CN205579553U - Ultralow NOx coal burner - Google Patents
Ultralow NOx coal burner Download PDFInfo
- Publication number
- CN205579553U CN205579553U CN201521095354.5U CN201521095354U CN205579553U CN 205579553 U CN205579553 U CN 205579553U CN 201521095354 U CN201521095354 U CN 201521095354U CN 205579553 U CN205579553 U CN 205579553U
- Authority
- CN
- China
- Prior art keywords
- air
- cyclone
- ultralow
- tuber pipe
- coal burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 239000003381 stabilizer Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 206010021143 Hypoxia Diseases 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 208000018875 hypoxemia Diseases 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 13
- 239000002817 coal dust Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- 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 utility model discloses an ultralow NOx coal burner, interior tuber pipe of a tuber pipe, secondary and the outer tuber pipe of secondary including secondary wind box, electronic air register, coaxial setting, secondary wind box in be equipped with in secondary plenum and outer secondary plenum, interior secondary plenum one end with tuber pipe and secondary in interior secondary air duct UNICOM between the tuber pipe, the other end is equipped with first backward flow wind gap and interior secondary air nozzle, outer secondary plenum one end with the secondary in outer secondary air duct UNICOM between the outer tuber pipe of tuber pipe and secondary, the other end is equipped with second backward flow wind gap and outer secondary air nozzle. The utility model discloses a hypoxemia wind of different concentration is realized sending in grades in two wind channels, reduces the oxygen concentration of combustion area and the peak temperature of flame as far as possible for the oxygen debt burning of buggy makes the combustion area environment be in reducing atmosphere, and the flame root forms the rich fuel region of oxygen deficiency, can effectively reduce NOx's production, realizes that low NOx discharges, satisfies the environmental protection requirement.
Description
Technical field
This utility model relates to a kind of coal burner, especially with regard to a kind of be suitable in industrial coal powder boiler using there is steady combustion, ultralow NOxTurbulent burner is put at the end of discharge.
Background technology
China's energy resource structure is still based on coal, and industry coal-boiler occupies 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 using floater to fire, then there is high energy utilization rate.In traditional coal powder burner, it is used in the large-sized boiler of electricity generation boiler, it is impossible to directly apply to middle-size and small-size industrial coal powder boiler more.Develop a kind of be suitable for small and medium-sized industrial coal powder boilers use can stability and high efficiency tissue coal dust firing, while there is again ultralow NOxThe coal burner of discharge, meets national energy policy, is also market in urgent need.
Summary of the invention
The problems referred to above being prior art and existing to be solved in the utility model, it is desirable to provide a kind of be applicable to Industrial Boiler there is steady combustion, efficient and ultralow NOxCoal burner is put at the end of discharge.
For solve the problems referred to above, this utility model by the following technical solutions: a kind of ultralow NOxCoal burner, including the outer airduct of airduct in secondary air box, electric adjustable air door, the primary air piping being coaxially disposed, secondary and secondary, described primary air piping is arranged at axle center, central canal it is provided with in it, light car oil rifle and ignitor it is provided with in described central canal, described light car oil rifle connects an oil pump, and described ignitor connects ignition transformer, it is characterised in that be provided with inner second air room and outer second air room in described secondary air box；Inner second air road UNICOM between airduct in described one end, inner second air room and described primary air piping and secondary, the other end is provided with the first backflow air port and inner second air mouth；Outer second air road UNICOM between the outer airduct of airduct and secondary in described one end, outer second air room and described secondary, the other end is provided with the second backflow air port and outer second air mouth；It is provided with inner second air cyclone in described inner second air road；It is provided with outer second air cyclone in described outer second air road；Described electric adjustable air door includes the first backflow wind air register, the second backflow wind air register, inner second air air register and the outer second air air register being arranged on corresponding air port.
