CN2126893Y - Large range, variable load, dense and dilute phase pulverized coal combustion device - Google Patents
Large range, variable load, dense and dilute phase pulverized coal combustion device Download PDFInfo
- Publication number
- CN2126893Y CN2126893Y CN 92226003 CN92226003U CN2126893Y CN 2126893 Y CN2126893 Y CN 2126893Y CN 92226003 CN92226003 CN 92226003 CN 92226003 U CN92226003 U CN 92226003U CN 2126893 Y CN2126893 Y CN 2126893Y
- Authority
- CN
- China
- Prior art keywords
- wind
- dense
- outer sleeve
- secondary air
- phase
- 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 15
- 238000002485 combustion reaction Methods 0.000 title abstract description 3
- 239000000843 powder Substances 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 210000003128 head Anatomy 0.000 claims 3
- 210000004894 snout Anatomy 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
Images
Abstract
本实用新型公开了一种大量程、变负荷、浓稀相 煤粉燃烧装置，它依次设有浓相一次风内套筒、浓相 一次风外套筒、中环直流风外套筒、旋流二次风隔套 筒、旋流二次风外套筒，浓相一次风内套筒一端接有 浓相一次风锥形可调螺旋体，另一端接有后罩和调节 手柄，在浓相一次风内套筒内设有点火油枪，浓相一 次风外套筒一端与一次风弯头分叉风粉分离器相接， 另一端与浓相一次风可调喷口相接，在旋流二次风外 套筒内设有旋流二次风叶轮和叶轮调节杆。本实用 新型适应煤质范围广，负荷调整能力大，NOX排放量 低。
The utility model discloses a large-scale, load-variable, dense-phase pulverized coal combustion device, which is sequentially provided with a dense-phase primary air inner sleeve, a dense-phase primary air outer sleeve, a central DC air outer sleeve, a swirl The secondary air separation sleeve, the swirl secondary air outer sleeve, the dense phase primary air inner sleeve is connected with a dense phase primary air conical adjustable helix at one end, and the other end is connected with a rear cover and an adjustment handle. There is an ignition oil gun inside the air inner sleeve. One end of the dense phase primary air outer sleeve is connected with the primary air elbow bifurcated air powder separator, and the other end is connected with the dense phase primary air adjustable nozzle. A swirl secondary air impeller and an impeller adjusting rod are arranged in the secondary air outer sleeve. The utility model is suitable for a wide range of coal quality, has large load adjustment capability and low NOx emission.
Description
The utility model relates to coal powder burner, especially relates to wide range, varying duty, dense dilute phase coal powder burner.
Along with the variation of development and national economy and power structure, the peak-valley difference of power load increases day by day, in addition owing to the raising to environmental requirement, to coal-burning boiler NO
XDischarge standard control strictly more, therefore press for a kind of novel burner that can adapt to above-mentioned situation of development.
The purpose of this utility model provides a kind of wide range, varying duty, low NO
X, dense dilute phase coal powder burner.
Elaborate below in conjunction with accompanying drawing.
Accompanying drawing is wide range, varying duty, dense dilute phase coal powder burner schematic diagram.
Wide range, varying duty, dense dilute phase coal powder burner, it is provided with wind inner sleeve 7 of concentrated phase successively, wind outer sleeve 8 of concentrated phase, middle ring direct current wind outer sleeve 10, swirl secondary air spacer tube 12, swirl secondary air outer sleeve 13, wind inner sleeve one termination of concentrated phase has a wind taper of concentrated phase adjustable spiral body 16, the other end is connected to back cover 6 and regulating handle 5, is provided with torch oil gun in wind inner sleeve of concentrated phase. Wind outer sleeve one end of concentrated phase and a windbend head bifurcated wind powder separator join, wind adjustable orifice 15 of the other end and concentrated phase joins, ring direct current wind inlet 17 in middle ring direct current wind outer sleeve is provided with, at the swirl secondary air outer sleeve by being provided with swirl secondary air impeller 14 and impeller adjusting rod 11, be provided with 18, windbend heads of swirl secondary air import bifurcated wind powder separator at the swirl secondary air outer sleeve and have wind powder import 1, elbow 2, elbow bifurcated 3, wind inlet 4 of dilute phase.
During the work of this burner, primary wind and powder separates the wind powder through a windbend head bifurcated separator. Coal dust amount concentrated phase after the separation is 80～92%, and dilute phase is 8～20%; The air quantity concentrated phase is 35～55%, dilute phase 45～65%; The ratio in an airduct footpath respectively before and after separating For d dense/d is total=0.4～0.7, d is rare/d is total=0.5～0.8 dense dilute phase bifurcated pipe outlet angle is 20～45 °.
Wind of concentrated phase after a windbend head bifurcated separator separates enters the concentrated phase burner.Start-up burner was used when the torch oil gun in wind inner sleeve of concentrated phase burner can be used as boiler ignition start.The band spiral fluted taper enlarging on wind inner sleeve of concentrated phase and the enlarging of the wind adjustable orifice of concentrated phase on the outer sleeve reflux a wind generation of concentrated phase center and coal dust are further concentrated in burner hearth and form high concentration pulverized coal ring-type mist torch; The angle of conical pallidum enlarging is 30～60 °, has helicla flute on spirochetal cone.
Ring direct current wind between wind outer sleeve of concentrated phase and swirl secondary air inner sleeve, being provided with, ring direct current wind is closed when underload in this, so that encircle the recirculating zone in the incorporation time of postponement swirl secondary air and a wind of concentrated phase and the formation, helps catching fire; When high load capacity, open, make burning obtain enough oxygen amounts and the scaling loss that prevents burner.
The adjustable swirl secondary air of outer shroud guarantees that further burner obtains enough capacities of returns under various loads.For turbulent burner, under various loads, remain certain swirl strength; For DC burner, utilize secondary fan blade adjusting rod and spacer, can adjust eddy flow secondary swirl strength by strong extremely weak up to zero, make it to become fully direct current secondary wind.
For solving a wind conical pallidum of concentrated phase wear problem, except that adopting wear-resistant material, this burner design can be in operation and change the cone-type spiral body structure, pull down wind back cover of concentrated phase during replacing, pull out wind inner sleeve of concentrated phase, unload conical pallidum, reinstall again and get final product.
The two spout primary air systems of twin-channel secondary air system and dense dilute phase, the NO that produces in the time of can making coal dust firing
XContent descends significantly.
This burner adapts to the coal dust of various character, but both burning inferior coals can be adjusted load again significantly, and the load adjustment capability is 30～100% of a boiler rated load, and can save ignition oil and stable combustion oil in a large number as ignition of the boiler burner usefulness.
This burner had both adapted to the turbulent burner pulverized-coal fired boiler of front wall or both walls layout, was adapted to four jiaos of DC burner pulverized-coal fired boilers of arranging again.
Claims (3)
1, a kind of wide range varying duty, dense dilute phase coal powder burner, it is characterized in that it is provided with a wind inner sleeve of concentrated phase [7] successively, a wind outer sleeve of concentrated phase [8], middle ring direct current wind outer sleeve [10], swirl secondary air spacer tube [12], swirl secondary air outer sleeve [13], wind inner sleeve one termination of concentrated phase has a wind taper of concentrated phase adjustable spiral body [16], the other end is connected to back cover [6] and regulating handle [5], in wind inner sleeve of concentrated phase, be provided with torch oil gun, wind outer sleeve one end of concentrated phase and a windbend head bifurcated wind powder separator join, a wind adjustable orifice of the other end and concentrated phase [15] joins, ring direct current wind inlet [17] on middle ring direct current wind outer sleeve, being provided with, be provided with swirl secondary air impeller [14] and impeller adjusting rod [11] in the swirl secondary air outer sleeve, be provided with swirl secondary air import [18] on the swirl secondary air outer sleeve, one time windbend head bifurcated wind powder separator has wind powder import [1], elbow [2], elbow bifurcated [3], a wind snout of dilute phase [4].
2, the dense dilute phase coal powder burner of a kind of wide range varying duty according to claim 1, it is characterized in that a said windbend head bifurcated wind powder separator, the ratio in an airduct footpath was respectively before and after it separated: and d is dense/d is total=0.4-0.7d is rare/and d is total=and 0.5～0.8, it is 20～45 ° that dense dilute phase bifurcated pipe exports angle.
3, the dense dilute phase coal powder burner of a kind of wide range varying duty according to claim 1 and 2, the enlarging that it is characterized in that said taper adjustable spiral body is 20～60 °, has helicla flute on its cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92226003 CN2126893Y (en) | 1992-06-23 | 1992-06-23 | Large range, variable load, dense and dilute phase pulverized coal combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92226003 CN2126893Y (en) | 1992-06-23 | 1992-06-23 | Large range, variable load, dense and dilute phase pulverized coal combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2126893Y true CN2126893Y (en) | 1993-02-10 |
Family
ID=33770460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92226003 Expired - Fee Related CN2126893Y (en) | 1992-06-23 | 1992-06-23 | Large range, variable load, dense and dilute phase pulverized coal combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2126893Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095971C (en) * | 1996-11-12 | 2002-12-11 | 孙键 | Radial cyclone-type coal burner |
| CN101642656B (en) * | 2009-06-09 | 2011-07-20 | 徐州燃控科技股份有限公司 | Dense-and-weak separator of online regulable ring-shaped shutter |
| CN102454985A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and pulverized coal boiler |
| CN102454983A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Pulverized coal concentrator, pulverized coal burner and pulverized coal boiler |
-
1992
- 1992-06-23 CN CN 92226003 patent/CN2126893Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095971C (en) * | 1996-11-12 | 2002-12-11 | 孙键 | Radial cyclone-type coal burner |
| CN101642656B (en) * | 2009-06-09 | 2011-07-20 | 徐州燃控科技股份有限公司 | Dense-and-weak separator of online regulable ring-shaped shutter |
| CN102454985A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and pulverized coal boiler |
| CN102454983A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Pulverized coal concentrator, pulverized coal burner and pulverized coal boiler |
| CN102454985B (en) * | 2010-11-01 | 2015-04-08 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and pulverized coal boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |