CN102080822B - Combustor and manufacturing method thereof - Google Patents
Combustor and manufacturing method thereof Download PDFInfo
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- CN102080822B CN102080822B CN 201010601279 CN201010601279A CN102080822B CN 102080822 B CN102080822 B CN 102080822B CN 201010601279 CN201010601279 CN 201010601279 CN 201010601279 A CN201010601279 A CN 201010601279A CN 102080822 B CN102080822 B CN 102080822B
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- burner
- solid fuel
- particle
- combustor
- cone
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Abstract
The embodiment of the invention discloses a combustor and a manufacturing method thereof, belonging to the technical field of energy source combustion equipment and solving the technical problem that large-particle pulverized coal in the traditional combustor cannot be completely combusted. The combustor comprises an entrance segment and an exit segment that are connected with a turning segment, and a trimming structure for trimming solid fuel particles with different sizes is arranged inside the combustor. The manufacturing method of the combustor is used for manufacturing the combustor provided by the invention. The combustor is used for increasing the combustion efficiency of the combustor to realize the purposes of energy saving and environmental friendliness.
Description
Technical field
The invention belongs to energy combustion apparatus technical field, be specifically related to a kind of burner and manufacture method thereof.
Background technology
Along with becoming increasingly conspicuous of global energy problem, people more and more pay attention to energy-conservation and environmental protection, and the people of the contact energy and environmental area are especially true.Coal burner is energy-conservation and the major issue environmental protection aspect as the capital equipment of large-scale power supply, heating unit.
The combustion systems such as domestic power station generally adopt turbulent burner, comprise entrance and outlet section that turnaround section connects.Primary air nozzle by the porch after coal dust mixes with air enters burner, and utilizes swirl secondary air mouth and the eddy flow tertiary air orifice at burner outlet place, and fuel is fully mixed with air, and it is more stable to burn.Because the inertia of the bulky grain coal dust in the coal dust is larger, through the burner turnaround section time, the outer arc that is concentrated in the burner turnaround section flows, and this part coal dust can not evenly be mixed with air, even flows the flow phenomenon of namely restricting with the form of assembling fibring.The rope flow phenomenon can cause coal dust firing inhomogeneous, insufficient, makes flame very unstable, significantly reduces efficiency of combustion; And can produce slagging scorification, also can produce the toxic gases such as carbon monoxide, increase the pollutant in lime-ash and the flue gas, contaminated environment.
For avoiding the flow phenomenon of restricting, existing coal burner adopts following structure usually: as shown in Figure 1, existing coal burner comprises entrance 2 and the outlet section 3 that turnaround section 1 connects.The mixture of coal dust and air enters after the entrance 2, bulky grain coal dust in the coal dust is through burner turnaround section 3 time, the outer arc that is concentrated in burner turnaround section 3 flows, folding powder plate 4 through outlet section 3 can make the bulky grain coal dust tend to the shaft core position of burner, then impinges upon on the diffusing cone 5.Because diffusing cone 5 is broken up the coal dust that concentrates in together, and makes a lot of bulky grain coal dusts be dispersed in the position far away apart from the burner axle center, has avoided the rope flow phenomenon.
The inventor finds in realizing process of the present invention, there is following problem at least in prior art: the burner of prior art makes the ejection of a lot of bulky grain coal dusts position far away from distance burner axle center, causes the technical problem that the bulky grain coal dust can not completing combustion.
Summary of the invention
The invention provides a kind of burner, the bulky grain solid fuel comparatively fully can be burnt.
For achieving the above object, burner of the present invention adopts following technical scheme:
This burner; comprise entrance and outlet section; and be connected to turnaround section between entrance and the outlet section; be provided with the arrangement structure that the solid fuel particle of different-grain diameter is put in order in burner inside; solid fuel particle is after the arrangement of arrangement structure, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
Among the present invention; by being arranged at the arrangement structure of burner inside; particle to different-grain diameter is put in order; so that the solid fuel particle of large particle diameter comes together in the position in burner axle center; can with the position ejection of bulky grain solid fuel from the burner axle center, the bulky grain solid fuel comparatively fully be burnt.
The present invention also provides a kind of manufacture method of burner, the bulky grain solid fuel comparatively fully can be burnt.
