CN201448834U - A swirl pulverized coal burner - Google Patents
A swirl pulverized coal burner Download PDFInfo
- Publication number
- CN201448834U CN201448834U CN2009200479580U CN200920047958U CN201448834U CN 201448834 U CN201448834 U CN 201448834U CN 2009200479580 U CN2009200479580 U CN 2009200479580U CN 200920047958 U CN200920047958 U CN 200920047958U CN 201448834 U CN201448834 U CN 201448834U
- Authority
- CN
- China
- Prior art keywords
- pulverized coal
- burner
- pipe
- oil gun
- horizontal
- 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 33
- 239000002817 coal dust Substances 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
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
本实用新型公开了一种旋流煤粉燃烧器，它是由一次风弯管、煤粉均流板、油枪套管所组成。在一次风弯管进口端中心设置有煤粉均流板，水平进口端设有煤粉浓缩锲型块，使进口煤粉在水平段进口向中心浓缩整流，在水平出口端设置有外扩形套筒，中心设置有油枪套管，油枪套管右端炉膛中设置有煤粉浓缩器。通过外扩形套筒和煤粉浓缩器，使煤粉在气流惯性作用下，在燃烧器出口形成外浓内淡的煤粉气流，并通过炉膛侧外扩喷口和燃烧器外围直流二次风、旋流二次风配合，形成高温回流区，达到快速点火，高效燃烧及低氮氧化物的排放的目的，本实用新型结构简单，增强了燃烧器的耐磨性能，延长了使用寿命。
The utility model discloses a swirling pulverized coal burner, which is composed of a primary air elbow, a pulverized coal equalizing plate and an oil gun casing. There is a pulverized coal equalizing plate at the center of the inlet end of the primary air elbow, and a pulverized coal concentration wedge block at the horizontal inlet end, so that the imported pulverized coal is concentrated and rectified toward the center at the inlet of the horizontal section, and an external expansion is provided at the horizontal outlet end The sleeve is provided with an oil gun casing in the center, and a pulverized coal concentrator is arranged in the furnace at the right end of the oil gun casing. Through the outer expansion sleeve and the pulverized coal concentrator, the pulverized coal forms a pulverized coal airflow at the outlet of the burner under the action of the inertia of the airflow, and passes through the expansion nozzle on the side of the furnace and the secondary air flow around the burner. , Swirling secondary air cooperates to form a high-temperature recirculation zone to achieve rapid ignition, high-efficiency combustion and low nitrogen oxide emissions. The utility model has a simple structure, enhances the wear resistance of the burner, and prolongs the service life.
Description
Technical field: the utility model relates to a kind of burner, relates in particular to a kind of vortex burner.
Background technology: adopt the construction of the external big capacity that manufactures and designs of introducing technology, high parameter supercritical generating unit and put into operation along with a large amount of in recent years, alleviated the situation of China's last stage power supply shortage effectively, and accelerated that China's electric utility is marched toward efficiently, the paces of the green unit of energy-saving and environmental protection.
Yet, along with China's electric power in short supply day by day with coal supply, boiler is actual to use coal and design coal often greatly differs from each other, the after-flame performance of catching fire of coal dust descends, polishing machine strengthens, and has not only aggravated the wearing and tearing in air channel of burner, and makes the catching fire of boiler, surely combustion ability not reach designing requirement, speed of ignition is slow, and NOX discharges high.So not only can have a strong impact on the performance and the efficient of boiler, and will shorten the time between overhauls(TBO) of power plant, increase the cost of operation, the economy of influence operation.
Therefore, the advanced technology and the changeable present situation of domestic power plant coal quality of introduction are combined, continue to optimize and invent the burner product that is more suitable for domestic difficult point fire, difficult steady combustion and ature of coal easy to wear, become each cauldron producer and power plant's exigence, had the social effect and the practical value of reality.
Summary of the invention: the purpose of this utility model will provide a kind of vortex burner exactly, and it can solve the big technical problem of existing in prior technology burner wearing and tearing well.The purpose of this utility model is to realize like this, a kind of vortex burner, formed by windbend pipe, coal dust homogenizing plate, an oil gun sleeve pipe, it is characterized in that: the entrance point centre in windbend pipe is provided with the coal dust homogenizing plate, the horizontal inlet end is provided with Pulverized Coal Concentration and carves the type piece, the Horizontal Exit end is provided with and extends out the shape sleeve, enlarging angle α is 10-20 °, the center is provided with the oil gun sleeve pipe, the right-hand member of oil gun sleeve pipe is provided with pulverized coal concentrator, and described pulverized coal concentrator is the thin taper broad in the middle in two; Burner burner hearth side is provided with and extends out spout; One time the airduct outer periphery is equipped with direct current secondary air duct and regulating device of air door, radially is provided with blade swirl secondary air road.The utlity model has rational in infrastructurely, easy to use, speed of ignition fires soon, surely that ability is strong, the characteristics of NOX low emission.After in windbend pipe of burner, being provided with homogenizing plate, make the coal dust that enters a windbend pipe be divided into two parts up and down, reduced coal dust acts on a windbend inside pipe wall owing to inertia coal dust amount, air channel inner structure of burner is simple simultaneously, resistance is little, and abrasion resistance properties strengthens greatly.
Description of drawings:
Fig. 1 is the utility model structural representation;
1. windbend pipe, 2. coal dust homogenizing plate, 3. Pulverized Coal Concentration is carved the type piece, 4. straight tube, 5. pulverized coal concentrator 6. extends out spout, 7. direct current secondary air duct, 8. swirl secondary air road, 9. the oil gun sleeve pipe 10. extends out the shape sleeve, 11. regulating device of air door.
The specific embodiment: the utility model is described in further detail below in conjunction with accompanying drawing;
A kind of vortex burner, formed by windbend pipe 1, coal dust homogenizing plate 2, an oil gun sleeve pipe 9, it is characterized in that: the entrance point centre in windbend pipe 1 is provided with coal dust homogenizing plate 2, the horizontal inlet end is provided with Pulverized Coal Concentration and carves type piece 3, the Horizontal Exit end is provided with and extends out shape sleeve 10, and enlarging angle α is 10-20 °, and the center is provided with oil gun sleeve pipe 9, the right-hand member of oil gun sleeve pipe is provided with pulverized coal concentrator 5, and described pulverized coal concentrator 5 is the thin taper broad in the middle in two; Burner burner hearth side is provided with and extends out spout 6; An airduct outer periphery is equipped with the secondary air duct 7 and the regulating device of air door 11 of direct current, radially is provided with blade swirl secondary air road 8.
Be provided with the coal dust homogenizing plate in 1: windbend pipe of embodiment, because the effect of homogenizing plate, two parts entered bend pipe about coal dust divided, and had reduced the wearing and tearing to bend pipe top, made coal dust be easier to concentrate on windbend pipe horizontal segment center one time simultaneously; Be provided with the oil gun sleeve pipe at the burner center, oil gun sleeve pipe right-hand member is provided with pulverized coal concentrator in burner hearth, be provided with Pulverized Coal Concentration at a windbend pipe horizontal inlet end and carve the type piece, because coal dust concentrates on top herein, so this wedge type block can or only be arranged and go up half-turn, make the import coal dust concentrate rectification in the horizontal segment import to the bend pipe center for a circle; A windbend pipe is provided with at the Horizontal Exit end and extends out the shape sleeve, cooperate by the thin pulverized coal concentrator broad in the middle of sleeve and two, make breeze airflow under effect of inertia outside burner outlet forms dense in light breeze airflow, and extend out the peripheral secondary wind of spout and burner by the burner hearth side and cooperate, form the high temperature gases recirculating district in the thick coal culm zone, help the igniting and the steady combustion of coal dust.
Embodiment 2: be by a windbend pipe, one time the windbend pipe port of export extends out sleeve, and the burner hearth side extends out spout, pulverized coal concentrator, and the direct current secondary air duct of a windbend pipe periphery and swirl secondary air road, also comprise the regulating device of air door composition of regulating direct current secondary air duct import air quantity.The spout of wind, direct current secondary wind, swirl secondary air is and extends out shape, because the enlarging of secondary wind is towards burner hearth, air-flow sprays after entering burner hearth to the periphery, delayed the incorporation time of primary and secondary air, make the dense breeze airflow in the outside, an air channel of burner after catching fire fast under the effect of high temperature gases recirculating district, moment consumes a large amount of oxygen, form reductant at spout, thereby the nitrogen oxide that a large amount of early stage volatile combustions are generated is reduced, later stage makes coal dust can replenish sufficient oxygen amount after-flame by mixing with the in good time of secondary wind.And can pass through the air quantity regulating action of direct current secondary wind, regulating device of air door, reach the incorporation time of adjusting outer eddy flow wind and a wind.
The utility model mainly is applicable to the burner of big-and-middle-sized coal-burning boiler.Wherein the parameters such as angle of the two sides enlarging of the flaring angle of spout, pulverized coal concentrator all can change, and can adjust accordingly different coals and operating mode.
Claims (6)
1. vortex burner, formed by a windbend pipe (1), coal dust homogenizing plate (2), oil gun sleeve pipe (9), it is characterized in that: the entrance point centre in a windbend pipe (1) is provided with coal dust homogenizing plate (2), the horizontal inlet end is provided with Pulverized Coal Concentration and carves type piece (3), the Horizontal Exit end is provided with and extends out shape sleeve (10), the center is provided with oil gun sleeve pipe (9), and the right-hand member of oil gun sleeve pipe (9) is provided with pulverized coal concentrator (5); Burner burner hearth side is provided with and extends out spout (6); A windbend pipe (1) outer periphery is equipped with direct current secondary wind (7) and regulating device of air door (11), radially is provided with blade swirl secondary air (8).
2. a kind of vortex burner according to claim 1 is characterized in that: the Pulverized Coal Concentration that is positioned at a windbend pipe (1) horizontal ends import setting is carved type piece (3) to be a whole circle or to have only last half-turn.
3. a kind of vortex burner according to claim 1 is characterized in that: what be positioned at a windbend pipe (1) horizontal ends outlet setting extends out sleeve (10) for mouth is towards the burner hearth side greatly, and enlarging angle α is 10-20 °.
4. a kind of vortex burner according to claim 1 is characterized in that: one time wind, direct current secondary wind (7) and swirl secondary air (8) spout are and extend out shape, and enlarging is towards burner hearth.
5. a kind of vortex burner according to claim 1 is characterized in that: direct current secondary wind (7) is regulated import air quantity size by regulating device of air door (11).
6. a kind of vortex burner according to claim 1 is characterized in that: pulverized coal concentrator (5) is the thin taper shape broad in the middle in two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200479580U CN201448834U (en) | 2009-08-24 | 2009-08-24 | A swirl pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200479580U CN201448834U (en) | 2009-08-24 | 2009-08-24 | A swirl pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448834U true CN201448834U (en) | 2010-05-05 |
Family
ID=42553555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200479580U Expired - Fee Related CN201448834U (en) | 2009-08-24 | 2009-08-24 | A swirl pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448834U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915420A (en) * | 2010-05-19 | 2010-12-15 | 上海题桥能源科技发展有限公司 | Low-NOx dry and wet deslagging dual-swirl coal-dust combustion device for |
| CN102338376A (en) * | 2010-07-23 | 2012-02-01 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner |
| CN102393015A (en) * | 2011-05-27 | 2012-03-28 | 上海锅炉厂有限公司 | Dense-phase spiral-flow pulverized-coal burner |
-
2009
- 2009-08-24 CN CN2009200479580U patent/CN201448834U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915420A (en) * | 2010-05-19 | 2010-12-15 | 上海题桥能源科技发展有限公司 | Low-NOx dry and wet deslagging dual-swirl coal-dust combustion device for |
| CN102338376A (en) * | 2010-07-23 | 2012-02-01 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner |
| CN102338376B (en) * | 2010-07-23 | 2015-07-29 | 烟台龙源电力技术股份有限公司 | A kind of coal burner |
| CN102393015A (en) * | 2011-05-27 | 2012-03-28 | 上海锅炉厂有限公司 | Dense-phase spiral-flow pulverized-coal burner |
| WO2012163107A1 (en) * | 2011-05-27 | 2012-12-06 | 上海锅炉厂有限公司 | Dense-phase swirl pulverized coal burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20120824 |