CN202371750U - Pure oxygen ignition device for boiler in power station - Google Patents
Pure oxygen ignition device for boiler in power station Download PDFInfo
- Publication number
- CN202371750U CN202371750U CN201120507609XU CN201120507609U CN202371750U CN 202371750 U CN202371750 U CN 202371750U CN 201120507609X U CN201120507609X U CN 201120507609XU CN 201120507609 U CN201120507609 U CN 201120507609U CN 202371750 U CN202371750 U CN 202371750U
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- China
- Prior art keywords
- housing
- ignition device
- pure oxygen
- bluff body
- oxygen
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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.)
- Expired - Fee Related
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- 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 utility model discloses a pure oxygen ignition device for a boiler in a power station, which comprises a cylindrical shell; a plurality of stages of combustion chambers, a micro oil gun, a blunt body and an oxygen supply structure are arranged in the shell; the stages of combustion chambers are arranged from a pulverized coal inlet in the front end of the shell to a flame spray outlet at the rear end of the shell in sequence; the micro oil gun is arranged in the primary combustion chamber close to the end of the pulverized coal inlet; the blunt body is arranged at the flame spray outlet in the shell; and the oxygen supply structure is arranged at one side of the blunt body or is arranged after penetrating through the blunt body and sprays oxygen sprayed from the flame spray outlet into a backflow area formed in a space behind the blunt body. The pure oxygen ignition device has the beneficial effects that through spraying a small quantity of pure oxygen into the backflow area at the rear end of the blunt body arranged at the spray outlet of a pulverized coal burner, the backflow area is in an oxygen-enriched combustion state, so that the temperature in the backflow area is improved, the flame propagation, the flame stability and the pulverized coal sufficient burning are facilitated, and the fly ash carbon content in airflow after ignition is reduced; and moreover, only one micro oil gun is required to be arranged at the end of the inlet of the pulverized coal burner to generate a good oil-saving effect.
Description
Technical field
The utility model relates to the device of a kind of starting ignition and low-load combustion-stabilizing, refers to a kind of station boiler pure oxygen ignition device especially.
Background technology
According to statistics, occupy the second place of the world to whole nation generating equipment installation in the end of the year 2010 total capacity, wherein thermoelectricity accounts for more than 70% of total capacity of installation.The start and stop of thermal power generation unit and low-load combustion-stabilizing need consume a large amount of petroleum resources; International oil price causes fuel price to continue to rise to the impact of domestic market; China is not produce oil big country, but is the oily rich and influential family of consumption, and the fuel-economizing work in the energy savings just has very important Special Significance.Fuel-economizing work is as the important component part of energy conservation; Should strengthen the fuel-economizing management from overall processes such as power plant's design, lectotype selection, construction, maintenance and operations; And, reliably igniting ripe according to the actual conditions active adoption and stable combustion technology transform boiler, reduces thermal power generation station-service oil significantly.Therefore, station boiler pure oxygen ignition technology has broad prospect of application.
The utility model content
To the needs of existing station boiler firing technique, the purpose of the utility model is to provide a kind of rate of economizing gasoline higher, the pure oxygen ignition device of safer reliable igniting and steady combustion.
For realizing above-mentioned purpose; The station boiler pure oxygen ignition device of the utility model; Comprise tubular shell, be provided with composite chamber, little oil gun, bluff body and oxygen supply structure in the housing, the flame ejiction opening of composite chamber from the coal dust import of housing front end to its rear end is arranged in order; Wherein, little oil gun is arranged in the one-level combustion chamber near the coal dust entrance point; Said bluff body is arranged on the flame ejiction opening place on the said housing; Said oxygen supply structure is arranged on bluff body one side or passes the bluff body setting, and the oxygen of its ejection is sprayed in the recirculating zone that forms in the bluff body rear space.
Further, said bluff body is a pyramid or cone, and cone is along the axis setting of said housing flame ejiction opening, and the awl point points to the housing front end, and the cone rear end has the plane that the air-flow that can make ejection in the housing forms the recirculating zone.
Further, said bluff body is three tapered ribs of a section, and this bluff body is along the radially setting of said housing flame ejiction opening, and the awl point points to the housing front end, and the rear end is the plane.
Further, said oxygen supply structure is an annular, and it circumferentially is provided with a plurality of oxygen jets or spray orifice.
Further, also be provided with the Pulverized Coal Concentration ring on the madial wall of the coal dust import department on the said housing.
Further, said outside also is coated with the surrounding air coolant jacket, and this coolant jacket is provided with air inlet, and the corresponding end of flame ejiction opening is provided with exhaust outlet on coolant jacket and the housing, and cooling air is admitted in the boiler furnace as the new wind of secondary simultaneously.
