CN213395305U - Long flame oxygen-enriched combustor - Google Patents
Long flame oxygen-enriched combustor Download PDFInfo
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- CN213395305U CN213395305U CN202021929018.7U CN202021929018U CN213395305U CN 213395305 U CN213395305 U CN 213395305U CN 202021929018 U CN202021929018 U CN 202021929018U CN 213395305 U CN213395305 U CN 213395305U
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 239000001301 oxygen Substances 0.000 title claims abstract description 175
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 175
- 239000000446 fuel Substances 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 abstract description 4
- 238000001354 calcination Methods 0.000 description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 6
- 235000011941 Tilia x europaea Nutrition 0.000 description 6
- 239000004571 lime Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses a long flame oxygen-enriched burner, which relates to the technical field of oxygen-enriched burners and comprises an air inlet main pipe, wherein the air inlet main pipe comprises a plurality of coaxial and mutually sealed sleeves, a gap between two adjacent sleeves forms an annular gas transmission channel, and the gas transmission channel comprises an ignition channel, an oxygen-enriched air central channel, an oxygen-enriched air cyclone channel, a fuel air duct, a low-concentration oxygen-enriched air cyclone channel and a natural air axial flow channel from inside to outside; one end of the air inlet main pipe is provided with a spray head communicated with the gas transmission channel; the gas transmission channels are provided with corresponding air inlet pipelines; each air inlet pipeline is provided with a valve. By adding the oxygen-enriched air central channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel, the fuel is combusted in an oxygen-enriched environment, the fuel combustion efficiency, the burn-out rate and the thermal strength are improved, and the excess air coefficient and the smoke amount are reduced.
Description
Technical Field
The utility model relates to a rich combustor especially relates to a long flame oxygen boosting combustor.
Background
Conventional lime kiln combustor promotes solid phase, liquid phase or gaseous phase fuel burning as combustion-supporting gas for ordinary air, and oxygen content in the ordinary air only is about 21%, and fuel and oxygen contact are not abundant, and conventional lime kiln combustor exists that the fuel burning is incomplete, and the burn-out rate is low, and the excess of air coefficient is high, and the flue gas volume is big, the low scheduling problem of heating power intensity, consequently, it improves high material calcination efficiency to need a long flame oxygen boosting combustor, the utility model discloses a long flame oxygen boosting combustor adopts long flame, oxygen boosting technique, when improving fuel combustion efficiency, the burn-out rate, heating power intensity and reduction excess of air coefficient, flue gas volume, provides longer flame length, and extension lime kiln high temperature calcination region improves material calcination efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a long flame oxygen boosting combustor to there is the incomplete, the low shortcoming of burn-off rate of fuel combustion in having overcome conventional limekiln combustor.
In order to achieve the above object, the utility model provides a long flame oxygen boosting combustor, include:
the air inlet main pipe comprises a plurality of coaxial and mutually sealed sleeves, a gap between every two adjacent sleeves forms an annular air delivery channel, and the air delivery channel comprises an ignition channel, an oxygen-enriched air central channel, an oxygen-enriched air cyclone channel, a fuel air channel, a low-concentration oxygen-enriched air cyclone channel and a natural air axial flow channel from inside to outside;
the burner outer sleeve is arranged outside the air inlet main pipe;
the spray head is arranged at one end of the air inlet main pipe and is respectively communicated with the gas transmission channel;
the air inlet pipelines are arranged at the other end of the air inlet main pipe, and air is conveyed through the air inlet pipelines; and
and each air inlet pipeline is provided with a valve, and the air inlet concentration of the corresponding air inlet pipeline is controlled through the valve.
Furthermore, the spray head comprises a plurality of coaxial sleeves matched with the air inlet main pipe and a spray head outer sleeve arranged on the outermost sleeve.
Furthermore, a plurality of axial flow oxygen-enriched air outlets are arranged on the circular end face of the sleeve on the innermost layer of the spray head, the axial flow oxygen-enriched air outlets are annularly and uniformly distributed to form an arc, at least one arc is arranged, and an oxygen-enriched air central channel is formed by the axial flow oxygen-enriched air outlets;
the circular end face of the sleeve on the outermost layer of the spray head is provided with a plurality of axial flow natural air outlets which are annularly and uniformly distributed to form an arc, and a natural air axial flow channel is formed by the plurality of axial flow natural air outlets.
Furthermore, the nozzle adopts four coaxial sleeves, namely a first sleeve, a second sleeve, a third sleeve and a fourth sleeve from inside to outside; the annular gas channel between the third sleeve and the fourth sleeve is a low-concentration oxygen-enriched air cyclone channel, the fourth sleeve is provided with a plurality of axial flow natural air outlets, and the axial flow natural air outlets arranged by the arcs form a natural air axial flow channel.
Further, the intake stack still includes:
the fuel air inlet pipeline is connected with the side part of the fuel air duct;
the ignition air inlet channel is connected with the other end of the ignition channel;
the natural air inlet pipeline is respectively connected with the side parts of the natural air axial flow channel and the low-concentration oxygen-enriched air cyclone channel and is provided with corresponding valves for controlling the air quantity of the natural air axial flow channel and the low-concentration oxygen-enriched air cyclone channel; and
and the oxygen-enriched air inlet pipeline is respectively connected with the side parts of the oxygen-enriched air central channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel, and the oxygen-enriched air inlet pipeline is respectively provided with corresponding valves for controlling the oxygen-enriched air quantity of the oxygen-enriched air central channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel.
Furthermore, the fuel air duct, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel are respectively provided with an adjusting device, and the adjusting devices are used for controlling other speeds and cyclone angles passing through the corresponding gas delivery channels.
Furthermore, a plurality of axial-flow oxygen-enriched air outlets are annularly and uniformly distributed to form a circular ring which is arranged on the circular end face of the casing pipe of the innermost layer.
Furthermore, a plurality of axial flow natural wind outlets are annularly and uniformly distributed to form a circular ring which is arranged on the circular end face of the sleeve pipe at the outermost layer.
Furthermore, the natural wind inlet pipeline is a Y-shaped pipeline, the Y-shaped pipeline comprises a natural wind main pipe, a left branch pipe and a right branch pipe, the left branch pipe and the right branch pipe are respectively connected with one end of the natural wind main pipe, an outlet of the left branch pipe is connected and communicated with the side part of the low-concentration oxygen-enriched wind cyclone channel, and a natural wind cyclone channel butterfly valve is arranged on the left branch pipe; the outlet of the right branch pipe is connected and communicated with the side part of the natural wind axial flow passage, and a natural wind axial flow passage butterfly valve is arranged on the right branch pipe.
Further, oxygen-enriched air inlet pipeline includes: the device comprises a first pipeline, a second pipeline and a third pipeline, wherein one end of the first pipeline is a main oxygen-enriched air inlet, and the other end of the first pipeline is connected with the side part of a left branch pipe; a first oxygen-enriched air cyclone channel butterfly valve is arranged on the first pipeline; one end of the second pipeline is connected with the side part of the first pipeline, the other end of the second pipeline is connected with the side part of the oxygen-enriched air central channel, and a butterfly valve of the oxygen-enriched air central channel is arranged on the second pipeline; one end of the third pipeline is connected with the side part of the first pipeline, the other end of the third pipeline is connected with the side part of the oxygen-enriched air cyclone channel, and a second oxygen-enriched air cyclone channel butterfly valve is arranged on the third pipeline.
