EP3480520B1 - Furnace burner - Google Patents
Furnace burner Download PDFInfo
- Publication number
- EP3480520B1 EP3480520B1 EP18193973.7A EP18193973A EP3480520B1 EP 3480520 B1 EP3480520 B1 EP 3480520B1 EP 18193973 A EP18193973 A EP 18193973A EP 3480520 B1 EP3480520 B1 EP 3480520B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- burner tip
- tip
- supply tube
- oxygen supply
- 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.)
- Active
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 229910052760 oxygen Inorganic materials 0.000 claims description 16
- 239000001301 oxygen Substances 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000015220 hamburgers Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
-
- 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, e.g. noise reduction means
- F23D14/48—Nozzles
- F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/21—Burners specially adapted for a particular use
- F23D2900/21001—Burners specially adapted for a particular use for use in blast furnaces
Definitions
- the present disclosure generally relates to an improved burner useful in apparatus such as auxiliary burners used in metal melting, decarburization, refining and processing, for example, steel making in an electric arc furnace (EAF) or blast furnace.
- EAF electric arc furnace
- auxiliary burners are used to assist in the steel making process to add thermal energy by the combustion of fuel, the injection of oxidizing gas for melt refining, foamy slag production or post combustion of carbon monoxide, and the injection of particulates for slag and foamy slag production.
- the oxidizing gas is introduced as a high velocity stream that may exceed sonic velocities.
- US 2013/086949 A1 discloses an adjustable combustion burner having the features of the preamble of claim 1. The burner allows tuning of the burner parameters using a burner insert.
- US 2016/076764 A1 discloses a submerged combustion burger with a burner tip that includes a generally central flow passage and includes a crown portion defining a circumferential cavity.
- a burner tip defining a parabolic main oxygen nozzle and V-shaped fuel supply ports; an oxygen supply tube removably attached to a burner tip for ease of cleaning or replacement and a burner tip with a tapered outer diameter for an improved mechanical seal.
- the invention comprises a burner, comprising an oxygen supply tube and a burner tip, wherein the oxygen supply tube and the burner tip define a concave face; wherein the burner tip defines a main oxygen nozzle having a parabolic shape.
- the oxygen supply tube is removably attached to the burner tip.
- an outer diameter of the burner tip is tapered.
- the concave face defines a plurality of V-shaped fuel supply ports.
- a preferred embodiment of the present invention comprises a burner, comprising an oxygen supply tube removably attached to a burner tip; wherein the burner tip has a tapered outer diameter and wherein the oxygen supply tube and the burner tip define a concave face; wherein the burner tip defines a main oxygen nozzle having a parabolic shape; and wherein the concave face defines a plurality of V-shaped fuel supply ports.
- FIGS. 1-5 show a preferred burner 10, such as a "decarb burner” or other types of burners such as for an EAF (Electric Arc Furnace), blast furnace or other type of metallurgical furnace, of the present disclosure, comprises an oxygen supply tube 12 and a burner tip 14 defining a concave face 15.
- Burner tip 14 and/or concave face 15 preferably define a groove 17 machined or otherwise, a main oxygen nozzle 13 having a parabolic shape and a plurality of V-shaped natural gas ports 16.
- the outer diameter 19 of burner tip 14 preferably is tapered to provide an improved mechanical seal.
- the burner 10 preferably comprises a ceramic pilot ignitor.
- sizes of the burner tip 14 range from 76,2 mm to 152,4 mm ( 3 inches to six inches) in diameter.
- the burner 10 may be of various lengths and water-cooled or not water-cooled.
- the oxygen supply tube 12 is removably attached to the burner tip 14 of burner 10 to provide for ease of cleaning and/or replacement of the supply tube 12 or burner tip 14.
Landscapes
- 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)
Description
- The present disclosure generally relates to an improved burner useful in apparatus such as auxiliary burners used in metal melting, decarburization, refining and processing, for example, steel making in an electric arc furnace (EAF) or blast furnace.
- Generally auxiliary burners are used to assist in the steel making process to add thermal energy by the combustion of fuel, the injection of oxidizing gas for melt refining, foamy slag production or post combustion of carbon monoxide, and the injection of particulates for slag and foamy slag production. In many instances, the oxidizing gas is introduced as a high velocity stream that may exceed sonic velocities.
- Existing furnace burners have various deficiencies that detract from the efficiency and economy of the steelmaking process.
-
US 2013/086949 A1 discloses an adjustable combustion burner having the features of the preamble of claim 1. The burner allows tuning of the burner parameters using a burner insert.US 2016/076764 A1 discloses a submerged combustion burger with a burner tip that includes a generally central flow passage and includes a crown portion defining a circumferential cavity. - In order to overcome the disadvantages associated with typical burners, it would be desirable to provide a burner that optimizes efficiencies by having a burner tip defining a parabolic main oxygen nozzle and V-shaped fuel supply ports; an oxygen supply tube removably attached to a burner tip for ease of cleaning or replacement and a burner tip with a tapered outer diameter for an improved mechanical seal.
- Many other variations are possible with the present disclosure, and those and other teachings, variations, and advantages of the present disclosure will become apparent from the description and figures of the disclosure.
- The invention comprises a burner, comprising an oxygen supply tube and a burner tip, wherein the oxygen supply tube and the burner tip define a concave face; wherein the burner tip defines a main oxygen nozzle having a parabolic shape.
