US3638932A - Combined burner-lance for fume suppression in molten metals - Google Patents

Combined burner-lance for fume suppression in molten metals Download PDF

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Publication number
US3638932A
US3638932A US810727A US3638932DA US3638932A US 3638932 A US3638932 A US 3638932A US 810727 A US810727 A US 810727A US 3638932D A US3638932D A US 3638932DA US 3638932 A US3638932 A US 3638932A
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US
United States
Prior art keywords
tubular member
oxygen
passageway
conical sections
nozzle portion
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Expired - Lifetime
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US810727A
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English (en)
Inventor
Anthony J Masella
Edward A Grobel
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Chemetron Corp
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Chemetron Corp
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Definitions

  • ABSTRACT A burner-lance apparatus for burning large volumes of fluid fuels and especially adapted to fume suppression during refining of molten metals wherein a double flared passageway with a straight wall section therebetween is disposed in the nozzle for intermixing oxygen and natural gas.
  • a tubular member for conveying oxygen terminates upstream of the passageway and natural gas is directed around the tubular member with the natural gas stream converging into the oxygen in the converging portion of the passageway.
  • the intermixed gases pass through the straight wall section and then expand in the second flared or divergent passageway.
  • Burner devices for use in metal-treating furnaces and em are:
  • FIG. 1 is a view in side elevation of the novel bumer-lance device.
  • FIG. 2 is an enlarged view in vertical section of the burnerlance device of FIG. 1.
  • FIG. 3 is an end view taken along line 3-3 of FIG. 2.
  • FIG. 4 is a view in vertical section taken along line 4--4 of FIG. 2.
  • the combined bumer-lance apparatus shown in the drawing directs a stream of substantially pure oxygen and a fluid fuel linearly and in separate and parallel streams with one of the streams directed outwardly and circumferentially of the other.
  • a fluid fuel such as natural gas is directed in a manner to intersect with the inner oxygen gas stream and to be intermixed therewith.
  • the inner oxygen stream is introduced into the outer natural gas stream at a point where the outer stream is directed toward the inner stream but in a manner not to substantially reduce the flow of natural gas. This effects a commingling of the natural gas and the oxygen in a first zone.
  • the combined streams are passed through an intermediate zone wherein a uniform cross-sectional dimension of the stream is maintained.
  • the stream is directed into an expansion zone with some restriction where the fuel is combusted with some oxygen and the remaining oxygen used in combination with the fuel for refining.
  • the inner oxygen stream is directed at a faster velocity thanthe outer natural gas stream to afford an aspirating effect.
  • the use of this particular method and apparatus is found to have particular advantages in the suppression of fumes in the refining of steel in metal-making furnaces.
  • the flame should strike the surface of the molten metal at an angle in the range of about 3075 with the tip of the burner positioned as close to the surface of the slag as possible. Best results are effected with a molten steel bath at a temperature of about 3000" F. and with oxygen to natural gas ratios of from 2.521 up to 4:1 with best results being obtained when employing a 3:1 ratio.
  • Bumer-lance 10 is formed from three concentrically positioned pipes 11, 12 and 13 composed of black iron pipe. Outer pipe 13 has two rounded end portions 15 and 16 and is welded to pipe 12 at the point designated by the numeral 17. Central pipe 11 forms a chamber 20 supplying oxygen through burner 10. Pipe 11 has two extensions 11a and 11b in order to effect the desired 45 angle between the main longitudinal axis of the burner and the minor nozzle portion 23. Similar extensions of pipes 12 and 13 are similarly designated.
  • Double flared passageway 24 formed from two reducing diameter sections 25 and 26 with the smaller sections oppositely disposed and the passageway terminating coextensively with the end of the burner.
  • a straight wall section 27 is positioned between sections 25 and 26 and has a length less than either of the conical sections.
  • Oxygen pipe 11b extends a short distance into reduced diameter section 25 terminating at a point remote from straight wall section 27 and it is disposed concentrically therewith. It will be seen that the oxidizing gas tubular member. 11b has an outer diameter equal to the inner diameter of the straight wall section 27 with an inner diameter slightly smaller than the straight wall section.
  • the double flared passageway 24 is formed from two frustoconical portions derived from slightly different cones and having slightly different wall lengths.
  • the angle of taper of conical section 25 is slightly greater than that of section 26 with the wall length of section 25 being slightly longer than that of section 26.
  • Nozzle portion 23 is cooled by means of four pipes 30 which carry cooling water from chamber 31 to the tip of bumerlance 10 where the cooling water exits at the ends 33 of pipes 30.
  • the heated water is returned along the outside of pipes 30, and in chamber 28 formed by pipe 13, to water outlet pipe 34.
  • the closed chamber 28 as well as the proper positioning of pipes 30 is provided by sealing and spacing elements 35. Cool water enters chamber 31 by means of inlet pipe 37.
  • a fluidtight engagement and spacing of oxygen pipe 11 is provided by sealing element 40 which is welded to the inside of pipe 12 and the outside of pipe 11. This forms a closed tubular chamber 42 for natural gas which is introduced by means of inlet pipe 44.