Further, the burner outer sleeve and the nozzle outer sleeve are both made of refractory materials.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a long flame oxygen boosting combustor, including air inlet main pipe, combustor outer tube, shower nozzle, air inlet pipe and valve, air inlet main pipe includes many coaxial, the sealed sleeve pipe each other, and the clearance between two adjacent sleeve pipes forms annular gas transfer passageway, and gas transfer passageway includes from inside to outside ignition passageway, oxygen boosting wind central channel, oxygen boosting wind vortex channel, fuel wind channel, low concentration oxygen boosting wind vortex channel and natural wind axial flow channel; a burner outer sleeve is arranged outside the air inlet main pipe; one end of the air inlet main pipe is provided with a spray head communicated with the gas transmission channel; the gas transmission channels are provided with corresponding air inlet pipelines which are arranged at the other end of the air inlet main pipe, and gas transmission is carried out through the air inlet pipelines; each air inlet pipeline is provided with a valve, and the air inlet concentration of the corresponding air inlet pipeline is controlled through the valve. By adding the oxygen-enriched air central channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel, the fuel is combusted in an oxygen-enriched environment, the fuel combustion efficiency, the burn-out rate and the thermal strength are improved, and the excess air coefficient and the smoke amount are reduced; meanwhile, the adjusting device is adopted to control the rotational flow angle of the axial flow air and the rotational flow angle of the rotational flow air, so that the high material calcining efficiency is higher, the high-temperature calcining area of the lime kiln is prolonged by providing longer flame length, the material calcining efficiency is improved, the unit production efficiency of the kiln is improved, and the unit product production cost is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only one embodiment of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the structure of a long flame oxy-fuel burner of the present invention;
FIG. 2 is a schematic structural view of the sprinkler head of the present invention;
fig. 3 is a schematic structural diagram of the adjusting device of the present invention;
wherein: 1. an air inlet main pipe; 2. an adjustable flange; 3. a spray head; 4. a caliper; 5. a nozzle outer sleeve; 6. a first sleeve; 7. a second sleeve; 8. a third sleeve; 9. a fourth sleeve; 10. an axial flow oxygen-enriched air outlet; 11. an axial flow natural wind outlet; 13. a fuel air inlet pipeline; 14. an ignition air inlet channel; 15. a natural wind inlet pipeline; 16. an oxygen-enriched air inlet pipeline; 17. a natural wind main pipe; 18. a left branch pipe; 19. a right branch pipe; 20. a natural wind axial flow channel butterfly valve; 21. a natural wind swirl channel butterfly valve; 22. a first conduit; 23. a second conduit; 24. a third pipeline; 25. a first oxygen-enriched air cyclone channel butterfly valve; 26. a butterfly valve of the oxygen-enriched air central channel; 27. a butterfly valve of a second oxygen-enriched air cyclone channel; 28. an adjustment device; 29. an ignition channel; 30. an oxygen-enriched air central channel; 31. an oxygen-enriched air cyclone channel; 32. a fuel air duct; 33. a low-concentration oxygen-enriched air cyclone channel; 34. natural wind axial flow channel.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the long flame oxygen-enriched burner provided by the utility model comprises: air inlet main pipe 1, combustor outer tube, shower nozzle 3, air inlet pipe and valve.
The air inlet main pipe 1 comprises a plurality of coaxial and mutually sealed sleeves, a gap between every two adjacent sleeves forms an annular gas conveying channel, and the gas conveying channel comprises an ignition channel 29, an oxygen-enriched air central channel 30, an oxygen-enriched air cyclone channel 31, a fuel air channel 32, a low-concentration oxygen-enriched air cyclone channel 33 and a natural air axial flow channel which are coaxially arranged from inside to outside;
the outer sleeve of the burner is sleeved outside the air inlet main pipe 1, and the outer sleeve of the burner and the air inlet main pipe 1 are coaxially arranged;
one end of the main air inlet pipe 1 is provided with a spray head 3 communicated with the main air inlet pipe 1, namely the spray head 3 is arranged at the foremost end of the main air inlet pipe 1, the spray heads 3 are respectively communicated with each gas transmission channel, and the spray heads 3 are provided with air outlets; each gas delivery channel is provided with a corresponding air inlet pipeline, the air inlet pipeline is arranged at the other end of the air inlet main pipe 1, and corresponding gas is delivered through each air inlet pipeline;
each air inlet pipeline is provided with a valve, and the air inlet concentration of the corresponding air inlet pipeline is controlled through the valve. As shown in fig. 2, the nozzle 3 includes a plurality of coaxial sleeves matching the intake manifold 1 and a nozzle 3 outer sleeve provided on the outermost sleeve. The outer sleeve of the burner and the outer sleeve of the nozzle 3 are both made of refractory materials, and the whole long-flame rich burner is protected by the refractory materials.
