CN105090960A - Burner - Google Patents
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- CN105090960A CN105090960A CN201510359118.8A CN201510359118A CN105090960A CN 105090960 A CN105090960 A CN 105090960A CN 201510359118 A CN201510359118 A CN 201510359118A CN 105090960 A CN105090960 A CN 105090960A
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- flue gas
- protection channel
- fuel
- gas protection
- channel
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Abstract
The invention discloses a burner. The burner comprises a shell body, a burning torch and a center wind passage. The center wind passage is arranged in the shell body. The burning torch is arranged in the center wind passage. The shell body is provided with an air inlet. The center wind passage is connected with the air inlet. The periphery of the center wind passage is provided with at least one smoke protection channel. The smoke protection channel/channels is/are connected with a smoke inlet. A fuel torch/fuel torches is/are arranged in the smoke protection channel/channels. The fuel torch/fuel torches is/are connected with a fuel inlet. A fuel medium passage/passages is/ are arranged in the smoke protection channel/channels, so that the fuel density on fire is reduced; the interval on fire is extended; the sectional area of the initial flame is enlarged; the temperature of the flame high-temperature region is effectively decreased. Therefore, the generation conditions of nitrogen oxide are effectively restrained, combustion is full, and the generation of the nitrogen oxide is reduced. Meanwhile, the service life of a temperature-resistant component/components on the head portion/portions of the fuel torch/fuel torches can be greatly prolonged due to the cooling protection of smoke.
Description
Technical field
The present invention relates to field of combustion technology, be specifically related to a kind of burner.
Background technology
Along with developing rapidly of China's industry, industrial energy consumption sharply increases, the flue gas of discharge is day by day serious to the pollution of environment, and national environmental protection department has brought up to developed country's peer-level to standard limit of smog release, original burner product run the smoke components that produces especially discharged nitrous oxides value be difficult to reach current discharge standard.
The nitrogen oxide mainly NO that burning produces, in combustion process, the constructive ways of NO mainly contains three kinds, Quick-type (PromptNO), fuel type (FuelNO) and heating power type (ThermalNO).Wherein Quick-type NO and fuel type NO growing amount less, generally reduce the generation of nitrogen oxides in effluent by controlling thermal NO.
Existing low-NO_x combustion technology is mainly through based on the technological means such as bias combustion, flue gas recirculation, and wherein flue gas recirculating technique Be very effective, applies wider.Flue gas recirculation sends a combustion product gases part back to blower system, reduces the oxygen concentration in gaseous mixture, play heat absorption body simultaneously, thus reduce ignition temperature, suppresses the generation of thermal NO.The shortcomings such as this kind of flue gas recirculating technique exists combustion instability, imperfect combustion, heat loss increase, environment protecting is undesirable.
Summary of the invention
Provide hereinafter about brief overview of the present invention, to provide about the basic comprehension in some of the present invention.Should be appreciated that this general introduction is not summarize about exhaustive of the present invention.It is not that intention determines key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
The object of the embodiment of the present invention is that to solve current existing flue gas recirculating technique combustion flame unstable, insufficient defect of burning, and provides that a kind of combustion flame is stablized, the burner of sufficient combustion.
To achieve these goals, the technical scheme that the present invention takes is:
A kind of burner; comprise housing, burning torch and center wind duct; center wind duct is provided with in described housing; be provided with burning torch in described center wind duct, described housing is provided with air intake, and described center wind duct connects described air intake; the outer of described center wind duct is arranged with at least one flue gas protection channel; described flue gas protection channel connects smoke inlet, is provided with fuel gun in described flue gas protection channel, and described fuel gun connects fuel inlet.
Compared with prior art, the invention has the beneficial effects as follows:
Fuel medium channel setting of the present invention is in flue gas protection channel, and fuel enters burner hearth and spreads, catches fire, burns under flue gas protection, and formation stabilizes the flame.This procedure reduces fuel density when catching fire, extend between ignition zone, expand the sectional area of initial flame, significantly reduce the temperature of flame high-temperature region, thus restrained effectively the formation condition of nitrogen oxide, sufficient combustion, reduce the generation of nitrogen oxide, make the growing amount of gas burner nitrogen oxide be better than environment protection emission requirement, oil burner formation of nitrogen oxides is close to reaching environment protection emission requirement.Meanwhile, the head heatproof parts of fuel gun of the present invention, owing to there being the cooling protection of flue gas, can improve service life greatly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The sectional view of the burner that Fig. 1 provides for the embodiment of the present invention;
The Facad structure schematic diagram of the burner that Fig. 2 provides for the embodiment of the present invention.
