CN201803364U - Compact type oxygen-enriched combustor - Google Patents
Compact type oxygen-enriched combustor Download PDFInfo
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- CN201803364U CN201803364U CN2010202068504U CN201020206850U CN201803364U CN 201803364 U CN201803364 U CN 201803364U CN 2010202068504 U CN2010202068504 U CN 2010202068504U CN 201020206850 U CN201020206850 U CN 201020206850U CN 201803364 U CN201803364 U CN 201803364U
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- oxygen
- pipe
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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 compact type oxygen-enriched combustor. The combustor comprises an oil gun pipe, a primary air swirl generator and a secondary air swirl generator which are coaxially arranged from inside to outside. The combustor is characterized in that an oxygen feeder is arranged between the primary air swirl generator and the secondary air swirl generator and comprises an oxygen cavity body, an oxygen inlet pipe, an oxygen pipe, jet pipes, a front barrier ring and a rear barrier ring, wherein the oxygen inlet pipe is positioned at one end of the cavity body, and the inlet end of the oxygen pipe is connected with the other end of the cavity body; and the jet pipes are positioned at the outlet end of the oxygen pipe and are uniformly distributed around a primary air pipe, the two ends of each jet pipe are connected with the front barrier ring and the rear barrier ring, and the holes of the two barrier rings are connected with the jet pipes correspondingly. The combustor can be optimized, the barrier rings and a thick-lean separator are added, the swirl number and the momentum ratio are adjustable within wider ranges, the combustion efficiency is higher, the fuel adaptability is stronger, and the combustion-supporting performance of the conventional air and the combustion-supporting performance of the oxygen/circulatory fuel gas in the utility model are better.
Description
Technical field
The utility model relates to a kind of burner, particularly at a kind of oxygen-enriched burner of boiler and Industrial Stoves coal dust firing.
Background technology
In existing boiler coal-ash combustion power generation technology, exist high carbon dioxide, discharged nitrous oxides, environment is caused very big pollution.The CO of coal-fired power station boiler discharging
2Account for China CO
2More than 70% of discharge capacity, exploitation has CO
2The novel coal generation technology that captures is to realize the extensive CO of reduction of discharging
2Fundamental way.In various emission-reduction technologies, the oxygen combustion technology for combustion air, adopts circulating flue gas to regulate burner hearth interior rate-of flow and heat-transfer character with highly purified oxo simultaneously, can obtain the CO that is rich in of high volumetric concentration
2Flue gas, the CO that catches
2Ground storage is carried out in compression dehumidifying dedusting etc., and this systemic technology is called CO
2Capture and bury technology (being called for short CCS).
For coal-fired power station boiler, because the novel combustion system of this intimate gross decarburization ability and the good connection of existing combustion technology are easy to realize NO
X, SO
XEtc. the Collaborative Control of multiple pollutant, the financial cost of operation has suitable advantage, has become an important development direction the most competitive of coal combustion technology in this century beyond all doubtly.Because the oxygen combustion technology differs from the conventional air combustion supporting technology, working medium characteristic and flow condition generation great change produce significant impact to the coal dust firing characteristic.The variation of these fundamental characteristics causes oxygen-enriched burner to become one of core of this new technique.
Summary of the invention
The purpose of this utility model provides a kind of compact oxygen-enriched burner, and this burner improves combustion position, is easy to light, the steady after-flame of combustion and fuel, for NO
XLow emission good facilitation is also arranged.
A kind of compact oxygen-enriched burner that the utility model provides, it comprises the oil gun pipe of coaxial arrangement from the inside to the outside, wind rotational flow generator and secondary wind rotational flow generator; It is characterized in that, between wind rotational flow generator and secondary wind rotational flow generator, be provided with the oxygen injector;
The oxygen injector comprises oxygen cavity, oxygen intake pipe, oxygen hose, jet pipe, preceding obstacle ring and back obstacle ring, and oxygen intake pipe is positioned at an end of cavity, and the arrival end of oxygen hose links to each other with the other end of cavity; Jet pipe is positioned at the port of export of oxygen hose, and evenly distributes around an airduct, obstacle ring and back obstacle ring before the jet pipe two ends connect, the corresponding connection with jet pipe in the hole of two obstacle rings.
The utility model provides a kind of oxygen/circulating flue gas-coal dust firing atmosphere, and it and conventional air be combustion-supporting-and coal dust firing has very big difference, and the former with the latter has notable feature and difference, as CO
2High specific heat capacity, H
2O latent heat of vaporization effect, radiant heat transfer variation etc.In order to guarantee similar flame propagation velocity and features such as torch, ratio of momentum, effectively adapt to air-breathing and combustion-supporting transition and the smooth combustion of oxygen/circulating flue gas simultaneously, it is very important that the invention of utility model oxygen-enriched burner just seems.The oxygen volume fraction of tradition oxygen-enriched burner exceeds the 1-2% of conventional air burning approximately, and the maximum oxygen gas integration number of the utility model oxygen-enriched burner reaches 35-40%, the minimum 18-21% of reaching still can get the smooth combustion effect.
The utility model utilizes the high-speed jet and the oxygen method of salary distribution to carry out the pneumatic amount supply of flexible and changeable secondary, utilizes the obstacle ring to delay a secondary wind and mixes, strengthens the coal dust fugitive constituent and separate out.Utilize enlarging to form reasonable recirculating zone, it is stable to help fuel combustion.Complex optimum burning, reduction pollutant emission and summary burn-out degree.
Fuel tolerance of the present utility model is stronger, is mainly used in natural gas, coal dust and diesel combustion, has good technical, economy and environmental benefit, particularly to the CO of thermal power station and Industrial Stoves
2Reduce discharging and low NO
XPositive role is played in discharging.
Description of drawings
Fig. 1 (a) is the structural representation of the oxygen-enriched burner that provides of the utility model (b);
Fig. 2 (a) is the schematic diagram of optimizing structure of the oxygen-enriched burner that provides of the utility model (b);
Fig. 3 (a) is the example schematic of the oxygen-enriched burner that provides of the utility model (b);
Fig. 4 (a) is the example schematic of the oxygen-enriched burner that provides of the utility model (b);
Fig. 5 is a kind of tangential movably example schematic of cyclone that the utility model provides;
Fig. 6 is a kind of example schematic that is axially moveable cyclone that the utility model provides;
In the drawings: 1. obstacle rings 13. back obstacle ring 14. oil gun pipes 15. tertiary air cavitys 16. tertiary air air inlet pipe 17. tertiary-air pipe 18 before 3. airducts of 2. wind air inlet pipe of whirlwind bucket, 4. oxygen cavitys, 5. oxygen intake pipes, 6. oxygen hoses, 7. secondary wind cavitys, 8. secondary wind air inlet pipe, 9. secondary air channels, 10. cyclones, 11. jet pipes 12., oil gun pipe enlarging 19, secondary wind enlarging 20, regulating box 21, stationary gland 22, rotate gland 23, mover 24, stator 25, baffle 26, reamer section 27, deflector 28, in, outer endless tube 29, blade 30, drive link 31, semi-circular gear 32, round gear
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, a kind of oxygen high-speed jet oxygen-enriched burner of the present utility model comprises the oil gun pipe of coaxial arrangement, wind rotational flow generator, oxygen injector and secondary wind rotational flow generator four parts.Oil gun pipe, wind rotational flow generator, oxygen injector and a secondary wind rotational flow generator are arranged from the inside to the outside successively.
Wind rotational flow generator comprises that whirlwind bucket 1, wind air inlet pipe 2 and 3, wind air inlet pipe 2 of an airduct are positioned on the whirlwind bucket 1, and one time airduct 3 links to each other with whirlwind bucket 1.
The oxygen injector comprises oxygen cavity 4, oxygen intake pipe 5, oxygen hose 6, jet pipe 11, preceding obstacle ring 12 and back obstacle ring 13, and oxygen intake pipe 5 is positioned at an end of cavity 4, and the arrival end of oxygen hose 6 links to each other with the other end of cavity 4.Jet pipe 11 is positioned at the port of export of oxygen hose 6, and evenly distributes around an airduct 3, the jet pipe number be 3～12 more reasonable.The hole and jet pipe 11 corresponding connections of obstacle ring 12 and back obstacle ring 13, two obstacle rings before jet pipe 11 two ends connect.The obstacle ring effectively delays a secondary wind to be mixed, and helps strengthening the degree of coal dust devolatilization burning.
Secondary wind rotational flow generator comprises secondary wind cavity 7, secondary wind air inlet pipe 8 and secondary air channel 9 and cyclone 10.Secondary wind air inlet pipe 8 is positioned on the end of secondary wind cavity 7, and secondary air channel 9 links to each other with the other end of secondary wind cavity 7, is provided with cyclone 10 in secondary wind cavity 7.
Specify the course of work and the effect of the described burner of Fig. 1.
The course of work of the described burner of Fig. 1: the built-in torch oil gun of oil gun pipe, the fuel oil baker, one time wind rotational flow generator, oxygen injector and secondary wind rotational flow generator are sent combustion-supporting gas into burner hearth, cooperate oil gun to carry out auxiliary combustion.After fire box temperature was elevated to uniform temperature, a wind began pulverized coal conveying and burns, and stops oil gun, adjusted and the smooth combustion of maintenance coal dust.Oxygen injector and secondary wind rotational flow generator carry combustion-supporting gas to carry out auxiliary combustion, and the oxygen injector is stopped using or carried the air or oxygen high-speed jet to carry out auxiliary combustion.During conventional air-coal dust firing, wind, oxygen injector and a secondary wind rotational flow generator are carried the air after the heating.During the utility model oxygen/circulating flue gas-coal dust firing, wind rotational flow generator delivery cycle flue gas and coal dust, oxygen injector delivery cycle flue gas and part purity oxygen or purity oxygen, air-flow can form high-speed jet through jet pipe and carry out combustion-supporting, about 40～the 150m/s of velocity interval, effluxvelocity depends on required working condition requirement, regulates oxygen injector volume flow and jet pipe number, and effluxvelocity can change fast.The control of oxygen injection mode and speed can be satisfied a secondary wind ratio of momentum and efficiently regulate.Secondary wind cyclone delivery cycle flue gas or circulating flue gas and part purity oxygen carry out auxiliary combustion, in the secondary wind cavity 7 cyclone 10 is arranged, its effect is to regulate secondary wind swirling number, during the utility model oxygen/circulating flue gas-coal dust firing, cooperating high-speed jet to carry out a secondary wind ratio of momentum regulates, get the effect of optimizing combustibility, reach high burn-out degree, flame propagation similitude, the torch class same sex, low pollutant emission and high CO with this
2The steady combustion effect of enrichment.
Cyclone 10 can be tangential movable manner or be axially moveable mode.The cyclone of tangential movable manner utilizes mover and stator to cooperate and forms adjustable swirling eddy, and the mode of being axially moveable utilizes the blade movable manner to form adjustable swirling eddy.Blade is prismatic blade or bent blade or twisted blade.Can connect enlarging at each layer port of export, flared type can be the outer enlarging of straight type or bent type, and enlarging helps fully burning of smooth combustion, fuel and strengthen fugitive constituent deviating from.
The utility model can also adopt following manner to optimize the structure and the performance of burner.
As Fig. 2 (a) (b) shown in, coaxial installation tertiary air generator between wind rotational flow generator and oil gun pipe.The tertiary air generator comprises tertiary air cavity 15, tertiary air air inlet pipe 16 and tertiary-air pipe 17, and tertiary air air inlet pipe 16 is positioned on the tertiary air cavity 15, and tertiary-air pipe 17 links to each other with tertiary air cavity 15.Also cyclone 10 can be installed in the tertiary air cavity 15, the mode of employing can be movably tangential or be axially moveable mode.Each layer wind tube outlet end can be installed enlarging.One time airduct 3 also can be installed dense-and-weak separator, and dense-and-weak separator can be a ring-type, helps coal powder light-dark and separates and catch fire.Burner ratio of momentum adjustability after the optimization strengthens, Air thing NO
XDischarging lower relatively, a secondary wind mixes and more fully reaches fuel and be easier to burn.
Example 1
As Fig. 3 (a) (b) shown in, burner comprises oil gun pipe, wind rotational flow generator, oxygen injector and secondary wind rotational flow generator four parts, each autonomous agent connector of four parts and mode are as described in to Fig. 1.Oxygen hose 6 ports of export have connected reamer section 26, and oil gun pipe 14 connects oil gun pipe enlarging 18, and secondary air channel 9 ports of export connect secondary wind enlarging 19.Cyclone 10 is constructed by tangential movable manner, comprises regulating box 20, drive link 30, stationary gland 21, rotates gland 22, mover 23, stator 24 and baffle 25.Regulating box 20 is installed in secondary wind cavity 7 one ends, drive link 30 1 ends link to each other with regulating box 20, the other end connects the semi-circular gear that links to each other on round gear 32 and the meshing rotation gland 22, rotate gland 22 lower ends and connecting the equally distributed mover 23 of coaxial circumference, the stator 24 that is connected with the lower end is meshing in pairs.Stator and rotor logarithm are 3～8 pairs and are cyclone function the best.Rotate the coaxial stationary gland 21 that connecting in gland 22 upper ends, as shown in Figure 5.
The port of export of a wind rotational flow generator can be installed straight type deflector 27, evenly distributes around axially, and the effect of deflector is to revolve a little less than making a wind that band revolves be converted into even a wind of irrotationality.The effect of whirlwind bucket 1 is a feasible wind that tangentially enters, pulverized coal conveying enters whirlwind bucket 1, principle according to centrifugal force, the bulky grain coal dust can rotate and get rid of to close whirlwind bucket 1 internal face one side, the granule coal dust can rotatablely move with air-flow near the center because inertia is less relatively, and size particles all enters airduct 3 one time under the rolling action of a wind of rotation, via the deflector water conservancy diversion, make and revolve a little less than wind even the irrotationality mode carries the coal dust after the deep or light separation to enter the stove internal combustion.
Each layer outlet pipe end can be installed enlarging, and flared type can be outer enlarging of straight type or the outer enlarging of bent type.Enlarging can effectively improve the recirculating zone size, help smooth combustion.
The concrete course of work of example 1 is as follows:
When conventional air-coal dust firing, torch oil gun is placed in igniting baker in the oil gun pipe 14, after reaching the interior temperature of certain stove, one time the wind rotational flow generator is sent into from a wind air inlet pipe 2 by the air pulverized coal conveying, send to air deflector via whirlwind bucket 1 and airduct 3 eddy flows, by the deflector effect along axial installation, a wind of weak eddy flow even irrotationality is carrying the coal dust after the deep or light separation to enter the burner hearth burning.What the oxygen injector was carried is air draught, produce required jet via oxygen injector outlet jet pipe 11, secondary wind is as main combustion-supporting gas, send in the secondary wind cavity 7 via secondary wind air inlet pipe 8, transfer regulating box 20, driving drive link 30 rotates, the gear driven that makes drive link 30 connect rotates the gear on the gland 22, make that rotating gland 22 drives mover 23 rotations that connecting, thereby the conduit discharge area that cooperates stator 24 to form airflow changes, airflow volume flow one regularly, the conduit muzzle velocity just changes thereupon, thereby produces the secondary wind of different swirling numbers, again in conjunction with jet and a wind, regulate a secondary wind ratio of momentum, optimize conventional air coal dust firing.
When the utility model oxygen/circulating flue gas-coal dust firing, the igniting baker, regulate secondary wind rotational flow generator mode all with above-mentioned conventional air-coal dust firing, the combustion-supporting atmosphere difference of carrying just.A wind rotational flow generator is via the circulating flue gas pulverized coal conveying, and oxygen injector and secondary wind rotational flow generator are all via circulating flue gas or circulating flue gas and part purity oxygen or purity oxygen.One secondary wind ratio of momentum is regulated also with above-mentioned conventional air-breathing.The swirling number upper limit of cyclone 10 is adjustable in the example 1, resistance is bigger, and member is accurate.
Example 2
As Fig. 4 (a) (b) shown in, burner also comprises oil gun pipe, wind rotational flow generator, oxygen injector and secondary wind rotational flow generator four parts, except the cyclones 10 in the secondary wind cavity 7 be different from the example 1 Fig. 3 (a) (b), all the other connected modes are identical with function.Cyclone 10 is constructed by the mode of being axially moveable, and comprises regulating box 20, drive link 30, endless tube 28 and blade 29.Regulating box 20 is installed in secondary wind cavity 7 one ends, drive link 30 1 ends link to each other with regulating box 20, the other end links to each other with blade 29, blade 29 even circumference are installed between the inside and outside endless tube 28, inside and outside endless tube 28 plays the effect of fixed blade 29, the outer surface of endless tube in the bottom of blade all is fixed on, the top of blade all is fixed on the inner surface of outer endless tube, as shown in Figure 6.The method of operation of cyclone 10 is to rotate regulating box 20 valves, and drive link 30 promotes or descends, and the blade 29 and the part that links to each other will rise or descend together, and secondary wind part air-flow circulates between the blade, and another part air-flow is walked around blade and directly entered oxygen hose.Combustion-supporting for conventional air-breathing and the utility model oxygen/circulating flue gas, mode and the member of regulating delivery air and coal dust are connected with example 1, except cyclone 10 is different from example 1.The swirling number upper limit of cyclone 10 is that definite value, resistance are less in the example 2, and member is simple.
The above is preferred embodiment of the present utility model, but the utility model should not be confined to the disclosed content of this embodiment and accompanying drawing.So everyly do not break away from the equivalence of finishing under the spirit disclosed in the utility model or revise, all fall into the scope of the utility model protection.
Claims (8)
1. compact oxygen-enriched burner, it comprises the oil gun pipe of coaxial arrangement from the inside to the outside, wind rotational flow generator and secondary wind rotational flow generator; It is characterized in that, between wind rotational flow generator and secondary wind rotational flow generator, be provided with the oxygen injector;
The oxygen injector comprises oxygen cavity (4), oxygen intake pipe (5), oxygen hose (6), jet pipe (11), preceding obstacle ring (12) and back obstacle ring (13), oxygen intake pipe (5) is positioned at an end of cavity (4), and the arrival end of oxygen hose (6) links to each other with the other end of cavity (4); Jet pipe (11) is positioned at the port of export of oxygen hose (6), and evenly distributes around an airduct (3), obstacle ring (12) and back obstacle ring (13) before jet pipe (11) two ends connect, the hole of two obstacle rings and the corresponding connection of jet pipe (11).
2. compact oxygen-enriched burner according to claim 1 is characterized in that,
One time the wind rotational flow generator comprises whirlwind bucket (1), a wind air inlet pipe (2) and an airduct (3), and a wind air inlet pipe (2) is positioned at an end of whirlwind bucket (1), and an airduct (3) links to each other with the other end of whirlwind bucket (1);
Secondary wind rotational flow generator comprises secondary wind cavity (7), secondary wind air inlet pipe (8) and secondary air channel (9) and cyclone (10); Secondary wind air inlet pipe (8) is positioned on the end of secondary wind cavity (7), and secondary air channel (9) links to each other with the other end of secondary wind cavity (7), is provided with cyclone (10) in secondary wind cavity (7).
3. compact oxygen-enriched burner according to claim 1 is characterized in that,
Coaxial installation tertiary air generator between wind rotational flow generator and oil gun pipe; The tertiary air generator comprises tertiary air cavity (15), tertiary air air inlet pipe (16) and tertiary-air pipe (17), tertiary air air inlet pipe (16) is positioned at an end of tertiary air cavity (15), and tertiary-air pipe (17) links to each other with the other end of tertiary air cavity (15).
