CN101153711A - Partial pre-mix flare burner and method - Google Patents
Partial pre-mix flare burner and method Download PDFInfo
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- CN101153711A CN101153711A CNA2007101531474A CN200710153147A CN101153711A CN 101153711 A CN101153711 A CN 101153711A CN A2007101531474 A CNA2007101531474 A CN A2007101531474A CN 200710153147 A CN200710153147 A CN 200710153147A CN 101153711 A CN101153711 A CN 101153711A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/08—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases using flares, e.g. in stacks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Gas Burners (AREA)
- Incineration Of Waste (AREA)
Abstract
A flare burner that is particularly suitable for use in connection with ground flares and other types of flares in which it is important to control the height of the flame envelope created by the burner is provided. The flare burner includes a pre-mix zone including a pre-mix chamber into which air is entrained. A uniform mixture of fuel and air is formed in the pre-mix zone and caused to exit an air/fuel outlet in the top of the pre-mix chamber. In one embodiment, the amount of air in the fuel/air mixture that exits the air/fuel outlet is in excess of the stoichiometric amount of air required to support combustion of the fuel in the mixture. Fuel is injected around the perimeter of the air/fuel outlet, combustion is initiated and a flame envelope is created. By injecting a mixture of fuel and air that includes excess air into the center of the flame envelope, combustion of the central portion of the flame envelope is accelerated which allows more fuel to be flared with a given flame envelope height. The invention also includes a ground flare and a method of flaring fuel with a flare burner.
Description
Technical field
The present invention relates to be used for the flare apparatus and the method for flame combustion combustible exhaust gas and shunting fuel feedstocks.In one embodiment, the present invention relates to ground flare burner, ground flare and correlation technique.
Background technology
Flare apparatus and method are used to burn and dispose the combustible exhaust gas in the application scenario miscellaneous and shunt fuel feedstocks.For example, torch is usually placed in oil production equipment, refining equipment, the processing factory etc., so that the fuel feedstocks stream of disposing the combustible exhaust gas of discharging and/or shunting in ventilation, shutdown, non-normal working, emergency.Flame combustion combustible exhaust gas under the situation that does not produce cigarette and shunting fuel feedstocks (below be called " fuel ") normally desirable or enforceable.Leave flame by guaranteeing that oxidation cigarette ash does not form abundant amount, can realize the smokeless flames burning.For reaching this point, the oxygen of q.s and fuel mix are to prevent that mixture is rich in fuel very much and the situation that causes losing efficacy.
In many application scenarios, the length of the flame envelope (flame envelope) that torch produces is also very important.The example of torch of wishing to have the type of short relatively flame envelope comprises for example high pressure flare on hole formula sealing torch, ground flare and the floating winning apparatus of torch attractive in appearance.In such torch, need prevent that usually flame from being seen by community on every side.On the other hand, this torch need have the ability that burns large volume fuel at any given time.Along with being increased by the volume of fuel of flame combustion, the length of flame envelope trends towards increasing.
Ground flare also is known as the multiple spot torch, is generally used for such application scenario, and wherein, the amount of fuel that will flame combustion in preset time can change to relative large volume (for example, 1,000,000 pound per hour or more than) from relative small size.Finish in smokeless mode for the variation and the permission fuel that are adapted to volume of fuel, multistage burner is used.To flowing by the control system guiding of every grade of burner, described control system is in response to will be by the fuel pressure of flame combustion and volume.In this way, enough pressure can be supplied to each burner in operation, carried secretly with the air of guaranteeing Sq, and abundant mixing air and fuel, to guarantee smokeless combustion in the scope of using.
The ground flare system is dispersed in the large tracts of land usually, and for example three acres, and centered on by Dazhalan or enclosure wall.Enclosure wall is used to stop the human or animal near flame region, and makes heat radiation, observability and the noise minimization of peripheral region.Enclosure wall is made by metal or other hot refractive material usually, and has 20 to 60 feet high.As a result, enclosure wall set up and safeguard may be very expensive.
The spacing of the burner in the ground flare system and the flow rate of fuel are also very important.Burner needs adequate closure each other, lights to prevent to intersect, and needs enough arrange compactly, with the overall dimensions of the enclosure wall that reduces system and encirclement.For the reason on the cost, the ignition device of minimum number is desirable.Typical equipment comprises the single ignition device that is positioned at every row's burner end.On the other hand, burner can not be too near to each other, to such an extent as to limit air flow and hinder smokeless combustion, or cause flame to be agglomerated into fireball and exceed the height of enclosure wall.In addition, the flow rate of fuel must be controlled, thereby the height of each flame is no more than the height of enclosure wall.
One type the ground flare burner of Shi Yonging comprises a plurality of diffusion jet flows before this, is used to distribute fuel and sucks the required air of burning.Jet flow sprays in the atmosphere with enough speed, so that combustion air is sucked jet flow.After fire fuel, above fuel draining point, laterally carried secretly from the air of surrounding environment.Along with subduing of air velocity, the buoyancy of hot gas constitutes the whole mixing condition of fuel and air, and this makes the burning of residual fuel be accomplished.
Only utilize the diffusion jet flow to distribute fuel and laterally carry the intensive central core that comprises fuel in the whole flame envelope that burns required air and produce secretly.This fuel central core keeps not being touched, and takes fire until the outside of flame envelope.Along with the external firing of flame envelope, air can enter the localized area, inside of flame envelope, to finish oxidizing process.Regrettably, because the interaction of each fuel jet, the fuel densification core that is formed on flame envelope center makes, the length that does not cause the flame envelope increase and/or the situation of smoldering under, be difficult to increase the flow rate of fuel to carry big capacity.The length of increase flame envelope need be surrounded the enclosure wall of ground flare usually and be increased the remarkable cost that increases enclosure wall of this meeting.
The present invention will provide a kind of mix flare burner, and it can be used for the torch of ground flare, high pressure flare and other type.For example, mix flare burner of the present invention can overcome the shortcoming of previously used ground flare burner.The present invention also will provide ground flare equipment and in the mix flare burner process for burning fuel.
Summary of the invention
According to the present invention, a kind of mix flare burner is provided, it can be with the fuel of short relatively flame envelope burning large volume.The length of flame envelope reduces to cause many advantages.For example, the height that surrounds the enclosure wall of ground flare can reduce, and perhaps can increase with existing enclosure wall height can be by the volume of fuel of flame combustion.
Mix flare burner of the present invention comprises the premixed district, and it comprises premixing cavity, is used for fuel is injected the auxiliary fuel import and the main fuel outlet in premixed district.Preferably, mix flare burner of the present invention also comprises the fuel feed line, and it is communicated with auxiliary fuel import and main fuel outlet fluid.
Premixing cavity comprises top, bottom and the top is connected to the sidewall of bottom.Sidewall comprises inner surface and outer surface.Air intlet is located in one of bottom and sidewall, and the air/fuel outlet is arranged in the top.
The auxiliary fuel import is positioned at such position with respect to the premixed district, promptly the fuel of injecting the premixed district from the auxiliary fuel import is carried air secretly and is entered the premixed district, thereby fuel and air mixture is formed in the premixed district and is caused leaving the air/fuel outlet of premixing cavity.
The main fuel outlet is positioned at such position with respect to the premixing cavity top, thereby makes fuel to spray into from the main fuel outlet around the air/fuel outlet periphery of premixing cavity.In one embodiment, main fuel outlet outwards separates from premixing cavity, to provide the space between the outer surface of premixing cavity sidewall and main fuel outlet.As hereinafter describing in detail, this space allows the position of ozone below burner to be entrained to and to be arranged on the inner adjacent point of fuel port of main fuel outlet.This some application scenarios that are blended in of carrying the enhancing of generation secretly are important, for example when weighing hydrocarbon or unsaturated fuel by flame combustion.
The fuel feed line conducts to auxiliary fuel gas feed and main fuel gas vent with fuel.Based on application, fuel can be supplied to auxiliary fuel import and main fuel outlet with identical pressure or different pressures.
Mix flare burner of the present invention can also comprise the fuel dividing plate, and its periphery around premixing cavity is arranged.The fuel dividing plate comprises fuel inlet and is communicated with main fuel outlet fluid.In some embodiments, the fuel dividing plate also is communicated with the auxiliary fuel inlet fluid.In order to provide previously described air to carry the space secretly, the fuel dividing plate can outwards separate from the outer surface of premixing cavity sidewall.
Based on the specific structure of mix flare burner of the present invention, the premixed district can include only premixing cavity, perhaps can comprise below premixing cavity and the actual premixing cavity and/or top zone.For example, when the air intlet of premixing cavity was positioned at premixing cavity bottom and auxiliary fuel import and is separated by below air intlet, fuel and air mixed below air intlet and premixing cavity.In addition, lighted and burning before the combustion zone, fuel and air continue to mix usually above the air/fuel outlet that is arranged in the premixing cavity top.
Premixing cavity and fuel dividing plate can form shape and size miscellaneous.In one embodiment, premixing cavity and fuel dividing plate have circular cross section.In another embodiment, premixing cavity and fuel dividing plate have rectangular cross section.
By the auxiliary fuel import fuel to be sprayed into the air that the premixed district produced and carry secretly in order to strengthen, the premixing cavity inner surface can comprise surface, one section section Anda.The auxiliary fuel import is positioned at such position with respect to premixing cavity, thereby makes fuel to be ejected into surface, section Anda from the auxiliary fuel import.Fuel trends towards adhering to and accompanying or follow the path on surface, Yu Ke Anda, and forms the film of relative thin, and it causes that more air are entered premixing cavity by carrying secretly and realize mixing of better air and fuel in premixing cavity.
The length of premixing cavity can be at about 0.25: 1 to about 4: 1 scope with the ratio of hydraulic pressure internal diameter.The ratio of the length of its premixing cavity and hydraulic pressure internal diameter greater than 4: 1 unit on function more, but limited on cost.In one embodiment, the ratio of the length of premixing cavity and hydraulic pressure internal diameter at about 1: 1 to about 3: 1 scope.In another embodiment, the ratio of the length of premixing cavity and hydraulic pressure internal diameter be about 1: 1 or below.The premixing cavity of short relatively length may be useful at ground flare and other torch application scenario, burner length (or height) important use occasion wherein for example, and perhaps wherein high response fuel may cause internally fired application scenario.In addition, in some structures, condition (for example, a plurality of little jet flows that fuel sprays from the auxiliary fuel import; High pressure) allow to realize uniform air and fuel mixture, even premixing cavity has the ratio of very little length and hydraulic pressure internal diameter.
Ground flare of the present invention comprises a plurality of mix flare burners, centers on the fence of mix flare burner extension or the fuel supply lines that other enclosure wall extends and be used to supply fuel to mix flare burner.Wherein, at least one mix flare burner is previously described mix flare burner of the present invention.
The present invention also comprises the method for utilizing mix flare burner flame combustion fuel, wherein, will is ejected in the combustion zone by the fuel outlet of the fuel of flame combustion by burner and be lighted, to produce flame envelope and combustion fuel.The method according to this invention, a part of fuel are introduced into the premixed district of mix flare burner by this way, air can be carried secretly to enter the premixed district and produce air and fuel mixture in the premixed district.Air and fuel mixture are ejected into the middle body of flame envelope from the premixed district.
Carry secretly the air capacity that enters the premixed district and spray into the middle body of flame envelope be preferably fuel that support to introduce the premixed district the needed air stoichiometry amount of burning (stoichiometric amount) about at least 15%.In some application scenarios, spraying the middle body that " being rich in fuel " fuel and air mixture (that is, the air stoichiometry amount of mixture is less than 100% of the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district) enters the flame envelope suits.In most of application scenarios, yet, it is desirable spraying the middle body that " barren " fuel and air mixture (that is, the air stoichiometry amount of mixture is greater than 100% of the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district) enters the flame envelope.In most of application scenarios, the air capacity of carrying the middle body that enters the premixed district and spray into the flame envelope secretly the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district about 125% to about 300% scope.
The fuel quantity of introducing the premixed district preferably will by the total amount of fuel of mix flare burner flame combustion about 5% to about 50% scope.Because the method according to this invention pre-mixed fuel stream sprays in the middle body of flame envelope, so the flame envelope is included in its central burner and in the part of its outer surface burning.The anchor ring flame that is caused produces additional mixing and turbulent flow, and this causes more uniform and flame envelope burning faster.As a result, the height of flame envelope can reduce, and perhaps for given flame envelope, can be increased by the volume of fuel of flame combustion.Mix flare burner of the present invention and method also can obtain other a bit.
Therefore overall purpose of the present invention provides a kind of mix flare burner and correlation technique, and wherein the fuel of large volume can burn in short and uniform relatively flame envelope.
