CN203099814U - Pulverized coal burner - Google Patents
Pulverized coal burner Download PDFInfo
- Publication number
- CN203099814U CN203099814U CN 201220704328 CN201220704328U CN203099814U CN 203099814 U CN203099814 U CN 203099814U CN 201220704328 CN201220704328 CN 201220704328 CN 201220704328 U CN201220704328 U CN 201220704328U CN 203099814 U CN203099814 U CN 203099814U
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- China
- Prior art keywords
- secondary air
- chamber
- air chamber
- coal burner
- airduct
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- Expired - Lifetime
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Abstract
The utility model discloses a pulverized coal burner. A secondary bellow is divided into an inner secondary air chamber and an outer secondary air chamber. An inner secondary air pipe is arranged in the inner secondary air chamber. A primary air pipe is arranged in the inner secondary air pipe. A central pipe is arranged in the primary air pipe. A light oil gun and an ignition electrode are mounted in the central pipe. A group of vanes are further annularly disposed in the inner secondary air chamber. The vanes blow air flow of the inner secondary air chamber into an inner secondary air duct between the inner secondary air pipe and the primary air pipe. A pre-combustion chamber is wrapped in the outer secondary air chamber. A swirler is disposed in the primary air pipe. A combustion stabilizer is disposed at an outlet of the primary air pipe. The pulverized coal burner is fast in temperature rising, low in operation cost, low in NOx emission, even in pulverized coal distribution, thorough in pulverized coal combustion and the like.
Description
Technical field
The utility model relates to a kind of coal burner, particularly about a kind of be suitable for using in the industrial coal powder boiler have steady combustion, a low NO
xThe turbulent burner of discharging.
Technical background
China's energy resource structure is still based on coal, and industry coal-boiler occupies the energy resource consumption significant proportion.Existing coal-burned industrial boiler is in the majority with chain fire-gate grate firing boiler, and operational efficiency is low.And the industrial coal powder boiler that adopts floater to fire then has high energy utilization rate.In traditional coal powder burner, be used in the large-sized boiler of electricity generation boiler more, can not directly apply to middle-size and small-size industrial coal powder boiler.Develop a kind of be suitable for that small and medium-sized industrial coal powder boilers uses can organize coal dust firing by stability and high efficiency, have low NO simultaneously again
xThe coal burner of discharging meets national energy policy, also is market in urgent need.
Summary of the invention
At above problem, to be solved in the utility model is the above-mentioned defective that prior art exists, and aims to provide a kind of steady combustion of having of Industrial Boiler, efficient and low NO of being applicable to
xThe coal burner of discharging.
For achieving the above object, the utility model is taked following technical scheme:
A kind of coal burner comprises secondary air box, it is characterized in that described secondary air box is separated into interior secondary air chamber and outer secondary air chamber; Secondary air chamber is provided with secondary wind air inlet in described, be provided with interior secondary air channel in the secondary air chamber in described, be provided with airduct one time in the secondary air channel in described, be provided with central tube in the described airduct, light oil rifle and ignitor are housed in the described central tube; Also be provided with the blade that one group of annular is provided with in described in the secondary air chamber, described blade with the air-flow of interior secondary air chamber be blown into described in interior secondary air duct between secondary air channel and the airduct; The port of export of secondary air duct connects precombustion chamber in described; Described precombustion chamber is wrapped in the described outer secondary air chamber; Secondary air chamber and outer secondary air chamber are by air door UNICOM in described; Be provided with a cyclone in the described airduct; The exit of a described airduct is provided with stabilizer; Described light oil rifle connects an oil pump; Described ignitor connects ignition transformer.
The utility model is owing to adopt above-mentioned fuselage scheme, and it has the following advantages:
1. the utility model is owing to have precombustion chamber, and the combustion space is little, and quick heating only needs seldom oil and short time coal dust can be lighted, and realizes few oil or tiny-oil ignition, effectively reduces operating cost.
2. the utility model is separated into inside and outside air compartment with secondary air box, forms two air channels, realizes air stage feeding, makes coal dust carry out oxygen debt burning in precombustion chamber, makes burning situation be in reducing atmosphere, can effectively reduce NO
xGeneration, realize low NO
xEnvironmental requirement is satisfied in discharging.
3. be provided with blade in the secondary air chamber in of the present utility model, make the air-flow that passes through produce eddy flow.Eddy flow helps producing the recirculating zone, entrainments high-temperature flue gas, helps catching fire fast of coal dust fuel, can realize the rapid starting/stopping of boiler.
4. coal dust even distribution in a general mood flows is the key of smooth combustion.The utility model is provided with cyclone in an airduct, make a wind breeze airflow that passes through produce rotation, thereby eliminates the coal fines circumferential direction skewness that produces because of an airduct road turning, but produces the radial distribution inequality because of centrifugal force again simultaneously.
5. precombustion chamber of the present utility model is covered by in the outer secondary air chamber, can realize the cooling to precombustion chamber, prevents the precombustion chamber coking and is burnt out.The outlet of outer secondary wind is set in outside the precombustion chamber outlet, and outer secondary wind cut the flame of burner ejection with the direct current form in boiler furnace, to replenish the coal dust required oxygen that fully burns, the completing combustion of realization coal dust fuel.
As further improvement of the utility model, described air door is regulated by choker rod.
As more step improvement of the present utility model, described precombustion chamber comprises an import reamer section, middle cylinder and outlet contraction section, and outlet makes that the flame in the precombustion chamber rotates and the high speed ejection, thereby take away the lime-ash in the precombustion chamber that realization is from deashing less than import.The cone angle of the import reamer of described precombustion chamber is 15 ° ~ 20 °, and the cone angle of outlet contraction section is 20 ° ~ 30 °.
As more step improvement of the present utility model, described light oil rifle and ignitor can be realized igniting automatically by programme-control.Described light oil rifle and ignitor can be realized advance and retreat automatically by programme-control, put in burner hearth during igniting automatically; After finishing, igniting is retracted into automatically in the burner central tube.
As more step improvement of the present utility model, described blade lean angle is adjustable, and regulates the eddy flow that makes the air-flow that passes through produce varying strength by handle mechanism.
As step improvement more of the present utility model, described stabilizer is reamer shape, entrance point is provided with ring gear, make than coarse granule and be refracted into flame kernel because of protruding the stopping of the tooth of stabilizer, then gather the vortex that behind tooth, forms than the fine breeze particle, like this, pulverized coal particle has better distribution in flame region, thereby realizes the temperature combustion of coal dust.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is that the B-B of Fig. 1 is to view.
Among the figure: 1, ignition transformer, 2, ignitor, 3, central tube, 4, an airduct, 5, outer secondary air register adjusting yoke, 6, blade, 7, interior secondary air chamber, 8, the secondary wind inlet, 9, interior secondary air channel, 10, outer secondary air register, 11, outer secondary air chamber, 12, precombustion chamber, 13, outer secondary wind outlet, 14, stabilizer, 15, the light oil rifle, 16, a wind cyclone, 17, secondary air blade regulating handle, 18, oil pump, air channel of 19-, secondary air duct in the 20-, the 20-ring gear, 1201-import reamer section, 1202-middle cylinder, 1203-exports contraction section, 1401-ring gear.
The specific embodiment
In order to describe structure of the present utility model and characteristics in detail, existing following preferred embodiment of act and conjunction with figs. describe.
As shown in Figure 1, a kind of coal burner of the present utility model comprises secondary air box, secondary air chamber 7 and outer secondary air chamber 11 in described secondary air box is separated into; Secondary air chamber 7 is provided with secondary wind air inlet 8 in described, secondary air channel 9 in being provided with in the secondary air chamber 7 in described, be provided with airduct 4 one time in the secondary air channel 9 in described, be provided with central tube 3 in the described airduct 4, light oil rifle 15 and ignitor 2 are housed in the described central tube 3; Also be provided with the blade 6 that one group of annular is provided with in described in the secondary air chamber 7, described blade 6 with the air-flow of interior secondary air chamber 7 be blown into described in interior secondary air duct 20 between secondary air channel 9 and the airduct 4; The port of export of secondary air duct 9 connects precombustion chamber 12 in described; Described precombustion chamber 12 is wrapped in the described outer secondary air chamber 11; Secondary air chamber 7 and outer secondary air chamber 11 are by air door 10 UNICOMs in described, and described air door 10 is regulated by choker rod 5; Be provided with a cyclone 16 in the described airduct 4; The exit of a described airduct 4 is provided with stabilizer 14; Described light oil rifle 15 connects an oil pump 18; Described ignitor 2 connects ignition transformer 1.
Described air door 10 intake velocities are adjustable, and regulate by choker rod 5.
Described precombustion chamber 12 comprises import reamer section 1201, middle cylinder 1202 and outlet contraction section 1203, and outlet is less than import.The cone angle of the import reamer section 1201 of described precombustion chamber 12 is 15 ° ~ 20 °, and the cone angle of outlet contraction section 1203 is 20 ° ~ 30 °.
Described light oil rifle 15 and ignitor 2 are realized igniting automatically by programme-control.Described light oil rifle 15 and ignitor 2 are realized advance and retreat automatically by programme-control, put in burner hearth during igniting automatically; After finishing, igniting is retracted into automatically in the central tube 3 of burner.
With reference to Fig. 2, described blade 6 tilt adjustable, and regulate by handle mechanism 17.
In conjunction with Fig. 3, described stabilizer 14 is reamer shape, and entrance point is provided with ring gear 1401.
When the utility model is installed, whole burner is connected with flange on the burner mount pad of boiler, an airduct 4 is linked to each other with the power transportation pipe (not shown in figure 1), secondary wind inlet 8 is connected with an air blast (not shown in figure 1).
The course of work of the present utility model is as follows:
At first open boiler induced-draft fan and air blast and carry out prepurge, regulate blower fan to the combustion chamber draft that requires.Start oil pump 18 and ignition transformer 1, make the oil nozzle ejection of fuel oil, and light by ignitor 2 through light oil rifle 15.When starting oil pump 18 and ignition transformer 1, light oil rifle 15 and ignitor 2 stretch out from central tube 3 automatically.After fuel oil was lighted for 10 seconds, start coal dust conveying device (not shown in figure 1), coal dust produces the rotation back in an air channel between airduct 4 and central tube 3 19 under the transporting of a wind by cyclone 16 and sprays at stabilizer 14 places, and by the fuel oil flame ignition.Secondary wind enters from secondary wind inlet 8 simultaneously, is divided into inside and outside two bursts of secondary general mood stream by two air compartments that are separated into, and interior secondary wind produces rotation by blade 6, enters the burning that precombustion chamber 12 participates in coal dust through interior secondary air duct 20.Wind and interior secondary wind are not enough to support coal dust completing combustion in precombustion chamber 12, make it to be in oxygen debt reducing environment, effective like this NO that suppressed
xGeneration.Lighted and fuel oil cofiring after 10 to 30 seconds at coal dust, closed the light oil rifle, burnt by coal dust fully.Light oil rifle and ignitor return in the central tube automatically, prevent to be burnt out.Wind and interior secondary wind are eddy flow, and precombustion chamber 12 adopts import and the outlet that has cone angle simultaneously, and outlet is less than import, make flames rotation and ejection at a high speed in the precombustion chamber 12, thereby take away the lime-ash in the precombustion chamber 12, realize from deashing.Outer secondary air chamber 11 is wrapped in outside the precombustion chamber 12, and outer secondary wind can be realized the cooling to precombustion chamber, prevents the precombustion chamber coking and is burnt out.Outer secondary wind outlet 13 is set in outside precombustion chamber 12 outlets, and outer secondary wind cut the flame of burner ejection with the direct current form in boiler furnace, to replenish the coal dust required oxygen that fully burns, the completing combustion of realization coal dust fuel.
What should be understood that is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any utility model that does not exceed in the utility model connotation scope is created, and all falls within the protection domain of the present utility model.
Claims (8)
1. a coal burner comprises secondary air box, it is characterized in that described secondary air box is separated into interior secondary air chamber (7) and outer secondary air chamber (11); Secondary air chamber (7) is provided with secondary wind air inlet (8) in described, be provided with interior secondary air channel (9) in the secondary air chamber (7) in described, be provided with an airduct (4) in the secondary air channel (9) in described, be provided with central tube (3) in the described airduct (4), light oil rifle (15) and ignitor (2) are housed in the described central tube (3); Also be provided with the blade (6) that one group of annular is provided with in described in the secondary air chamber (7), described blade (6) with the air-flow of interior secondary air chamber (7) be blown into described in interior secondary air duct (20) between secondary air channel (9) and the airduct (4); The port of export of secondary air duct (9) connects precombustion chamber (12) in described; Described precombustion chamber (12) is wrapped in the described outer secondary air chamber (11); Secondary air chamber (7) and outer secondary air chamber (11) are by air door (10) UNICOM in described; Be provided with a cyclone (16) in the described airduct (4); The exit of a described airduct (4) is provided with stabilizer (14); Described light oil rifle (15) connects an oil pump (18); Described ignitor (2) connects ignition transformer (1).
2. a kind of coal burner as claimed in claim 1 is characterized in that described air door (10) regulates by choker rod (5).
3. a kind of coal burner as claimed in claim 1 it is characterized in that described precombustion chamber (12) comprises import reamer section (1201), middle cylinder (1202) and outlet contraction section (1203), and outlet is less than import.
4. a kind of coal burner as claimed in claim 3, the cone angle that it is characterized in that the import reamer section (1201) of described precombustion chamber (12) is 15 ° ~ 20 °, the cone angle of outlet contraction section (1203) is 20 ° ~ 30 °.
5. a kind of coal burner as claimed in claim 1 is characterized in that described light oil rifle (15) and ignitor (2) are by programme-control realization igniting automatically.
6. a kind of coal burner as claimed in claim 5 is characterized in that described light oil rifle (15) and ignitor (2) by the automatic advance and retreat of programme-control realization, put in burner hearth automatically during igniting; After finishing, igniting is retracted into automatically in the central tube (3) of burner.
7. a kind of coal burner as claimed in claim 1 is characterized in that described blade (6) tilt adjustable, and regulates by handle mechanism (17).
8. as any one described a kind of coal burner of claim 1-7, it is characterized in that described stabilizer (14) is reamer shape, entrance point is provided with ring gear (1401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704328 CN203099814U (en) | 2012-12-18 | 2012-12-18 | Pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220704328 CN203099814U (en) | 2012-12-18 | 2012-12-18 | Pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203099814U true CN203099814U (en) | 2013-07-31 |
Family
ID=48851212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220704328 Expired - Lifetime CN203099814U (en) | 2012-12-18 | 2012-12-18 | Pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203099814U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672880A (en) * | 2013-09-16 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Powder burner |
| CN103697469A (en) * | 2013-11-20 | 2014-04-02 | 西安交通大学 | Pulverized coal flame preheating low NOx burner system |
| CN103759258A (en) * | 2014-01-13 | 2014-04-30 | 徐州燃控科技股份有限公司 | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor |
| CN103994429A (en) * | 2014-06-17 | 2014-08-20 | 张友晶 | Pulverized coal burner |
| CN105020743A (en) * | 2015-07-15 | 2015-11-04 | 哈尔滨工程大学 | Fuel autoxidation splitting and axial staged combustion chamber |
| CN105135427A (en) * | 2015-09-01 | 2015-12-09 | 山东华臻重工有限公司 | Coal powder combustion system |
| CN105465780A (en) * | 2015-12-23 | 2016-04-06 | 杭州燃油锅炉有限公司 | Ultralow NOx pulverized coal burner |
| CN106196043A (en) * | 2016-08-31 | 2016-12-07 | 福建铁拓机械有限公司 | Efficiently igniting and the coal burner of burning for bituminous mixing plant |
| CN106196044A (en) * | 2016-08-31 | 2016-12-07 | 福建永恒能源管理有限公司 | Low NO is put at a kind of end being applicable to significantly load adjustment |
| CN107255272A (en) * | 2017-07-31 | 2017-10-17 | 中煤科工清洁能源股份有限公司 | A kind of coal burner |
| CN107575860A (en) * | 2017-09-21 | 2018-01-12 | 哈尔滨工业大学 | A kind of pulverized coal cyclone burner |
| CN108167826A (en) * | 2017-12-29 | 2018-06-15 | 浙江百能科技有限公司 | A kind of turbulent burner for being used for fuel oil or gas steam injection boiler |
| CN108413436A (en) * | 2018-03-30 | 2018-08-17 | 烟台龙源电力技术股份有限公司 | Pre-chamber arrangement and combustion system |
-
2012
- 2012-12-18 CN CN 201220704328 patent/CN203099814U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672880A (en) * | 2013-09-16 | 2014-03-26 | 北京神雾环境能源科技集团股份有限公司 | Powder burner |
| CN103697469B (en) * | 2013-11-20 | 2015-10-28 | 西安交通大学 | The low NO of a kind of pulverized coal flame preheating xbuner system |
| CN103697469A (en) * | 2013-11-20 | 2014-04-02 | 西安交通大学 | Pulverized coal flame preheating low NOx burner system |
| CN103759258B (en) * | 2014-01-13 | 2016-06-15 | 徐州科融环境资源股份有限公司 | A kind of joint low nitrogen vortex burner of oil/gas ignition smooth combustion |
| CN103759258A (en) * | 2014-01-13 | 2014-04-30 | 徐州燃控科技股份有限公司 | Fuel-saving/gas-ignition stable-combustion low-nitrogen swirling pulverized coal combustor |
| CN103994429A (en) * | 2014-06-17 | 2014-08-20 | 张友晶 | Pulverized coal burner |
| CN105020743A (en) * | 2015-07-15 | 2015-11-04 | 哈尔滨工程大学 | Fuel autoxidation splitting and axial staged combustion chamber |
| CN105135427A (en) * | 2015-09-01 | 2015-12-09 | 山东华臻重工有限公司 | Coal powder combustion system |
| CN105135427B (en) * | 2015-09-01 | 2017-07-11 | 山东富海泰来新能源科技有限公司 | Pulverized coal combustion system |
| CN105465780A (en) * | 2015-12-23 | 2016-04-06 | 杭州燃油锅炉有限公司 | Ultralow NOx pulverized coal burner |
| CN106196044A (en) * | 2016-08-31 | 2016-12-07 | 福建永恒能源管理有限公司 | Low NO is put at a kind of end being applicable to significantly load adjustment |
| CN106196043A (en) * | 2016-08-31 | 2016-12-07 | 福建铁拓机械有限公司 | Efficiently igniting and the coal burner of burning for bituminous mixing plant |
| CN106196043B (en) * | 2016-08-31 | 2018-06-29 | 福建铁拓机械有限公司 | For the efficient coal burner lighted a fire and burn of bituminous mixing plant |
| CN107255272A (en) * | 2017-07-31 | 2017-10-17 | 中煤科工清洁能源股份有限公司 | A kind of coal burner |
| CN107575860A (en) * | 2017-09-21 | 2018-01-12 | 哈尔滨工业大学 | A kind of pulverized coal cyclone burner |
| CN107575860B (en) * | 2017-09-21 | 2018-07-20 | 哈尔滨工业大学 | A kind of pulverized coal cyclone burner |
| CN108167826A (en) * | 2017-12-29 | 2018-06-15 | 浙江百能科技有限公司 | A kind of turbulent burner for being used for fuel oil or gas steam injection boiler |
| CN108413436A (en) * | 2018-03-30 | 2018-08-17 | 烟台龙源电力技术股份有限公司 | Pre-chamber arrangement and combustion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 311115 Pingyao Town, Yuhang District of Guangzhou Road No. 1 Patentee after: HANGZHOU JUNENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: Hangzhou City, Zhejiang province 311115 Pingyao Town, Yuhang District of Guangzhou Road No. 1 Patentee before: HANGZHOU JUNENG BOILER Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |