CN203980266U - Novel low NO - Google Patents
Novel low NO Download PDFInfo
- Publication number
- CN203980266U CN203980266U CN201420166677.8U CN201420166677U CN203980266U CN 203980266 U CN203980266 U CN 203980266U CN 201420166677 U CN201420166677 U CN 201420166677U CN 203980266 U CN203980266 U CN 203980266U
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- China
- Prior art keywords
- pulverized coal
- coal
- bias pulverized
- air channel
- bias
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Abstract
The utility model proposes a kind of novel low NO, relate to coal dust firing machinery equipment technical field, in order to solve the poor and higher problem of oxynitride discharge of existing coal burner combustion stability; This novel low NO comprises excessive pipe, described excessive pipe is connected with circumference joint, described circumference joint inside is provided with bias pulverized coal generator, described circumference joint is connected with air channel one time, inside, a described air channel is provided with bias pulverized coal adjuster and anti-even dividing plate successively, a described air channel end is provided with spout, is provided with flute profile bluff body in described spout; The utility model is by the mating reaction of bias pulverized coal generator, bias pulverized coal adjuster and anti-even dividing plate, make breeze airflow be divided into the breeze airflow of deep or light two kinds of variable concentrations, existence due to flute profile bluff body, utilize the heat exchange area that flute profile bluff body is larger, can improve the stability of burning.
Description
Technical field
The utility model relates to coal dust firing machinery equipment technical field, refers to especially a kind of novel low NO.
Background technology
Thermal power plant is the main flow of China's power industry and power plant for self-supply of manufacturing enterprise, and its boiler is nearly all to using coal dust as fuel; In coal, contain certain nitrogen element, at the coal dust firing initial stage, the nitrogen element in coal is combined meeting and is produced nitrogen oxide (NO with oxygen
x).The discharged nitrous oxides being generated by coal combustion has been the main source of atmosphere pollution, and it is extremely urgent that coal-burning boiler reduces discharged nitrous oxides problem, is the problem of paying attention to of having to.
Feature for environmental requirement and former coal reserves, particularly along with the minimizing of former coal reserves, ature of coal also becomes worse and worse, most of power industry and industrial coal adopt low-volatile coal more, and as meager coal and anthracite etc., their burning feature is that the content of fugitive constituent is relatively considerably less, thereby, its difficulty of catching fire, steady combustion is also difficult, and burn more difficult.
Utility model content
The utility model proposes a kind of novel low NO, solved in prior art the poor and higher problem of oxynitride discharge of coal burner combustion stability.
The technical solution of the utility model is achieved in that and comprises excessive pipe, described excessive pipe is connected with circumference joint, described circumference joint inside is provided with bias pulverized coal generator, described circumference joint is connected with air channel one time, inside, a described air channel is provided with bias pulverized coal adjuster and anti-even dividing plate successively, a described air channel end is provided with spout, is provided with flute profile bluff body in described spout.
Under the mating reaction of the utility model by bias pulverized coal generator, bias pulverized coal adjuster and anti-even dividing plate, make a breeze airflow constantly impact and collide at circumference joint end, thereby produce two strands of breeze airflows of deep or light variable concentrations, subsequently under the effect of bias pulverized coal adjuster and anti-even dividing plate, deep or light two strands of breeze airflows are carried out to separation, deep or light two strands of breeze airflows after separation all depart from generation nitrogen oxide stoichiometric ratio, therefore can reduce NO
xdischarge capacity; The existence of flute profile bluff body, can utilize the heat exchange area that flute profile bluff body is larger, improves the stability of burning.
As a kind of preferred embodiment, described bias pulverized coal generator is arranged on the end of described circumference joint inwall, and described bias pulverized coal generator inside is provided with trapezoidal anti-even block.Trapezoidal in circumference joint tail end and bias pulverized coal generator of breeze airflow prevents that even block impacts and collides, and form deep or light two strands of breeze airflows, and under the effect of follow-up bias pulverized coal adjuster and anti-even dividing plate, make the breeze airflow of two kinds of variable concentrations continue to advance along an air channel, thereby complete the two-way output of bias pulverized coal air-flow.
