CN101598333B - Low-nitrogen oxide discharging coal powder tangential combustion device - Google Patents
Low-nitrogen oxide discharging coal powder tangential combustion device Download PDFInfo
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- CN101598333B CN101598333B CN200910054141A CN200910054141A CN101598333B CN 101598333 B CN101598333 B CN 101598333B CN 200910054141 A CN200910054141 A CN 200910054141A CN 200910054141 A CN200910054141 A CN 200910054141A CN 101598333 B CN101598333 B CN 101598333B
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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
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
- F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
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Abstract
The invention provides a low-nitrogen oxide discharging coal powder tangential combustion device, comprising a hearth; wherein the four corners of a main combustion area of the hearth are provided with primary air spray nozzles and secondary air spray nozzles which are arranged at intervals, and the axis of the primary air spray nozzles or the secondary air spray nozzles positioned on the same horizontal plane is tangential to a supposed tangential circle taking the center of the hearth as a circle center. The low-nitrogen oxide discharging coal powder tangential combustion device is characterized in that the four walls of the hearth above the primary air spray nozzles and the secondary air spray nozzles are provided with at least one burning-out air spray nozzle group; each burning-out air spray nozzle group comprises four burning-out air spray nozzles, one burning-out air spray nozzle is respectively arranged on one wall of the hearth, and the four burning-out air spray nozzles are positioned on the same horizontal plane; and the axis of the burning-out air spray nozzles in the same group are tangential to one supposed tangential circle taking the center of the hearth as a circle center. The invention can realize the low discharging of NOx, solves the problems of high content of fly ash combustible substances caused by a whole air classification technique in a furnace, high fume speed at a hearth outlet, large temperature deviation of the hearth outlet and the like, and increases the running regulation performance aiming at different coal species and load changes simultaneously.
Description
Technical field
The present invention relates to a kind of low-nitrogen oxide discharging coal powder tangential combustion device, belong to the burner technical field.
Background technology
(NOx comprises NO, NO to nitrogen oxide
2, N
2O) be one type of gas that can cause the atmospheric environment severe contamination, be considered to one of main source of atmosphere pollution.In all discharged nitrous oxides occupy very big ratio at the nitrogen oxide that world wide discharges because of combustion of fossil fuels every year.The environmental regulation of increasingly stringent requires the advanced combustion technology of research and development, to reduce the discharging of pollutants such as NOx.At present the maximum characteristics of the Energy Mix of China are to be main with coal, account for more than 70%, and this will produce a large amount of oxides of nitrogen gas, and therefore such energy resource structure all can have a negative impact to economical and efficient growth and ecological environment.The technical measures of the conventional coal-fired power station boiler NOx of present existing control discharging can be divided into two types of low NOx combusting technology and flue gases purifications.Flue gases purification is through removing the final discharge capacity that NOx in the flue gas reduces NOx.The external NOx of thermal power plant reduces discharging and mainly realizes through advanced person's operation mode, low NOx combusting technology and tail flue gas denitration technology.The tail flue gas denitration technology is more thorough, but its investment is expensive with operation and maintenance cost.Advanced low NOx combusting technology can reduce concentration of emission to 450～650mg/Nm
3Below, and, also can reduce the operating cost of afterbody denitrification apparatus along with the minimizing of NOx growing amount in the stove.One of core of low NOx combusting technology is a grading combustion technology, comprises two kinds of air classification and fuel stagings, and the fuel staging technology is called fuel again and fires (reductive NO) technology again.The main flow low NOx combusting technology that pulverized-coal fired boiler adopts the most both at home and abroad, technology is the most ripe is the air classification technology, and it is generally adopted at the station boiler of China.
Literature search through to prior art is found; " PRESENT STATUS OF LOW-NO _ x COMBUSTION TECHNOLOGY " (Bi Yusen; Thermal power generation, 2000 02 phases) introduced quadrangle tangential circle burner hearth integrated air classification DC burner, coaxial combustion system (CFS I, CFS II) and both combining forms-low coaxial combustion system of NOx of ABB-CE company exploitation in detail.The classification of burner hearth integrated air is the required air capacity of burning to be divided into two-stage send into, and the air that provides for burner in the first-stage burning district accounts for 60% to 90% of coal dust completing combustion requirement, fuel burning under the rich fuel condition of anoxic earlier.In the secondary firing district, the remainder of the air of burning usefulness with auxiliary air (after-flame wind) input, is become the oxygen-enriched combusting district.Is oxygen concentration in the centre of I and II combustion zone near zero the reducing zone with reducing atmosphere, the NOx effect that this regional reducing medium has generated for reduction clearly.The integrated air classification technique can make the NOx growing amount reduce by 30%～50% in the stove, and the degree of air classification is big more, and promptly the shared share of after-flame wind is big more, and the degree that NOx reduces discharging is big more.
The ratio of after-flame wind is still very big to the influence of efficiency of combustion, and usually after-flame wind ratio is high more, and efficiency of combustion is low more, and the influence that puts into operation to the furnace outlet gas temperature deviation of after-flame wind also is very big, and design how to optimize after-flame wind is a problem demanding prompt solution.
Summary of the invention
The objective of the invention is to optimize the design of after-flame wind, a kind of coal powder tangential combustion device that has the low-nitrogen oxide discharging amount, hangs down flying dust phosphorus content and low furnace outlet gas temperature deviation is provided.
In order to achieve the above object; Technical scheme of the present invention provides a kind of low-nitrogen oxide discharging coal powder tangential combustion device; Comprise burner hearth; Four jiaos in the primary zone of burner hearth is provided with the wind nozzle and the overfire air jet of alternate setting, and it is the circle in the center of circle that the axis that is positioned at wind nozzle or overfire air jet on the same horizontal plane is cut in the burner hearth center, it is characterized in that: on the four sides wall of burner hearth above wind nozzle and the overfire air jet, be provided with at least one after-flame wind nozzle sets; Each after-flame wind nozzle sets comprises four after-flame wind nozzles, on every face wall of burner hearth, arranges one, and is positioned at same horizontal plane; It is an imaginary circle in the center of circle that the axis of four after-flame wind nozzles on the same group is cut in the burner hearth center.
Further, on the four sides wall of burner hearth above wind nozzle and the overfire air jet, be provided with an after-flame wind nozzle sets, after-flame wind arrangement of nozzles is on the center line of every face wall.
On the four sides wall of burner hearth above wind nozzle and the overfire air jet, be provided with two after-flame wind nozzle sets, the after-flame wind arrangement of nozzles in every group is on the center line of every face wall.
On the four sides wall of burner hearth above wind nozzle and the overfire air jet, be provided with an after-flame wind nozzle sets; After-flame wind arrangement of nozzles is on the vertical curve that departs from every face wall center line, and it is the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width that the axis of after-flame wind nozzle is cut in the burner hearth center.
On the four sides wall of burner hearth above wind nozzle and the overfire air jet, be provided with two after-flame wind nozzle sets; One of them after-flame wind nozzle sets is arranged on the center line of every face wall, and another after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, to be cut in the burner hearth center be the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width to the axis of after-flame wind nozzle wherein.
On the side wall of burner hearth above wind nozzle and the overfire air jet, be provided with two after-flame wind nozzle sets, each after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, to be cut in the burner hearth center be the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width to the axis of after-flame wind nozzle wherein.
On the four sides wall of burner hearth above wind nozzle and the overfire air jet, be provided with three after-flame wind nozzle sets; Wherein two after-flame wind nozzle sets are arranged on the center line of every face wall, and another after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, to be cut in the burner hearth center be the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width to the axis of after-flame wind nozzle wherein.