A plurality of axial flow oxygen-enriched air outlets 10 are arranged on the circular end face of the sleeve on the innermost layer of the nozzle 3, the axial flow oxygen-enriched air outlets 10 are annularly and uniformly distributed to form an arc, at least one arc is arranged, and an oxygen-enriched air central channel 30 is formed by the axial flow oxygen-enriched air outlets 10;
a plurality of axial flow natural air outlets 11 are arranged on the circular end face of the sleeve on the outermost layer of the spray head 3, are annularly and uniformly distributed to form an arc, and form a natural air axial flow channel through the plurality of axial flow natural air outlets;
in the embodiment, the air inlet main pipe 1 and the spray head 3 both adopt four coaxial sleeves, and the four coaxial sleeves of the spray head 3 are respectively a first sleeve 6, a second sleeve 7, a third sleeve 8 and a fourth sleeve 9 from inside to outside; the gap between each sleeve forms an annular gas transmission channel;
the passage in the first sleeve 6 is an ignition passage 29,
the circular end face of the first sleeve 6 is provided with a plurality of axial flow oxygen-enriched air outlets 10, the axial flow oxygen-enriched air outlets 10 arranged in an arc form an oxygen-enriched air central channel 30, the axial flow oxygen-enriched air outlets 10 are annularly and uniformly distributed to form a circular ring, the circular end face of the first sleeve 6 is provided with a plurality of circular rings formed by uniformly exhausting the axial flow oxygen-enriched air outlets 10, the circular ring formed by the axial flow oxygen-enriched air outlets 10 is coaxial with all sleeves, and in the embodiment, two circular rings formed by the axial flow oxygen-enriched air outlets 10 are coaxially arranged on the circular end face of the sleeve at the innermost layer;
the annular gas channel between the first sleeve 6 and the second sleeve 7 is an oxygen-enriched wind cyclone channel 31;
the annular gas channel between the second sleeve 7 and the third sleeve 8 is a fuel air duct 32;
the annular gas channel between the third sleeve 8 and the fourth sleeve 9 is a low-concentration oxygen-enriched air cyclone channel 33;
the fourth sleeve 9 is provided with a plurality of axial flow natural wind outlets 11, the axial flow natural wind outlets 11 arranged in a plurality of circular arcs form a natural wind axial flow channel, the plurality of axial flow natural wind outlets 11 are annularly and uniformly distributed to form a circular ring, the circular ring is coaxial with all the sleeves, and the fourth sleeve 9 is provided with 12 axial flow natural wind outlets 11 arranged in a circular ring manner in the embodiment.
With continued reference to fig. 1, the air inlet duct further includes: a fuel air inlet pipeline 13, an ignition air inlet channel 14, a natural air inlet pipeline 15 and an oxygen-enriched air inlet pipeline 16.
The fuel air inlet pipe 13 is connected with the side part of the fuel air duct 32, the fuel air inlet pipe 13 is communicated with the fuel air duct 32, and the fuel air inlet pipe 13 is a fork-shaped cylindrical pipe.
The ignition air inlet channel 14 is connected with the other end of the ignition channel 29, and the ignition air inlet channel 14 is communicated with the ignition channel 29.
The natural wind inlet pipeline 15 is respectively connected with the side parts of the natural wind axial flow channel and the low-concentration oxygen-enriched wind cyclone channel 33, and the natural wind inlet pipeline 15 is respectively communicated with the natural wind axial flow channel and the low-concentration oxygen-enriched wind cyclone channel 33; the natural wind inlet pipeline 15 is respectively provided with corresponding valves to control the air quantity of the natural wind axial flow channel and the low-concentration oxygen-enriched wind cyclone channel 33;
the natural wind inlet pipeline 15 is a Y-shaped pipeline, and the Y-shaped pipeline comprises a natural wind main pipe 17 and a left branch pipe 18 and a right branch pipe 19 which are respectively connected with one end of the natural wind main pipe 17; the outlet of the left branch pipe 18 is connected and communicated with the side part of the low-concentration oxygen-enriched air cyclone channel 33; a natural wind swirl channel butterfly valve 21 is arranged on the left branch pipe 18; the outlet of the right branch pipe 19 is connected and communicated with the side part of the natural wind axial flow channel; the right branch pipe 19 is provided with a natural wind axial flow channel butterfly valve 20, and natural wind is transmitted to the left and right branch pipes 19 through the other end of the natural wind main pipe 17, so that the natural wind is transmitted to the low-concentration oxygen-enriched wind swirling channel 33 and the natural wind axial flow channel 34.
