CN204513378U - A kind of fuel-staged combustion low-NOx combustor - Google Patents
A kind of fuel-staged combustion low-NOx combustor Download PDFInfo
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- CN204513378U CN204513378U CN201520078361.8U CN201520078361U CN204513378U CN 204513378 U CN204513378 U CN 204513378U CN 201520078361 U CN201520078361 U CN 201520078361U CN 204513378 U CN204513378 U CN 204513378U
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- burner body
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Abstract
The utility model discloses a kind of fuel-staged combustion low-NOx combustor, described first order fuel gun to be arranged in burner body in the heart, and fuel level enters first order fuel gun, described first order fuel tank is arranged in the fuel tank of the second level, be dispersed into the little combustion gun of multiple first order after described first order fuel gun enters burner body and axial swirler is being set close to nozzle, described axial swirler inner ring and the first order little fuel gun outermost edge junction, described adjustable damper is connected with burner body, described radial swirler is arranged in burner body near air door, this fuel-staged combustion low-NOx combustor, effectively inhibit the generation of NOx, fuel staging and multiple spot disperses combustion, substantially increase efficiency of combustion, reduce the generation of NOx simultaneously, make not easily coking and high temperature corrosion in boiler furnace.
Description
Technical field
The utility model relates to technical field of boiler combustion, is specially a kind of fuel-staged combustion low-NOx combustor.
Background technology
Along with the growth of China's economy and the fast development of power industry, boiler fired coal produce NOx pollutant and increase severely day.Because NOx is huge to the harm of the whole ecosystem to human mater, the control of its discharge capacity is caused to the most attention in global range, China has also formulated stricter exhaustion of nitrogen oxides from coal-fired boiler standard, but due to boiler tail SCR, to take off NOx expensive, adopts low NOx combusting technology to control the discharge capacity of boiler NOx imperative.In recent years, constantly have the technology of low-NOx combustor and product to occur, but more or less all there are some problems, mainly also exist that NOx generation amount is wayward, the easy shortcoming such as coking and high temperature corrosion in burner hearth.
Utility model content
The purpose of this utility model is to provide a kind of fuel-staged combustion low-NOx combustor, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of fuel-staged combustion low-NOx combustor, comprise first order fuel gun, first order fuel tank, secondary fuel rifle, the little fuel gun in the second level, burner body, adjustable damper, radial swirler, spout and axial swirler, described first order fuel gun to be arranged in burner body in the heart, and fuel level enters first order fuel gun, described first order fuel tank is arranged in the fuel tank of the second level, the little combustion gun of multiple first order is dispersed into after described first order fuel gun enters burner body, close to nozzle, axial swirler is being set, described axial swirler inner ring is connected with the little fuel gun outermost edge of the first order, described second level fuel gun and first order fuel gun layout in 90 °, the little combustion gun in multiple second level is dispersed into after described second level fuel gun enters burner body, the internal layer edge of the little fuel gun in the described second level is connected with axial swirler outer ring, described adjustable damper is connected with burner body, described radial swirler is arranged in burner body near air door place.
Preferably, the little fuel gun of the described first order, the little fuel gun in the second level and the end face of axial swirler and the end face distance 100 ~ 200mm of spout.
Preferably, air that described air door an enters part enters burner hearth for direct current wind, and a part enters burner hearth by by radial swirler, a part ofly enters burner hearth by axial swirler.
Compared with prior art, the beneficial effects of the utility model are: this fuel-staged combustion low-NOx combustor, mixed with the whole air needed for burning by primary fuel, carry out conflagration, although the concentration of oxygen is high during primary combustion, but burning is carried out at low temperatures fast, so inhibit the generation of NOx, in the flue gas that secondary fuel and primary combustion generate, remaining oxygen carries out second-time burning, although second-time burning temperature is higher, but because watering down of a large amount of flue gas makes oxygen concentration reduce, therefore effectively inhibit the generation of NOx, fuel staging and multiple spot disperses combustion, substantially increase efficiency of combustion, reduce the generation of NOx simultaneously, make not easily coking and high temperature corrosion in boiler furnace.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model left view.
In figure: 1 first order fuel gun, the little combustion gun of 11 first order, 12 first order fuel tanks, 2 second level fuel guns, the 21 little fuel guns in the second level, 22 second level fuel tanks, 3 burner bodies, 4 adjustable damper, 5 radial swirlers, 6 spouts, 7 axial swirlers.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-2, the utility model provides a kind of technical scheme: a kind of fuel-staged combustion low-NOx combustor, comprise first order fuel gun 1, first order fuel tank 12, second level fuel gun 2, the little fuel gun 21 in the second level, burner body 3, adjustable damper 4, radial swirler 5, spout 6, axial swirler 7, first order fuel gun 1 is arranged on the center of burner body 3, fuel level enters first order fuel gun, first order fuel tank 12 is arranged in second level fuel tank 22, first order fuel gun 1 is dispersed into the little combustion gun 11 of multiple first order after entering burner body 3, axial swirler 7 is being arranged close to nozzle, axial swirler 7 inner ring is connected with the first order little fuel gun 11 outermost edge, second level fuel gun 2 and first order fuel gun layout in 90 °, second level fuel gun 2 is dispersed into the little combustion gun 21 in multiple second level after entering burner body 3, the internal layer edge of the little fuel gun 21 in the second level is connected with axial swirler 7 outer ring, the little fuel gun 11 of the first order, the little fuel gun 21 in the second level and the end face of axial swirler 7 and the end face distance 100 ~ 200mm of spout 6, air door 4 is connected with burner body 3, radial swirler 5 is arranged in burner body 3 near air door 4, the air part entered by air door 4 is that direct current wind enters burner hearth, a part enters burner hearth by by radial swirler 5, a part enters burner hearth by axial swirler 7, the controllability of air is strong.
Operation principle: during work, mixed with the whole air needed for burning by primary fuel, carry out conflagration, although the concentration of oxygen is high during primary combustion, burning is carried out, at low temperatures fast so inhibit the generation of NOx, in the flue gas that secondary fuel and primary combustion generate, remaining oxygen carries out second-time burning, although second-time burning temperature is higher, because watering down of a large amount of flue gas makes oxygen concentration reduce, therefore effectively inhibit the generation of NOx.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (3)
1. a fuel-staged combustion low-NOx combustor, comprise first order fuel gun, first order fuel tank, secondary fuel rifle, the little fuel gun in the second level, burner body, adjustable damper, radial swirler, spout and axial swirler, it is characterized in that: described first order fuel gun to be arranged in burner body in the heart, and fuel level enters first order fuel gun, described first order fuel tank is arranged in the fuel tank of the second level, the little combustion gun of multiple first order is dispersed into after described first order fuel gun enters burner body, close to nozzle, axial swirler is being set, described axial swirler inner ring is connected with the little fuel gun outermost edge of the first order, described second level fuel gun and first order fuel gun layout in 90 °, the little combustion gun in multiple second level is dispersed into after described second level fuel gun enters burner body, the internal layer edge of the little fuel gun in the described second level is connected with axial swirler outer ring, described adjustable damper is connected with burner body, described radial swirler is arranged in burner body near air door place.
2. a kind of fuel-staged combustion low-NOx combustor according to claim 1, is characterized in that: the little fuel gun of the described first order, the little fuel gun in the second level and the end face of axial swirler and the end face distance 100 ~ 200mm of spout.
3. a kind of fuel-staged combustion low-NOx combustor according to claim 1, it is characterized in that: air that described air door an enters part enters burner hearth for direct current wind, a part enters burner hearth by by radial swirler, and a part enters burner hearth by axial swirler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078361.8U CN204513378U (en) | 2015-02-04 | 2015-02-04 | A kind of fuel-staged combustion low-NOx combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078361.8U CN204513378U (en) | 2015-02-04 | 2015-02-04 | A kind of fuel-staged combustion low-NOx combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204513378U true CN204513378U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520078361.8U Expired - Fee Related CN204513378U (en) | 2015-02-04 | 2015-02-04 | A kind of fuel-staged combustion low-NOx combustor |
Country Status (1)
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| CN (1) | CN204513378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627304A (en) * | 2016-01-27 | 2016-06-01 | 北京泷涛环境科技有限公司 | Strong-swirling-flow fuel staging ultra-low-nitrogen gas burner |
-
2015
- 2015-02-04 CN CN201520078361.8U patent/CN204513378U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627304A (en) * | 2016-01-27 | 2016-06-01 | 北京泷涛环境科技有限公司 | Strong-swirling-flow fuel staging ultra-low-nitrogen gas 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20200204 |