CN105164470A - Apparatus and method for minimizing smoke formation in flaring stack - Google Patents
Apparatus and method for minimizing smoke formation in flaring stack Download PDFInfo
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- CN105164470A CN105164470A CN201480024822.1A CN201480024822A CN105164470A CN 105164470 A CN105164470 A CN 105164470A CN 201480024822 A CN201480024822 A CN 201480024822A CN 105164470 A CN105164470 A CN 105164470A
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- gas
- flank
- waste gas
- coanda
- deflector
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/15004—Preventing plume emission at chimney outlet
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
An apparatus and method for minimizing smoke formation in the operation of a flaring stack. The apparatus includes a generally annular gas deflector having an outer surface for deflecting the waste gas therealong. A plurality of lobes extend radially from the deflector to provide improved mixing between the waste gas and combustion air during combustion to reduce smoke formation.
Description
Prioity claim
This application claims the priority of the US application serial No. 14/266,997 and 14/266,992 that on May 1st, 2014 submits to, the rights and interests of the U.S. Provisional Application sequence number 61/819,189 and 61/819,192 of these application requirements submission on May 3rd, 2013.
Technical field
The application relates to a kind of for making the smog in flare stack (flaringstack) form minimized equipment.
Background technology
Traditionally utilize flare apparatus to burn and discharged fuel gas.Flare apparatus to be usually arranged on flare stack and in place in production, to smelt and in processing factory, to process combustible exhaust or other easy gas-flow, this air-flow is released due to any reason, include but not limited to exhaust, shut down, fault and/or emergency.Flare stack is mainly used to discharge unwanted waste gas streams from facility.
Usual hope is burning combustible gases when not producing smog, and the smog that rules and regulations reduce between main combustion period produces.
For the formation reducing smog between main combustion period, a kind of method adopted comprises the waste gas streams making to burn and mixes with surrounding air and the oxidation of combustible exhaust is maximized, to prevent the generation of smog.The other method used comprises such as increases oxidation, to limit the formation of smog by injector to combustion zone supply steam.In some applications, environment for use air and steam introduce the formation reducing smog further together.
When enough surrounding airs or surrounding air can be used to contact with combustible exhaust gas with steam, this mixture can smokelessly burn.For typical flare apparatus, there is the limited amount air that can be used for mixing with waste gas, therefore there is limited smokeless ability.
Propose the smokeless combustion that plurality of devices and process improve the fuel gas from torch.Such as, the U.S. Patent No 3,833,337 authorizing the people such as Desty and the U.S. Patent No 8,337,197 authorizing the people such as Poe propose coanda (Coanda) end using tulip shape.In the torch with high flow rate and pressure, use coanda end, stick on the surface to cause waste gas.The negative pressure caused by Coanda effect and viscous force cause being taken out by fluid with thinner film leaning against on the surface, this allow near fluid (such as surrounding air) effectively mix with this fluid stream.Poe describes to realize Coanda effect, and the surface of Coanda surface should be enough level and smooth.
Although current equipment and method have improved the smokeless combustion of waste gas streams, based on the consideration of regulation and environment, it is desirable to reduce smog formation volume further.
Summary of the invention
According on the one hand, provide a kind of equipment making the formation of smog minimized in the operation of flare stack.This equipment comprises the gas deflector of annular substantially, and this gas deflector has for making waste gas carry out along it the outer surface that deflects.This equipment also comprises multiple blade, this blade from gas deflector radially, to provide the mixing of improvement between main combustion period between waste gas and combustion air.According to a kind of scheme, blade comprises the isolated flank vertical substantially of circumference.Gas deflector can comprise the basin body (bowl) of the tulip shape with Coanda surface.
According on the other hand, provide a kind of for burnt gas to reduce the method for the formation of smog.The method comprises makes waste gas advance along the outer surface of gas deflector annular substantially, and this gas deflector comprises multiple blade extended from its outer surface radial direction.The method also comprise by surrounding air toward the outside area suction to mix with waste gas.The method also comprises burnt gas when lighting waste gas to be formed at the smog with minimizing.