For achieving the above object, the manufacture method of burner of the present invention adopts following technical scheme:
The manufacture method of this burner may further comprise the steps:
Form the arrangement structure that the solid fuel particle of different-grain diameter is put in order in the inside of burner; Wherein, solid fuel particle is after the arrangement of arrangement structure, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.Compared with prior art, by the burner that manufacture method of the present invention makes, the solid fuel particle of large particle diameter can be come together in the position ejection in burner axle center, the bulky grain solid fuel can comparatively fully be burnt.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of existing burner internal structure;
The schematic diagram of a kind of embodiment of the burner that Fig. 2 provides for embodiments of the invention 1;
The burner that Fig. 3 provides for embodiments of the invention 1 is to the finishing effect schematic diagram of little pulverized coal particle;
The burner that Fig. 4 provides for embodiments of the invention 1 is to the finishing effect schematic diagram of large pulverized coal particle;
The burner that Fig. 5 provides for embodiments of the invention 1 is to the finishing effect schematic diagram of the pulverized coal particle of different-grain diameter.
The schematic diagram of the turnaround section of the burner that Fig. 6 provides for embodiments of the invention;
The schematic diagram of a kind of embodiment of the burner that Fig. 7 provides for embodiments of the invention 2;
The schematic diagram of a kind of embodiment of the burner that Fig. 8 provides for embodiments of the invention 3.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not paying creative work belongs to the scope of protection of the invention.
The invention provides a kind of energy-conserving and environment-protective and efficiency of combustion height, the burner of flame stabilization and the manufacture method of this burner.
This burner; comprise entrance and outlet section; and be connected to turnaround section between entrance and the outlet section; be provided with the arrangement structure that the solid fuel particle of different-grain diameter is put in order in burner inside; solid fuel particle is after the arrangement of arrangement structure, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
Among the present invention, by being arranged at the arrangement structure of burner inside, the whole layer of the particle of different-grain diameter is processed, oarse-grained solid fuel is concentrated on the position in burner axle center, and evenly mix with air, from the outlet ejection of burner.
The manufacture method of this burner may further comprise the steps: form the arrangement structure that the solid fuel particle of different-grain diameter is put in order in the inside of burner; Wherein, solid fuel particle is after the arrangement of arrangement structure, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
By the burner that manufacture method of the present invention makes, the solid fuel particle of large particle diameter can be come together in the position ejection in burner axle center, the bulky grain solid fuel can comparatively fully be burnt.
Embodiment 1:
As shown in Figure 2, the burner that the embodiment of the invention provides, comprise entrance 2 and outlet section 3, and be connected to turnaround section 1 between entrance 2 and the outlet section 3, be provided with the hierarchic structure 6 that the solid fuel particle of different-grain diameter is put in order in burner inside, this hierarchic structure 6 is positioned on the inwall of turnaround section 1 outer arc.Solid fuel particle is after hierarchic structure 6 arrangements, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
As shown in Figure 3, the burner that the embodiment of the invention provides is preferably used as coal burner, and namely the solid fuel of burner inside is coal dust.Less pulverized coal particle is when the burner, because the quality of little pulverized coal particle is less, inertia is also little, thus little pulverized coal particle be easy to along with air-flow by turnaround section 1, and be difficult for striking on the hierarchic structure 6 that is arranged at turnaround section 1 outer arc.Therefore less pulverized coal particle still keeps distributing uniformly on the burner cross section by after the turnaround section 1.When these little pulverized coal particles arrive swirl secondary air outlet and the outlet of eddy flow tertiary air, the turning effort of swirl diffuser, air is outwards flowed along burner cross-sectional circumferential tangential direction, near the little pulverized coal particle of circle centre position radially because inertia is less, so along with the air movement that outwards flows to position far away, distance burner axle center.
As shown in Figure 4, when larger pulverized coal particle passed through burner, because the quality of large rough coal powder particles is large, inertia was also large, rebounds so can strike on the hierarchic structure 6 that is arranged at turnaround section 1 outer arc.When large pulverized coal particle impinged upon on the ladder of hierarchic structure 6, large pulverized coal particle can under the acting in conjunction to it of inertia, self gravitation and air-flow, flow to the shaft core position of burner; The inner arc of the large pulverized coal particle of small part close turnaround section 1 by turnaround section 1 time, do not impinge upon on the hierarchic structure 6 or strike ladder near outlet section 3, and along outlet section 3 near turnaround section outer arc one side flow, afterwards self gravitation effect under can fall back to the shaft core position of burner.When these large pulverized coal particles arrive swirl secondary air outlet and the outlet of eddy flow tertiary air, also can be subject to along the outside air effect that flows of burner cross-sectional circumferential tangential direction, but because large pulverized coal particle inertia is very large, make these coal dusts still be in the position in burner axle center.