The center of the distance h at the center of the after-flame wind nozzle on the every face wall of burner hearth and the center of a wind nozzle of the row of going up most and a wind nozzle of the row of going up most is 0.1～0.5: 1 to the ratio of the distance H of shielding the end.
The ratio that the air quality that said after-flame wind nozzle (6) passes through accounts for the total air quality of boiler combustion is 10%-30%.
The present invention arranges the after-flame wind that separates in a distance above the main burner that quadrangle tangential circle is arranged, after-flame wind nozzle is not on arranging four jiaos, but is arranged on the four sides wall of burner hearth.Compared with prior art, the present invention can strengthen after-flame wind and mix with the turbulent flow of high-temperature flue gas in control NOx discharging, strengthens the after-flame of coke and the after-flame of CO.Through the traditional method of indicating the pronunciation of a Chinese character of after-flame wind, can regulate the swirl strength of burning fireball, help controlling the velocity of flue gas and the temperature deviation of furnace outlet.
The present invention can control NOx effect 250～650mg/m by the integrated air classification technique in using bituminous coal and meager coal stove at present
3On (during flue gas oxygen concentration 6%) basis, realize the NOx low emission, the NOx growing amount is reduced about 10% again.Problems such as it is high to solve the fly ash combustible material that the integrated air classification technique brings in the stove, and the velocity of flue gas of furnace outlet and temperature deviation are big have increased the operation adjusting function to different coals and load variations simultaneously.
Description of drawings
Fig. 1 is a kind of low-nitrogen oxide discharging coal powder tangential combustion device sketch map;
Fig. 2 is an A-A sectional view among Fig. 1;
Fig. 3 is a B-B sectional view among Fig. 1;
Fig. 4 is another kind of low-nitrogen oxide discharging coal powder tangential combustion device sketch map;
Fig. 5 is an A-A sectional view among Fig. 4;
Fig. 6 is a B-B sectional view among Fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Embodiment 1
As shown in Figure 1, be a kind of low-nitrogen oxide discharging coal powder tangential combustion device sketch map, be adapted to thermal power plant's quadrangle tangential circle coal-burning boiler, along the furnace height direction, be divided into primary zone 1, reducing zone 2 and burning-out zone 3 according to coal dust firing regional characteristics burner hearth.In the primary zone by wind nozzle 4 of multilayer, the overfire air jet 5 alternate main burner groups of forming; Be arranged on four jiaos in the burner hearth; Nozzle arrangements is identical, as shown in Figure 3 with common corner tangential firing system with arrangement form, is B-B sectional view among Fig. 1; It is an imaginary circle in the center of circle that the axis of wind nozzle 4/ overfire air jet 5 is cut in the burner hearth center, and actual flow will form swirling eddy in stove.
The ratio that the air quality that said after-flame wind nozzle 6 passes through accounts for the total air quality of boiler combustion is 20%; As shown in Figure 2; Be a kind of low-nitrogen oxide discharging coal powder tangential combustion device sectional view, said device comprises two after-flame wind nozzle sets, and every face wall is arranged 2 after-flame wind nozzles 6; Be arranged on the center line of every face wall, it is that the diameter in the center of circle is an imaginary circle of zero that its axis is cut in the burner hearth center.Forming NOx reducing zone 2 like this in the furnace height scope between main burner and after-flame wind nozzle 6, is burning-out zone 3 above after-flame wind.
The centre distance of the after-flame wind nozzle sets that the wall formula is arranged is the distance h=8100mm of a wind nozzle center of the row of going up most, with wind nozzle center of the row of going up most to the ratio of the distance H=18000mm at the screen end: h/H=0.45.
The after-flame wind nozzle that the wall formula is arranged has the function of manual adjustments horizontal direction pivot angle, according to the number of degrees of operating condition adjusting horizontal direction pivot angle, controls the velocity of flue gas and the temperature deviation of unburned carbon in flue dust and furnace outlet during the burning adjustment.
Embodiment 2
As shown in Figure 4, be another kind of low-nitrogen oxide discharging coal powder tangential combustion device sketch map, be adapted to thermal power plant's quadrangle tangential circle coal-burning boiler, along the furnace height direction, be divided into primary zone 1, reducing zone 2 and burning-out zone 3 according to coal dust firing regional characteristics burner hearth.1 by wind nozzle 4 of multilayer, the overfire air jet 5 alternate main burner groups of forming in the primary zone; Be arranged on four jiaos in the burner hearth; Nozzle arrangements is identical, as shown in Figure 6 with common corner tangential firing system with arrangement form, is B-B sectional view among Fig. 4; It is the circle in the center of circle that the axis of wind nozzle 4/ overfire air jet 5 is cut in the burner hearth center, and actual flow will form swirling eddy in stove.
The ratio that the air quality that said after-flame wind nozzle 6 passes through accounts for the total air quality of boiler combustion is 20%; As shown in Figure 5; Be A-A sectional view among Fig. 1, described device comprises three after-flame wind nozzle sets, and every face wall is arranged 3 after-flame wind nozzles 6; On the central vertical straight line that wherein 2 are arranged in every face wall, it is that the diameter in the center of circle is an imaginary circle of zero that its axis is cut in the burner hearth center.Other 1 arrangement of nozzles is on the vertical curve of the center line that departs from every face wall; The axis of the corresponding nozzle on its axis and other 3 face walls is inscribed within the imaginary circle that a diameter d is 5000mm at stove; The direction of rotation of circle is opposite with the direction of rotation of burning fireball; Also racemization be can play so when operation, regulate the air quantity size of this nozzle, the velocity of flue gas of control furnace outlet and the effect of temperature deviation further played.Forming NOx reducing zone 2 like this in the furnace height scope between main burner and after-flame wind nozzle, is burning-out zone 3 above after-flame wind.
The centre distance of the after-flame wind nozzle sets that the wall formula is arranged is the distance h=8100mm of a wind nozzle center of the row of going up most, with wind nozzle center of the row of going up most to the ratio of the distance H=18000mm at the screen end: h/H=0.45.
The after-flame wind nozzle that the wall formula is arranged has the function of manual adjustments horizontal direction pivot angle, according to the number of degrees of operating condition adjusting horizontal direction pivot angle, controls the velocity of flue gas and the temperature deviation of unburned carbon in flue dust and furnace outlet during the burning adjustment.
Embodiment 3
With embodiment 2, difference is, above wind nozzle 4 and overfire air jet 5, is provided with an after-flame wind nozzle sets on the four sides wall of burner hearth, and after-flame wind nozzle 6 is arranged on the center line of every face wall.The center of the distance h=1800mm at the center of the after-flame wind nozzle 6 on the every face wall of burner hearth and the center of a wind nozzle 4 of the row of going up most and a wind nozzle 4 of the row of going up most is 0.1: 1 to the ratio of the distance H=18000mm that shields the end 7.The ratio that the air quality that said after-flame wind nozzle 6 passes through accounts for the total air quality of boiler combustion is 10%.
With embodiment 2; Difference is; Above wind nozzle 4 and overfire air jet 5, be provided with an after-flame wind nozzle sets on the four sides wall of burner hearth; After-flame wind nozzle 6 is arranged on the vertical curve that departs from every face wall center line, and it is the imaginary circle that the diameter d in the center of circle equals 2/3 furnace width that the axis of after-flame wind nozzle 6 is cut in the burner hearth center.The center of the distance h=9000mm at the center of the after-flame wind nozzle 6 on the every face wall of burner hearth and the center of a wind nozzle 4 of the row of going up most and a wind nozzle 4 of the row of going up most is 0.5: 1 to the ratio of the distance H=18000mm that shields the end 7.The ratio that the air quality that said after-flame wind nozzle 6 passes through accounts for the total air quality of boiler combustion is 30%.
With embodiment 2; Difference is; Above wind nozzle 4 and overfire air jet 5, be provided with two after-flame wind nozzle sets on the four sides wall of burner hearth; One of them after-flame wind nozzle sets is arranged on the center line of every face wall, and another after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, to be cut in the burner hearth center be the imaginary circle that the diameter d in the center of circle equals 2/3 furnace width to the axis of after-flame wind nozzle 6 wherein.The center of the distance h=9000mm at the center of the after-flame wind nozzle 6 on the every face wall of burner hearth and the center of a wind nozzle 4 of the row of going up most and a wind nozzle 4 of the row of going up most is 0.5: 1 to the ratio of the distance H=18000mm that shields the end 7.
With embodiment 2; Difference is; Above wind nozzle 4 and overfire air jet 5, be provided with two after-flame wind nozzle sets on the side wall of burner hearth; Each after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, and it is the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width that the axis of after-flame wind nozzle 6 wherein is cut in the burner hearth center.The center of the distance h=9000mm at the center of the after-flame wind nozzle 6 on the every face wall of burner hearth and the center of a wind nozzle 4 of the row of going up most and a wind nozzle 4 of the row of going up most is 0.5: 1 to the ratio of the distance H=18000mm that shields the end 7.
Claims (4)
1.
OnePlant low-nitrogen oxide discharging coal powder tangential combustion device; Comprise burner hearth; (1) four a jiao of wind nozzle (4) and the overfire air jet (5) that is provided with alternate setting in the primary zone of burner hearth; It is an imaginary circle in the center of circle that the axis that is positioned at a wind nozzle (4) or overfire air jet (5) on the same horizontal plane is cut in the burner hearth center, and it is characterized in that: on the four sides wall of a wind nozzle (4) and overfire air jet (5) top burner hearth, be provided with two after-flame wind nozzle sets, each after-flame wind nozzle sets comprises four after-flame wind nozzles (6); On every face wall of burner hearth, arrange one, and be positioned at same horizontal plane; One of them after-flame wind nozzle sets is arranged on the center line of every face wall; The orientation of its axis burner hearth center of after-flame wind nozzle (6) on the same group; The diameter of the imaginary circle that in burner hearth, is formed centrally is zero, and another after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, to be cut in the burner hearth center be the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width to the axis of after-flame wind nozzle (6) on the same group.
2. low-nitrogen oxide discharging coal powder tangential combustion device; Comprise burner hearth; (1) four a jiao of wind nozzle (4) and the overfire air jet (5) that is provided with alternate setting in the primary zone of burner hearth; It is an imaginary circle in the center of circle that the axis that is positioned at a wind nozzle (4) or overfire air jet (5) on the same horizontal plane is cut in the burner hearth center, and it is characterized in that: on the four sides wall of a wind nozzle (4) and overfire air jet (5) top burner hearth, be provided with three after-flame wind nozzle sets, each after-flame wind nozzle sets comprises four after-flame wind nozzles (6); On every face wall of burner hearth, arrange one, and be positioned at same horizontal plane; Wherein two after-flame wind nozzle sets are arranged on the center line of every face wall; The orientation of its axis burner hearth center of after-flame wind nozzle (6) on the same group; The diameter of the imaginary circle that in burner hearth, is formed centrally is zero, and another after-flame wind nozzle sets is arranged on the vertical curve that departs from every face wall center line, to be cut in the burner hearth center be the imaginary circle of the diameter d in the center of circle smaller or equal to 2/3 furnace width to the axis of after-flame wind nozzle (6) on the same group.
3. according to claim 1 or claim 2 a kind of low-nitrogen oxide discharging coal powder tangential combustion device; It is characterized in that the center of the distance h at the center of the after-flame wind nozzle (6) on the every face wall of burner hearth and the center of a wind nozzle of the row of going up (4) most and a wind nozzle of the row of going up (4) most is 0.1-0.5:1 to the ratio of the distance H of shielding the end (7).
