US2563683A - Gas burner for soaking pit furnaces and the like - Google Patents
Gas burner for soaking pit furnaces and the like Download PDFInfo
- Publication number
- US2563683A US2563683A US646157A US64615746A US2563683A US 2563683 A US2563683 A US 2563683A US 646157 A US646157 A US 646157A US 64615746 A US64615746 A US 64615746A US 2563683 A US2563683 A US 2563683A
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- US
- United States
- Prior art keywords
- soaking pit
- burner
- gas burner
- pipe
- pit furnaces
- 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.)
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- 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
- F23C99/00—Subject-matter not provided for in other groups of this subclass
-
- 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
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/04—Combustion apparatus using gaseous fuel
Definitions
- This invention relates to improvements in burners for the combustion of hydro-carbonaceous fuels for heating soaking pit furnaces and the like.
- the fuel such as coke oven gas
- the fuel pipe Surrounding the fuel pipe, there is provided an annular column of preheated air which provides oxygen for delayed combustion, and forms a long flame which rises to the top of the chamber where it is deflected outwardly and downwardly to pass between and around the ingots on the furnace hearth.
- the products of combustion exit from the chamber through ports located just above the hearth and are then passed through heat exchangers, such as recuperators, to preheat the incoming air.
- Figure l is a vertical section showing the burner. port and a portion of the hearth of a bottom-fired soaking pit furnace;
- Figure 2 is an enlarged plan view of the burner
- Figure 3 is a sectional elevation taken on line III-III of Figure 2.
- the numeral 2 designates a bottom-fired soaking pit furnace having a hearth 4 with a centrally located port E therein. Heated air from suitable recuperators or heat exchangers (not shown) is supplied to the relatively large port 6 and burner 8 disposed therein through conduits I which are used alternately. Fuel is supplied to the burner through a pipe I2.
- the burner 8 of my invention is disposed at the upper end of pipe I2 so that it is centrally located in the port 6.
- the burner consists of a hollow cap I4 in the form of an inverted frustum of a cone having a closed lower end I6, the upper end of which is iiush with the end of the pipe I2.
- the cap I4 is welded or otherwise secured to the pipe and has a plurality of vertical elongated slot-shaped openings i8 suitably spaced around the sloping sides thereof.
- slope of the sides and the openings are arranged to permit converging streams of gas to pass through the cap and meet at the center and near the top of the cap.
- the size and shape of the openings I8 is such that the maximum velocity of the streams for the required fuel rate is obtained. Due to the increased fuel velocity and, by the impinging of these gas streams one on another at the point of convergence, a great turbulence and breaking up of the gas streams is produced prior to mixing with the air supply thus effecting more intimate and effective mixing which in turn produces greater combustion efficiency and results in a flame of greater luminosity and temperature.
- This burner and method of preheating the gaseous fuel prior to mixing with the air supply has resulted in a saving of two to three hours in the time required to heat ingots.
- a furnace which includes'a chamber having a bottom wall formed with a port, conduits underneath said chamber for supplying preheated air to said port, and a pipe extending into said port and terminating below said chamber for supplying gaseous fuel thereto; a burner which comprises a cap mounted in the exit end of sald pipe and being in the shape of an inverted frustum of a cone having a closed bottom and sloping side walls, said bottom being disposed interiorly of said pipe, said sloping side walls having a plurality of pairs of oppositely disposed openings of elongated outline with their elongated dimensions being in the direction of slope of said side Walls, whereby said openings direct streams of gaseous fuel issuing therefrom under pressure to a point of convergence at the center line of the pipe near the top of the cap.
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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)
Description
Aug' 7 1.951 T. w. I Ewls 2563683 GAs BURNER FOR soAKING PIT FURNACES AND THE LIKE `Filed Feb. 7, 1946 i "HNR l lllllul wml INVENTORZ His ATTORNEY.
Patented Aug. 7, 1951 GAS BURNER FOR SOAKING PIT FURNACES AND THE LIKE Thomas W. Lewis, Munhall, Pa., assignor to United States Steel Company, a corporation of New Jersey Application February 7, 1946, Serial No. 646,157
1 Claim. 1
This invention relates to improvements in burners for the combustion of hydro-carbonaceous fuels for heating soaking pit furnaces and the like.
In some types of bottom-fired soaking pit furnaces, the fuel, such as coke oven gas, is supplied thereto from a vertical pipe through a port centrally located in the bottom of the heating chamber. Surrounding the fuel pipe, there is provided an annular column of preheated air which provides oxygen for delayed combustion, and forms a long flame which rises to the top of the chamber where it is deflected outwardly and downwardly to pass between and around the ingots on the furnace hearth. The products of combustion exit from the chamber through ports located just above the hearth and are then passed through heat exchangers, such as recuperators, to preheat the incoming air. From the foregoing, it is seen that the efficiency of the furnace depends on the thoroughness with which the air and gas are mixed.
Accordingly it is an object of this invention to provide a burner for soaking pit furnaces and the like which permits more efficient operation of the furnace.
It is a further object to provide a burner for soaking furnaces which efliciently mixes the fuel and preheated air and by causing a maximum of turbulence, produces a flame of maximum luminosity and temperature.
The foregoing and further objects will become apparent from the following specification when read in conjunction with the attached drawing, wherein:
Figure l is a vertical section showing the burner. port and a portion of the hearth of a bottom-fired soaking pit furnace;
Figure 2 is an enlarged plan view of the burner; and
Figure 3 is a sectional elevation taken on line III-III of Figure 2.
