CN202660541U - Pulverized coal burner - Google Patents
Pulverized coal burner Download PDFInfo
- Publication number
- CN202660541U CN202660541U CN 201220306656 CN201220306656U CN202660541U CN 202660541 U CN202660541 U CN 202660541U CN 201220306656 CN201220306656 CN 201220306656 CN 201220306656 U CN201220306656 U CN 201220306656U CN 202660541 U CN202660541 U CN 202660541U
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- CN
- China
- Prior art keywords
- ajutage
- coal burner
- housing
- aforesaid
- import
- 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
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Abstract
The utility model relates to a pulverized coal burner. The pulverized coal burner is characterized by comprising a shell, a first blast pipe, a power-transporting pipe and a second blast pipe, wherein the shell is provided with a first inlet, a second inlet and an outlet, and a mixing cavity is formed between the first inlet and the outlet; the first blast pipe is arranged in the mixing cavity in a penetrating manner and the end of the first blast pipe forms a burner port, and the power-transporting pipe is connected with an inlet air end of the first blast pipe; and the second blast pipe is arranged in the shell and the air is introduced from the second inlet of the shell. Compared with the prior art, the pulverized coal burner provided by the utility model has the advantages that a fractional combustion is formed through air blast for twice, and the low nitrogen oxide discharge is realized; and meanwhile, the combustion in the mixing cavity is full, and the fuel availability is improved.
Description
Technical field
The utility model relates to a kind of burner of coal dust.
Background technology
At present, a large amount of turbulent burners that adopt are as the burner of large coal powder boiler, but common turbulent burner primary and secondary air is mixed strongly, temperature peak is high, nitrogen oxide (NOx) growing amount is large, for effectively controlling the discharge capacity of nitrogen oxide in the process of coal combustion, be necessary turbulent burner is made improvements.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of coal burner that can realize low-nitrogen oxide discharging for the above-mentioned state of the art
The utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of coal burner, it is characterized in that comprising housing, the first ajutage, duff pipe and the second ajutage, aforesaid housing has the first import, the second import and outlet, form hybrid chamber between aforesaid the first import and the outlet, aforesaid the first ajutage runs through and is arranged in the aforesaid hybrid chamber and the end of giving vent to anger forms nozzles, aforesaid duff pipe is connected in the air intake of the first ajutage, and aforesaid the second ajutage is located in the housing and air can be introduced from the second import of housing.
Described the second ajutage partly is tubular and is positioned at the first ajutage periphery, and, described the second ajutage inwall and the first ajutage outer wall have the first gap, the outer wall of described the second ajutage and inner walls have the second gap, are respectively equipped with the cyclone of opposite direction in aforementioned the first gap and the second gap.
The nozzles of described the first ajutage are formed at the inner end of housing.
Be provided with the eseparation ring of a plurality of tapers in described the first ajutage, and each eseparation ring reduces gradually along air-supply wind direction internal diameter.
Described the first ajutage and the second ajutage air intake are provided with one of at least drawing fan.
Compared with prior art, the utility model has the advantage of: twice air-supply, form fractional combustion, be beneficial to and realize low discharged nitrous oxides, while hybrid chamber internal combustion has more abundant, is beneficial to the raising fuel availability.
Description of drawings
Fig. 1 is the embodiment cross-sectional view.
Fig. 2 is the absolute construction schematic diagram of embodiment 1 middle shell.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, coal burner in the present embodiment comprises housing 1, the first ajutage 2, duff pipe 6 and the second ajutage 3, housing 1 has the first import 11, the second import 12 and exports 13, the first import 11 and export 13 between form hybrid chamber, the first ajutage 2 runs through and is arranged in the hybrid chamber and the end of giving vent to anger forms nozzles 21, duff pipe 6 is connected in the air intake of the first ajutage 2, and the second ajutage 3 is located in the housing and air can be introduced from the second import 12 of housing.Be provided with eseparation ring 41 and the eseparation ring 42 of taper in the first ajutage 2, and each eseparation ring reduces gradually along air-supply wind direction internal diameter.
The second ajutage 3 parts are tubular and are positioned at the first ajutage 2 peripheries, and, the second ajutage 3 inwalls and the first ajutage 2 outer walls have the first gap, the outer wall of the second ajutage 3 and housing 1 inwall have the second gap, be respectively equipped with cyclone 51 and the cyclone 52 of opposite direction in the first gap and the second gap, strengthen eddy flow.The nozzles 21 of the first ajutage are formed at the inner end of housing 1, and namely nozzles do not stretch out the outlet of housing.Further.The air intake of the first ajutage 1 is provided with drawing fan (nothing shows among the figure).
During use, body of heater import setting is aimed in the outlet of housing.
Claims (5)
1. coal burner, it is characterized in that comprising housing, the first ajutage, duff pipe and the second ajutage, aforesaid housing has the first import, the second import and outlet, form hybrid chamber between aforesaid the first import and the outlet, aforesaid the first ajutage runs through and is arranged in the aforesaid hybrid chamber and the end of giving vent to anger forms nozzles, aforesaid duff pipe is connected in the air intake of the first ajutage, and aforesaid the second ajutage is located in the housing and air can be introduced from the second import of housing.
2. coal burner according to claim 1, it is characterized in that described the second ajutage partly is tubular and is positioned at the first ajutage periphery, and, described the second ajutage inwall and the first ajutage outer wall have the first gap, the outer wall of described the second ajutage and inner walls have the second gap, are respectively equipped with the cyclone of opposite direction in aforementioned the first gap and the second gap.
3. coal burner according to claim 1 is characterized in that the nozzles of described the first ajutage are formed at the inner end of housing.
4. coal burner according to claim 1 it is characterized in that being provided with in described the first ajutage the eseparation ring of a plurality of tapers, and each eseparation ring reduces gradually along air-supply wind direction internal diameter.
5. coal burner according to claim 1 is characterized in that described the first ajutage and the second ajutage air intake are provided with one of at least drawing fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220306656 CN202660541U (en) | 2012-06-25 | 2012-06-25 | Pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220306656 CN202660541U (en) | 2012-06-25 | 2012-06-25 | Pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202660541U true CN202660541U (en) | 2013-01-09 |
Family
ID=47455447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220306656 Expired - Fee Related CN202660541U (en) | 2012-06-25 | 2012-06-25 | Pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202660541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629663A (en) * | 2013-11-15 | 2014-03-12 | 东方电气集团东方锅炉股份有限公司 | Swirl pulverized coal burner |
-
2012
- 2012-06-25 CN CN 201220306656 patent/CN202660541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629663A (en) * | 2013-11-15 | 2014-03-12 | 东方电气集团东方锅炉股份有限公司 | Swirl pulverized coal burner |
| CN103629663B (en) * | 2013-11-15 | 2016-02-24 | 东方电气集团东方锅炉股份有限公司 | Vortex burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150625 |
|
| EXPY | Termination of patent right or utility model |