  • Oxygen pipe 11 as well as extension elbow 11a and the nozzle portion llb are l-inch standard black iron schedule 40.
  • Pipes 12, 12a and 12b are 2-inch standard black iron schedule 40 and pipes 13, 13a and 13b are 4-inch black iron standard schedule 40.
  • Oxygen pipe 11b is disposed with its end 2% inches from the end of burner 10 and consequently, the end of flared passageway 24 which is positioned flush with the end of nozzle portion of burner 10.
  • the distance from the end of passageway 24 at the nozzle portion of the burner to its opposing end adjacent oxygen pipe llb is 3% inches.
  • the straight wall section 37 extends a distance of 1% inches and has an internal diameter of 1.315 inches.
  • the length of the wall section comprising conical portion 26 is 1% inches while that composing conical section 25 is 1% inches.
  • Oxygen pipe 11 is connected in a normal manner with a suitable supply of oxygen and also has a means for regulating and measuring the flow of oxygen to chamber 20.
  • gas inlet pipe 44 is connected to a suitable source of natural gas and also a regulatory and metering means.
  • regulatory and metering mechanism is of a standard variety, they are not shown in the drawing.
  • the oxygen flows through pipes 11, lla and llb inwardly and linearly at a rate of about 21,000 cubic feet per hour from the natural gas stream flowing at a rate of about 7,000 cubic feet per hour between pipes 12, 12a and 12b and pipes 11, 11a and llb which places the natural gas stream outwardly and circumferentially of the inward oxygen stream.
  • These volumes afford a stoichiometric excess of oxygen.
  • the natural gas approaches conical section it is directed inwardly toward the inner oxygen stream in a first compression zone where the oxygen and natural gas are commingled. Subscquently, the commingled stream is passed through straight wall section 27 wherein a uniform cross-sectional dimension for the commingled stream is maintained.
  • the commingled stream enters conical section 26 which permits an expansion of the commingled stream with subsequent combustion of the fluid fuel in a smooth and nonturbulent manner. Best results are obtained when the natural gas stream is directed into the first zone composed of conical section 25 at a slower velocity than the inner oxygen stream.
  • the cooling water which emerges through the end of pipe 30 at point 33 is returned along the outer side of pipe 12 between pipes 12 and 13 and their respective extensions to water outlet 34.
  • the previously described use of the three zones provides efficient combustion in a manner that the flame projecting from the tip of the burner is smooth and substantially quiet.
  • the efficient combustion and smooth firing of the burner takes place even though the tip of the burner may be employed at very close distances from the slag and surface of a molten metal bath during refining to provide fume suppression and increase metallic yield.
  • the nozzle portion 23 of burner-lance 10 is constructed at 45 angle to the main axis of the burner-lance. This permits the direction of the flame at about a 30-75 angle when thc burner-lance is introduced into a furnace from a sidewall. This angle for the bumer-lance nozzle when combined with the double flared passageway has important advantages for the bumer-lance in the fumeless refining of metals. It should be indicated that while bumerlance 10 is described with a nozzle design at a 45 angle, the nozzle could be disposed along the same axis as the major portion of the burner-lance. Further, straight wall section 27 comprising the intermediate zone could be eliminated although best results are obtained when it is employed.
  • Burner-lance 10 is described for use in the refining of steel in an electric furnace. However, it can also be advantageously employed for scrap preheating in all of the well-known metaltreating furnaces.
  • Natural gas is described as the preferred fluid fuel.
  • other fluid fuels of the gaseous type such as hydrogen or propane can be employed and liquid fuels such as fuel oil, pitch or tar.
  • Pipes 11, 11a, llb, 12, 12a, 12b, 13, 13a and 13b are described as being composed of black iron. If desired, they could be fabricated from copper or stainless steel.
  • the present burner can be fabricated without the need of special tools or materials and also has a minimum number of parts. It can be easily manipulated and the flame brought into contact with the surface of a metal bath at an angle in the range of 30-75 even though the burner-lance is introduced from a sidewall.
  • An apparatus for fume suppression while refining molten metal by burning large volumes of combustible fluid fuel with an oxidizing gas comprising a first tubular member forming a first passage, a nozzle portion in fluid communication with said first tubular member, a double flared passageway in said nozzle portion including oppositely disposed conical sections derived from slightly different cones and having slightly different wall lengths and further including a substantially straight walled section between the smallest diameter portions of the respective conical sections, said substantially straight walled section having a length less than the length of either of said conical sections, a second tubular member forming a second passage, said second tubular member being concentrically positioned with respect to said double flared passageway and terminating within one of said conical sections at a point remote from the smallest diameter portion of said one of said conical sections, the outer wall of said second tubular member having an outer diameter substantially equal to the inner diameter of said substantially straight walled section and an inner diameter slightly smaller than the inner diameter of said substantially straight walled section, the other

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
US810727A 1969-03-26 1969-03-26 Combined burner-lance for fume suppression in molten metals Expired - Lifetime US3638932A (en)

Applications Claiming Priority (1)

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US81072769A 1969-03-26 1969-03-26

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US3638932A true US3638932A (en) 1972-02-01

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US810727A Expired - Lifetime US3638932A (en) 1969-03-26 1969-03-26 Combined burner-lance for fume suppression in molten metals

Country Status (10)

Country Link
US (1) US3638932A (de)
JP (1) JPS496245B1 (de)
AT (1) AT329613B (de)
BE (1) BE747824A (de)
CA (1) CA926288A (de)
DE (1) DE2013151C3 (de)
FR (1) FR2039861A5 (de)
GB (1) GB1305426A (de)
LU (1) LU60568A1 (de)
NL (1) NL7004382A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788548A (en) * 1972-06-05 1974-01-29 Continental Can Co Control temperature blow stick for injection mold apparatus
US3793002A (en) * 1971-10-14 1974-02-19 Siderurgie Fse Inst Rech Method of introducing a combustible auxiliary liquid into blast furnace and a tuyere for carrying out the method
US3856457A (en) * 1972-12-29 1974-12-24 Air Prod & Chem Burner of the oxy-fuel type
US4190238A (en) * 1978-05-11 1980-02-26 Stahlwerke Peine-Salzgitter Ag Lance head for a fining lance
US4193317A (en) * 1977-02-09 1980-03-18 Fuji Photo Film Co., Ltd. Fine position control device
US4248409A (en) * 1978-10-16 1981-02-03 Mannesmann Demag A.G. Wolfgang-Reuter-Platz Steel furnace nozzle arrangement
EP0085961A1 (de) * 1982-02-08 1983-08-17 Sterling Drug Inc. Sauerstoffinjektor
US4564143A (en) * 1981-05-15 1986-01-14 Francois Touze Hot-blast nozzles, particularly for blast furnaces
US4913735A (en) * 1989-02-09 1990-04-03 Palmer Manufacturing & Supply, Inc. Flux injector lance for use in processing aluminum and method
US5112216A (en) * 1988-12-22 1992-05-12 Chemetics International Company Inc. Pulp mill gas combustion process
US5346133A (en) * 1993-03-25 1994-09-13 The M. W. Kellogg Company High temperature liquid injection apparatus
US6003781A (en) * 1996-11-07 1999-12-21 Bmw Rolls-Royce Gmbh Fuel injection device with a liquid-cooled injection nozzle for a combustion chamber of a gas turbine
US20130122442A1 (en) * 2009-06-08 2013-05-16 Air Products And Chemicals, Inc. Through-port oxy-fuel burner
US20130125859A1 (en) * 2010-04-30 2013-05-23 General Electric Company Fuel injector having differential tip cooling system and method
US20150292737A1 (en) * 2012-10-11 2015-10-15 Ecomb Ab (Publ) Supply device for a combustion chamber
US20170125131A1 (en) * 2015-11-04 2017-05-04 Ge-Hitachi Nuclear Energy Americas Llc Insulated solution injector including an insulating liner, system including the same, and method of injecting using the same
US10290381B2 (en) 2011-12-30 2019-05-14 Ge-Hitachi Nuclear Energy Americas Llc Method and apparatus for a high-temperature deposition solution injector
US20190338878A1 (en) * 2018-05-07 2019-11-07 Manuel Carcare Gimeno Pulsation Dampener
US10650934B2 (en) 2012-12-20 2020-05-12 Ge-Hitachi Nuclear Energy Americas Llc Insulated solution injector, system including the same, and method of injecting using the same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA786675B (en) * 1978-11-28 1980-02-27 W Bleloch Apparatus for the production of steel and iron alloys
DE19922509A1 (de) * 1999-05-15 2000-11-23 Messer Griesheim Gmbh Vorrichtung und Verfahren zur Eindüsung von Erdgas und/oder Sauerstoff
DE102012223921A1 (de) * 2012-12-20 2014-06-26 Sms Siemag Ag Blas- und Brennerlanze
JP2017032254A (ja) * 2015-08-05 2017-02-09 トヨタ自動車株式会社 バーナー
CN113983463B (zh) * 2021-12-08 2022-06-21 北京瑞晨航宇能源科技有限公司 一种纯氧燃烧器及燃烧方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR674705A (fr) * 1928-05-24 1930-01-31 Hochofenwerk Lubeck Ag Procédé de combustion sélective ou simultanée de gaz, combustibles liquides et de charbon pulvérulent dans un seul brûleur
US2546937A (en) * 1949-01-07 1951-03-27 Republic Steel Corp Apparatus for delivering a fluid into a furnace
US2928459A (en) * 1955-07-08 1960-03-15 Texaco Inc Annulus type burner assembly with replaceable inner tip
US2965370A (en) * 1956-05-14 1960-12-20 Steel Co Of Wales Ltd Oxygen lance with bent tip
US3169161A (en) * 1961-04-05 1965-02-09 Air Prod & Chem Oxygen-fuel probe
US3202201A (en) * 1962-01-15 1965-08-24 Chemetron Corp Gas burner for melting and refining scrap metal
US3232748A (en) * 1959-05-19 1966-02-01 Bot Brassert Oxygen Technik Ag Process for the production of steel
US3236281A (en) * 1963-12-19 1966-02-22 United States Steel Corp Method and apparatus for burning a mixture of liquid and gaseous fuels

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR674705A (fr) * 1928-05-24 1930-01-31 Hochofenwerk Lubeck Ag Procédé de combustion sélective ou simultanée de gaz, combustibles liquides et de charbon pulvérulent dans un seul brûleur
US2546937A (en) * 1949-01-07 1951-03-27 Republic Steel Corp Apparatus for delivering a fluid into a furnace
US2928459A (en) * 1955-07-08 1960-03-15 Texaco Inc Annulus type burner assembly with replaceable inner tip
US2965370A (en) * 1956-05-14 1960-12-20 Steel Co Of Wales Ltd Oxygen lance with bent tip
US3232748A (en) * 1959-05-19 1966-02-01 Bot Brassert Oxygen Technik Ag Process for the production of steel
US3169161A (en) * 1961-04-05 1965-02-09 Air Prod & Chem Oxygen-fuel probe
US3202201A (en) * 1962-01-15 1965-08-24 Chemetron Corp Gas burner for melting and refining scrap metal
US3236281A (en) * 1963-12-19 1966-02-22 United States Steel Corp Method and apparatus for burning a mixture of liquid and gaseous fuels