Further, said one-level combustion chamber is the central burner pipe, and the central burner pipe is arranged on the central axis place in the said housing.
The utility model sprays into a small amount of pure oxygen in the recirculating zone through the bluff body rear end that is provided with at coal burner ejiction opening place; Make the recirculating zone be in the oxygen-enriched combustion-supporting state; Improved the recirculating zone temperature; Help flame propagation, flame stabilization and coal dust and fully burn, reduce the unburned carbon in flue dust in the air-flow of igniting back.And only need a little oil gun be set and get final product, produce good oil-saving effect at the entrance point of coal burner.
Description of drawings
Fig. 1 is the structural representation of the pure oxygen ignition device of the utility model;
Fig. 2 is the sketch map of the another kind of form of pure oxygen ignition device of the utility model;
Fig. 3 is the recirculating zone sketch map that the pure oxygen ignition device exit of the utility model forms.
The specific embodiment
As shown in Figure 1; The pure oxygen ignition device of the utility model comprises that Pulverized Coal Concentration ring 1, coal burner 2, central burner pipe 3 (one-level combustion chamber), oil gun sleeve pipe 4, section are leg-of-mutton strip bluff body 5, annular oxygen jet 6 and surrounding air coolant jacket 7; Central burner pipe 3 is positioned on coal burner 2 axis; In order to improve its high-temperature resistance of little oil gun; Little oil gun (not shown) is inserted in the central burner pipe 3 from oil gun sleeve pipe 4, and oil gun sleeve pipe 4 connects with central burner pipe 3, and annular oxygen jet 6 is arranged on a side of coal burner 2 flame ejiction opening place bluff bodies 5; Surrounding air coolant jacket 7 is sleeved on coal burner 2 outsides, utilizes from the new wind of its air inlet input coal burner 2 housings are cooled off.
In the course of work, after breeze airflow encircled through Pulverized Coal Concentration 1, forming core was the thick coal culm air-flow, and part is the thin powdered coal air-flow all around.The thick coal culm air-flow passes through in central burner pipe 3 inside, and the thin powdered coal air-flow passes through in central burner pipe 3 outsides.Oily flame in the oil gun sleeve pipe 4 is lighted the thick coal culm air-flow in central burner pipe 3 inside, in central burner pipe 3 inside, behind little oil gun flame ignition breeze airflow, relies on the 3 steady combustions of central burner pipe.The flame of central burner pipe 3 mixes with the thin powdered coal air-flow in outlet, makes the thin powdered coal air-flow participate in burning.Central burner pipe 3 is exported between burner 2 outlets and is the secondary pulverized coal combustor.Coal burner 2 exits, breeze airflow is walked around bluff body 5, forms the stable centers recirculating zone in bluff body 5 backs, and concentration is that 95% above pure oxygen sprays from ring-type oxygen jet 6, forms local oxygen enrichment zone in the recirculating zone, center, carries out oxygen-enriched combustion-supporting.Oxygen-enriched combustion-supporting strengthens the burning velocity of regional area fuel, improves the regional area ignition temperature, helps lighting back flame propagation.
As shown in Figure 3, coal burner 2 exits, breeze airflow is walked around bluff body 5, forms the stable centers recirculating zone in bluff body 5 backs.Carry out oxygen-enriched combustion-supporting in the recirculating zone, center that behind bluff body, forms; Forming recirculating zone, high temperature center, because the recirculating zone, center is thermograde in the breeze airflow, concentration gradient maximum region, also is that breeze airflow and pure oxygen mix the most powerful zone; Can utilize strong heat and mass effect is arranged between recirculating zone, high temperature center and the breeze airflow; Firing coal-dust airflow reaches reliable ignition breeze airflow and sufficient combustion thus once more, reduces the purpose of the unburned carbon in flue dust in the air-flow of igniting back.Help flame propagation and flame stabilization.
It is to be noted that the foregoing description is exemplary the utility model is explained,, all should not think the protection domain that breaks away from the utility model according to any distortion that the spirit of the utility model is made.
Claims (7)
1. station boiler pure oxygen ignition device; It is characterized in that; Comprise tubular shell, be provided with composite chamber, little oil gun, bluff body and oxygen supply structure in the housing, the flame ejiction opening of composite chamber from the coal dust import of housing front end to its rear end is arranged in order; Wherein, little oil gun is arranged in the one-level combustion chamber near the coal dust entrance point; Said bluff body is arranged on the flame ejiction opening place on the said housing; Said oxygen supply structure is arranged on bluff body one side or passes the bluff body setting, and the oxygen of its ejection is sprayed in the recirculating zone that forms in the bluff body rear space.
