CN103017159A - Vertical rich-lean pulverized coal concentration device - Google Patents
Vertical rich-lean pulverized coal concentration device Download PDFInfo
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- CN103017159A CN103017159A CN2012105768719A CN201210576871A CN103017159A CN 103017159 A CN103017159 A CN 103017159A CN 2012105768719 A CN2012105768719 A CN 2012105768719A CN 201210576871 A CN201210576871 A CN 201210576871A CN 103017159 A CN103017159 A CN 103017159A
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- guide vane
- housing
- pulverized coal
- concentration device
- horizontal plane
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Abstract
The invention provides a vertical rich-lean pulverized coal concentration device which is used for solving the problems of low combustion efficiency and poor combustion stability in the prior art. The vertical rich-lean pulverized coal concentration device comprises a first shell, a second shell, a first distribution plate, a second distribution plate, a first inlet, a first outlet, a first guide vane group, a second inlet, a second outlet and a second guide vane group, wherein the first guide vane group comprises a first guide vane, a second guide vane, a third guide vane and a fourth guide vane, and balance holes are respectively formed in one ends of the second guide vane, the third guide vane and the fourth guide vane; and the second guide vane group comprises a fifth guide vane, a sixth guide vane, a seventh guide vane and an eighth guide vane, and balance holes are respectively formed in one ends of the fifth guide vane, the sixth guide vane, the seventh guide vane and the eighth guide vane. The vertical rich-lean pulverized coal concentration device has the effects of increasing the combustion efficiency, reducing nitrogen oxides generation and obtaining good combustion stability.
Description
Technical field
The present invention relates to Pulverized Coal Concentration device territory, refer to especially a kind of vertical strong/weak coal powder burner of the boiler for thermal power generation.
Background technology
The pulverized-coal fired boiler that is used for thermal power generation generally is provided with pulverized coal concentrator, pulverized coal concentrator generally has two kinds, a kind of is the vertical rich-lean pulverized coal concentration device, its bias pulverized coal is to arrange vertically, it is applicable to up and down concentration coal burner arranged vertically, another kind is the horizontal bias pulverized coal concentrator, and its bias pulverized coal is that horizontal parallel is arranged, and it is applicable to the concentration coal burner that horizontal parallel is arranged.At present, be used for using more extensive at the boiler vertical strong/weak coal powder burner of thermal power generation, usually adopt elbow type inertial separation principle, utilize pulverized coal particle different from the inertia of the air stream of pulverized coal conveying, and reaching the purpose that makes Pulverized Coal Concentration, the crooked blade in the coal nozzle body of the deep or light two-phase breeze airflow after concentrating is directed to respectively the corresponding deep or light phase nozzle of coal nozzle; Long-term use is learnt, can't be guaranteed burning fuel-rich combustion in early stage, therefore burning middle and later periods aftercombustion requisite oxygen amount can not effectively regulate combustion flame in position and the intensity of burner hearth, so that efficiency of combustion is low, poor combustion stability.
Summary of the invention
The present invention proposes a kind of vertical rich-lean pulverized coal concentration device, has solved can not effectively regulate combustion flame in the prior art in position and the intensity of burner hearth, so that efficiency of combustion is low, the problem of poor combustion stability.
Technical scheme of the present invention is achieved in that
A kind of vertical rich-lean pulverized coal concentration device comprises:
The first housing and the second housing;
The first flow distribution plate is arranged on the first housing one end; The second flow distribution plate is arranged on the second housing one end;
Be used for making concentrating the first import that front breeze airflow enters the first housing, be arranged on the first housing one end;
Be used for making breeze airflow after concentrated to discharge the first outlet of the first housing, be arranged on the other end of the first housing;
Be used for regulating combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, the first guide vane group of burning middle and later periods aftercombustion requisite oxygen amount, be arranged in the first housing, comprise the first guide vane, the second guide vane, the 3rd guide vane and the 4th guide vane, and be provided with balance pipe at an end of the second guide vane, the 3rd guide vane and the 4th guide vane;
Be used for making concentrating the second import that front breeze airflow enters the second housing, be arranged on the second housing one end;
Be used for making breeze airflow after concentrated to discharge the second outlet of the second housing, be arranged on the other end of the second housing;
Be used for regulating combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, the second guide vane group of burning middle and later periods aftercombustion requisite oxygen amount, be arranged in the second housing, comprise the 5th guide vane, the 6th guide vane, the 7th guide vane and the 8th guide vane, and be provided with balance pipe at an end of the 5th guide vane the 6th guide vane, the 7th guide vane and the 8th guide vane.
Preferably, the 4th guide vane, the 3rd guide vane, the second guide vane and the first guide vane export to the first importer to arranging from low to high by first.
Preferably, the angle of the first guide vane and horizontal plane is 20 °～50 °; The angle of the second guide vane and horizontal plane is 20 °～50 °; The angle of the 3rd guide vane and horizontal plane is 20 °～50 °; The angle of the 4th guide vane and horizontal plane is 20 °～50 °.
Preferably, the 8th guide vane, the 7th guide vane, the 6th guide vane and the 5th guide vane export to the second importer to arranging from high to low by second.
Preferably, the angle of the 5th guide vane and horizontal plane is 130 °～160 °; The angle of the 6th guide vane and horizontal plane is 130 °～160 °; The angle of the 7th guide vane and horizontal plane is 130 °～160 °; The angle of the 8th guide vane and horizontal plane is 130 °～160 °.
Preferably, the first guide vane one end is connected with the inner surface of the first housing.
Preferably, an end of the 5th guide vane is connected with the inner surface of the second housing; And the bottom of the 5th guide vane and housing is provided with the interval.
Preferably, balance pipe is specially circular port.
Preferably, balance pipe is specially square opening.
Technical solution of the present invention can effectively be regulated combustion flame in position and the intensity of burner hearth by at the second guide vane, the 3rd guide vane, the 4th guide vane, the 5th guide vane, the 6th guide vane, the 7th guide vane and the 8th guide vane balance pipe being set respectively, guarantee burning fuel-rich combustion in early stage, burning middle and later periods aftercombustion requisite oxygen amount has the efficiency of combustion of raising, reduces nitrogen oxide generation, the good effect of combustion stability.
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 structural representation of a kind of vertical rich-lean pulverized coal concentration device of the present invention.
Among the figure:
1, the first housing; 2, the second housing; 3, the first flow distribution plate; 4, the second flow distribution plate; 5, the first import; 6, the first outlet; 7, the first guide vane; 8, the second guide vane; 9, the 3rd guide vane; 10, the 4th guide vane; 11, balance pipe; 12, the second import; 13, the second outlet; 14, the 5th guide vane; 15, the 6th guide vane; 16, the 7th guide vane; 17 the 8th guide vanes.
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 vertical rich-lean pulverized coal concentration device of the present invention comprises:
The first housing 1 and the second housing 2;
The first flow distribution plate 3 is arranged on the first housing 1 one ends; The second flow distribution plate 4 is arranged on the second housing 2 one ends;
Be used for making concentrating the first import 5 that front breeze airflow enters the first housing 1, be arranged on the first housing 1 one ends;
Be used for making breeze airflow after concentrated to discharge the first outlet 6 of the first housing 1, be arranged on the other end of the first housing 1;
Be used for regulating combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, the first guide vane group of burning middle and later periods aftercombustion requisite oxygen amount, be arranged in the first housing 1, comprise the first guide vane 7, the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10, and be provided with balance pipe 11 at an end of the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10;
Be used for making concentrating the second import 12 that front breeze airflow enters the second housing 2, be arranged on the second housing 2 one ends;
Be used for making breeze airflow after concentrated to discharge the second outlet 13 of the second housing 2, be arranged on the other end of the second housing 2;
Be used for regulating combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, the second guide vane group of burning middle and later periods aftercombustion requisite oxygen amount, be arranged in the second housing 2, comprise the 5th guide vane 14, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17, and be provided with balance pipe 11 at an end of the 5th guide vane 14 the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17.
Can effectively regulate combustion flame in position and the intensity of burner hearth by at the second guide vane 8, the 3rd guide vane 9, the 4th guide vane 10, the 5th guide vane 14, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17 balance pipe 11 being set respectively, guarantee burning fuel-rich combustion in early stage, burning middle and later periods aftercombustion requisite oxygen amount has the efficiency of combustion of raising, reduces nitrogen oxide generation, the good effect of combustion stability.
Wherein, the first housing 1 two ends are respectively arranged with the first import 5 and the first outlet 6, by the first import 5 breeze airflow of concentrated money are entered in the first housing 1, by the first outlet 6 breeze airflow after concentrating are discharged; Be provided with the first guide vane group in the housing, and the first guide vane group comprises the first guide vane 7, the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10, and the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10 are provided with balance pipe 11, by the first guide vane 7, the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10 are regulated combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, burning middle and later periods aftercombustion requisite oxygen amount, balance pipe 11 is specially pressure compensation opening 11, at the second guide vane 8, in the process of the 3rd guide vane 9 and the 4th guide vane 10 regulating stove chamber inner combustion flames, the control breeze airflow is to the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10 applied pressures guarantee the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10 are not caused distortion by the pressure of breeze airflow; The first flow distribution plate 3 is arranged on the first outlet 6 ends, like this, the first outlet 6 is divided into two parts carries out the gas discharge, and namely top is divided into light coal gas outlet, and the bottom is divided into dense coal gas outlet.
The second housing 2 two ends are respectively arranged with the second import 12 and the second outlet 13, by the second import 12 breeze airflow of concentrated money are entered in the second housing 2, by the second outlet 13 breeze airflow after concentrating are discharged; Be provided with the second guide vane group in the housing, and the second guide vane group comprises the 5th guide vane 14, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17, and five guide vanes, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17 are provided with balance pipe 11, by five guide vanes, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17 are regulated combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, burning middle and later periods aftercombustion requisite oxygen amount, balance pipe 11 is specially pressure compensation opening 11, at five guide vanes, the 6th guide vane 15, in the process of the 7th guide vane 16 and the 8th guide vane 17 regulating stove chamber inner combustion flames, the control breeze airflow is to five guide vanes, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17 applied pressures guarantee five guide vanes, the 6th guide vane 15, the 7th guide vane 16 and the 8th guide vane 17 are not caused distortion by the pressure of breeze airflow; The second flow distribution plate 4 is arranged on the second outlet 13 ends, like this, the second outlet 13 is divided into two parts carries out the gas discharge, and namely top is divided into dense coal gas outlet, and the bottom is divided into light coal gas outlet.
Preferred in the present invention, the 4th guide vane 10, the 3rd guide vane 9, the second guide vane 8 and the first guide vane 7 are arranged to the first import 5 directions from low to high by the first outlet 6.
Preferably, the first guide vane 7 is 20 °～50 ° with the angle of horizontal plane; The second guide vane 8 is 20 °～50 ° with the angle of horizontal plane; The 3rd guide vane 9 is 20 °～50 ° with the angle of horizontal plane; The 4th guide vane 10 is 20 °～50 ° with the angle of horizontal plane.
An embodiment among the present invention, the 4th guide vane 10, the 3rd guide vane 9, the second guide vane 8 and the first guide vane 7 are exported the 6 direction settings from low to high to the first import 5 by first, and in the time of by such setting, the 4th guide vane 10 is 20 °～50 ° with the angle of horizontal plane, be specially 30 ° in the present embodiment, the 3rd guide vane 9 is 20 °～50 ° with the angle of horizontal plane, is specially 30 ° in the present embodiment; The second guide vane 8 is 20 °～50 ° with the angle of horizontal plane, is specially 30 ° in the present embodiment; The first guide vane 7 is 20 °～50 ° with the angle of horizontal plane, is specially 30 ° in the present embodiment; By such setting, the thick coal culm air-flow better can be separated with the thin powdered coal air-flow, and then improve the stability of combustion rate and burning.
Preferred among the present invention, the 8th guide vane 17, the 7th guide vane 16, the 6th guide vane 15 and the 5th guide vane 14 are arranged to the second import 12 directions from high to low by the second outlet 13.
Preferably, the 5th guide vane 14 is 130 °～160 ° with the angle of horizontal plane; The 6th guide vane 15 is 130 °～160 ° with the angle of horizontal plane; The 7th guide vane 16 is 130 °～160 ° with the angle of horizontal plane; The 8th guide vane 17 is 130 °～160 ° with the angle of horizontal plane.
Another embodiment among the present invention, the 8th guide vane 17, the 7th guide vane 16, the 6th guide vane 15 and the 5th guide vane 14 are exported the 13 direction settings from high to low to the second import 12 by second, and in the time of by such setting, the 8th guide vane 17 is 130 °～160 ° with the angle of horizontal plane, be specially 150 ° in the present embodiment, the 7th guide vane 16 is 130 °～160 ° with the angle of horizontal plane, is specially 150 ° in the present embodiment; The 6th guide vane 15 is 130 °～160 ° with the angle of horizontal plane, is specially 150 ° in the present embodiment; The 5th guide vane 14 is 130 °～160 ° with the angle of horizontal plane, is specially 150 ° in the present embodiment; By such setting, can further the thick coal culm air-flow better be separated with the thin powdered coal air-flow, and then with the first guide vane 7, the second guide vane 8, the 3rd guide vane 9 and the 4th guide vane 10, improved the stability of combustion rate and burning.
Preferably, the first guide vane 7 one ends are connected with the inner surface of the first housing 1.
Preferably, an end of the 5th guide vane 14 is connected with the inner surface of the second housing 2; And the 5th guide vane 14 is provided with the interval with the bottom of housing.
In the present invention in one embodiment, one end of the first guide vane 7 is connected with the inner surface of the first housing 1, namely the first guide vane 7 is connected with the first housing 1 inner surface of the first import 5 ends, by such design, can guarantee that in the process that breeze airflow enters the first guide vane 7 guarantees that when changing the breeze airflow direction the first guide vane 7 can firmly fix, avoid causing because breeze airflow is excessive 7 sex change of the first guide vane; One end of the 5th guide vane 14 is connected with the inner surface of the second housing 2, namely be connected with your surface of the second housing 2 of the second import 12, and the bottom with the second housing 2 after the 5th guide vane 14 connects is provided with the interval, can guarantee that by such setting breeze airflow can have enough throughputs to enter into by the interval in the second housing 2 when changing approach axis.
Preferably, balance pipe 11 is specially circular port.
Preferably, balance pipe 11 is specially square opening.
Among the again embodiment among the present invention; preferably balance pipe 11 is set to circular port or square opening; the operating position that concrete basis is concrete is decided, and only provides preferred embodiment among the present invention, and other can realize equally that other shape holes among the present invention all belong to protection scope of the present invention.
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 (9)
1. a vertical rich-lean pulverized coal concentration device is characterized in that, comprising:
The first housing (1) and the second housing (2);
The first flow distribution plate (3) is arranged on described the first housing (1) one end; The second flow distribution plate (4) is arranged on described the second housing (2) one ends;
Be used for making concentrating the first import (5) that front breeze airflow enters described the first housing (1), be arranged on described the first housing (1) one end;
Be used for making breeze airflow after concentrated to discharge the first outlet (6) of described the first housing (1), be arranged on the other end of described the first housing (1);
Be used for regulating combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, the first guide vane group of burning middle and later periods aftercombustion requisite oxygen amount, be arranged in described the first housing (1), comprise the first guide vane (7), the second guide vane (8), the 3rd guide vane (9) and the 4th guide vane (10), and be provided with balance pipe (11) at an end of described the second guide vane (8), described the 3rd guide vane (9) and described the 4th guide vane (10);
Be used for making concentrating the second import (12) that front breeze airflow enters described the second housing (2), be arranged on described the second housing (2) one ends;
Be used for making breeze airflow after concentrated to discharge the second outlet (13) of described the second housing (2), be arranged on the other end of described the second housing (2);
Be used for regulating combustion flame in position and the intensity of burner hearth, guarantee burning fuel-rich combustion in early stage, the second guide vane group of burning middle and later periods aftercombustion requisite oxygen amount, be arranged in described the second housing (2), comprise the 5th guide vane (14), the 6th guide vane (15), the 7th guide vane (16) and the 8th guide vane (17), and at described the 5th guide vane (14), described the 6th guide vane (15), one end of described the 7th guide vane (16) and described the 8th guide vane (17) is provided with balance pipe (11).
2. vertical rich-lean pulverized coal concentration device as claimed in claim 1, it is characterized in that, described the 4th guide vane (10), described the 3rd guide vane (9), described the second guide vane (8) and described the first guide vane (7) are arranged to described the first import (5) direction from low to high by described the first outlet (6).
3. vertical rich-lean pulverized coal concentration device as claimed in claim 2 is characterized in that, described the first guide vane (7) is 20 °～50 ° with the angle of horizontal plane; Described the second guide vane (8) is 20 °～50 ° with the angle of horizontal plane; Described the 3rd guide vane (9) is 20 °～50 ° with the angle of horizontal plane; Described the 4th guide vane (10) is 20 °～50 ° with the angle of horizontal plane.
4. vertical rich-lean pulverized coal concentration device as claimed in claim 3, it is characterized in that, described the 8th guide vane (17), described the 7th guide vane (16), described the 6th guide vane (15) and described the 5th guide vane (14) are arranged to the second import (12) direction from high to low by the second outlet (13).
5. vertical rich-lean pulverized coal concentration device as claimed in claim 4 is characterized in that, described the 5th guide vane (14) is 130 °～160 ° with the angle of horizontal plane; Described the 6th guide vane (15) is 130 °～160 ° with the angle of horizontal plane; Described the 7th guide vane (16) is 130 °～160 ° with the angle of horizontal plane; Described the 8th guide vane (17) is 130 °～160 ° with the angle of horizontal plane.
6. vertical rich-lean pulverized coal concentration device as claimed in claim 5 is characterized in that, described the first guide vane (7) one ends are connected with the inner surface of described the first housing (1).
7. vertical rich-lean pulverized coal concentration device as claimed in claim 6 is characterized in that, an end of described the 5th guide vane (14) is connected with the inner surface of described the second housing (2); And described the 5th guide vane (14) is provided with the interval with the bottom of described housing.
8. vertical rich-lean pulverized coal concentration device as claimed in claim 7 is characterized in that, described balance pipe (11) is specially circular port.
9. vertical rich-lean pulverized coal concentration device as claimed in claim 7 is characterized in that, described balance pipe (11) is specially square opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105768719A CN103017159A (en) | 2012-12-27 | 2012-12-27 | Vertical rich-lean pulverized coal concentration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105768719A CN103017159A (en) | 2012-12-27 | 2012-12-27 | Vertical rich-lean pulverized coal concentration device |
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| CN103017159A true CN103017159A (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105768719A Pending CN103017159A (en) | 2012-12-27 | 2012-12-27 | Vertical rich-lean pulverized coal concentration device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2157400Y (en) * | 1993-04-10 | 1994-02-23 | 哈尔滨工业大学 | Shutter coal powder thickener |
| JP2954659B2 (en) * | 1990-05-21 | 1999-09-27 | バブコツク日立株式会社 | Pulverized coal 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 |
| CN201615479U (en) * | 2009-12-15 | 2010-10-27 | 李朝阳 | Combined vertical rich-lean pulverized coal concentration device |
-
2012
- 2012-12-27 CN CN2012105768719A patent/CN103017159A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2954659B2 (en) * | 1990-05-21 | 1999-09-27 | バブコツク日立株式会社 | Pulverized coal burner |
| CN2157400Y (en) * | 1993-04-10 | 1994-02-23 | 哈尔滨工业大学 | Shutter coal powder thickener |
| 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 |
| CN201615479U (en) * | 2009-12-15 | 2010-10-27 | 李朝阳 | Combined vertical rich-lean pulverized coal concentration device |
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Application publication date: 20130403 |