CN2731277Y - Petal shape flame stabilizer for vortex burner - Google Patents
Petal shape flame stabilizer for vortex burner Download PDFInfo
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- CN2731277Y CN2731277Y CN 200420062219 CN200420062219U CN2731277Y CN 2731277 Y CN2731277 Y CN 2731277Y CN 200420062219 CN200420062219 CN 200420062219 CN 200420062219 U CN200420062219 U CN 200420062219U CN 2731277 Y CN2731277 Y CN 2731277Y
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Abstract
The utility model discloses a petal shape flame stabilizer for a vortex burner used in a boiler burner. The petal shape flame stabilizer is a flame stabilizing ring, and the peripheral surface of the flame stabilizing ring is a ripple shape peripheral surface. The utility model can make coal powder fire in time, can make flame stabilize, and can make combustion perfect. The petal shape flame stabilizer for a vortex burner is especially suitable for the stable combustion of the low volatile lean coal burning with difficulty and anthracite coal powder. When the primary air powder air current of the boiler strides over the petal shape flame stabilizer and blows in a boiler chamber, the lee side of the petal shape flame stabilizer can establish a stable and strong back flow region for high temperature flue gas. The petal shape flame stabilizer creates strong caloric commutative condition between the back flow high temperature flue gas and wind powder air current.
Description
Technical field
The utility model belongs to the boiler-burner technical field, relates in particular to a kind of petal-shaped combustion stabilizer of turbulent burner.
Background technology
Steady combustion is the basis of burning, and stable combustion technology is a coal burner, particularly the relatively poor low volatile meager coal of reactivity worth and the key technology of anthracite coal burner and low-BTU gas burner design.For the low volatile burning of coal, at first to solve and catch fire rapidly and stable combustion problem.For low volatile meager coal and anthracite, how the design of state's inner burner does not adopt turbulent burner, at home the latter's bigger good bituminous coal of reactivity worth of volatile matter that is usually used in burning.But because of meager coal and anthracite limited in the application of other industrial circles, domestic again burning that is used for generating plant pulverized coal boiler more, the turbulent burner that bituminous coal is used in therefore former design also usually has to use the meager coal and the anthracite of low volatile, and making catches fire and surely fire becomes a turbulent burner major issue that must solve in service.Abroad, the station boiler turbulent burner is used very wide, and main bituminous coal also uses meager coal and anthracitic., to using the turbulent burner of meager coal and anthracite (coal dust), designed many stable combustion technologies, but effect is unsatisfactory both at home and abroad, main conditions are as follows:
1, air-flow rotation
The characteristics of turbulent burner are the air-flow rotations, to shorten the length of flame, avoid combustion flame bump opposite furnace wall, and the air-flow rotation can cause certain negative pressure in the burner central area, form the recirculating zone (recirculating zone or recirculating zone, center in claiming) of furnace high-temperature flame.Interior recirculating zone is the main thermal source that breeze airflow catches fire.The air-flow of burner divides wind (the band coal dust also claims the primary wind and powder air-flow) and secondary wind (not being with coal dust), and a wind is at internal layer, and secondary wind is at skin.(eddy flow) that the secondary wind of turbulent burner always rotates, one time wind can be eddy flow, also can be direct current (not having rotation).
For using meager coal and anthracitic turbulent burner, the general rotation of adopting secondary wind stronger (comparing) with bituminous coal, promptly adopt bigger swirl strength, sometimes a wind is also applied rotation, attempt causes more high temperature gases recirculating, to accelerate difficult combustion meager coal and anthracitic fire burns.
But the spin intensity of air-flow is excessive, can quicken the mixing between the primary and secondary air; The rotation of a wind more makes the pulverized coal particle in the wind fast to the diffusion of secondary wind, can postpone catching fire of breeze airflow on the contrary, and therefore, the measure of only taking to add the air blast rotation can not solve meager coal and anthracitic smooth combustion problem.
2, reamer structure
Install additional in breeze airflow outlet (entering the burner hearth place) and to expand flow cone (being similar to the bluff body structure), form negative pressure, can cause of the backflow of furnace high-temperature flue gas, with the heating of accelerating breeze airflow with catch fire to burner at the lee side that expands flow cone.The form that expands flow cone is varied, for the coal burner of no central air hose, expands flow cone and is fixed on the burner center-pole; For the burner that central air hose is arranged, expand flow cone and be fixed on the central air hose; External another kind of expansion flow cone is the multilayer taper ring, also claims multilayer disc type stabilizer.
