CN206112916U - Coal powder burner - Google Patents
Coal powder burner Download PDFInfo
- Publication number
- CN206112916U CN206112916U CN201620837627.7U CN201620837627U CN206112916U CN 206112916 U CN206112916 U CN 206112916U CN 201620837627 U CN201620837627 U CN 201620837627U CN 206112916 U CN206112916 U CN 206112916U
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- China
- Prior art keywords
- air device
- center
- tube cell
- burner
- ball valve
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Abstract
The utility model relates to a coal powder burner, tube cell, overgrate air device, tertiary air device, flame jet, ignition, water cooling circulation ware are given to center including setting up on furnace, and the center connects ignition for the tube cell front end, the trailing end connection flame jet, and the center is for still being connected with flame detector on the tube cell. The utility model discloses owing to set up the special construction design of overgrate air device and tertiary air device, can reduce burner gas high temperature, carry high oxygen content, reach low -nitrogen combustion's effect, the setting of annular separation blade, can adjust air -out direction and air outlet angle, delay the speed of marcing of burner gas for air and buggy intensive mixing, greatly reduced oxynitrides's emission.
Description
Technical field
This utility model is related to a kind of efficiently low nitrogen coal burner, belongs to industrial burner technical field.
Background technology
At present the supporting coal burner of Industrial Boiler institute is primarily present problems with：
1st, fuel coal granularity, composition, ash fusing point require more harshness, and coal dust burn-off rate is poor, is unfavorable for industrial product
The popularization and application of product.
2nd, steam generator system is easy to slagging scorification, coking, is unfavorable for the safety and economic operation of heating system.
3rd, burner load range is narrower, and buner system operation conditions is poor during underload.
4th, burner blowing system tunable performance is poor, and pulverized coal flame is difficult adjustment, poor with boiler body adaptability.
5th, the unreasonable heating power type N compound concentration of emission of staged air distribution design is higher, it is impossible to meet current national requirements for environmental protection.
6th, control, monitoring, runtime design are not perfect enough, it is impossible to realize combustion system automatic running.
7th, burner body insulation construction is undesirable, and radiation loss is larger.
8th, cooling structure is not taken at localized hyperthermia position, and burner operation bad environments, fault rate height can not reliably, stably
Work.
9th, during low load operation, because system exhaust gas volumn reduces, steam generator system efficiency declines, and heat-exchange system dust stratification is serious.
The content of the invention
To solve above-mentioned technical problem, this utility model provides a kind of coal burner device.
The technical solution of the utility model is：Coal burner, including the center being arranged on burner hearth to tube cell, secondary wind
Device, tertiary air device, flame jet, igniter, recirculated water cooler, center connects igniter, tail end to tube cell front end
Connection flame jet, center on tube cell to being also associated with flame detector, it is characterised in that：
Described center is connected respectively to tube cell with overfire air device and tertiary air device, and center connects to tube cell sidepiece
Recirculated water cooler, center is additionally provided with venturi mixing arrangement and spoiler to tube cell inside；
Described overfire air device and tertiary air device is arranged side by side, and is fixed on burner body Inner, overfire air device
Form the annular space passage for transmitting gasifying agent between tertiary air device, described overfire air device and tertiary air device go out
Arc block plate is equipped with air port, two air outlets are connected to form semicircular arc by described arc block plate；
Electromagnetic start ball valve is installed, described electromagnetic start ball valve is connected with PLC program controllers in described igniter
Connect, described electromagnetic start ball valve is perpendicular with hearth wall to inclined arrangement on tube cell, and its axis at center；
Angle between described overfire air device and the air outlet of tertiary air device is 60 ° -80 °.
This utility model also includes PLC control system, including PLC burning program controllers and connected coal dust sampling respectively
Analyser, zirconium oxide determination of oxygen content instrument, fume component analysis instrument, fire box temperature negative pressure assay instrument, described PLC burning journeys
Control device is also connected with overfire air device, tertiary air device and flame detector.
Electromagnetic start ball valve is installed, described electromagnetic start ball valve and PLC in igniter described in the utility model
Program controller is connected.
Operation principle of the present utility model is;Overfire air device is made a gift to someone coal dust by fresh air to tube cell in center,
Eddy flow is advanced in overfire air device, increases the holdup time to improve burnout rate, and then enters boiler, partial fume and fresh air
Mixing is uniformly distributed direct current into inside burner hearth through tertiary air device, reduces furnace gas high temperature, improves oxygen content, reaches low nitrogen
The effect of burning, the setting of described annular catch, can adjust air-out direction and air outlet angle, delay the traveling speed of furnace gas
Degree so that air and coal dust are sufficiently mixed, and substantially reduce the discharge of oxynitride.
This utility model has advantages below：1st, using burner body, PLC combustion system program controllers, coal dust sampling point
Analyzer, blower fan system, ignition system, flame scanning system, flame smooth combustion apparatus, local circulation water-cooling system, overall adiabatic system
System integrated structure design, occupy top standard in like product.
The 2nd, the strong mixed structure of efficient venturi+spoiler is set in primary air piping, the fully mixed of wind powder is effectively realized
Close, it is to avoid deposition, pulsation in wind powder course of conveying, the problems such as block, realize the abundant atomization of wind powder.
3rd, two-stage air distribution device is designed, successively high-speed rotational enters combustion system for secondary, tertiary air classification, and classification is helped
Combustion, rationally controls flame mechanism, realizes the adjustable controllable of pulverized coal flame ignition temperature, greatly reduces the generation of heating power type N compound
And concentration of emission, realize controllable burning and clean fume emission.
4th, burner integrated structure design facilitates installation and operation and maintenance.
5th, fuel goes for II, III bituminous coal, and fuel tolerance is stronger.
6th, primary air piping, classification realizes the good atomization of wind powder to wind structure design, improves stablizing for coal dust firing
Property and efficiency of combustion, make coal dust burnout rate close more than 95%.
7th, combustion system program controller and staged air distribution structure optimization excess air factor, reduces boiler exhaust gas heat waste
Lose.
8th, burner flame nozzle diameter is adjusted according to thermic load adjust automatically size to coal dust torch characteristic dimension
It is whole.Prevent flame adherent, prevent the generation of boiler furnace slagging scorification and coking.
9th, the supporting electromagnetism fast opening and closing ball valve of combustion system and PLC program controllers realize that program igniting is protected automatically with flame-out jointly
Shield, meets the safety requirements of combustion system.
10th, control and monitoring system is complete, and by host computer and PLC program controllers combustion system igniting, operation, automatically are realized
The function such as protection, the detection of failure and recovery, and with steam generator system interlock protection, meet the safe and efficient automatic running of system.Its
Product and technology occupy leading position in like product at home.
11st, PLC control system, on-line checking coal powder density, one or two tertiary air pressures, air quantity, boiler tail flue gas is adopted to contain
Oxygen amount, combustion chamber draft, boiler heating power parameter carry out data acquisition and contrast computing, coal dust firing and therrmodynamic system is reached most preferably
Operating condition.
12nd, flue gas recirculation system is set so that combustion system load regulation range is more broad, in 30 ~ 110% loads
In the range of coal dust can efficient stable burning, it is ensured that steam generator system load stable and the safety run.
13rd, local circulation water-cooling system can protect burner reliability service.
14th, spray heat insulating material is taken, burner radiation loss is reduced, the thermal efficiency is improved.
15th, according to coal dust sample analysis instrument detection data real-time adjustment coal dust, air quantity, wind pressure parameter, it is ensured that coal dust is efficient
Burning.
16th, institute is structured using combustion system efficient burning, low nitrogen clean emission is ensured, meets energy-saving and environmental protection requirement.
17th, the swirl strength of two tertiary airs is adjusted by lime-ash carbon residue analyser Real-time Feedback, optimization burning improves fuel
Burn-off rate.
Description of the drawings
Fig. 1 is this utility model overall structure diagram.
Specific embodiment
Coal burner, sprays including the center on burner hearth that is arranged on to tube cell 1, overfire air device 2, tertiary air device 3, flame
Mouth, igniter 5, recirculated water cooler 6, center connects igniter 5, tail end connection flame jet 4, center to the front end of tube cell 1
To be also associated with tube cell 1 flame detector, it is characterized in that：
Described center is connected respectively to tube cell 1 with overfire air device 2 and tertiary air device 3, and the sidepiece of tube cell 1 is given at center
Connection recirculated water cooler 7, center inside tube cell 1 to being additionally provided with venturi mixing arrangement and spoiler；
Described overfire air device 2 and tertiary air device 3 is arranged side by side, and is fixed on burner body Inner, secondary wind dress
The annular space passage 8 formed between 2 and tertiary air device 3 for transmitting gasifying agent is put, described overfire air device 2 and tertiary air is filled
The air outlet for putting 3 is equipped with arc block plate, and two air outlets are connected to form semicircular arc by described arc block plate；
Electromagnetic start ball valve is installed, described electromagnetic start ball valve is connected with PLC program controllers in described igniter
Connect, described electromagnetic start ball valve is perpendicular with hearth wall to inclined arrangement on tube cell, and its axis at center；
Angle between described overfire air device and the air outlet of tertiary air device is 60 ° -80 °.
This utility model also includes PLC control system, including PLC burning program controllers and connected coal dust sampling respectively
Analyser, zirconium oxide determination of oxygen content instrument, fume component analysis instrument, fire box temperature negative pressure assay instrument, described PLC burning journeys
Control device is also connected with overfire air device 2, tertiary air device 3 and flame detector.
Electromagnetic start ball valve is installed, described electromagnetic start ball valve and PLC in igniter described in the utility model 5
Program controller is connected.
Operation principle of the present utility model is;Overfire air device is made a gift to someone coal dust by fresh air to tube cell in center,
Eddy flow is advanced in overfire air device, increases the holdup time to improve burnout rate, and then enters boiler, partial fume and fresh air
Mixing is uniformly distributed direct current into inside burner hearth through tertiary air device, reduces furnace gas high temperature, improves oxygen content, reaches low nitrogen
The effect of burning, the setting of described annular catch, can adjust air-out direction and air outlet angle, delay the traveling speed of furnace gas
Degree so that air and coal dust are sufficiently mixed, and substantially reduce the discharge of oxynitride.
Claims (3)
1. coal burner, including the center being arranged on burner hearth to tube cell, overfire air device, tertiary air device, flame jet,
Igniter, recirculated water cooler, center connects igniter to tube cell front end, and tail end connects flame jet, and center is on tube cell
It is also associated with flame detector, it is characterised in that：
Described center is connected respectively to tube cell with overfire air device and tertiary air device, and center is circulated to the connection of tube cell sidepiece
Water cooler, center is additionally provided with venturi mixing arrangement and spoiler to tube cell inside；
Described overfire air device and tertiary air device is arranged side by side, and is fixed on burner body Inner, overfire air device and three
The air outlet ring that the annular space passage for transmitting gasifying agent, overfire air device and tertiary air device are formed between secondary wind apparatus sets
There is arc block plate, two air outlets are connected to form semicircular arc by described arc block plate；
Electromagnetic start ball valve is installed, described electromagnetic start ball valve is connected with PLC program controllers, institute in described igniter
The electromagnetic start ball valve stated is perpendicular with hearth wall to inclined arrangement on tube cell, and its axis at center；
Angle between described overfire air device and the air outlet of tertiary air device is 60 ° -80 °.
2. coal burner according to claim 1, it is characterised in that：Also include PLC control system, including PLC burnings
Program controller and respectively connected coal dust sample analysis instrument, zirconium oxide determination of oxygen content instrument, fume component analysis instrument, burner hearth
Temperature negative pressure assay instrument, described PLC burning program controllers are also connected with overfire air device, tertiary air device and flame detector
Connect.
3. coal burner according to claim 1 and 2, it is characterised in that：Electromagnetism is installed in described igniter
Start ball valve, described electromagnetic start ball valve is connected with PLC program controllers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620837627.7U CN206112916U (en) | 2016-08-04 | 2016-08-04 | Coal powder burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620837627.7U CN206112916U (en) | 2016-08-04 | 2016-08-04 | Coal powder burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206112916U true CN206112916U (en) | 2017-04-19 |
Family
ID=58511342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620837627.7U Expired - Fee Related CN206112916U (en) | 2016-08-04 | 2016-08-04 | Coal powder burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206112916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657449A (en) * | 2019-09-20 | 2020-01-07 | 沈忠东 | Automatic adjusting mechanism and adjusting method for internal air and external air of combustor |
| CN112413640A (en) * | 2020-11-23 | 2021-02-26 | 上海轻叶能源股份有限公司 | Intelligent gas burner ignition system |
-
2016
- 2016-08-04 CN CN201620837627.7U patent/CN206112916U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657449A (en) * | 2019-09-20 | 2020-01-07 | 沈忠东 | Automatic adjusting mechanism and adjusting method for internal air and external air of combustor |
| CN112413640A (en) * | 2020-11-23 | 2021-02-26 | 上海轻叶能源股份有限公司 | Intelligent gas burner ignition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20190804 |