CN203147754U - Anti-coking nozzle - Google Patents
Anti-coking nozzle Download PDFInfo
- Publication number
- CN203147754U CN203147754U CN 201320079304 CN201320079304U CN203147754U CN 203147754 U CN203147754 U CN 203147754U CN 201320079304 CN201320079304 CN 201320079304 CN 201320079304 U CN201320079304 U CN 201320079304U CN 203147754 U CN203147754 U CN 203147754U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- wall
- adherent wind
- adherent
- coking
- Prior art date
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to an anti-coking nozzle. The anti-coking nozzle comprises a main nozzle and is characterized in that a first wall-adherent air nozzle and a second wall-adherent air nozzle are respectively arranged at the two sides of the main nozzle; the front parts of the first wall-adherent air nozzle and the second wall-adherent air nozzle are respectively parallel to the front (rear) wall or side wall water-cooling wall faces at the same side; and the back parts of the first wall-adherent air nozzle and the second wall-adherent air nozzle are parallel to the central line of an air box. According to the anti-coking nozzle disclosed by the utility model, the wall-adherent air nozzles are additionally arranged at the two sides of the main nozzle and an air protection layer is formed in a water cooling wall region through the guide function of the wall-adherent air nozzles to prevent coal powder from being contacted with a water cooling wall, so as to prevent from coking and hanging coke; and meanwhile, the air is graded in a horizontal direction to effectively reduce the generation of NOx. The wall-adherent air nozzles are simple in structure, lower in cost, small in occupied space and convenient to mount, and can be coordinated with the main nozzle of a combustor to work. The wall-adherent air nozzles of the combustor disclosed by the utility model are convenient for field installation, can effectively reduce and even eliminate the coking of coal which is strong in contamination and is easy to coke, and guarantee the safe, economical and safe operation of a boiler.
Description
Technical field
The utility model relates to a kind of boiler-burner nozzle, belongs to the thermal power generation boiler technical field.
Background technology
Traditional boiler-burner nozzle does not have adherent wind nozzle, and is not ideal to the protective effect of boiler-burner zone water-cooling wall in boiler operatiopn, especially when using the strong easy baking coal of the high contamination of fugitive constituent, easily causes coking when high load capacity.Because temperature height in the high load capacity stove; there is not adherent wind to form oxidizing atmosphere to the water-cooling wall protective effect in the water-cooling wall zone; the coal tar that is in molten condition directly washes away water-cooling wall and causes that the water-cooling wall zone hangs Jiao, thereby causes problems such as exhaust gas temperature height, NOx discharge capacity height, the difficult control of reheater steam temperature.For safe operation of the boiler, Jiao or long-term underrun can only blowing out be played in the scene.In order to overcome the above problems, be necessary to invent a kind of anti-coking nozzle to improve the stove internal combustion.
Summary of the invention
The purpose of this utility model provides a kind of nozzle that is difficult for taking place coking when using the strong easily baking coal of contamination property.
In order to achieve the above object, the technical solution of the utility model has provided a kind of anti-coking nozzle, comprise main burner, it is characterized in that: be respectively equipped with the first adherent wind nozzle and the second adherent wind nozzle in the both sides of main burner, the front portion of the first adherent wind nozzle and the second adherent wind nozzle is parallel with the front wall of homonymy or back wall or side water wall face respectively, and the rear portion of the first adherent wind nozzle and the second adherent wind nozzle is parallel with the center line of bellows.
Preferably, the described first adherent wind nozzle is identical with the described second adherent wind structure of nozzle, comprises front nozzle body and rear nozzle body, front nozzle body and rear nozzle body or be structure as a whole, or link to each other by first connector, or be welded to connect, or clamping.Because adherent wind nozzle front portion is in the hot environment of burner hearth, fragile than the rear portion, adopt first connector to be convenient to change, and be convenient to on-the-spot installation, and this connected mode connects the back and guarantees that the rear portion do not rock.
Preferably, the equivalent diameter of described front nozzle body is along short transverse or constant, or flaring, or convergent.The anterior wind speed of the structure of convergent is conducive to improve the rigidity of adherent wind than the rear portion height; The anterior wind speed of the structure of flaring is low than the rear portion, but area increases, and the zone of protection can enlarge.
Preferably, fixedly connected between the described first adherent wind nozzle and the described second adherent wind nozzle and the case shell, main burner is fixedlyed connected with the second adherent wind nozzle with the first adherent wind nozzle by second connector of both sides, main burner swings up and down around second connector, or by at least 3 second connector fixed-site.
The utility model has increased adherent wind nozzle in the both sides of main burner; adherent wind nozzle rear portion is parallel with the bellows center line; anterior parallel with its peripheral water-cooling wall; by the guide effect of adherent wind nozzle; form the wind protective layer in the water-cooling wall zone; prevent coal dust contact water-cooling wall, thereby avoid coking and hang Jiao that wind forms classification in the horizontal direction and effectively reduces the NOx generation simultaneously.In addition, this adherent wind nozzle arrangements is simple, cost is lower, occupy little space, be convenient to install, can with the co-ordination of burner main burner.The adherent wind nozzle of this burner is convenient to on-the-spot the installation, can reduce even eliminate the strong easily coking of baking coal of contamination property effectively, has guaranteed that safe and economical boiler stably moves.
Description of drawings
Fig. 1 is the horizontal view of adherent wind nozzle in burner case shell and burner hearth of the utility model preferred embodiment;
Fig. 2 is the adherent wind nozzle of the utility model preferred embodiment front view;
Fig. 3 is the adherent wind nozzle side of the utility model preferred embodiment view;
Fig. 4 is the adherent wind nozzle side of the utility model preferred embodiment view (anterior tapering type);
Fig. 5 is the adherent wind nozzle side of the utility model preferred embodiment view (anterior gradual-enlargement type).
The specific embodiment
For the utility model is become apparent, now with preferred embodiment, and conjunction with figs. is described in detail below.
In conjunction with Fig. 1 and Fig. 2, a kind of anti-coking nozzle that the utility model provides comprises main burner 2, is respectively equipped with the first adherent wind nozzle 1 and the second adherent wind nozzle 1 ' in the both sides of main burner 2.The first adherent wind nozzle, 1 front portion is parallel with preceding (back) wall wall-cooling surface 4, the second adherent wind nozzle, 1 ' front portion is parallel with side water wall face 4 ', like this, the air-flow part from bellows 3 enters burner hearth by the front nozzle body 1-b parallel with preceding (back) wall again through behind the rear nozzle body 1-a of adherent wind nozzle; Enter burner hearth by the front nozzle body 1-b ' parallel with side wall from air-flow another part of bellows 3 again through behind the rear nozzle body 1-a ' of adherent wind nozzle.These two strands with the wall parallel gas flow form oxidizing atmosphere in the furnace wall; form the wind protective layer simultaneously, prevent that the fusion coal tar from washing away water-cooling wall and forming extension Jiao or coking, thereby reduce or eliminate coking; air-flow forms tangible classification in the horizontal direction simultaneously, can effectively reduce the generation of NOx.
As shown in Figure 2, identical second connector 7 that comprises between the 3rd connector 6 between first connector 5 between front nozzle body 1-b, rear nozzle body 1-a, front nozzle body 1-b and the rear nozzle body 1-a, the first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' and the bellows 3 and the first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' and the main burner 2 of the structure of first of the present embodiment adherent wind nozzle 1 and the second adherent wind nozzle 1 '.Air-flow from bellows 3 enters burner hearth through rear nozzle body 1-a the past nozzle body 1-b.
As shown in Figure 3, the first adherent wind nozzle 1 or second adherent wind nozzle 1 ' the short transverse signal for present embodiment, the diameter of front nozzle body 1-b and rear nozzle body 1-a is constant along short transverse among this figure, wherein, front nozzle body 1-b is connected with first connector 5 that rear nozzle body 1-a respectively had by the end, top; Connect by the 3rd connector 6 between the first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' and the bellows 3, in order to realize fixing, the 3rd connector 6 has two at least; The first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' are connected by second connector 7 with main burner 2, main burner 2 is fixed on the first adherent wind nozzle 1 and the second adherent wind nozzle 1 ' by second connector 7, the first adherent wind nozzle 1 and the second adherent wind nozzle 1 ' are fixed on the bellows 3, and main burner 2 can be realized swinging up and down around second connector 7.
Be illustrated in figure 4 as the first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' side view (anterior tapering type) of the utility model preferred embodiment.The anterior wind speed of this structure is conducive to improve the rigidity of adherent wind than the rear portion height.
Be illustrated in figure 5 as the first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' (anterior gradual-enlargement type) of the utility model preferred embodiment.This nozzle front portion can be gradual-enlargement type along short transverse, and the anterior wind speed of this nozzle is low than the rear portion, but area increases, and the zone of protection can enlarge.
In the actual engineering design, can be designed to gradual-enlargement type, invariant or tapering type as required.
The first adherent wind nozzle 1 or the second adherent wind nozzle 1 ' that above embodiment describes are that a kind of front and rear is split type, wherein front nozzle body 1-b can cast, rear nozzle body 1-a also can cast, can connect through connector after casting is good, front nozzle body 1-b be connected by connector after rear nozzle body 1-a also can adopt heat-resisting steel sheet and plate welding or clamping.
Also can adopt front nozzle body 1-b and rear nozzle body 1-a integral type in the actual design, the adherent wind nozzle of integral type also can monoblock cast, also can be by heat-resisting steel sheet and plate welding or clamping.
Though more than described the specific embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.
Claims (4)
1. anti-coking nozzle, comprise main burner (2), it is characterized in that: be respectively equipped with the first adherent wind nozzle (1) and the second adherent wind nozzle (1 ') in the both sides of main burner (2), the front portion of the first adherent wind nozzle (1) and the second adherent wind nozzle (1 ') is parallel with the front wall of homonymy or back wall or side water wall face respectively, and the rear portion of the first adherent wind nozzle (1) and the second adherent wind nozzle (1 ') is parallel with the center line of bellows (3).
2. a kind of anti-coking nozzle as claimed in claim 1, it is characterized in that: the described first adherent wind nozzle (1) is identical with the structure of the described second adherent wind nozzle (1 '), comprise front nozzle body (1-b) and rear nozzle body (1-a), front nozzle body (1-b) and rear nozzle body (1-a) or be structure as a whole, or it is continuous by first connector (5), or be welded to connect, or clamping.
3. a kind of anti-coking nozzle as claimed in claim 2, it is characterized in that: the diameter of described front nozzle body (1-b) is along short transverse or constant, or flaring, or convergent.
4. a kind of anti-coking nozzle as claimed in claim 1, it is characterized in that: fixedly connected between the described first adherent wind nozzle (1) and the described second adherent wind nozzle (1 ') and the bellows (3), main burner (2) is fixedlyed connected with the second adherent wind nozzle (1 ') with the first adherent wind nozzle (1) by second connector (7) of both sides, main burner (2) or swing up and down around second connector (7), or by at least 3 second connectors (7) fixed-site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079304 CN203147754U (en) | 2013-02-20 | 2013-02-20 | Anti-coking nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079304 CN203147754U (en) | 2013-02-20 | 2013-02-20 | Anti-coking nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203147754U true CN203147754U (en) | 2013-08-21 |
Family
ID=48975274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320079304 Expired - Lifetime CN203147754U (en) | 2013-02-20 | 2013-02-20 | Anti-coking nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203147754U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438438A (en) * | 2013-08-26 | 2013-12-11 | 中节环立为（武汉）能源技术有限公司 | Method and device for preventing membrane water wall type boiler from high-temperature corrosion and coking |
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
| CN109058982A (en) * | 2018-06-20 | 2018-12-21 | 西安西热锅炉环保工程有限公司 | A kind of adherent wind system for preventing and treating tangentially-fired boiler water wall high temperature corrosion |
| CN111457365A (en) * | 2020-04-02 | 2020-07-28 | 内蒙古锦联铝材有限公司 | Low-nitrogen combustion method for pulverized coal fired boiler |
-
2013
- 2013-02-20 CN CN 201320079304 patent/CN203147754U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438438A (en) * | 2013-08-26 | 2013-12-11 | 中节环立为（武汉）能源技术有限公司 | Method and device for preventing membrane water wall type boiler from high-temperature corrosion and coking |
| CN103438438B (en) * | 2013-08-26 | 2016-08-10 | 中节环立为（武汉）能源技术有限公司 | Memberane wall type boiler high temperature corrosion resistance method for coke and device thereof |
| CN109058982A (en) * | 2018-06-20 | 2018-12-21 | 西安西热锅炉环保工程有限公司 | A kind of adherent wind system for preventing and treating tangentially-fired boiler water wall high temperature corrosion |
| CN108730969A (en) * | 2018-07-24 | 2018-11-02 | 西安热工研究院有限公司 | A kind of coal powder direct supplying burner structure with adjustable adherent wind |
| CN111457365A (en) * | 2020-04-02 | 2020-07-28 | 内蒙古锦联铝材有限公司 | Low-nitrogen combustion method for pulverized coal fired boiler |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203147754U (en) | Anti-coking nozzle | |
| CN202012930U (en) | Local soot blowing device of W-shaped flame boiler | |
| CN204008417U (en) | A kind of sectional temperature-controlled coal-burning boiler high temperature corrosion and Slagging Characteristics test unit | |
| CN203980270U (en) | The adjustable coal burner nozzle of a kind of bluff body | |
| CN205014342U (en) | Water -cooling wall high temperature corrosion device is prevented to adherence wind with independent induced duct | |
| CN207230919U (en) | A kind of chain grate hot-water boiler with boiler tail afterheat energy-saving environmental protecting device | |
| CN201391880Y (en) | Soot formation loosening device for horizontal flue of straw boiler | |
| CN207407373U (en) | A kind of anti-scorch wind structure of Process In A Tangential Firing burner | |
| CN105927975B (en) | A kind of air distribution plate, selective deslagging device and multipath circulating fluidized bed boiler | |
| CN210320005U (en) | Boiler wall-attached air system for preventing high-temperature corrosion of water wall | |
| CN201547962U (en) | Side water cooling wall structure of double drums horizontal type coal burning hot water boiler | |
| CN204534550U (en) | Vertical expansion furnace is adopted to use the boiler of low-ash-fusion coal | |
| CN203517766U (en) | Anti-coking furnace structure | |
| CN206094036U (en) | A adiabatic material returning device for CFB flue gas emergence equipment | |
| CN204420985U (en) | Horizontal front burner hearth is adopted to use the boiler of low-ash-fusion coal | |
| CN207539894U (en) | A kind of resistance to deformation water-cooling screen of circulating fluidized bed boiler | |
| CN203052647U (en) | Boiler capable of adjusting smoke temperature of hearth outlet | |
| CN204880099U (en) | Boiler combustion ware nozzle | |
| CN103090406A (en) | Biomass boiler | |
| CN202092104U (en) | Sealing mechanism between forge pieces at junction of smoke deflecting corner water-cooling wall and hearth back wall water-cooling wall | |
| CN202598554U (en) | Dust removing device for boiler flue | |
| CN207350325U (en) | A kind of new step arch W flame boiler furnace structure | |
| CN202769693U (en) | Boiler free of contamination and coking | |
| CN206419975U (en) | A kind of boiler flue gas treatment system | |
| CN207247214U (en) | A kind of Two-way Cycle turbulent bed incinerator with sand blasting unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |