CN103017149A - Pulverized coal combustion apparatus - Google Patents
Pulverized coal combustion apparatus Download PDFInfo
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- CN103017149A CN103017149A CN2012105811668A CN201210581166A CN103017149A CN 103017149 A CN103017149 A CN 103017149A CN 2012105811668 A CN2012105811668 A CN 2012105811668A CN 201210581166 A CN201210581166 A CN 201210581166A CN 103017149 A CN103017149 A CN 103017149A
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Abstract
The invention discloses a pulverized coal combustion apparatus. The problem of limitation of the combustion efficiency and low-load stable combustion characteristic due to the simple structure in the prior art is solved. The pulverized coal combustion apparatus comprises a first combustor, a first inlet and a first outlet, at least one first flow guide vane, at least one nozzle, a second combustor a second inlet and a second outlet, and at least one second flow guide vane; the first combustor comprises a first shell; a first pulverized coal nozzle and a second pulverized coal nozzle are arranged on the first outlet in parallel; the first flow guide vane is arranged in the first shell; the second combustor is arranged under the nozzle and provided with a second shell; a third pulverized coal nozzle and a fourth pulverized coal nozzle are arranged on the second outlet in parallel; and the second floe guide vane is arranged in the second shell. The pulverized coal combustion apparatus can effectively control NOx emission, supplies enough oxygen for the subsequent combustion of the pulverized coal at the same time and enhances the combustion efficiency.
Description
Technical field
The present invention relates to the burner field, refer to especially a kind of coal powder burner.
Background technology
At present, China is the big country that the world today produced and used Industrial Boiler, and within the following quite a long time, coal-burned industrial boiler will be the leading products of China, coal powder burner of the prior art is simple in structure, and this improves although carried out too much, and efficiency of combustion and low-load combustion-stabilizing characteristic have certain limitation, so need a kind of novel burner, solve problems of the prior art.
Summary of the invention
The present invention proposes a kind of coal powder burner, has solved in the prior art because simple in structure, causes efficiency of combustion and low-load combustion-stabilizing characteristic to have circumscribed problem.
Technical scheme of the present invention is achieved in that
A kind of coal powder burner comprises:
The first burner comprises the first housing; The first import is arranged on the first housing one end; First exports, and is arranged on the other end of the first housing; Be set side by side with the first coal nozzle and the second coal nozzle in the first outlet; Be used for wind powder mixture is divided into concentrated phase and light mutually at least one the first guide vane, be arranged in the first housing;
At least one nozzle is arranged on the first burner below;
The second burner is arranged on described nozzle below, comprises the second housing; The second import is arranged on the second housing one end; Second exports, and is arranged on the other end of the second housing; Be set side by side with the 3rd coal nozzle and the 4th coal nozzle in the second outlet; Be used for wind powder mixture is divided into concentrated phase and light mutually at least one the second guide vane, be arranged in the second housing.
Preferably, also comprise: smooth combustion apparatus is arranged on nozzle one end.
Preferably, also comprise: be used for the pressure reduction pressure of balance positive and negative, eliminate the balance pipe of vortex, be separately positioned on the first guide vane and the second guide vane.
Preferably, nozzle is specially air nozzle and/or oil burner nozzle.
Preferably, nozzle is specially at least one air nozzle and/or at least one oil burner nozzle.
Preferably, the first coal nozzle is specially the thin powdered coal nozzle; The second coal nozzle is specially the thick coal culm nozzle.
Preferably, the 3rd coal nozzle is specially the thick coal culm nozzle; The 4th coal nozzle is specially the thin powdered coal nozzle.
Technical solution of the present invention is by arranging the first guide vane and the mode of the second guide vane being set in the second housing in the first housing, the wind powder mixture that enters the first housing or the second housing can be divided into light phase and concentrated phase, namely the light relatively many high temperature combustion zones of coal dust in the boiler that are discharged to mutually burn; Concentrated phase is discharged in the boiler the relatively less low-temperature burning zone of coal dust and burns, and can effectively control the NOx discharging by such setting, and the subsequent combustion for coal dust provides sufficient oxygen amount simultaneously, improves efficiency of combustion.
In addition, by the setting of balance pipe, can balance the first guide vane or the pressure reduction pressure of the second guide vane positive and negative, eliminate the vortex at the first guide vane or the second guide vane back side, reach the needed dense phase pulverized coal concentration of burning, and then reduce the resistance of burner.
Beneficial effect of the present invention:
1, when breeze airflow passes through the first guide vane or the second guide vane, for avoiding larger vortex occurring at the first guide vane or the second guide vane back side, thereby produce very large resistance, by the balance pipe that arranges, but the pressure reduction of active balance leave dual sides, thereby the vortex of effectively eliminating vacuum side of blade, the deep or light two-phase air quantity of balance is substantially equal, reach the needed dense phase pulverized coal concentration of burning, and reduce the resistance of burner;
2, can effectively regulate combustion flame in position and the intensity of burner hearth, guarantee the fuel-rich combustion in early stage that burns, burning middle and later periods aftercombustion requisite oxygen amount has the efficiency of combustion of raising, reduces nitrogen oxide generation, combustion stability good result.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the planar structure schematic diagram of a kind of coal powder burner of the present invention.
Among the figure:
1, the first housing; 2, the first import; 3, the first outlet; 4, the first coal nozzle; 5, the second coal nozzle; 6, the first guide vane; 7, nozzle; 8, the second housing; 9, the second import; 10, the second outlet; 11, the 3rd coal nozzle; 12, the 4th coal nozzle; 13, the second guide vane; 14, balance pipe.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, a kind of coal powder burner of the present invention comprises:
The first burner comprises the first housing 1; The first import 2 is arranged on the first housing 1 one ends; First exports 3, is arranged on the other end of the first housing 1; Be set side by side with the first coal nozzle 4 and the second coal nozzle 5 in the first outlet 3; Be used for wind powder mixture is divided into concentrated phase and light mutually at least one the first guide vane 6, be arranged in the first housing 1;
At least one nozzle 7 is arranged on the first burner below;
The second burner is arranged on described nozzle below, comprises the second housing 8; The second import 9 is arranged on the second housing 8 one ends; Second exports 10, is arranged on the other end of the second housing 8; Be set side by side with the 3rd coal nozzle 11 and the 4th coal nozzle 12 in the second outlet 10; Be used for wind powder mixture is divided into concentrated phase and light mutually at least one the second guide vane 13, be arranged in the second housing 8.
By the first guide vane 6 being set and in the second housing 8 interior modes that the second guide vane 13 is set in that the first housing 1 is interior, the wind powder mixture that enters the first housing 1 or the second housing 8 can be divided into light phase and concentrated phase, namely the light relatively many high temperature combustion zones of coal dust in the boiler that are discharged to mutually burn; Concentrated phase is discharged in the boiler the relatively less low-temperature burning zone of coal dust and burns, and can effectively control the NOx discharging by such setting, and the subsequent combustion for coal dust provides sufficient oxygen amount simultaneously, improves efficiency of combustion.
Coal powder burner of the present invention comprises the first burner, nozzle 7 and the second burner, and wherein the first burner comprises: the first housing 1 is respectively arranged with the first import 2 and the first outlet 3 at the two ends of the first housing 1; Be set side by side with the first coal nozzle 4 and the second coal nozzle 5 in the first outlet 3, preferred the first pulverized coal injection is specially the thin powdered coal nozzle among the present invention; The second coal nozzle 5 is specially the thick coal culm nozzle, discharges thin powdered coal in boiler by the first coal nozzle 4, discharges thick coal culm in boiler by the second coal nozzle 5; The first guide vane 6 is arranged in the first housing 1, by the first guide vane 6 wind powder mixture is divided into concentrated phase with mutually light, and has respectively the first coal nozzle 4 and the second coal nozzle 5 to be discharged in the boiler; Nozzle is arranged on the first burner below, jointly realizes controlling the NOx discharging with the first burner and the second burner, and the subsequent combustion for coal dust provides sufficient oxygen amount simultaneously, improves efficiency of combustion; Other the second burner comprises: the second housing 8, be separately positioned on the second import 9 and second outlet 10 at the second housing 8 two ends, and in the second outlet 10, also be set side by side with the 3rd coal nozzle 11 and the 4th coal nozzle 12, the 3rd coal nozzle 11 is specially the thick coal culm nozzle in the present invention, the 4th coal nozzle 12 is specially the thin powdered coal nozzle, discharge thick coal culm in boiler by the 3rd coal nozzle 11, discharge thin powdered coal in boiler by the 4th coal nozzle 12, namely the first burner and the second burner have formed light dense light nozzle mode in the present invention, such combination can be controlled the low emission of Nox, the raising of efficiency of combustion and low-load combustion-stabilizing property enhancement; In the second housing 8, also be provided with the second guide vane 13, by the second guide vane 13 wind powder mixture be divided into concentrated phase with mutually light, and have respectively the 3rd coal nozzle 11 and the 4th coal nozzle 12 to be discharged in the boiler; Can cooperate second guide vane 13 for first guide vane 6 among the present invention, also can cooperate a plurality of the second guide vanes 13 for first guide vane 6, or a plurality of the first guide vanes 6 cooperate second guide vane 13, concrete number is different and different according to operating position with combination, for saving space, among the present invention this is not given unnecessary details.
Preferably, also comprise: smooth combustion apparatus is arranged on nozzle 7 one ends.
End at nozzle 7 among the present invention is provided with smooth combustion apparatus, can catch fire in the process that wind powder mixture is discharged by smooth combustion apparatus, and then the generation of NOx is controlled, and namely suppresses the generation of NOx.
Preferably, also comprise: be used for the pressure reduction pressure of balance positive and negative, eliminate the balance pipe 14 of vortex, be separately positioned on the first guide vane 6 and the second guide vane 13.
When breeze airflow passes through the first guide vane 6 or the second guide vane 13, for avoiding at the first guide vane 6 or the second guide vane 13 back sides being that larger vortex appears in light meeting, thereby produce very large resistance, at the first guide vane 6 balance pipe 14 is set among the present invention, on the second guide vane 13, balance pipe 14 is set equally also, by balance pipe 14, but the pressure reduction of active balance the first guide vane 6 and the second guide vane 13 positive and negatives, thereby effectively eliminate the vortex at the first guide vane 6 and the second guide vane 13 back sides, the deep or light two-phase air quantity of balance is substantially equal, reach the needed dense phase pulverized coal concentration of burning, and then avoid the resistance in the first housing 1 and the second housing 8 to produce.
Preferably, nozzle 7 is specially air nozzle and/or oil burner nozzle.
Preferably, nozzle 7 is specially at least one air nozzle and/or at least one oil burner nozzle.
Nozzle 7 specifically can be air nozzle or oil burner nozzle among the present invention, it can certainly be the modular design of air nozzle and oil burner nozzle, and concrete can be that an air nozzle cooperates an oil burner nozzle, or a plurality of air nozzles cooperate oil burner nozzle, or an air nozzle cooperates a plurality of oil burner nozzles, concrete condition is decided according to the user demand of reality, and the present invention is not giving unnecessary details again one by one for saving space.
Preferably, the first coal nozzle 4 is specially thin powdered coal nozzle 7; The second coal nozzle 5 is specially thick coal culm nozzle 7.
Preferably, the 3rd coal nozzle 11 is specially the thick coal culm nozzle; The 4th coal nozzle 12 is specially the thin powdered coal nozzle.
Beneficial effect of the present invention:
1, when breeze airflow passes through the first guide vane 6 or the second guide vane 13, for avoiding larger vortex occurring at the first guide vane 6 or the second guide vane 13 back sides, thereby produce very large resistance, by the balance pipe 14 that arranges, but the pressure reduction of active balance leave dual sides, thereby the vortex of effectively eliminating vacuum side of blade, the deep or light two-phase air quantity of balance is substantially equal, reach the needed dense phase pulverized coal concentration of burning, and reduce the resistance of burner;
2, can effectively regulate combustion flame in position and the intensity of burner hearth, guarantee the fuel-rich combustion in early stage that burns, burning middle and later periods aftercombustion requisite oxygen amount has the efficiency of combustion of raising, reduces nitrogen oxide generation, combustion stability good result.
Below only be preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a coal powder burner is characterized in that, comprising:
The first burner comprises the first housing; The first import is arranged on described the first housing one end; First exports, and is arranged on the other end of described the first housing; Be set side by side with the first coal nozzle and the second coal nozzle in described the first outlet; Be used for wind powder mixture is divided into concentrated phase and light mutually at least one the first guide vane, be arranged in described the first housing;
At least one nozzle is arranged on described the first burner below;
The second burner is arranged on described nozzle below, comprises the second housing; The second import is arranged on described the second housing one end; Second exports, and is arranged on the other end of described the second housing; Be set side by side with the 3rd coal nozzle and the 4th coal nozzle in described the second outlet; Be used for wind powder mixture is divided into concentrated phase and light mutually at least one the second guide vane, be arranged in described the second housing.
2. coal powder burner as claimed in claim 1 is characterized in that, also comprises: smooth combustion apparatus is arranged on described nozzle one end.
3. coal powder burner as claimed in claim 1 or 2 is characterized in that, also comprises: be used for the pressure reduction pressure of balance positive and negative, eliminate the balance pipe of vortex, be separately positioned on the first guide vane and the second guide vane.
4. coal powder burner as claimed in claim 3 is characterized in that, described nozzle is specially air nozzle and/or oil burner nozzle.
5. coal powder burner as claimed in claim 4 is characterized in that, described nozzle is specially at least one air nozzle and/or at least one oil burner nozzle.
6. coal powder burner as claimed in claim 5 is characterized in that, described the first coal nozzle is specially the thin powdered coal nozzle; Described the second coal nozzle is specially the thick coal culm nozzle.
7. coal powder burner as claimed in claim 6 is characterized in that, described the 3rd coal nozzle is specially the thick coal culm nozzle; Described the 4th coal nozzle is specially the thin powdered coal nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105811668A CN103017149A (en) | 2012-12-28 | 2012-12-28 | Pulverized coal combustion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105811668A CN103017149A (en) | 2012-12-28 | 2012-12-28 | Pulverized coal combustion apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN103017149A true CN103017149A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105811668A Pending CN103017149A (en) | 2012-12-28 | 2012-12-28 | Pulverized coal combustion apparatus |
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| CN (1) | CN103017149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520709A (en) * | 2020-04-10 | 2020-08-11 | 王德志 | Novel direct-current pulverized coal burner capable of stabilizing flame |
Citations (9)
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| CN2335011Y (en) * | 1998-06-22 | 1999-08-25 | 机械工业部哈尔滨电站设备成套设计研究所 | Dense/thin combined coal powder burner |
| CN1587798A (en) * | 2004-07-07 | 2005-03-02 | 杨爱生 | Keeping secondary wind speed stable combustion technology when boiler at low load |
| CN2705711Y (en) * | 2004-01-12 | 2005-06-22 | 自贡东方锅炉科技开发有限公司 | Coal powder concentrator using hill and open blade |
| CN2844679Y (en) * | 2005-11-11 | 2006-12-06 | 成庆刚 | Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner |
| CN200975674Y (en) * | 2006-08-29 | 2007-11-14 | 上海理工大学 | Gas recombustion and two-channel Thick-light integrated type low NOx Combusting device |
| CN201066133Y (en) * | 2007-06-18 | 2008-05-28 | 中节环(北京)科技有限公司 | Low resistance horizontal rich-lean pulverized coal burner for ignition |
| CN201547785U (en) * | 2009-12-03 | 2010-08-11 | 成庆刚 | Oil-saving and stable combustion pulverized coal burner with low NOx emission |
| CN201615479U (en) * | 2009-12-15 | 2010-10-27 | 李朝阳 | Combined vertical rich-lean pulverized coal concentration device |
| CN201615487U (en) * | 2009-12-15 | 2010-10-27 | 李朝阳 | Combined vertical dense-dilute low-NOx direct flow pulverized coal burner |
-
2012
- 2012-12-28 CN CN2012105811668A patent/CN103017149A/en active Pending
Patent Citations (9)
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| CN2335011Y (en) * | 1998-06-22 | 1999-08-25 | 机械工业部哈尔滨电站设备成套设计研究所 | Dense/thin combined coal powder burner |
| CN2705711Y (en) * | 2004-01-12 | 2005-06-22 | 自贡东方锅炉科技开发有限公司 | Coal powder concentrator using hill and open blade |
| CN1587798A (en) * | 2004-07-07 | 2005-03-02 | 杨爱生 | Keeping secondary wind speed stable combustion technology when boiler at low load |
| CN2844679Y (en) * | 2005-11-11 | 2006-12-06 | 成庆刚 | Deep Or Light And Hot Reflux Two-way Smooth Burning Powdered-coal Burner |
| CN200975674Y (en) * | 2006-08-29 | 2007-11-14 | 上海理工大学 | Gas recombustion and two-channel Thick-light integrated type low NOx Combusting device |
| CN201066133Y (en) * | 2007-06-18 | 2008-05-28 | 中节环(北京)科技有限公司 | Low resistance horizontal rich-lean pulverized coal burner for ignition |
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| CN201615479U (en) * | 2009-12-15 | 2010-10-27 | 李朝阳 | Combined vertical rich-lean pulverized coal concentration device |
| CN201615487U (en) * | 2009-12-15 | 2010-10-27 | 李朝阳 | Combined vertical dense-dilute low-NOx direct flow pulverized coal burner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520709A (en) * | 2020-04-10 | 2020-08-11 | 王德志 | Novel direct-current pulverized coal burner capable of stabilizing flame |
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Application publication date: 20130403 |