Read the preferred implementation that describes below in conjunction with the accompanying drawings, those skilled in the art can more clearly understand object of the present invention, feature and advantage.
Description of drawings
Fig. 1 is the front view of prior art ground flare burner.
Fig. 2 is the vertical view that is shown in the mix flare burner of Fig. 1.
Fig. 3 is the general illustration that is shown in the flame envelope that the prior art mix flare burner of Fig. 1 and 2 produces.
Fig. 4 is the perspective view of ground flare burner first embodiment of the present invention.
Fig. 5 is the cutaway view that the line 5-5 in Fig. 4 is done.
Fig. 6 is the vertical view that is shown in the Figure 4 and 5 burner.
Fig. 7 is the cutaway view that the line 7-7 in Fig. 6 is done, and shows optional riser or terminal extension.
Fig. 8 shows the substituting embodiment that annular fuel sprays into body, and it can be used for first, second and the 4th embodiment of mix flare burner of the present invention.
Fig. 9 is the perspective view of second embodiment of mix flare burner of the present invention.
Figure 10 is the cutaway view that the line 10-10 in Figure 11 is done.
Figure 10 A shows the substituting embodiment of the annular distributing manifold that is used for second embodiment.
Figure 11 is the vertical view that is shown in the mix flare burner of Fig. 9 and 10.
Figure 12 is the cutaway view that the line 12-12 in Figure 10 is done.
Figure 13 is the perspective view of the 3rd embodiment of mix flare burner of the present invention.
Figure 14 is the cutaway view that the line 14-14 in Figure 13 is done.
Figure 15 is the vertical view that is shown in the mix flare burner of Figure 13 and 14.
Figure 16 is the cutaway view that the line 16-16 in Figure 13 is done, and shows optional riser or terminal extension.
Figure 17 is the cutaway view that the line 17-17 in Figure 15 is done.
Figure 17 A shows the substituting embodiment of the tubular distributing manifold that is used for the 3rd embodiment.
Figure 18 is the cutaway view that the line 18-18 in Figure 14 is done.
Figure 19 is the perspective view of the 4th embodiment of mix flare burner of the present invention.
Figure 20 is the cutaway view that the line 20-20 in Figure 19 is done.
Figure 21 is the cutaway view that the line 21-21 in Figure 22 is done, and shows the selectable unit (SU) of burner.
Figure 22 is the vertical view that is shown in the burner of Figure 19-21.
Figure 23 shows the substituting embodiment of the auxiliary fuel import in the burner that is shown in Figure 19-22.
Figure 24 is the general illustration of the flame envelope that produces of each embodiment of mix flare burner of the present invention.
Figure 25 be mix flare burner of the present invention each embodiment can transformable perspective view.
Figure 26 is the cutaway view that the line 26-26 in Figure 25 is done.
Figure 27 is the vertical view that is shown in the burner of Figure 25 and 26.
Figure 28 is that each embodiment of mix flare burner of the present invention is transformed the general illustration of the flame envelope of generation afterwards in the mode that is shown among Figure 25-27.
Figure 29 is the schematic diagram of an embodiment of ground flare of the present invention.
The specific embodiment
Referring now to accompanying drawing,, Fig. 1-3 particularly, a kind of prior art ground flare burner is illustrated, and is endowed Reference numeral 10 generally.Prior art burner 10 comprises burner foundry goods 12, and it is connected on the fuel riser 14.Burner foundry goods 12 comprises middle body 15 and round a plurality of fuel outlet arms 16 of middle body and riser 14 top arranged concentric.Each fuel outlet arm 16 comprises one or more fuel port 18.Fuel directly is supplied to fuel port 18, that is to say, fuel is not at first to close with air pre-mixing.As a result, the fuel jet of port one 8 generations is diffused fuel jet flows.
Fig. 3 has described the flame envelope 20 that burner 10 produces substantially.Fuel (being depicted as black arrow substantially) is at full speed injected combustion zone 22 by port one 8, so that air is sucked jet flow.Laterally carry secretly the top by from fuel draining point from surrounding environment.Along with air velocity reduces, the buoyancy of hot gas constitutes the whole mixing condition of fuel and air, and this makes the burning of residual fuel be accomplished.Whole flame envelope 20 has length 23 and comprises intensive fuel central core 24.Fuel central core 24 keeps not oxidized, takes fire until the outside 26 of flame 22.Although the middle body of flame envelope can comprise some air pockets 28, the air capacity in the air pocket is not enough to support the even burning of fuel central core 24.Intensive fuel central core 24 keeps not being touched haply, fully consumes and allows the air of q.s to enter the inside restriceted envelope of flame envelope and allow to finish oxidizing process until fuel outside 26.Regrettably, the fuel densification core 24 that is positioned at flame envelope 20 centers make its do not cause that the length of flame increases and/or the situation of smoldering under be difficult to increase the flow rate of fuel to support bigger flame.
Mix flare burner of the present invention
Referring now to Fig. 4-8,, an embodiment of mix flare burner of the present invention is illustrated, and is endowed Reference numeral 30 generally.Mix flare burner 30 comprises the premixed district 31 with premixing cavity 32, and the auxiliary fuel import 34 that is used for fuel is injected the premixed district, main fuel outlet 36 and fuel feed line 38.The term that uses in specification and claims " fuel " refers to waste gas, shunting fuel feedstocks and/or other gas or the liquid that will utilize mix flare burner of the present invention, flare apparatus (for example, ground flare equipment of the present invention) and method flame combustion.For example, when the local pressure of heavy unsaturation or saturated fuel is positioned at or is lower than saturation conditions, can produce liquid.As being shown in Fig. 4, ignition device 40 can (and burner 130,230 and 330 be associated, as described later) initially to light the fuel and air mixture by the burner discharging with burner 30.
In the embodiment that is shown in Fig. 4-8, the premixing cavity 32 of mix flare burner 30 provides the major part in premixed district 31.Fuel and air mixture (preferably uniform basically mixture) can be formed at the premixed district 31 that comprises premixing cavity 32.As described later, being formed in the premixed district 31 mixture and both can being rich in fuel, also can be that fuel is barren.Premixing cavity 32 comprises circular cross section and has cylinder form.Premixing cavity comprise top 42, bottom 44, with the top be connected to the bottom sidewall 46, be arranged in the air intlet 48 of bottom 44 and be arranged in the air/fuel outlet 50 at top 42.As shown in the figure, top 42 and bottom 44 are opened wide, thereby form air intlet 48 and air/fuel outlet 50.As a result, air intlet 48 and air/fuel outlet 50 has circular cross section respectively.Outwards open the bottom 52 of premixing cavity 32, to give to hypomere bell (having abundant fillet), to improve the flow rate of introducing fuel and air.Perhaps, the bottom 52 of premixing cavity 32 is not outwards to open, that is, whole premixing cavity has uniform cylinder form.Be shown in Fig. 5 as the best, premixed district 31 comprises the premixed space 31 (a) of premixing cavity 32 following (between the bottoms 44 and air intlet 48 of auxiliary fuel import 34 and premixing cavity), the inside 31 (b) of premixing cavity and be positioned at premixing cavity top 42 and the premixed space 31 (c) of air/fuel outlet 50 next-door neighbour tops.In the embodiment that is shown in Fig. 4-9, the preliminary mixing of premixed air and fuel betides in the inside 31 (b) and premixed space 31 (c) of premixing cavity 32.
The ratio of the length of premixing cavity 32 (or height) and hydraulic pressure internal diameter about 0.25: 1 to about 4: 1 scope, preferably approximately 1: 1 to about 3: 1.The length of premixing cavity 32 (or height) and the actual ratio of hydraulic pressure internal diameter partly depend on by the type of the fuel of flame combustion with can be used for the pressure carrying secretly and mix.Generally speaking, longer premixing cavity can cause fuel and air to mix better therein; Yet this advantage will average out with cost and other factors.In a preferred embodiment, the length of premixing cavity 32 (or height) is about 1.5: 1 with the ratio of hydraulic pressure internal diameter.The term that uses in specification and claims " hydraulic pressure internal diameter " refers to premixing cavity inner area quadruplication (4) again divided by the girth of premixing cavity inside surface of side wall.
Annular fuel dividing plate 60 is arranged around the periphery of premixing cavity 32.Fuel dividing plate 60 is connecting fuel feed line 38 and is exporting 36 fluids with main fuel and is being communicated with.Fuel dividing plate 60 comprises unlimited top 62, bottom 64 and the top is connected to the lateral wall 66 and the madial wall 67 of bottom.In the embodiment that is shown in Fig. 4-8, the madial wall 67 of dividing plate 60 also is the sidewall 46 of premixing cavity 32.Lip ring 68 attachings are in the bottom 64 of fuel dividing plate 60, and extend around the sidewall 46 of premixing cavity 32, to guarantee the globality of dividing plate.In substituting embodiment, as be illustrated in Figure 25-28 and as explained below, fuel dividing plate 60 can outwards separate from the sidewall 46 of premixing cavity 32, so that provide annular space between the outer surface of sidewall 46 and main fuel outlet 36.Annular space allows the position of air below burner to be entrained to and to be arranged on the adjacent point of fuel port 74 that main fuel exports 36 inside.In this embodiment, the madial wall 67 of dividing plate 60 is separated by with the sidewall 46 of premixing cavity 32.
As be shown in Fig. 7, if necessary, diffused fuel port 74 can spray into body 70 be separated by the gas riser or the terminal extension 76 of a plurality of corresponding weak points with fuel.Port 74 sprays into body 70 with fuel can cause in some application scenarios better laterally entrapped air at interval by riser 76.Riser also allows port is configured, and causes where necessary that the fuel flow behavior is mechanically changed.
The substituting embodiment that annular fuel sprays into body 70 is shown in Fig. 8.In this embodiment, a plurality of fuel port 74 in a planned way spray into outside, inside and the middle part separation of body 70 around fuel.Fuel port 74 sprays into body 70 around fuel by this way to be separated and allows and will have the Road narrows of carrying secretly between the jet flow that be used, so that mix better and carry secretly.It will be understood by those skilled in the art that and spray into the port 74 that body 70 can comprise repetition of all kinds.Employed specific port arrangement depends on various factors, comprises by type of the fuel of flame combustion (comprising molecular weight, calorific capacity, stoichiometry and gas flow temperature) and relevant available pressure.
Fuel feed line 38 exports 36 fluids with auxiliary fuel import 34 and main fuel and is communicated with, and is used for therefrom conducting fuel.Fuel feed line 38 comprises main split 80, and it has first end 82 and second end 84.First end 82 comprises flange 86, is used for that first end is connected to fuels sources and (it will be understood by those skilled in the art that this type of connects common welding by the mechanical fastener that pipeline section is directly welded together or other does not need packing ring with some and forms; For example, the packing ring between the respective flanges can not bear the heat radiation in the surrounding environment basically).Second end 84 is connecting the respective inlets 88 in the lateral wall 66 of fuel dividing plate 60.Fuel feed line 38 also comprises secondary branch 90, and it is connected to auxiliary fuel import 34 with the fuel feed line.Secondary branch 90 comprises first end 92 and second end 94.First end 92 is connecting the main split 90 of feed line 38.Joint 96 is connected to auxiliary fuel import 34 with second end 94.Perhaps, fuel feed line that is separated from each other or riser can guide to fuel auxiliary fuel import 34 and main fuel 36 (being different from single integral duct or riser 38) of outlet.Conduit that is separated from each other or riser extend from the common fuel house steward usually.
Referring to Fig. 5, the operation of mix flare burner 30 will be described.A part will be conducted to fuel dividing plate 60 and main fuel outlet 36 by the main split 80 of the fuel of flame combustion (being depicted as black arrow substantially) by fuel feed line 38.Some will be conducted to auxiliary fuel import 34 from the secondary branch 90 by fuel feed line 38 by the fuel of flame combustion.Fuel sprays into premixed district 31 and premixing cavity 32 from auxiliary fuel import 34 and air can be carried secretly and enter premixed space 31 (a), and enter premixing cavity inside 31 (b) by air intlet 48, thereby fuel and air mixture (preferably uniform basically mixture) is formed in the premixed district and is caused leaving air/fuel outlet 50.Fuel and air continue to be mixed in short distance on the air/fuel outlet 50.To be sprayed into ringwise from main fuel outlet 36 by the periphery 69 of the residual fuel of flame combustion around the air/fuel of premixing cavity outlet 50, and thereby around the air/fuel mixture of the air/fuel outlet of leaving premixing cavity.Burner is preferably designed in the following manner and is operated, and promptly carries the air capacity that enters the premixed district 31 that comprises premixing cavity 32 secretly and surpasses the required air stoichiometry amount of fuel that burning sprays into the premixed district.Excessive air is applied to the center of flame envelope, so that at internal-combustion fuel.Yet, as explaining in detail hereinafter, in some application scenarios, burner is designed in the following manner and operates, and promptly carries the air capacity that enters the premixed district 31 that comprises premixing cavity 32 secretly and is equal to or less than the required air stoichiometry amount (although still flammable) of fuel that burning sprays into the premixed district.The middle body that the fuel and air mixture that will " be rich in fuel " (that is, the air stoichiometry amount of mixture is needed less than the burning of the fuel of supporting to introduce the premixed district) sprays into the flame envelope is desirable in some application scenarios.
Figure 24 has described mix flare burner 30 (and burner 130,230 and 330, the flame envelope 100 of Chan Shenging as described later) haply.As shown in the figure, excess air sprays into the core 102 of flame envelope 100 from premixing cavity 32.Excessive air is expressed as air pocket 103 in Figure 24, with the fuel mix of the core 102 of flame envelope 100, in fact to form two flammable original areas, promptly distinguish 104 (a) and 104 (b).The fuel of flame kernel part 102 otherwise can not run into oxidant (air), takes fire until flame envelope outside 105, touches air with the fuel that allows succeeding layer.Supply air to the core 102 of flame envelope 100 not only produces flammable mesozone, but also because expand under the calory burning effect in the internal-combustion district, therefore flame can be disconnected.Can increase significant turbulent flow at the different combustion flame of the inner interpolation of big main flame, to strengthen the central core of mixing and disconnecting fuel.As a result, more uniform and flame envelope burning faster will take place, and this has shortened the entire length of flame, or the significantly more fuel of permission will be by flame combustion under the identical length of flame.Along with the amount of the excess air of the core 102 that is applied to flame envelope 100 increases, the length of flame reduces, or can be increased by the volume of fuel of flame combustion under given flame height.For example, as be shown in Figure 24, the length 106 of flame envelope 100 is significantly less than the length 23 of prior art flame envelope 20 shown in Figure 3 under the fuel of same amount.
Referring now to Fig. 9-12,, second embodiment of mix flare burner of the present invention is illustrated, and is endowed Reference numeral 130 generally.Be similar to other embodiment of mix flare burner of the present invention, mix flare burner 130 comprises the premixed district 131 with premixing cavity 132, and the auxiliary fuel import 134 that is used for fuel is injected the premixed district, main fuel outlet 136 and fuel feed line 138.Ignition device (as being shown in Fig. 4) can be associated with burner 130, initially to light the fuel and air mixture by the burner discharging.
In the embodiment that is shown in Fig. 9-12, the premixing cavity 132 of mix flare burner 130 provides the major part in premixed district 131.Fuel and air mixture (preferably uniform basically mixture) can be formed in the premixed district 131 that comprises premixing cavity 132.As described later, being formed in the premixed district 131 mixture and both can being rich in fuel, also can be that fuel is barren.Premixing cavity 132 comprises circular cross section and has cylinder form.It comprises top 142, bottom 144, with the top be connected to the bottom sidewall 146, be arranged in the air intlet 148 in the bottom 144 and be arranged in air/fuel outlet 150 in the top.As shown in the figure, top 142 and bottom 144 are opened wide, thereby form air intlet 148 and air/fuel outlet 150.As a result, air intlet 148 and air/fuel outlet 150 has circular cross section respectively.
Be shown in Figure 10 as the best, premixed district 131 comprises the premixed space 131 (a) of premixing cavity 132 following (between the bottoms 144 and air intlet 148 of auxiliary fuel import 134 and premixing cavity), the inside 131 (b) of premixing cavity and be positioned at premixing cavity top 142 and the premixed space 131 (c) of air/fuel outlet 150 next-door neighbour tops.In the embodiment that is shown in Fig. 9-12, the preliminary mixing of air and fuel betides in the inside 131 (b) of premixing cavity 132 and in premixed space 131 (c).The sidewall 146 of premixing cavity 132 comprises inner surface 154 and outer surface 156.The hypomere 158 of sidewall 146 outwards opens with the form of curve, to give annular section Anda (Coanda) surface 160 to inside surface of side wall 154.
The ratio of the length of premixing cavity 132 (or height) and hydraulic pressure internal diameter is in about 0.25: 1 to 4: 1 scope, preferably approximately 1: 1 to about 3: 1.The length of premixing cavity 132 (or height) and the actual ratio of hydraulic pressure internal diameter partly depend on by the type of the fuel of flame combustion with can be used for the pressure carrying secretly and mix.Generally speaking, longer premixing cavity can cause fuel and air to mix better therein; Yet this advantage will average out with cost and other factors.In a preferred embodiment, the length of premixing cavity 132 (or height) is about 1.5: 1 with the ratio of hydraulic pressure internal diameter.
Auxiliary fuel import 134 is positioned at such position with respect to premixed district 131, promptly the fuel of injecting the premixed district from the auxiliary fuel import is carried air secretly and is entered premixed space 131 (a), and enter premixing cavity by air intlet 148, thereby fuel and air mixture, preferred uniform mixture basically is formed in the premixed district and the air/fuel that caused leaving in the premixing cavity top 142 exports 150.Fuel and air continue to be mixed in the premixed space 131 (c).Burning can not appear in fuel and air mixture usually, leaves air/fuel outlet 150 until mixture and roughly breaks away from distance apart from one section of the air/fuel outlet.The speed of discharging from the air/fuel outlet along with the air capacity in the mixture and mixture with the distance of air/fuel outlet 150 generation burning apart and changing.In some cases, because short classification sequential, burning may appear at premixed district (for example, with short duration, the situation of utmost point low pressure).As being shown in Figure 10 and 12, auxiliary fuel gas feed 134 comprises annular distributing manifold 164, has a plurality of fuel port 166 in it.Fuel port 166 is circular basically opening.As being shown in Figure 10, annular distributing manifold 164 is positioned at such position with respect to premixing cavity 132, can make fuel be injected into ringwise on the surface, annular section Anda 160 from manifold 164.
Figure 10 A shows the substituting embodiment of annular distributing manifold 164.In this embodiment, fuel port 166 is elongated open or groove.The fluting shape of fuel port 166 causes that fuel is ejected on the surface, annular section Anda 160 with sheet form, and this helps carrying secretly and immixture of enhancing section Anda surface generation, and allows fuel to spray from manifold 164 with two-forty.If necessary, groove 166 can be connected, to form continuous elongated open or groove in distributing manifold 164.
Annular fuel dividing plate 170 is arranged around the periphery of premixing cavity 132.Fuel dividing plate 170 is connecting fuel feed line 138 and is being communicated with main fuel outlet 136 and auxiliary fuel import 134 fluids.Fuel dividing plate 170 comprises unlimited top 172, bottom 174 and with the top be connected to the bottom lateral wall 176 and madial wall 177.In the embodiment that is shown in Fig. 9-12, madial wall 177 also is the sidewall 146 of premixing cavity.Lip ring 178 attachings are in the bottom 174 of fuel dividing plate 170, and extend around the sidewall 146 of premixing cavity 132, to guarantee the globality of dividing plate.In substituting embodiment, as be illustrated in Figure 25-28 and as explained below, fuel dividing plate 170 can outwards separate from the sidewall 146 of premixing cavity 132, so that provide annular space between the outer surface of sidewall 146 and main fuel outlet 136.Annular space allows the position of air below burner to be entrained to and to be arranged on the adjacent point of fuel port 192 that main fuel exports 136 inside.In this embodiment, the madial wall 177 of dividing plate 170 is separated by with the sidewall 146 of premixing cavity 132.
Auxiliary fuel feed line 180 (a), 180 (b), 180 (c) and 180 (d) extend to auxiliary fuel import 134 (promptly from annular fuel dividing plate 170, extend to annular distributing manifold 164), to transmit fuel to import 134 (that is, manifold 164) from fuel dividing plate 170.Each auxiliary fuel feed line 180 (a), 180 (b), 180 (c) and 180 (d) comprise attaching in first end 182 of dividing plate 170 and attaching in second end 184 of import 134 (that is, manifold 164).
As be shown in Fig. 7, if necessary, diffused fuel port one 92 can spray into body 188 be separated by the gas riser or the terminal extension 196 of a plurality of corresponding weak points with fuel.Port one 92 sprays into body 188 with fuel can cause in some application scenarios better laterally entrapped air by riser 196 separations.Riser also allows port is configured, and causes where necessary that the fuel flow behavior is mechanically changed.The substituting embodiment that the fuel that is shown in Fig. 8 sprays into body 70 can also be used to replace annular fuel and spray into body 188.It will be understood by those skilled in the art that and spray into the port one 92 that body 188 can comprise repetition of all kinds.Employed specific port arrangement depends on various factors, comprises by type of the fuel of flame combustion (comprising molecular weight, calorific capacity, stoichiometry and gas flow temperature) and relevant available pressure.
Referring to Figure 10, the operation of burner 130 will be described.To be conducted to annular gas dividing plate 170 by fuel feed line 138 by the fuel of flame combustion (being depicted as black arrow substantially).Part fuel conducts to main fuel outlet 136 (that is, annular sprays into body 188) by fuel dividing plate 170.Remaining a part of fuel conducts to auxiliary fuel import 134 (that is annular distributing manifold 164) by dividing plate 170 by fuel feed line 180 (a), 180 (b), 180 (c) and 180 (d).Fuel is injected to by premixed space 131 (a) from the fuel port 166 of annular distributing manifold 164 on the surface, annular section Anda 160 on the inner surface 154 of premixing cavity 132.Fuel sprays into premixed district 131 and premixing cavity 132 from gas ports 166, air can be carried secretly and enter premixed space 131 (a), and enter premixing cavity inside 131 (b) by air intlet 148, thereby fuel and air mixture (preferably uniform basically mixture) is formed in the premixed district and is caused leaving air/fuel outlet 150.Fuel and air continue to be mixed in short distance on the air/fuel outlet 150.Fuel from fuel port 166 be ejected into can cause on the surface, section Anda 160 fuel deposition in and accompany or follow the path on surface, Yu Ke Anda, and form the film of relative thin, this causes air more efficiently to be carried secretly and the mixing of air and fuel.To be sprayed into from main fuel outlet 136 (annular sprays into body 188) by the periphery 186 of the fuel of flame combustion around the air/fuel outlet 150 of premixing cavity 132, and thereby around the air/fuel mixture that leaves premixing cavity air/fuel outlet 150.Mix flare burner 130 is preferably designed in the following manner and is operated, and promptly carries the air capacity that enters the premixed district 131 that comprises premixing cavity 132 secretly and surpasses the required air stoichiometry amount of fuel that burning sprays into the premixed district.Excessive air is applied to the center of flame envelope, so that at internal-combustion fuel.Yet, as explaining in detail hereinafter, in some application scenarios, burner is designed in the following manner and operates, and promptly carries the air capacity that enters the premixed district 131 that comprises premixing cavity 132 secretly and is equal to or less than the required air stoichiometry amount of fuel that burning sprays into the premixed district.The middle body that the fuel and air mixture that will " be rich in fuel " (that is, the air stoichiometry amount of mixture is needed less than the burning of the fuel of supporting to introduce the premixed district) sprays into the flame envelope is desirable in some application scenarios.
Referring now to Figure 13-18,, the 3rd embodiment of mix flare burner of the present invention is illustrated, and is endowed Reference numeral 230 generally.Be similar to other embodiment of mix flare burner of the present invention, mix flare burner 230 comprises the premixed district 231 with premixing cavity 232, and the auxiliary fuel import 234 that is used for fuel is injected the premixed district, main fuel outlet 236 and fuel feed line 238.Ignition device (as being shown in Fig. 4) can be associated with burner 130, initially to light the fuel and air mixture by the burner discharging.
In the embodiment that is shown in Figure 13-18, the premixing cavity 232 of mix flare burner 230 provides the major part in premixed district 231.Fuel and air mixture (preferably basically uniformly mixture) can be formed in the premixed district that comprises premixing cavity 232 in 231.As described later, the mixture that is formed at premixed district 231 both can be rich in fuel, also can be that fuel is barren.Premixing cavity 232 comprises rectangular cross section and has rectangular shape.It comprises top 242, and bottom 244 is connected to the sidewall 246 of bottom with the top, is arranged in bottom 244 air intlet 248 and is arranged in the air/fuel outlet 250 at top.As shown in the figure, top 242 and bottom 244 are opened wide, thereby form air intlet 248 and air/fuel outlet 250.As a result, air intlet 248 and air/fuel outlet 250 has rectangular cross section respectively.
Be shown in Figure 14 as the best, premixed district 231 comprises the premixed space 231 (a) of premixing cavity 232 following (between the bottoms 244 and air intlet 248 of auxiliary fuel import 234 and premixing cavity), the inside 231 (b) of premixing cavity and be positioned at premixing cavity top 242 and the premixed space 231 (c) of air/fuel outlet 250 next-door neighbour tops.In the embodiment that is shown in Figure 13-18, the preliminary mixing of air and fuel betides in the inside 31 (b) and premixed space 231 (c) of premixing cavity 232.
The sidewall 246 of premixing cavity 232 comprises four sides 246 (a), 246 (b), 246 (c) and 246 (d).Each side 246 (a), 246 (b), 246 (c) and 246 (d) comprise inner surface 254 and outer surface 256.Outwards open with the form of curve the bottom 258 of each side 246 (a), 246 (b), 246 (c) and 246 (d), gives surface, annular section Anda 260 with sideways inner surface 254.The ratio of the length of premixing cavity 232 (or height) and hydraulic pressure internal diameter in about 0.25: 1 to 4: 1 scope, preferably approximately 1.1 to about 3: 1.The length of premixing cavity 232 (or height) and the actual ratio of hydraulic pressure internal diameter partly depend on by the type of the fuel of flame combustion with can be used for the pressure carrying secretly and mix.Generally speaking, longer premixing cavity can cause fuel and air to mix better therein; Yet this advantage will average out with cost and other factors.In a preferred embodiment, length (or height) is that premixing cavity 232 is about 1.5: 1 with the ratio of hydraulic pressure internal diameter.
Be shown in Figure 18 as the best, auxiliary fuel import 234 comprises two tubular distributing manifolds 264 (a) and 264 (b), has a plurality of fuel port 266 in each distributing manifold.Fuel port 266 is circular basically opening.Distributing manifold 264 (a) is positioned at such position with respect to premixing cavity 232, thereby on making that fuel can be ejected into surface, section Anda 260 on the inner surface 254 of side 246 (a) from manifold 264 (a).Similarly, distributing manifold 264 (b) is positioned at such position with respect to premixing cavity 232, thereby on making that fuel can be ejected into surface, section Anda 260 on the inner surface 254 of opposite flank 246 (c) from manifold 264 (b).It will be understood by those skilled in the art that in this embodiment the configuration of fuel port miscellaneous and jet flow can be used to inject fuel on the surface, section Anda.For example, the quantity of fuel port and interval can change based on the ideal thickness that will be created within section's lip-deep film in Anda.
Figure 17 A shows the substituting embodiment of each tubular distributing manifold 264 (a) and 264 (b).In this embodiment, fuel port 266 is elongated open or groove.The fluting shape of fuel port 266 causes that fuel is ejected into surface, annular section Anda 260 with sheet form, and this helps carrying secretly and immixture of enhancing section Anda surface generation, and the gas of permission more volume is by flame combustion.If necessary, groove 266 can be connected, to form continuous elongated open or groove in distributing manifold 264 (a) and 264 (b).Except circular open and groove, fuel port 266 can also form other shape based on specific application.The example of other shape comprises elongated oval and rectangular channel.
Rectangle fuel dividing plate 270 is arranged around the periphery of premixing cavity 232.Fuel dividing plate 270 is connecting fuel feed line 238 and is being communicated with main fuel outlet 236 and auxiliary fuel import 234 fluids.Dividing plate 270 comprises unlimited top 272, and bottom 274 and lateral wall 276 and madial wall 277 are connected to the bottom with the top.In the embodiment that is shown in Figure 13-18, madial wall 277 also is a premixing cavity sidewall 246.Sealing mechanism 278 attachings of coupling are in the bottom 274 of fuel dividing plate 270, and extend around the sidewall 246 of premixing cavity 232, to guarantee the globality of dividing plate.In substituting embodiment, as be illustrated in Figure 25-28 also as explained below, fuel dividing plate 270 can be from the side 246 (a) of the sidewall 246 of premixing cavity 232, the outer surface 256 of 246 (b), 246 (c) and 246 (d) outwards separates, so that provide the space between the outer surface of sidewall 246 and main fuel outlet 236.This space allows air position below burner to be entrained to and to be arranged on the adjacent point of fuel port 292 that main fuel exports 236 inside.In this embodiment, the madial wall 277 of dividing plate 270 is separated by with the sidewall 246 of premixing cavity 232.
Auxiliary fuel feed line 280 (a), 280 (b), 280 (c) and 280 (d) extend to auxiliary fuel import 234 from fuel dividing plate 270, promptly extend to tubular distributing manifold 264 (a) and 264 (b), to transmit fuel from the fuel dividing plate to it.Each auxiliary fuel feed line 280 (a), 280 (b), 280 (c) and 280 (d) comprise first end 282 and second end 284 of attaching in fuel dividing plate 270.Second end, 284 attachings of conduit 280 (a) and 280 (d) are in the opposite ends of tubular distributing manifold 264 (a).Second end, 284 attachings of conduit 280 (b) and 280 (c) are in the opposite ends of tubular distributing manifold 264 (b).
As be shown in Figure 16, if necessary, diffused fuel port 292 can spray into body 288 be separated by the gas riser or the terminal extension 296 of a plurality of corresponding weak points with fuel.Port 292 sprays into body 288 with fuel can cause in some application scenarios better laterally entrapped air at interval by riser 296.Riser also allows port is configured, and causes where necessary that the fuel flow behavior is mechanically changed.It will be understood by those skilled in the art that and spray into the port 292 that body 288 can comprise repetition of all kinds.Employed specific port arrangement depends on various factors, comprises by type of the fuel of flame combustion (comprising molecular weight, calorific capacity, stoichiometry and gas flow temperature) and relevant available pressure.
Referring to Figure 14, in burner 230 operations, will be conducted to fuel dividing plate 270 by fuel feed line 238 by the fuel of flame combustion (being depicted as black arrow substantially).Part fuel conducts to main fuel outlet 236 (spraying into body 288 with fuel) by fuel dividing plate 270.Remain a part of fuel and conduct to auxiliary fuel import 234 (with its tubular distributing manifold 264 (a) and 264 (b)) by fuel feed line 280 (a), 280 (b), 280 (c) and 280 (d) by dividing plate 270.Fuel is ejected into from the fuel port 266 of distributing manifold 264 (a) and 264 (b) on the surface, section Anda 260 on the inner surface 254 of the side 246 (a) of premixing cavity 232 and 246 (c).Fuel sprays into premixed district 231 and premixing cavity 232 from fuel port 266 and air can be carried secretly and enter premixed space 231 (a), and enter premixing cavity inside 231 (b) by air intlet 248, thereby fuel and air mixture (preferably uniform basically mixture) is formed in the premixed district, and is caused leaving air/fuel outlet 250.Fuel and air continue to be mixed in short distance on the air/fuel outlet 250.Fuel be ejected into from fuel port 266 surface, section Anda 260 on the inner surface 254 of side 246 (a) and 246 (c) can cause fuel deposition in and accompany or follow the path on surface, Yu Ke Anda, and form the film of relative thin thereon, this causes air more efficiently to be carried secretly and the mixing of air and fuel.To be sprayed from main fuel outlet 236 (spraying into body 288) by the periphery 286 of the fuel of flame combustion around the air/fuel of premixing cavity 232 outlet 250 with annular fuel, and thereby around the air/fuel mixture of the air/fuel outlet of leaving premixing cavity.Mix flare burner 230 is preferably designed in the following manner and is operated, and promptly carries the air capacity that enters the premixed district 231 that comprises premixing cavity 232 secretly and surpasses the required air stoichiometry amount of fuel that burning sprays into the premixed district.Excessive air is applied to the center of flame envelope, so that at internal-combustion fuel.Yet, as explaining in detail hereinafter, in some application scenarios, burner 230 is designed in the following manner and operates, and promptly carries secretly to enter premixed district 231 air capacities that comprise premixing cavity 232 and be equal to or less than burning and spray into the required air stoichiometry amount of fuel in premixed district.The middle body that the fuel and air mixture that will " be rich in fuel " (that is, the air stoichiometry amount of mixture is needed less than the burning of the fuel of supporting to introduce the premixed district) sprays into the flame envelope is desirable in some application scenarios.
The mix flare burner 230 of polygon (rectangle is shown in the embodiment) shape allows mix flare burner spaced apart to have more flexibility in ground flare is used.In addition, due to the fact that, promptly geometry can be rotated to change interaction area, and therefore how such shape guides fuel to leave to have greater flexibility aspect the diffusion gas port 292.
Referring now to Figure 19-23,, the 4th embodiment of mix flare burner of the present invention is illustrated and is endowed generally Reference numeral 330.Be similar to other embodiment of mix flare burner of the present invention, mix flare burner 330 comprises the premixed district 331 with premixing cavity district 332, and the auxiliary fuel import 334 that is used for fuel is injected the premixed district, main fuel outlet 336 and fuel feed line 338.Ignition device 40 (as being shown in Fig. 4) can be associated with burner 330, initially to light the fuel and air mixture by the burner discharging.
Fuel and air mixture (preferably basically uniformly mixture) can be formed in the premixed district that comprises premixing cavity 332 in 331.As described later, the mixture that is formed at premixed district 331 both can be rich in fuel, also can be that fuel is barren.Premixing cavity 332 comprises circular cross section and has cylinder form.Premixing cavity comprises top 342, and bottom 344 is connected to the sidewall 346 of bottom with the top, is arranged in bottom 344 air intlet 348 and is arranged in the air/fuel outlet 350 at top 342.Sidewall 346 comprises inner surface 347 and outer surface 349.As shown in the figure, top 342 and bottom 344 are opened wide, thereby form air intlet 348 and air/fuel outlet 350.As a result, air intlet 348 and air/fuel outlet 350 has circular cross section respectively.The ratio of the length of premixing cavity 332 (or height) and hydraulic pressure internal diameter at about 0.25: 1 to about 4: 1 scope.
In being shown in Figure 19,20,22 and 23 embodiment (it does not comprise the extension inflator of discussing later 400), the ratio of the length of premixing cavity 332 (or height) and hydraulic pressure internal diameter be about 1: 1 or below.Preferably, in being shown in Figure 19,20,22 and 23 embodiment (it does not comprise the extension inflator of discussing later 400), the ratio of the length of premixing cavity 332 (or height) and hydraulic pressure internal diameter at about 0.25: 1 to about 1: 1 scope.As previously discussed, longer premixing cavity allows fuel and air to mix better in premixing cavity haply.Yet, find that in the embodiment that is shown in Figure 19 and 20, the length of premixing cavity 332 (or height) also is enough to realize good mixing, as long as keep ignition delay by relaxing flame propagation velocity.Be shown in Figure 20 as the best, in this specific implementations (it does not comprise the extension inflator of discussing later 400), premixed district 331 comprises the significant premixed space 331 (a) of premixing cavity 332 following (spraying at auxiliary fuel between the bottom 344 and air intlet 348 of device 334 and premixing cavity), the inside 331 (b) of premixing cavity and be positioned at the top 342 of premixing cavity and the premixed space 331 (c) of air/fuel outlet 350 next-door neighbour tops.In this embodiment, the mixing of air and fuel betides in all three sections in premixed district 331.
As be shown in Figure 19 and 22, and auxiliary fuel import 334 comprises burner foundry goods 352, and it has nose of an ox shape portion 353 and a plurality of fuel outlet arm 354, and described fuel outlet upper-arm circumference is around nose of an ox shape portion's arranged concentric and be centered at below the air intlet 348 of premixing cavity 332.Auxiliary fuel import 334 is concentric with air intlet 348 and premixing cavity 332.In the embodiment that is shown in Figure 19 and 20, auxiliary fuel import 334 is arranged on below the air intlet 348 of premixing cavity 332 separatedly.Auxiliary fuel import 334 can be positioned at air intlet 348 following zero to two inches places; Preferably be about below the air intlet one inch.Actual range can change based on by the type of the fuel of flame combustion, specific application, the length and the other factors of the flame envelope of permission.
Each fuel outlet arm 354 and nose of an ox shape portion 353 comprise a plurality of fuel port 356.Port 356 is along the longitudinal axis linear distribution of each fuel outlet arm 354.The substituting embodiment of auxiliary fuel import 334 is shown in Figure 23.In this embodiment, each gas vent arm 354 comprises two row's diffused fuel ports 356, and each port among every row is positioned as not directly to the port among the adjacent row.Auxiliary fuel import 334 comprises fuel outlet arm 354, deliberately be arranged to less so that interact as much as possible between discharge fuel and the entrapped air." bluff body " effect that is produced by the size and dimension of import 334 is minimized, to form the clean approach of air to discharge fuel.
Annular fuel dividing plate 360 is arranged around the periphery of premixing cavity 332.Fuel dividing plate 360 is connecting fuel feed line 338 and is exporting 336 fluids with main fuel and is being communicated with.Dividing plate 360 comprises unlimited top 362, bottom 364 and with the top be connected to the bottom lateral wall 366 and madial wall 367.In a preferred embodiment, lateral wall 366 is separated by about three inches (this distance depends on the character and the whole burner structure of fuel) with madial wall 367.In being shown in Figure 19,20,22 and 23 embodiment, the madial wall 367 of dividing plate 360 also is the outer surface 349 of the sidewall 346 of premixing cavity 332.In substituting embodiment, as be illustrated in Figure 25-28 also as explained below, fuel dividing plate 360 can outwards separate from the outer surface 349 of the sidewall 346 of premixing cavity 332, so that provide annular space between the outer surface 349 of sidewall 346 and main fuel outlet 336.This space allows air position below burner to be entrained to and to be arranged on the adjacent point of fuel port 374 that main fuel exports 336 inside.In this embodiment, the madial wall 367 of dividing plate 360 separates with the sidewall 346 of premixing cavity 332.
Main fuel outlet 336 tops 342 with respect to premixing cavity are positioned at such position, thereby the periphery 368 that makes fuel can center on the air/fuel outlet 350 of premixing cavity sprays into from main fuel outlet 336.Be shown in Figure 22 as the best, main fuel outlet 336 comprises that smooth annular fuel sprays into body 370, has a plurality of fuel port 374 in it.The fuel jet that is produced by port 374 is the diffused fuel jet flow.Port 374 preferably is separated by with six degree step pitches, although this can change based on specific application at interval.Annular fuel sprays into the top 362 opened wide of body 370 attachings in toroidal membrane 360, thereby fuel port 374 is arranged around the periphery 368 of the air/fuel outlet 350 of premixing cavity.It is basic identical that toroidal membrane 360 and fuel spray into the internal diameter and the external diameter of body 370.Fuel is injected from main fuel outlet 336 (that is, fuel sprays into body 370) ringwise around the periphery 368 of air/fuel outlet 350.Port 374 can be set up size and spacing, to control the mode (for example, direction and speed) that fuel is injected from port.The combination of this feature is gone up by air/fuel and is exported flowing of 350 fuel and air, allows the shape of whole flame envelope and the length can be controlled.
As be shown in Fig. 7, if necessary, diffused fuel port 374 can spray into body 370 be separated by the gas riser or the terminal extension 376 of a plurality of corresponding weak points with fuel.Port 374 sprays into body 370 with fuel can cause in some application scenarios better laterally entrapped air at interval by riser 376.Riser also allows port is configured, and causes where necessary that the fuel flow behavior is mechanically changed.It will be understood by those skilled in the art that fuel sprays into the port 374 of body 370 to comprise repetition of all kinds.Employed specific port arrangement depends on various factors, comprises by type of the fuel of flame combustion (comprising molecular weight, calorific capacity, stoichiometry and gas flow temperature) and relevant available pressure.
Especially referring to Figure 21, the substituting embodiment of mix flare burner 330 is illustrated now.This embodiment is identical with the embodiment of previously described burner 330, except also comprising premixing cavity extension inflator 400.Premixing cavity extends the length that inflator 400 extends through premixing cavity 332.In this embodiment, the ratio of the length of premixing cavity (or height) and hydraulic pressure internal diameter about 1: 1 to about 4: 1 scope, more preferably at about 1: 1 to about 3: 1 scope.More preferably, in this embodiment, the length of premixing cavity (or height) is about 1.5: 1 with the ratio of hydraulic pressure internal diameter.Tube 400 comprises top section 402, bottom stage 404 and the interlude 406 that top section and bottom stage are linked together.Interlude 406 attachings are in the madial wall 367 of annular fuel dividing plate 360.
Because premixing cavity extends inflator 400, the top 342 of premixing cavity 332 and air/fuel outlet 350 are spaced apart and arranged in main fuel and export 336 tops.The outlet 350 of the top 342 of premixing cavity 332 and air/fuel above main fuel outlet 336 about 0.5 inch to about 10 inches scope, preferably about 6 inches to about 8 inches scope.Actual range can be based on being changed by the type of the fuel of flame combustion, specific application, the flame envelope height and the other factors of permission.The bottom 344 of premixing cavity 332 is concordant with auxiliary fuel import 334 approximately or be higher than auxiliary fuel import 334 about an inch.As be shown in Figure 21, in this specific implementations (comprise and extend inflator 400), premixed district 331 comprises the premixed space 331 (a) of premixing cavity 332 following (spraying at auxiliary fuel between the bottom 344 and air intlet 348 of device 334 and premixing cavity), the inside 331 (b) of premixing cavity and be positioned at premixing cavity top 342 and the premixed space 331 (c) of air/fuel outlet 350 next-door neighbour tops.In this embodiment, the main air and the mixing of fuel betide (in premixed district 331 (b)) in the premixing cavity 332.
The top section 402 that premixing cavity extends inflator 400 is used as the physical barriers that windscreen and delay are lighted simultaneously.Specifically, top section 402 has been offset harmful cross-current air effect, and this effect can force flame to be positioned within the internal diameter of premixing cavity and disturb the smokeless ability of mix flare burner.Top section 402 also is used to isolate pre-mixed fuel stream to be made it not lighted by diffusion flame.Similarly, tube 400 bottom stage 404 is as the bottom windscreen and help to prevent that flame is pulled and causes premature ignition.Equally, the length of extending the premixing cavity 332 of the increase that inflator 400 causes can strengthen fuel and the mixing of air in premixing cavity.The tube that extends is not essential in all application scenarios; For example, not obvious when the cross-current effect, or when low-molecular-weight fuel during by flame combustion, it is just optional.Comprise or do not comprise that this shield depends on by the molecular weight of the fuel of flame combustion and calorific capacity, fuel comprises saturated still undersaturated hydrocarbon, related temperature and pressure, and other factors.
In being shown in the embodiment of Figure 21, madial wall 367 attachings of dividing plate 360 are in the interlude 406 that extends inflator 400.In substituting embodiment, as be illustrated in Figure 25-28 also as explained below, fuel dividing plate 360 can outwards separate from extending inflator 400 outer surface of premixing cavity 332 (and thereby), so that provide the space extending between inflator outer surface and the main fuel outlet 336.This space allows air position below burner to be entrained to and to be arranged on the adjacent point of fuel port 374 that main fuel exports 336 inside.
Referring to Figure 20 and 21, the operation of mix flare burner 330 will be described.A part will be conducted to fuel dividing plate 360 and main fuel outlet 336 by the main split 380 of the fuel of flame combustion (being depicted as black arrow substantially) by fuel feed line 338.Some will be conducted to auxiliary fuel import 334 by the secondary branch 390 of the fuel of flame combustion by fuel feed line 338.Fuel sprays into premixed district 331 and premixing cavity 332 from auxiliary fuel import 334 and air can be carried secretly and enter premixed space 331 (a), and enter premixing cavity by air intlet 348, thereby fuel and air mixture (preferably uniform basically mixture) is formed in the premixed district and is caused leaving air/fuel outlet 350.Fuel and air continue to be mixed in short distance on the air/fuel outlet 350.To be sprayed from main fuel outlet 336 by the periphery 368 of the residual fuel of flame combustion around the air/fuel of premixing cavity outlet 350, and thereby around the air/fuel mixture of the air/fuel outlet of leaving premixing cavity.Equally, when being equipped with when extending inflator 400, additional mixing can realize, and the pre-mixed stream of leaving air/fuel outlet 350 with discharge the diffusion flame interaction that forms because of fuel from main fuel outlet 336, thereby isolated and can premature ignition.Use and extend inflator 400, can be used for strengthening the whole structure that utilizes pre-mixed stream to produce.Mix flare burner 330 is preferably designed in the following manner and is operated, and promptly carries premixed district 331 air capacities that comprise premixing cavity 332 spray into the premixed district above burning the required air stoichiometry amount of fuel that enters secretly.Excessive air is applied to the center of flame envelope, so that at internal-combustion fuel.Yet, as explaining in detail hereinafter, in some application scenarios, burner 330 is designed in the following manner and operates, and promptly carries secretly to enter premixed district 331 air capacities that comprise premixing cavity 332 and be equal to or less than burning and spray into the required air stoichiometry amount of fuel in premixed district.The middle body that the fuel and air mixture that will " be rich in fuel " (that is, the air stoichiometry amount of mixture is needed less than the burning of the fuel of supporting to introduce the premixed district) sprays into the flame envelope is desirable in some application scenarios.
Referring now to Figure 25-28,, can a kind of transformation that the 4th embodiment (being shown in the embodiment of Figure 19-23) of previously described mix flare burner of the present invention is made be illustrated.Identical transformation also can be implemented on first, second and the 3rd embodiment of previously described mix flare burner of the present invention.
In this embodiment, mix flare burner 330 comprises that premixing cavity extends inflator 400.Yet, not by direct attaching in fuel dividing plate 360, extending inflator 400 (and thereby premixing cavity 332) inwardly is separated by from the fuel dividing plate, between extension inflator and fuel dividing plate, to provide air flue, arrive the inside main fuel outlet 336 that fuel port 374 is arranged in effectively to allow air.The diameter that extends inflator 400 (and thereby premixing cavity 332) is significantly less than the diameter of fuel dividing plate 360.In this embodiment, the ratio of the length of premixing cavity (or height) and hydraulic pressure internal diameter about 0.5: 1 to about 4: 1 scope, more preferably at about 1: 1 to about 3: 1 scope.More preferably, the length of premixing cavity (or height) and the ratio of hydraulic pressure internal diameter are in about 1.5: 1 scope.
Because it is less to extend the diameter of shield 400, so annular space 430 is present between the outer surface (it also is the outer surface 349 of the sidewall 346 of premixing cavity 332) of the madial wall 367 of fuel dividing plate 360 and extension inflator 400.A plurality of thin rectangular shape gusset plates 432 are used to neutralization is kept extending inflator 400 (and thereby premixing cavity 332) in fuel dividing plate 360.As shown in the figure, four plates 432 are arranged to 90 ° and are separated by in annular space 430.One end attaching of each plate 432 is in the madial wall 367 of fuel dividing plate 360.The other end attaching of each plate 432 is in the outer surface (it also is the outer surface 349 of the sidewall 346 of premixing cavity 332) that extends inflator 400.Except above-mentioned remodeling, the embodiment with previously described Figure 19 of being shown in-23 is identical in all respects to be shown in the burner 330 of Figure 25-28.
It will be understood by those skilled in the art that identical transformation also can be applied to other three embodiments of previously described mix flare burner of the present invention.For example, when modification was shown in the embodiment of Fig. 4-8, the cross-sectional diameter of premixing cavity 32 reduced, and premixing cavity 32 inwardly is separated by from fuel dividing plate 60.The madial wall 67 of annular fuel dividing plate 60 or the sidewall 46 of premixing cavity 32 can be added (as shown in the figure, the dividing plate madial wall is identical with the premixing cavity sidewall).Lip ring 68 is cancelled.Premixing cavity 32 inwardly provides air space at interval from fuel dividing plate 60 between premixing cavity and fuel dividing plate.Like this, fresh air can be carried secretly from burner below to the point that closely approaches to export from main fuel the fuel that the fuel port 74 of 36 inside discharges.Premixing cavity 32 can be centered in the fuel dividing plate 60 and by being shown in Figure 25-more than 28 gusset plate attaching on fuel dividing plate 60.
Figure 28 has described the flame envelope 100 by the remodeling mix flare burner 330 that is shown in Figure 25-27 (and burner 130,230 and 330 of transforming in the same manner) generation haply.As shown in the figure, excess air sprays into the core 102 of flame envelope 100 from premixing cavity 332.Excessive air is expressed as air pocket 103 at Figure 28, with the fuel mix of the core 102 of flame envelope 100, in fact to form two flammable original areas, promptly distinguishes 104 (a) and 104 (b).Air also is entrained to the point that closely approaches the fuel of being discharged by the fuel port 374 of the inboard row in the main fuel outlet 336 from burner 330 belows by annular space 430.The air of carrying secretly by annular space 430 has strengthened mixing condition, and produces faster and more uniform burning in whole flame envelope 100.As be shown in Figure 28, for the fuel of same amount, the length 106 of flame envelope 100 is significantly less than the length 23 of the prior art flame envelope 20 that is shown in Fig. 3.
Overall information
The partly-premixed method of closing of the present invention allows along with fuel is caused two flame zones by flame combustion in identical flame envelope.Outer flame zone is typically consistent with the common flame zone that observed in the type that the burner of institute's type of service before this promptly only uses diffusion to mix.Outer field gas is crashed to pieces to expose the gas of successive layer, with diffusion and the subsequent combustion that realizes repeating.Second flame zone is produced by the premixed district of burner, and the premixed district is transferred to main flame envelope inside with combustible mixture.This burning field of flow is used for producing tangible turbulent-flow conditions at the flame core, and they are different fully with common diffusion flame.Fuel is barren more along with the displacement of premixed district, and flame is owing to the additional oxidant that transfers to the flame core shortens.Excessive air is remained the floating cigarette of flame and is used, and is used to shorten flame (or making mass flow reduce), simultaneously also as the quick cooler structure, to reduce emission for example nitrous oxide and carbon monoxide.Excessive air has also reduced the formation of cigarette ash and any unburned hydrocarbons that causes burning.
Each mix flare burner 30,130,230 and 330 is preferably designed like this and is operated, thus the air capacity of carrying the middle body that enters the premixed district and spray into the flame envelope secretly the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district about 15% to about 300% scope.Therefore, ((the air stoichiometry amount is sprayed into the middle body of flame envelope less than 100% fuel and air mixture of the needed air stoichiometry amount of burning of fuel that support to introduce the premixed district) and the barren mode of fuel (the air stoichiometry amount is sprayed into the middle body of flame envelope greater than 100% fuel and air mixture of the needed air stoichiometry amount of burning of the fuel of supporting introducing premixed district) all can be used to be rich in fuel mode.Each mode drives burning condition with previously used typical case's diffusion/free jet and compares the advantage that all has oneself.Employed ad hoc fashion depends on specific application, comprises by the type of the fuel of flame combustion and operational pressure.Described mode can be transformed with typical port and fuel transport sector.
When being rich in fuel mode and being used, the fuel meat that sprays into flame envelope center will cause that the burning of flame core is formed little parcel, and this can shorten flame, and produce additional turbulent combustion district at flame envelope center.When the barren mode of fuel was used, because bigger pre-mixed fuel part is burnt at the flame core, the flame envelope can obviously shorten.The excess air of premix flow condition support is used for further causing burning with respect to the center of residue flame envelope.The additional turbulent flow that fuel produces expands at flame kernel in combustion process, and can smash intensive fuel core and push it against outer flame edge, thus the mixing condition of promoting residual fuel.
When being rich in fuel mode and being used, importantly the pre-mixed stream to the central transmission of flame envelope maintains within the incendivity scope.Otherwise, the mixing and burning of the enhancing at the center of flame envelope may not can occur.Premixed flame is benefited from the mixing that strengthens, and it originates in the flame core and expands with obvious speed, to produce significantly turbulent flow at the flame core.
Yet, in most of application scenarios, it is desirable spraying the middle body that " barren " fuel and air mixture (that is, the air stoichiometry amount of mixture is greater than 100% of the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district) enters the flame envelope.In most of application scenarios, the air capacity of carrying the middle body that enters the premixed district and spray into the flame envelope secretly the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district about 125% to about 300% scope.Preferably, carry secretly the air capacity that enters the premixed district the required air stoichiometry amount of the fuel combustion of supporting to spray into the premixed district about 150% to about 300% scope, more preferably about 175% to about 300%.Along with increasing, the amount of carrying the excess air that enters the premixed district secretly (that is to say, surpass the needed air stoichiometry amount increase of burning that the fuel in premixed district is introduced in support along with carrying the air capacity that enters the premixed district secretly), about the advantage of the length of flame and emission also can increase.Although carrying the air capacity that enters the premixed district secretly is useful greater than 300% of the required air stoichiometry amount of the fuel combustion of supporting to spray into the premixed district, but this needs extra air to carry source (for example air-flow injection) and other modification of possibility secretly, and may therefore cause cost to be difficult to bear.
The air capacity height of carrying the premixed district that enters each burner 30,130,230 and 330 secretly depends on from the pressure and the mass flow of the fuel of auxiliary fuel import injection, by the type of the fuel of flame combustion, the structure of auxiliary fuel import, the quantity and the size that comprise port wherein, the auxiliary fuel import is with respect to the location of the air intlet that feeds premixing cavity, and the size of air intlet.In most of application scenarios, final goal is to realize highly desalination, is preferably the ignited mixture of fuel and air.The fuel that the barren mixture that can ignite is required with fast Absorption, thereby in case the core that arrives flame envelope inside incendivity again just.After having realized flammable mixture, air will be in the inner big flame district that produces of flame envelope, and this can significantly increase fuel oxidation speed, can also produce significant turbulent flow simultaneously, and also increases the diffusion mixing of flame zone outer surface.The additional mass that is transferred to flame envelope center is also as the quick cooler structure, to reduce the generation of emission, for example nitrous oxide and carbon monoxide.The burning velocity that increases is kept two flame fronts simultaneously, can also be used to reduce the generation of carbon monoxide and cigarette ash, and further reduce the release of unburned hydrocarbons.
Fuel is injected the premixed district with enough momentum, so that air radially is entrained to below burner fuel jet and the premixed district.Depend on fuel molecule amount and the transmission pressure that can Gong carry secretly, burner can be below the auxiliary fuel import maximum 2 feet entrapped airs.
Preferably, introduce each burner 30,130,230 and 330 premixed districts fuel amount will by the total amount of fuel of mix flare burner flame combustion about 5% to about 50% scope, more preferably about 10% to about 30% scope.More preferably, the fuel quantity of introducing premixing cavity will by the total amount of fuel of mix flare burner flame combustion about 10% to about 25% scope.By diameter and the fuel pressure that fuel port is set, can control the fuel quantity of introducing the premixed district.
The fuel proportion of introducing the premixed district is big more, and flame is short more, and the smokeless ability of burner is high more.Yet spraying into the fuel ratio in premixed district and can be carried secretly must the correct balance of realization between the air capacity that enters the premixed district.When the barren mode of fuel is used, usually importantly carries the air capacity that enters the premixed district secretly and be about at least 125% of the required air stoichiometry amount of the fuel combustion of supporting to spray into the premixed district.The air of less amount will produce high response (flammable) mixture, and it causes burner to be easy at full throttle strile-back or backflash, cause that finally burner damages.The amount of entrapped air is big more, and fast cold effect is big more, and fuel flame speed is low more.Such condition is confined to the flame core so that guarantee the firing point of pre-mixed stream before burning, to obtain but greatest benefit for promoting that the pre-mixed stream ignition delay is desirable.
Fully the air and the fuel stream of desalination will guarantee that air and fuel mixture are not lighted, and leave the center of air/fuel outlet and arrival flame envelope until mixture.In case fuel and air mixture leaves the air/fuel outlet and enters the flame envelope, mixture will absorb enough additional fuels and become combustible mixture, and this moment, fuel was lighted in main flame envelope inside.This mobility program has produced the flame that is arranged in flame, or the anchor ring flame geometry of burning with two independent flame fronts.The additional turbulent flow that gas produces in combustion process expands at flame kernel, and this can be used for smashing intensive fuel core and pushes it against outer flame edge, thereby promotes the mixing condition of residual fuel.The possibility that this mode has reduced flame height and smoldered is simultaneously also owing to the mixing that increases has improved whole efficiency of combustion.
Importantly air/fuel mixture does not burn in the premixed district of each burner 30,130,230 and 330, leaves the air/fuel outlet in premixed district until it.For example,, can produce back pressure, and greatly reduce and carry the air capacity that enters premixing cavity secretly premixing cavity in the premixing cavity internal combustion.
By only a part being transferred to the premixed district of each burner 30,130,230 and 330 by the fuel of flame combustion, the entire cross section size of burner is less relatively.In design with build in the time of can supplying the burner of 100% burning required air in fully premixed mode of closing, its size can be restricted usually.The venturi of this burner or blender part will inevitably be quite big, and do not possess the ability that is suitable for low fuel pressure.
Although each burner 30,130,230 of the present invention is relative less with 330 premixing cavity, entire equipment can provide sufficient air and fuel to produce premixed air and fuel stream, and it has the excess air of carrying secretly of significant quantity.As a result, can realize the remarkable enhancing that fuel flows, and the flame height and the diameter that equate.Based on will be by the type of the fuel of flame combustion, burner of the present invention be adapted to the fuel flow rate that can be designed easily, so that the speed of transmission fuel surpasses 1.4 times of typical flow rate of previously used diffusion spray pattern burner.In most of the cases, the roughly the same length of flame and diameter are also kept in the realization of this point simultaneously.If allow to use bigger flame height, then to compare with the accessible flow rate of previously used diffusion spray pattern burner, fuel flow rate can be significantly higher.In addition, aspect each embodiment of burner of the present invention, can keep and light at interval and the reduction ability, improve fuel flow rate simultaneously.Aspect low-molecular-weight fuel, because the mitigation of flame, the heat radiation part of flame also can reduce to a certain extent, thereby reduces whole flame temperature.In some cases, this allow burner keep or minimum zone ground increase burner and fence between distance, although fuel flow rate has been enhanced.The excess air that transfers to flame kernel not only is used to apply air to flame kernel, but also has reduced time-varying speed, and wherein, the floating cigarette of the fuel that is produced is oxidized when leaving the burner end.This can cause more cleaning, smokeless flame, and it shortens pro rata for given heat release.Desalination and the cold effect of the follow-up speed of flame also are used to reduce nitrous oxide and carbon monoxide emission thing.Fuel and air also help the cool burner assembly by flowing of premixing cavity.
The various structures of auxiliary fuel import have been described in the front.Other structure also is feasible, comprises that being drilled with multiple spot sprays into device body or house steward, so that the air under available fuel pressure is carried secretly and mixed maximization.The hypomere of previously described each embodiment can comprise that surface, section Anda maybe can be a straight section.If surface, section Anda is used, then the port in the auxiliary fuel import can be circular eyelet (jet flow) or groove.Except section's Anda technology, fuel can spray into from the auxiliary fuel import with higher relatively speed, can spray into the fuel and air mixture at flame envelope center with quick acquisition.Each size of component of mix flare burner of the present invention comprises changing the size of premixing cavity and fuel dividing plate.In addition, various ports configuration (for example, port sizes; Interval between the port) can be used for main fuel outlet and auxiliary fuel import.Employed specific dimensions and structure depend on the type and the molecular weight of fuel, its temperature, calorific capacity and respond, operating parameter (for example, operational pressure) and other factors.
Although be not fully necessary, third party's inert fluid (tertiary inertingfluid) can spray into the premixed district of mix flare burner of the present invention (any mix flare burner embodiment), to strengthen air carrying secretly in the premixed district.The example of operable third party's inert fluid comprises steam, air and nitrogen.Steam is preferred.
Accompanying drawing shows the circle and rectangle (polygon) embodiment of mix flare burner of the present invention.Each embodiment of mix flare burner of the present invention also can form other geometry.For example, except circular and rectangular shape, ellipse, triangle, square, pentagon, octagon and other polygonal shape can adopt.Other geometry provides benefit at cost or manufacture view.Best mode is to produce desalination excess air stream, and it is transferred to flame main center from premixing cavity then.Yet, being rich in fuel stream and also can providing benefit with respect to previously used only spreading combustion burner, this is because burner of the present invention can produce the mixing of enhancing.
Ground flare of the present invention
Referring now to Figure 29,, ground flare of the present invention is schematically shown, and is endowed Reference numeral 420 generally.Ground flare 420 comprises a plurality of mix flare burners 422, the enclosure wall 424 that extends around mix flare burner and be used for fuel supply lines 426 to the mix flare burner fuel supplying.
Mix flare burner is arranged to a plurality of rows 430 (a)-(f) and row 432 (a)-(e).Row 430 (a)-(f) form the first order 434 mix flare burners 422, form the second level 436 mix flare burners and arrange 432 (a)-(e).At least one mix flare burner 422 is an embodiment of previously described mix flare burner of the present invention.Preferably, each mix flare burner 422 in 436 mix flare burners 422 of the second level (burner that uses when the fuel requirement of large volume is by flame combustion relatively) is an embodiment of previously described mix flare burner of the present invention.If necessary, each mix flare burner 422 in the first order 434 burners and the second level 436 burners all is an embodiment of previously described mix flare burner of the present invention.
One group of ignition device 460 (a)-(f) is communicated with first order supply line 444 fluids, and is placed suitable burner and fuel room spacer before lighting.Ignition device is located adjacent to first mix flare burner 422 in the respective row 430 (a)-(f) usually.Similarly, one group of ignition device 462 (a)-(e) is communicated with second level supply line 446 fluids, and is located adjacent to first mix flare burner 422 in the respective row 432 (a)-(e).
In ground flare 420 operations of the present invention, will be conducted to distributing manifold 442 by Trunk Line 440 by the fuel of flame combustion.The valve control system (not shown) is used for fuel is dispensed to first order fuel supply lines 444, or is dispensed to first order fuel supply lines 444 and second level fuel supply lines 446.If the fuel of small size is conducted to distributing manifold 442 relatively, then valve system only guides to first order fuel supply lines 444 with fuel.If it is relatively large to conduct to the gaseous fuel volume of distributing manifold 442, then fuel is conducted to first order fuel supply lines 444 and second level fuel supply lines 446.If necessary, can also adopt additional classification, with importing and the derivation of performance period.Based on volume of fuel, fuel conducts to corresponding independently supplying pipeline 450 (a)-(f) and/or 452 (a)-(e) from fuel supply lines 444 and 446 one or both of.Fuel conducts to mix flare burner 422 respective row 430 (a)-(f) and 432 (a)-(e) from independently supplying pipeline 450 (a)-(f) and/or 452 (a)-(e).
As needs, ignition device 460 (a)-(f) and 460 (a)-(e) light the fuel that corresponding first burner 422 from every row is discharged.Light the fuel of discharging subsequently from the fuel that every row's first burner 422 is lighted, and light the fuel that next burner is discharged among this row, and so continue, all lighted until the fuel that each burner from this row is discharged from adjacent burner.The required air that burns sucks by enclosure wall 424 and/or below the wall of enclosure wall 424.Not to supply air to burner 422 or ground flare individually.
Ground flare of the present invention from relative small size fuel (for example can be used for burning, per hour 3,000 pound or following) extremely relative large volume fuel gas is (for example, per hour 10,000 to 15,000 pound and more than, based on will be by the molecular weight of the fuel of flame combustion, operational pressure, temperature and other factors).Even under very high flow rate (for example, per hour 10,000 pounds), the flame envelope that is produced by ground flare burner of the present invention also can obtain in typical ground flare enclosure wall.Because the structure of mix flare burner of the present invention, the fuel of more volume can be with less port and higher pressure by flame combustion, and can significantly not increase the height of the flame envelope that is produced by ground flare.Perhaps, flame height can reduce, and reduces height to allow enclosure wall 424.Burner of the present invention sucks air below burner, this allows burner to be positioned near ground, and this causes reducing the desired height of enclosure wall 424 again.Because the burner and the related elements of lesser amt, needed above ground portion is less.
In many situations, existing ground flare can be by repacking mix flare burner 422 of the present invention, with allow more will be by the fuel of flame combustion, and can not cause that the highly significant of flame envelope surpasses around the height of the enclosure wall of ground flare.In addition, because the structure of burner, the smokeless rate of given torch end can significantly improve on a large scale.Because realized the quantum of output that increases, each house steward can be transferred more gas.This can cause still less house steward to be connected still less controlling organization for example gas control valve, stop valve, adjuster and physical pipeline.Obtaining bigger ability with still less house steward also makes enclosure wall 434 to reduce.
Ground flare of the present invention can be used for the flame combustion fuel gas.Example comprises saturated and unsaturated hydrocarbon, the mixture of propane and propylene and they for example, separately or have hydrogen, water vapour and/or inert gas for example nitrogen, carbon monoxide, an argon gas etc.
Previously described ground flare of the present invention is intended to explain ground flare, and how mix flare burner particularly of the present invention is used relatively.It will be understood by those skilled in the art that ground flare equipment can change aspect following: how they constitute, the quantity of burner and type, house steward, running system, control valve and related elements, around the enclosure wall type and the height of equipment, and many others.Ground flare of the present invention comprises any ground flare equipment that has used mix flare burner of the present invention.
Method of the present invention
The method according to this invention, fuel are burnt in a mix flare burner 30,130,230 of the present invention or 330.Referring to Figure 24, fuel sprays into body (that is, main fuel outlet 36,136,236 or 336) by fuel and sprays into combustion zone 101, and is lighted to produce flame envelope 100 and combustion fuel.A part comprises that with what burned fuel was introduced into burner by this way premixing cavity (promptly, premixing cavity 32,132,232 or 332) premixed district can carry air secretly and enter the premixed district and generation air and fuel mixture (preferably uniform basically mixture) in the premixed district.Air and fuel mixture spray into the middle body 104 of flame envelope then from premixing cavity.Equally, as previously discussed, the air capacity of carrying the middle body that enters the premixed district and spray into the flame envelope secretly can be from being rich in fuel but combustible mixture surpasses the mixture of the required stoichiometry of burning to entrapped air.This pre-mixed fuel and the air stream that sprays into flame envelope center causes second flame zone, produces the flame envelope of torus shape.The long and be whole flame envelope faster and more uniform burning, thereby realize the advantage that discuss in conjunction with mix flare burner of the present invention the front.
As previously discussed, carry secretly the air capacity that enters the premixed district and spray into the middle body of flame envelope be preferably fuel that support to introduce the premixed district the needed air stoichiometry amount of burning about at least 15%.In some application scenarios, the middle body that the fuel and air mixture that will " be rich in fuel " (that is, in the mixture aerochemistry metered amount less than 100% of the burning needed air stoichiometry amount of the fuel of supporting to introduce the premixed district) sprays into the flame envelope suits.Yet, in most of application scenarios, the middle body that " barren " fuel and air mixture (that is, in the mixture aerochemistry metered amount greater than 100% of the needed air stoichiometry amount of burning of fuel that support to introduce the premixed district) is sprayed into the flame envelope is desirable.In most of application scenarios, the air capacity of carrying the middle body that enters the premixed district and spray into the flame envelope secretly the needed air stoichiometry amount of burning of the fuel of supporting to introduce the premixed district about 125% to about 300% scope.
Introduce premixed district and premixing cavity (promptly, premixing cavity 32,132,232 or 332) fuel quantity will by the total amount of fuel of mix flare burner flame combustion about 5% to about 50% scope, more preferably about 10% to about 30%, more preferably about 10% to about 25%.
The present invention provide embodiment below in order further to explain.
Example I
High power capacity diffused ground flare burner as the mix flare burner 30 of first embodiment of mix flare burner of the present invention and prior art is that the burner shown in Fig. 1 and 2 compares.Two mix flare burners of the present invention are tested, and one length is about 30 inches, and another length is about 16 inches.The port of mix flare burner of the present invention offers three square inches the flow area that comprises with the prior art mix flare burner to be complementary.
Mix flare burner of the present invention is at first tested separately.Utilize propane and propylene to test.About 20% fuel is sprayed into the premixing cavity of each mix flare burner of the present invention.Residual fuel is then sprayed around the air/fuel mixture periphery of discharging from premixing cavity.Can determine, utilize this two kinds of fuel, each mix flare burner of the present invention can both support significant fuel to flow, and produces smokeless flames simultaneously.The flame envelope of finding each burner is highly stable, can obtain significant reduction ratio, and very symmetrical in whole heat release combustion range.It is very little and have a minor diameter to observe the length of flame envelope of each burner.
Length of the present invention is that about 30 inches mix flare burner compares with the prior art burner subsequently.Two mix flare burners are tested side by side.The burner attaching is provided to each burner with the fuel of guaranteeing equal volume on identical house steward.
Observe, in the test point of great majority observation, mix flare burner of the present invention produces the flame envelope that shortens.In the reduction process, mix flare burner of the present invention under low pressure keeps burning.Under the maximum fuel flow rate, the total length of the flame envelope that mix flare burner of the present invention produces is with prior art high power capacity diffused ground flare burner reduced in comparison.Yet in this scheme, the vertical cross section (width) of the flame envelope that is produced by the prior art mix flare burner is greater than the flame envelope that is produced by mix flare burner of the present invention.Mix flare burner of the present invention does not observe and strile-backs, and is starkly lower than 1psig until pressure.The heat radiation of the flame envelope that produces from mix flare burner of the present invention looks the heat radiation that is equivalent to or is slightly less than the flame envelope that the prior art mix flare burner produces.Under the reduction condition, the smoke level of prior art mix flare burner is approximately identical with mix flare burner of the present invention.Under approximately identical flow rate and pressure, two kinds of burners all have the tail cigarette usually.Yet in initial testing, under lower pressure, the tail smoke density of mix flare burner of the present invention looks and continues to be lower than the spreading combustion burner end.Along with pressure reduces, the prior art burner becomes the cigarette that generation increases the weight of.
Example II
Also tested and compare as the mix flare burner 230 of the 3rd embodiment of mix flare burner of the present invention with prior art mix flare burner previously discussed.This embodiment of mix flare burner of the present invention looks and is equivalent to the prior art burner at least.Yet the cigarette that burner of the present invention under low pressure produces is more than mix flare burner of the present invention first embodiment of describing in the example I.The no smoke performance of smokeless working range and prior art mix flare burner is roughly suitable.
In this test, the bight of the premixing cavity of mix flare burner of the present invention has produced complicated flow pattern, and it is from visually being rendered as the mixing condition that hinders to a certain extent the premixing cavity.As a result, parasitic layering is rich in the fuel region and is observed the bight that is formed on the premixed discharge areas, causes being observed visible smoke stratification on the whole surface of flame zone.On the other hand, tested mix flare burner of the present invention treatable fuel quantity be almost three times of prior art mix flare burner.
A weldment that is used for assembling the mix flare burner test cell of the present invention that present embodiment describes breaks down and ultimate failure (only having experienced test to a certain degree).This weldment only is used for this test cell (being made by carbon steel); The fault of weldment is not because of design reasons, and irrelevant with the work or the performance of Actual combustion device.Under any circumstance, test shows mix flare burner 230 can be handled a large amount of fuel streams very much, and has only the lighter problem of smoldering.
Therefore, the present invention can be arranged to realize purpose of the present invention and be obtained the front describe and its intrinsic each side feature and advantage well.Those skilled in the art can make various modifications, and these modifications are contemplated as falling with in the scope of the invention of claim qualification.
Claims (46)
1. mix flare burner comprises:
The premixed district, it comprises premixing cavity, described premixing cavity have top, bottom, with described top be connected to described bottom sidewall, be located at air intlet in one of described bottom and described sidewall, be located at the air/fuel outlet in the described top;
The auxiliary fuel import, it is used for fuel is injected described premixed district, described auxiliary fuel import is placed in such position with respect to described premixed district, thereby being sprayed into described premixed district from described auxiliary fuel import, fuel can cause air to be carried secretly entering described premixed district, so that fuel and air mixture is formed in the described premixed district and is caused leaving the described air/fuel outlet of described premixing cavity; And
The main fuel outlet, its described top with respect to described premixing cavity is placed in such position, thus the periphery that makes fuel center on the described air/fuel outlet of described premixing cavity sprays from described main fuel outlet.
2. mix flare burner as claimed in claim 1, wherein, described air intlet is arranged in the described bottom of described premixing cavity.
3. mix flare burner as claimed in claim 1, wherein, described main fuel outlet outwards separates from described premixing cavity, carries the space secretly so that air to be provided between them.
4. mix flare burner as claimed in claim 1 also comprises the fuel dividing plate, and its periphery around described premixing cavity arranges that described dividing plate comprises fuel inlet and is communicated with described main fuel outlet fluid.
5. mix flare burner as claimed in claim 4, wherein, described fuel dividing plate and the outlet of described main fuel outwards separate from described premixing cavity, carry the space secretly so that air to be provided between them.
6. mix flare burner as claimed in claim 4, wherein, described dividing plate also is communicated with described auxiliary fuel inlet fluid.
7. mix flare burner as claimed in claim 1 also comprises the fuel feed line, and it is communicated with described auxiliary fuel import and described main fuel outlet fluid, is used for fuel is conducted to described auxiliary fuel import and the outlet of described main fuel.
8. mix flare burner as claimed in claim 1, wherein, described main fuel outlet comprises a plurality of fuel port, they are around the periphery of the described air/fuel outlet of described premixing cavity.
9. mix flare burner as claimed in claim 4, wherein, comprise that the described premixing cavity of described air/fuel outlet, described fuel dividing plate and the outlet of described main fuel have circular cross section respectively, spray so that fuel can export ringwise mode from described main fuel around the periphery of described air/fuel outlet.
10. mix flare burner as claimed in claim 1, wherein, the described sidewall of described premixing cavity comprises inner surface and outer surface, one section of described inner surface is surface, section Anda.
11. mix flare burner as claimed in claim 10, wherein, described auxiliary fuel import is positioned at such position with respect to described premixing cavity, thereby makes fuel be ejected on the surface, described section Anda from described auxiliary fuel import.
