CN202902273U - High-condensation pulverized coal burner - Google Patents
High-condensation pulverized coal burner Download PDFInfo
- Publication number
- CN202902273U CN202902273U CN2012205866986U CN201220586698U CN202902273U CN 202902273 U CN202902273 U CN 202902273U CN 2012205866986 U CN2012205866986 U CN 2012205866986U CN 201220586698 U CN201220586698 U CN 201220586698U CN 202902273 U CN202902273 U CN 202902273U
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- China
- Prior art keywords
- air
- pulverized coal
- burner
- inner sleeve
- coal dust
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a high-condensation pulverized coal burner. The burner consists of a pulverized coal spray gun and an air register, wherein the air register comprises a shell, a cyclone vane wheel, a pull rod, a pull rod locking device, an inner sleeve and a rear cover; the pulverized coal spray gun comprises a pulverized coal spray pipe, a pulverized coal sprayer, a spray pipe locking device and a spray pipe joint; vanes of the cyclone vane wheels are twisted vanes, and twisted angles of the twisted vanes from an air inlet end to an air outlet end are respectively 90 degrees; and an included angle of 0 is formed between a vane surface and an axial direction at the air inlet end, namely the vane surface is parallel with an x axis, then the radian is gradually transited uniformly to the air outlet end, and an included angle of 45 degrees is formed between the vane surface and the x axis at the air outlet end. The burners has two independent parts, namely the pulverized coal spray gun and the air register, and a single set of pulverizing and conveying system can be used by dozens of burners; the burner can be widely applied to thermal equipment with a plurality of heat supply points; and besides, the air amount of pulverized coal carried by the burner is very small, and combustion temperature can be greatly increased after combustion air is preheated to a relatively high temperature.
Description
Technical field:
The utility model belongs to technical field of burner, relates in particular to a kind of concentration can be reached 15～40kg/m
3The high concentration pulverized coal air-flow be directly used in a kind of Burner for Pulverized Coal of High Concentration of industrial furnace.
Background technology:
Conventional pulverized coal combustion system has direct-firing and middle warehouse formula two classes.The former is that coal is carried by air-flow after coal pulverizer powder process and directly enters coal burner burning, latter be first with coal through flour mill powder process, then be stored in the warehouse through dust-precipitator, by powder feeding equipment and air and powder mixer coal dust is carried into burner combustion again.More than two kinds of pulverized coal combustion systems, no matter be applied to station boiler, Industrial Boiler or various industrial furnace, the ratio of its coal dust in carrying air-flow all is very low.In general, the air (also claiming wind one time) that carries coal dust accounts for 20%～30% of coal dust firing required air quantity, about every cubic metres of air can only be carried 0.55～0.85kg coal dust, and required all the other burning required airs are provided by Secondary Air even the tertiary air of burner.The characteristics of this combustion system are that the quantity of every cover system burner can not be too many, generally are 1～6 burners, otherwise can't guarantee evenly to supply powder.In addition, be prevent exploding, can not carry out preheating to the air that carries coal dust.
Another kind of technology is the blast-furnace coal powder injection technology.Coal dust enters the coal dust storage tank after coal pulverizer powder process and dust-precipitator collection, then by the operation cycle coal dust is joined winding-up tank with fluidizer, enter duty after the pressurization of winding-up tank, coal dust is carried through defeated powder house steward to the stokehold distributor by high pressure draught through blender again, and then the dozens of arm by telling, coal dust be sent to pulverized coal gun spray into Blast Furnace Raceway finish the burning with the gasification.The characteristics of this jet burning system, the one, coal dust is dense in the breeze airflow, can reach 15～40kg/m
3, than exceed tens times of general pulverized coal combustion system, reduce ignition temperature to avoid more cold air to enter the convolution district; The 2nd, the jet pipe quantity of each system can be a lot, and each arm pulverized coal flow is very even behind distributor.
Summary of the invention:
The purpose of this utility model provides a kind of powder process and conveying technology that utilizes the blast furnace blowing system, this high concentration pulverized coal air-flow is directly used in the burner of industrial furnace.Many to be suitable for burner quantity, large for thermal region, heating load requires the Burner for Pulverized Coal of High Concentration of the coal fuel heating construction equipment such as uniform tunnel cave.
The technical solution of the utility model is: Burner for Pulverized Coal of High Concentration, and this burner is made of pulverized coal gun and air register;
This burner is made of pulverized coal gun and air register;
Described air register comprises shell, eddy flow impeller, pull bar, draw lever locking device, inner sleeve and bonnet;
Described pulverized coal gun comprises coal dust jet pipe, coal dust shower nozzle and jet pipe locking device and spray nozzle;
Wherein, the blade of described eddy flow impeller is twisted blade, and the angle of the air intake of blade and outlet air end distortion is 90 °, be 0 at the air intake blade face with axial angle, namely parallel with the x axis, then wait evenly gradually transition of radian, when transitting to outlet air end, blade and x axis angle are 45 °;
The front end of described shell is provided with air outlet, the rear end of described housing is provided with described bonnet, described bonnet is fixed by bolt and described housing seal, described case top is provided be used to the air inlet that advances combustion air, described inner sleeve places the center in the described shell, described inner sleeve is fixedly connected with described bonnet, and described eddy flow impeller is socketed on the outer wall of described inner sleeve; Described pull bar is provided with draw lever locking device, described pull bar passes described bonnet and inserts in the described housing, the axle sleeve that is connected on the described eddy flow impeller on the described inner sleeve with installation sleeve is affixed, can regulate the position of described eddy flow impeller between described air outlet and air inlet by described pull bar; Described coal dust jet pipe places in the described inner sleeve, and is affixed by described jet pipe locking device and described inner sleeve, and described coal dust shower nozzle is arranged on described air outlet place and is threaded with described coal dust jet pipe front end, and the rear end of described coal dust jet pipe is provided with spray nozzle.
The beneficial effects of the utility model are: the utility model independently partly is made of pulverized coal gun and two of air registers, because adopting the defeated powder of high concentration is combustion technology, therefore, only need a cover powder process induction system, just can be for the dozens of burner, the Thermal Equipment that can be widely used in many heat supply points is such as tunnel cave, heater for rolling steel, heat-treatment furnace etc.Fail in the constant situation of powder pressure in system, can adjust by the coal dust shower nozzle of changing different bores the burning capacity of burner.In addition, the air capacity that Burner for Pulverized Coal of High Concentration carries coal dust seldom can make ignition temperature increase substantially after combustion air is preheating to higher temperature.
Description of drawings:
Fig. 1 is the cross-sectional schematic of the utility model Burner for Pulverized Coal of High Concentration.
Fig. 2 is that schematic diagram is looked on the right side of the utility model Burner for Pulverized Coal of High Concentration.
Fig. 3 is the schematic perspective view of the utility model eddy flow impeller.
Fig. 4 is the front view of the utility model eddy flow impeller.
Fig. 5 is the rearview of the utility model eddy flow impeller.
Among the figure:
1-housing, 2-eddy flow impeller, 3-pull bar, 4-draw lever locking device, 5-bonnet, 6-inner sleeve, 7-coal dust shower nozzle, 8-jet pipe locking device, 9, air outlet, 10-air inlet, 11-coal dust jet pipe, 12-spray nozzle, 13-air intake, 14 outlet air ends.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described further.
Be the structural representation of the utility model Burner for Pulverized Coal of High Concentration as shown in Figure 1 and Figure 2, the utility model Burner for Pulverized Coal of High Concentration, this burner is made of pulverized coal gun and air register;
Air register comprises shell 1, eddy flow impeller 2, pull bar 3, draw lever locking device 4, inner sleeve 6 and bonnet 5;
Pulverized coal gun comprises coal dust jet pipe 11, coal dust shower nozzle 7 and jet pipe locking device 8 and spray nozzle 12;
Wherein, the front end of shell 1 is provided with air outlet 9, the rear end is provided with bonnet 5, bonnet 5 is fixing by bolt and 1 sealing of described housing, housing 1 top is provided be used to the air inlet 10 that advances combustion air, described inner sleeve 6 places the center in the shell 1, and inner sleeve 6 is fixedly connected with bonnet 5, on the outer wall of the described inner sleeve 6 of eddy flow impeller 2 sockets; Pull bar 3 is provided with draw lever locking device 4, pull bar 3 passes bonnet 5 and inserts in the housing 1, the axle sleeve that is connected on the described eddy flow impeller 2 on the described inner sleeve 6 with installation sleeve is affixed, can regulate the position of described eddy flow impeller 2 between air outlet 9 and air inlet 10 by described pull bar 3; Coal dust jet pipe 11 places in the inner sleeve 6, and affixed by described jet pipe locking device 8 and described inner sleeve 6, described coal dust shower nozzle is arranged on described air outlet place 9 and is threaded with described coal dust jet pipe 11 front ends, and the rear end of described coal dust jet pipe 11 is provided with spray nozzle 12.
As shown in Figure 3-Figure 5, eddy flow impeller 2 upper equidistantly is provided with some blades, and blade is twisted blade, the angles of twisted blade 14 distortions from air intake 13 to outlet air end are θ, and θ=90 °, and the blade face of air intake 13 is 0 with axial angle, namely parallel with the x axis, then
Even Deng radianGradually transition, when transitting to outlet air end 14, blade face and x axis angle are 45 °;
Operation principle of the present utility model is: during use, by pull bar 3 eddy flow impeller 2 is adjusted to the precalculated position, locking draw lever locking device 4, eddy flow impeller 2 is fixing, the high concentration pulverized coal air-flow is connected with spray nozzle and being connected of coal dust jet pipe 11 through flow control valve, combustion air pipeline air inlet 10 connects, and coal powder density is 15～40kg/m
3Breeze airflow in the scope, be that the breeze airflow that every cubic metres of air is carried 15～40 kilograms of coal dusts enters coal dust jet pipe 11, from 7 ejections of coal dust shower nozzle, combustion air enters in the housing 1 from air inlet 10 with certain speed, produces rotating jet by air outlet 9 ejections through eddy flow impeller 2.Coal dust mixes with combustion air after the ejection, and is subject to radiation and the high-temperature furnace gas Convective Heating of burner block, burner hearth, disengages volatile matter, volatile matter and carbon granule ignition under higher temperature.Form good aerodynamic field, thereby form desirable flame profile, and finish smooth combustion.
More than an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (1)
1. Burner for Pulverized Coal of High Concentration is characterized in that, this burner is made of pulverized coal gun and air register;
Described air register comprises shell (1), eddy flow impeller (2), pull bar (3), draw lever locking device (4), inner sleeve (6) and bonnet (5);
Described pulverized coal gun comprises coal dust jet pipe (11), coal dust shower nozzle (7) and jet pipe locking device (8) and spray nozzle (12);
Wherein, the blade of described eddy flow impeller (2) is twisted blade, the angle that blade twists from air intake to outlet air end is 90 °, be 0 at the air intake blade face with axial angle, namely parallel with the x axis, then wait evenly gradually transition of radian, when transitting to outlet air end, blade face and x axis angle are 45 °;
The front end of described shell (1) is provided with air outlet (9), the rear end of described housing (1) is provided with described bonnet (5), described bonnet (5) is fixing by bolt and described housing (1) sealing, described housing (1) top is provided be used to the air inlet that advances combustion air (10), described inner sleeve (6) places the center in the described shell (1), described inner sleeve (6) is fixedly connected with described bonnet (5), and described eddy flow impeller (2) is socketed on the outer wall of described inner sleeve (6); Described pull bar (3) is provided with draw lever locking device (4), described pull bar (3) passes described bonnet (5) and inserts in the described housing (1), the axle sleeve that is connected on the described eddy flow impeller (2) on the described inner sleeve (6) with installation sleeve is affixed, can regulate the position of described eddy flow impeller (2) between described air outlet (9) and air inlet (10) by described pull bar (3); Described coal dust jet pipe (11) places in the described inner sleeve (6), affixed by described jet pipe locking device (8) and described inner sleeve (6), described coal dust shower nozzle is arranged on described air outlet place and is threaded with described coal dust jet pipe (11) front end, and the rear end of described coal dust jet pipe (11) is provided with spray nozzle (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205866986U CN202902273U (en) | 2012-11-08 | 2012-11-08 | High-condensation pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205866986U CN202902273U (en) | 2012-11-08 | 2012-11-08 | High-condensation pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202902273U true CN202902273U (en) | 2013-04-24 |
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ID=48122934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205866986U Expired - Lifetime CN202902273U (en) | 2012-11-08 | 2012-11-08 | High-condensation pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202902273U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913903A (en) * | 2012-11-08 | 2013-02-06 | 北京科技大学 | High-concentration pulverized coal burner |
| CN106594727A (en) * | 2016-11-24 | 2017-04-26 | 景德镇陶瓷大学 | Efficient and energy-saving long flame swirl burner |
| CN106813264A (en) * | 2017-04-01 | 2017-06-09 | 东方宏海新能源科技发展有限公司 | A kind of burner with high efficiency |
-
2012
- 2012-11-08 CN CN2012205866986U patent/CN202902273U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913903A (en) * | 2012-11-08 | 2013-02-06 | 北京科技大学 | High-concentration pulverized coal burner |
| CN102913903B (en) * | 2012-11-08 | 2015-08-26 | 北京科技大学 | Burner for Pulverized Coal of High Concentration |
| CN106594727A (en) * | 2016-11-24 | 2017-04-26 | 景德镇陶瓷大学 | Efficient and energy-saving long flame swirl burner |
| CN106594727B (en) * | 2016-11-24 | 2018-08-24 | 景德镇陶瓷大学 | A kind of efficient, energy saving, long flame turbulent burner |
| CN106813264A (en) * | 2017-04-01 | 2017-06-09 | 东方宏海新能源科技发展有限公司 | A kind of burner with high efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20150826 |
|
| RGAV | Abandon patent right to avoid regrant |