CN103017160B - A kind of start-up burner of pure oxygen combustion-supporting - Google Patents

A kind of start-up burner of pure oxygen combustion-supporting Download PDF

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Publication number
CN103017160B
CN103017160B CN201310014973.6A CN201310014973A CN103017160B CN 103017160 B CN103017160 B CN 103017160B CN 201310014973 A CN201310014973 A CN 201310014973A CN 103017160 B CN103017160 B CN 103017160B
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Prior art keywords
oxygen
burner
combustion
cylinder
spout
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CN103017160A (en
Inventor
唐宏
龚泽儒
刘鹏
吴海江
刘广义
杨金杰
雷刚
张世凯
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Yantai Longyuan Power Technology Co Ltd
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Yantai Longyuan Power Technology Co Ltd
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Publication of CN103017160A publication Critical patent/CN103017160A/en
Priority to PCT/CN2014/070426 priority patent/WO2014110996A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D1/00Burners for combustion of pulverulent fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007Supplying oxygen or oxygen-enriched air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D2207/00Ignition devices associated with burner
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The present invention relates to a kind of start-up burner of pure oxygen combustion-supporting, comprise burner and incendiary source, the rear end of described burner is connected with fuel gas flow channel, described incendiary source front end outside is provided with one-level cylinder, the front end outside of described one-level cylinder is provided with secondary cylinder, described secondary cylinder is arranged on the inside of described burner at least partly, and at least one place in the middle of spout, the spout of secondary cylinder and the spout of burner of one-level cylinder is provided with oxygen is directly sprayed to the oxygen spray device to flame combustion region. The present invention sprays into pure oxygen after coal powder ignition, and overheavy firing has solved the enough and problem of subsequent combustion deficiency of colm when igniting ignition energy; Burner structure of the present invention is reasonable, and steady operation and slagging scorification burning damage accident does not occur for a long time, is applicable to the igniting pulverized coal burner of all internal combustions, comprises the start-up burners such as plasma ignition burner and small oil gun, tiny-oil ignition.

Description

A kind of start-up burner of pure oxygen combustion-supporting
Technical field
The present invention relates to a kind of start-up burner equipment, particularly relate to a kind of point of pure oxygen combustion-supportingIgnition combustor.
Background technology
Traditional large coal powder boiler igniting and steady combustion all adopt burning diesel oil or heavy oil to realize, the startup of station boiler, stop need to consuming a large amount of fuel oils with low-load combustion-stabilizing. In recent yearsCome, along with increasingly sharpening of petroleum resources anxiety, fuel price rises steadily, and brings to power plantHeavy financial burden. Cost-saving for reducing oil consumption, part prior art has adopted plasmaBody non-oil ignition technology and tiny-oil ignition technology, and obtained extensively should on a lot of station boilersWith.
But in actual engineering application, plasma and tiny-oil ignition technology still exist oneA little not enough:
The first, to having relatively high expectations of ature of coal. Ature of coal dependence is larger, at present in successful ApplicationLot of examples in, most is the station boiler taking bituminous coal and brown coal as steam coal. And it is inferiorCoal volatile matter content is low, ignition temperature is high, flame propagation velocity is low, needs higher while lightingIgnition heat. Existing plasma and tiny-oil ignition Technology Energy are limited, be difficult to colm to light,So, in the time that lighting a fire, colm still needs to drop into great amount of fuel oil combustion-supporting, and oil-saving effect has been subject toVery large restriction.
The second, higher to working condition requirement. When ignition of the boiler, conventionally need to adopt higher coal dustConcentration, lower wind speed; In the time that operating mode changes, be prone to unstable combustion, even occurFire-putting-out emergency.
The 3rd, the efficiency of combustion of coal dust is lower. The situation of actual motion shows, in ignition of the boilerIn process, the phosphorus content of flying dust is high, and a large amount of coal dusts do not have after-flame, gives back-end ductwork and equipmentBring potential safety hazard, have a strong impact on security and the economy of boiler. According to research, oxygen energyEnough reduce fuel fire temperature, improve combustion zone flame blackness, improve flame propagation velocity.Therefore, Many researchers is introduced comburant oxygen in plasma-ignition technique. As Chinese patent" oxygen enrichment plasma non-oil ignition smooth burning method and device " is (CN201110105569.0) with " onePlant plasma oil-free ignition combustor " (CN201110442988.3),
Patent CN201110105569.0 as shown in Figure 1, by oxygen spout 16 along a general moodFlow path direction is located at the upstream of plasma generator 2, oxygen is sprayed in premixed combustion pipe 12 andAfter a wind coal dust premix, make primary wind and powder be oxygen enrichment state, then pass through plasma ignition coalPowder. Although this technology can play the effect of oxygen-enriched combustion-supporting, compared with the oxygen amount spraying into, onceWind coal dust amount is larger, after oxygen sprays into, first mixes with a wind, then just can enter coal dust combustionBurn region, after premix, oxygen concentration is seriously diluted, and combustion-supporting effect reduces, the effect of pure oxygen combustion-supportingFruit is had a greatly reduced quality.
As shown in Figure 2, the inventor of this patent is at plasma for patent CN201110442988.3Annular oxygen sleeve 13 of body generator 2 peripheral hardware, sprays into oxygen in plasma-arc region,When igniting, in burner, form local oxygen-rich area, form the oxygen-enriched combusting of coal dust. The disclosure skillThere is following problem in art: plasma region temperature is higher than 4000K, the height of plasma in additionActivity characteristic, can light the coal dust that enters this region easily, adds herein oxygen, can makeBecome coal dust firing too violent, easily cause barrel overtemperature, even burner scaling loss.
Colm volatile matter is low, and flame propagation velocity is slower, and the key of colm igniting is a littleSubsequent combustion after flame range territory catches fire, for the deficiency of conventional plasma and tiny-oil ignition technology andThe defect of existing oxygen-enriched combustion-supporting firing technique, the present invention adopts oxygenating immediately after coal powder ignition, collectionThe mode of middle jet spray oxygen overcomes the above problems.
Summary of the invention
The object of the invention is for the deficiency of current firing technique and propose a kind of pure oxygen combustion-supportingStart-up burner, this burner can significantly strengthen plasma-ignition technique and light colmAbility, and rational in infrastructure, be not prone to slagging scorification burning damage accident.
For achieving the above object, the invention provides a kind of start-up burner of pure oxygen combustion-supporting, bagDraw together burner and incendiary source, the rear end of described burner is connected with fuel gas flow channel, described pointBurning things which may cause a fire disaster front end outside is provided with at least one-level tubular structure, and described tubular structure is arranged at least partlyThe inside of described burner, and in the middle of the spout of described tubular structure and the spout of burnerAt least one place be provided with oxygen directly sprayed to the oxygen spray device to flame combustion region.
Preferably, the one-level tubular structure of described plasma generator front end can be that China is specialPulverized Coal Concentration device in profit CN200910119640.3.
Preferably, the tubular structure of described plasma generator front end can be Chinese patentCentral tube structure in CN032684126 or CN2007201462446.
Preferably, described incendiary source is plasma generator, described plasma generator withDescribed burner is coaxially arranged, and is provided with one-level cylinder outside described plasma generator front end,The front end outside of described one-level cylinder is provided with secondary cylinder, described in described secondary cylinder is arranged at least partlyThe inside of burner, and in spout, the spout of secondary cylinder and the spray of burner of one-level cylinderAt least one place in the middle of mouthful is provided with directly sprays the oxygen spray dress to flame combustion region by oxygenPut.
Preferably, the incendiary source in described start-up burner can be plasma generator, micro-Oil oil gun or other incendiary sources.
Preferably, described oxygen spray device has ring body, and on described ring bodyAt least two oxygen spray pipes that are symmetrical set are installed.
Preferably, in the direction of described oxygen spray device injection of oxygen and described burner onceThe airflow direction of wind is 0~80 °.
Preferably, in the direction of described oxygen spray device injection of oxygen and described burner onceThe airflow direction of wind is 30 °.
Preferably, a wind in the oxygen that described oxygen spray device sprays and described burnerAirflow direction is tangential direction and sprays into.
Preferably, three or four are installed relatively on the ring body of described oxygen spray deviceThe oxygen spray pipe arranging is centrosymmetric in the axle center of burner.
Preferably, the diameter of described one-level cylinder and axial length be less than described secondary cylinder diameter andAxial length.
Preferably, the oxygen spray pipe outside of described oxygen spray device is provided with abrasionproof assembly.
Preferably, described oxygen spray pipe is connected with external oxygen feed system, and is provided with quantity deliveredGovernor motion.
Based on technique scheme, advantage of the present invention is:
The present invention sprays into pure oxygen after coal powder ignition, and overheavy firing, while having solved colm ignitingEnough and the problem of subsequent combustion deficiency of ignition energy; The mode of multiple spot symmetry, concentrated jet addsOxygen, makes oxygen focus utilization, forms the burning situation of pure oxygen, has brought into play to greatest extent oxygenCombustion-supporting characteristic. Burner structure of the present invention is reasonable, for a long time steady operation and not sending outRaw slagging scorification burning damage accident. The present invention is applicable to the igniting pulverized coal burner of all internal combustions, comprises etc.The start-up burners such as gas ions start-up burner and small oil gun, tiny-oil ignition.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the applicationA part, schematic description and description of the present invention is used for explaining the present invention, not structureBecome inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the structural representation of prior art Patent CN201110105569.0;
Fig. 2 is the structural representation of prior art Patent CN201110442988.3;
Fig. 3-1 is the structural representation of first embodiment of the invention;
Fig. 3-2 be in Fig. 3-1 A-A to cutaway view;
The structural representation that Fig. 4-1 is abrasionproof assembly of the present invention;
Fig. 4-2 are the structural representation of oxygen spray device nozzle in an embodiment of the present inventionFigure;
Fig. 5-1 is the structural representation of second embodiment of the invention;
Fig. 5-2 be in Fig. 5-1 B-B to cutaway view;
Fig. 6 is the structural representation of third embodiment of the invention;
Fig. 7-1 is the structural representation of fourth embodiment of the invention;
Fig. 7-2 be in Fig. 7-1 C-C to cutaway view;
Fig. 8 is the structural representation of fifth embodiment of the invention;
Fig. 9 is the structural representation of sixth embodiment of the invention;
Figure 10 is the structural representation of seventh embodiment of the invention;
Figure 11 is the structural representation of eighth embodiment of the invention;
Figure 12-1 is the structural representation of ninth embodiment of the invention;
Figure 12-2 are the structural representation of oxygen spray device nozzle in Figure 12-1;
Figure 13-1 is the structural representation of tenth embodiment of the invention;
Figure 13-2 be in Figure 13-1 D-D to cutaway view;
Figure 14-1 is the structural representation of eleventh embodiment of the invention;
Figure 14-2 be in Figure 14-1 E-E to cutaway view.
Detailed description of the invention
Referring to Fig. 3-1~Figure 14-2, below by accompanying drawing and each embodiment, to the present inventionTechnical scheme be described in further detail.
First referring to Fig. 3-1, the start-up burner of a kind of pure oxygen combustion-supporting provided by the invention comprisesPlasma generator 2(incendiary source of the present invention can be also micro-oil gun or other ignitingSource), burner 1, oxygen conveying pipe (not shown) and oxygen spray device 4, combustionThe rear end of burner 1 is connected with fuel gas flow channel, in the present invention, and described fuel gas circulationRoad is breeze airflow passage, as shown in Figure 1; The front end outside of plasma generator 2 is provided withOne-level cylinder 3, the front end outside of one-level cylinder 3 is provided with secondary cylinder 5, and described secondary cylinder 5 is at least part ofBe arranged on the inside of described burner 1, as shown in Figure 1, certainly, as required, the present inventionTube-in-tube structure more than two-stage can be set, and the quantity n of sleeve can be 1≤n≤6, preferablyGround, coaxially arranges between each sleeve; In other words, in burner 1 of the present invention, be provided with toFew one-level inner sleeve, in the embodiment shown in fig. 1, has two-stage inner sleeve structure, and oneLevel cylinder 3 and secondary cylinder 5.
In the present invention, at the spout of one-level cylinder 3, spout and the burner 1 of secondary cylinder 5Spout in the middle of at least one place be provided with oxygen directly sprayed to the oxygen spray to flame combustion regionInjection device, said structure of the present invention can be directly injected into pure oxygen in flame, each spoutCan be considered as new, a violent incendiary source that burns, utilize fully thus pure oxygenCombustion-supporting ability.
Preferably, oxygen spray device of the present invention has ring body, and in described annularAt least two oxygen spray pipes that are symmetrical set are installed, oxygen spray device of the present invention on bodyRing body in following each embodiment, be presented as oxygen one-level header 7 or oxygen secondaryHeader 8 etc.
Further, the direction of oxygen spray device injection of oxygen of the present invention and described burnerIn the airflow direction of a wind be 0~80 °, in one embodiment of the invention, described oxygenThe direction of gas spraying device (for example one-level oxygen spray device 4 in Fig. 3-1) injection of oxygenBe 30 ° with the airflow direction of a wind in described burner. And in another enforcement of the present inventionIn example, the air-flow side of a wind in the oxygen that described oxygen spray device sprays and described burnerSpray into being tangential direction. In other words, the oxygen spray device injection direction in same cross section is preferredConcentrate on axis a bit, also can be tangential on the imaginary circle concentric with axis.
More preferably, the outlet of oxygen spray device of the present invention inner sleeves at different levels (for example:One-level cylinder 3, secondary cylinder 5 etc.) or burner " spout " add implantation site along on axis directionDefine a length range: taking inner sleeve at the corresponding levels (or burner) exit end face as initial point,Taking breeze airflow direction as positive direction, the exit position of oxygen spray device of the present invention is preferably formerPoint, or in apart from initial point ± 150mm. The position that this structure has ensured every grade of oxygenation allCoal dust in inner sleeve at the corresponding levels has caught fire in the flame region forming; Now, by pure oxygenBe directly injected in flame, each jet can be considered as that one new, violent point burnsBurning things which may cause a fire disaster, thus, can utilize the combustion-supporting ability of pure oxygen cmpletely.
The urceolus of inner sleeve of the present invention and burner 1 is coaxially arranged: one time wind carries coal dustEnter after burner 1, first pass through first-stage firing chamber (one-level cylinder 3), at first-stage firing chamberInteriorly lighted by plasma generator electric arc (micro-oil gun flame or other incendiary sources), afterwardsEnter secondary cylinder 5. Because the sectional area of rear one-level inner sleeve (secondary cylinder 5) is greater than in previous stageSleeve (one-level cylinder 3), like this, the pulverized coal flame of previous stage inner sleeve (one-level cylinder 3) entersWhen rear one-level inner sleeve (secondary cylinder 5), the portion that previous stage inner sleeve (one-level cylinder 3) is outerDivide coal dust also to enter rear one-level inner sleeve (secondary cylinder 5), and lighted by pulverized coal flame. TherebyForm multistep ignition, step by step amplify internal combustion type pulverized coal burner. In every grade of inner sleeve, fireFlame is all to be spread to the periphery by centre, and in conjunction with the promotion of a wind, flame can be envisioned asThe porch of every grade of inner sleeve by center outwards, propagate to spout direction; At this burnerIn design, diameter and the length of every grade of inner sleeve are made respective design according to Coal rank, designAccording to being to ensure that flame can propagate into the spout wall of every grade of inner sleeve, and at inner sleeve goldBelong to the length that in the temperature can bear, (below being generally 800 DEG C) extends every grade of inner sleeve as far as possibleDegree, to ensure abundant burning.
The above-mentioned oxygen spray device of mentioning of the present invention is all arranged in the spray of inner sleeve or burnerMouth is also the burner design theory based on above-mentioned, thereby ensures that oxygen flows out oxygen spray deviceDirectly enter afterwards pulverized coal flame, avoid oxygen to be diluted (becoming oxygen enrichment from pure oxygen) by a wind,Thereby it should be noted that for adopt long or shorter inner sleeve to make in order to evade this patentObtain oxygen spray device position and depart from the application of the nozzle exit area of this patent definition, also should lookFor having invaded the claim of this patent.
Oxygen is arranged in inner sleeve or burner nozzle, can avoid overtemperature, the scaling loss of internal combustion cylinder,The spout of inner sleeves at different levels, except being the position of pulverized coal flame ejection at the corresponding levels, is also next stage sleeveThe position that possible trouble firing coal dust starts to sneak into, is the position that needs overheavy firing, if too early sprayEnter oxygen, the downstream that inner sleeve at the corresponding levels sprays into position at oxygen is very easy to occur because burning tooThe barrel overtemperature, the scaling loss that acutely cause.
The ring body of described oxygen spray device distributes symmetrically around inner sleeve and burner,And at least two oxygen spray pipes that are symmetrical set, these oxygen spray pipes and external oxygen be installedFeed system connects. So the mode that oxygen of the present invention sprays into is that multiple spot symmetry, column are concentratedJet, is easy to by focus utilization oxygen, forms pure oxygen burning environment, avoids oxygen by onceWind dilution; Also make oxygen flow there is stronger penetration power simultaneously, increase oxygen and coal dustTouch opportunity.
When oxygen spray, oxygen is directly sprayed onto fire area by oxygen spray device, with justThe coal dust of fire meets, and promotes burning; Can strengthen to a certain extent the disturbance in burner simultaneously,Be conducive to fully contacting of oxygen and coal dust, further overheavy firing. Preferably, described oxygenJet pipe outside is provided with abrasionproof assembly 6, thus, can alleviate the wearing and tearing of oxygen hose; In addition oxygen,Gas blowout pipe is connected with external oxygen feed system, and is provided with quantity delivered governor motion, can according toThe oxygen amount that needs flexible modulation to spray into of condition of a fire condition.
Describe respectively below in conjunction with each specific embodiment.
Embodiment 1
As shown in Fig. 3-1 and Fig. 3-2 and Fig. 4-1 and Fig. 4-2, one of the present embodimentThe start-up burner of planting pure oxygen combustion-supporting, comprises burner 1, plasma generator 2, one-level cylinder3, secondary cylinder 5, one-level oxygen spray device 4 is installed in abrasionproof assembly 6 (as Fig. 4-1Shown in), 7 is oxygen one-level header. Plasma generator 2 and burner 1 adopt coaxialDirection layout, the diameter of one-level cylinder 3 and axial length are less than the diameter of secondary cylinder 5 and axially longDegree, the length of one-level cylinder 3 and secondary cylinder 5 and diameter meet at spout and form stable flame,And barrel is overtemperature not. At the interior formation first-stage firing chamber of one-level cylinder 3, after coal powder ignition, one3 outlets of level cylinder spray into oxygen, as shown in Fig. 4-2, and one-level oxygen spray device 4 ring bodiesDistribute symmetrically around one-level cylinder 3, as shown in Fig. 3-2, formed by three oxygen spray pipes 71And be connected with one-level oxygen header 7, the oxygen spout of oxygen spray pipe 71 and a general mood stream areThe angle of 30 °. After coal powder ignition, in the interior formation of secondary cylinder 5 secondary combustion chamber, further expandBurning.
The specific works process of this embodiment is as follows: when igniting, and denseer coal dust gas in one-level cylinderStream meets with high-temperature plasma, is ignited by moment, arrives the outlet of one-level cylinder after coal powder ignition,Now spray into pure oxygen, oxygen is concentrated and is sprayed, and forms the strong pure oxygen gas flow of penetration power, and coal dust runs intoAfter pure oxygen, fiercely burning, forms the huge high temp fire core of thermal capacity, and coal around further ignitesPowder, expands burning.
In first-stage firing chamber, first by high-octane plasma, coal dust is lighted, at coal dustInitial stage runs into pure oxygen in the outlet of one-level cylinder after catching fire, and now breeze airflow ignition heat reduces greatly,Burn rate is greatly improved, flame propagation velocity is accelerated, and promotes coke in coal dust simultaneouslyBurning, promotes ignition temperature greatly, produces enough energy follow-up coal dust that ignites, and solvesThe problem of colm when igniting subsequent combustion deficiency, widens the coal accommodation of burner.
Embodiment 2
As shown in Fig. 5-1 and Fig. 5-2, the difference of the present embodiment and embodiment 1 is oxygenInjection apparatus is positioned at the outlet of secondary cylinder 5, and 8 is oxygen secondary header, and 9 is secondary oxygen sprayDevice. The object of this embodiment design is, according to ature of coal situation, is ensureing one-level cylinder and twoUnder the condition of the coal dust energy reliable ignition in level cylinder, spray into oxygen in the outlet of secondary cylinder 5, strongChange burning, continue the follow-up coal dust in ignition burner.
Embodiment 3
As shown in Figure 6, the difference of the present embodiment and above-described embodiment is oxygen spray device positionIn the outlet of burner 1,10 is three grades of oxygen spray devices, after coal powder ignition, goes out at burnerMouth sprays into oxygen, and overheavy firing improves coal dust burn-off rate.
Embodiment 4
As shown in Fig. 7-1 and Fig. 7-2, the difference of the present embodiment and above-described embodiment is oxygenGas spraying device is arranged in the exit of one-level cylinder 3 and secondary cylinder 5, and a point two-stage sprays into oxygenGas, every grade sprays oxygen by three oxygen spray pipes 71 by three spouts, oxygen is concentrated and sprayedTo the interior overheavy firing of burner.
Embodiment 5
As shown in Figure 8, the difference of the present embodiment and above-described embodiment is, three grades of cylinders 11 are set,Oxygen spray Plant arrangement is in the outlet of one-level cylinder 3 and three grades of cylinders 11, and a point two-stage sprays into oxygen,Overheavy firing.
Embodiment 6
As shown in Figure 9, the difference of the present embodiment and above-described embodiment is that oxygen spray device dividesBe not arranged in the outlet of one-level cylinder 3 and burner 1, a point two-stage sprays into oxygen, and every grade by threeSpout composition, concentrates oxygen to be ejected into overheavy firing in burner.
Embodiment 7
As shown in figure 10, the difference of the present embodiment and above-described embodiment is oxygen spray deviceBe arranged in the outlet of secondary cylinder 5 and burner 1, a point two-stage sprays into oxygen, and every grade by threeIndividual spout composition, concentrates oxygen to be ejected into overheavy firing in burner.
Embodiment 8
As shown in figure 11, the difference of the present embodiment and above-described embodiment is oxygen spray deviceBe arranged in the outlet of one-level cylinder 3, secondary cylinder 5 and burner 1, divide three grades and spray into oxygen,Every grade is made up of three spouts, and oxygen is concentrated and is ejected into overheavy firing in burner.
Embodiment 9
As shown in Figure 12-1 and Figure 12-2, the difference of the present embodiment and above-described embodiment isOxygen spout and a general mood stream are the angle of 0 °. Oxygen spray direction and a wind coal dust gasThe direction F of stream is identical, sprays into oxygen, overheavy firing in the outlet of one-level cylinder.
Embodiment 10
As shown in Figure 13-1 and Figure 13-2, the difference of the present embodiment and above-described embodiment is,Oxygen spray device is made up of 4 oxygen spray pipes 71, distributes symmetrically around one-level cylinder, and oxygenInjection is 4 point symmetries, concentrates jet, forms larger pure oxygen space, contributes to light poorColm, widen the coal accommodation of burner.
Embodiment 11
As shown in Figure 14-1 and Figure 14-2, the difference of the present embodiment and above-described embodiment is,Oxygen spout and a general mood stream are tangential direction G and spray into burner in the outlet of one-level cylinder 3,Overheavy firing.
Finally should be noted that: above embodiment is only in order to illustrate technical scheme of the present inventionNon-to its restriction; Although the present invention is had been described in detail with reference to preferred embodiment, underThe those of ordinary skill in field is to be understood that: still can enter the specific embodiment of the present inventionRow is revised or part technical characterictic is equal to replacement; And do not depart from technical solution of the present inventionSpirit, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.

Claims (5)

1. a start-up burner for pure oxygen combustion-supporting, comprises burner (1) and incendiary source, instituteThe rear end of stating burner (1) is connected with fuel gas flow channel, it is characterized in that: described incendiary sourceFor plasma generator (2), described plasma generator (2) is same with described burnerAxle is arranged, and described plasma generator (2) front end outside is provided with one-level cylinder (3), instituteThe front end outside of stating one-level cylinder (3) is provided with secondary cylinder (5), at least portion of described secondary cylinder (5)Point be arranged on the inside of described burner (1), and at spout, the secondary cylinder of one-level cylinder (3)(5) at least one place in the middle of spout is provided with directly sprays the oxygen to flame combustion region by oxygenGas spraying device; The diameter of described one-level cylinder (3) and axial length are less than described secondary cylinder (5)Diameter and axial length; Described oxygen spray device has ring body, and in described annular originallyAt least two oxygen spray pipes that are symmetrical set are installed on body; Described oxygen spray device spraysIn the direction of oxygen and described burner, the airflow direction of a wind is 0~80 °.
2. the start-up burner of pure oxygen combustion-supporting according to claim 1, is characterized in that:The airflow direction of a wind in the direction of described oxygen spray device injection of oxygen and described burnerBe 30 °.
3. the start-up burner of pure oxygen combustion-supporting according to claim 1, is characterized in that:Four oxygen spray pipes are installed on the ring body of described oxygen spray device, and, four oxygenGas blowout pipe circumferentially evenly arranges along ring body.
4. the start-up burner of pure oxygen combustion-supporting according to claim 1, is characterized in that:The oxygen spray pipe outside of described oxygen spray device is provided with abrasionproof assembly (6).
5. the start-up burner of pure oxygen combustion-supporting according to claim 4, is characterized in that:Described oxygen spray pipe is connected with external oxygen feed system, and is provided with quantity delivered governor motion.
CN201310014973.6A 2013-01-15 2013-01-15 A kind of start-up burner of pure oxygen combustion-supporting Active CN103017160B (en)

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CN201310014973.6A CN103017160B (en) 2013-01-15 2013-01-15 A kind of start-up burner of pure oxygen combustion-supporting
PCT/CN2014/070426 WO2014110996A1 (en) 2013-01-15 2014-01-10 Ignition combustor for supporting combustion with pure oxygen

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CN103017160B (en) * 2013-01-15 2016-05-04 烟台龙源电力技术股份有限公司 A kind of start-up burner of pure oxygen combustion-supporting
CN103267280B (en) * 2013-05-30 2017-03-15 重庆富燃科技股份有限公司 The method that pulverized-coal fired boiler nitrogen oxides is reduced using oxygen-enriched micro- oil firing mode
CN105202544A (en) * 2015-10-20 2015-12-30 烟台龙源电力技术股份有限公司 Micro gas combustion gun body, ignition combustor, pulverized-coal combustion system and coal burning boiler
CN110454809A (en) * 2019-07-31 2019-11-15 刘秦勤 A kind of oxygen of lighter combustion-supporting method safely
CN112902183A (en) * 2021-02-07 2021-06-04 哈尔滨工业大学 Device for burning out solid waste by mixing high-concentration oxygen and pulverized coal
CN113464932A (en) * 2021-08-12 2021-10-01 西安热工研究院有限公司 Pulverized coal fired boiler combustion system equipped with hydrogen on-duty flame for stable combustion

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