CN101294705A - Highly effective internal combustion type pulverized coal burner with ignition source - Google Patents
Highly effective internal combustion type pulverized coal burner with ignition source Download PDFInfo
- Publication number
- CN101294705A CN101294705A CNA2007100975035A CN200710097503A CN101294705A CN 101294705 A CN101294705 A CN 101294705A CN A2007100975035 A CNA2007100975035 A CN A2007100975035A CN 200710097503 A CN200710097503 A CN 200710097503A CN 101294705 A CN101294705 A CN 101294705A
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- Prior art keywords
- pulverized coal
- steady flame
- internal combustion
- combustion type
- coal burner
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- 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.)
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- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 title claims description 19
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000002817 coal dust Substances 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
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Abstract
The invention discloses an efficient internal-combustion-type pulverized coal burner with an ignition source, which includes an outer tube, inner sleeves of all levels, a central tube and a supporting block. The central tubes in the inner sleeves and the inner sleeves of all levels are concentrically arranged, the sections become large level by level and are connected by the supporting block. The pulverized coal burner is characterized in that gibbous flame stabilizing blocks are arranged in the central tube, the inner sleeves of all levels and the outer tube. The device can strengthen air agitation, improve turbulent motion to strengthen burning, at the same time provide coal dust with high concentration for the ignition source, and create the condition of high concentration for igniting the pulverized coal in the central tube; the flame stabilizing blocks in the inner sleeves of all levels and the outer tube can create the condition for each level ignition and play the role of cooling the inner layer tube wall and preventing slag-bonding.
Description
Technical field
The present invention relates to pulverized coal combustion, be specifically related to a kind of steady flame piece of coal burner of the internal combustion type that is used to have incendiary source.
Background technology
Traditional industry coal-burning boiler ignition trigger and low-load combustion-stabilizing are to rely on to be installed on the oil inflame that near the oil burner the burner sprays into and to come firing coal-dust.Can address the above problem though be used for the coal burner of conventional fuel-economizing, have the bigger problem of igniting initial stage combustible loss, the inadequate shortcoming of burner internal combustion.
Summary of the invention
The purpose of this invention is to provide a kind of internal combustion type pulverized coal burner that efficiently has incendiary source, be intended to overcome the technical deficiency of traditional Plasma powdered-coal burner to elementary firing coal-dust and multistage steady combustion existence, use this device simultaneously and make burner wide, flameholding the accommodation of coal, wind speed, wind-warm syndrome.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of internal combustion type pulverized coal burner that efficiently has incendiary source, the steady flame piece of one group of convex is laid at the interval in burner tube, and described steady flame piece is provided with on a place or sectional position, many places, constitutes single-stage or multilevel hierarchy.
Aforesaid a kind of internal combustion type pulverized coal burner that efficiently has incendiary source, the burner cylindrical shell comprises urceolus, inner sleeve at different levels, central tube and back-up block; Central tube and inner sleeve at different levels are placed with one heart in its inner sleeve, and amplify step by step in the cross section, and connect with back-up block; Be laid with the steady flame piece of convex in central tube, inner sleeve at different levels and urceolus inside.
Aforesaid a kind of internal combustion type pulverized coal burner that efficiently has incendiary source, on the barrel that is positioned at same cross section of the uniform or non-uniform centering tube in steady flame block gap, inner sleeve at different levels and urceolus inside, above-mentioned arrangement is multistage or single-stage.
Aforesaid a kind of internal combustion type pulverized coal burner that efficiently has incendiary source, the windward side that is shaped as of steady flame piece is plane or curved surface, lee face be shaped as plane or curved surface, described windward side or lee face and each barrel meets at right angles or acute angle.
Aforesaid a kind of internal combustion type pulverized coal burner that efficiently has incendiary source, steady flame piece is disposed in the exit of this grade sleeve or is arranged in inside.
Compared with the prior art the present invention has following good effect:
1, the interior steady flame piece of central tube has been strengthened the disturbance of air, improves the overheavy firing of turbulence degree, and the coal dust of high concentration is provided for incendiary source simultaneously, for the coal dust of lighting central tube is created superior condition;
2, the steady flame piece in inner sleeves at different levels and the urceolus has been strengthened the disturbance of air, improves the overheavy firing of turbulence degree, creates conditions for this grade igniting simultaneously, plays the effect of cooling inner layer tube wall again, also prevents slagging scorification;
Description of drawings
Fig. 1 is the coal burner structural representation that is provided with the uniform steady flame piece of single-stage of the present invention.
Fig. 2 is the structural representation in the cylindrical shell cross section, steady flame piece place of Fig. 1.
Fig. 3 is the coal burner structural representation that is provided with multistage uniform steady flame piece of the present invention.
Fig. 4 is the steady flame block structure schematic diagram of square-section.
Fig. 5 is the steady flame block structure schematic diagram of trapezoid cross section.
Fig. 6 is the steady flame block structure schematic diagram in curved surface cross section.
The specific embodiment
Understand and the enforcement this patent for better, provide specific embodiment below in conjunction with accompanying drawing and describe the steady flame piece that originally is used for coal burner in detail.
Embodiment 1, as shown in Figure 1.Fig. 1 is a kind of project organization that is used for the steady flame piece of coal burner, adopts heat resisting steel to make inner sleeves 3 at different levels and central tube 5, adopts high-abrasive materials such as abrasion-resistant stee or pottery to make steady flame piece 6.Central tube and inner sleeve at different levels are placed with one heart in its inner sleeve, and amplify step by step in the cross section, connect with back-up block 2 therebetween.The shape of central tube, inner sleeve at different levels, Outer Tube and interior conduit can be that circle also can be other shape.Steady flame piece can be continuous layout and also can be arranged at interval in the tubes at different levels, as is arranged in the position of same cross section.Steady flame piece is disposed in the exit of this grade sleeve or is arranged in inside among the figure.
Fig. 2 is the structural representation in cylindrical shell cross section, steady flame piece place, steady flame piece be uniformly at intervals with tube in.
In embodiment 1, what light at first is the dense side coal dust that enters after the deep or light separation of deep or light of process of central tube, then lights the dense side coal dust after the deep or light separation that enters the steady flame piece of process between central tube and the low one-level inner sleeve, lights step by step, amplify step by step, coal dust is fully burnt.Reduce combustible loss, improve efficiency of combustion, reduce NOx content.Under the effect of steady flame piece, have the air overheavy firing of strong turbulence degree behind the coal dust in incendiary source is lighted inner sleeve, improve efficiency of combustion.For subordinate's ignition provides sufficient energy.
The quantity of steady flame piece can be selected by calculating, and the planform of steady flame piece can be various.
The multistage uniform steady flame piece that is used for coal burner of embodiment 2 is seen Fig. 3.Fig. 3 is the steady flame block structure of the coal burner of secondary layout.The arrangement form of front and back stages can be the same or different, and the quantity of layout can be the same or different.The structure of steady flame piece can be the same or different.Wherein one-level is arranged in the outlet of sleeve.
Fig. 4 to Fig. 6 is the structural representation of steady flame piece, and they are respectively the steady flame block structures in rectangle, trapezoidal and curved surface cross section.As seen from the figure, the windward side of steady flame piece can be designed to plane or curved surface, and the shape of lee face also can be designed to plane or curved surface.The shape of described windward side or lee face reaches with the disturbance of the formed angle of each barrel by air to be needed to be provided with.
Sequence number is described as follows among the figure:
The 1-incendiary source; The 2-back-up block; The 3-inner sleeve; The 4-urceolus; The 5-central tube; The steady flame piece of 6-.
Claims (5)
1, a kind of internal combustion type pulverized coal burner that efficiently has incendiary source is characterized in that: lay the steady flame piece of one group of convex in burner tube at interval, described steady flame piece is provided with on a place or plurality of positions, constitutes single-stage or multilevel hierarchy.
2, a kind of internal combustion type pulverized coal burner that efficiently has incendiary source as claimed in claim 1, it is characterized in that: the burner cylindrical shell comprises urceolus, inner sleeve at different levels, central tube and back-up block; Central tube and inner sleeve at different levels are placed with one heart in its inner sleeve, and amplify step by step in the cross section, and connect with back-up block; Be laid with the steady flame piece of convex in central tube, inner sleeve at different levels and urceolus inside.
3, a kind of internal combustion type pulverized coal burner that efficiently has incendiary source as claimed in claim 2, it is characterized in that: on the barrel that is positioned at same cross section of the uniform or non-uniform centering tube in steady flame block gap, inner sleeve at different levels and urceolus inside, above-mentioned arrangement is multistage or single-stage.
4, as claim 1,2 or 3 described a kind of internal combustion type pulverized coal burners that efficiently have incendiary source, it is characterized in that: the windward side that is shaped as of steady flame piece is plane or curved surface, lee face be shaped as plane or curved surface, described windward side or lee face and each barrel meets at right angles or acute angle.
5, a kind of internal combustion type pulverized coal burner that efficiently has incendiary source as claimed in claim 1 or 2 is characterized in that: steady flame piece is disposed in the exit of this grade sleeve or is arranged in inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100975035A CN101294705A (en) | 2007-04-25 | 2007-04-25 | Highly effective internal combustion type pulverized coal burner with ignition source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100975035A CN101294705A (en) | 2007-04-25 | 2007-04-25 | Highly effective internal combustion type pulverized coal burner with ignition source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101294705A true CN101294705A (en) | 2008-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100975035A Pending CN101294705A (en) | 2007-04-25 | 2007-04-25 | Highly effective internal combustion type pulverized coal burner with ignition source |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696800B (en) * | 2009-10-22 | 2011-01-19 | 中国计量学院 | Variable-section micro-oil combustion chamber |
| US20120178030A1 (en) * | 2010-12-23 | 2012-07-12 | Alstom Technology Ltd | System and method for reducing emissions from a boiler |
| CN101761924B (en) * | 2008-12-23 | 2012-08-29 | 烟台龙源电力技术股份有限公司 | Pulverized coal concentrator and pulverized coal burner applying same |
| CN103912873A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Separate-type pulverized coal nozzle |
| CN107420889A (en) * | 2016-05-24 | 2017-12-01 | 斗山重工业株式会社 | The nozzle head of coal burner |
-
2007
- 2007-04-25 CN CNA2007100975035A patent/CN101294705A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761924B (en) * | 2008-12-23 | 2012-08-29 | 烟台龙源电力技术股份有限公司 | Pulverized coal concentrator and pulverized coal burner applying same |
| CN101696800B (en) * | 2009-10-22 | 2011-01-19 | 中国计量学院 | Variable-section micro-oil combustion chamber |
| US20120178030A1 (en) * | 2010-12-23 | 2012-07-12 | Alstom Technology Ltd | System and method for reducing emissions from a boiler |
| US10502415B2 (en) | 2010-12-23 | 2019-12-10 | General Electric Technology Gmbh | System and method for reducing emissions from a boiler |
| CN103912873A (en) * | 2014-03-28 | 2014-07-09 | 无锡华光锅炉股份有限公司 | Separate-type pulverized coal nozzle |
| CN107420889A (en) * | 2016-05-24 | 2017-12-01 | 斗山重工业株式会社 | The nozzle head of coal burner |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20081029 |