The oxygen-enriched air inlet pipeline 16 is respectively connected with the side parts of the oxygen-enriched air central channel 30, the oxygen-enriched air cyclone channel 31 and the low-concentration oxygen-enriched air cyclone channel 33, the oxygen-enriched air inlet pipeline 16 is respectively communicated with the oxygen-enriched air central channel 30, the oxygen-enriched air cyclone channel 31 and the low-concentration oxygen-enriched air cyclone channel 33, and corresponding valves are respectively arranged on the oxygen-enriched air inlet pipeline 16 to control the oxygen-enriched air quantity of the oxygen-enriched air central channel 30, the oxygen-enriched air cyclone channel 31 and the low-concentration oxygen-enriched air cyclone channel 33;
the oxygen-enriched air inlet duct 16 includes: a first pipeline 22, a second pipeline 23 and a third pipeline 24, wherein one end of the first pipeline 22 is an air inlet of the main oxygen-enriched air quantity, the other end of the first pipeline 22 is connected with the side part of a right branch pipe 19 between a butterfly valve 21 of a natural air swirl channel and a low-concentration oxygen-enriched air swirl channel 33, the first pipeline 22 is communicated with a left branch pipe 18, and a butterfly valve 25 of the first oxygen-enriched air swirl channel is arranged on the first pipeline 22; one end of the second pipeline 23 is connected with the side part of the first pipeline 22, the other end of the second pipeline 23 is connected with the side part of the oxygen-enriched wind central channel 30, the second pipeline 23 is respectively communicated with the first pipeline 22 and the oxygen-enriched wind central channel 30, and the second pipeline 23 is provided with an oxygen-enriched wind central channel butterfly valve 26; one end of the third pipeline 24 is connected with the side part of the first pipeline 22, the other end of the third pipeline 24 is connected with the side part of the oxygen-enriched air cyclone channel 31, the third pipeline 24 is respectively communicated with the first pipeline 22 and the oxygen-enriched air cyclone channel 31, and a second oxygen-enriched air cyclone channel butterfly valve 27 is arranged on the third pipeline 24; the second pipeline 23, the third pipeline 24 and the first oxygen-enriched air cyclone channel butterfly valve 25 are sequentially arranged on the first pipeline 22 along the air inlet direction of the first pipeline 22, so that the valves on the first pipeline 22, the second pipeline 23 and the third pipeline 24 can independently control the oxygen-enriched air quantity transmitted into the low-concentration oxygen-enriched air cyclone channel 33, the oxygen-enriched air cyclone channel 31 and the oxygen-enriched air central channel 30.
Referring to fig. 1, the fuel air duct 32, the oxygen-enriched air cyclone channel 31 and the low-concentration oxygen-enriched air cyclone channel 3331 are all provided with the adjusting devices 28, and the lengths of the fuel air duct 32, the oxygen-enriched air cyclone channel 31 and the low-concentration oxygen-enriched air cyclone channel 33 are controlled by the adjusting devices 28, so that the gas transmission channel is changed, that is, the gas with the same concentration is transmitted at the same time, and the corresponding speed and cyclone angle are correspondingly changed, that is, the speed and cyclone angle of the transmitted gas of the corresponding gas transmission channel are changed by the adjusting devices 28, so as to realize the adjustment of the air quantity under the required working condition.
As shown in fig. 3, the adjusting device 28 employs an adjustable flange 2, i.e., two adjacent gas delivery channels are connected by the adjustable flange 2. Be equipped with the slide caliper rule 4 parallel with gas transfer passage axle on the adjustable flange 2, the one end of slide caliper rule 4 is connected with the one end of adjustable flange 2, when adjusting adjustable flange 2, can observe the length of adjusting through slide caliper rule 4.