Referring more particularly to the drawing, the numeral 2 designates a bottom-fired soaking pit furnace having a hearth 4 with a centrally located port E therein. Heated air from suitable recuperators or heat exchangers (not shown) is supplied to the relatively large port 6 and burner 8 disposed therein through conduits I which are used alternately. Fuel is supplied to the burner through a pipe I2.
The burner 8 of my invention is disposed at the upper end of pipe I2 so that it is centrally located in the port 6. The burner consists of a hollow cap I4 in the form of an inverted frustum of a cone having a closed lower end I6, the upper end of which is iiush with the end of the pipe I2. The cap I4 is welded or otherwise secured to the pipe and has a plurality of vertical elongated slot-shaped openings i8 suitably spaced around the sloping sides thereof. The
slope of the sides and the openings are arranged to permit converging streams of gas to pass through the cap and meet at the center and near the top of the cap. The size and shape of the openings I8 is such that the maximum velocity of the streams for the required fuel rate is obtained. Due to the increased fuel velocity and, by the impinging of these gas streams one on another at the point of convergence, a great turbulence and breaking up of the gas streams is produced prior to mixing with the air supply thus effecting more intimate and effective mixing which in turn produces greater combustion efficiency and results in a flame of greater luminosity and temperature.
This burner and method of preheating the gaseous fuel prior to mixing with the air supply has resulted in a saving of two to three hours in the time required to heat ingots.
While I have shown and described one specific embodiment of my invention, it will be understood that this embodiment is merely for the purpose of illustration and description and that various other forms may be devised within the scope of my invention. as defined in the appended claim.
I claim:
In combination, a furnace which includes'a chamber having a bottom wall formed with a port, conduits underneath said chamber for supplying preheated air to said port, and a pipe extending into said port and terminating below said chamber for supplying gaseous fuel thereto; a burner which comprises a cap mounted in the exit end of sald pipe and being in the shape of an inverted frustum of a cone having a closed bottom and sloping side walls, said bottom being disposed interiorly of said pipe, said sloping side walls having a plurality of pairs of oppositely disposed openings of elongated outline with their elongated dimensions being in the direction of slope of said side Walls, whereby said openings direct streams of gaseous fuel issuing therefrom under pressure to a point of convergence at the center line of the pipe near the top of the cap.
THOMAS W. LEWIS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 502,710 Ferguson Aug. 8, 1893 2,297,696 Elder Oct. 6, 1942 FOREIGN PATENTS Number Country Date 23,217 Great Britain of 1903 19,073 Great Britain of 1914 106,654 Switzerland Oct. 16, 1924
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US646157A US2563683A (en) | 1946-02-07 | 1946-02-07 | Gas burner for soaking pit furnaces and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US646157A US2563683A (en) | 1946-02-07 | 1946-02-07 | Gas burner for soaking pit furnaces and the like |
Publications (1)
Publication Number | Publication Date |
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US2563683A true US2563683A (en) | 1951-08-07 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US646157A Expired - Lifetime US2563683A (en) | 1946-02-07 | 1946-02-07 | Gas burner for soaking pit furnaces and the like |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3690636A (en) * | 1970-12-03 | 1972-09-12 | United States Steel Corp | Recuperative furnaces |
EP0002036A1 (en) * | 1977-11-10 | 1979-05-30 | John Junior Maksim | Burners for soaking pit furnaces |
US4509915A (en) * | 1981-09-21 | 1985-04-09 | Osaka Gas Company Limited | Liquid fuel combustion apparatus |
US5123401A (en) * | 1989-09-27 | 1992-06-23 | Icg Propane Inc. | Combustion heating apparatus |
US11397026B2 (en) * | 2019-10-29 | 2022-07-26 | Robertshaw Controls Company | Burner for gas-fired furnace |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US502710A (en) * | 1893-08-08 | Hydrocarbon-furnace | ||
GB190323217A (en) * | 1903-10-27 | 1904-09-01 | James Keith | Improvements in Gas Supply Apparatus for Yarn Gassing Frames. |
GB191419073A (en) * | 1914-08-26 | 1915-07-29 | Josiah Mower Wallwin | Improvements in Atmospheric Gas Burners. |
CH106654A (en) * | 1923-09-07 | 1924-10-16 | Perdrisat Charles | Gas burner. |
US2297696A (en) * | 1940-10-29 | 1942-10-06 | Elder Harold Griffin | Furnace |
-
1946
- 1946-02-07 US US646157A patent/US2563683A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US502710A (en) * | 1893-08-08 | Hydrocarbon-furnace | ||
GB190323217A (en) * | 1903-10-27 | 1904-09-01 | James Keith | Improvements in Gas Supply Apparatus for Yarn Gassing Frames. |
GB191419073A (en) * | 1914-08-26 | 1915-07-29 | Josiah Mower Wallwin | Improvements in Atmospheric Gas Burners. |
CH106654A (en) * | 1923-09-07 | 1924-10-16 | Perdrisat Charles | Gas burner. |
US2297696A (en) * | 1940-10-29 | 1942-10-06 | Elder Harold Griffin | Furnace |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3690636A (en) * | 1970-12-03 | 1972-09-12 | United States Steel Corp | Recuperative furnaces |
EP0002036A1 (en) * | 1977-11-10 | 1979-05-30 | John Junior Maksim | Burners for soaking pit furnaces |
US4509915A (en) * | 1981-09-21 | 1985-04-09 | Osaka Gas Company Limited | Liquid fuel combustion apparatus |
US5123401A (en) * | 1989-09-27 | 1992-06-23 | Icg Propane Inc. | Combustion heating apparatus |
US11397026B2 (en) * | 2019-10-29 | 2022-07-26 | Robertshaw Controls Company | Burner for gas-fired furnace |
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