For the coal-fired powder of difficulty,, adopt the cone angle of bigger expansion flow cone for increasing the backflow of high-temperature flue gas.But the expansion flow cone that angle is bigger has increased on the one hand the coal dust and the bump of reamer face in the gas powder stream, loses the pulverized coal particle of kinetic energy behind the bump, will separate from gas powder stream, burns down and just drops in the furnace hopper of boiler the formation incomplete combustion loss; Cause the primary wind and powder air-flow that just has been blown into burner hearth to external diffusion on the other hand, mix with secondary wind is too fast, and influence catching fire of coal dust.
Therefore, the reamer structure can not solve meager coal and anthracitic smooth combustion problem well.
3, vane type (propeller type) stabilizer
These technology are present in the import boiler more, insert vane type or propeller type stabilizer near wind powder air flow outlet in wind, can cause the rotation of primary wind and powder air-flow, its effect in fact with the additive method of a wind rotation roughly the same.
4, concentration coal burner one pulverized coal concentrator
Thick coal culm catches fire than thin powdered coal is easy in boiler, therefore adopts pulverized coal concentrator to make a part of wind powder air-flow be condensed into thick coal culm, helps coal powder ignition and steady combustion.The method that concentrates coal dust is a lot, and main concentration principle is centrifugation (concentrating) and inertial separation (concentrating).But existing concentration coal burner has its shortcoming, promptly causes slagging scorification easily.
Radially deep or light vortex burner is certain patented technology that aims at meager coal and anthracite design.Its key equipment is to have installed dense-and-weak separator additional in an airduct, and this is a kind of radially dense-and-weak separator.During primary wind and powder airflow passes inertia dense-and-weak separator, inside and outside separator, form the annular airflow of two strands of primary wind and powders, inner annular air-flow coal dust denseer and thick (concentrated phase), the outer shroud air-flow makes coal dust thinner and lighter (mutually light) because of the obstruction of inertia baffle plate.After making the dense phase pulverized coal air-flow in entering stove, being intended that of designer at first contact the backflow flue gas of furnace high-temperature, and very fast fire burns, light light phase breeze airflow then.In order to increase the backflow of furnace high-temperature flue gas, adopt the expansion flow cone of big (angle is 40 °) (this is the method that design meager coal and anthracite turbulent burner are often taked) of angle at a wind tube outlet.The result of implementation of this technology in some meager coals and anthracite-fired boiler, and fail to improve the stability of boiler combustion, slag and unburned carbon in flue dust are also higher, and the heat loss due to incomplete combustion is bigger.
The defective of this technology is that the very fast mixing of deep or light two strands of air-flows when breeze airflow enters burner hearth mixes with secondary wind again under the guiding of expanding flow cone too quickly.Avoiding too fast mixing of primary wind and powder air-flow and secondary wind then is the important prerequisite of meager coal and the burning of anthracite stable ignition.
5, ring gear shape (profile of tooth) stabilizer
This technology also is present in the import boiler, and installing ring gear shape or profile of tooth stabilizer in an airduct additional is the technology that many import boilers are used for smooth combustion.Profile of tooth or ring gear shape stabilizer have and be contained in primary wind and powder air-flow outer rim, also has to be contained in inner edge.Tooth or ring gear stabilizer are made up of a little tooth of circle (or adding an annulus again).Its objective is that the lee side at tooth forms many little eddy current, to stablize catching fire of breeze airflow.Attached to the profile of tooth in the primary wind and powder air-flow outside or the recirculating zone of ring gear shape stabilizer formation, be in the annular region between the primary and secondary air, the temperature of recirculating zone is not high, only depend on this recirculating zone be difficult to stablize coal dust fire burns, but it has wind of suitable prevention to mix too early with secondary wind and stops the trend of coal dust (particularly rough coal powder) to the diffusion of secondary wind, can also allow an amount of pulverized coal particle enter recirculating zone in the high temperature, coal-powder steady flame is had certain effect; The backflow that helps high-temperature flue gas attached to the profile of tooth or the ring gear shape stabilizer of a wind inboard, to breeze airflow fire burns certain effect is arranged.
The major defect of profile of tooth and ring gear shape stabilizer, the one, tooth is too little, and it is at the formed little eddy current potentially unstable of lee side, and it is not remarkable surely to fire effect, and the 2nd, the equal non-streamline of tooth and ring gear, flow resistance is big, suffers the wearing and tearing of breeze airflow easily, and the life-span is short.
Technology contents
The utility model provides a kind of can make the petal-shaped combustion stabilizer that coal dust in time catches fire, surely combustion also can be improved the turbulent burner of burning, and the utility model is particularly suitable for the meager coal of the difficult combustion of low volatile and the smooth combustion of anthracite coal dust.
The utility model adopts following technical scheme:
A kind of petal-shaped combustion stabilizer of the turbulent burner that uses in boiler-burner, petal-shaped combustion stabilizer are steady combustion ring, and the side face of steady combustion ring is the corrugated side face.
Compared with prior art, the utlity model has following advantage:
The strong caloic exchange of the primary wind and powder air-flow that stable high temperature gases recirculating district and backflow high-temperature flue gas and temperature are lower is that wind powder air-flow catches fire rapidly and the key of smooth combustion.
When boiler primary wind and powder air-flow strides across petal-shaped combustion stabilizer and is blown into burner hearth, can set up stable and strong high temperature gases recirculating district at the lee side of petal-shaped combustion stabilizer, and create the condition of caloic exchange strong between backflow high-temperature flue gas and the wind powder air-flow.
(1) circumference of petal-shaped combustion stabilizer exit end face is long, reach 2.5～4.0 times of central air hose, be (latter can only reach 1.5～1.6 times of central air hose at most) that enlarging, reamer can't be compared, illustrate that the Contact Boundary between high temperature reflux flue gas and the wind powder air-flow is very big, help caloic exchange between the two, and the high temperature gases recirculating district is again near the exit end face of petal-shaped combustion stabilizer, so primary wind and powder air-flow quick heating catches fire morning.
(2) petal-shaped combustion stabilizer can form and comprise the recirculating zone, center, special flow field such as recirculating zone radially, and quickened to flow through the primary wind and powder air-flow of petal-shaped combustion stabilizer and the mixing between the high temperature reflux flue gas, this is that wind powder air-flow heat temperature raising is fast, the Another reason early of catching fire.
(3) existence of petal-shaped combustion stabilizer, the ring-type primary wind and powder air-flow very big thickness is divided into except that the ring-type of a thinner layer, also have 6～12 (built-in petal-shaped combustion stabilizer) or 10～18 (external petal-shaped combustion stabilizer) sheet air-flows, the refluxed high-temperature flue gas two sides heating of sheet air-flow, catch fire easily, thin layer and the sheet wind powder air-flow after-combustion speed of catching fire is fast, and coal dust firing is more thorough.Sheet and thin layer annular flow are not cut apart mutually, fuse, and airflow stability is unaffected.
(4) its lee side that exists in of petal-shaped combustion stabilizer forms multiple recirculating zone.Except that the recirculating zone, center, also have radially a recirculating zone and an a pair of axial recirculating zone at the lee side of every petal, these high temperature gases recirculating districts have become wind powder air-flow to catch fire rapidly and the thermal source of smooth combustion.
(5) the radially existence of recirculating zone behind the special shape of petal and the every petal can impel that the part of coal powder particles enters high temperature recirculation zone in the primary wind and powder air-flow, and the certain hour that can circulate in the recirculating zone.Pulverized coal particle both can improve the temperature (this is to meager coal and anthracite combustion particular importance) of flue gas in the recirculating zone in the recirculating zone internal combustion, had prolonged the burning time of pulverized coal particle in stove again, made burning more complete.
(6) petal-shaped combustion stabilizer is originally as streamlined, and flow resistance is little, and the wearing and tearing of gas powder stream are lighter, long service life.
The characteristics that petal is built-in and the petal-shaped combustion stabilizer petal external is also had nothing in common with each other:
(1) built-in reamer shape petal-shaped combustion stabilizer is in the inboard of wind powder air-flow, also plays wind powder inspissation.When wind powder air-flow enters (stabilizer) petal zone, because the variation of petal arched door size, some pulverized coal particle changes lobe paddy zone in the wind powder air-flow, makes coal dust more (concentrated phase) in the wind powder air-flow of the lobe paddy of flowing through, the wind powder air-flow lighter (light phase) of lobe peak with exterior domain of flowing through.Concentrated phase wind powder air-flow is by the heating of high temperature reflux flue gas two sides, and it is very fast to catch fire, and meets the coal powder light-dark separation principle.
(2) built-in reducing and expansion shape petal-shaped combustion stabilizer, its characteristics and reamer shape are similar.The recirculating zone, center that reducing and expansion shape petal-shaped combustion stabilizer forms is slightly littler than reamer shape, and the Pulverized Coal Concentration degree is also poor slightly.But compare with the reamer shape, it also has characteristics: first, because lobe paddy is along airflow direction " contraction " (lobe paddy is linked to be imaginary diameter of a circle and reduces gradually) gradually, the circumferential length of its exit end face can be done longlyer than reamer shape, that is to say, can increase the Contact Boundary of wind powder air-flow and high temperature reflux flue gas biglyyer, help caloic exchange between the two; The second, the part pulverized coal particle can earlier enter the recirculating zone, center along lobe paddy in the wind powder air-flow, and heat is emitted in burning there.
(3) be contained in the taper petal-shaped combustion stabilizer (external) that contracts that once divides inside pipe wall and be in the wind powder air-flow outside (promptly being contained in the annular section between wind and the secondary wind), the lobe number of external petal-shaped combustion stabilizer is more than built-in lobe number.The advantage of external be can prevent wind powder air-flow to external diffusion (when wind powder air-flow during to external diffusion, pulverized coal particle can mix with secondary wind too early and be unfavorable for coal dust fire burns), and leader wind powder air-flow is drawn close to center line.For the taper petal-shaped combustion stabilizer that contracts of external, in recirculating zone of lee side formation of each (every) petal.Therefore, the annulus between wind and secondary wind has many recirculating zones.In this recirculating zone, the temperature of reflux fluid is lower than the recirculating zone that built-in petal-shaped combustion stabilizer forms, but it has the effect that stops secondary wind to mix with wind powder air-flow too early, the growing amount that helps reducing wind powder air-flow ignition heat and reduce NOx; Under the guiding of the taper that contracts, also can there be the part pulverized coal particle to enter the recirculating zone, center.When an elegance is used swirling eddy, the configuration external taper stabilizer particular importance that contracts, because when wind powder air-flow rotates, centrifugal force makes the pulverized coal particle trend air-flow outside (near an airduct inwall), if do not install the external petal-shaped combustion stabilizer, pulverized coal particle is (promptly to secondary wind one side) diffusion outwards, and can mix with secondary wind influences catching fire of (postponement) coal dust too early.The installing external contracts behind the taper stabilizer, prevented pulverized coal particle to external diffusion, also have the part pulverized coal particle to be folded to and flow to the recirculating zone, center, and there fire burns and emit heat.
The flow field of common turbulent burner (band expands flow cone) as shown in figure 13.The higher peripheral air stream of Figure 13 medium velocity is main flow (a wind powder air-flow), and the recirculating zone, center is surrounded by peripheral main flow.The center reflux fluid, in the time of near being back to burner, speed slows down, and a part is folded to and does half-turn, and another part is back to expansion flow cone inside and turns.Reflux fluid is folded to the back and makes PARALLEL FLOW along the outward flange and the main flow (wind powder air-flow) of recirculating zone.Mixing between two kinds of PARALLEL FLOW fluids and caloic exchange mainly be to rely between two fluids on the interface pulsation of fluid as power, but fluctuation velocity are more much lower than mainstream speed, almost differs from two orders of magnitude, and therefore, caloic exchange and mixing intensity are very low.That is to say that slower to the rate of heat addition of wind powder air-flow for this burner high temperature backflow flue gas, it is slower that wind powder air-flow enters the burner hearth postignition.
The flow field of the turbulent burner of wounded in the battle lobe stabilizer on lobe peak section as shown in figure 14.Outer peripheral areas beyond the lobe peak is a wind powder primary air, and the recirculating zone, center is also surrounded by peripheral main flow.Different with the ordinary burner of being with the expansion flow cone is at the lee side of every petal, have significantly radially recirculating zone, and radially the fluid and the recirculating zone, center of recirculating zone to merge.The center reflux fluid is folded near being back to burner the time, make Radial Flow at the lee side of petal, and radial velocity is higher, mixes with wind powder air-flow main fluid near the lobe peak.The fluid of the PARALLEL FLOW that the mixing intensity of radial fluid and axial flow of fluid is more identical than two kinds of directions is much bigger.So for the turbulent burner that petal-shaped combustion stabilizer is housed, the high temperature reflux flue gas is flowed to the wind powder air-flow that enters burner hearth from burner continuously by recirculating zone radially, make its rapid smooth combustion of fighting.
