EP0128805A2 - Atomiseur pour deux fluides - Google Patents

Atomiseur pour deux fluides Download PDF

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Publication number
EP0128805A2
EP0128805A2 EP84401086A EP84401086A EP0128805A2 EP 0128805 A2 EP0128805 A2 EP 0128805A2 EP 84401086 A EP84401086 A EP 84401086A EP 84401086 A EP84401086 A EP 84401086A EP 0128805 A2 EP0128805 A2 EP 0128805A2
Authority
EP
European Patent Office
Prior art keywords
plug
atomizer
fuel
fluid
passage
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Withdrawn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
EP84401086A
Other languages
German (de)
English (en)
Other versions
EP0128805A3 (fr
Inventor
Norman Buckland
Steve Channell
Fred Buckingham
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.)
Forney Engineering Co
Forney International Inc
Original Assignee
Forney Engineering Co
Forney International 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 Forney Engineering Co, Forney International Inc filed Critical Forney Engineering Co
Publication of EP0128805A2 publication Critical patent/EP0128805A2/fr
Publication of EP0128805A3 publication Critical patent/EP0128805A3/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Withdrawn legal-status Critical Current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
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/005—Burners for combustion of pulverulent fuel burning a mixture of pulverulent fuel delivered as a slurry, i.e. comprising a carrying liquid
    • 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

Definitions

  • This invention relates to an atomizer, and more particularly, to an atomizer for mixing a compressible fluid with liquid fuel to atomize the latter before it is discharged into the furnace section of a boiler or the like, for combustion.
  • the burners associated with most industrial boilers utilize some type of twin fluid atomizer which functions by utilizing the stored energy in a compressible fluid, such as air or steam, to achieve the atomization.
  • a liquid fuel such as a fuel oil
  • High pressure air or steam is passed down a central tube and through a set of orifices in the distributor plug into the mixing chamber and impinges on the atomizing fluid.
  • the emulsion formed in the mixing chamber is then accelerated out of the atomizer through a plurality of exit orifices formed through an orifice plate.
  • the atomizer of the present invention includes a pair of tubular members disposed in a concentrically-spaced relationship to define an annular passage therebetween for receiving a liquid fuel.
  • a compressible fluid such as steam or air, is introduced into the inner tubular member.
  • a mixing chamber is provided for receiving the fuel and the fluid, and is in communication with a continuous annular orifice for discharging the atomized fuel.
  • the atomizer of the present invention is shown in general by the reference 10 in Figure 1 and includes an outer tubular member 12 having an inner tubular member 14 disposed therein in a concentrically spaced relationship to define an annular chamber 16 therebetween. It is understood that the outer tubular member 12 and the inner tubular member 14 can form the inner and outer barrels of a burner assembly, including a fuel gun, which introduces the liquid fuel to the passage 16, and an air source which introduces air to the inner tubular member 14.
  • the discharge end portion of the outer tubular member has an increased wall thickness to define a tapered discharge opening
  • the corresponding discharge end portion of the inner tubular member 14 extends axially inwardly from the opening 12a and is also tapered, as shown by the reference 14a. It is understood that the inner tubular member is mounted relative to the outer tubular member in any conventional manner such as by set screws (not shown), or the like.
  • a distributor plug 17 is disposed within the inner tubular member 14 in a slightly spaced relationship to the end portion 14a.
  • Four angularly spaced through passages 18 and a threaded central bore 19 are formed through the distributor plug 17 for reasons that will be described later.
  • a discharge plug shown in general by the reference 20, extends within the discharge ends 12a and 14a of the tubular members 12 and 14, respectively, and has a stem portion 22, the end portion of which is threaded and in engagement within the threaded bore 19 of the distributor plug 17.
  • the outer tapered wall portion of the discharge plug 20 is stepped as shown to form a first wall portion 20a which extends parallel with the tapered end portion 12a of the outer tubular member 12, and a second portion 20b which extends parallel with the tapered end portion 14a of the inner tubular member 14.
  • an annular passage-discharge orifice 24 is defined between the end portion 14a of the inner tubular member 14 and the corresponding wall portion 20b of the discharge plug 20, while a second annular passage-discharge orifice 26 is defined between the end portion 12a of the outer tubular member 12 and the wall portion 20a of the discharge plug 20.
  • a mixing chamber 28 is defined by the inner and outer tubular members 12 and 14, respectively, -and the discharge plug 20, and is located just downstream from the passage-discharge orifice 24 and upstream from the passage-discharge orifice 26.
  • liquid fuel such as oil or a mixture of coal and water
  • a compressible fluid such as air or steam
  • air or steam is introduced into the inner tubular member 14 and passes through the orifices 18 before passing through and exiting from the annular passage-discharge orifice 24 and into the mixing chamber 28, where it impinges upon, or shears, the fuel.
  • the emulsion formed in the mixing chamber 28 is then accelerated out oi the atomizer through the passage-discharge orifice 26 and the atomization is complete.
  • tubular members 12 and 14, or at least their end portions 12a and 14a, along with the discharge plug 20 can be manufactured of a very hard material that will withstand the wear attendant with the use of dirty fuel such as coal-water mixtures, while eliminating the need for precision drilling or surface hardening of any orifices, or the like.
  • the respective sizes of the passage-discharge orifices 24 and 26 can be selectively varied by simply adjusting the position of the discharge plug relative to the distributor plug 17.
  • FIG. 3 Another alternate embodiment of the atomizer of the present invention is shown in general by the reference 30 in Figs. 3 and 4, and includes an outer tubular member 32 extending over, and in a concentric spaced relationship to, an inner tubular member, 33 to define an annular passage 34.
  • the inner tubular member extends over a distributor plug 36 and is secured thereto in any known manner.
  • Four angularly-spaced through passages 38, along with a threaded central bore 39 are formed through the distributor plug 36.
  • the distributor plug 36 includes an extended diameter, flanged portion 36a, which has eight circumferentially spaced through passages 40 formed therethrough.
  • a discharge plug 41 is provided which has a conical portion 42 and a stem portion 43, the end portion of which is externally threaded for extending in the threaded bore 39 of the distributor plug 36.
  • a sprayer plate 44 is disposed in an abutting relationship with the front face of the flanged portion 36a of the distributor plug 36, and defines therewith a radial passage 46.
  • the sprayer plate has a tapered wall portion 44a defining a discharge opening, and a central bore portion 44b both of which, together with the outer surface of the conical plug 40 define a continuous annular discharge passage 52.
  • the orifices 38 and the radial passage 46 communicate with a mixing chamber 54 defined by the distributor plug 36, the discharge plug 41 of the sprayer plate 44 and which, in turn, communicates with the discharge passage 52.
  • a tip nut 56 is in threaded engagement with the outer tubular member 32, extends over the distributor plug 36 and the sprayer plate 44, and has a flanged portion 56a extending over a cooperating flange portion of the sprayer plate 44 to secure the components in the position shown.
  • fuel is introduced into the annular passage 34 where it passes through the passages 40, through the radial passage 46 and to the mixing chamber 54.
  • Air introduced to the inner tubular member 33 passes through the passages 38 before entering the mixing chamber 54 where it impinges on, or shears, the fuel in the latter chamber forming an emulsion which is then accelerated out of the atomizer 30 via the discharge passage 52.
  • FIG. 60 Another alternate embodiment of the atomizer of the present invention is shown in general by the reference 60 in Fig. and includes an outer tubular member 62 extending over, and in a concentric spaced relationship to, an inner tubular member 64 to define an annular passage 66.
  • the inner tubular member 64 extends over a distributor plug 68 and is secured thereto in any known manner.
  • Four angularly-spaced through passages 70 are formed through the distributor plug 68.
  • the distributor plug 68 includes an extended diameter, flanged portion 74, which has a plurality of through passages 76 formed therethrough and registering with the annular passage 66.
  • the passages 76 extend a a slight angle to the horizontal as viewed in Fig. 5 and, although only two are shown in the drawing, it is understood that a plurality, such as eight, are angularly spaced around the axis of the distributor plug 68.
  • a discharge plug 78 is provided which has a conical portion 80 and a stem portion 82, the end portion of which is externally threaded for extending in the threaded bore 72 of the distributor plug 68.
  • the flanged portion 74 of the distributor plug 68 has a stepped, tapered discharge end portion 84 which, together with the outer surfaces of the discharge plug 78 define a continuous annula discharge passage 86.
  • a mixing chamber 88 is defined at the area where the passages 76 communicate with the discharge passage 86.
  • a tip nut 90 is in threaded engagement with the outer tubular member 62, extends over the flanged portion 74 of the distributor plug 68, and has a flanged portion 90a abutting the front face of the latter flanged portion to secure the components in the position shown.
  • fuel is introduced into the annular passage 66 where it passes through the passages 76 and to the mixing chamber 88.
  • Air introduced to the inner tubular member 64 passes through the passages 70 before entering the mixing chamber 88 where it impinges on, or shears, the fuel in the latter chamber, forming an emulsion which is then accelerated out of the atomizer 60 via the discharge passage 86.
  • Fig. 5 is formed by relatively few components, enjoys the advantages of the embodiments of Figs. 1 and 3, to wit, the elimination of a plurality of individual, relatively small, orifices which are difficult to drill or surface harden, as described above.
EP84401086A 1983-06-03 1984-05-28 Atomiseur pour deux fluides Withdrawn EP0128805A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50089783A 1983-06-03 1983-06-03
US500897 1983-06-03

