方法およびその装置
US691068A (en) Hydrocarbon-lamp.
RU271U1 (ru) Испарительная горелка
Kostiuk et al. Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission
CA1198641A (fr) Poele a bois catalytique
KR800000238Y1 (ko) 액체연료 연소기
KR940001324Y1 (ko) 부탄가스연료 라이터의 점화 연소기구

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase
AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG