CN101900341A - Fuel burner nozzle for radiant tube - Google Patents
Fuel burner nozzle for radiant tube Download PDFInfo
- Publication number
- CN101900341A CN101900341A CN 201010252459 CN201010252459A CN101900341A CN 101900341 A CN101900341 A CN 101900341A CN 201010252459 CN201010252459 CN 201010252459 CN 201010252459 A CN201010252459 A CN 201010252459A CN 101900341 A CN101900341 A CN 101900341A
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- tube
- combustion
- burner
- burner nozzle
- combustion chamber
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Abstract
The invention discloses a fuel burner nozzle for radiant tube, comprising a fuel case, a burner nozzle core tube communicated with the fuel case, an air case arranged at the periphery of the burner nozzle core tube in a surrounding way and a flame guiding tube communicated with the air case; wherein the front end of the burner nozzle core tube is provided with an ignition and detection electrode used for ignition, the front end of the burner nozzle core tube is hermetically connected with a burner nozzle head, the ignition and detection electrode is arranged at the front end of the burner nozzle head, the front end part of the burner nozzle head is arranged in a combustion chamber, the rear end of the combustion chamber is communicated with the flame guiding tube, the periphery of the rear end of the combustion chamber is provided with an external tube communicated with the flame guiding tube, and a combustion air outlet is arranged between the external tube and the tube wall of the combustion chamber. The invention is in secondary firing, combustion of fuel is complete and full, energy conversion rate of system is high, and meanwhile flame is longer, thus the invention is applicable to exclusive use of radiant tube.
Description
Technical field
The present invention relates to a kind of parts of industrial burner, particularly a kind of radiant tube fuel burner nozzle.
Background technology
The burner of the burner of existing industrial furnace, it all is the burner of one-level burning, because the defective of its structure makes its combustion gas only pass through primary combustion, thereby make that the burning of combustion gas is insufficient not exclusively, influence the energy conversion rate of system, the flame temperature field of burner is also inhomogeneous, and stack gas exit velocity is not high, and the NOx discharge capacity in the smoke components is big, contaminated environment, even influence the work of system.
Summary of the invention
In order to address the above problem, the burning that the object of the present invention is to provide a kind of secondary firing, combustion gas cmpletely, the energy conversion rate height of system, the long radiant tube fuel burner nozzle of flame simultaneously.
The present invention solves the technical scheme that its problem adopts: a kind of radiant tube fuel burner nozzle, comprise the combustion gas shell, the burner core pipe that is connected with the combustion gas shell, around the air shell that is arranged at burner core pipe periphery, what be connected with the air shell leads flame tube, the front end of burner core pipe is provided with igniting and the detecting electrode that is used to light a fire, be connected with to the forward end seal of described burner core pipe the burner head, igniting and detecting electrode are positioned at the front end of burner head, the leading section of burner head is provided with a plurality of fuel gas holes, the place ahead of burner head is provided with a pipe-type chamber, burner head and igniting and detecting electrode all are positioned at the combustion chamber, the rear end of combustion chamber with lead flame tube and be connected, the rear perpheral of described combustion chamber be provided with one with lead the outer tube that flame tube is connected, be the combustion air outlet between the tube wall of outer tube and combustion chamber.
The invention has the beneficial effects as follows: owing to be provided with the burner head at the front end of burner core pipe, burner head front end is provided with the combustion chamber, the rear perpheral of combustion chamber is provided with outer tube, ejection combustion air in the outer tube, make from the flame of pipe-type chamber ejection and further burn, like this, carry out the one-level burning in the combustion chamber, outside chamber front end, combine and carry out secondary firing with combustion air, make the abundant completing combustion of combustion gas, thus the present invention be a kind of burning of having carried out secondary firing, combustion gas cmpletely, the energy conversion rate high radiant tube fuel burner nozzle of system.Because flame combustion of the present invention cmpletely, so the flame temperature field of burner is more even, helps the utilization of heat energy, the NOx discharge capacity in the smoke components is little, and NOx discharges less than 150ppm, and is free from environmental pollution, and environmental protection also can not influence the work of system.The present invention is owing to be provided with pipe-type chamber, and the combustion chamber is longer, so stack gas exit velocity is a middling speed, and about 70 meters of per seconds, combustion flame is longer, owing to adopted fractional combustion, flue-gas temperature is low than primary combustion, can not form focus on the radiant tube surface.Compact conformation of the present invention, safe and reliable, be easy to safeguard.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structure cutaway view of the present invention.
The specific embodiment
With reference to Fig. 1, a kind of radiant tube fuel burner nozzle of the present invention, comprise combustion gas shell 1, the burner core pipe 4 that is connected with combustion gas shell 1, around the air shell 3 that is arranged at burner core pipe 4 peripheries, what be connected with air shell 3 leads flame tube 5, the front end of burner core pipe 4 is provided with igniting and the detecting electrode 2 that is used to light a fire, be connected with to the forward end seal of described burner core pipe 4 burner head 6, igniting and detecting electrode 2 are positioned at the front end of burner head 6, the leading section of burner head 6 is provided with a plurality of fuel gas holes 61, the place ahead of burner head 6 is provided with a pipe-type chamber 7, burner head 6 all is positioned at combustion chamber 7 with igniting and detecting electrode 2, the rear end of combustion chamber 7 with lead flame tube 5 and be connected, the rear perpheral of described combustion chamber 7 be provided with one with lead the outer tube 8 that flame tube 5 is connected, be combustion air outlet 81 between the tube wall of outer tube 8 and combustion chamber 7.
Operation principle of the present invention: the present invention is used for U type or the heating of W type gas fired radiant tubes, adopt the multistage combustion technology, combustion gas enters burner core pipe 4 by combustion gas shell 1 and sprays from fuel gas hole 61 by burner head 6, combustion air (air themperature can be preheating to 20～550 degree) enters by air shell 3 and leads flame tube 5, afterwards, portion of air enters in the combustion chamber 7, and the remainder air enters outer tube 8 and sprays from combustion air outlet 81.Combustion gas and portion of air form the one-level burning in pipe-type chamber 7, second-time burning is carried out in the place ahead outside promptly managing outside combustion chamber 7 with the air that sprays from combustion air outlet 81 then.Resistant to elevated temperatures pottery (SiSiC) material has been adopted in combustion chamber 7, owing to adopted the classification repeated combustion, flue-gas temperature is low than primary combustion, can not form focus on the radiant tube surface.
Combustion gas kind of the present invention can be natural gas, liquefied gas, town gas, coke-stove gas, high burnt gaseous mixture, producer gas etc.Combustion air temperature spends-20+650 degree scopes in, but operate as normal all.Pass through between the tube wall of combustion air by burner head 6 and pipe-type chamber 7 of one-level burning, air quantity approximately is 10～50% of total air feed, the flue gas that the one-level burning produces is by combustion chamber 7 ejections, this moment is owing to the air quantity of combustion air volume far fewer than normal need, so belong to imperfect combustion, flame temperature is between 600～1000 degree.The secondary combustion air is from combustion air outlet 81 ejections and through participating in burning behind the tube wall of combustion chamber 7, and unburnt flue gas is realized completing combustion at this and secondary combustion air.
The present invention compares with the burner that conventional one-level is burnt, the flame temperature field of this burner is more even, owing to be provided with pipe-type chamber, the combustion chamber is longer, so stack gas exit velocity is a middling speed, and about 70 meters of per seconds, combustion flame is longer, owing to adopted fractional combustion, flue-gas temperature is low than primary combustion, can not form focus on the radiant tube surface.This serial nozzle structure compactness, sufficient combustion, safe and reliable, be easy to safeguard.
The present invention is mainly used in the heating of U type or W type gas fired radiant tubes, is the combustion apparatus of a efficient, middling speed, energy-conservation low NOx drainage.The serviceability temperature of combustion air is the highest can to reach 650 degree.
In addition, the present invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present invention with essentially identical means, all should belong to protection scope of the present invention.
Claims (1)
1. radiant tube fuel burner nozzle, comprise combustion gas shell (1), the burner core pipe (4) that is connected with combustion gas shell (1), around being arranged at the peripheral air shell (3) of burner core pipe (4), what be connected with air shell (3) leads flame tube (5), the front end of burner core pipe (4) is provided with igniting and the detecting electrode (2) that is used to light a fire, it is characterized in that: be connected with to the forward end seal of described burner core pipe (4) burner head (6), igniting and detecting electrode (2) are positioned at the front end of burner head (6), the leading section of burner head (6) is provided with a plurality of fuel gas holes (61), the place ahead of burner head (6) is provided with a pipe-type chamber (7), burner head (6) all is positioned at combustion chamber (7) with igniting and detecting electrode (2), the rear end of combustion chamber (7) with lead flame tube (5) and be connected, the rear perpheral of described combustion chamber (7) be provided with one with lead the outer tube (8) that flame tube (5) is connected, be combustion air outlet (81) between the tube wall of outer tube (8) and combustion chamber (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252459 CN101900341A (en) | 2010-08-13 | 2010-08-13 | Fuel burner nozzle for radiant tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010252459 CN101900341A (en) | 2010-08-13 | 2010-08-13 | Fuel burner nozzle for radiant tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101900341A true CN101900341A (en) | 2010-12-01 |
Family
ID=43226112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010252459 Pending CN101900341A (en) | 2010-08-13 | 2010-08-13 | Fuel burner nozzle for radiant tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101900341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213421A (en) * | 2011-04-13 | 2011-10-12 | 中冶南方(武汉)威仕工业炉有限公司 | W-type radiation tube nozzle for electrode flame monitoring and application method of W-type radiation tube nozzle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3685740A (en) * | 1969-10-29 | 1972-08-22 | Air Reduction | Rocket burner with flame pattern control |
| JPS6375408A (en) * | 1986-09-19 | 1988-04-05 | Nippon Nenshiyou Syst Kk | Radiant-tube burner |
| CN87214912U (en) * | 1987-10-30 | 1988-10-12 | 重庆建筑工程学院 | Ejection type cup-shaped natural-gas infrared burner |
| CN1161558C (en) * | 1996-08-05 | 2004-08-11 | 英国氧气集团有限公司 | Low emission swirl burner |
-
2010
- 2010-08-13 CN CN 201010252459 patent/CN101900341A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3685740A (en) * | 1969-10-29 | 1972-08-22 | Air Reduction | Rocket burner with flame pattern control |
| JPS6375408A (en) * | 1986-09-19 | 1988-04-05 | Nippon Nenshiyou Syst Kk | Radiant-tube burner |
| CN87214912U (en) * | 1987-10-30 | 1988-10-12 | 重庆建筑工程学院 | Ejection type cup-shaped natural-gas infrared burner |
| CN1161558C (en) * | 1996-08-05 | 2004-08-11 | 英国氧气集团有限公司 | Low emission swirl burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213421A (en) * | 2011-04-13 | 2011-10-12 | 中冶南方(武汉)威仕工业炉有限公司 | W-type radiation tube nozzle for electrode flame monitoring and application method of W-type radiation tube nozzle |
| CN102213421B (en) * | 2011-04-13 | 2013-03-13 | 中冶南方(武汉)威仕工业炉有限公司 | W-type radiation tube nozzle for electrode flame monitoring and application method of W-type radiation tube nozzle |
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Application publication date: 20101201 |