The burner inside that the embodiment of the invention provides is provided with the arrangement structure that the pulverized coal particle of different-grain diameter is put in order, be hierarchic structure 6, the particle diameter of pulverized coal particle is larger, after hierarchic structure 6 layerings arrangement, will the closer to the position in burner axle center, make the distribution situation of coal dust on burner outlet section 3 cross sections of final ejection as shown in Figure 5.Coal dust is in the process of burning, be distributed in the locational little pulverized coal particle far away apart from the burner axle center and be easy to burning, good burning situation is provided for the large pulverized coal particle that is distributed in shaft core position, the large pulverized coal particle that is distributed on the burner shaft core position can comparatively fully be burnt, thereby efficiency of combustion and combustion stability have been improved, reduce the pollutant in lime-ash and the flue gas, reached the purpose of energy-conserving and environment-protective.
As shown in Figure 6, in the burner that the embodiment of the invention provides, the single ladder height of hierarchic structure 6 or width are more than or equal to 20mm and less than or equal to 100mm.
As a preferred version, the height of each ladder and width L equate, the stepped uniform on the hierarchic structure 6 is distributed, and the large pulverized coal particle that strikes on the ladder also can evenly scatter, and focuses on the position in burner axle center, avoids forming rope stream.Adopt the structure of 20mm≤L≤100mm to make the quantity of ladder and density moderate, the effect of more effective realization arrangement coal dust.
In the burner that the embodiment of the invention provides, the angle between the air flow of the step surface of hierarchic structure 6 and inflow burner is adjustable.
As shown in Figure 2, as a preferred version, hierarchic structure 6 is manufactured the bascule of similar blind window, angle between the air flow of the step surface of adjusting hierarchic structure 6 and inflow burner, namely adjust the in-plane that hierarchic structure 6 contacts with solid fuel, can change the later angle of rebound of coal dust and ladder bump, the arrangement structure that the embodiment of the invention is provided can be applicable to the different coal dust of physical property, also can be applicable to different wind conditions.
In the burner that the embodiment of the invention provides, one of them step surface of hierarchic structure 6 is vertical with the air flow that flows into burner.
Flow direction when coal dust flows into turnaround section 1 from entrance is consistent with the flow direction of air, adopts this structure that coal dust is vertically struck on the ladder, and the phase mutual friction does not occur, and such impact effects is best, effectively realizes the effect of arrangement coal dust.
As shown in Figure 2, in the burner that the embodiment of the invention provides, the arrangement structure further comprises folding powder plate 4, and folding powder plate 4 is positioned at outlet section 3 near on the inwall of turnaround section 1 outer arc one side, and the guide face of folding powder plate 4 forms an angle with the air flow that flows out burner.
As previously mentioned, the inner arc of the large pulverized coal particle of small part close turnaround section 1 by turnaround section 1 time, do not impinge upon on the hierarchic structure 6, and along outlet section 3 close turnaround section 1 outer arc one side flow, this part large pulverized coal particle can flow through from the guide face of folding powder plate 4; Perhaps strike the ladder near outlet section 3, and strike on the folding powder plate 4, because the guide face of folding powder plate 4 is inclined-planes, so the large pulverized coal particle that flows through from folding powder plate 4 can flow to along the guide face direction position in burner axle center.Adopt the structure of folding powder plate 4, can guarantee that these large pulverized coal particles that do not contact with hierarchic structure 6 also can flow to the position in burner axle center, and avoid these large pulverized coal particles because self gravitation is not enough, still be positioned at apart from the position far away, burner axle center.
At the little pulverized coal particle that folding powder plate 4 places of outlet section 3 a side inwall flows, because inertia is very little, can walks around folding powder plate 4 along with air-flow, and can not changed flow direction by folding powder plate 4.
In the burner that the embodiment of the invention provides, the guide face of folding powder plate 4 is adjustable with the angle that the air flow that flows out burner becomes, and/or the spacing of folding powder plate 4 and turnaround section 1 is adjustable.
Regulate the angle that guide face becomes with the air flow that flows out burner, or the spacing of adjusting folding powder plate 4 and turnaround section 1, can change folding powder plate 4 pairs of pulverized coal flows to finishing effect, the arrangement structure that the embodiment of the invention is provided can be applicable to the different coal dust of physical property, also can be applicable to different wind conditions.
Embodiment 2:
As shown in Figure 7, present embodiment is substantially the same manner as Example 1, and its difference is: the arrangement structure comprises the inwall fovea superior convex configuration 7 of turnaround section 1 outer arc that is positioned at burner in the present embodiment.
In the present embodiment, when larger pulverized coal particle passed through burner, because the quality of large rough coal powder particles is large, inertia was also large, rebounds so can strike on the male and fomale(M﹠F) structure 7 that is arranged at turnaround section 1 outer arc.When large pulverized coal particle impinged upon on the male and fomale(M﹠F), large pulverized coal particle can under the acting in conjunction to it of inertia, self gravitation and air-flow, flow to the shaft core position of burner; The inner arc of the large pulverized coal particle of small part close turnaround section 1 by turnaround section 1 time, do not impinge upon on the male and fomale(M﹠F) structure 7 or strike male and fomale(M﹠F) structure 7 near the part of outlet sections 3, and along outlet section 3 close turnaround section 1 outer arc one side flow, under the effect of self gravitation, can fall back to afterwards the shaft core position of burner.The particle diameter of pulverized coal particle is larger, after 7 arrangements of male and fomale(M﹠F) structure, will the closer to the position in burner axle center, make the distribution situation of coal dust on burner outlet section cross section of final ejection as shown in Figure 5.
Embodiment 3:
As shown in Figure 8, in the burner that the embodiment of the invention provides, comprise entrance 2 and outlet section 3, and be connected to turnaround section 1 between entrance 2 and the outlet section 3, the inside of outlet section 3 is provided with the conical screen 8 as the arrangement structure, the vertex of a cone 81 of conical screen 8 points to the outlet of burner, and the mesh from the cone end 82 to the vertex of a cone 81 increases gradually.
Coal dust for different-grain diameter, the mesh of different sizes upwards is set in the footpath of conical screen 8, make little pulverized coal particle pass taper mesh 8 from any position, large pulverized coal particle then can only be along the conical surface to the vertex of a cone 81 flows, again from passing near the large mesh of the vertex of a cone 81, the particle diameter of pulverized coal particle is larger, passes the position of conical screen 8 just the closer to the vertex of a cone 81.After 8 pairs of coal dusts of conical screen are put in order, make the distribution situation of coal dust on burner outlet section 3 cross sections of final ejection as shown in Figure 5.
As a preferred version, can offer a large through-hole at the vertex of a cone 81 places, make the accidental very large coal cinder that occurs also can pass conical screen 8, prevent that the larger coal cinder of mesh of size ratio maximum from getting lodged in the vertex of a cone 81 of taper mesh 8, cause burner to stop up.
Embodiment 4:
The embodiment of the invention provides a kind of manufacture method of burner, comprises step: on the inwall of burner turnaround section outer arc, form the hierarchic structure that the solid fuel particle of different-grain diameter is put in order; Wherein, solid fuel particle is after the hierarchic structure arrangement, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
Further, step also comprises: at the inwall formation folding powder plate of burner outlet section near turnaround section outer arc one side.
Embodiment 5:
The embodiment of the invention provides a kind of manufacture method of burner, comprises step: on the inwall of burner turnaround section outer arc, form the male and fomale(M﹠F) structure that the solid fuel particle of different-grain diameter is put in order; Wherein, solid fuel particle is after the arrangement of male and fomale(M﹠F) structure, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
Further, step also comprises: at the inwall formation folding powder plate of burner outlet section near turnaround section outer arc one side.
Embodiment 6:
The embodiment of the invention provides a kind of manufacture method of burner, comprises step: form conical screen in the burner outlet section; The vertex of a cone of conical screen points to the outlet of burner, and the mesh from the cone end to the vertex of a cone increases gradually; Wherein, solid fuel particle is after the conical screen arrangement, and the solid fuel particle of large particle diameter comes together in the position in burner axle center.