- In another aspect of a burner of the present invention, the oxygen supply tube is removably attached to the burner tip.
- In yet another aspect of a burner of the present invention, an outer diameter of the burner tip is tapered.
- In another aspect of a burner of the present invention, the concave face defines a plurality of V-shaped fuel supply ports.
- Accordingly, a preferred embodiment of the present invention comprises a burner, comprising an oxygen supply tube removably attached to a burner tip; wherein the burner tip has a tapered outer diameter and wherein the oxygen supply tube and the burner tip define a concave face; wherein the burner tip defines a main oxygen nozzle having a parabolic shape; and wherein the concave face defines a plurality of V-shaped fuel supply ports.
- For the present disclosure to be easily understood and readily practiced, the present disclosure will now be described for purposes of illustration and not limitation in connection with the following figures, wherein:
-
FIG. 1 shows an exterior top, perspective view of a preferred burner according to the present disclosure; -
FIG. 2 shows an exterior top, perspective and cross-sectional view of the burner ofFIG. 1 including its burner tip section; -
FIG. 3 shows an elevational side view of a preferred burner according to the present disclosure; -
FIG. 4 shows a cross-sectional view of a burner tip of a preferred burner according to the present disclosure; and -
FIG. 5 shows an elevational end view of a burner tip of a preferred burner according to the present disclosure. - In the following detailed description, reference is made to the accompanying examples and figures that form a part hereof, and in which is shown by way of illustration specific embodiments in which the inventive subject matter may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice them, and it is to be understood that other embodiments may be utilized and that structural, logical, and electrical changes may be made without departing from the scope of the inventive subject matter. Such embodiments of the inventive subject matter may be referred to, individually and/or collectively, herein by the term "disclosure" merely for convenience and without intending to voluntarily limit the scope of this application to any single disclosure or inventive concept if more than one is in fact disclosed.
- The following description is, therefore, not to be taken in a limited sense, and the scope of this disclosure is defined by the appended claims.
-
FIGS. 1-5 show a preferredburner 10, such as a "decarb burner" or other types of burners such as for an EAF (Electric Arc Furnace), blast furnace or other type of metallurgical furnace, of the present disclosure, comprises anoxygen supply tube 12 and aburner tip 14 defining aconcave face 15.Burner tip 14 and/orconcave face 15 preferably define agroove 17 machined or otherwise, amain oxygen nozzle 13 having a parabolic shape and a plurality of V-shapednatural gas ports 16. Theouter diameter 19 ofburner tip 14 preferably is tapered to provide an improved mechanical seal. Also, theburner 10 preferably comprises a ceramic pilot ignitor. - Preferably, sizes of the
burner tip 14 range from 76,2 mm to 152,4 mm ( 3 inches to six inches) in diameter. Theburner 10 may be of various lengths and water-cooled or not water-cooled. - Preferably the
oxygen supply tube 12 is removably attached to theburner tip 14 ofburner 10 to provide for ease of cleaning and/or replacement of thesupply tube 12 orburner tip 14. - It will be appreciated that this background description has been created by the inventors to aid the reader, and is not to be taken as an indication that any of the indicated problems were themselves appreciated in the art. While the described principles can, in some respects and embodiments, alleviate the problems inherent in other systems, it will be appreciated that the scope of the protected innovation is defined by the attached claims, and not by the ability of any disclosed feature to solve any specific problem noted herein.
Claims (4)
- A burner (10), comprising:an oxygen supply tube (12) and a burner tip (14), characterised in that the oxygen supply tube and the burner tip define a concave face (15);wherein the burner tip (14) defines a main oxygen nozzle (13) having a parabolic shape.
- The burner (10) of claim 1 wherein the oxygen supply tube (12) is removably attached to the burner tip (14).
- The burner (10) of claim 1 or 2 wherein an outer diameter of the burner tip is tapered.
- The burner (10) of any one of claims 1 to 3 wherein the concave face (15) defines a plurality of V-shaped fuel supply ports.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/803,455 US11047570B2 (en) | 2016-11-03 | 2017-11-03 | Furnace burner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3480520A1 EP3480520A1 (en) | 2019-05-08 |
EP3480520B1 true EP3480520B1 (en) | 2020-08-05 |
Family
ID=63579027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18193973.7A Active EP3480520B1 (en) | 2017-11-03 | 2018-09-12 | Furnace burner |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP3480520B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019099951A1 (en) * | 2017-11-16 | 2019-05-23 | Berry Metal Company | Fluid cooled housing system for instruments of a metal making furnace |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2215079A (en) * | 1936-07-03 | 1940-09-17 | Selas Company | Apparatus for burning gas |
US5714113A (en) * | 1994-08-29 | 1998-02-03 | American Combustion, Inc. | Apparatus for electric steelmaking |
US8875544B2 (en) * | 2011-10-07 | 2014-11-04 | Johns Manville | Burner apparatus, submerged combustion melters including the burner, and methods of use |
WO2014189499A1 (en) * | 2013-05-22 | 2014-11-27 | Johns Manville | Submerged combustion burners and melters, and methods of use |
-
2018
- 2018-09-12 EP EP18193973.7A patent/EP3480520B1/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP3480520A1 (en) | 2019-05-08 |
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