Publications (2)

Publication Number Publication Date
EP0128805A2 true EP0128805A2 (fr) 1984-12-19
EP0128805A3 EP0128805A3 (fr) 1986-02-19

Family

ID=23991387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401086A Withdrawn EP0128805A3 (fr) 1983-06-03 1984-05-28 Atomiseur pour deux fluides

Country Status (4)

Country Link
EP (1) EP0128805A3 (fr)
JP (1) JPS6086315A (fr)
CA (1) CA1221902A (fr)
SE (1) SE8402928L (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172099A (en) * 1985-03-05 1986-09-10 Steinmueller Gmbh L & C Atomization of fuel in a burner
EP0268432A2 (fr) * 1986-11-13 1988-05-25 National Research Council Of Canada Buse de pulvérisation
EP0162571B1 (fr) * 1984-04-17 1989-10-04 The Babcock & Wilcox Company Atomiseur
EP0734780A2 (fr) * 1995-03-27 1996-10-02 Acheson Industries Deutschland Buse binaire, en particulier pour outil de pulvérisation d'un dispositif de pulvérisation de moules et arrangement interchangeable pour ces buses
US8070483B2 (en) 2007-11-28 2011-12-06 Shell Oil Company Burner with atomizer

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799551A (en) * 1929-04-01 1931-04-07 Forney Comb Engineering Compan Oil and steam burner nozzle
GB386181A (en) * 1931-04-10 1933-01-12 Devilbiss Co Improvement in spray head
US2089673A (en) * 1935-07-22 1937-08-10 Steinmann Karl Oil atomizer
US2414459A (en) * 1944-01-28 1947-01-21 Babcock & Wilcox Co Fluid fuel burner apparatus
FR1032139A (fr) * 1951-02-07 1953-06-30 équipements mobiles de pulvérisation pour brûleurs à mazout
FR1310697A (fr) * 1961-10-20 1962-11-30 Chiron Werke Gmbh Buse pour atomiser ou pulvériser des produits liquides
US3072344A (en) * 1960-12-19 1963-01-08 Babcock & Wilcox Ltd Unitary y-jet spray head assembly
US3363840A (en) * 1964-05-25 1968-01-16 Babcock & Wilcox Ltd Liquid fuel burners
US3739990A (en) * 1971-10-15 1973-06-19 Combustion Eng Atomizing burner nozzle tip
US3747860A (en) * 1970-10-26 1973-07-24 Shell Oil Co Atomizer for liquid fuel
US3790086A (en) * 1971-05-24 1974-02-05 Hitachi Ltd Atomizing nozzle
US3807932A (en) * 1973-04-17 1974-04-30 J Dewald Method and apparatus for combustion of oil
DE2823253A1 (de) * 1977-11-30 1979-05-31 Bisa Karl Vorrichtung zum verteilen von fluessigen und pulverfoermigen materialien unter bildung von aerosol oder schaum

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616020A (en) * 1979-07-17 1981-02-16 Babcock Hitachi Kk Burner device

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799551A (en) * 1929-04-01 1931-04-07 Forney Comb Engineering Compan Oil and steam burner nozzle
GB386181A (en) * 1931-04-10 1933-01-12 Devilbiss Co Improvement in spray head
US2089673A (en) * 1935-07-22 1937-08-10 Steinmann Karl Oil atomizer
US2414459A (en) * 1944-01-28 1947-01-21 Babcock & Wilcox Co Fluid fuel burner apparatus
FR1032139A (fr) * 1951-02-07 1953-06-30 équipements mobiles de pulvérisation pour brûleurs à mazout
US3072344A (en) * 1960-12-19 1963-01-08 Babcock & Wilcox Ltd Unitary y-jet spray head assembly
FR1310697A (fr) * 1961-10-20 1962-11-30 Chiron Werke Gmbh Buse pour atomiser ou pulvériser des produits liquides
US3363840A (en) * 1964-05-25 1968-01-16 Babcock & Wilcox Ltd Liquid fuel burners
US3747860A (en) * 1970-10-26 1973-07-24 Shell Oil Co Atomizer for liquid fuel
US3790086A (en) * 1971-05-24 1974-02-05 Hitachi Ltd Atomizing nozzle
US3739990A (en) * 1971-10-15 1973-06-19 Combustion Eng Atomizing burner nozzle tip
US3807932A (en) * 1973-04-17 1974-04-30 J Dewald Method and apparatus for combustion of oil
DE2823253A1 (de) * 1977-11-30 1979-05-31 Bisa Karl Vorrichtung zum verteilen von fluessigen und pulverfoermigen materialien unter bildung von aerosol oder schaum

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162571B1 (fr) * 1984-04-17 1989-10-04 The Babcock & Wilcox Company Atomiseur
GB2172099A (en) * 1985-03-05 1986-09-10 Steinmueller Gmbh L & C Atomization of fuel in a burner
EP0268432A2 (fr) * 1986-11-13 1988-05-25 National Research Council Of Canada Buse de pulvérisation
EP0268432A3 (en) * 1986-11-13 1990-01-31 National Research Council Of Canada An atomizing nozzle assembly
EP0734780A2 (fr) * 1995-03-27 1996-10-02 Acheson Industries Deutschland Buse binaire, en particulier pour outil de pulvérisation d'un dispositif de pulvérisation de moules et arrangement interchangeable pour ces buses
EP0734780A3 (fr) * 1995-03-27 1997-03-12 Acheson Ind Deutschland Buse binaire, en particulier pour outil de pulvérisation d'un dispositif de pulvérisation de moules et arrangement interchangeable pour ces buses
US8070483B2 (en) 2007-11-28 2011-12-06 Shell Oil Company Burner with atomizer

Also Published As

Publication number Publication date
SE8402928L (sv) 1984-12-04
SE8402928D0 (sv) 1984-05-30
EP0128805A3 (fr) 1986-02-19
JPS6086315A (ja) 1985-05-15
CA1221902A (fr) 1987-05-19

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Inventor name: CHANNELL, STEVE

Inventor name: BUCKINGHAM, FRED

Inventor name: BUCKLAND, NORMAN