Operation principle: wind coal dust is about the air-flow of 0.4-0.5 kilogram and enters circumference joint in every kg air, and under the effect of bias pulverized coal generator, one time wind breeze airflow is divided into deep or light two strands of breeze airflows in circumference joint; Wherein one is high concentration pulverized coal air-flow, and it is 0.6-0.8 kilogram that the coal powder density of this high concentration pulverized coal air-flow can reach coal dust in every kg air, and this strand of air-flow is positioned to fiery side; The breeze airflow concentration of another strand is very low, between the coal powder density of this strand of breeze airflow contains coal dust 0.3-0.1 kilogram in every kg air.Therefore, these two strands dense and thin powdered coal air-flows all depart from easy generation NO
xstoichiometric ratio, this is for suppressing NO
xadvantage has been created in formation, generally can make to reduce NO
xdischarge capacity reduce 10-15%.
The beneficial effects of the utility model: under the mating reaction of the utility model by bias pulverized coal generator, bias pulverized coal adjuster and anti-even dividing plate, make a breeze airflow constantly impact and collide at circumference joint end, thereby produce two strands of breeze airflows of deep or light variable concentrations, subsequently under the effect of anti-even dividing plate, deep or light two strands of breeze airflows are carried out to separation, deep or light two strands of breeze airflows after separation all depart from generation nitrogen oxide stoichiometric ratio, therefore can reduce NO
xdischarge capacity.Thick coal culm air-flow and thin powdered coal air-flow spray into burner hearth by spout, and the raising of coal powder density can reduce the temperature of catching fire, and reduce ignition heat, and flame propagation velocity is accelerated, and are conducive to igniting and steady combustion; Under the effect of the high temperature reflux flue gas producing at burner nozzle inner tooth type bluff body, after thick coal culm air-flow catches fire rapidly, light thin powdered coal air-flow, realize the burning of bias pulverized coal steady air current.This novel low NO is applicable to all coal pulverizers and pulverized coal preparation system thereof.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the planar structure schematic diagram of an embodiment of the utility model;
Fig. 2 be Fig. 1 B-B to sectional structure schematic diagram;
Fig. 3 is the right TV structure schematic diagram of Fig. 1;
In figure: 1-excessively manages; 2-has an area of joint; 3-bias pulverized coal generator; 4-bias pulverized coal adjuster; 5-prevents even dividing plate; 6-spout; Air channel of 7-; 8-bluff body; 9-surely fires tooth.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Consult accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, the utility model comprises excessive pipe 1, described excessive pipe 1 is connected with circumference joint 2, described circumference saves 2 inside and is provided with bias pulverized coal generator 3, described circumference joint 2 is connected with air channel 7 one time, 7 inside, a described air channel are provided with bias pulverized coal adjuster 4 and anti-even dividing plate 5 successively, and described air channel 7 ends are provided with spout 6, in described spout 6, are provided with flute profile bluff body 8.
Excessively being connected of coal dust wind pipeline and this burner is convenient in the design of pipe 1, it connected tight, good airproof performance; Described bias pulverized coal generator 3 is arranged on the end that described circumference saves 2 inwalls, and described bias pulverized coal generator 3 inside are provided with trapezoidal anti-even block; Breeze airflow enters circumference joint 2 by excessively managing 1, and the impact of the trapezoidal anti-even block in the bias pulverized coal generator 3 in circumference joint 2 with under collision effect, carry out deep or light separated; Bias pulverized coal air-flow after separation moves on along a wind passage 7, and under the effect of bias pulverized coal adjuster 4, further regulate the concentration of bias pulverized coal air-flow, the setting of bias pulverized coal adjuster 4 makes the deep or light adjusting of bias pulverized coal air-flow easy, is convenient to timely control; Through separated bias pulverized coal air-flow, through anti-even dividing plate 5, realize the output of bias pulverized coal air-flow, thereby really complete the separation of bias pulverized coal air-flow; Bias pulverized coal air-flow after separation enters burner hearth through spout 6 and steady combustion tooth 9, and the high temperature reflux flue gas that the flute profile bluff body 8 of spout 6 interior settings produces, after can making thick coal culm air-flow catch fire rapidly, lights thin powdered coal air-flow, realizes deep or light smooth combustion.
Operation principle: wind coal dust is about the air-flow of 0.4-0.5 kilogram and enters circumference joint 2 in every kg air, and under the effect of circumference joint 2 interior bias pulverized coal generators 3, one time wind breeze airflow is divided into deep or light two strands of breeze airflows; Wherein one is high concentration pulverized coal air-flow, and the coal powder density of this high concentration pulverized coal air-flow can reach in every kg air and contain coal dust 0.6-0.8 kilogram, and this strand of air-flow is positioned to fiery side; The breeze airflow concentration of another strand is very low, and the coal powder density of this strand of breeze airflow is between every kg air is containing coal dust 0.3-0.1 kilogram.Therefore, these two strands dense and thin powdered coal air-flows all depart from easy generation NO
xstoichiometric ratio, this is for suppressing NO
xadvantage has been created in formation, generally can make to reduce NO
xdischarge capacity reduce 10-15%.
The beneficial effects of the utility model: under the mating reaction of the utility model by bias pulverized coal generator 3, bias pulverized coal adjuster 4 and anti-even dividing plate 5, make a breeze airflow constantly impact and collide at circumference joint 2 ends, thereby produce two strands of breeze airflows of deep or light variable concentrations, subsequently under the effect of bias pulverized coal adjuster 4 and anti-even dividing plate 5, deep or light two strands of breeze airflows are carried out to separation, deep or light two strands of breeze airflows after separation all depart from generation nitrogen oxide stoichiometric ratio, therefore can reduce NO
xdischarge capacity.Thick coal culm air-flow and thin powdered coal air-flow spray into burner hearth by spout 6, due to the raising of coal powder density, can reduce the temperature of catching fire, and reduce ignition heat, and flame propagation velocity is accelerated, and are conducive to igniting and steady combustion; Under the effect of the high temperature reflux flue gas producing at burner nozzle 6 inner tooth type bluff bodies 8, after thick coal culm air-flow catches fire rapidly, light thin powdered coal air-flow, realize coal dust smooth combustion.This novel low NO is applicable to all coal pulverizers and pulverized coal preparation system thereof.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (1)
1. a novel low NO, is characterized in that: comprise excessive pipe,
Described excessive pipe is connected with circumference joint, described circumference joint inside is provided with bias pulverized coal generator, described circumference joint is connected with air channel one time, inside, a described air channel is provided with bias pulverized coal adjuster and anti-even dividing plate successively, a described air channel end is provided with spout, is provided with flute profile bluff body in described spout;
Described bias pulverized coal generator is arranged on the end of described circumference joint inwall, and described bias pulverized coal generator inside is provided with trapezoidal anti-even block, and described anti-even dividing plate is arranged on a side of a described air channel axis obliquely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166677.8U CN203980266U (en) | 2014-04-08 | 2014-04-08 | Novel low NO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166677.8U CN203980266U (en) | 2014-04-08 | 2014-04-08 | Novel low NO |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203980266U true CN203980266U (en) | 2014-12-03 |
Family
ID=51977700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420166677.8U Expired - Fee Related CN203980266U (en) | 2014-04-08 | 2014-04-08 | Novel low NO |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203980266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036310A (en) * | 2018-01-05 | 2018-05-15 | 湖南大唐节能科技有限公司 | Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner |
-
2014
- 2014-04-08 CN CN201420166677.8U patent/CN203980266U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036310A (en) * | 2018-01-05 | 2018-05-15 | 湖南大唐节能科技有限公司 | Horizontal bias abnormity separation lower resistance low nitrogen nitride coal 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: 20141203 Termination date: 20150408 |
|
| EXPY | Termination of patent right or utility model |