4. according to claim 1 or claim 2 a kind of low-nitrogen oxide discharging coal powder tangential combustion device is characterized in that the ratio that the air quality that said after-flame wind nozzle (6) passes through accounts for the total air quality of boiler combustion is 10%-30%.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910054141A CN101598333B (en) | 2009-06-30 | 2009-06-30 | Low-nitrogen oxide discharging coal powder tangential combustion device |
| TR2011/00804T TR201100804T1 (en) | 2009-06-30 | 2009-09-21 | Powder coal tangential ignition device for low NOx emission |
| PCT/CN2009/001056 WO2011000136A1 (en) | 2009-06-30 | 2009-09-21 | Tangential pulverized coal combustion device for low nox emission |
| ZA2011/00735A ZA201100735B (en) | 2009-06-30 | 2011-01-28 | A pulverized coal tangential firing device of low nox emission |
| CL2011000200A CL2011000200A1 (en) | 2009-06-30 | 2011-01-31 | Tangential ignition device of pulverized carbon for low emissions of nox, of a combustion device, in whose combustion hearth the primary and secondary air nozzles are staggered in each of the corners of the main combustion zone and has at least two groups of burnt air nozzles. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910054141A CN101598333B (en) | 2009-06-30 | 2009-06-30 | Low-nitrogen oxide discharging coal powder tangential combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598333A CN101598333A (en) | 2009-12-09 |
| CN101598333B true CN101598333B (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910054141A Active CN101598333B (en) | 2009-06-30 | 2009-06-30 | Low-nitrogen oxide discharging coal powder tangential combustion device |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN101598333B (en) |
| CL (1) | CL2011000200A1 (en) |
| TR (1) | TR201100804T1 (en) |
| WO (1) | WO2011000136A1 (en) |
| ZA (1) | ZA201100735B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014194855A1 (en) * | 2013-06-08 | 2014-12-11 | 国家电网公司 | Low-nitrogen oxide straight-through pulverized coal combustion apparatus applicable to lean coal-fired boiler |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737771B (en) * | 2009-12-18 | 2012-02-01 | 上海锅炉厂有限公司 | Multistage over fire air distributing mode |
| CN101986028B (en) * | 2010-11-18 | 2012-04-04 | 浙江大学 | Low-NOx W-type flame boiler with dry bottom hopper and furnace bottom air supplies distributed in bielliptical shape |
| CN102012020B (en) * | 2010-12-18 | 2013-05-08 | 华北电力大学（保定） | Horizontal swinging wall type tangential circle combustion method and combustion device |
| CN102506419A (en) * | 2011-09-30 | 2012-06-20 | 哈尔滨工业大学 | Wall-type arranged two-stage burn-up air device |
| CN102721043B (en) * | 2012-07-10 | 2014-12-17 | 烟台龙源电力技术股份有限公司 | Pulverized coal fired boiler with wall-attachment secondary air and grid burning-out air |
| CN102901209A (en) * | 2012-10-31 | 2013-01-30 | 山西蓝天环保设备有限公司 | Large-sized pulverized-coal combustion hot water boiler |
| US9696030B2 (en) | 2013-01-28 | 2017-07-04 | General Electric Technology Gmbh | Oxy-combustion coupled firing and recirculation system |
| CN103206716B (en) * | 2013-02-01 | 2015-10-07 | 西安热工研究院有限公司 | The low NO of many coals ecad xcombustion system |
| CN104061567A (en) * | 2014-03-28 | 2014-09-24 | 广东电网公司电力科学研究院 | Low-nitrogen modified large-scale power station boiler device and application method thereof |
| CN106110863B (en) * | 2016-08-08 | 2018-12-04 | 中昊黑元化工研究设计院有限公司 | A kind of boiler with tailed method of denitration |
