CN202066024U - Six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor - Google Patents
Six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor Download PDFInfo
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- CN202066024U CN202066024U CN2010206579833U CN201020657983U CN202066024U CN 202066024 U CN202066024 U CN 202066024U CN 2010206579833 U CN2010206579833 U CN 2010206579833U CN 201020657983 U CN201020657983 U CN 201020657983U CN 202066024 U CN202066024 U CN 202066024U
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Abstract
The utility model discloses a six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor, which relates to a combustor, in particular to a multi-fuel combustor taking pulverized coal and fuel gas as fuels and a single-fuel combustor taking pulverized coal or fuel gas as a fuel. The center of a combustor shell is provided with a conical-ring flame stabilizer; the small end of the flame stabilizer is connected with a central air pipe and a coal gas pipe; the outer wall of the coal gas pipe is connected with a fuel gas mixer; the mixer is provided with a waist circular mixing hole, an air hole and a gas annular aperture; the outer wall of the other end of the coal gas pipe is provided with a volute whirlcone and an adjusting pull rod; the outer layer of the coal gas pipe is provided with a flame path, a primary air channel, a secondary air channel and a clean air channel; the secondary air channel and the clean air channel are provided with whirlcones and conical air spray holes respectively; the outer walls of the outlets of a clean air inner pipe and a secondary air inner pipe are provided with taper angles expanding outwards by 15-20 degrees; the outlet carrying area can be changed axially optionally to change the speed of air current; and the flame stabilizer can be moved axially to change the angle of a central air outlet. Stepless regulation of thermal load flame shape is realized, and the burning temperature is organically combined with the process condition. The six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor is an efficient and energy-saving pulverized coal and fuel gas burning device with low NOX emission.
Description
Technical field:
The present invention relates to a kind of burner, particularly is the burner of the multifuel combustion of fuel or coal dust, combustion gas single fire with coal dust, combustion gas.
Background technology:
Present chemical building material industry calcined by rotary kiln, generally by burner with coal dust or combustion gas, one time wind, secondary wind are sent into the kiln internal combustion, often find that in combustion process the black duration and degree of heating of burner outlet is long, this phenomenon is that coal dust firing speed is slow, does not have completing combustion, and nitrogen and oxygen molecule are longer in the flame high-temperature region time of staying, so, form NO
xChance is many, and growing amount is also big.Its two coal dust and air mix at the coal powder injection pipe, spray into the kiln internal combustion by annular nozzle, at this moment the burning of coal dust is mainly by a wind, the oxygen supply of secondary wind, generally will consume a large amount of oxygen at coal dust fugitive constituent combustion phases, and be diffused into flame kernel hyperoxia district, pass the very thick zone of flame or coal dust layer, very big resistance need be overcome and just the center can be reached, thus often this district's severe depletion of oxygen, a large amount of carbon granules, be that fixed carbon and CO can not burn at clinkering zone, it is not high to cause burning zone temperature to carry, and influences grog and produces, quality increases heat consumption of clinker, waste energy, generate NO simultaneously
xPernicious gas.Oxynitrides (NO
x) be the primary pollution source that causes atmosphere pollution, it destroys ecological environment except forming acid rain, can also form photochemical fog, harm humans health.Coal is NO
xOne of main source, in order to control serious day by day NO
xPollute, State Bureau of Environmental Protection on March 7th, 1996 song cloth " thermal power plant's atmosphere pollutants emission standards " (GB13223-26), clearly stipulated 300kw and above unit stationary state deslagging coal-powder boiler NO in the standard
xDischarge capacity must not surpass 650Mg/M
3Also stipulate present China residential block, NO in the atmosphere
xThe highest permission daily mean of concentration be 0.10 milligram/meter 3,0.15 milligram/meter 3 of disposable concentration.If do not take low NO
xEmission measure is difficult to satisfy NO
xEmission request." People's Republic of China's air contaminant treatment method " that on September 1st, 2000 carried out also proposed NO
xThe control emission requirement.NO
xControl mainly contains two kinds of approach, and the one, adopt the low NO technology to reduce NO
xGeneration, the 2nd, from flue gas, remove NO
xUnder the present economic level of China, the former is comparatively effective, economically viable method; The latter's subject matter is to invest too highly, is not suitable for China's national situation.Coal dust, combustion gas multifuel combustion or coal dust, combustion gas single fire burner occupy certain ratio in the calcining of China chemical building material industrial rotary kiln and other coal dust, combustion gas application.Along with the development of China chemical building material industry and the requirement of environmental pollution, the development of new combustion technology there is urgent requirement.Therefore NO is hanged down in research
x, high heat coal dust, the combustion gas burner technology of imitating, the development of China's chemical industry, building materials, machinery industry and whole national economy is all had crucial meaning.
Summary of the invention:
For solving is the burner NO of fuel with coal dust, combustion gas at present
xHeight, the problem that the thermal efficiency is low, the present invention develops the steady flame step-less adjustment of a kind of six passage eddy flows multifuel combustion burner.The objective of the invention is to realize in the following manner: in the center of burner shell 1, be equipped with conical ring flame holder 9, conical ring flame holder microcephaly and central air hose 15, the front end of gas pipe 12 connects, the other end of central air hose 15 is connected with spiral case cyclone 34, peephole 35, the pipe outer wall is connected with flange 33,12 front tube outer wall garden weeks of Gas Pipe are shaped on gas vent 43, front center is connected with fuel gas mixer 17, blender is shaped on waist garden mix aperture 18, waist garden airport 20, combustion gas circumferential weld 19, the outer garden of blender can be managed 11 inwalls and be moved axially in a wind, Gas Pipe 12 other ends are connected with gas supply pipe 30, flange 32, the pipe outer wall is connected with adjusting yoke 31, flange 29, flange 32 is connected with flange 33.Pipe 11 rear ends are connected with ajutage 37, flange 28 in the wind, and flange 28 is connected with flange 29.Pipe 4 exit outer walls are shaped on cyclone 6 in the secondary wind, and the pipe outer wall is shaped on and expands outwardly 15-20 ° of cone angle, and the rear end is connected with coal dust carrier pipe 27, flange 39, flange 39 and is connected with method method 38, manages outer wall and is connected with adjusting yoke 26, flange 25.Pipe 2 in the clean wind, the front end outer wall is shaped on air distributor 5, air distributor is shaped on taper spray orifice 3, and the exit outer wall is shaped on and expands outwardly 15-20 ° of cone angle, and the rear end is connected with air delivery pipe 40, the pipe outer wall is connected with adjusting yoke 23, flange 24, flange 24 is connected with flange 25, and housing 1 inwall exit is shaped on to 15-20 ° of cone angle of K expansion, and the housing middle part is connected with air delivery pipe 41, tail end is connected with flange 21, and flange 21 is connected with flange 22.The main points of the invention are: the burner kerosene Lun ， Cone ring flame holder 9 of not setting up an office in addition places the housing center.Combustion gas multifuel combustion or gas ignition burning quirk 13 is located at the skin of burner central air hose 16, and the inside and outside conical ring of flame holder is centering wind passage 16 and combustion gas quirk 13 export center respectively, act on the adjusting of flame angle and flame profile.During burner operation, the eddy flow wind that eddy flow wind is sent here from center wind duct 16 enters in the conical ring flame holder 9 behind the conical rings, is diffused in the flame kernel district, circulates in forming one.Because center wind is cold wind, goes in the kiln, makes kiln flow field attenuation process obviously slack-off, be included in the interior coal dust of primary air jet and the contact-making surface of secondary wind and reduce, increase simultaneously, do not weaken but mix fierce degree, therefore, can reduce NO in the waste gas
xContent.Secondary wind, center wind, logical 8 by secondary wind respectively, center wind duct 16 enter the ratio of kiln internal combustion district (not drawing among the figure) by two strands of wind of control valve (not drawing among the figure) change.Cyclone 6, spiral case cyclone 34 make the wind rotation, form the recirculating zone, center in the central area of burner.Because secondary wind, center wind have been divided into inside and outside two partly, thereby have formed fractional combustion, combine with the coal dust that is clipped in the middle wind passage 8 of two strands of wind, realize low NOx drainage.Because recirculating zone, center temperature height, the initial stage of coal dust firing is a dynamic combustion, is increased in the coal dust amount of the recirculating zone, center of high temperature, prolongs coal dust in the time of staying of the recirculating zone, center of high temperature, and therefore favourable coal dust after-flame, improves efficiency of combustion.Combustion gas, enter circumferential weld 19 by blast tube 14, become an angle of 90 degrees to force mutually with the air in air Yao Yuan hole 20, air velocity is 1.5-1.8 with the gas flow rate ratio, therefore air has ejector action to combustion gas, promote the two to mix strongly, mist enters quirk 13 burnings through waist garden mix aperture 18, and the secondary combustion gas is flowed out by fuel gas hole 40, the oxygen remaining with quirk 13 burning backs becomes 90 degree to force mutually, mix once more, realize high-velocity combustion, high-speed flame heating coal dust root under the effect of conical ring flame holder 9 outer cones, make simultaneously the coal dust sectional combustion again, therefore, improve combustion thermal efficiency, reduce NOx and generate.Regulate by adjusting yoke 31, conical ring flame holder 9 is moved axially, change the flame combustion angle, thereby change flame profile.Outer clean wind is sent into by clean air channel 7, and through taper spray orifice 3 ejection at a high speed, air-flow enters the flame root from the slit of the aperture of being separated by, and it is strong that flame is concentrated, and makes CO simultaneously
2The burning gases that content is high reflux at the flame root, reduce O
2Content avoids generating NO
xGas improves the thermal efficiency simultaneously.During burner operation, can regulate by adjusting yoke 23,26, make respectively in the clean wind and manage 4 in pipe 2, the secondary wind, move axially, change clean wind passage 7, secondary air duct 8 outlet sections amass, thereby change different air velocities, under the cooperation of air flow rate adjustment valve, realize thermic load and the electrodeless adjusting of flame profile.The present invention is a kind of efficient, low NO
xDischarging, energy-efficient burner.
Description of drawings:
Fig. 1 is a structural representation of the present invention:
Fig. 2 is Figure 1A-A cutaway view.
The specific embodiment: consult Fig. 1, Fig. 2, present embodiment by manage 2 in burner shell 1, the clean wind, manage 4 in the air distributor 5, taper spray orifice 3, secondary wind, manage in the cyclone 6, wind 11, Gas Pipe 12, fuel gas mixer 17, conical ring flame holder 9, central air hose 15, spiral case stream device 34 form.In housing 1 center, be equipped with conical ring flame holder 9, the flame holder microcephaly is connected with central air hose 15, gas pipe 12, the other end of central air hose 15 is connected with spiral case cyclone 34, peep hole 35, the pipe outer wall is connected with flange 33.Gas Pipe 12, front tube outer wall garden week is shaped on gas vent 43, and front center is connected with fuel gas mixer 17, and blender is shaped on waist garden mix aperture 18, waist garden airport 20, combustion gas circumferential weld 19, the outer garden of blender can be managed 11 inwalls and be moved axially in a wind, gas pipe 12 rear ends are connected with gas conveying tube 30, flange 32, and flange 32 is connected with flange 33, the pipe outer wall is equipped with adjusting yoke 31, flange 29, an end of adjusting yoke is connected with the plane of connection orchid 29, and the other end is connected with the pipe outer wall.The endoporus of flange 29 has certain fit clearance with the pipe outer wall, manages outer wall energy and moves axially at the flange endoporus.The rear end of an interior pipe 11 of wind is connected with ajutage 37, flange 28, and flange 28 is connected with flange 29.Pipe 4 in the secondary wind, the front end outer wall is shaped on cyclone 6, the exit outer wall is shaped on and expands outwardly 15-20 degree cone angle, the rear end is connected with coal dust carrier pipe 27, flange 39, flange 39 is connected with flange 38, the pipe outer wall is connected with adjusting yoke 26, flange 25, and adjusting yoke 26 1 ends are connected with the plane of flange 25, and an end is connected with the pipe outer wall.Flange 25 endoporus have certain fit clearance with the pipe outer wall, manage outer wall energy and move axially at the flange endoporus.The front end of pipe 2 is shaped on air distributor 5 in the clean wind, and distributor is shaped on taper spray orifice 3, and the exit outer wall is shaped on and expands outwardly 15-20 degree cone angle, and the rear end is connected with air delivery pipe 40, flange 24, and flange 24 is connected with flange 25.The pipe outer wall is connected with adjusting yoke 23, flange 22, and adjusting yoke one end is connected with the plane of flange 22, and the other end is connected with the pipe outer wall.The endoporus of flange 22 has certain fit clearance with the pipe outer wall, manage outer wall energy and move axially at the flange endoporus, housing 1 inwall exit is shaped on to K expansion 15-20 degree cone angle, and the housing middle part is connected with air delivery pipe 41, tail end is connected with flange 21, and flange 21 is connected with flange 22.Burning structure of the present invention, can many formulas various, big as combustion gas for amount; Can adopt the external burning of combustion gas, otherwise can adopt built-in combustion, coal dust or combustion gas single fire also can be set.
From the above mentioned: the present invention uses on various kilns, can promote coal dust, combustion gas smooth combustion effectively, reduces NO
xDischarging, improve the thermal efficiency, can also realize thermic load and flame profile step-less adjustment, ignition temperature and process condition are organically combined, the requirement of adaptation different process.Therefore the present invention is a kind of energy-efficient, NO
xLow emission, energy-saving and environmental protection type burner.
