CN209909905U - Low-nitrogen high-speed gas burner for industrial furnace - Google Patents
Low-nitrogen high-speed gas burner for industrial furnace Download PDFInfo
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- CN209909905U CN209909905U CN201920465807.0U CN201920465807U CN209909905U CN 209909905 U CN209909905 U CN 209909905U CN 201920465807 U CN201920465807 U CN 201920465807U CN 209909905 U CN209909905 U CN 209909905U
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- pipe body
- air inlet
- supply device
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Abstract
The utility model provides a low nitrogen high speed gas burner for industrial furnace, including air supply device, confession gas device and combustion chamber body, air supply device is T type tee bend body, supply gas device to be the echelonment body, the anterior port of echelonment body is gas import, rear portion port for spouting burning mouthful, cavity is for supplying the gas passageway, is equipped with by preceding one-level air intake, second grade air intake, tertiary air intake, the level four air intake that distributes in proper order after to the echelonment body pipe wall that supplies gas device, and one-level to level four air intake all include a plurality of fresh air inlets around body pipe wall circumference evenly distributed, is equipped with the ignition hole on the body pipe wall between one-level air intake and the second grade air intake. The utility model discloses combustor combustion temperature remains throughout a little more than furnace temperature demand temperature, avoids appearing the phenomenon that combustion temperature is too high, nitrogen oxide production volume exceeds standard.
Description
Technical Field
The utility model relates to a combustor technical field especially relates to a low nitrogen high-speed gas burner for industrial furnace.
Background
High velocity gas burners are often used when the fuel of the industrial furnace is natural gas. The high-speed gas burner mixes air and fuel gas in a combustion cylinder according to a certain proportion during combustion, the mixture is ignited by electric sparks on the inner cylinder wall to be combusted, the mixed gas is almost fully combusted in the cylinder, nitrogen oxides generated at the combustion temperature of over 900 ℃ begin to be greatly increased, the combustion temperature of a common burner is about 1300 ℃, and the generated nitrogen oxides are in a serious standard exceeding state. Nitrogen oxides are heavily polluted with air, and therefore it is necessary to provide a low-nitrogen burner capable of reducing the emission of nitrogen oxides.
Disclosure of Invention
The technical problem solved by the utility model is to provide a low-nitrogen high-speed gas burner for an industrial furnace. The burner solves the problem that the emission of nitrogen oxides of the gas industrial furnace exceeds the standard, and has the advantages of high energy utilization rate and simple structure.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a low nitrogen high speed gas burner for industrial furnace, includes air supply device, supplies gas device and combustion chamber body, its characterized in that: the air supply device is a T-shaped three-way pipe body and comprises a straight-through pipe body and a bypass pipe body perpendicular to the straight-through pipe body, wherein the bypass pipe body is used as an air inlet pipe, the straight-through pipe body is used for installing a gas supply device, and the combustion chamber pipe body is communicated with the rear end port of the straight-through pipe body; the gas supply device is a stepped pipe body, the front end opening of the stepped pipe body is a gas inlet, the rear end opening of the stepped pipe body is a flame spraying opening, and the hollow cavity is a gas supply channel; the front end of the gas supply device is provided with a flange, the gas supply device is fixed at the front end port of the straight-through pipe body by the flange, an annular space is formed between the outer pipe wall of the stepped pipe body of the gas supply device and the inner pipe wall of the straight-through pipe body, a part of air entering from the air inlet pipe enters the combustion chamber pipe body from the annular space, and a part of air enters the stepped pipe body of the gas supply device through the first-level to fourth-level air inlets.
Furthermore, the primary air inlet is positioned at the front end of the stepped pipe body of the gas supply device, and an air inlet hole of the primary air inlet is axially vertical to the axial direction of the stepped pipe body.
Furthermore, the secondary air inlet is positioned on a step table surface in the middle of the step-shaped pipe body of the gas supply device, and an air inlet hole of the secondary air inlet is axially parallel to the step-shaped pipe body.
