CN103017160A - Ignition burner with pure oxygen combustion supporting - Google Patents
Ignition burner with pure oxygen combustion supporting Download PDFInfo
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- CN103017160A CN103017160A CN2013100149736A CN201310014973A CN103017160A CN 103017160 A CN103017160 A CN 103017160A CN 2013100149736 A CN2013100149736 A CN 2013100149736A CN 201310014973 A CN201310014973 A CN 201310014973A CN 103017160 A CN103017160 A CN 103017160A
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- burner
- oxygen
- combustion
- ignition
- spray device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING 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
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/007—Supplying oxygen or oxygen-enriched air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2207/00—Ignition devices associated with burner
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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 invention relates to an ignition burner with pure oxygen combustion supporting. The ignition burner comprises a burner and an ignition source. The rear end of the burner is connected with a fuel flow passage. A primary cylinder is disposed on the outer side of the front end of the ignition source. A secondary cylinder is disposed on the outer side of the front end of the primary cylinder. At least part of the secondary cylinder is disposed inside the burner. At least one of a primary cylinder nozzle, a secondary cylinder nozzle, and a burner nozzle is provided with an oxygen jetting device for jetting oxygen directly to a combustion area. Pure oxygen is jetted when coal powder is ignited to intensify combustion, and the problem that ignition energy is sufficient and sequential combustion is insufficient when fault coal is ignited is solved. The burner is reasonable in structure, capable of working stably for a long time without slagging burning loss accidents, suitable for all internal combustion ignition coal powder burners such as a plasma ignition burner, a small oil gun ignition burner and a tiny-oil ignition burner.
Description
Technical field
The present invention relates to a kind of start-up burner equipment, particularly relate to a kind of start-up burner of pure oxygen combustion-supporting.
Background technology
The igniting of traditional large coal powder boiler and steady combustion all adopt burning diesel oil or heavy oil to realize, the startup of station boiler, stop need to consume a large amount of fuel oils with low-load combustion-stabilizing.In recent years, along with increasingly sharpening of petroleum resources anxiety, fuel price rises steadily, and brings heavy financial burden to power plant.Save cost for reducing oil consumption, the part prior art has adopted plasma non-oil ignition technology and tiny-oil ignition technology, and is widely applied at a lot of station boilers.
But in the engineering of reality was used, plasma and tiny-oil ignition technology still came with some shortcomings:
The first, to having relatively high expectations of ature of coal.The ature of coal dependence is larger, at present in the lot of examples of successful Application, mostly is the station boiler take bituminous coal and brown coal as steam coal.And the colm volatile matter content is low, ignition temperature is high, flame propagation velocity is low, needs higher ignition heat when lighting.Existing plasma and tiny-oil ignition Technology Energy are limited, be difficult to colm is lighted, so, when lighting a fire, colm still needs to drop into great amount of fuel oil combustion-supporting, and oil-saving effect is limited by very large.
The second, higher to working condition requirement.During ignition of the boiler, usually need to adopt higher coal powder density, lower wind speed; When operating mode changes, be prone to unstable combustion, even fire-putting-out emergency occurs.
The 3rd, the efficiency of combustion of coal dust is lower.The situation demonstration of actual motion, in the ignition of the boiler process, the phosphorus content of flying dust is high, and a large amount of coal dusts do not have after-flame, bring potential safety hazard to back-end ductwork and equipment, have a strong impact on security and the economy of boiler.According to research, oxygen can reduce the fuel fire temperature, improves the 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 " (CN201110105569.0) and " a kind of plasma oil-free ignition combustor " (CN201110442988.3),
Patent CN201110105569.0 as shown in Figure 1, oxygen spout 16 is located at the upstream of plasma generator 2 along general mood flow path direction, oxygen is sprayed in the premixed combustion pipe 12 and wind coal dust premix after, make primary wind and powder be the oxygen enrichment state, pass through again the plasma ignition coal dust.Although this technology can play the effect of oxygen-enriched combustion-supporting, but compare with the oxygen amount that sprays into, one time wind coal dust amount is larger, after spraying into, at first mixes with a wind oxygen, then just can enter the coal dust firing zone, oxygen concentration is seriously diluted behind the premix, and combustion-supporting effect reduces, and the effect of pure oxygen combustion-supporting is had a greatly reduced quality.
Patent CN201110442988.3 as shown in Figure 2, the inventor of this patent is at the oxygen sleeve 13 of an annular of plasma generator 2 peripheral hardwares, spray into oxygen in the plasma-arc zone, in burner, form local oxygen-rich area during igniting, form the oxygen-enriched combusting of coal dust.There is following problem in the disclosure technology: plasma zone temperature is higher than 4000K, and the high activity characteristic of plasma can be lighted easily and be entered this regional coal dust in addition, add herein oxygen, can cause coal dust firing too violent, easily cause the barrel overtemperature, even the burner scaling loss.
The colm volatile matter is low, flame propagation velocity is slower, the key of colm igniting is the subsequent combustion after ignition zone catches fire, for the deficiency of conventional plasma and tiny-oil ignition technology and the defective of existing oxygen-enriched combustion-supporting firing technique, the present invention adopts immediately oxygenating behind the coal powder ignition, concentrates the mode of jet spray oxygen to overcome the above problems.
Summary of the invention
The objective of the invention is for the deficiency of present firing technique and propose a kind of start-up burner of pure oxygen combustion-supporting, this burner can significantly strengthen the ability that plasma-ignition technique is lighted colm, and rational in infrastructure, is not prone to the slagging scorification burning damage accident.
For achieving the above object, the invention provides a kind of start-up burner of pure oxygen combustion-supporting, comprise burner and incendiary source, the rear end of described burner links to each other with fuel gas flow channel, the described incendiary source front end outside is provided with at least one-level tubular structure, the at least part of inside that is arranged on described burner of described tubular structure, and at least one place in the middle of the spout of the spout of described tubular structure and burner is provided with oxygen is directly sprayed oxygen spray device to the flame combustion zone.
Preferably, the one-level tubular structure of described plasma generator front end can be the Pulverized Coal Concentration device among the Chinese patent CN200910119640.3.
Preferably, the tubular structure of described plasma generator front end can be the central tube structure among Chinese patent CN032684126 or the CN2007201462446.
Preferably, described incendiary source is plasma generator, described plasma generator and described burner coaxial arrangement, and the described plasma generator front end outside is provided with the one-level cylinder, the front end outside of described one-level cylinder is provided with the secondary cylinder, the at least part of inside that is arranged on described burner of described secondary cylinder, and at least one place in the middle of the spout of the spout of the spout of one-level cylinder, secondary cylinder and burner is provided with oxygen is directly sprayed oxygen spray device to the flame combustion zone.
Preferably, the incendiary source in the described start-up burner can be plasma generator, little oil gun or other incendiary sources.
Preferably, described oxygen spray device has ring body, and is equipped with at least two at described ring body and is symmetrically arranged oxygen spray pipe.
Preferably, the airflow direction of a wind is 0～80 ° in the direction of described oxygen spray device injection of oxygen and the described burner.
Preferably, the airflow direction of a wind is 30 ° in the direction of described oxygen spray device injection of oxygen and the described burner.
Preferably, the airflow direction of a wind is tangential direction and sprays in the oxygen that sprays of described oxygen spray device and the described burner.
Preferably, three or four oxygen spray pipes that the axle center with respect to burner is centrosymmetric and arranges are installed on the ring body of described oxygen spray device.
Preferably, the diameter of described one-level cylinder and axial length are less than diameter and the axial length of described secondary cylinder.
Preferably, the oxygen spray pipe outside of described oxygen spray device is provided with the abrasionproof assembly.
Preferably, described oxygen spray pipe is connected with the external oxygen feed system, and is provided with the quantity delivered governor motion.
