CN105953225A - Pulverized coal burner - Google Patents
Pulverized coal burner Download PDFInfo
- Publication number
- CN105953225A CN105953225A CN201610461330.XA CN201610461330A CN105953225A CN 105953225 A CN105953225 A CN 105953225A CN 201610461330 A CN201610461330 A CN 201610461330A CN 105953225 A CN105953225 A CN 105953225A
- Authority
- CN
- China
- Prior art keywords
- air channel
- cone
- coal burner
- forms
- primary air
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 239000011449 brick Substances 0.000 abstract description 10
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- 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 invention discloses a pulverized coal burner comprising an outer barrel. The end portion of the outer barrel is sequentially provided with an outwards-expanding cone, an outer straight barrel and an outwards-shrinking cone to form a burning cavity; the outer barrel is sequentially provided with a center pipe, a primary air pipe, a first inwards-expanding cone and an outer barrel wall from the center to the outside; an ignition pipe is arranged in the center pipe; a channel defined by the center pipe and the ignition pipe forms a center air duct; a channel defined by the center pipe and the primary air pipe forms a primary air channel; a channel defined by a combined body formed by connecting an inwards-shrinking cone, an inner straight barrel and a second inwards-expanding cone, and the primary air pipe forms a secondary cyclone air duct; a channel defined by the first inwards-expanding cone and the outer wall of the outer barrel forms a secondary direct flow air duct. Compared with the prior art, when the pulverized coal burner is used, coal is burned sufficiently, and the input cost is saved; and the size is small, no refractory bricks are used, and the service life of the burner is prolonged.
Description
Technical field
The present invention relates to drying technology field of burning, be specifically related to a kind of coal burner.
Background technology
At present, China is substantially made up of bocca, cylinder, bonnet, air distribution coal supply assembly, igniter and PLC controller at the coal burner used by road building business.Find that this powdered coal burner has the disadvantage in that the refractory brick rapid wear at bocca through life-time service, it is primarily due to producer to make the thermal energy of generation concentrate, maximize the heating load of powdered coal burner, bocca all forms cone mouth shape with refractory brick, make to jet out flames contraction by cone mouth thus realize receipts fire, but red-hot flame flow directly washes away refractory brick, refractory brick is impaired quickly, i.e. need to change the refractory brick at a bocca in the time of 3-6 month, add use cost；Combustion Efficiency of Coal Powder is the highest, and the furnace air distribution passage being primarily due on bonnet uses the mode air distribution of directly blowing, and air distribution is the strongest to the parcel of coal dust, the mobility of air distribution is more weak, making coal dust poor fluidity in burner hearth, coal dust tends not to the most fully burn, and adds production cost.
Summary of the invention
For solving drawbacks described above, it is an object of the invention to provide a kind of coal burner, coal dust channel and wind passage mixed design reasonable, not only little being easy to of volume is moved, and flame is long, and burning of coal efficiency is higher.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of coal burner, and including outer cylinder body, described outer cylinder body end extends out cone, outer straight barrel and external contracting cone by being sequentially provided with and forms combustion chamber；Described outer cylinder body is outwards sequentially provided with reamer body in central canal, primary air piping and first from center, is provided with ignitron inside described central canal, and the passage that described central canal and described ignitron surround forms air channel, center；The passage that described central canal and described primary air piping surround forms First air passage, described First air channel interior is sequentially provided with the first Wen Yan mechanism, deflector from front to back and concentrates mechanism, described first Wen Yan mechanism includes multiple oblique cone, described deflector includes that some first helical blades, described concentration mechanism include some conical rings；Be respectively equipped with between reamer body in described primary air piping and described first be sequentially connected with inside contract reamer body in cone, interior straight barrel and second, described in inside contract the passage that assembly that reamer body in cone, interior straight barrel and second is formed by connecting and described primary air piping surround and form swirl flow air channel；The passage that in described first, reamer body and described outer cylinder body outer wall surround forms secondary direct current air channel；Front end, described secondary direct current air channel forms outer direct current air channel by being provided with some straight plates；Vertebral body is expanded in being additionally provided with the 3rd in described outer cylinder body end, expand in described 3rd vertebral body close off expand in the end of reamer body, and the described 3rd in reamer body and described second in described first vertebral body, reamer body in described first, in described second reamer body and described in inside contract and be respectively equipped with some cavities on vertebral body and form the second Wen Yan mechanism.
Preferably, the front end of described central canal and described ignitron is provided with multiple tracks baffle plate, and air channel, described center forms direct current centre wind by described baffle plate.
Described primary air piping end is additionally provided with and reamer body in axially become 10-30 ° the 4th inside described swirl flow air channel, expands conical surface and offer multiple honeycomb mouth in the described 4th.
Described swirl flow air channel forms spiral type air channel by adding some second helical blades.
Described first helical blade is arranged on described primary air piping inwall or described central canal outer wall.
Described oblique cone is wedge shaped or petal.
Described extend out cone with axially in 15-30 °.
Described external contracting vertebral body with axially in 30-60 °.
The present invention in use, the secondary wind provided by blower fan by described outer cylinder body outer wall radially into, described first in, expansion vertebral body and the described cone joint that inside contracts are divided into direct current air channel and swirl air duct；After the oil gun of described central canal is ignited, the coal dust flowed out in the primary air piping that ignites, the abundant precombustion in combustion chamber with secondary direct current wind and swirl flow wind, a part of flame ejection combustion chamber forms continuous print combustion process.
Compared with prior art, present configuration is simple, reasonable in design, changes traditional coal wind mixed organization, changes into by secondary direct current wind and swirl flow wind precombustion pattern in combustion chamber, and this kind of pattern coal combustion is abundant, and flame is long, saves input cost；And volume is little, do not use refractory brick, overcome the difficult problem needing often to change refractory brick, alleviate the labor intensity of workman, improve the service life of burner.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment, structure and feature to the present invention are further described.
Fig. 1 is the structural representation of the present invention.
In accompanying drawing 1,1. central canal, 2. ignitron, 3. conical ring, 4. primary air piping, 5. outer cylinder body, 6. the first helical blade, 7. expand vertebral body in first, 8. inside contract vertebral body, 9. in straight barrel, 10. the second helical blade, 11. oblique cones, expand vertebral body in 12. second, expand vertebral body, 14. straight plates in 13. the 4th, in 15. the 3rd, expand vertebral body, 16. extend out vertebral body, 17. outer straight barrels, 18. external contracting vertebral bodys.
Detailed description of the invention
Referring to accompanying drawing 1, a kind of coal burner, including outer cylinder body 5, described outer cylinder body 5 end extends out cone 16, outer straight barrel 17 and external contracting cone 18 by being sequentially provided with and forms combustion chamber；Described outer cylinder body 5 is outwards sequentially provided with reamer body 7 in central canal 1, primary air piping 4 and first from center, and described central canal 1 is internal is provided with ignitron 2, and the passage that described central canal 1 and described ignitron 2 surround forms air channel, center；The passage that described central canal 1 and described primary air piping 4 surround forms First air passage, described First air channel interior is sequentially provided with the first Wen Yan mechanism, deflector from front to back and concentrates mechanism, described first Wen Yan mechanism includes multiple oblique cone 11, described deflector includes that some first helical blades 6, described concentration mechanism include some conical rings 3；Be respectively equipped with between reamer body 7 in described primary air piping 4 and described first be sequentially connected with inside contract reamer body 12 in cone 8, interior straight barrel 9 and second, described in inside contract the passage that assembly that reamer body 12 in cone 8, interior straight barrel 9 and second is formed by connecting and described primary air piping 4 surround and form swirl flow air channel；The passage that in described first, reamer body 7 and described outer cylinder body 5 outer wall surround forms secondary direct current air channel；Front end, described secondary direct current air channel forms outer direct current air channel by being provided with some straight plates 14；Vertebral body 15 is expanded in being additionally provided with the 3rd in described outer cylinder body 5 end, expand in described 3rd vertebral body 15 close off expand described in vertebral body 15 first in described first in reamer body 7 and described second in the end of reamer body 12, and the described 3rd in reamer body 7, in described second reamer body 12 and described in inside contract and be respectively equipped with some cavities on vertebral body 8 and form the second Wen Yan mechanism.
Preferably, the front end of described central canal 1 and described ignitron 2 is provided with multiple tracks baffle plate, and air channel, described center forms direct current centre wind by described baffle plate.
Described primary air piping 4 end is additionally provided with and reamer body 13 in axially become 10-30 ° the 4th inside described swirl flow air channel, expands vertebral body 13 surface and offer multiple honeycomb mouth in the described 4th.
Described swirl flow air channel forms spiral type air channel by adding some second helical blades 10.
Described first helical blade 6 is arranged on described primary air piping 4 inwall or described central canal 1 outer wall.
Described oblique cone 11 is wedge shaped or petal.
Described extend out cone 16 with axially in 15-30 °.
Described external contracting vertebral body 18 with axially in 30-60 °.
The present invention in use, the secondary wind provided by blower fan by described outer cylinder body outer wall radially into, described first in, expansion vertebral body 7 and described cone 8 joint that inside contracts are divided into direct current air channel and swirl air duct；After the oil gun of described central canal is ignited, the coal dust flowed out in the primary air piping that ignites, the abundant precombustion in combustion chamber with secondary direct current wind and swirl flow wind, a part of flame ejection combustion chamber forms continuous print combustion process.
Present configuration is simple, reasonable in design, changes traditional coal wind mixed organization, changes into by secondary direct current wind and swirl flow wind precombustion pattern in combustion chamber, and this kind of pattern coal combustion is abundant, and flame is long, saves input cost；And volume is little, do not use refractory brick, overcome the difficult problem needing often to change refractory brick, alleviate the labor intensity of workman, improve the service life of burner.
Described above is only presently preferred embodiments of the present invention, and above-mentioned specific embodiment is not limitation of the present invention, and retouching, amendment or the equivalent that all those of ordinary skill in the art are made as described above belongs to protection scope of the present invention.
Claims (8)
1. a coal burner, including outer cylinder body, it is characterised in that: described outer cylinder body end extends out cone, outer straight barrel and external contracting cone by being sequentially provided with and forms combustion chamber；Described outer cylinder body is outwards sequentially provided with reamer body in central canal, primary air piping and first from center, is provided with ignitron inside described central canal, and the passage that described central canal and described ignitron surround forms air channel, center；Passage that described central canal and described primary air piping surround forms First air passage, and described First air channel interior is sequentially provided with from front to back and includes the first Wen Yan mechanism of multiple oblique cone, include the deflector of some first helical blades and include the concentration mechanism of some conical rings；Be respectively equipped with between reamer body in described primary air piping and described first be sequentially connected with inside contract reamer body in cone, interior straight barrel and second, described in inside contract the passage that assembly that reamer body in cone, interior straight barrel and second is formed by connecting and described primary air piping surround and form swirl flow air channel；The passage that in described first, reamer body and described outer cylinder body outer wall surround forms secondary direct current air channel；Front end, described secondary direct current air channel forms outer direct current air channel by being provided with some straight plates；Vertebral body is expanded in being additionally provided with the 3rd in described outer cylinder body end, expand in described 3rd vertebral body close off expand in the end of reamer body, and the described 3rd in reamer body and described second in described first vertebral body, reamer body in described first, in described second reamer body and described in inside contract and be respectively equipped with some cavities on vertebral body and form the second Wen Yan mechanism.
Coal burner the most according to claim 1, it is characterised in that: the front end of described central canal and described ignitron is provided with multiple tracks baffle plate, and air channel, described center forms direct current centre wind by described baffle plate.
Coal burner the most according to claim 1, it is characterised in that: described primary air piping end is additionally provided with and reamer body in axially become 10-30 ° the 4th inside described swirl flow air channel, expands conical surface and offer multiple honeycomb mouth in the described 4th.
Coal burner the most according to claim 1, it is characterised in that: described swirl flow air channel forms spiral type air channel by adding some second helical blades.
Coal burner the most according to claim 1, it is characterised in that: described first helical blade is arranged on described primary air piping inwall or described central canal outer wall.
Coal burner the most according to claim 1, it is characterised in that: described oblique cone is wedge shaped or petal.
Coal burner the most according to claim 1, it is characterised in that extend out cone described in: and axially become 15-30 °.
Coal burner the most according to claim 1, it is characterised in that: described external contracting vertebral body with axially become 30-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461330.XA CN105953225B (en) | 2016-06-23 | 2016-06-23 | Pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461330.XA CN105953225B (en) | 2016-06-23 | 2016-06-23 | Pulverized coal burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105953225A true CN105953225A (en) | 2016-09-21 |
| CN105953225B CN105953225B (en) | 2023-12-22 |
Family
ID=56903631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610461330.XA Active CN105953225B (en) | 2016-06-23 | 2016-06-23 | Pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105953225B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838896A (en) * | 2017-04-01 | 2017-06-13 | 郑州鼎然环保科技有限公司 | A kind of dore furnace single channel burner |
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439842A (en) * | 2003-02-28 | 2003-09-03 | 哈尔滨工业大学 | Central coal feed cyclone coal burner |
| US20070281265A1 (en) * | 2006-06-01 | 2007-12-06 | Hamid Sarv | Large diameter mid-zone air separation cone for expanding IRZ |
| JP2010249362A (en) * | 2009-04-13 | 2010-11-04 | Ihi Corp | Burner |
| CN102032567A (en) * | 2009-09-27 | 2011-04-27 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and boiler with pulverized coal burner |
| CN201935184U (en) * | 2011-01-13 | 2011-08-17 | 朱洪模 | Stable-combustion environment-friendly cyclone pulverized coal burner |
| CN102261652A (en) * | 2011-08-10 | 2011-11-30 | 大连经济技术开发区水国燃烧器有限公司 | Petal burner |
| US20130112120A1 (en) * | 2011-05-27 | 2013-05-09 | Yuehua Li | Dense Phase Swirl Pulverized Coal Burner |
| CN103162289A (en) * | 2013-03-11 | 2013-06-19 | 扬州晨光特种设备有限公司 | Rotational flow stopping block type pulverized coal concentrator |
| CN206001454U (en) * | 2016-06-23 | 2017-03-08 | 王鹏钊 | A kind of coal burner |
-
2016
- 2016-06-23 CN CN201610461330.XA patent/CN105953225B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439842A (en) * | 2003-02-28 | 2003-09-03 | 哈尔滨工业大学 | Central coal feed cyclone coal burner |
| US20070281265A1 (en) * | 2006-06-01 | 2007-12-06 | Hamid Sarv | Large diameter mid-zone air separation cone for expanding IRZ |
| JP2010249362A (en) * | 2009-04-13 | 2010-11-04 | Ihi Corp | Burner |
| CN102032567A (en) * | 2009-09-27 | 2011-04-27 | 烟台龙源电力技术股份有限公司 | Pulverized coal burner and boiler with pulverized coal burner |
| CN201935184U (en) * | 2011-01-13 | 2011-08-17 | 朱洪模 | Stable-combustion environment-friendly cyclone pulverized coal burner |
| US20130112120A1 (en) * | 2011-05-27 | 2013-05-09 | Yuehua Li | Dense Phase Swirl Pulverized Coal Burner |
| CN102261652A (en) * | 2011-08-10 | 2011-11-30 | 大连经济技术开发区水国燃烧器有限公司 | Petal burner |
| CN103162289A (en) * | 2013-03-11 | 2013-06-19 | 扬州晨光特种设备有限公司 | Rotational flow stopping block type pulverized coal concentrator |
| CN206001454U (en) * | 2016-06-23 | 2017-03-08 | 王鹏钊 | A kind of coal burner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838896A (en) * | 2017-04-01 | 2017-06-13 | 郑州鼎然环保科技有限公司 | A kind of dore furnace single channel burner |
| CN111023148A (en) * | 2020-01-14 | 2020-04-17 | 薛芳 | Adjustable spiral multi-stage oil-free coal powder igniter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105953225B (en) | 2023-12-22 |
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