Reference numeral:
1, centre wind cyclone; 2, Secondary Air cyclone; 3, burning torch; 4, fuel gun; 5, flue gas protection channel; 6, air conditioning mechanism; 7, flue gas governor motion; 8, fiery inspection equipment; 9, cyclone adjusting yoke; 10, center wind duct; 11, secondary air channel; 12, outer wind passage; 13, fuel gun spout; 14, flue gas protection channel spout; 15, outer wind snout; 16, swirl flow wind snout; 17, internal layer wind snout; 18, Swirl wind snout; 19, housing; 20, air intake; 21, smoke inlet; 22, fuel inlet.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.The element described in an accompanying drawing of the present invention or a kind of embodiment and feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and process in illustrating.Based on the embodiment in the present invention, those of ordinary skill in the art, not paying the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1; a kind of burner; comprise housing 19, burning torch 3 and center wind duct 10, in housing 19, be provided with center wind duct 10, in center wind duct 10, be provided with burning torch 3; housing 19 is provided with air intake 20; center wind duct 10 connects air intake 20, and the outer of center wind duct 10 is arranged with at least one flue gas protection channel 5, and flue gas protection channel 5 connects smoke inlet 21; be provided with fuel gun 4 in flue gas protection channel 10, fuel gun 4 connects fuel inlet 22.
The ignition zone that flue gas in flue gas protection channel of the present invention promotes fuel gun spout to away from fuel gun spout with extension, effectively can solve current low NO combustion instability in application process, the problem that the life-span is too short.Fuel can be ignited smoothly, fuel comprises fuel gas, fuel wet goods, and the present invention can stable and high effective operation, and discharged nitrous oxides value can lower than 100mg/Nm
3(3% oxygen content).Burner heating part of the present invention adopts refractory material to make, and cost is low, long service life.
In the present embodiment, flue gas protection channel 5 is two or more, correspondingly in each flue gas protection channel 5 is provided with a fuel gun 4, and/or flue gas protection channel 5 is circumferentially evenly arranged.Accordingly, fuel gun 4 is also multiple, is circumferentially evenly arranged.
Multiple spout is circumferentially symmetrical arranged, and ensures combustion flame symmetry, and meanwhile, fuel dispersion ejection, can avoid concentrating of high-temperature region.
In the present embodiment, for passing into the rear cooled flue gas produced of burning in described flue gas protection channel, the combined amount of described cooled flue gas is no more than 30% of combustion air amount.
The present invention, when not changing the oxygen content in burning air distribution, can ensure central burner flame stabilization, and flue gas recirculation can cool fuel gun shower nozzle very well simultaneously, reduces flame temperature, reaches the requirement of prolonging combustion device life-span and low nitrogen burning.
See Fig. 1 and Fig. 2; in the present embodiment; fuel gun 4 comprises the fuel gun spout 13 being arranged on one end, and flue gas protection channel 5 comprises the flue gas protection channel spout 14 being positioned at same one end with fuel gun spout 4, and fuel gun spout 13 stretches out beyond corresponding flue gas protection channel spout 14.
The setting of stretching out beyond corresponding flue gas protection channel spout of fuel gun spout does not affect fuel and sprays.And moved after between ignition zone by the flue gas of flue gas protection channel spout ejection, expand the sectional area of initial flame, significantly reduce the temperature of flame high-temperature region, thus reduce the generation of nitrogen oxide, ensure that sufficient combustion.Flue gas, through fuel gun spout, plays the effect of cooling protection to the nozzle of fuel gun spout, the service life of prolonging nozzle.
In the present embodiment, in the center wind duct 10 of burning torch 3 periphery, be provided with centre wind cyclone 1.Burning torch 3 connects fiery inspection equipment 8.Wind in center wind duct 10 can a part ofly spray from centre wind eddy flow spout 18 through centre wind cyclone 1, and another part sprays from center channel nozzle, the air outlet of wind cyclone 1 centered by centre wind eddy flow spout 18.
Burning torch is used for igniting of main burner, detachably, can be completely cut off by stop valve with main burner.Centre wind cyclone by air intake tangential component in the middle of increase, can work the effect of stabilizing the flame.The present invention is compared with general flue gas recirculating technique, and because in combustion air, oxygen content does not reduce, therefore combustion flame can better be organized, stability and high efficiency more.
In the present embodiment, be provided with default angle between the central axis of flue gas protection channel 5 and the central axis of housing 19, described default angle is 0 ~ 20 degree.
In flue gas protection channel of the present invention, flue gas is distributed by flue gas header; enter flue gas protection channel via smoke inlet, the quantity of flue gas protection channel and the flue gas protection size of spout, the angle of giving vent to anger of flue gas protection channel spout can be determined by Fluid Mechanics Computation method.
In the present embodiment, the outer of center wind duct 10 is arranged with secondary air channel 11, secondary air channel 11 connects air intake 20, and secondary air channel 11 comprises the overfire air port being positioned at same one end with fuel gun spout 4, and described overfire air port place is provided with Secondary Air cyclone 2.Wind in secondary air channel 11 is sprayed by Secondary Air cyclone spout 16, and air forces eddy flow ejection through Secondary Air, combustion flame can be made to force rotary combustion, improve efficiency of combustion.
In the present embodiment, Secondary Air cyclone 2 connects cyclone adjusting yoke 9.
Secondary Air cyclone 2 can, by movably regulating before and after cyclone adjusting yoke 9, regulate the proper ratio of pressing of rotational flow air and direct current air to distribute.
In the present embodiment, the outer of secondary air channel 11 is arranged with outer wind passage 12, and outer wind passage 12 connects air intake 20, and preferably, flue gas protection channel 5 is all arranged in outer wind passage 12.
In the present embodiment, air intake 20 is provided with air conditioning mechanism 6, and/or smoke inlet 21 is provided with flue gas governor motion 7.
Air conditioning mechanism can be damper, can regulate air intake eddy flow angle, control combustion flame profile.Flue gas governor motion can regulate the exhaust gas volumn entering flue gas protection channel, makes exhaust gas volumn reach a suitable amount, avoids because exhaust gas volumn is too small, does not play a part to protect spout, excessive and affect the stable of combustion flame.
As depicted in figs. 1 and 2, centre wind cyclone 1 of the present invention, center wind duct 10 organization center burner, central burner is arranged in the center of the housing 19 of burner.Centre wind regulates air quantity by air conditioning mechanism 6, ensures central burner combustion with meagre oxygen.Meanwhile, centre wind cyclone 1 has steady flame effect, ensures that combustion flame root is stablized.Secondary air channel 11 of the present invention, Secondary Air cyclone 2, flue gas protection channel 5, fuel gun 4 and outer wind passage 12 form outer burner; outer burner arrangement is outside central burner; be positioned at outer wind outside centre wind by being sprayed by secondary eddy flow wind snout 16 after Secondary Air cyclone 2 eddy flow; Partial DC is sprayed by outer wind snout 15, strengthens the mixability of air and fuel.Fuel gun and flue gas protection channel uniform with some, by possible angle dispersion ejection.
The low nitrogen oxide burner of unitary tape flue gas protection channel of the present invention, directly be connected with boiler, fuel sprays from fuel gun spout, its fuel can be gas or liquid fuel, produce high-temperature flue gas, arranged by rational centre wind, Secondary Air and relatively between flow velocity design, mixed airflow mixed effect can be reached good, ensure flameholding, fully; Meanwhile, backflow flue gas, through the ejection of flue gas protection channel, is conducive to the burner noz(zle) protecting fuel gun, reduces combustion flame mean temperature, thus reduce discharged nitrous oxides value.
State in each embodiment on the invention, the sequence number of embodiment is only convenient to describe, and does not represent the quality of embodiment.The description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In the embodiments such as apparatus and method of the present invention, obviously, each parts or each step reconfigure after can decomposing, combine and/or decomposing.These decompose and/or reconfigure and should be considered as equivalents of the present invention.Simultaneously, above in the description of the specific embodiment of the invention, the feature described for a kind of embodiment and/or illustrate can use in one or more other embodiment in same or similar mode, combined with the feature in other embodiment, or substitute the feature in other embodiment.
Should emphasize, term " comprises/comprises " existence referring to feature, key element, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, key element, step or assembly.
Although last it is noted that described the present invention and advantage thereof in detail above, be to be understood that and can carry out various change when not exceeding the spirit and scope of the present invention limited by appended claim, substituting and converting.And scope of the present invention is not limited only to the specific embodiment of process, equipment, means, method and step described by description.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use perform the function substantially identical with corresponding embodiment described herein or obtain and its substantially identical result, existing and that will be developed in the future process, equipment, means, method or step according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (10)
1. a burner; comprise housing, burning torch and center wind duct; be provided with center wind duct in described housing, be provided with burning torch in described center wind duct, described housing is provided with air intake; described center wind duct connects described air intake; it is characterized in that, the outer of described center wind duct is arranged with at least one flue gas protection channel, and described flue gas protection channel connects smoke inlet; be provided with fuel gun in described flue gas protection channel, described fuel gun connects fuel inlet.
2. burner according to claim 1, is characterized in that, described flue gas protection channel is two or more, correspondingly in each flue gas protection channel is provided with a fuel gun, and/or described flue gas protection channel is circumferentially evenly arranged.
3. burner according to claim 2, is characterized in that, for passing into the rear cooled flue gas produced of burning in described flue gas protection channel, the combined amount of described cooled flue gas is no more than 30% of combustion air amount.
4. burner according to claim 3; it is characterized in that; described fuel gun comprises the fuel gun spout being arranged on one end; described flue gas protection channel comprises the flue gas protection channel spout being positioned at same one end with described fuel gun spout, and described fuel gun spout stretches out beyond corresponding described flue gas protection channel spout.
