US3680785A - Oxy-fuel burner for reducing the level of operating noise - Google Patents

Oxy-fuel burner for reducing the level of operating noise Download PDF

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Publication number
US3680785A
US3680785A US50442A US3680785DA US3680785A US 3680785 A US3680785 A US 3680785A US 50442 A US50442 A US 50442A US 3680785D A US3680785D A US 3680785DA US 3680785 A US3680785 A US 3680785A
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United States
Prior art keywords
burner
fuel
nozzle
housing
fluid
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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
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US50442A
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English (en)
Inventor
Keith A Miller
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Air Products and Chemicals Inc
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Air Products and Chemicals Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/78—Cooling burner parts
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • ABSTRACT A metallurgical burner of the type having a nozzle end 52 us. c1 ..239/132.3, 239/433 for producing a flame by combustion of fuel and n 51 1111. C1. .3051, 15/00 oxidizing fluid-
  • the burner is Characterized in that the 58 Field of Search .239/132, 132.1, 132.3, 433 nozzle contains a plurality of mixing P surrounding and projecting beyond a plurality of pairs of fuel and [56] References Cited oxidizing fluid discharge ports.
  • the mixing cups are sized so that combustion takes place inside or at the UNITED STATES PATENTS mouth of each cup thereby reducing the operating noise level of the burner.
  • FIG. 5. FIG. 4.
  • This invention pertains to a metallurgical burner of the type used in melting vessels for melting primary metals. Such burners are commonly employed to melt large volumes of metallurgical scrap that is to be subsequently refined.
  • the burners are normally placed in the wall or the roof of the furnace and employ an oxyfuel mixture that is combusted and directed at the metals being melted.
  • a burner of this type is shown in US. Pat. No. 3,1 18,608.
  • the aforementioned patent shows a plurality of individual pairs of fuel and oxygen conduits that terminate at the bottom surface of a slotted aperture on the outer surface of the burner nozzle.
  • the burner nozzle in the outward end thereof contains a plurality of these slots where the pairs of oxygen and fuel conduits supply a mixture to the surface of the burner nozzle.
  • combustion generally takes place forward of the outermost surface of the burner nozzle. This results in a high operating noise level.
  • Such a high operating noise level is disturbing to the human ear and in certain instances has caused loss of human hearing.
  • the present invention relates to a metallurgical burner that can produce melting temperatures for primary metal refining vessels using a fuel and oxidizing fluid mixture-
  • the burner of the present invention is fluid cooled and is provided with a plurality of mixing cups on the outward end of the burner nozzle to significantly decrease the operating noise level of such a burner.
  • the mixing cups insure that combustion takes place at the mouth of each cup or inwardly thereof so that the flame front never leaves the face of the burner.
  • the vburner of the present invention is readily fabricated and can be made in two sections with a quick change capability so that the nozzle end can be easily replaced. 1
  • FIG. 1 there is shown a metallurgical burner 10.
  • the burner is preferably fabricated with a two-piece housing 12 and 14.
  • the housing sections 12-14 are secured together by a quick disconnect coupling 16 such as manufactured under the tradename VICTAULIC by the Victaulic Company of America.
  • Such couplings 16 are well known to the industry and sealed by a pair of circumferential grooves 18 and 20 disposed in the housing sections of 12-14.
  • As an integral part of the coupling there is a gasket or sealing member 22 to prevent fluid leaks from the burner.
  • the upper section 14 of burner 10 has a cap 24 affixed thereto as by circumferential weld 26.
  • the cap 24 contains a central opening 28 for receiving a longitudinal conduit 30 of housing section 12.
  • a plurality of recesses on surface 28 contain a corresponding number of O-ring type sealing members 32 to insure fluidtight sealing of the cap 24 to the conduit 30. It is preferable that at least three sealing members 32 be used so that there is in effect two pressure seals in each direction.
  • Mounted on top of cap 24 is a conduit 36 which also contains an end cap 34.
  • Disposed on the end cap 34 is a fluid conduit 38 that communicates with a central aperture 40 in cap 34.
  • the aperture 40 in'cap 34 contains an O-ring sealing member 42 to assure a fluid-type seal between cap 34 and central fluid conduit 44.
  • the central fluid conduit 44 projects into conduit 38 for receiving a fluid coolant from a source not shown.
  • Conduit 36 contains a suitable coupling 46 for receipt of a fluid conduit not shown.
  • Coupling 46 can be a flange welded to conduit 36 and communicating with aperture 48 in conduit 36 for conducting a suitable oxidizing fluid into the inner area 50 defined by conduit 36 and conduit 44 and then into he interior area 52 defined by conduit 30 and conduit 44 and into the nozzle of the burner as will hereinafter be more fully described.
  • FIG. 1 is a fragmentary section taken along lines l-- to chamber 60 radially outwardly of the nozzle through passages 58 and then to passage 62 defined by the interior wall of housing 12 and the exterior wall of an inner sleeve 64 that is affixed to the nozzle 54 as by circumferential weld 66.