12. mix flare burner as claimed in claim 4, wherein, the described sidewall of described premixing cavity comprises inner surface and outer surface, and one section of described inner surface is surface, section Anda.
13. mix flare burner as claimed in claim 12, wherein:
Described air intlet is arranged in the described bottom of described premixing cavity, and comprises that the described premixing cavity of described air intlet, described dividing plate and described auxiliary fuel import have circular cross section respectively;
Extend ringwise around the described inner surface of the described sidewall of described premixing cavity on surface, described section Anda.
14. mix flare burner as claimed in claim 13, wherein, described auxiliary fuel import is positioned at such position with respect to described premixing cavity, thereby fuel is ejected on the surface, described section Anda ringwise from described auxiliary fuel import.
15. mix flare burner as claimed in claim 10, wherein, described inner surface comprises two opposed section, they are surfaces, section Anda, described auxiliary fuel import is positioned at such position with respect to described premixing cavity, thereby makes fuel be ejected on each surface, described section Anda from described auxiliary fuel import.
16. mix flare burner as claimed in claim 1, wherein, the ratio of the length of described premixing cavity and hydraulic pressure internal diameter at about 0.25: 1 to about 4: 1 scope.
17. mix flare burner as claimed in claim 1, wherein, the ratio of the length of described premixing cavity and hydraulic pressure internal diameter be about 1: 1 or below.
18. a mix flare burner comprises:
The premixed district, it comprises premixing cavity, described premixing cavity have top, bottom, with described top be connected to described bottom sidewall, be located at air intlet in the described bottom, be located at the air/fuel outlet in the described top, and the ratio of length and hydraulic pressure internal diameter at about 0.25: 1 to about 4: 1 scope;
The auxiliary fuel import, it is used for fuel is injected described premixed district, described auxiliary fuel import is placed in such position with respect to described premixed district, thereby being sprayed into described premixed district from described auxiliary fuel import, fuel can cause air to be carried secretly entering described premixed district, so that fuel gas and AIR MIXTURES are formed in the described premixed district and are caused leaving the described air/fuel outlet of described premixing cavity;
The main fuel outlet, its described top with respect to described premixing cavity is placed in such position, thus the periphery that makes fuel center on the described air/fuel outlet of described premixing cavity sprays from described main fuel outlet; And
The fuel feed line, it is communicated with described auxiliary fuel import and described main fuel outlet fluid, is used for fuel is conducted to described auxiliary fuel import and the outlet of described main fuel.
19. mix flare burner as claimed in claim 18 wherein, comprises that the described premixing cavity of described air intlet, the outlet of described air/fuel and the outlet of described main fuel have circular cross section.
20. mix flare burner as claimed in claim 18, wherein, described main fuel outlet outwards separates from described premixing cavity, carries the space secretly so that air to be provided between them.
21. mix flare burner as claimed in claim 19, also comprise the annular fuel dividing plate, it arranges that around periphery of described premixing cavity described dividing plate exports fluid with described main fuel and is communicated with, and has top, bottom and described top is connected to the sidewall of described bottom.
22. mix flare burner as claimed in claim 21, wherein, described main fuel outlet is attached to the described top of described fuel dividing plate, and comprises a plurality of fuel port of the periphery extension of the described air/fuel outlet that centers on described premixing cavity.
23. mix flare burner as claimed in claim 22, wherein, described fuel dividing plate and the outlet of described main fuel outwards separate from described premixing cavity, carry the space secretly so that air to be provided between them.
24. mix flare burner as claimed in claim 18, wherein, the ratio of the length of described premixing cavity and hydraulic pressure internal diameter be about 1: 1 or below.
25. mix flare burner as claimed in claim 24, wherein, described auxiliary fuel import separates below the described air intlet of described premixing cavity.
26. mix flare burner as claimed in claim 18, wherein, the described air/fuel outlet of described premixing cavity separates on described main fuel outlet.
27. a ground flare, the enclosure wall that comprises a plurality of mix flare burners, extends around mix flare burner, the fuel supply lines that is used to supply fuel to mix flare burner, wherein, at least one mix flare burner comprises:
The premixed district, it comprises premixing cavity, described premixing cavity have top, bottom, with described top be connected to described bottom sidewall, be located at air intlet in one of described bottom and described sidewall, be located at the air/fuel outlet in the described top;
The auxiliary fuel import, it is used for fuel is injected described premixed district, described auxiliary fuel import is placed in such position with respect to described premixed district, thereby being sprayed into described premixed district from described auxiliary fuel import, fuel can cause air to be carried secretly entering described premixed district, so that fuel gas and AIR MIXTURES are formed in the described premixed district and are caused leaving the described air/fuel outlet of described premixing cavity; And
The main fuel outlet, its described top with respect to described premixing cavity is placed in such position, thus the periphery that makes fuel center on the described air/fuel outlet of described premixing cavity sprays from described main fuel outlet.
28. ground flare as claimed in claim 27, wherein, described air intlet is arranged in the described bottom of described premixing cavity.
29. ground flare as claimed in claim 27, wherein, described main fuel outlet outwards separates from described premixing cavity, carries the space secretly so that air to be provided between them.
30. ground flare as claimed in claim 27, wherein, described mix flare burner also comprises the fuel dividing plate, and its periphery around described premixing cavity arranges that described dividing plate comprises fuel inlet and is communicated with described main fuel outlet fluid.
31. ground flare as claimed in claim 30, wherein, described fuel dividing plate and the outlet of described main fuel outwards separate from described premixing cavity, carry the space secretly so that air to be provided between them.
32. ground flare as claimed in claim 30, wherein, described dividing plate also is communicated with described auxiliary fuel inlet fluid.
33. ground flare as claimed in claim 27 also comprises the fuel feed line, it is communicated with described auxiliary fuel import and described main fuel outlet fluid, is used for fuel is conducted to described auxiliary fuel import and the outlet of described main fuel.
34. ground flare as claimed in claim 27, wherein, described main fuel outlet comprises a plurality of fuel port, and they are around the periphery of the described air/fuel outlet of described premixing cavity.
35. ground flare as claimed in claim 30, wherein, comprise that the described premixing cavity of described air/fuel outlet, described fuel dividing plate and the outlet of described main fuel have circular cross section respectively, thereby fuel sprays ringwise from described main fuel outlet around the periphery that described air/fuel exports.
36. ground flare as claimed in claim 27, wherein, the described sidewall of described premixing cavity comprises inner surface and outer surface, and one section of described inner surface is surface, section Anda.
37. ground flare as claimed in claim 36, wherein, described auxiliary fuel outlet is positioned at such position with respect to described premixing cavity, thereby makes fuel be ejected on the surface, described section Anda from described auxiliary fuel outlet.
38. ground flare as claimed in claim 30, wherein, the described sidewall of described premixing cavity comprises inner surface and outer surface, and one section of described inner surface is surface, section Anda.
39. ground flare as claimed in claim 38, wherein:
Described air intlet is arranged in the described bottom of described premixing cavity, and comprises that the described premixing cavity of described air intlet, described fuel dividing plate and described auxiliary fuel import have circular cross section respectively;
Extend ringwise around the described inner surface of the described sidewall of described premixing cavity on surface, described section Anda.
40. ground flare as claimed in claim 39, wherein, described auxiliary fuel import is positioned at such position with respect to described premixing cavity, thereby fuel is ejected on the surface, described section Anda ringwise from described auxiliary fuel import.
41. ground flare as claimed in claim 36, wherein, described inner surface comprises two opposed section, they are surfaces, section Anda, described auxiliary fuel import is positioned at such position with respect to described premixing cavity, thereby makes fuel be ejected on each surface, described section Anda from described auxiliary fuel import.
42. a method of utilizing mix flare burner flame combustion fuel wherein, will be sprayed into the combustion zone by the fuel outlet of the fuel of flame combustion by burner and lighted, and to produce flame envelope and combustion fuel, it is characterized in that, comprise:
A part is introduced the premixed district of described burner by this way with burned fuel, enter described premixed district and in described premixed district, produce air and fuel mixture thereby cause air to be carried secretly; And
Described air and fuel mixture are sprayed into the middle body of described flame envelope from described premixed district.
43. method as claimed in claim 42, wherein, the air capacity of being carried secretly the middle body that enters described premixed district and spray into described flame envelope the required air stoichiometry amount of the fuel combustion of supporting to introduce described premixed district about 125% to about 300% scope.
44. method as claimed in claim 43, wherein, the air capacity of being carried secretly the middle body that enters described premixed district and spray into described flame envelope the required air stoichiometry amount of the fuel combustion of supporting to introduce described premixed district about 150% to about 300% scope.
45. method as claimed in claim 42, wherein, the fuel quantity of introducing described premixed district will by the total amount of fuel of described mix flare burner flame combustion about 5% to about 50% scope.
46. method as claimed in claim 45, wherein, the fuel quantity of introducing described premixed district will by the total amount of fuel of described mix flare burner flame combustion about 10% to about 30% scope.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/540,362 | 2006-09-29 | ||
| US11/540,362 US20080081304A1 (en) | 2006-09-29 | 2006-09-29 | Partial pre-mix flare burner and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101153711A true CN101153711A (en) | 2008-04-02 |
Family
ID=38835040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101531474A Pending CN101153711A (en) | 2006-09-29 | 2007-09-28 | Partial pre-mix flare burner and method |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20080081304A1 (en) |
| EP (1) | EP1906089A2 (en) |
| JP (1) | JP2008116195A (en) |
| KR (1) | KR20080029901A (en) |
| CN (1) | CN101153711A (en) |
| AR (1) | AR062920A1 (en) |
| AU (1) | AU2007204081A1 (en) |
| BR (1) | BRPI0703675A (en) |
| CA (1) | CA2600248A1 (en) |
| MX (1) | MX2007011586A (en) |
| TW (1) | TW200819678A (en) |
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2006
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-
2007
- 2007-08-08 AU AU2007204081A patent/AU2007204081A1/en not_active Abandoned
- 2007-08-10 TW TW096129728A patent/TW200819678A/en unknown
- 2007-09-06 CA CA002600248A patent/CA2600248A1/en not_active Abandoned
- 2007-09-10 EP EP07253574A patent/EP1906089A2/en not_active Withdrawn
- 2007-09-20 MX MX2007011586A patent/MX2007011586A/en not_active Application Discontinuation
- 2007-09-20 AR ARP070104160A patent/AR062920A1/en unknown
- 2007-09-26 BR BRPI0703675-2A patent/BRPI0703675A/en not_active IP Right Cessation
- 2007-09-28 CN CNA2007101531474A patent/CN101153711A/en active Pending
- 2007-09-28 KR KR1020070098088A patent/KR20080029901A/en not_active Application Discontinuation
- 2007-09-28 JP JP2007254382A patent/JP2008116195A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680454A (en) * | 2011-09-20 | 2012-09-19 | 深圳市爱诺实业有限公司 | Second-order differential flame emission spectrometer |
| CN102680454B (en) * | 2011-09-20 | 2014-06-18 | 深圳市爱诺实业有限公司 | Second-order differential flame emission spectrometer |
| CN107152679A (en) * | 2016-03-03 | 2017-09-12 | 中国海洋石油总公司 | Gas spray head and burner |
| CN107300172A (en) * | 2017-08-17 | 2017-10-27 | 上海钜荷热力技术有限公司 | A kind of full premix surface combustion burner with multi-point spark and detecting system |
| CN109798518A (en) * | 2019-03-29 | 2019-05-24 | 烟台龙源电力技术股份有限公司 | Low NO and combustion system |
| CN109798518B (en) * | 2019-03-29 | 2024-03-15 | 烟台龙源电力技术股份有限公司 | Low nitrogen burner and combustion system |
| CN112283701A (en) * | 2020-12-29 | 2021-01-29 | 烟台工程职业技术学院(烟台市技师学院) | Premixed mixed fuel burner |
| CN112283701B (en) * | 2020-12-29 | 2021-04-06 | 烟台工程职业技术学院(烟台市技师学院) | Premixed mixed fuel burner |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2007204081A1 (en) | 2008-04-17 |
| US20080081304A1 (en) | 2008-04-03 |
| BRPI0703675A (en) | 2008-06-03 |
| CA2600248A1 (en) | 2008-03-29 |
| TW200819678A (en) | 2008-05-01 |
| JP2008116195A (en) | 2008-05-22 |
| KR20080029901A (en) | 2008-04-03 |
| AR062920A1 (en) | 2008-12-17 |
| MX2007011586A (en) | 2008-10-28 |
| EP1906089A2 (en) | 2008-04-02 |
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