Description of drawings:
Fig. 1～5 are the schematic diagram of built-in reamer shape petal-shaped combustion stabilizer, wherein:
Fig. 1 is the stereogram of petal-shaped combustion stabilizer; Fig. 2 is the petal-shaped combustion stabilizer lateral sectional view;
Fig. 3 is the right view of petal-shaped combustion stabilizer Fig. 2;
Fig. 4 is along wind powder airflow direction (promptly along inlet end face to the exit end face direction), and in the process of petal transition, lobe peak imagination diameter of a circle and lobe paddy imagination diameter of a circle be the petal-shaped combustion stabilizer lateral sectional view of increase gradually all by circle for the circumference of stabilizer;
Fig. 5 is the right view of petal-shaped combustion stabilizer Fig. 4.
Fig. 6～7 are the schematic diagram of built-in reducing and expansion shape petal-shaped combustion stabilizer, wherein:
Fig. 6 is a lateral sectional view;
Fig. 7 is the right view of petal-shaped combustion stabilizer Fig. 6.
Fig. 8～12 are the contract schematic diagram of taper petal-shaped combustion stabilizer of external, wherein:
Fig. 8 is the stereogram of petal-shaped combustion stabilizer;
Fig. 9 is the petal-shaped combustion stabilizer lateral sectional view;
Figure 10 is the right view of petal-shaped combustion stabilizer Fig. 9;
Figure 11 is along wind powder airflow direction, the circumference of stabilizer by circle in the process of petal transition, the petal-shaped combustion stabilizer lateral sectional view that lobe peak imagination diameter of a circle and the imaginary diameter of a circle of lobe paddy all reduce gradually;
Figure 12 is the right view of petal-shaped combustion stabilizer Figure 11.
Figure 13 is the flow field figure of common turbulent burner (band expands flow cone).
Figure 14 is the flow field figure of the turbulent burner of wounded in the battle lobe stabilizer.
Figure 15 is the schematic diagram with built-in petal-shaped combustion stabilizer, and A is a petal-shaped combustion stabilizer.
Figure 16 is the schematic diagram of band external petal-shaped combustion stabilizer, and A is a petal-shaped combustion stabilizer.
Specific embodiments
A kind of petal-shaped combustion stabilizer of the turbulent burner that in boiler-burner, uses, petal-shaped combustion stabilizer is steady combustion ring 1, the side face of steady combustion ring 1 is the corrugated side face, the utility model can make the outer peripheral face of steady combustion ring 1 be the corrugated side face, also can make the inner peripheral surface of steady combustion ring 1 be the corrugated side face, or makes the inner and outer circumferential surfaces of steady combustion ring 1 all be the corrugated side face, in the present embodiment, the inner peripheral surface of steady combustion ring 1 is the corrugated side face, and the outer peripheral face of steady combustion ring 1 is the corrugated side face, and steady combustion ring 1 is a conical ring.
Key technology of the present utility model is a petal-shaped combustion stabilizer, it can with the turbulent burner compatibility of existing band central air hose.
Petal-shaped combustion stabilizer is a circulus.It has two end faces, and wherein the border of inlet end face is circular, so that be connected with central air hose or an airduct, its size (diameter) depends on a central air hose or an airduct size (diameter); The petal-shaped combustion stabilizer that is connected with central air hose claims built-in, divides reamer shape and reducing and expansion dress again; The petal-shaped combustion stabilizer that is connected with airduct claims external, is the taper that contracts.Another end face is the exit end face towards furnace flame, and its border fold becomes waveform, sees from the front to be petal-shaped.The lobe number of built-in petal-shaped combustion stabilizer petal is generally 6～12 lobes, and the diameter of phi 1 of the imaginary circle that each lobe paddy is linked to be is generally 0.8～1.2 times of central air hose diameter d c, i.e. Φ 1=(0.8～1.2) dc; On exit end face, the diameter of phi 2 of the imaginary circle that each lobe peak is linked to be is generally 1.3～2.5 times of dc, i.e. Φ 2=(1.3～2.5) dc.Along wind powder airflow direction, to petal transition, lobe peak imagination diameter of a circle increases the circumference of this stabilizer gradually, reaches Φ 2=(1.3～2.5) dc until exit end face by circle.Therefore, on exit end face, the size of petal circumference reaches 2.5～4.0 times of central air hose size (п dc).For the external petal-shaped combustion stabilizer, petal lobe number is generally 10～18 lobes, and the diameter of phi 2 of the imaginary circle that the lobe peak is linked to be is general identical with the inner diameter d 1 of an airduct, i.e. Φ 2=d1; On exit end face, the imaginary circle Φ 1 that lobe paddy is linked to be is generally 0.5～0.85 of d1, i.e. Φ 1=(0.5～0.85) d1.Petal-shaped combustion stabilizer is contained in the central air hose port of export or a wind tube outlet end, can install in the following way: built-in petal-shaped combustion stabilizer can directly be welded in the central air hose port of export, also can be enclosed within welding again on the central air hose port of export outer surface; The external petal-shaped combustion stabilizer can directly be welded in the wind tube outlet end one time, also can be enclosed within on a wind tube outlet end inner surface to weld again.Petal-shaped combustion stabilizer also can be used to the not have center wind turbulent burner of (being that central tube is the primary wind and powder air-flow), it can be welded in the port of export of the center-pole that is in an airduct center.