  • the fluid is then conducted outwardly of the burner through aperture 68 in housing 12 by means of a coupling 70 affixed to the housing, the coupling receiving a fluid conduit such as a hose.
  • the sleeve 64 in communication with conduit 30 defines an annular passage that communicates with an aperture 72 in housing 14.
  • the aperture 72 has connected thereto in fluid tight engagement therewith conduit coupling 74 for receipt of a fuel such as natural gas.
  • the fuel path, from coupling 74 through aperture 72 between sleeve 64 and conduit 30 to he nozzle 54 is isolated from the fluid path by a suitable circumferential sealing member 76 which is mounted on the interior wall of housing 14.
  • an O-ring seal 78 Between the outer wall of sleeve 64 and sealing member 76 is an O-ring seal 78 so that the burner sections can be sealed in fluidtight arrangement, yet can be readily separated.
  • the mixing cups 56 project inwardly from the outer surface 80 of noule 54 and terminate at a generally flat surface 82. Communicating with surface 82 are circumferential grooves 84 and 86 (FIG. 3) which in turn communicate with the passages defined by the sleeve 64 and conduit 30 and passage 52 (defined by conduits 30,40) respectively in the burner. As is shown in Figure the grooves 84 and 86 are machined in the nozzle body so that as the fuel and oxidizing fluid streams leave the bottom face 82 of cup 56 they are caused to impinge upon one another within the cup 56. This assures mixing of the fuel and oxidizing fluid. More importantly it is believed that the impinging streams create a negative partial pressure (relative to the burner environment) at the bottom face 82 of cup 56 so that the flame front is retained at the mouth 88 of cup 56.
  • conduit 38 is connected to a source of suitable fluid coolant such as water.
  • Coupling 70 is connected to a hose or other device for removing the fluid coolant and disposing thereof or causing the same to be cooled and recirculated.
  • Coupling 74 is connected by a suitable conduit such as a hose to a source of fuel such as natural gas.
  • Coupling 46 is connected to a source of an oxidizing fluid such as oxygen by a suitable conduit. The burner can then be lowered partially into a melting furnace and survive its environment because it is fluid cooled. The oxygen and fuel are introduced into the mixing cups 56 where they are intimately mixed and combustion results at the mouth 88 of the cups or inwardly thereof.
  • FIG. 4 an end view of a nozzle according to the present invention wherein the fuel and oxygen passages are discrete conduits and 92, 93 respectively instead of grooves as shown with respect to the embodiment of FIG. 1.
  • the noule is constructed so that conduit 90 communicates with the source of oxygen as has been described with respect to FIG. 1 and the fuel passages 92,93 communicate with the source of fuel as described in connection with the embodiment of FIG. 1.
  • the nozzle of F IG. 4 is cooled in the same manner as is the nozzle of F 1G. 1 and to that end contains a central chamber 94 and radial passages 96 for conducting the fluid between the mixing cups and then to the inner wall of the housing of the burner and then outwardly thereof.
  • a burner of the oxy-fuel type comprising a generally elongated housing with internal fluid cooling passages and internal fuel and oxidizing gas passages to produce and direct a flame at a nozzle end thereof, the improvement which comprises:
  • a nozzle containing a plurality of mixing cups extending inwardly from the outer surface of said nozzle and communicating with an internal relatively flat surface disposed normal to the longitudinal axis of the cup, containing a fuel aperture and an oxidizing fluid aperture, whereby said cups cause intimate mixing of the fuel and oxidizing fluid therein and help retain the flame front at or inwardly of the mouth of the cups to reduce the operating noise level of said burner, each of said cups having a length to diameter ratio of between 0.4 to 1.4;
  • a burner according to claim 2 wherein the cooling fluid enters the center of the nozzle and is conducted through a plurality of passages across the face of the nozzle to the sides thereof where it is directed into the housing for removal from the burner.
  • a metallurgical burner of the oxy-fuel type comprising in combination:
  • a generally cylindrical housing having a cover on one end and a nozzle on the other end;
  • the nozzle containing a plurality of mixing cups extending inwardly from the outer surface of said nozzle and communicating with an internal flat surface disposed normal to the longitudinal axis of the cup containing a fuel aperture and an oxidizing passages communicating with the fuel gas passage in the nozzle and another of the passages communicating with the oxidizing passage in the nozzle; means in the housing for introducing the fuel and oxidizing gas to the respective conduits and means in the housing for introducing and removing the coolthe housing having a plurality of internal passages for receiving cooling fluid, fuel and an oxidizing gas, the cooling fluid passages so constructed and arranged to introduce cooling fluid down the center 10 of the burner and up along the walls of the housing 6.
  • a burner according to claim 5 wherein the inward surface of each of said mixing cups contains at least one oxidizing fluid aperture and a plurality of fuel apertures.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
US50442A 1970-06-29 1970-06-29 Oxy-fuel burner for reducing the level of operating noise Expired - Lifetime US3680785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5044270A 1970-06-29 1970-06-29

Publications (1)

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US3680785A true US3680785A (en) 1972-08-01

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Application Number Title Priority Date Filing Date
US50442A Expired - Lifetime US3680785A (en) 1970-06-29 1970-06-29 Oxy-fuel burner for reducing the level of operating noise

Country Status (7)

Country Link
US (1) US3680785A (https=)
JP (1) JPS5514327B1 (https=)
BE (1) BE769172A (https=)
DE (1) DE2131825A1 (https=)
FR (1) FR2098101A5 (https=)
GB (1) GB1358587A (https=)
NL (1) NL7108915A (https=)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750952A (en) * 1970-08-05 1973-08-07 Voest Ag Nozzle-head for a water-cooled blowing lance
US3827632A (en) * 1973-09-13 1974-08-06 Berry Metal Co Fuel and oxygen lance assembly
US3915626A (en) * 1974-04-22 1975-10-28 Air Prod & Chem Oxy-oil burner
US3972517A (en) * 1974-08-05 1976-08-03 Fedor Vladimirovich Kraizinger Tuyere for introducing reactants into a bath of molten metal
US4747772A (en) * 1986-02-19 1988-05-31 Ppg Industries, Inc. Burner design for melting glass batch and the like
AU648344B2 (en) * 1990-10-16 1994-04-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for heating a thermic enclosure, and burner
US5467925A (en) * 1994-09-06 1995-11-21 Riano; Marcos D. Sulfur gun assembly with rapid service capability
US20150232770A1 (en) * 2012-08-14 2015-08-20 Thyssenkrupp Industrial Solutions Ag Device and method for introducing oxygen into a pressurized fluidized-bed gasification process

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7611260A (nl) * 1975-10-20 1977-04-22 Zink Co John Inrichting voor het verbranden van fluidums voor het daaruit terugwinnen van warmte.
JPS5957044U (ja) * 1982-10-07 1984-04-13 トヨタ自動車株式会社 Ｆｍ受信機
JPS6093841A (ja) * 1983-10-27 1985-05-25 Yaesu Musen Co Ltd 受信回路

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433610A (en) * 1944-02-25 1947-12-30 Air Reduction Water-cooled lance torch
US2861628A (en) * 1955-10-10 1958-11-25 Reginald P Fraser Liquid atomisers
US3043577A (en) * 1960-10-20 1962-07-10 Walter V Berry Lance with conduits for mixing gases located interiorly
US3118608A (en) * 1962-02-15 1964-01-21 Walter V Berry Fuel gas and oxygen injection lance employing webbed coolant deflectors
US3198436A (en) * 1962-02-15 1965-08-03 Air Prod & Chem Apparatus for supplying a plurality of fluids to a combustion zone
US3202201A (en) * 1962-01-15 1965-08-24 Chemetron Corp Gas burner for melting and refining scrap metal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433610A (en) * 1944-02-25 1947-12-30 Air Reduction Water-cooled lance torch
US2861628A (en) * 1955-10-10 1958-11-25 Reginald P Fraser Liquid atomisers
US3043577A (en) * 1960-10-20 1962-07-10 Walter V Berry Lance with conduits for mixing gases located interiorly
US3202201A (en) * 1962-01-15 1965-08-24 Chemetron Corp Gas burner for melting and refining scrap metal
US3118608A (en) * 1962-02-15 1964-01-21 Walter V Berry Fuel gas and oxygen injection lance employing webbed coolant deflectors
US3198436A (en) * 1962-02-15 1965-08-03 Air Prod & Chem Apparatus for supplying a plurality of fluids to a combustion zone

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750952A (en) * 1970-08-05 1973-08-07 Voest Ag Nozzle-head for a water-cooled blowing lance
US3827632A (en) * 1973-09-13 1974-08-06 Berry Metal Co Fuel and oxygen lance assembly
US3915626A (en) * 1974-04-22 1975-10-28 Air Prod & Chem Oxy-oil burner
US3972517A (en) * 1974-08-05 1976-08-03 Fedor Vladimirovich Kraizinger Tuyere for introducing reactants into a bath of molten metal
US4747772A (en) * 1986-02-19 1988-05-31 Ppg Industries, Inc. Burner design for melting glass batch and the like
AU648344B2 (en) * 1990-10-16 1994-04-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for heating a thermic enclosure, and burner
US5467925A (en) * 1994-09-06 1995-11-21 Riano; Marcos D. Sulfur gun assembly with rapid service capability
US20150232770A1 (en) * 2012-08-14 2015-08-20 Thyssenkrupp Industrial Solutions Ag Device and method for introducing oxygen into a pressurized fluidized-bed gasification process
US9862900B2 (en) * 2012-08-14 2018-01-09 Thyssenkrupp Industrial Solutions Ag Device and method for introducing oxygen into a pressurized fluidized-bed gasification process

Also Published As

Publication number Publication date
BE769172A (fr) 1971-12-28
NL7108915A (https=) 1971-12-31
FR2098101A5 (https=) 1972-03-03
JPS5514327B1 (https=) 1980-04-15
GB1358587A (en) 1974-07-03
DE2131825A1 (de) 1972-01-05

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