5. the burner according to any one of claim 1-4, is characterized in that, is provided with centre wind cyclone in the center wind duct of described burning torch periphery.
6. burner according to claim 5, is characterized in that, is provided with default angle between the central axis of described flue gas protection channel and the central axis of described housing, and described default angle is 0 ~ 20 degree.
7. burner according to claim 6, it is characterized in that, the outer of described center wind duct is arranged with secondary air channel, described secondary air channel connects air intake, described secondary air channel comprises the overfire air port being positioned at same one end with described fuel gun spout, and described overfire air port place is provided with Secondary Air cyclone.
8. burner according to claim 7, is characterized in that, described Secondary Air cyclone connects cyclone adjusting yoke.
9. burner according to claim 8, is characterized in that, the outer of described secondary air channel is arranged with outer wind passage, and described outer wind expanding channels air intake, described flue gas protection channel is all arranged in described outer wind passage.
10. burner according to claim 9, is characterized in that, described air intake is provided with air conditioning mechanism, and/or described smoke inlet is provided with flue gas governor motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510359118.8A CN105090960A (en) | 2015-06-25 | 2015-06-25 | Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510359118.8A CN105090960A (en) | 2015-06-25 | 2015-06-25 | Burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090960A true CN105090960A (en) | 2015-11-25 |
Family
ID=54571961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510359118.8A Pending CN105090960A (en) | 2015-06-25 | 2015-06-25 | Burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090960A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373316A (en) * | 2018-09-10 | 2019-02-22 | 常州大学 | A kind of heating natural gas hot water boiler low NO |
| CN110594733A (en) * | 2019-09-02 | 2019-12-20 | 杭州锅炉集团股份有限公司 | Converter gas burner with low NOx emission |
| CN111112299A (en) * | 2020-01-07 | 2020-05-08 | 上海锅炉厂有限公司 | Melting furnace for melting garbage fly ash and matched combustor thereof |
Citations (6)
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| CN102003710A (en) * | 2010-12-10 | 2011-04-06 | 上海诺特飞博燃烧设备有限公司 | Low emission high-power staged-combustion gas burner and gas collocation method thereof |
| CN201964411U (en) * | 2011-01-27 | 2011-09-07 | 太原锅炉集团有限公司 | High-power double-cyclone burning semi-premix gas burner |
| CN103528059A (en) * | 2013-11-12 | 2014-01-22 | 哈尔滨前程科技发展有限公司 | Multifunction substep high-oxygen combustor for industrial furnace |
| CN203744252U (en) * | 2014-02-19 | 2014-07-30 | 陈立均 | Low-pollution-zone flue gas recirculation low nitrogen oxide burner |
| CN104482561A (en) * | 2014-12-09 | 2015-04-01 | 中国科学院工程热物理研究所 | Two-way smoke recirculating counter-flow combustion method and device |
| CN204717687U (en) * | 2015-06-25 | 2015-10-21 | 上海齐耀热能工程有限公司 | Burner |
-
2015
- 2015-06-25 CN CN201510359118.8A patent/CN105090960A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003710A (en) * | 2010-12-10 | 2011-04-06 | 上海诺特飞博燃烧设备有限公司 | Low emission high-power staged-combustion gas burner and gas collocation method thereof |
| CN201964411U (en) * | 2011-01-27 | 2011-09-07 | 太原锅炉集团有限公司 | High-power double-cyclone burning semi-premix gas burner |
| CN103528059A (en) * | 2013-11-12 | 2014-01-22 | 哈尔滨前程科技发展有限公司 | Multifunction substep high-oxygen combustor for industrial furnace |
| CN203744252U (en) * | 2014-02-19 | 2014-07-30 | 陈立均 | Low-pollution-zone flue gas recirculation low nitrogen oxide burner |
| CN104482561A (en) * | 2014-12-09 | 2015-04-01 | 中国科学院工程热物理研究所 | Two-way smoke recirculating counter-flow combustion method and device |
| CN204717687U (en) * | 2015-06-25 | 2015-10-21 | 上海齐耀热能工程有限公司 | Burner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373316A (en) * | 2018-09-10 | 2019-02-22 | 常州大学 | A kind of heating natural gas hot water boiler low NO |
| CN110594733A (en) * | 2019-09-02 | 2019-12-20 | 杭州锅炉集团股份有限公司 | Converter gas burner with low NOx emission |
| CN111112299A (en) * | 2020-01-07 | 2020-05-08 | 上海锅炉厂有限公司 | Melting furnace for melting garbage fly ash and matched combustor thereof |
| CN111112299B (en) * | 2020-01-07 | 2023-10-31 | 上海锅炉厂有限公司 | Melting furnace for melting garbage fly ash |
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Application publication date: 20151125 |
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