Claims (5)
1, a kind of petal-shaped combustion stabilizer of the turbulent burner that uses in boiler-burner is characterized in that petal-shaped combustion stabilizer is a steady combustion ring (1), and the side face of steady combustion ring (1) is the corrugated side face.
2, petal-shaped combustion stabilizer according to claim 1 is characterized in that the inner peripheral surface of steady combustion ring (1) is the corrugated side face.
3, petal-shaped combustion stabilizer according to claim 1 and 2 is characterized in that the outer peripheral face of steady combustion ring (1) is the corrugated side face.
4, petal-shaped combustion stabilizer according to claim 3 is characterized in that steady combustion ring (1) is conical ring.
5, petal-shaped combustion stabilizer according to claim 1 and 2 is characterized in that steady combustion ring (1) is conical ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062219 CN2731277Y (en) | 2004-06-29 | 2004-06-29 | Petal shape flame stabilizer for vortex burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420062219 CN2731277Y (en) | 2004-06-29 | 2004-06-29 | Petal shape flame stabilizer for vortex burner |
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| Publication Number | Publication Date |
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| CN2731277Y true CN2731277Y (en) | 2005-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420062219 Expired - Fee Related CN2731277Y (en) | 2004-06-29 | 2004-06-29 | Petal shape flame stabilizer for vortex burner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494338A (en) * | 2011-12-26 | 2012-06-13 | 上海锅炉厂有限公司 | Micro oil ignition staged combustion system |
| CN103411214A (en) * | 2013-08-26 | 2013-11-27 | 中节环立为（武汉）能源技术有限公司 | Internal contraction and external expansion type nozzle for swirl pulverized coal burner |
| CN103672877A (en) * | 2012-09-17 | 2014-03-26 | 西门子公司 | Gasifying burner with inert gas curtain between pilot burner and powder burner |
| CN112728531A (en) * | 2020-12-24 | 2021-04-30 | 天津南极星隔热材料有限公司 | A anti structure that explodes for protecting coal injection pipe |
| WO2022042732A1 (en) * | 2020-08-31 | 2022-03-03 | 煤科院节能技术有限公司 | Two-channel burner and method of use therefor, and multi-channel single-cone burner and method of use therefor |
| CN114688526A (en) * | 2020-12-31 | 2022-07-01 | 大连理工大学 | Pre-film type gas-assisted atomizing nozzle with petal-shaped outlet |
-
2004
- 2004-06-29 CN CN 200420062219 patent/CN2731277Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494338A (en) * | 2011-12-26 | 2012-06-13 | 上海锅炉厂有限公司 | Micro oil ignition staged combustion system |
| CN102494338B (en) * | 2011-12-26 | 2014-04-09 | 上海锅炉厂有限公司 | Micro oil ignition staged combustion system |
| CN103672877A (en) * | 2012-09-17 | 2014-03-26 | 西门子公司 | Gasifying burner with inert gas curtain between pilot burner and powder burner |
| CN103411214A (en) * | 2013-08-26 | 2013-11-27 | 中节环立为（武汉）能源技术有限公司 | Internal contraction and external expansion type nozzle for swirl pulverized coal burner |
| CN103411214B (en) * | 2013-08-26 | 2016-05-25 | 中节环立为（武汉）能源技术有限公司 | Vortex burner inside contracts and extends out formula nozzle |
| WO2022042732A1 (en) * | 2020-08-31 | 2022-03-03 | 煤科院节能技术有限公司 | Two-channel burner and method of use therefor, and multi-channel single-cone burner and method of use therefor |
| CN112728531A (en) * | 2020-12-24 | 2021-04-30 | 天津南极星隔热材料有限公司 | A anti structure that explodes for protecting coal injection pipe |
| CN114688526A (en) * | 2020-12-31 | 2022-07-01 | 大连理工大学 | Pre-film type gas-assisted atomizing nozzle with petal-shaped outlet |
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