The operation method of the long flame oxygen-enriched burner of the utility model is explained in detail, so that the technical personnel in the field can understand the utility model more:
firstly, connecting a fuel conveying pipeline with an air inlet of a fuel air inlet pipeline 13, connecting an air outlet of a primary fan with an air inlet of a natural air inlet pipeline 15, and connecting an oxygen-enriched air conveying pipeline with an air inlet of an oxygen-enriched air inlet pipeline 16; then, the oxygen-enriched air quantity of the oxygen-enriched air central channel 30 is controlled through the butterfly valve 26 of the oxygen-enriched air central channel; the oxygen-enriched air quantity of the oxygen-enriched air cyclone channel 31 is controlled by a butterfly valve 27 of the second oxygen-enriched air cyclone channel, and the air speed and the cyclone angle of the oxygen-enriched air are adjusted by an adjusting device 28 on the oxygen-enriched air cyclone channel 31; the oxygen-enriched air quantity of the low-concentration oxygen-enriched air cyclone channel 33 is controlled through the first oxygen-enriched air cyclone channel butterfly valve 25, meanwhile, the natural air and the oxygen-enriched air are controlled through the natural air cyclone channel butterfly valve 21 to be mixed into low-concentration oxygen-enriched air, and the air speed and the cyclone angle of the low-concentration oxygen-enriched air are adjusted through the adjusting device 28 on the low-concentration oxygen-enriched air cyclone channel 33; the butterfly valve 20 controls the amount of the ordinary air flowing through the natural wind axis; finally, ignition is carried out through the ignition air inlet channel 14.
By adding the oxygen-enriched air central channel 30, the oxygen-enriched air cyclone channel 31 and the low-concentration oxygen-enriched air cyclone channel 3331, the fuel is combusted in an oxygen-enriched environment, and all cyclone air is in an oxygen-enriched condition, so that the air flow mixing of oxygen and natural air is enhanced, the fuel dispersion is promoted, the effective contact area of the oxygen and the fuel is increased, the fuel combustion efficiency, the burnout rate and the thermal strength are improved, and the air excess coefficient and the smoke amount are reduced; the swirl angle of axial flow wind and control swirl wind is controlled by adopting high-thrust fuel wind through the adjusting device 28, and the effective range of fuel can be effectively improved by the high-thrust fuel wind, so that the flame length is improved; the control of the rotational flow angle and the axial flow air quantity is beneficial to ensuring that the axial flow air is increased by reducing the axial flow air under the condition of air flow mixing, namely the mode of improving the air speed of the axial flow air is improved, so that the flame length is improved, the high-temperature calcining area of the lime kiln is prolonged, and the material calcining efficiency is improved. And further, the combustion efficiency, the burnout rate and the thermal strength of the fuel are improved, the excess air coefficient and the smoke gas amount are reduced, the high-temperature calcining area of the lime kiln is prolonged, the material calcining rate is improved, the unit production efficiency of the kiln is improved, and the unit product production cost is reduced.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or modifications within the technical scope of the present invention, and all should be covered by the scope of the present invention.
Claims (10)
1. A long flame oxygen-enriched combustor is characterized in that: the method comprises the following steps:
the air inlet main pipe comprises a plurality of coaxial and mutually sealed sleeves, a gap between every two adjacent sleeves forms an annular air delivery channel, and the air delivery channel comprises an ignition channel, an oxygen-enriched air central channel, an oxygen-enriched air cyclone channel, a fuel air channel, a low-concentration oxygen-enriched air cyclone channel and a natural air axial flow channel from inside to outside;
the burner outer sleeve is arranged outside the air inlet main pipe;
the spray head is arranged at one end of the air inlet main pipe and is respectively communicated with the gas transmission channel;
the air inlet pipelines are arranged at the other end of the air inlet main pipe, and air is conveyed through the air inlet pipelines; and
and each air inlet pipeline is provided with a valve, and the air inlet concentration of the corresponding air inlet pipeline is controlled through the valve.
2. The long flame oxycombustion of claim 1, characterized in that: the shower nozzle includes with air inlet main assorted many coaxial sleeves and sets up the shower nozzle outer tube on the outmost sleeve pipe.
3. The long flame oxycombustion of claim 2, characterized in that: the circular end face of the sleeve on the innermost layer of the spray head is provided with a plurality of axial flow oxygen-enriched air outlets which are annularly and uniformly distributed to form an arc, at least one arc is arranged, and an oxygen-enriched air central channel is formed by the axial flow oxygen-enriched air outlets;
the circular end face of the sleeve on the outermost layer of the spray head is provided with a plurality of axial flow natural air outlets which are annularly and uniformly distributed to form an arc, and a natural air axial flow channel is formed by the plurality of axial flow natural air outlets.
4. The long flame oxycombustion of claim 3, characterized in that: the nozzle adopts four coaxial sleeves, namely a first sleeve, a second sleeve, a third sleeve and a fourth sleeve from inside to outside; the annular gas channel between the third sleeve and the fourth sleeve is a low-concentration oxygen-enriched air cyclone channel, the fourth sleeve is provided with a plurality of axial flow natural air outlets, and the axial flow natural air outlets arranged by the arcs form a natural air axial flow channel.
5. The long flame oxycombustion of claim 1, characterized in that: the intake stack still includes:
the fuel air inlet pipeline is connected with the side part of the fuel air duct;
the ignition air inlet channel is connected with the other end of the ignition channel;
the natural air inlet pipeline is respectively connected with the side parts of the natural air axial flow channel and the low-concentration oxygen-enriched air cyclone channel and is provided with corresponding valves for controlling the air quantity of the natural air axial flow channel and the low-concentration oxygen-enriched air cyclone channel; and
and the oxygen-enriched air inlet pipeline is respectively connected with the side parts of the oxygen-enriched air central channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel, and the oxygen-enriched air inlet pipeline is respectively provided with corresponding valves for controlling the oxygen-enriched air quantity of the oxygen-enriched air central channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel.
6. The long flame oxycombustion of claim 1, characterized in that: the fuel air channel, the oxygen-enriched air cyclone channel and the low-concentration oxygen-enriched air cyclone channel are respectively provided with an adjusting device, and the lengths of the gas conveying channels are controlled by the adjusting devices, so that the speed and the cyclone angle of the conveying gas of the corresponding gas conveying channel are changed.
7. The long flame oxycombustion of claim 3, characterized in that: and a plurality of axial flow oxygen-enriched air outlets are annularly and uniformly distributed to form a circular ring and are arranged on the circular end surface of the casing pipe of the innermost layer.
8. The long flame oxycombustion of claim 3, characterized in that: and a plurality of axial flow natural wind outlets are annularly and uniformly distributed to form a circular ring which is arranged on the circular end surface of the outermost sleeve.
9. The long flame oxycombustion of claim 5, characterized in that: the natural wind air inlet pipeline is a Y-shaped pipeline, the Y-shaped pipeline comprises a natural wind main pipe, a left branch pipe and a right branch pipe, the left branch pipe and the right branch pipe are respectively connected with one end of the natural wind main pipe, an outlet of the left branch pipe is connected and communicated with the side part of the low-concentration oxygen-enriched wind cyclone channel, and a natural wind cyclone channel butterfly valve is arranged on the left branch pipe; the outlet of the right branch pipe is connected and communicated with the side part of the natural wind axial flow passage, and a natural wind axial flow passage butterfly valve is arranged on the right branch pipe.
10. The long flame oxycombustion of claim 9, wherein: the oxygen-enriched air inlet pipeline comprises: the device comprises a first pipeline, a second pipeline and a third pipeline, wherein one end of the first pipeline is a main oxygen-enriched air inlet, and the other end of the first pipeline is connected with the side part of a left branch pipe; a first oxygen-enriched air cyclone channel butterfly valve is arranged on the first pipeline; one end of the second pipeline is connected with the side part of the first pipeline, the other end of the second pipeline is connected with the side part of the oxygen-enriched air central channel, and a butterfly valve of the oxygen-enriched air central channel is arranged on the second pipeline; one end of the third pipeline is connected with the side part of the first pipeline, the other end of the third pipeline is connected with the side part of the oxygen-enriched air cyclone channel, and a second oxygen-enriched air cyclone channel butterfly valve is arranged on the third pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021929018.7U CN213395305U (en) | 2020-09-07 | 2020-09-07 | Long flame oxygen-enriched combustor |
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Granted publication date: 20210608 |