Based on technique scheme, advantage of the present invention is:
The present invention sprays into pure oxygen behind coal powder ignition, overheavy firing has solved the enough and problem of subsequent combustion deficiency of colm when igniting ignition energy; The mode oxygenation of symmetrical, the concentrated jet of multiple spot makes the oxygen focus utilization, forms the burning situation of pure oxygen, has brought into play to greatest extent the combustion-supporting characteristic of oxygen.Burner structure of the present invention is reasonable, for a long time steady operation and the slagging scorification burning damage accident does not occur.The present invention 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 of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction 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 among Fig. 3-1 A-A to cutaway view;
Fig. 4-1 is the structural representation of abrasionproof assembly of the present invention;
Fig. 4-2 is the structural representation of oxygen spray device nozzle in an embodiment of the present invention;
Fig. 5-1 is the structural representation of second embodiment of the invention;
Fig. 5-2 be among 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 among 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 is the structural representation of oxygen spray device nozzle among Figure 12-1;
Figure 13-1 is the structural representation of tenth embodiment of the invention;
Figure 13-2 be among 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 among Figure 14-1 E-E to cutaway view.
The specific embodiment
Referring to Fig. 3-1～Figure 14-2, below by accompanying drawing and each embodiment, technical scheme of the present invention is described in further detail.
At first referring to Fig. 3-1, the start-up burner of a kind of pure oxygen combustion-supporting provided by the invention comprises that plasma generator 2(incendiary source of the present invention also can be little oil gun or other incendiary sources), burner 1, oxygen conveying pipe (not shown) and oxygen spray device 4, the rear end of burner 1 links to each other with fuel gas flow channel, in the present invention, described fuel gas flow channel is the breeze airflow passage, as shown in Figure 1; The front end outside of plasma generator 2 is provided with one-level cylinder 3, the front end outside of one-level cylinder 3 is provided with secondary cylinder 5, described secondary cylinder 5 at least part of inside that are arranged on described burner 1, as shown in Figure 1, certainly, as required, the present invention can arrange the tube-in-tube structure more than two-stage, the quantity n of sleeve can be 1≤n≤6, preferably, and coaxial setting between each sleeve; In other words, be provided with at least one-level inner sleeve in the burner 1 of the present invention, in the embodiment shown in fig. 1, have two-stage inner sleeve structure, i.e. one-level cylinder 3 and secondary cylinder 5.
Among the present invention, at least one place in the middle of the spout of the spout of the spout of one-level cylinder 3, secondary cylinder 5 and burner 1 is provided with directly sprays oxygen spray device to the flame combustion zone with oxygen, said structure of the present invention can be directly injected into pure oxygen in the flame, each spout can be considered as an incendiary source new, that burning is violent, has utilized fully thus the combustion-supporting ability of pure oxygen.
Preferably, oxygen spray device of the present invention has ring body, and be equipped with at least two at described ring body and be symmetrically arranged oxygen spray pipe, the ring body of oxygen spray device of the present invention is presented as oxygen one-level header 7 or oxygen secondary header 8 etc. in following each embodiment.
Further, the airflow direction of a wind is 0～80 ° in the direction of oxygen spray device injection of oxygen of the present invention and the described burner, in one embodiment of the invention, the airflow direction of a wind is 30 ° in the direction of described oxygen spray device (for example one-level oxygen spray device 4 among Fig. 3-1) injection of oxygen and the described burner.And in another embodiment of the present invention, the airflow direction of a wind is tangential direction and sprays in the oxygen that described oxygen spray device sprays and the described burner.In other words, the oxygen spray device injection direction in same cross section preferably concentrates 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 at inner sleeves at different levels (for example: one-level cylinder 3, secondary cylinder 5 etc.) or burner " spout " add the implantation site along having defined a length range on the axis direction: namely take inner sleeve at the corresponding levels (or burner) exit end face as initial point, take the breeze airflow direction as positive direction, the exit position of oxygen spray device of the present invention is preferably at initial point, or in distance initial point ± 150mm.This structure has guaranteed that the position of every grade of oxygenation all is in coal dust in the inner sleeve at the corresponding levels and has caught fire in the flame region that forms; At this moment, pure oxygen is directly injected in the flame, each jet can be considered as an incendiary source new, that burning is violent, thus, can utilize cmpletely the combustion-supporting ability of pure oxygen.
The urceolus coaxial arrangement of inner sleeve of the present invention and burner 1: after a wind carries coal dust and enters burner 1, at first pass through first-stage firing chamber (one-level cylinder 3), in first-stage firing chamber, lighted by plasma generator electric arc (little oil gun flame or other incendiary sources), enter afterwards secondary cylinder 5.Because the sectional area of rear one-level inner sleeve (secondary cylinder 5) is greater than previous stage inner sleeve (one-level cylinder 3), like this, when the pulverized coal flame of previous stage inner sleeve (one-level cylinder 3) enters rear one-level inner sleeve (secondary cylinder 5), the outer part coal dust of previous stage inner sleeve (one-level cylinder 3) also enters rear one-level inner sleeve (secondary cylinder 5), and is lighted by pulverized coal flame.Thereby the internal combustion type pulverized coal burner that form multistep ignition, amplifies step by step.In every grade of inner sleeve, flame all is to be spread to the periphery by the centre, and in conjunction with the promotion of a wind, flame can be envisioned as in the porch of every grade of inner sleeve by the center outwards, propagate to the spout direction; In this Burner design, diameter and the length of every grade of inner sleeve are made respective design according to Coal rank, the foundation of design is to guarantee that flame can propagate into the spout wall of every grade of inner sleeve, and in the temperature that the inner sleeve metal can bear, (be generally below 800 ℃) length that as far as possible prolongs every grade of inner sleeve, to guarantee abundant burning.
The spout that the above-mentioned oxygen spray device of mentioning of the present invention all is arranged in inner sleeve or burner also is based on above-mentioned burner design theory, thereby guarantee directly to enter pulverized coal flame after oxygen flows out the oxygen spray device, avoid oxygen to be diluted (becoming oxygen enrichment by pure oxygen) by a wind, thereby need to prove for adopt long in order to evade this patent or shorter inner sleeve so that the application of the nozzle exit area of this patent definition is departed from oxygen spray device position, also should be considered as 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 is except being the position of pulverized coal flame ejection at the corresponding levels, it also is the position that next stage sleeve possible trouble firing coal dust begins to sneak into, it is the position that needs overheavy firing, if the too early oxygen that sprays into, inner sleeve at the corresponding levels are very easy to occur the barrel overtemperature, the scaling loss that too acutely cause because of burning in the downstream that oxygen sprays into the position.
The ring body of described oxygen spray device distributes symmetrically around inner sleeve and burner, and is equipped with at least two and is symmetrically arranged oxygen spray pipe, and these oxygen spray pipes are connected with the external oxygen feed system.So the mode that oxygen of the present invention sprays into is that multiple spot is symmetrical, column is concentrated jet, and oxygen is easy to by focus utilization, forms the pure oxygen burning environment, avoids oxygen to be diluted by a wind; Also so that oxygen flow has stronger penetration power, increase the touch opportunity of oxygen and coal dust simultaneously.
During oxygen spray, the oxygen spray device directly is sprayed onto the fire area with oxygen, meets with the coal dust that has just caught fire, and promotes burning; Can strengthen to a certain extent simultaneously the disturbance in the burner, be conducive to fully contacting of oxygen and coal dust, further overheavy firing.Preferably, described oxygen spray pipe outside is provided with abrasionproof assembly 6, thus, can alleviate the wearing and tearing of oxygen hose; In addition, oxygen spray pipe is connected with the external oxygen feed system, and is provided with the quantity delivered governor motion, the oxygen amount that can spray into according to the needs flexible modulation of case of fire.
Describe respectively below in conjunction with each specific embodiment.
Shown in Fig. 3-1 and Fig. 3-2 and Fig. 4-1 and Fig. 4-2, the start-up burner of a kind of pure oxygen combustion-supporting of the present embodiment, comprise burner 1, plasma generator 2, one-level cylinder 3, secondary cylinder 5, one-level oxygen spray device 4 is installed in the abrasionproof assembly 6 (shown in Fig. 4-1), and 7 is oxygen one-level header.Plasma generator 2 and burner 1 adopt coaxial direction to arrange, the diameter of one-level cylinder 3 and axial length are less than diameter and the axial length of secondary cylinder 5, the length of one-level cylinder 3 and secondary cylinder 5 and diameter satisfy at spout and form stable flame, and barrel overtemperature not.At one-level cylinder 3 interior formation first-stage firing chambers, behind the coal powder ignition, spray into oxygen in 3 outlets of one-level cylinder, shown in Fig. 4-2, one-level oxygen spray device 4 ring bodies distribute symmetrically around one-level cylinder 3, shown in Fig. 3-2, form and be connected with one-level oxygen header 7 by three oxygen spray pipes 71, the oxygen spout of oxygen spray pipe 71 and a general mood stream are 30 ° angle.In the interior formation of secondary cylinder 5 secondary combustion chamber, further enlarge burning behind the coal powder ignition.
The specific works process of this embodiment is as follows: during igniting, breeze airflow and high-temperature plasma denseer in the one-level cylinder meet, ignited by moment, arrive the outlet of one-level cylinder behind the coal powder ignition, spray into pure oxygen this moment, oxygen is concentrated and is sprayed, form the strong pure oxygen gas flow of penetration power, coal dust fiercely burns after running into pure oxygen, forms the huge high temp fire nuclear of thermal capacity, coal dust around further igniting enlarges burning.
In first-stage firing chamber, at first by high-octane plasma coal dust is lighted, after catching fire at the coal dust initial stage, run into pure oxygen in the outlet of one-level cylinder, this moment, the breeze airflow ignition heat reduced greatly, burn rate is greatly improved, and flame propagation velocity is accelerated, and promotes simultaneously the burning of coke in the coal dust, ignition temperature is promoted greatly, produce enough energy follow-up coal dust that ignites, the problem of subsequent combustion deficiency when solving the colm igniting is widened the coal accommodation of burner.
Shown in Fig. 5-1 and Fig. 5-2, the difference of the present embodiment and embodiment 1 is that the oxygen spray device is positioned at the outlet of secondary cylinder 5, and 8 is oxygen secondary header, and 9 is secondary oxygen spray device.The purpose of this embodiment design is, according to the ature of coal situation, the coal dust in guaranteeing one-level cylinder and secondary cylinder can the condition of reliable ignition under, spray into oxygen in the outlet of secondary cylinder 5, overheavy firing continues the interior follow-up coal dust of ignition burner.
As shown in Figure 6, the difference of the present embodiment and above-described embodiment is that the oxygen spray device is positioned at the outlet of burner 1, and 10 is three grades of oxygen spray devices, sprays into oxygen at burner outlet behind the coal powder ignition, and overheavy firing improves the coal dust burn-off rate.
Shown in Fig. 7-1 and Fig. 7-2, the difference of the present embodiment and above-described embodiment is that the oxygen spray device is arranged in the exit of one-level cylinder 3 and secondary cylinder 5, minute two-stage sprays into oxygen, every grade is passed through three oxygen spray pipes 71 by three spouts ejection oxygen, oxygen is concentrated be ejected into overheavy firing in the burner.
As shown in Figure 8, the difference of the present embodiment and above-described embodiment is, three grades of cylinders 11 are set, and the oxygen spray Plant arrangement is in the outlet of one-level cylinder 3 and three grades of cylinders 11, and a minute two-stage sprays into oxygen, overheavy firing.
As shown in Figure 9, the difference of the present embodiment and above-described embodiment is that the oxygen spray device is arranged in the outlet of one-level cylinder 3 and burner 1, and a minute two-stage sprays into oxygen, and every grade is comprised of three spouts, oxygen is concentrated be ejected into overheavy firing in the burner.
As shown in figure 10, the difference of the present embodiment and above-described embodiment is that the oxygen spray device is arranged in the outlet of secondary cylinder 5 and burner 1, and a minute two-stage sprays into oxygen, and every grade is comprised of three spouts, oxygen is concentrated be ejected into overheavy firing in the burner.
As shown in figure 11, the difference of the present embodiment and above-described embodiment is that the oxygen spray device is arranged in the outlet of one-level cylinder 3, secondary cylinder 5 and burner 1, minutes three grades spray into oxygen, and every grade is comprised of three spouts, oxygen is concentrated be ejected into overheavy firing in the burner.
Shown in Figure 12-1 and Figure 12-2, the difference of the present embodiment and above-described embodiment is that oxygen spout and a general mood stream are 0 ° angle.The oxygen spray direction is identical with the direction F of a wind breeze airflow, sprays into oxygen, overheavy firing in the outlet of one-level cylinder.
Shown in Figure 13-1 and Figure 13-2, the difference of the present embodiment and above-described embodiment is, the oxygen spray device is comprised of 4 oxygen spray pipes 71, distribute symmetrically around the one-level cylinder, oxygen spray is 4 point symmetries, concentrates jet, forms larger pure oxygen space, help to light relatively poor colm, widen the coal accommodation of burner.
Embodiment 11
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.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (10)
1. the start-up burner of a pure oxygen combustion-supporting, comprise burner (1) and incendiary source, the rear end of described burner (1) links to each other with fuel gas flow channel, it is characterized in that: the described incendiary source front end outside is provided with at least one-level tubular structure, the at least part of inside that is arranged on described burner (1) of described tubular structure, and at least one place in the middle of the spout of the spout of described tubular structure and burner (1) is provided with oxygen is directly sprayed oxygen spray device to the flame combustion zone.
2. the start-up burner of pure oxygen combustion-supporting according to claim 1, it is characterized in that: described incendiary source is plasma generator (2), described plasma generator (2) and described burner coaxial arrangement, and described plasma generator (2) the front end outside is provided with one-level cylinder (3), the front end outside of described one-level cylinder (3) is provided with secondary cylinder (5), the at least part of inside that is arranged on described burner (1) of described secondary cylinder (5), and at the spout of one-level cylinder (3), the spout of secondary cylinder (5), and at least one place in the middle of the spout of burner (1) is provided with the direct oxygen spray device that sprays to the flame combustion zone of oxygen.
3. the start-up burner of pure oxygen combustion-supporting according to claim 2, it is characterized in that: described oxygen spray device has ring body, and is equipped with at least two at described ring body and is symmetrically arranged oxygen spray pipe.
4. the start-up burner of pure oxygen combustion-supporting according to claim 3, it is characterized in that: the airflow direction of a wind is 0～80 ° in the direction of described oxygen spray device injection of oxygen and the described burner.
5. the start-up burner of pure oxygen combustion-supporting according to claim 4, it is characterized in that: the airflow direction of a wind is 30 ° in the direction of described oxygen spray device injection of oxygen and the described burner.
6. the start-up burner of pure oxygen combustion-supporting according to claim 3 is characterized in that: the airflow direction of a wind is tangential direction and sprays in the oxygen that described oxygen spray device sprays and the described burner.
7. the start-up burner of pure oxygen combustion-supporting according to claim 3 is characterized in that: three or four oxygen spray pipes that the axle center with respect to burner is centrosymmetric and arranges are installed on the ring body of described oxygen spray device.
8. the start-up burner of pure oxygen combustion-supporting according to claim 2, it is characterized in that: the diameter of described one-level cylinder (3) and axial length are less than diameter and the axial length of described secondary cylinder (5).
9. the start-up burner of pure oxygen combustion-supporting according to claim 3, it is characterized in that: the oxygen spray pipe outside of described oxygen spray device is provided with abrasionproof assembly (6).
10. the start-up burner of pure oxygen combustion-supporting according to claim 9, it is characterized in that: described oxygen spray pipe is connected with the external oxygen feed system, and is provided with the quantity delivered governor motion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014973.6A CN103017160B (en) | 2013-01-15 | 2013-01-15 | A kind of start-up burner of pure oxygen combustion-supporting |
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| CN103017160A true CN103017160A (en) | 2013-04-03 |
| CN103017160B CN103017160B (en) | 2016-05-04 |
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| CN103267280A (en) * | 2013-05-30 | 2013-08-28 | 向卫 | Method for reducing pulverized coal boiler oxynitride by utilizing oxygen-enriched micro-oil combustion manner |
| WO2014110996A1 (en) * | 2013-01-15 | 2014-07-24 | 烟台龙源电力技术股份有限公司 | Ignition combustor for supporting combustion with pure oxygen |
| 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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| WO2014110996A1 (en) * | 2013-01-15 | 2014-07-24 | 烟台龙源电力技术股份有限公司 | Ignition combustor for supporting combustion with pure oxygen |
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| 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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| Publication number | Publication date |
|---|---|
| WO2014110996A1 (en) | 2014-07-24 |
| CN103017160B (en) | 2016-05-04 |
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