Furthermore, the third-level air inlet and the fourth-level air inlet are positioned on the periphery of the pipe wall at the rear part of the stepped pipe body of the gas supply device, and the air inlet holes of the third-level air inlet and the fourth-level air inlet are inclined by 15-35 degrees towards the rear end direction of the stepped pipe body.
A low nitrogen high speed gas burner for industrial furnace sets up multistage air intake on supplying gas device's echelonment body pipe wall, and the air gets into the echelonment body that supplies gas device step by step through multistage air intake and gas co-combustion, and the gas strengthens the burning step by step in the echelonment body, gets into the combustion chamber barrel at last and burns fully, and combustor combustion temperature remains a little more than furnace temperature demand temperature all the time, avoids appearing the phenomenon that combustion temperature is too high, nitrogen oxide production volume exceeds standard.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the gas supply device of the present invention;
the corresponding part names in the figure are: 1 an air supply device; 2 a gas supply device; 3 a combustion chamber tube; 11 a straight pipe body; 12 bypassing the pipe body; 21 a gas inlet; 22 a jet combustion port; 23 gas supply channel; 24 primary air inlets; 25 secondary air inlets; 26 a third-level air inlet; 27 four-stage air inlet; 28 ignition holes; 29 flange.
Best mode for carrying out the invention
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 to 2, the present invention provides a low-nitrogen high-speed gas burner for an industrial furnace, including an air supply device 1, a gas supply device 2 and a combustion chamber tube 3, wherein the air supply device is a T-shaped three-way tube, and includes a straight-through tube 11 and a bypass tube 12 perpendicular to the straight-through tube, the bypass tube serves as an air intake pipe, the straight-through tube is used for installing the gas supply device, and the combustion chamber tube 3 is communicated with a rear port of the straight-through tube 11; the gas supply device is a stepped pipe body, the front end opening of the stepped pipe body is a gas inlet 21, the rear end opening of the stepped pipe body is a flame spraying opening 22, and the hollow cavity is a gas supply channel 23, a first-stage air inlet 24, a second-stage air inlet 25, a third-stage air inlet 26 and a fourth-stage air inlet 27 which are sequentially distributed from front to back are arranged on the pipe wall of the stepped pipe body of the gas supply device, the first-stage air inlet to the fourth-stage air inlet respectively comprise a plurality of air inlet holes which are uniformly distributed around the circumference of the pipe wall of the pipe body, and ignition; the front end of the gas supply device is provided with a flange 29, the gas supply device is fixed at the front end port of the straight-through pipe body by the flange 29, the ignition hole 28 extends from the flange 29 to the outside of the gas supply device, an annular space is formed between the outer pipe wall of the stepped pipe body of the gas supply device and the inner pipe wall of the straight-through pipe body, a part of air entering from the air inlet pipe enters the pipe body of the combustion chamber from the annular space, and a part of air enters the stepped pipe body of the gas supply device through the first-level to fourth-level air. The first-stage air inlet 24 is positioned at the front end of the stepped pipe body of the gas supply device, and an air inlet hole of the first-stage air inlet is axially vertical to the axial direction of the stepped pipe body. The second-level 25 air inlet is positioned on the stepped table surface in the middle of the stepped pipe body of the gas supply device, and the air inlet hole of the second-level air inlet is axially parallel to the axial direction of the stepped pipe body. The third-level air inlet 26 and the fourth-level air inlet 27 are positioned on the periphery of the pipe wall at the rear part of the stepped pipe body of the gas supply device, and the air inlet holes of the third-level air inlet and the fourth-level air inlet are inclined by 15-35 degrees towards the rear end direction of the stepped pipe body.