Accompanying drawing explanation
Fig. 1 is the perspective view comprising the equipment of the gas deflector of multiple supporting arm and multiple correspondence according to various embodiment;
Fig. 2 is the perspective view with the supporting arm of the equipment of gas deflector according to various embodiment;
Fig. 3 is the sectional view of the supporting arm of Fig. 2, and gas deflector in the position supporting reduced thereon;
Fig. 4 is the partial sectional view of the supporting arm of Fig. 2, and wherein gas deflector is in raised position;
Fig. 5 is the top view of the gas deflector of Fig. 2;
Fig. 6 is the side sectional view of gas deflector along line A-A of Fig. 5;
Fig. 7 is the side sectional view of gas deflector along line B-B of Fig. 6;
Fig. 8 is the perspective view with the supporting arm of the equipment of gas deflector according to another program.
One of skill in the art will appreciate that element in figure is in order to simplify with clear and illustrate, not necessarily draws in proportion.Such as, the size of some elements in figure and/or relative position can be exaggerated relative to other element, to contribute to improving the understanding to various embodiment of the present invention.Equally, in order to contribute to these embodiments of the present invention less block watch, useful or the required general and element of easy understand in commercially feasible embodiment is not shown usually.Also it is to be appreciated that some behavior and/or step can be described according to specific order of occurrence, however person skilled in art will be appreciated that in fact do not need this about order specificity.It will also be understood that, except the different specific meanings otherwise proposed in this article, the term used in this article and words and phrases have the common art-recognized meanings that those skilled in the art give these terms and words and phrases.
Detailed description of the invention
The equipment proposed according to various aspect in this article and method relate to waste gas reduces smog in flare stack formation between main combustion period.This equipment can use together with flare stack, such as, for waste gas or other gas stream burning being used in the smelting in air or production facility.As used in this article, term " waste gas " refers to any easy gas-flow burnt by flare stack, includes but not limited to less desirable air-flow, at the product stream of shutting down or burn during emergency and other stream.
With reference now to Fig. 1 and 2, provide a kind of equipment 2 for burner exhaust stream according to various aspect.Equipment 2 comprises gas deflector 4, and gas deflector 4 is for making waste gas along its surface 6 deflection.Equipment 2 can also comprise the supporting arm 8 for gas deflector 4 being supported thereon.Waste gas can be flow in gas deflector 4 by supporting arm 8.Thus, supporting arm 8 can have the exhaust steam passage 10 formed wherein, as shown in Figure 3, so that waste gas is by wherein flowing.Be provided with the waste gas outlet 12 for waste gas to be guided to gas deflector 4 from exhaust steam passage 10.As shown in Figure 3-4 and as described further below, outlet 12 can comprise the annular opening 14 between supporting arm 8 and gas deflector 4, thus waste gas flows by opening 14 with along the outer surface 6 of gas deflector.
Waste gas deflector comprises the multiple blades 16 extended from this waste gas deflector radial direction.Thus, along with the outer surface of waste gas along gas deflector 4 flows, this gas on blade 16 and between flowing.It has been determined that in gas deflector 4, to comprise the radial blade 16 extended improves waste gas streams and surrounding air in the mixing of flare stack duration of work, causes the minimizing of the amount of smoke produced between main combustion period.Also it has been determined that comprise the as described herein radial blade 16 extended provide the flame temperature of reduction and minimizing for such as NO
xthe unwanted byproduct of discharge is to the discharge in air.According to one side, blade comprises multiple flank 18 be vertically oriented substantially, and flank 18 is spaced apart around gas deflector 4 circumference, thus gas flows along flank with by the passage 20 formed between adjacent flank 18.
According to various aspect, supporting arm 8 is arranged for supporting gas deflector 4 thereon.Supporting arm 8 can also comprise gas passage 10, flows to gas deflector 4 from source of the gas for making the waste gas that will burn.In a kind of scheme shown in Fig. 1, equipment 2 can comprise multiple supporting arms 8 of the multiple gas deflector 4 of supporting.Contrary with having single large gas deflector, the size of each gas deflector 4 can be reduced by this way.Contrary with single large gas deflector, this can by increase be used in multiple gas deflector 4 each in improve the ability of smog free combustion with the amount of the air of gas and vapor permeation.
Supporting arm 8 can extend from central air chamber 22 as shown in Figure 1.As shown in the figure, a supporting arm 8 upwards extends from the top of air chamber 22, and additional supporting arm 8 extends with the lateral parts 24 of an inclination angle from air chamber 22, and extends vertically at its sweep 26 place substantially.In one example, supporting arm 8 vertical portion 28 with vertical direction in be less than 5 degree (in another example with vertical axis in being less than 3 degree, in another example with vertical direction in being less than 1 degree) angle extend vertically.In another example again, the vertical portion 28 of supporting arm 8 extends vertically.
Supporting arm 8 can comprise gas passage 10 as shown in Figure 3, and gas passage 10 flows in gas deflector 4 for making waste gas pass through supporting arm 8.In a kind of scheme, as shown in Figure 3, gas passage 10 can comprise the hollow passageway by supporting arm 8.Thus, support arm 8 to be formed by the pipe hollow being substantially provided with path 10.This pipe can be cylindrical or other suitable configuration as shown in Figure 3.
According to one side, supporting arm 8 comprises the upper seating potion 30 for gas deflector 4 being supported thereon.In a kind of scheme, upper seating potion 30 comprises edge for supporting gas deflector 4 or flange 32.As shown in Figure 3, flange 32 can comprise the flange of annular substantially, this flange extends radially outwardly from the upper seating potion 30 of supporting arm, to provide upper seat surface 34, as hereafter by further describing, this upper seat surface 34 also may be used for the flowing guiding gas along deflector 4.
As mentioned above, gas deflector 4 is comprised according to the equipment 2 of various aspect.In the preferred form of one, gas deflector 4 comprises the gas deflector basin body 36 with Coanda surface 38 as shown in the figure.Coanda basin body 36 can have tulip shape configuration as shown in Figure 7, has low portion 40 that is less horizontal or that tilt a little, upper part 42 that is vertical or that tilt and the convex portions 44 between low portion 40 and upper part 42.The remainder that gas deflector completes this description is used as with reference to by coanda basin body 36.Those skilled in the art are known and understand coanda basin body substantially, and known coanda basin body produces " Coanda effect ", and wherein, the gas flowed along its outer surface tends to along this surface, and suck gas or the air of surrounding.In a kind of scheme, coanda basin body has the cross section of automatic adjustment along the plane that the longitudinal axis 46 with this basin body is orthogonal, although basin body 36 can also comprise other suitable cross sectional configuration, and such as oval or polygon.
According to one side, coanda basin body 36 comprises multiple blade 16 extended radially outwardly from its outer surface 38.As shown in the figure, blade 16 can comprise multiple flank 18 vertical substantially, and flank 18 is spaced apart around outer surface 38 circumference of basin body.In a kind of scheme, flank extends radially outwardly from the outer surface 38 (or bottom surface 20 of passage) of coanda basin body.As used in this article, phrase " total outer surface " refers to the outer surface of the whole outer surfaces formation along gas deflector, comprise the outer surface along coanda basin body 36, flank 18 and passage 20 in a kind of example, thus " total outer surface " of the part with flank of coanda basin body 36 has and does not have than correspondence the surface area that the outer surface of the coanda basin body of flank is large.
According to a kind of scheme, flank 18 extends substantially vertically along the outer surface 38 of coanda basin body.Be to be understood that, as described herein, when looking from front, flank 18 extends substantially vertically, and when the upper part 42 of basin body 36 as shown in Figure 6 tilts, when looking from side section (is 90 degree with front namely as shown in the side sectional view of Fig. 6), the flank vertically extended can tilt towards the longitudinal axis 46 of basin body 36 similarly.Based on this point, by a kind of scheme, when looking from front as shown in Figure 2, flank has axis 48 vertical substantially, this axis in a kind of example with vertical direction in being less than 5 degree, be less than 2 degree in another example, and in another example with vertical direction in being less than 1 degree.
Flank circumference is spaced apart, thus forms the passage 20 of multiple correspondence between adjacent flank 18, as shown in Figure 2.Passage 20 extends vertically substantially between flank 18, and can have multiple different shape and configuration.Passage 20 comprises passage bottom 50 at its base portion.Passage bottom can flush with the outer surface 36 of coanda basin body, or can raise relative to this outer surface 36 or cave in.
Flank 18 can have less constant radial contour (i.e. the outer surface 38 of interval from basin body and/or the flank of passage bottom 50 extension).Selectively, flank 18 can have the radial contour of change as shown in Figure 6.By a kind of scheme, as seen in figs, flank 18 is from the rib portion 52 compared with bottom to (raised) rib portion 54 raised change (taper) in wedged cone shaped gradually.Thus, in wedged cone shaped, the low portion 52 of change can slightly raise about basin body surface 36 or flush with it gradually, and to provide level and smooth transitional surface, the gas of upwards advancing along basin body surface can flow on this transitional surface.Flank 18 can also comprise the upper rib part 56 of the change in wedged cone shaped gradually, to provide level and smooth flowing when waste gas and combustion air mixture leave Coanda surface for it.Should be understood that, the radial flank extended can extend relative to the outer surface of coanda basin body and/or relative to passage radial direction.Thus, can such as by arranging flank along the outer surface of coanda basin body or by forming passage or recess thus square one-tenth flank forms flank on that channel in coanda basin body.
Flank 18 can have constant circumferential width or the width of change around the periphery of coanda basin body 36, as shown in figures 2 and 5.Similarly, passage 20 can have circumferential width that is constant or change.Typically, when coanda basin body as shown in the figure comprise internally gradually in wedged cone shaped change upper part 42, at least one in flank and passage by vicissitudinous for tool width, to produce the girth upwards reduced.
According to one side, flank 18 can have the sidewall 58 of the inclination extended between flank top section 60 and passage bottom 50, as shown in reference to figure 5 the best.The sidewall 58 tilted can be plane substantially, can be maybe bending or is otherwise formed.By reducing the number of degrees of the acute angle between flank and passage, the sidewall of inclination provides level and smooth surface, and gas can flow on a surface.
When being not intended to bound by theory, should believe, for coanda basin body 36 increases the total surface area that flank 18 adds coanda basin body 36, to improve the mixing of waste gas/combustion air, and not providing the corresponding increase of the overall diameter to basin body.By this way, coanda basin body 36 can be advantageously made to keep less, simultaneously for suction combustion air provides enough surface areas with the formation mixed with waste gas and reduce smog.
For this reason, according to one side, the coanda basin body with flank has higher girth (as shown in Figure 5) and the ratio of outer radius 62.As used in this article, outer radius refers to the distance between basin body longitudinal axis 46 and flank top section 60.Such as, traditional do not have the girth (Zhou Bianchang) of the coanda basin body of flank and the ratio of outer radius to be 2 π r/r=2 π.In one example, the girth of the basin body with flank described in this article and odds ratio 2 π of outer radius large.In another example, the ratio of girth and outer radius between 6.5 and 20, in another example between 7.5 and 16, in another example again between 8.5 and 12.
According to one side, flank 18 can be formed along the whole outer surface 38 of coanda basin body 36.Thus, add the surface area of whole basin body 36, thus improve the mixing between waste gas and combustion air along total outer surface as above.
According to another aspect, flank 18 can extend along one or more parts of coanda basin body 36, but less than its whole outer surface 38, thus a part for gas deflector does not have flank, and provides the surface of relative smooth to air-flow.Such as, as shown in Figure 7, low portion 40 and/or the mid portion 44 of coanda basin body 36 can not have flank, and upper part 42 comprises flank.Thus, gas can flow, flow along the mid portion 44 of convex surface and arrive the upper part 42 with flank by the low portion 40 better along coanda basin body 36 before flowing on flank 18 and between flank 18.In addition, the low portion 40 of coanda basin body and/or mid portion 44 is made not to have flank to provide the lower seating portion of coanda basin body 36, thus when basin body 36 is in seated position as shown in Figure 3, the bearing part of this coanda basin body substantially with upper seating potion 30 close contact of supporting arm, to reduce the amount of the waste gas flowed through wherein.In a kind of example, between 5 to 50 percent of the bottom of coanda basin body, do not have flank, upper part comprises flank.In another example, between 10 to 40 percent of the bottom of coanda basin body, do not have flank, upper part comprises flank.In another example, as shown in Figure 8, base section can comprise flank, and at least mid portion and/or top section do not have flank.
As shown in Figures 2 and 8, coanda basin body can comprise the flank 18 of varying number and size, maximize to make the mixing of air/waste gas.Such as, the quantity selecting the flank extended around coanda basin body 36 circumference can be useful, with provide the surface area of increase and to gas/air mixing relevant improvement, still ensure that gas will flow smoothly during operation in total surface area simultaneously.Fig. 2 illustrates a kind of example comprising the relatively wide flank of lesser amt of coanda basin body, and Fig. 8 illustrates another example, wherein, uses the narrower flank 18 of a greater number.Based on this point, in a kind of example, the ratio of the combination circumferential width of the combination circumferential width of one or more flank 18 and the multiple passages 12 between flank 18 between 0.5 and 5, in another example between 1 and 3.In another example, the ratio of the flank radial height above passage bottom and the outer radius of basin body in a kind of example between 0.01 and 0.2, in another example between 0.03 and 0.2.
According on the one hand, be provided with the gas vent 12 for being guided to by waste gas on the outer surface of coanda basin body.As in Figure 2-4, gas vent 12 can comprise the opening 14 of the annular substantially of the exhaust steam passage 10 formed around outer surface 38, thus waste gas can be flowed along outer surface by this opening.Annular opening 14 can comprise shape or such as oval or other shape polygonal of opposing circular.By a kind of scheme, annular opening comprises single annular opening, but can also comprise the multiple openings formed around coanda basin body 36.Annular opening 14 can be formed by the gap between the upper seating potion 30 and the low portion 40 of coanda basin body of supporting arm, thus the waste gas of gas coming through path 10 is left by opening, and flows along outer surface 38.
In a kind of scheme, provide waste gas with relatively high pressure and flow rate.Equipment disclosed herein can be suitable for preferably with the waste gas of high flow rate flowing, because this waste gas through Coanda surface 38 and flank 18, and will aspirate a large amount of combustion air for the smog formation mixed and reduce.
In a kind of scheme, coanda basin body 36 can move between seated position as shown in Figure 3 and raised position as shown in Figure 4.At seated position, the bearing part 30 of the bearing part contact supporting arm of coanda basin body.As mentioned above, at seated position, coanda basin body 36 and supporting arm 8 close contact, thus annular opening 14 is in the close position, and be restricted by gas flowing wherein.At raised position, the seat part of coanda basin body is divided and is raised relative to the bearing part 30 in supporting arm portion, to form gap between which, passes through wherein to flow to allow waste gas to provide annular opening 14.
By a kind of scheme, coanda basin body 36 is biased to closing position, but high pressure exhaust gas contact coanda basin body 36, cause its raised position shown in Fig. 4 of being picked up, thus waste gas can through annular opening 14.Coanda basin body 36 can be biased to closing position by spring 64 as shown in Figure 3.Bar 66 is connected to coanda basin body 36 and spring 64, thus spring 64 is towards seated position drive rod 66 with drive coanda basin body 36 thus.
According to each side, during operation, the waste gas that burn flows by gas passage with by annular opening 14.In the moveable situation of coanda basin body 36, waste gas can make coanda basin body move to raised position, thus gas can leave annular opening 14 and along total outer surface flowing of coanda basin body 36.Along with waste gas flows along outer surface, combustion air (such as surrounding air) is sucked in waste gas and also mixes with it.Waste gas is through flank 18 and by the passage 20 between flank 18.This waste gas is lighted and is burnt, and the smog with minimizing is formed.
Description above and example are to the invention is intended to be schematic and do not limit its scope.Although have illustrated and described specific embodiments of the invention, but should will be appreciated that, those skilled in the art will envision that multiple change and change, and claim of enclosing is intended to cover all these fall change within the spirit and scope of the present invention and changes.
A kind of embodiment of the present invention relates to and a kind ofly forms minimized equipment for making at the operating smog of flare stack, and this equipment comprises: the gas deflector of annular substantially, and this gas deflector has for making waste gas carry out along it the outer surface that deflects; Multiple blade, this blade from the outer surface of deflector substantially radially out, to provide the mixing of improvement between main combustion period between waste gas and combustion air.Blade can comprise the isolated flank vertical substantially of circumference, and this flank extends from the outer surface radial direction of gas deflector.The girth of the part with flank of this basin body and should can between 6.5 and 20 with the ratio of the overall diameter of the part of flank.Gas deflector can comprise the basin body of the tulip form with Coanda surface.Flank can the upper part radial direction from basin body above the convex portions of Coanda surface extend.The middle convex portions of basin body can be level and smooth substantially and do not have flank.Flank can from the upper part of basin body extend to vertically substantially the middle convex portions of basin body at least partially.From flush with outer surface substantially compared with the rib portion of the rising of rib portion above outer surface of bottom, this flank can about outer surface radially gradually in wedged cone shaped change.This flank can comprise the sidewall of inclination, and this sidewall extends to the top section of flank from the passage between flank.The ratio of the combination circumferential width of the combination circumferential width of one or more flank and the multiple passages between flank can between 0.5 and 5.The ratio of the outer radius of the flank radial height of flank above passage bottom and gas deflector can between 0.01 and 0.2.
Another embodiment of the present invention relates to and a kind ofly forms minimized equipment for making at the operating smog of flare stack, and this equipment comprises: supporting arm, and this supporting arm has the exhaust steam passage hollow substantially for being connected to exhaust gas source; The gas deflector of annular substantially, this gas deflector has for making waste gas carry out along it the outer surface that deflects; Waste gas outlet between gas deflector and supporting arm; With multiple blade, this blade from the outer surface of gas deflector substantially radially, to provide the mixing of improvement between main combustion period between waste gas and combustion air.This gas deflector can comprise coanda basin body, and this outlet comprises the annular opening between the upper seating potion and the Coanda surface of coanda basin body of supporting arm.This equipment can also comprise the moveable connector between coanda basin body and supporting arm, thus coanda basin body can move between seated position and raised position, at seated position, coanda basin body is supported by upper seating potion, at raised position, coanda basin body raises from upper seating potion, to form annular opening between upper seating potion and the Coanda surface of coanda basin body.This moveable connector can comprise spring, and this spring construction becomes seated position coanda basin body being biased toward reduction.The bearing part of coanda basin body can not have flank, with when coanda basin body is in seated position the bearing part of coanda basin body and supporting arm seat part divide between form level and smooth adaptation.Multiple blade can comprise the isolated flank vertical substantially of circumference, and this flank extends from the outer surface radial direction of coanda basin body.The girth of the part with flank of coanda basin body and should can between 7.5 and 16 with the ratio of the overall diameter of the part of flank.Multiple supporting arms, the gas deflector of multiple correspondence and the multiple blades from the extension of multiple gas deflector radial direction that this equipment can also comprise air chamber, extend from air chamber, wherein have annular opening between multiple supporting arm and the gas deflector of multiple correspondence.
Another embodiment of the present invention relate to a kind of for burnt gas to reduce the method for the formation of smog, the method comprises: waste gas is advanced along the outer surface of gas deflector annular substantially, and this gas deflector comprises the multiple blades extended from its outer surface radial direction; By surrounding air area suction toward the outside, to mix with waste gas; With light waste gas.Make waste gas advance to comprise along outer surface waste gas is advanced on the isolated flank vertical substantially of multiple circumference, this flank extends from outer surface radial direction.The method can also comprise the passage making waste gas between vertical flank.The method can also comprise makes waste gas advance along the sloped sidewall extending to flank top section from passage.The method can also comprise makes waste gas advance on the Coanda surface of gas deflector.Waste gas is advanced on Coanda surface can comprise waste gas is advanced on the isolated flank vertical substantially of multiple circumference, this flank extends from Coanda surface radial direction.The method can also comprise make waste gas Coanda surface bottom do not have the part of flank is advanced, advancing with in the part of flank then on Coanda surface top.Waste gas is advanced on the outer surface can comprise waste gas is advanced on an outside surface, the ratio of the overall diameter of the girth of the part with flank of the gas deflector that this outer surface has and the part with flank of gas deflector is between 6.5 and 20.Waste gas is advanced on the outer surface can comprise waste gas is advanced on an outside surface, the ratio of the overall diameter of the girth of the part with flank of the gas deflector that this outer surface has and the part with flank of gas deflector is between 7.5 and 16.
Another embodiment relate to a kind of for burnt gas to reduce the method for the formation of smog, the method comprises: make waste gas through supporting arm inner passage; Make waste gas through the annular gas passage between supporting arm and gas deflector annular substantially; Waste gas is made to advance along the outer surface of gas deflector and advance at the blade extended from the gas deflector radial direction of annular; With light waste gas.The method can also comprise aspirates surrounding air towards gas deflector, to mix and to reduce during waste gas burning the formation of smog with waste gas.Gas deflector can comprise the coanda basin body of tulip form substantially, makes waste gas advance to comprise along outer surface waste gas is advanced on the Coanda surface of coanda basin body.The method can also comprise makes gas deflector move to the open position of rising from lower seated position, to provide annular opening, to allow waste gas through annular opening.The method can also comprise makes gas deflector move to lower seated position, with closed annular opening from the open position raised.Make gas deflector move to lower seated position can comprise the level and smooth bearing part without flank making gas deflector and contact, to provide close contact substantially between which with the upper seating potion of supporting arm.The closing position making gas deflector move to reduction from the open position raised can comprise the exhaust gas pressure using spring gas deflector to be biased toward lower position and to reduce exhaust steam passage.
Claims (10)
1. in the operation of flare stack, make the equipment that the formation of smog is minimized, this equipment comprises:
The gas deflector of annular substantially, this gas deflector has for making waste gas carry out along it the outer surface that deflects;
Multiple blade, this blade from the outer surface of deflector substantially radially out, to provide the mixing of improvement between main combustion period between waste gas and combustion air.
2. equipment according to claim 1, wherein, blade comprises the isolated flank vertical substantially of circumference, and these flanks extend from the outer surface radial direction of gas deflector.
3. equipment according to claim 2, wherein, the girth of the part with flank of basin body and this ratio with the overall diameter of the part of flank are between 6.5 and 20.
4. equipment according to claim 2, wherein, gas deflector comprises the basin body of the tulip form with Coanda surface.
5. equipment according to claim 1, wherein, from the rib portion of the rising of rib portion above outer surface lower substantially flushed with outer surface, described flank is relative to the outer surface radially change in wedged cone shaped gradually.
6. for burnt gas to reduce a method for the formation of smog, the method comprises:
Waste gas is advanced along the outer surface of gas deflector annular substantially, and this gas deflector comprises the multiple blades extended out from its outer surface radial direction;
By surrounding air area suction toward the outside, to mix with waste gas; With
Light waste gas.
7. method according to claim 6, wherein, makes waste gas advance to comprise along outer surface waste gas is advanced on the isolated flank vertical substantially of multiple circumference, and these flanks extend from outer surface radial direction.
8. method according to claim 7, also comprises the passage making waste gas between vertical flank.
9. method according to claim 8, also comprises and waste gas is advanced along the sloping side wall surfaces extending to flank top section from passage.
10. method according to claim 6, also comprises and waste gas is advanced on the Coanda surface of gas deflector.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361819189P | 2013-05-03 | 2013-05-03 | |
| US201361819192P | 2013-05-03 | 2013-05-03 | |
| US61/819,192 | 2013-05-03 | ||
| US61/819,189 | 2013-05-03 | ||
| US14/266,992 | 2014-05-01 | ||
| US14/266,992 US20140329186A1 (en) | 2013-05-03 | 2014-05-01 | Apparatus and method for minimizing smoke formation in a flaring stack |
| US14/266,997 | 2014-05-01 | ||
| US14/266,997 US20140329190A1 (en) | 2013-05-03 | 2014-05-01 | Apparatus and method for minimizing smoke formation in a flaring stack |
| PCT/US2014/036498 WO2014179650A1 (en) | 2013-05-03 | 2014-05-02 | Apparatus and method for minimizing smoke formation in a flaring stack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105164470A true CN105164470A (en) | 2015-12-16 |
Family
ID=51843964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480024822.1A Pending CN105164470A (en) | 2013-05-03 | 2014-05-02 | Apparatus and method for minimizing smoke formation in flaring stack |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN105164470A (en) |
| CA (1) | CA2909879A1 (en) |
| WO (1) | WO2014179650A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623651A (en) * | 2021-08-18 | 2021-11-09 | 江苏中圣高科技产业有限公司 | Self-smoke-eliminating ground torch combustion system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8332747D0 (en) * | 1983-12-08 | 1984-01-18 | British Petroleum Co Plc | Flare |
| EP0153866B1 (en) * | 1984-03-02 | 1989-03-22 | The British Petroleum Company p.l.c. | Flare |
| DE60019264T2 (en) * | 1999-01-04 | 2006-02-16 | Allison Advanced Development Co., Indianapolis | EXHAUST MIXING DEVICE AND DEVICE WITH SUCH A DEVICE |
| JP4724986B2 (en) * | 2001-08-29 | 2011-07-13 | 株式会社Ｉｈｉ | Lobe mixer |
| US7878798B2 (en) * | 2006-06-14 | 2011-02-01 | John Zink Company, Llc | Coanda gas burner apparatus and methods |
-
2014
- 2014-05-02 CA CA2909879A patent/CA2909879A1/en not_active Abandoned
- 2014-05-02 CN CN201480024822.1A patent/CN105164470A/en active Pending
- 2014-05-02 WO PCT/US2014/036498 patent/WO2014179650A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623651A (en) * | 2021-08-18 | 2021-11-09 | 江苏中圣高科技产业有限公司 | Self-smoke-eliminating ground torch combustion system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014179650A1 (en) | 2014-11-06 |
| CA2909879A1 (en) | 2014-11-06 |
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Application publication date: 20151216 |