4. compact oxygen-enriched burner according to claim 3 is characterized in that, tertiary air cavity (15) is equipped with cyclone (10).
5. compact oxygen-enriched burner according to claim 2 is characterized in that,
Oxygen hose (6) port of export is connected with reamer section (26), and oil gun pipe (14) connects oil gun pipe enlarging (18), and secondary air channel (9) port of export connects secondary wind enlarging (19).
6. according to claim 2 or 5 described compact oxygen-enriched burners, it is characterized in that cyclone (10) comprises regulating box (20), drive link (30), stationary gland (21), rotates gland (22), mover (23), stator (24) and baffle (25);
Regulating box (20) is installed in secondary wind cavity (7) one ends, drive link (30) one ends link to each other with regulating box (20), the other end connects round gear (32) and meshing rotation gland (22) is gone up the semi-circular gear (31) that links to each other, rotate gland (22) lower end and connecting the equally distributed mover of coaxial circumference (23), the stator that is connected with the lower end (24) is meshing in pairs, rotates the coaxial stationary gland (21) that connecting in gland (22) upper end.
7. according to claim 1,2 or 3 described compact oxygen-enriched burners, it is characterized in that the port of export of a wind rotational flow generator is equipped with straight type deflector (27).
8. according to claim 2 or 5 described compact oxygen-enriched burners, it is characterized in that,
Cyclone (10) comprises regulating box (20), drive link (30), endless tube (28) and blade (29); Regulating box (20) is installed in secondary wind cavity (7) one ends, drive link (30) one ends link to each other with regulating box (20), the other end links to each other with blade (29), blade (29) evenly circumference is installed between the inside and outside endless tube (28), and inside and outside endless tube (28) plays the effect of fixed blade (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202068504U CN201803364U (en) | 2010-05-28 | 2010-05-28 | Compact type oxygen-enriched combustor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202068504U CN201803364U (en) | 2010-05-28 | 2010-05-28 | Compact type oxygen-enriched combustor |
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| CN201803364U true CN201803364U (en) | 2011-04-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322633A (en) * | 2011-09-16 | 2012-01-18 | 徐州燃控科技股份有限公司 | Pure-oxygen pulverized coal entraining combustor |
| CN106949469A (en) * | 2016-01-06 | 2017-07-14 | 北京礡德恒激光科技有限公司 | A kind of high-power flame combustion fuel conveying injector head |
| CN107255271A (en) * | 2017-07-28 | 2017-10-17 | 吉林大学 | A kind of coal-fired boiler in power plant blowing system with spiral air-supply passage |
| CN114659103A (en) * | 2022-04-11 | 2022-06-24 | 西安热工研究院有限公司 | Flue gas recirculation oxygen boosting combustor suitable for degree of depth peak regulation |
-
2010
- 2010-05-28 CN CN2010202068504U patent/CN201803364U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322633A (en) * | 2011-09-16 | 2012-01-18 | 徐州燃控科技股份有限公司 | Pure-oxygen pulverized coal entraining combustor |
| CN106949469A (en) * | 2016-01-06 | 2017-07-14 | 北京礡德恒激光科技有限公司 | A kind of high-power flame combustion fuel conveying injector head |
| CN106949469B (en) * | 2016-01-06 | 2019-05-10 | 北京礴德恒激光科技有限公司 | A kind of high-power flame combustion fuel conveying injector head |
| CN107255271A (en) * | 2017-07-28 | 2017-10-17 | 吉林大学 | A kind of coal-fired boiler in power plant blowing system with spiral air-supply passage |
| CN107255271B (en) * | 2017-07-28 | 2023-05-05 | 吉林大学 | Power plant coal-fired boiler air distribution system with spiral air supply channel |
| CN114659103A (en) * | 2022-04-11 | 2022-06-24 | 西安热工研究院有限公司 | Flue gas recirculation oxygen boosting combustor suitable for degree of depth peak regulation |
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Granted publication date: 20110420 |
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