CN201050782Y - Opposite flowing type coal power burner - Google Patents
Opposite flowing type coal power burner Download PDFInfo
- Publication number
- CN201050782Y CN201050782Y CNU2007200519964U CN200720051996U CN201050782Y CN 201050782 Y CN201050782 Y CN 201050782Y CN U2007200519964 U CNU2007200519964 U CN U2007200519964U CN 200720051996 U CN200720051996 U CN 200720051996U CN 201050782 Y CN201050782 Y CN 201050782Y
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- combustion barrel
- liquidates
- coal dust
- tangential wind
- wind inlet
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Abstract
The utility model discloses an opposed coal-powder combustion furnace, which comprises at least one couple of coal-powder burners and a furnace body provided with a hearth and a smoke outlet, wherein the utility model further comprises at least one couple of combustion barrels respectively communicated with the hearth, while each coal-powder burner is arranged at one end of one combustion barrel far away the hearth, and the communication opening between one combustion barrel and the inner wall of the hearth is opposite the communication opening between another combustion barrel and the inner wall of the hearth. The utility model arranges a couple of symmetry combustion barrels, to completely oppose two high-temperature high-speed smoke flows that flow into the hearth, to uniformly flow smoke and avoid local high-temperature coking.
Description
Technical field
The utility model is about a kind of Thermal Equipment, particularly about a kind of be the combustion furnace of fuel with the coal dust.
Background technology
At present, energy crisis has become the problem that the people of the world pays close attention to, and Energy restructuring is all being carried out in countries in the world, to save the existing energy to greatest extent.
For a long time, most of coal-burning installations are directly to act as a fuel with coal cinder.Yet those skilled in the art knows, because the volume of coal cinder is bigger, in the burning time that combustion apparatus is set, the core of coal cinder is difficult to be burnt fully even is not burned fully, and this has caused a large amount of wastes of resource.
Now, a lot of coal-burning installations bring into use coal dust to act as a fuel.As everyone knows, the particle of coal dust is less, can fully contact with oxygen, and whole particle can both be burnt from outside to inside fully.In addition, the device of burning coal cinder must be selected quality coal preferably usually for use, and the device of combusting coal fines generally the quality requirement to coal is all lower, can reduce fuel cost like this, and can save down the high-quality coal and be used for other prior occasions.
A kind of traveling-grate stoker that is disclosed for No. 97210686.3 as Chinese patent adds the novel furnace of coal dust compound combustion, the primary structure of this stove is to arrange traveling-grate stoker in lower furnace portion, above fire grate, arrange coal burner, adopt the blower mill unit pulverized-coal system.Fire grate and coal dust are auxiliary each other in combustion process, maximize favourable factors and minimize unfavourable ones.The fire box temperature height, calorific intensity is big, has simultaneously two adaptability that load variations and coal are changed.But the novel furnace that this traveling-grate stoker adds the coal dust compound combustion has following defective: at first, its burn simultaneously coal cinder and coal dust, integral combustion efficient still can reduce because of coal cinder; Secondly, the thermal-flame of coal burner directly acts on traveling-grate stoker, is easy to traveling-grate stoker is burnt out; In addition, coal burner causes localized hyperthermia in burner hearth, and local coking phenomenon takes place easily; At last, coal burner needs special combustion chamber, directly is installed at the maximal efficiency that often can not bring into play coal burner on the burner hearth.
Therefore, provide a kind of efficiency of combustion high, that can avoid localized hyperthermia's coking, that operating cost is low, be convenient to become the problem that industry need solve from the formula that the liquidates coal dust furnace that existing combustion furnace transformation forms.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of formula that liquidates coal dust furnace that can fully improve efficiency of combustion.
A kind of technical scheme of the present utility model is: a kind of formula coal dust furnace that liquidates is provided, comprise at least one pair of coal burner and be provided with burner hearth and the body of heater of exhanst gas outlet, wherein, this combustion barrel that the formula coal dust furnace comprises that further at least one pair of is communicated with burner hearth respectively that liquidates, each coal burner is separately positioned on the end away from burner hearth of one of them combustion barrel, and the connected entrance of one of them combustion barrel and inboard wall of burner hearth is towards the connected entrance of another combustion barrel and inboard wall of burner hearth.
The connected entrance of so-called one of them combustion barrel and inboard wall of burner hearth is towards the connected entrance of another combustion barrel and inboard wall of burner hearth, be meant, the setting of connected entrance is wanted the two strands of high temperature and high speed flue gases (flame) that flow in the burner hearth from two combustion barrels are respectively head-on liquidated fully, make flue gas to all directions evenly diffusion flow rather than directly be flushed on the regional area of hearth wall, thereby avoid localized hyperthermia's coking phenomenon, and this head-on liquidating can further be strengthened the mixed combustion effect of flue gas, fully improves efficiency of combustion.Head-on liquidating can be that the major part at least of two strands of flue gases has taken place to liquidate.Preferred scheme is that the connected entrance of one of them combustion barrel and inboard wall of burner hearth faces the connected entrance of another combustion barrel and inboard wall of burner hearth, and the area of two connected entrances equates.
Preferably, be respectively equipped with the tangential wind inlet that at least one is used for the inflow side whirlwind on each combustion barrel, tangential wind inlet leaves the distance of coal burner more than or equal to 1/2nd of combustion barrel diameter, such as, the most tangential wind inlet of close coal burner approximates the diameter of combustion barrel apart from the distance of coal burner.Like this, the coal dust that coal burner sprays into combustion barrel can mix rotary combustion fully under tangential wind action, improved efficiency of combustion greatly.Particularly, can select following several scheme: be interval with two tangential wind inlets on each combustion barrel, two tangential wind inlets lay respectively on two combustion barrel cross sections that are parallel to each other; Perhaps, be respectively equipped with two groups or two groups of above tangential wind inlets on each combustion barrel, the above tangential wind inlet of two groups or two groups lays respectively on two or more the cross section that is parallel to each other of combustion barrel, and every group of tangential wind inlet comprises the tangential wind inlet on the circumference of same cross-sectional profiles of being spacedly distributed of (such as three) more than two or two.
Preferably, the inner surface contour line of offering direction and combustion barrel of each tangential wind inlet is tangent, the bore dia of each tangential wind inlet is smaller or equal to 1/3rd of the interior diameter of combustion barrel, equal such as, the bore dia of each tangential wind inlet combustion barrel interior diameter 1/5th.
Preferably, the bottom of burner hearth is provided with traveling-grate stoker, and lays the skim anthracite, to prevent to burn out fire grate.This traveling-grate stoker as required slow running for use in automatic removing dust.
Preferably, a pair of combustion barrel is respectively L shaped, each combustion barrel comprises vertical pipe and the transverse pipe that is interconnected respectively, coal burner and tangential wind inlet are arranged on vertical pipe, transverse pipe is communicated with burner hearth, and the axial line of the transverse pipe of one of them combustion barrel overlaps with the axial line of the transverse pipe of another combustion barrel.In addition, vertically pipe and transverse pipe junction form the turning smoke-box, can further improve the coal dust burnout rate.
Particularly, body of heater comprises antetheca, rear wall, Zuo Bi, You Bi, roof and diapire, and the transverse pipe symmetrical connection of a pair of combustion barrel is on Zuo Bi and right wall and vertical with right wall with Zuo Bi respectively.Preferably, Zuo Bi and You Bi be arranged in parallel, and the connected entrance of a pair of combustion barrel and burner hearth lays respectively at the middle part of Zuo Bi and right wall.Vertical pipe of a pair of combustion barrel is vertical with transverse pipe respectively and be parallel to roof and/or diapire.Exhanst gas outlet is located on the roof.
Selectively, do not adopt traveling-grate stoker, be used for artificial ash discharge but on diapire, further be provided with ash hole.Selectively, do not adopt traveling-grate stoker, but near diapire, further be provided with blowing pipe, blow ash automatically.
Selectively, body of heater can adopt tubular structure.
Selectively, can only be provided with a pair of transverse pipe vertical with right wall with body of heater Zuo Bi, coal burner and tangential wind inlet are arranged on the transverse pipe.
Selectively, can on body of heater, be symmetrical arranged two pairs or more to combustion barrel.
Selectively, the structure of the formula coal dust furnace that liquidates of the present utility model can be used to other fuel that burn after having changed burner.
The beneficial effects of the utility model are: at first, be symmetrical arranged a pair of combustion barrel, two strands of high temperature and high speed flue gases that flow in the burner hearth are head-on liquidated fully, make flow of flue gas even, avoided localized hyperthermia's coking phenomenon; Secondly, the sidespin wind that flows into from tangential wind inlet rotates the pulverized coal particle of coal burner ejection at a high speed, and it is violent that coal dust and air are mixed, and forms combustion powered of a full fireball shape in combustion barrel, the burnout rate height; In addition, vertical pipe of combustion barrel and the junction between the transverse pipe form the turning smoke-box, have prolonged the time of staying of flue gas in combustion barrel, can further improve the coal dust burnout rate; In addition, the coal dust that adopts colm to make also can burn in the formula coal dust furnace that liquidates of the present utility model fully effectively, thereby can reduce operating cost greatly; At last, existing chain furnace just can form the formula coal dust furnace that liquidates of the present utility model through simple the transformation, and improvement cost is low, and efficiency of combustion can be improved more than 10% after transforming.
Below in conjunction with drawings and Examples; further specify the utility model; but the utility model is not limited to these embodiment, any on the utility model essence spirit improvement or substitute, still belong to scope required for protection in the utility model claims.
Description of drawings
Fig. 1 is the schematic diagram of the chain furnace of prior art.
Fig. 2 is the schematic diagram of embodiment 1 of the present utility model.
Fig. 3 is the other direction schematic diagram of embodiment 1 of the present utility model.
Fig. 4 is the schematic diagram of embodiment 2 of the present utility model.
Fig. 5 is the tangential wind inlet distribution schematic diagram of embodiment 2 of the present utility model.
The specific embodiment
Embodiment 1
Please refer to Fig. 1, the formula coal dust furnace that liquidates of the present utility model is that the chain furnace transformation by prior art forms.The chain furnace of prior art comprises the body of heater 100 that is provided with burner hearth 105 and exhanst gas outlet 150.Be provided with traveling-grate stoker 110 in the burner hearth 105, coal cinder 120 is transported to burning in the burner hearth 105 by traveling-grate stoker.Also be provided with firebreak 130 in the burner hearth 105, be used for the holdup time of prolong smoke, prevent that flue gas from flowing out from exhanst gas outlet 150 too quickly.
Please refer to Fig. 2 and Fig. 3, the formula coal dust furnace that the liquidates of the present utility model firebreak 130 of having dismantled, and on the Zuo Bi of body of heater 200 and right wall, be provided with the identical L shaped combustion barrel 260 of a pair of shape symmetrically.
Each combustion barrel 260 comprises vertical pipe 261 and the transverse pipe 265 that is interconnected respectively.Vertically the junction of pipe 261 and transverse pipe 265 forms turning smoke-box 263.Vertically an end of pipe 261 is equipped with coal burner 280.
Body of heater 200 comprises antetheca, rear wall, Zuo Bi, You Bi, roof and diapire, and wherein, Zuo Bi and You Bi be arranged in parallel.The transverse pipe 265 of combustion barrel 260 is vertically set on the middle part of Zuo Bi and right wall respectively.The axial line of two transverse pipe 265 overlaps, and each combustion barrel 260 equates with connected entrance 268 areas of burner hearth 205 inwalls.Vertical pipe 261 of combustion barrel 260 is horizontally disposed with and is vertical with transverse pipe 265.Exhanst gas outlet 250 is opened on the roof of body of heater 200.
Being interval with two 269, two tangential wind inlets 269 of tangential wind inlet that are used for the inflow side whirlwind on each combustion barrel 260 lays respectively on two combustion barrel cross sections that are parallel to each other.The tangential wind inlet 269 of that of the most close coal burner 280 approximates 15 times of combustion barrel 260 diameters apart from the distance of coal burner 280, and another tangential wind inlet 269 approximates four times of combustion barrel 260 diameters apart from the distance of coal burner 280.Wherein, the inner surface contour line of offering direction and combustion barrel 260 of each tangential wind inlet 269 is tangent, and the bore dia of each tangential wind inlet 269 approximates the sixth of the interior diameter of combustion barrel.
Traveling-grate stoker 210 is retained, and is used for slow running so that automatic removing dust.Further can on traveling-grate stoker 210, lay skim anthracite 220, to prevent that it from being burnt out.
During use, coal burner 280 spray into pulverized coal particle in the combustion barrel 260 under the sidespin wind action that tangential wind inlet 269 flows at a high speed rotation and with the violent mixed combustion of air, high-temperature flue gas after the burning enters burner hearth 205 via connected entrance 268, two strands of high temperature and high speed flue gases head-on liquidate fully, and further fully flow out from exhanst gas outlet 250 the burning back.
Embodiment 2
As another kind of embodiment of the present utility model, other parts are identical with embodiment 1, and difference is:
Please refer to Fig. 4, the formula that the liquidates coal dust furnace of present embodiment is not to be formed by the chain furnace transformation, but adopts custom-designed body of heater 300.Wherein, body of heater 300 comprises burner hearth 305, exhanst gas outlet 350 and the ash hole 308 that is used for artificial ash discharge.
Please refer to Fig. 5, be respectively equipped with two groups tangential wind inlet on each combustion barrel 260, every group of tangential wind inlet lays respectively on two cross sections that are parallel to each other of combustion barrel 260.Wherein, every group of tangential wind inlet comprises three tangential wind inlets 269 that are spacedly distributed on same cross-sectional circumferential.
Claims (10)
1. formula coal dust furnace that liquidates, comprise at least one pair of coal burner and be provided with burner hearth and the body of heater of exhanst gas outlet, it is characterized in that, this formula coal dust furnace that liquidates further comprises the combustion barrel that at least one pair of is communicated with described burner hearth respectively, each described coal burner is separately positioned on the end away from described burner hearth of one of them described combustion barrel, and the connected entrance of one of them described combustion barrel and described inboard wall of burner hearth is towards the connected entrance of another described combustion barrel and described inboard wall of burner hearth.
2. the formula coal dust furnace that liquidates as claimed in claim 1, it is characterized in that, be respectively equipped with at least one tangential wind inlet on each described combustion barrel, described tangential wind inlet leaves the distance of described coal burner more than or equal to 1/2nd of described combustion barrel diameter.
3. the formula coal dust furnace that liquidates as claimed in claim 2 is characterized in that, is interval with two tangential wind inlets on each described combustion barrel, and described two tangential wind inlets lay respectively on two combustion barrel cross sections that are parallel to each other.
4. the formula coal dust furnace that liquidates as claimed in claim 1, it is characterized in that, be respectively equipped with the above tangential wind inlets of two groups or two groups on each described combustion barrel, described every group of tangential wind inlet lays respectively on two or more the cross section that is parallel to each other of described combustion barrel.
5. the formula coal dust furnace that liquidates as claimed in claim 4 is characterized in that, described every group of tangential wind inlet comprises the tangential wind inlet on same circumference of being spacedly distributed more than two or two.
6. as the described formula coal dust furnace that liquidates of one of claim 1～5, it is characterized in that, the inner surface contour of offering direction and described combustion barrel of described tangential wind inlet is tangent, and the bore dia of described each tangential wind inlet is smaller or equal to 1/3rd of the interior diameter of described combustion barrel.
7. the formula coal dust furnace that liquidates as claimed in claim 6 is characterized in that the bottom of described burner hearth is provided with traveling-grate stoker.
8. the formula coal dust furnace that liquidates as claimed in claim 6, it is characterized in that, described a pair of combustion barrel is respectively L shaped, each described combustion barrel comprises vertical pipe and the transverse pipe that is interconnected respectively, described coal burner and described tangential wind inlet are arranged on described vertical pipe, described transverse pipe is communicated with described burner hearth, and the axial line of the transverse pipe of one of them described combustion barrel overlaps with the axial line of the transverse pipe of another described combustion barrel.
9. the formula coal dust furnace that liquidates as claimed in claim 8, it is characterized in that, described body of heater comprises antetheca, rear wall, Zuo Bi, You Bi, roof and diapire, and the transverse pipe symmetry of described a pair of combustion barrel is connected on described left wall and the described right wall and is vertical with described right wall with described left wall respectively.
10. the formula coal dust furnace that liquidates as claimed in claim 9 is characterized in that, vertical pipe of described a pair of combustion barrel is vertical with described transverse pipe respectively and be parallel to described roof and/or diapire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200519964U CN201050782Y (en) | 2007-05-29 | 2007-05-29 | Opposite flowing type coal power burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200519964U CN201050782Y (en) | 2007-05-29 | 2007-05-29 | Opposite flowing type coal power burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201050782Y true CN201050782Y (en) | 2008-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200519964U Expired - Fee Related CN201050782Y (en) | 2007-05-29 | 2007-05-29 | Opposite flowing type coal power burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201050782Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628724A (en) * | 2020-12-23 | 2021-04-09 | 哈尔滨工业大学 | Industrial pulverized coal boiler with double horizontal hearths arranged in opposite flushing mode |
-
2007
- 2007-05-29 CN CNU2007200519964U patent/CN201050782Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628724A (en) * | 2020-12-23 | 2021-04-09 | 哈尔滨工业大学 | Industrial pulverized coal boiler with double horizontal hearths arranged in opposite flushing mode |
| CN112628724B (en) * | 2020-12-23 | 2021-10-29 | 哈尔滨工业大学 | Industrial pulverized coal boiler with double horizontal hearths arranged in opposite flushing mode |
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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: 20080423 |