CN204717687U - Burner - Google Patents
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- CN204717687U CN204717687U CN201520448919.7U CN201520448919U CN204717687U CN 204717687 U CN204717687 U CN 204717687U CN 201520448919 U CN201520448919 U CN 201520448919U CN 204717687 U CN204717687 U CN 204717687U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas protection
- protection channel
- fuel
- fuel gun
- 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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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000003546 flue gas Substances 0.000 claims abstract description 72
- 239000000446 fuel Substances 0.000 claims abstract description 57
- 239000000779 smoke Substances 0.000 claims abstract description 9
- 238000004378 air conditioning Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 27
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 24
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 15
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 6
- 210000004894 snout Anatomy 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003134 recirculating effect Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 241000707825 Argyrosomus regius Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model discloses 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.Fuel medium channel setting of the present utility model is in flue gas protection channel; reduce 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.Meanwhile, the head heatproof parts of the utility model fuel gun, owing to there being the cooling protection of flue gas, can improve service life greatly.
Description
Technical field
The utility model relates to field of combustion technology, is 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 (Prompt NO), fuel type (Fuel NO) and heating power type (Thermal NO).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.
Utility model content
Provide hereinafter about brief overview of the present utility model, to provide about the basic comprehension in some of the present utility model.Should be appreciated that this general introduction is not summarize about exhaustive of the present utility model.It is not that intention determines key of the present utility model or pith, neither intended limitation scope of the present utility model.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 utility model embodiment 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 utility model is taked 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 beneficial effects of the utility model are:
Fuel medium channel setting of the present utility model 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 the utility model fuel gun, 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 utility model embodiment 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 embodiments more of the present utility model, 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 utility model embodiment;
The Facad structure schematic diagram of the burner that Fig. 2 provides for the utility model embodiment.
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 utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.The element described in an accompanying drawing of the present utility model 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 parts that have nothing to do with the utility model, known to persons of ordinary skill in the art and process in illustrating.Based on the embodiment in the utility model, those of ordinary skill in the art are not paying the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
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 the utility model flue gas protection channel 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 utility model 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 utility model 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 utility model, 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 utility model 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 utility model, 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 utility model, 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 utility model, 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 utility model, 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.
In the utility model the various embodiments described above, 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 utility model, 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 utility model.Simultaneously, in the description above to the utility model specific embodiment, 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 utility model 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 utility model limited by appended claim, substituting and converting.And scope of the present utility model 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 utility model, 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 utility model.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.
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 |
|---|---|---|---|
| CN201520448919.7U CN204717687U (en) | 2015-06-25 | 2015-06-25 | Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520448919.7U CN204717687U (en) | 2015-06-25 | 2015-06-25 | Burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204717687U true CN204717687U (en) | 2015-10-21 |
Family
ID=54316686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520448919.7U Active CN204717687U (en) | 2015-06-25 | 2015-06-25 | Burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204717687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090960A (en) * | 2015-06-25 | 2015-11-25 | 上海齐耀热能工程有限公司 | Burner |
-
2015
- 2015-06-25 CN CN201520448919.7U patent/CN204717687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090960A (en) * | 2015-06-25 | 2015-11-25 | 上海齐耀热能工程有限公司 | Burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201108 2nd Floor, No. 3111 Huaning Road, Minhang District, Shanghai Patentee after: SHANGHAI QIYAO THERMAL ENERGY ENGINEERING Co.,Ltd. Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 2nd Floor, No. 3111 Huaning Road, Minhang District, Shanghai Patentee before: SHANGHAI QIYAO THERMAL ENERGY ENGINEERING Co.,Ltd. Patentee before: Shanghai Marine Diesel Engine Research Institute |