| CN107620954B (en) * | 2017-08-23 | 2019-07-12 | 清华大学 | Pollutant emission control method in circle of contact pulverized coal firing boiler furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1092897A (en) * | 1977-09-16 | 1981-01-06 | Arun K. Mehta | Fuel firing method |
| US5809910A (en) * | 1992-05-18 | 1998-09-22 | Svendssen; Allan | Reduction and admixture method in incineration unit for reduction of contaminants |
| EP0976977B1 (en) * | 1998-07-29 | 2003-03-26 | Mitsubishi Heavy Industries, Ltd. | Pulverized coal burner |
| CN1786564A (en) * | 2005-12-20 | 2006-06-14 | 西安热工研究院有限公司 | Spliting arranging method for new three area burner of tangential circle boiler |
| CN101245919A (en) * | 2008-01-17 | 2008-08-20 | 上海交通大学 | Method for controlling considerable coal-fired boiler NOx discharge by multilevel reduction wind |
| CN201262392Y (en) * | 2008-07-29 | 2009-06-24 | 新疆电力科学研究院 | Anti-coking secondary air combustor of pulverized coal fired boiler |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0356011U (en) * | 1989-10-03 | 1991-05-29 | ||
| JP3035054B2 (en) * | 1992-01-31 | 2000-04-17 | 三菱重工業株式会社 | Fine solid fuel combustion equipment |
| JP3986230B2 (en) * | 2000-02-17 | 2007-10-03 | 三菱重工業株式会社 | Inverted boiler equipment |
| US20040221777A1 (en) * | 2003-05-09 | 2004-11-11 | Alstom (Switzerland) Ltd | High-set separated overfire air system for pulverized coal fired boilers |
| CN1873325B (en) * | 2005-05-31 | 2013-05-29 | 巴布考克及威尔考克斯公司 | Reoriented overheat air vent for reducing NO2 produced from coal powder burner |
| CN101315184B (en) * | 2008-06-17 | 2010-06-09 | 哈尔滨工业大学 | Wall type arranged horizontal rich-lean direct current combustion device |
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2009
- 2009-06-30 CN CN200910054141A patent/CN101598333B/en active Active
- 2009-09-21 WO PCT/CN2009/001056 patent/WO2011000136A1/en active Application Filing
- 2009-09-21 TR TR2011/00804T patent/TR201100804T1/en unknown
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2011
- 2011-01-28 ZA ZA2011/00735A patent/ZA201100735B/en unknown
- 2011-01-31 CL CL2011000200A patent/CL2011000200A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1092897A (en) * | 1977-09-16 | 1981-01-06 | Arun K. Mehta | Fuel firing method |
| US5809910A (en) * | 1992-05-18 | 1998-09-22 | Svendssen; Allan | Reduction and admixture method in incineration unit for reduction of contaminants |
| EP0976977B1 (en) * | 1998-07-29 | 2003-03-26 | Mitsubishi Heavy Industries, Ltd. | Pulverized coal burner |
| CN1786564A (en) * | 2005-12-20 | 2006-06-14 | 西安热工研究院有限公司 | Spliting arranging method for new three area burner of tangential circle boiler |
| CN101245919A (en) * | 2008-01-17 | 2008-08-20 | 上海交通大学 | Method for controlling considerable coal-fired boiler NOx discharge by multilevel reduction wind |
| CN201262392Y (en) * | 2008-07-29 | 2009-06-24 | 新疆电力科学研究院 | Anti-coking secondary air combustor of pulverized coal fired boiler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014194855A1 (en) * | 2013-06-08 | 2014-12-11 | 国家电网公司 | Low-nitrogen oxide straight-through pulverized coal combustion apparatus applicable to lean coal-fired boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| CL2011000200A1 (en) | 2011-08-19 |
| TR201100804T1 (en) | 2011-06-21 |
| CN101598333A (en) | 2009-12-09 |
| WO2011000136A1 (en) | 2011-01-06 |
| ZA201100735B (en) | 2012-03-28 |
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