In said method embodiment, the arrangement structure is identical with the corresponding description among the said burner embodiment to the arrangement process of solid particle fuel, does not repeat them here.
Arbitrary technical scheme in the technique scheme provided by the present invention all has following advantage: the burner that the embodiment of the invention provides and manufacture method thereof, in the flow phenomenon of avoiding restricting, can also be with the position ejection of bulky grain solid fuel from the burner axle center, the bulky grain solid fuel is comparatively fully burnt, make the ejection of a lot of bulky grain coal dusts position far away from distance burner axle center so solved existing burner, cause the technical problem that the bulky grain coal dust can not completing combustion.
Because the manufacture method of the burner that the embodiment of the invention provides has identical technical characterictic with the burner that the embodiment of the invention provides, so also can produce identical technique effect, solves identical technical problem.
The above; be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (2)
1. burner, comprise entrance and outlet section, and be connected to turnaround section between described entrance and the described outlet section, it is characterized in that: be provided with the arrangement structure that the solid fuel particle of different-grain diameter is put in order in described burner inside, solid fuel particle is after described arrangement structure arrangement, and the solid fuel particle of large particle diameter comes together in the position in described burner axle center;
Described arrangement structure comprises the conical screen that is arranged at described outlet section inside, and the vertex of a cone of described conical screen points to the outlet of described burner, and the mesh from the cone end to the vertex of a cone increases gradually.
2. the manufacture method of a burner is characterized in that: may further comprise the steps:
Form the arrangement structure that the solid fuel particle of different-grain diameter is put in order in the inside of described burner, specifically comprise:
Outlet section at described burner forms conical screen, and the vertex of a cone of described conical screen points to the outlet of described burner, and the mesh from the cone end to the vertex of a cone increases gradually;
Wherein, solid fuel particle is after described arrangement structure arrangement, and the solid fuel particle of large particle diameter comes together in the position in described burner axle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010601279 CN102080822B (en) | 2010-12-22 | 2010-12-22 | Combustor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010601279 CN102080822B (en) | 2010-12-22 | 2010-12-22 | Combustor and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102080822A CN102080822A (en) | 2011-06-01 |
| CN102080822B true CN102080822B (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010601279 Expired - Fee Related CN102080822B (en) | 2010-12-22 | 2010-12-22 | Combustor and manufacturing method thereof |
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| Country | Link |
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| CN (1) | CN102080822B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1125308A (en) * | 1994-03-18 | 1996-06-26 | 株式会社日立制作所 | Polverized coal combustion burner |
| JP2781222B2 (en) * | 1989-09-25 | 1998-07-30 | バブコツク日立株式会社 | Pulverized coal combustion equipment |
| CN101082418A (en) * | 2006-06-01 | 2007-12-05 | 巴布考克及威尔考克斯公司 | Large diameter mid-zone air separation cone for expanding irz |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85200214U (en) * | 1985-04-01 | 1985-09-10 | 颜孟秋 | Diesel oil burner for industrial furnace |
| DE19717721A1 (en) * | 1996-04-20 | 1997-10-30 | Al Halbouni Ahmad Dr | Burner arrangement with separate inlet for fuel and combustion air into combustion chamber |
| JP2001201019A (en) * | 2000-01-20 | 2001-07-27 | Sanyo Electric Co Ltd | Combustion device for fuel cell system and hydrogen generating device using the same |
| US6790032B1 (en) * | 2003-01-06 | 2004-09-14 | Kuo-Yu Wu | Straight path carbon powder combustion machine |
-
2010
- 2010-12-22 CN CN 201010601279 patent/CN102080822B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2781222B2 (en) * | 1989-09-25 | 1998-07-30 | バブコツク日立株式会社 | Pulverized coal combustion equipment |
| CN1125308A (en) * | 1994-03-18 | 1996-06-26 | 株式会社日立制作所 | Polverized coal combustion burner |
| CN101082418A (en) * | 2006-06-01 | 2007-12-05 | 巴布考克及威尔考克斯公司 | Large diameter mid-zone air separation cone for expanding irz |
Non-Patent Citations (1)
| Title |
|---|
| JP第2781222号B2 1998.05.15 |
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| CN102080822A (en) | 2011-06-01 |
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