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793002A (en) * 1971-10-14 1974-02-19 Siderurgie Fse Inst Rech Method of introducing a combustible auxiliary liquid into blast furnace and a tuyere for carrying out the method
US3788548A (en) * 1972-06-05 1974-01-29 Continental Can Co Control temperature blow stick for injection mold apparatus
US3856457A (en) * 1972-12-29 1974-12-24 Air Prod & Chem Burner of the oxy-fuel type
US4193317A (en) * 1977-02-09 1980-03-18 Fuji Photo Film Co., Ltd. Fine position control device
US4190238A (en) * 1978-05-11 1980-02-26 Stahlwerke Peine-Salzgitter Ag Lance head for a fining lance
US4248409A (en) * 1978-10-16 1981-02-03 Mannesmann Demag A.G. Wolfgang-Reuter-Platz Steel furnace nozzle arrangement
US4564143A (en) * 1981-05-15 1986-01-14 Francois Touze Hot-blast nozzles, particularly for blast furnaces
EP0085961A1 (de) * 1982-02-08 1983-08-17 Sterling Drug Inc. Sauerstoffinjektor
US5112216A (en) * 1988-12-22 1992-05-12 Chemetics International Company Inc. Pulp mill gas combustion process
US4913735A (en) * 1989-02-09 1990-04-03 Palmer Manufacturing & Supply, Inc. Flux injector lance for use in processing aluminum and method
EP0617112A3 (de) * 1993-03-25 1995-03-22 Kellogg M W Co Hoch-Temperatur Einspritzvorrichtung für Flüssigkeit.
EP0617112A2 (de) * 1993-03-25 1994-09-28 The M. W. Kellogg Company Hoch-Temperatur Einspritzvorrichtung für Flüssigkeit
US5346133A (en) * 1993-03-25 1994-09-13 The M. W. Kellogg Company High temperature liquid injection apparatus
US6003781A (en) * 1996-11-07 1999-12-21 Bmw Rolls-Royce Gmbh Fuel injection device with a liquid-cooled injection nozzle for a combustion chamber of a gas turbine
US9221704B2 (en) * 2009-06-08 2015-12-29 Air Products And Chemicals, Inc. Through-port oxy-fuel burner
US20130122442A1 (en) * 2009-06-08 2013-05-16 Air Products And Chemicals, Inc. Through-port oxy-fuel burner
US20130125859A1 (en) * 2010-04-30 2013-05-23 General Electric Company Fuel injector having differential tip cooling system and method
US9464610B2 (en) * 2010-04-30 2016-10-11 General Electric Company Fuel injector having differential tip cooling system and method
US10290381B2 (en) 2011-12-30 2019-05-14 Ge-Hitachi Nuclear Energy Americas Llc Method and apparatus for a high-temperature deposition solution injector
US20150292737A1 (en) * 2012-10-11 2015-10-15 Ecomb Ab (Publ) Supply device for a combustion chamber
US10650934B2 (en) 2012-12-20 2020-05-12 Ge-Hitachi Nuclear Energy Americas Llc Insulated solution injector, system including the same, and method of injecting using the same
US20170125131A1 (en) * 2015-11-04 2017-05-04 Ge-Hitachi Nuclear Energy Americas Llc Insulated solution injector including an insulating liner, system including the same, and method of injecting using the same
US10515729B2 (en) * 2015-11-04 2019-12-24 Ge-Hitachi Nuclear Energy Americas Llc Insulated solution injector including an insulating liner, system including the same, and method of injecting using the same
US20190338878A1 (en) * 2018-05-07 2019-11-07 Manuel Carcare Gimeno Pulsation Dampener

Also Published As

Publication number Publication date
DE2013151B2 (de) 1974-08-22
DE2013151C3 (de) 1975-04-24
DE2013151A1 (de) 1971-02-04
CA926288A (en) 1973-05-15
BE747824A (de) 1970-08-31
FR2039861A5 (de) 1971-01-15
AT329613B (de) 1976-05-25
LU60568A1 (de) 1970-05-21
JPS496245B1 (de) 1974-02-13
ATA263370A (de) 1975-08-15
NL7004382A (de) 1970-09-29
GB1305426A (de) 1973-01-31

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