The utility model discloses when specifically using, the gas gets into by gas import 21 and supplies gas device 2, and combustion-supporting air gets into by bypass body 12 and supplies air device 1. A part of air entering from the bypass pipe body 12 enters the combustion chamber pipe body from an annular space between the outer pipe wall of the stepped pipe body of the gas supply device and the inner pipe wall of the straight-through pipe body, and a part of air enters the stepped pipe body of the gas supply device through a first-stage to fourth-stage air inlet branch. The combustion-supporting air in the stepped pipe body is gradually increased to be mixed and combusted with the fuel gas, the fuel gas in the stepped pipe body is gradually combusted and finally enters the pipe body of the combustion chamber to be fully combusted, the combustion temperature of the combustor is always kept slightly higher than the temperature required by the furnace temperature, and the phenomena of overhigh combustion temperature and excessive production of nitrogen oxides are avoided.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the technical solution of the present invention without departing from the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a low nitrogen high speed gas burner for industrial furnace, includes air supply device, supplies gas device and combustion chamber body, its characterized in that: the air supply device is a T-shaped three-way pipe body and comprises a straight-through pipe body and a bypass pipe body perpendicular to the straight-through pipe body, wherein the bypass pipe body is used as an air inlet pipe, the straight-through pipe body is used for installing a gas supply device, and the combustion chamber pipe body is communicated with the rear end port of the straight-through pipe body; the gas supply device is a stepped pipe body, the front end opening of the stepped pipe body is a gas inlet, the rear end opening of the stepped pipe body is a flame spraying opening, and the hollow cavity is a gas supply channel; the front end of the gas supply device is provided with a flange, the gas supply device is fixed at the front end port of the straight-through pipe body by the flange, an annular space is formed between the outer pipe wall of the stepped pipe body of the gas supply device and the inner pipe wall of the straight-through pipe body, a part of air entering from the air inlet pipe enters the combustion chamber pipe body from the annular space, and a part of air enters the stepped pipe body of the gas supply device through the first-level to fourth-level air inlets.
2. The low-nitrogen high-velocity gas burner for industrial furnaces according to claim 1, characterized in that: the first-stage air inlet is positioned at the front end of the stepped pipe body of the gas supply device, and an air inlet hole of the first-stage air inlet is axially vertical to the axial direction of the stepped pipe body.
3. The low-nitrogen high-velocity gas burner for industrial furnaces according to claim 1, characterized in that: the second-stage air inlet is positioned on a stepped table surface in the middle of the stepped pipe body of the gas supply device, and an air inlet hole of the second-stage air inlet is axially parallel to the axial direction of the stepped pipe body.
4. The low-nitrogen high-velocity gas burner for industrial furnaces according to claim 1, characterized in that: the three-level air inlet and the four-level air inlet are positioned on the periphery of the pipe wall at the rear part of the stepped pipe body of the gas supply device, and the air inlet holes of the three-level air inlet and the four-level air inlet are inclined by 15-35 degrees towards the rear end direction of the stepped pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920465807.0U CN209909905U (en) | 2019-04-09 | 2019-04-09 | Low-nitrogen high-speed gas burner for industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920465807.0U CN209909905U (en) | 2019-04-09 | 2019-04-09 | Low-nitrogen high-speed gas burner for industrial furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209909905U true CN209909905U (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920465807.0U Expired - Fee Related CN209909905U (en) | 2019-04-09 | 2019-04-09 | Low-nitrogen high-speed gas burner for industrial furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN209909905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412485A (en) * | 2020-04-28 | 2020-07-14 | 湖南中冶长天节能环保技术有限公司 | Low-nitrogen combustion equipment and air material supply device thereof |
-
2019
- 2019-04-09 CN CN201920465807.0U patent/CN209909905U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412485A (en) * | 2020-04-28 | 2020-07-14 | 湖南中冶长天节能环保技术有限公司 | Low-nitrogen combustion equipment and air material supply device thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 Termination date: 20200409 |
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| CF01 | Termination of patent right due to non-payment of annual fee |