Compared with prior art, this utility model has the advantage that
1, secondary air box is separated into inside and outside air compartment by this utility model, form double air channel, realize classification and send the hypoxia wind of variable concentrations, reduce the oxygen concentration of combustion zone and the peak temperature of flame as far as possible, make the oxygen debt burning of coal dust, making combustion zone environment be in reducing atmosphere, flame root forms anoxia fuel-rich regions, is effectively reduced NOxGeneration, it is achieved low NOxDischarge, meets environmental requirement.
2, backflow wind and secondary wind are respectively fed in inside and outside secondary air duct by this utility model by rational proportioning, due to backflow wind be the flue gas that produced by boiler through the cooling of high/low temperature air preheater and by purifier dedusting after reclaim and obtain, its oxygen content is more much lower than air, thus coal dust can be made further to enter after burner hearth oxygen debt burning in various degree, reduce NOxGeneration, it is achieved ultralow nitrogen requirement.
3, backflow wind and secondary wind are respectively fed in inside and outside secondary air duct by this utility model by rational proportioning, with burner centre as the center of circle, in the way of concentric circular expands step by step, wind and the mixed proportion of secondary wind thus regulation layer by layer refluxes, reach the oxygen debt burning of the different degree of flame regional, reduce the generation of NOx further, it is achieved ultralow nitrogen requirement.
As improvement of the present utility model, the blade of the tilt adjustable of one group of annular setting is had in described inner second air cyclone, described inner second air pipe is provided with and the inclined-plane of described inner second air cyclone relative configuration, and described inner second air cyclone carries out eddy flow regulation by pull bar.Regulate cyclone position in inner second air road by pull bar, make blade contact with the diverse location on the inclined-plane of inner second air pipe, thus regulate the angle of inclination of blade, make the air-flow passed through produce the eddy flow of varying strength.Eddy flow is conducive to producing recirculating zone, and volume is inhaled the quick ignition of high-temperature flue gas, beneficially Pulverized Coal, can be realized the rapid starting/stopping of boiler.
As further improvement of the utility model, the blade of the tilt adjustable of one group of annular setting is had in described outer second air cyclone, described outer second air pipe is provided with and the inclined-plane of described outer second air cyclone relative configuration, and described outer second air cyclone carries out eddy flow regulation by pull bar.By the position in pull bar regulation cyclone secondary air duct outside, make blade contact with the diverse location on the inclined-plane of outer second air pipe, thus regulate the angle of inclination of blade, make the air-flow passed through produce the eddy flow of varying strength.Eddy flow is conducive to producing recirculating zone, and volume is inhaled the quick ignition of high-temperature flue gas, beneficially Pulverized Coal, can be realized the rapid starting/stopping of boiler.
Owing to First air and inner second air all use eddy flow, and carry out eddy flow regulation by pull bar, burner hearth size can be adapted to according to the length and width of furnace width and length reasonable adjusting flame, more efficiently prevent from the generation of coking.
Further improving as of the present utility model, the shaft design outside the air inlet of described primary air piping becomes cyclone cylinder structure, makes wind powder be sufficiently mixed rear eddy flow and enters burner hearth.Owing to cyclone cylinder is to be formed by the body of primary air piping self, it is not necessary to external parts so that this utility model structure is the compactest.
Further improving as of the present utility model, the outlet of described primary air piping is provided with annular stabilizer.Described annular stabilizer, with expanding angle, can eliminate rotary gas or radial distribution that breeze airflow produces because of centrifugal force is uneven, cause First air air-flow to have greatly at burner outlet and spread and rotates, and formation smoke backflow makes burning more stable.
Accompanying drawing explanation
The utility model is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is a kind of ultralow NO of this utility modelxThe structural representation of coal burner.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is that the B-B of Fig. 1 is to sectional view.
Fig. 4 is that the C-C of Fig. 1 is to sectional view.
Fig. 5 is that the D-D of Fig. 1 is to sectional view.
Fig. 6 is that the E-E of Fig. 1 is to sectional view.
Detailed description of the invention
Reference 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the ultralow NO of one of the present utility modelxCoal burner, including the outer airduct 12 of airduct 13 in secondary air box 8, electric adjustable air door 7, the primary air piping 4 being coaxially disposed, secondary and secondary, described primary air piping 4 is arranged at axle center, central canal 3 it is provided with in it, light car oil rifle 15 and ignitor 2 it is provided with in described central canal 3, described light car oil rifle 15 connects an oil pump 21, and described ignitor 2 connects ignition transformer 1, it is characterised in that be provided with inner second air room 6 and outer second air room 9 in described secondary air box 8；Inner second air road 17 UNICOM between airduct 13 in described one end, inner second air room 6 and described primary air piping 4 and secondary, the other end is provided with the first backflow air port 24 and inner second air mouth 23；Outer second air road 11 UNICOM between the outer airduct 12 of airduct 13 and secondary in described one end, outer second air room 9 and described secondary, the other end is provided with the second backflow air port 25 and outer second air mouth 26；It is provided with inner second air cyclone 18 in described inner second air road 17；It is provided with outer second air cyclone 10 in described outer second air road 11；Described electric adjustable air door 7 includes first backflow wind air register the 702, second backflow wind air register 703, inner second air air register 701 and the outer second air air register 704 being arranged on corresponding air port.
The blade of the tilt adjustable of one group of annular setting is had in described inner second air cyclone 18, described inner second air pipe 13 is provided with and the inclined-plane 19 of described inner second air cyclone 18 relative configuration, and described inner second air cyclone 18 carries out eddy flow regulation by pull bar 20.
The blade of the tilt adjustable of one group of annular setting is had in described outer second air cyclone 10, described outer second air pipe 12 is provided with and the inclined-plane 16 of described outer second air cyclone 10 relative configuration, and described outer second air cyclone 10 carries out eddy flow regulation by pull bar 5.
The outlet of described primary air piping 4 is provided with annular stabilizer 14.Described annular stabilizer 14 is with expanding angle.
With reference to Fig. 6, the shaft design outside the air inlet of described primary air piping 4 becomes cyclone cylinder 22 structure.
Work process of the present utility model is as follows:
First turning on boiler induced-draft fan and aerator pre-purges, regulation blower fan is to the combustion chamber draft required.Start oil pump 21 and ignition transformer 1, make fuel oil spray through the oil nozzle of oil gun 15, and lighted by ignitor 2.When starting oil pump 21 and ignition transformer 1, oil gun 15 and ignitor 2 stretch out automatically from central canal.After fuel oil is ignited 10 seconds, starting pulverized coal conveying device (not shown in figure 1), coal dust is gone out ejection through primary air piping 4 at stabilizer 14 by cyclone cylinder 22 under the transport of First air, and by fuel oil flame ignition.
It is mixed to form inner second air from the inner second air mouth 23 of bellows 8 and the secondary wind in the first backflow air port 24 with backflow wind entrance inner second air room 6 simultaneously, enters inner second air road 17, produce rotation by inner second air cyclone 18；It is mixed to form outer second air from the outer second air mouth 26 of bellows 8 and the secondary wind in the second backflow air port 25 with backflow wind entrance outer second air room 9, enters outer second air road 11, produce rotation by outer second air cyclone 10.
Coal dust be ignited with fuel oil cofiring 10 to 30 seconds after, close torch oil gun, burnt by coal dust completely.Oil gun and ignitor automatically fall back in central canal, prevent from being burned.Corresponding air port is individually adjusted by interior outer second air by first backflow wind air register the 702, second backflow wind air register 703, inner second air air register 701 and outer second air air register 704, secondary wind and backflow wind is made to carry out rational proportion, and be layered oxygen debt burning, so that coal dust realizes the burning completely of Pulverized Coal.
It is understood that above-described embodiment is simply to explanation of the present utility model rather than to restriction of the present utility model, any without departing from the utility model creation in this utility model spirit, within each falling within protection domain of the present utility model.
Claims (6)
1. a ultralow NOxCoal burner, including secondary air box (8), electric adjustable air door (7), the primary air piping (4) being coaxially disposed, airduct (13) and the outer airduct (12) of secondary in secondary, described primary air piping (4) is arranged at axle center, central canal (3) it is provided with in it, light car oil rifle (15) and ignitor (2) it is provided with in described central canal (3), described light car oil rifle (15) connects an oil pump (21), described ignitor (2) connects ignition transformer (1), inner second air room (6) and outer second air room (9) it are provided with in it is characterized in that described secondary air box (8)；Inner second air road (17) UNICOM between airduct (13) in described (6) one end, inner second air room and described primary air piping (4) and secondary, the other end is provided with the first backflow air port (24) and inner second air mouth (23)；Outer second air road (11) UNICOM between the outer airduct (12) of airduct (13) and secondary in described (9) one end, outer second air room and described secondary, the other end is provided with the second backflow air port (25) and outer second air mouth (26)；It is provided with inner second air cyclone (18) in described inner second air road (17)；It is provided with outer second air cyclone (10) in described outer second air road (11)；Described electric adjustable air door (7) includes the first backflow wind air register (702), the second backflow wind air register (703), inner second air air register (701) and the outer second air air register (704) being arranged on corresponding air port.
A kind of ultralow NO the most as claimed in claim 1xCoal burner, the blade of the tilt adjustable of one group of annular setting is had in it is characterized in that described inner second air cyclone (18), described inner second air pipe (13) is provided with the inclined-plane (19) being oppositely disposed with described inner second air cyclone (18), and described inner second air cyclone (18) carries out eddy flow regulation by pull bar (20).
A kind of ultralow NO the most as claimed in claim 1xCoal burner, the blade of the tilt adjustable of one group of annular setting is had in it is characterized in that described outer second air cyclone (10), described outer second air pipe (12) is provided with the inclined-plane (16) being oppositely disposed with described outer second air cyclone (10), and described outer second air cyclone (10) carries out eddy flow regulation by pull bar (5).
A kind of ultralow NO the most as claimed in claim 1xCoal burner, it is characterised in that the shaft design outside the air inlet of described primary air piping (4) becomes cyclone cylinder (22) structure.
5. the ultralow NO of one as described in claim 1-4 any onexCoal burner, it is characterised in that the outlet of described primary air piping (4) is provided with annular stabilizer (14).
A kind of ultralow NO the most as claimed in claim 5xCoal burner, it is characterised in that described annular stabilizer (14) is with expanding angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521095354.5U CN205579553U (en) | 2015-12-23 | 2015-12-23 | Ultralow NOx coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521095354.5U CN205579553U (en) | 2015-12-23 | 2015-12-23 | Ultralow NOx coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205579553U true CN205579553U (en) | 2016-09-14 |
Family
ID=56882760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521095354.5U Expired - Fee Related CN205579553U (en) | 2015-12-23 | 2015-12-23 | Ultralow NOx coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205579553U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465780A (en) * | 2015-12-23 | 2016-04-06 | 杭州燃油锅炉有限公司 | Ultralow NOx pulverized coal burner |
| CN111121012A (en) * | 2020-01-14 | 2020-05-08 | 上海迎韦热能设备有限公司 | A low nitrogen fuel burner |
-
2015
- 2015-12-23 CN CN201521095354.5U patent/CN205579553U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465780A (en) * | 2015-12-23 | 2016-04-06 | 杭州燃油锅炉有限公司 | Ultralow NOx pulverized coal burner |
| CN111121012A (en) * | 2020-01-14 | 2020-05-08 | 上海迎韦热能设备有限公司 | A low nitrogen fuel burner |
| CN111121012B (en) * | 2020-01-14 | 2025-01-07 | 上海迎韦热能设备有限公司 | A low nitrogen fuel burner |
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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 Fengdu Pingyao Town, Yuhang District Industrial Zone Road, Yangcheng Road No. 1 Patentee after: Hangzhou environmental protection Polytron Technologies Inc Address before: Hangzhou City, Zhejiang province 311115 Fengdu Pingyao Town, Yuhang District Industrial Zone Road, Yangcheng Road No. 1 Patentee before: Hangzhou Juneng Boiler Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20191223 |