US3076642A - Injection devices - Google Patents

Injection devices Download PDF

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Publication number
US3076642A
US3076642A US62273A US6227360A US3076642A US 3076642 A US3076642 A US 3076642A US 62273 A US62273 A US 62273A US 6227360 A US6227360 A US 6227360A US 3076642 A US3076642 A US 3076642A
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United States
Prior art keywords
duct
tube
supply means
outlet
outer tube
Prior art date
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Expired - Lifetime
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US62273A
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English (en)
Inventor
Dhenein Paul
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.)
Societe des Acieries de Pompey
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Societe des Acieries de Pompey
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Publication date
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C1/00—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air
    • F23C1/02—Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in a carrier gas or air lump and liquid fuel

Definitions

  • This invention relates in general to injection nozzles and has specific reference to a device for injecting fuel or any other liquid or fluidized, pulverulent or similar substance nto enclosures in which a relatively high temperature is maintained, for example in hot-blast tuyeres of blast-furnaces.
  • the nozzle or innermost end of the burner or tuyere cannot be properly cooled (the slightest break in the supply of carrier and cooling fluid, whether gas or vapour, involves serious consequences), the fuel undergoes a certain amount of cracking, the solid product resulting from this cracking clogs the tuyere nozzle and this failure, while being already extremely detrimental per se due to the resulting stoppage, is further aggravated by other complications characterizing the hitherto used devices, which are set forth hereafter:
  • the fuel may invade the network of carrier gas (compressed air, steam, etc.) or the carrier gas may force the fuel back to its supply tank and escape therefrom, with all the extremely serious consequences likely to arise in this case.
  • carrier gas compressed air, steam, etc.
  • an injector device of the type comprising an inner duct or tube connected with the source of the substance to be injected, and another duct or tube surrounding the rst one and adapted to carry the fluid for cooling and projecting the aforesaid substance.
  • the device according to this invention is remarkable notably in that itycomprises a support or socket-forming piece disposed externally of the aforesaid enclosure and acting on the one hand as a means for mounting the jets through which the projection uid and the substance to be injected are introduced, and on the other hand as a means for assembling and mounting the ends of said ducts or tubes.
  • This invention also contemplates providing the outer duct with ⁇ acentering and positioning member tting for example in the blast nozzle of the blast-furnace.
  • the complete device is in the form of .a single unit ⁇ adapted to be mounted from the outside through the walls of the enclosure in which the injection is to be effected.
  • FIGURE l is a longitudinal axial section of a device constructed according to the teachings of this invention.
  • FIGURE 2 is a section taken across the line II-II of FIG. l;
  • FIGURE 3 is another longitudinal axial section showing on a smaller scale the mounting of adevice of this invention in a blast-furnace, and
  • FIGURE 4 is a section taken across the line IV-IV of FIG. 3.
  • the injector device of this invention comprises an inner duct or tube 1 opening into any enclosure in which a high temperature is maintained, this inner duct or tube being secured by its oppositeend in a support-forming element or socket 2.
  • this inner duct may be mounted by means of an intermediate tubular piece 3 fitting in a bore 4 formed in the support or socket 2.
  • the tubular connecting piece 3 may be formed with an integral flange 5 tting on a ange 6 rigid with the inlet or feed pipe 7 for the substance to be projected into the enclosure.
  • the tube 1 may be formed with a jet tone 8.
  • the tube 1 is housed within an outer duct or tube 9 ⁇ of which the free end constitutes a narrower or tapered nozzle 10 converging toward the end of the inner duct.
  • a kind of annular-sectioned nozzle having tapered and convergent inner walls is formed.
  • the opposite end of the outer duct is secured in a bore 12 of the support-forming element or socket 2.
  • This bore has a perpendicular orifice 13 having tted therein the delivery end of a pipe 14 supplying the injector with cooling and projection fluid.
  • a centering piece 15 Disposed between the two ducts or tubes 1 and 9 is a centering piece 15 for example of cylindrical configuration which is formed with passages 16 (see also FIG. 2) opening into a central aperture of the piece and separated by radial partitions 17. The ends of these radial partitions 17 are in frictional contact with the inner tube or duct 9. Upstream, that is, at 18, the centering piece 15 is bevelled to form a kind of funnel 18. Of course, several centering pieces of this type may be aligned internally of the outer tube 9. Their number depends of course on the length of the injection pipe thus formed.
  • the jet issuing from the pipe of this invention is shown only very diagrammatically in FIG. 1 in the form of two thick lines 19, 20, intersecting each other at 21, and of broken lines 22.
  • the carrier or projection gas which may be itself a fuel, a combustion-assisting gas or an inert gas
  • the carrier or projection gas gushes out from the tube end in the form of a conical convergent beam which becomes divergent after 21.
  • the fuel even if it is not atomized, which is delivered from the tube 1 is carried along by the jet of carrier gas and atomized outside the injector.
  • FIGS. 3 and 4 there is shown the use of an injector device according to this invention in the case of a blastfurnace.
  • the reference numeral 23 designates the blast nozzle through which a hot blast is introduced in the direction of the arrow F.
  • the outer tube 9 is provided with radial blades or fins 24, 25 and 26 (see FIG. 4) secured on the outer tube as a function of the length of the nozzle 23.
  • these blades or lins may be secured in any suitable and desired manner on the outer walls of tube 9. Their shape and dimensions depend of course on the position to be given to the injection pipe inside said nozzle.
  • Device for injecting fuel and other liquid and pulverulent substances into enclosures wherein high temperatures are prevailing, such as blast-furnaces and the like comprising at least one inner duct-means with an outlet, lirst supply means for said substances to be injected connected to said duct-means, at least one outer tube provided for carrying a uid intended to project said substance to be injected, said outer tube surrounding said duct-means, and being provided with a nozzle having conical inner walls converging toward the outlet of said inner ductmeans whereby said fluid is carried to gush out in the form of a conical convergent beam, said nozzle having an outlet substantially coplanar with the outlet of said inner duct-means, both outlets opening in the free air, second supply means for said fluid, said supply means being connected to said outer tube, a supporting means situated at the end of said tube and duct opposite said outlets, means for securing to -said supporting means said outer tube and said second supply means for slidably mounting on
  • Device comprising at least one centering perforated element inserted between said duct and tube affording a relative sliding thereof with a smooth frictional contact, said element being hollowed to a funnel configuration on its upstream side and being provided with channels located concentrically around the longitudinal axis of said duct and tube and opened towards the said axis.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
US62273A 1960-06-21 1960-10-12 Injection devices Expired - Lifetime US3076642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR830839A FR1280598A (fr) 1960-06-21 1960-06-21 Dispositif d'injection de substances liquides, semi-liquides, pulvérulentes, fluidifiées ou analogues

Publications (1)

Publication Number Publication Date
US3076642A true US3076642A (en) 1963-02-05

Family

ID=8734005

Family Applications (1)

Application Number Title Priority Date Filing Date
US62273A Expired - Lifetime US3076642A (en) 1960-06-21 1960-10-12 Injection devices

Country Status (5)

Country Link
US (1) US3076642A (OSRAM)
BE (1) BE604348A (OSRAM)
ES (1) ES268327A1 (OSRAM)
FR (1) FR1280598A (OSRAM)
LU (1) LU40214A1 (OSRAM)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281136A (en) * 1960-09-12 1966-10-25 Arbed Method and apparatus for the gas injection into a metal bath
US3387784A (en) * 1966-10-27 1968-06-11 Chemetron Corp Burner for fluid fuels
US3547624A (en) * 1966-12-16 1970-12-15 Air Reduction Method of processing metal-bearing charge in a furnace having oxy-fuel burners in furnace tuyeres
US3608881A (en) * 1967-03-24 1971-09-28 Za Zvetni Metali K Tuyere apparatus for using liquid fuel in the fuming process
US3703279A (en) * 1969-08-15 1972-11-21 Joslyn Mfg & Supply Co Reactor
US3771473A (en) * 1971-01-20 1973-11-13 Siderurgie Fse Inst Rech Tuyere for a blast furnace and a method for operating the tuyere to atomize combustible material fed into the tuyere by a shock wave
US3811386A (en) * 1971-12-09 1974-05-21 Maximilianshuette Eisenwerk Tuyere for introducing oxygen and a protective medium into converter vessels
DE4136274A1 (de) * 1991-11-04 1993-05-06 Kortec Ag, Zug, Ch Verfahren und vorrichtung zum schutz einer in einer heisswindleitung eines hochofens angeordneten einblasvorrichtung
US5645615A (en) * 1992-08-13 1997-07-08 Ashland Inc. Molten decomposition apparatus and process
US20110197594A1 (en) * 2010-02-12 2011-08-18 General Electric Company Method of Controlling a Combustor for a Gas Turbine
US20110197588A1 (en) * 2010-02-12 2011-08-18 General Electric Company Fuel Injector Nozzle
US20110197589A1 (en) * 2010-02-12 2011-08-18 General Electric Company Fuel Injector Nozzle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU88065A1 (fr) * 1992-02-05 1993-08-17 Paul Wurth S.A. Bruleur pour un four a cuve

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US199134A (en) * 1878-01-08 Improvement in tuyeres
US370251A (en) * 1887-09-20 Half to edward b
US1629045A (en) * 1925-07-07 1927-05-17 John A Parker Blast furnace
US1729447A (en) * 1929-09-24 Cooling well foe burners
US2338623A (en) * 1941-01-30 1944-01-04 Crowe John Marshall Burner structure
US2446511A (en) * 1946-08-21 1948-08-03 Air Liquide Open-hearth steelmaking
US2829960A (en) * 1954-01-18 1958-04-08 Henry J Kaiser Company Method and metallurgical device for the refining of steel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US199134A (en) * 1878-01-08 Improvement in tuyeres
US370251A (en) * 1887-09-20 Half to edward b
US1729447A (en) * 1929-09-24 Cooling well foe burners
US1629045A (en) * 1925-07-07 1927-05-17 John A Parker Blast furnace
US2338623A (en) * 1941-01-30 1944-01-04 Crowe John Marshall Burner structure
US2446511A (en) * 1946-08-21 1948-08-03 Air Liquide Open-hearth steelmaking
US2829960A (en) * 1954-01-18 1958-04-08 Henry J Kaiser Company Method and metallurgical device for the refining of steel

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281136A (en) * 1960-09-12 1966-10-25 Arbed Method and apparatus for the gas injection into a metal bath
US3387784A (en) * 1966-10-27 1968-06-11 Chemetron Corp Burner for fluid fuels
US3547624A (en) * 1966-12-16 1970-12-15 Air Reduction Method of processing metal-bearing charge in a furnace having oxy-fuel burners in furnace tuyeres
US3608881A (en) * 1967-03-24 1971-09-28 Za Zvetni Metali K Tuyere apparatus for using liquid fuel in the fuming process
US3703279A (en) * 1969-08-15 1972-11-21 Joslyn Mfg & Supply Co Reactor
US3771473A (en) * 1971-01-20 1973-11-13 Siderurgie Fse Inst Rech Tuyere for a blast furnace and a method for operating the tuyere to atomize combustible material fed into the tuyere by a shock wave
US3811386A (en) * 1971-12-09 1974-05-21 Maximilianshuette Eisenwerk Tuyere for introducing oxygen and a protective medium into converter vessels
DE4136274A1 (de) * 1991-11-04 1993-05-06 Kortec Ag, Zug, Ch Verfahren und vorrichtung zum schutz einer in einer heisswindleitung eines hochofens angeordneten einblasvorrichtung
US5645615A (en) * 1992-08-13 1997-07-08 Ashland Inc. Molten decomposition apparatus and process
US20110197594A1 (en) * 2010-02-12 2011-08-18 General Electric Company Method of Controlling a Combustor for a Gas Turbine
US20110197588A1 (en) * 2010-02-12 2011-08-18 General Electric Company Fuel Injector Nozzle
US20110197589A1 (en) * 2010-02-12 2011-08-18 General Electric Company Fuel Injector Nozzle
US8468834B2 (en) 2010-02-12 2013-06-25 General Electric Company Fuel injector nozzle
US8555648B2 (en) * 2010-02-12 2013-10-15 General Electric Company Fuel injector nozzle
US8584467B2 (en) 2010-02-12 2013-11-19 General Electric Company Method of controlling a combustor for a gas turbine

Also Published As

Publication number Publication date
FR1280598A (fr) 1962-01-08
BE604348A (fr) 1961-11-29
ES268327A1 (es) 1961-12-16
LU40214A1 (OSRAM) 1962-12-03

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