Claims (4)
1. passage eddy flow step-less adjustment multifuel combustion burner, it is characterized in that in burner shell (1) center, be equipped with conical ring flame holder (9), conical ring flame holder microcephaly and central air hose (15), the front end of gas pipe (12) connects, the other end of central air hose (15) is connected with spiral case cyclone (34), peephole (35), the pipe outer wall is equipped with flange (33), gas pipe (12) front tube outer wall garden week is shaped on gas vent (43), front center is connected with blender (17), blender is shaped on coal gas mix aperture (18), airport (20), coal gas circumferential weld (19), the outer wall energy of blender is managed (11) inwall and is moved axially in a wind, the outer wall energy of gas pipe moves axially at flange (29) endoporus, gas pipe (12) rear end is connected with gas conveying tube (30), flange (32), the pipe outer wall is connected with adjusting yoke (31), flange (29), flange (32) is connected with flange (33).
2. the steady flame step-less adjustment of a kind of six passage eddy flows according to claim 1 multifuel combustion burner, it is characterized in that in housing (1), being connected with in a wind and manage pipe (2) in pipe (4) in (11), the secondary wind, the clean wind, pipe (4) exit outer wall is shaped on cyclone (6) in the secondary wind, pipe (2) exit outer wall is equipped with air distributor (5) in the clean wind, and distributor is shaped on taper spray orifice (3).
3. the steady flame step-less adjustment of a kind of six passage eddy flows according to claim 1 and 2 multifuel combustion burner, it is characterized in that being shaped on to 15-20 ° of cone angle of K expansion in housing (1) inwall exit, pipe (2) in pipe (4), the clean wind in the secondary wind, the exit outer wall also is shaped on respectively and expands outwardly 15-20 ° of cone angle.
4. the steady flame step-less adjustment of a kind of six passage eddy flows according to claim 3 multifuel combustion burner is characterized in that secondary wind outer wall of inner tube and clean wind outer wall of inner tube can move axially at flange (25), (22) endoporus respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206579833U CN202066024U (en) | 2009-12-31 | 2010-12-01 | Six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273466 | 2009-12-31 | ||
| CN200910273466.8 | 2009-12-31 | ||
| CN2010206579833U CN202066024U (en) | 2009-12-31 | 2010-12-01 | Six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor |
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| Publication Number | Publication Date |
|---|---|
| CN202066024U true CN202066024U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206579833U Expired - Fee Related CN202066024U (en) | 2009-12-31 | 2010-12-01 | Six-channel rotational-flow stable-flame stepless regulation multi-fuel combustor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434885A (en) * | 2011-12-15 | 2012-05-02 | 新兴河北工程技术有限公司 | Six-channel nozzle for industrial kiln |
| CN102620295A (en) * | 2012-04-13 | 2012-08-01 | 西安康桥能源技术有限责任公司 | Industrial radial concentration dual-air regulation rotational flow coal powder and fuel gas mixed combustor |
| CN102767824A (en) * | 2012-07-06 | 2012-11-07 | 南阳市沧田工程机械有限公司 | Novel efficient pulverized coal combustion device |
| CN103629705A (en) * | 2012-08-20 | 2014-03-12 | 陈绪忠 | Spiral-flow type fishtail high-efficiency energy-saving burner |
| CN103808143A (en) * | 2012-11-07 | 2014-05-21 | 梁燕龙 | Premixing type telescopic combustion device and method |
-
2010
- 2010-12-01 CN CN2010206579833U patent/CN202066024U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434885A (en) * | 2011-12-15 | 2012-05-02 | 新兴河北工程技术有限公司 | Six-channel nozzle for industrial kiln |
| CN102620295A (en) * | 2012-04-13 | 2012-08-01 | 西安康桥能源技术有限责任公司 | Industrial radial concentration dual-air regulation rotational flow coal powder and fuel gas mixed combustor |
| CN102620295B (en) * | 2012-04-13 | 2014-10-22 | 西安康桥能源技术有限责任公司 | Industrial radial concentration dual-air regulation rotational flow coal powder and fuel gas mixed combustor |
| CN102767824A (en) * | 2012-07-06 | 2012-11-07 | 南阳市沧田工程机械有限公司 | Novel efficient pulverized coal combustion device |
| CN102767824B (en) * | 2012-07-06 | 2015-08-05 | 南阳市沧田工程机械有限公司 | A kind of new and effective coal powder burner |
| CN103629705A (en) * | 2012-08-20 | 2014-03-12 | 陈绪忠 | Spiral-flow type fishtail high-efficiency energy-saving burner |
| CN103629705B (en) * | 2012-08-20 | 2016-03-02 | 陈绪忠 | Spiral-flow type fan flame efficiency energy saving burner |
| CN103808143A (en) * | 2012-11-07 | 2014-05-21 | 梁燕龙 | Premixing type telescopic combustion device and method |
| CN103808143B (en) * | 2012-11-07 | 2017-08-15 | 梁燕龙 | Premixed telescopic burner and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |