CN201425305Y - Saving energy environment protection flat flame burner - Google Patents
Saving energy environment protection flat flame burner Download PDFInfo
- Publication number
- CN201425305Y CN201425305Y CN2009200889833U CN200920088983U CN201425305Y CN 201425305 Y CN201425305 Y CN 201425305Y CN 2009200889833 U CN2009200889833 U CN 2009200889833U CN 200920088983 U CN200920088983 U CN 200920088983U CN 201425305 Y CN201425305 Y CN 201425305Y
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- burner
- quirk
- air
- flue
- gas nozzle
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Abstract
The utility model discloses a saving energy environment protection flat flame burner, which mainly consists of a gas nozzle (1), an air conditioning butterfly valve (2), a burner brick (4) and a box body. The burner brick and the gas nozzle are arranged in the box body, the head of the gas nozzle is coaxially arranged at the flue centre of the burner brick. An air inlet is opened at one side of the box body and the air conditioning butterfly valve is arranged on the air inlet, the centre of the burner brick is a flue (8) which is shrunken at the front part and is dilated at the rear part and has a rectangle cross section, namely a primary air channel. A group of secondary air channels (7) which have a round or long strip shaped cross section are respectively arranged at two sides of the long side of the flue with the rectangle cross section, the secondary air channel is entered the flue along the oblique direction at the position of approaching the central flue and approaching the outlet. The utility model uses the secondary blast and flue gas recycling technology to strengthen the combustion, and decreases the excess air coefficient, the aims of saving the energy, improving the heating furnace flow field and the temperature distribution, increasing the comprehensive heat efficiency and decreasing the N O x pollutants emission are achieved.
Description
Technical field
The utility model belongs to and is petrochemical industry tubular heater, Industrial Stoves, incinerator and other various equipment technical field of utilizing the fuel gas burning that heat is provided, and what relate generally to is a kind of energy saving and environment friendly flat flame burner.
Background technology
Heating furnace, kiln, incinerator or boiler in industries such as oil, petrochemical industry, metallurgy, machineries, all need to use this equipment of burner, burner is to be converted into heat energy by the chemical energy that the combustion chemistry of fuel and air is reacted fuel, in order to heating various materials, with a kind of equipment of the technical process such as intensification, drying or chemical reaction that realize material.The situation that the ubiquity part of fuel can not complete reaction in the combustion process of fuel also can produce some and (comprise NO, NO such as NOx
2Deng), CO, SO
2, SO
3And harmful pollutant such as dust, send very high jet and combustion noise, these situations reduce on the one hand heating furnace efficient, cause the loss of portion of energy, also health, atmospheric environment are produced harm on the other hand.
Therefore, the energy-saving environment-protection combustor that the research and development burning fully, pollutant discharge amount is low is the direction that make great efforts in this field always.For reaching the purpose that burner combustion is complete, pollutant discharge amount is low, adopt technological means to comprise usually:
(1) strengthen air feed, enhanced fuel and Air mixing are as adopting air stage feeding, eddy flow air-supply or fuel and air pre-mixing burning or the like, to improve the degree of perfection of burning;
(2) pre-heating fuel or air improve the burning primary condition, improve efficiency of combustion, reduce the generation and the discharging of CO, dust;
(3) reduce excess air, reduce flue gas loss, improve the heating furnace overall thermal efficiency;
(4) adopt low NOx combusting technologies such as segmentation (level) combustion technology, flue gas recirculation, reduce the NOx discharging;
And for petrochemical industry reburner top burner, because himself technology and fuel characteristic, selectable means are very limited:
(1) flame burns downwards, because buoyancy function, flame is unstable easily, therefore requires good rigidity, and the eddy flow air-supply weakens flame rigidity;
(2) little, the fuel hydrogen content height of burner rating requires enough lengths of flame again, just too enhanced fuel and Air mixing, especially premixed combustion, and flame is lacked, is caused the top temperature height, and tempering greatly, easily takes place operation easier;
(3) burner quantity is many, the adjusting difficulty is big, thereby requires to simplify the operation, and guarantees that the burner load is consistent, the interior uniformity of temperature profile of stove.
Traditional secondary air distribution circle flame burner was once arranged, because combustion intensification, fuel not only causes the inner overtemperature of burner in the inner a large amount of burnings of quirk, and its outwards heat radiation make top temperature too high, severe operational environment.And the High temperature diffusion gas shock boiler tube that circular flame forms causes boiler tube high temperature deformation, oxidation, a series of problems of pipe inner catalyst inefficacy or the like.
Summary of the invention
The purpose of this utility model is to propose a kind of energy saving and environment friendly flat flame burner.Adopt secondary blast and flue gas recirculating technique, overheavy firing reduces excess air coefficient, reaches energy savings, improves heating furnace flow field and Temperature Distribution, improves integrated heat efficiency, reduces the purpose of NOx pollutant emission.
The utility model realizes that the technical scheme that above-mentioned purpose is taked is: it is mainly by burner block, gas nozzle, casing and air conditioning butterfly valve are formed, burner block, gas nozzle is arranged in the casing, the head coaxial arrangement of gas nozzle is in the quirk center of burner block, casing one side has air intlet and this air intlet is provided with the air conditioning butterfly valve, the center of burner block is that first a contraction afterwards expanded, the cross section is rectangular quirk, i.e. wind passage, the secondary wind that in both sides, the long limit of the quirk of rectangle section one group of cross section to be set respectively be circle or strip is logical, and this secondary air channel is near the oblique quirk that enters in quirk exit, center.
The utility model is started with from burner block, gas nozzle, casing and each part of air conditioning butterfly valve of burner, critical piece to gas nozzle and these two decision burner performances of burner block, carry out technological improvement from principle, integrated use secondary blast technology, flue gas recirculating technique this two overheavy firing technology and low NOx combusting technology, make this burner all obtain good result aspect energy-conservation and the environmental protection two, and in commercial Application, obtain embodying.Compact burner block structure can make its integral body be positioned over that furnace roof is fire-resistant, heat-insulation layer is inner, makes the flame high-temperature region be in burner hearth inside, and top temperature reduces, and improves operating condition.
Because burner block is combined into one wind passage and secondary air channel, utilizes burner internal gas power mechanism, realize the adjusting of primary and secondary air automatic ratio.The burner wind supply quantity only needs to use total air channel valve to regulate, one simplifies the operation, two can regulate wind supply quantity more accurately, reduce excess air, eliminated the proportional error of the different burners that the manual adjustment primary and secondary air causes, more can guarantee the uniformity of whole each burner combustion of stove, guarantee the uniformity of Temperature Distribution on the heating furnace horizontal direction.And the gas nozzle coaxial arrangement is in the quirk center of burner block, and the two forms the main burning gallery of burner jointly.The gas-flow of nozzle head ejection different directions angle, the gas-flow that forms a kind of fan-shaped expansion distributes, and with air mixed combustion, and forms the flame form of flat under the constraint in burner block first and second air channel.The flame form of this flat has increased the Fire Radiation area of dissipation, and such as being the flame of 3: 1～4: 1 flat for length-width ratio, its girth is 1.30～1.41 times of circular flame of same sectional area.The Fire Radiation area of dissipation that increases enlarges the radiating surface to boiler tube on the one hand, and each boiler tube is heated evenly in the horizontal direction; Reduce flame temperature on the other hand, and the effect of entrainmenting of the high-speed flame jet of quirk ejection can also further reduce flame temperature, generation and the discharging of minimizing NOx with the inner flue gas of the stove introducing flame inside of relative low temperature.
It has following characteristics:
One, strengthened combustion gas and Air mixing, reduced excess air, promptly energy efficient reduces superfluous O again
2, the generation of contaminant restraining NOx and discharging;
Two, reduce flame temperature, reduced the generation and the discharging of pollutant NOx;
Three, simplify the air feed governor motion, the air quantity precise control helps the performance of burner advantage;
Four, reduce internal temperature, take the noise reduction measure, improve operating environment.
Five, compare with other this type of burner, overall structure is simple, rationally and effectively, the flame structure of formation is stable, and the efficiency of combustion height more adapts to the technological requirement of tipburn stove.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the profile of Figure 1A-A.
Fig. 3 is the partial enlarged drawing of gas nozzle head.
Fig. 4 is the upward view of Fig. 3.
Among the figure: 1, gas nozzle, 2, the air conditioning butterfly valve, 3, air intlet, 4, burner block, 5, stable flame cover, 6, jet-flow, 7, the outlet of secondary wind, 8, quirk (air channel), 9, the cotton layer of temperature resistant fiber, 10, circulating flue gas, 11, furnace roof flame retardant coating surface, 12, gas jet orifice, 13, casing.
The specific embodiment
It is fuel that the utility model is used for the combustion gas, be arranged in heating furnace top flame burns, forms flat flame burning device downwards.
It is as follows to provide embodiment of the present utility model below in conjunction with accompanying drawing:
As Fig. 1 in conjunction with shown in Figure 2, the described burner of present embodiment mainly is made up of gas nozzle 1, air conditioning butterfly valve 2, burner block 4 and casing 13, gas nozzle 1 and burner block 4 are arranged in the casing, casing is the cube closed structure, liner temperature resistant fiber cotton layer 9 is as noise reduction, thermal insulation layer, to reduce heat radiation, eliminate jet and combustion noise.Casing one side has air intlet 3 and this air intlet 3 is provided with air conditioning butterfly valve 2, realization is regulated the primary and secondary air automatic ratio, and needn't respectively primary and secondary air be regulated respectively, the control of big quantity burner is simplified, reduce excess air, improve efficiency of combustion, reduced the discharge capacity of NOx.The head coaxial arrangement of gas nozzle 1 is in quirk 8 centers of burner block 4, and the two forms the main burning gallery of burner jointly.Gas jet orifice on 1 of the gas nozzle is that step distributes, and a bowl-type stable flame cover 5 (as shown in Figure 3-4) is set, each grade arranged the gas jet orifice 12 that several different directions spray, form the steady flame mechanism of igniting mutually, bowl-type stable flame cover 5 with nozzle head, play dual steady flame effect, ignite to guarantee the flame stabilization under a large amount of wind conditions.
The center of burner block 4 be one shrink afterwards earlier expand, the cross section is rectangular quirk 8---i.e. wind passage, import is a taper contraction section, the expansion of stable back is come through a straight section, one time wind just enters through this passage, with the gas-flow mixing postignition burning of gas nozzle 1 ejection of arranging its central shaft.This quirk form can be improved the directionality of air-flow, strengthens the rigidity of flame.At the long limit of each bar of rectangle section quirk 8 side secondary air channel 7 that one group of cross section respectively is set is circle or strip, each group secondary air channel is five, near quirk exit, center, secondary air channel is with 30 ° of oblique feeding quirks 8 in angle, mix with combustion flame, strengthen on the one hand and mix, retrain flame on the one hand and disperse to both sides.It is about 30% that the primary air flow of traditional secondary air-supply technology accounts for total blast volume, mainly as heel wind, is igniting and the stable condition that provides of flame.It is about 70～80% that the primary air flow of this embodiment accounts for total blast volume, mainly plays overheavy firing and strengthen flame rigidity, to improve efficiency of combustion, reduces gas consumption.And 20～30% secondary air flow is except strengthening rear portion mixed combustion, and main is in order to strengthen flame rigidity, retention flame shape.
When present embodiment used, fuel gas entered the jet-flow 6 of gas nozzle 1 back from nozzle head gas jet orifice 12 ejection different directions angles, and the gas-flow that forms a kind of fan-shaped expansion distributes.The fuel gas needed air that burns is forced to send into or to be sucked naturally by the pressure differential inside and outside the heating furnace by air blast from air intlet 3, and air mass flow is regulated control by air conditioning butterfly valve 2.Combustion gas mixes back stable ignition burning under the protection of stable flame cover 5 with a wind in the quirk 8 of burner block 4, and sprays quirk 8 at a high speed.Secondary wind is sneaked into flame and is participated in burning in secondary wind outlet 7 ejections of quirk 8 near the exit.From quirk 8 at a high speed the combustion flame of the ejection flue gas that entrainments inside heating furnace enter flame, this part flue gas is called circulating flue gas 10, because these flue gases are that fuel gas buring generates and have been full of whole burner hearth by furnace roof flame retardant coating surface 11 and furnace wall encirclement on every side.
Fuel gas injection produces very high high and low frequency noise with burning, utilizes the cotton layer of temperature resistant fiber 9 most that can absorb wherein of burner casing 13 inner surfaces that are laid in, and reduces noise and leaks.
Claims (4)
1, a kind of energy saving and environment friendly flat flame burner, comprise gas nozzle (1), air conditioning butterfly valve (2) and casing (13), it is characterized in that: also be provided with burner block (4), this burner block (4) is positioned at casing, the head coaxial arrangement of described gas nozzle (1) is in quirk (8) center of burner block (4), the center of burner block (4) is that first a contraction afterwards expanded, the cross section is rectangular quirk (8), i.e. wind passage, in both sides, the long limit of the quirk (8) of rectangle section one group of cross section being set respectively is circle or strip secondary air channel (7), and this secondary air channel (7) is near the oblique quirk (8) that enters in center quirk (8) exit.
2, energy saving and environment friendly flat flame burner according to claim 1, it is characterized in that: the gas jet orifice of gas nozzle (1) head is that step distributes, each grade arranged the gas jet orifice (12) that several different directions spray, and a bowl-type stable flame cover (5) is set.
3, energy saving and environment friendly flat flame burner according to claim 1, it is characterized in that: described casing is the cube closed structure, the cotton layer of liner temperature resistant fiber (9).
4, energy saving and environment friendly flat flame burner according to claim 1 is characterized in that: described secondary air channel (7) near center quirk (8) exit with 30 ° of oblique feeding quirks in angle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200889833U CN201425305Y (en) | 2009-03-23 | 2009-03-23 | Saving energy environment protection flat flame burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200889833U CN201425305Y (en) | 2009-03-23 | 2009-03-23 | Saving energy environment protection flat flame burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201425305Y true CN201425305Y (en) | 2010-03-17 |
Family
ID=42024756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200889833U Expired - Fee Related CN201425305Y (en) | 2009-03-23 | 2009-03-23 | Saving energy environment protection flat flame burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201425305Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353080A (en) * | 2011-09-06 | 2012-02-15 | 蚌埠市添利厨房设备有限公司 | Low-noise gas hearth |
| CN103398194A (en) * | 2013-08-02 | 2013-11-20 | 永康市华港厨具配件有限公司 | Four-speed power air and gas synchronous control valve |
| CN109737408A (en) * | 2019-03-10 | 2019-05-10 | 岳阳钟鼎热工电磁科技有限公司 | The big load pyrolysis furnace gas burner of flat fan flame ultra-low NOx emission |
| CN110542740A (en) * | 2019-09-25 | 2019-12-06 | 安徽工业大学 | Opposed flame test bed capable of accurately adjusting burner nozzle |
| CN110864288A (en) * | 2019-11-22 | 2020-03-06 | 杭州中景科技有限公司 | Low NOx wide flat flame burner |
| CN111649323A (en) * | 2020-06-16 | 2020-09-11 | 江苏泷涛环境技术有限公司 | Low-nitrogen type flat-flame combustor and application thereof |
-
2009
- 2009-03-23 CN CN2009200889833U patent/CN201425305Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353080A (en) * | 2011-09-06 | 2012-02-15 | 蚌埠市添利厨房设备有限公司 | Low-noise gas hearth |
| CN103398194A (en) * | 2013-08-02 | 2013-11-20 | 永康市华港厨具配件有限公司 | Four-speed power air and gas synchronous control valve |
| CN103398194B (en) * | 2013-08-02 | 2015-08-05 | 永康市华港厨具配件有限公司 | Four sections of power general mood synchronous control valves |
| CN109737408A (en) * | 2019-03-10 | 2019-05-10 | 岳阳钟鼎热工电磁科技有限公司 | The big load pyrolysis furnace gas burner of flat fan flame ultra-low NOx emission |
| CN109737408B (en) * | 2019-03-10 | 2023-11-24 | 岳阳钟鼎热工电磁科技有限公司 | Gas burner for flat fan-shaped flame ultralow NOx emission high-load cracking furnace |
| CN110542740A (en) * | 2019-09-25 | 2019-12-06 | 安徽工业大学 | Opposed flame test bed capable of accurately adjusting burner nozzle |
| CN110864288A (en) * | 2019-11-22 | 2020-03-06 | 杭州中景科技有限公司 | Low NOx wide flat flame burner |
| CN111649323A (en) * | 2020-06-16 | 2020-09-11 | 江苏泷涛环境技术有限公司 | Low-nitrogen type flat-flame combustor and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100317 Termination date: 20110323 |