2. station boiler pure oxygen ignition device as claimed in claim 1; It is characterized in that; Said bluff body is a pyramid or cone; Cone is along the axis setting of said housing flame ejiction opening, and the awl point points to the housing front end, and the cone rear end has the plane that the air-flow that can make ejection in the housing forms the recirculating zone.
3. station boiler pure oxygen ignition device as claimed in claim 1 is characterized in that, said bluff body is three tapered ribs of a section, and this bluff body is along the radially setting of said housing flame ejiction opening, and the awl point points to the housing front end, and the rear end is the plane.
4. station boiler pure oxygen ignition device as claimed in claim 1 is characterized in that, said oxygen supply structure is an annular, and it circumferentially is provided with a plurality of oxygen jets or spray orifice.
5. station boiler pure oxygen ignition device as claimed in claim 1 is characterized in that, also is provided with the Pulverized Coal Concentration ring on the madial wall of the coal dust import department on the said housing.
6. station boiler pure oxygen ignition device as claimed in claim 1; It is characterized in that; Said outside also is coated with the surrounding air coolant jacket; This coolant jacket is provided with air inlet, and the corresponding end of flame ejiction opening is provided with exhaust outlet on coolant jacket and the housing, and cooling air is admitted in the boiler furnace as the new wind of secondary simultaneously.
7. station boiler pure oxygen ignition device as claimed in claim 1 is characterized in that said one-level combustion chamber is the central burner pipe, and the central burner pipe is arranged on the central axis place in the said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120507609XU CN202371750U (en) | 2011-12-08 | 2011-12-08 | Pure oxygen ignition device for boiler in power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120507609XU CN202371750U (en) | 2011-12-08 | 2011-12-08 | Pure oxygen ignition device for boiler in power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202371750U true CN202371750U (en) | 2012-08-08 |
Family
ID=46595449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120507609XU Expired - Fee Related CN202371750U (en) | 2011-12-08 | 2011-12-08 | Pure oxygen ignition device for boiler in power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202371750U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017160A (en) * | 2013-01-15 | 2013-04-03 | 烟台龙源电力技术股份有限公司 | Ignition burner with pure oxygen combustion supporting |
| CN105546566A (en) * | 2016-01-28 | 2016-05-04 | 浙江宜清环境技术有限公司 | Stable combustion device for low volatile lean coal |
-
2011
- 2011-12-08 CN CN201120507609XU patent/CN202371750U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017160A (en) * | 2013-01-15 | 2013-04-03 | 烟台龙源电力技术股份有限公司 | Ignition burner with pure oxygen combustion supporting |
| CN105546566A (en) * | 2016-01-28 | 2016-05-04 | 浙江宜清环境技术有限公司 | Stable combustion device for low volatile lean coal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Xiufeng Inventor after: Jiang Dongqiao Inventor after: Feng Lin Inventor after: Zhang Liqun Inventor after: Zheng Xiaoming Inventor after: Yan Zhongqian Inventor after: Yan Gaocheng Inventor after: Xin Zhigang Inventor after: Liu Mingjie Inventor after: Xiong Zhuoyuan Inventor after: Hu Wei Inventor after: Hou Dean Inventor after: Yao Wenda Inventor after: Li Fuxiang Inventor after: Zhang Hai Inventor after: Kong Fanping Inventor before: Duan Junzhai Inventor before: Zhang Hai Inventor before: Kong Fanping Inventor before: Jiang Dongqiao Inventor before: Feng Lin Inventor before: Liu Xiaobo Inventor before: Zhang Liqun Inventor before: Zheng Xiaoming Inventor before: Yan Zhongqian Inventor before: Yan Gaocheng Inventor before: Xin Zhigang Inventor before: Guo Xiufeng Inventor before: Liu Mingjie Inventor before: Xiong Zhuoyuan Inventor before: Hu Wei Inventor before: Hou Dean Inventor before: Yao Wenda Inventor before: Zhang Wenpeng Inventor before: Li Fuxiang |
|
| CB03 | Change of inventor or designer information | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DUAN JUNZHAI GUO XIUFENG LIU MINGJIE XIONG ZHUOYUAN HU WEI HOU DEAN YAO WENDA ZHANG WENPENG LI FUXIANG ZHANG HAI KONG FANPING JIANG DONGQIAO HU HONG LIU XIAOBO ZHANG LIQUN ZHANG GUOQI YAN ZHONGQIAN YAN GAOCHENG LIN TING TO: GUO XIUFENG LIU MINGJIE XIONG ZHUOYUAN HU WEI HOU DEAN YAO WENDA LI FUXIANG ZHANG HAI KONG FANPING JIANG DONGQIAO HU HONG ZHANG LIQUN ZHANG GUOQI YAN ZHONGQIAN YAN GAOCHENG LIN TING |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20171208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |