CN203687027U - Novel efficient low-nitrogen fully-automatic pulverized coal burner - Google Patents
Novel efficient low-nitrogen fully-automatic pulverized coal burner Download PDFInfo
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- CN203687027U CN203687027U CN201320871384.5U CN201320871384U CN203687027U CN 203687027 U CN203687027 U CN 203687027U CN 201320871384 U CN201320871384 U CN 201320871384U CN 203687027 U CN203687027 U CN 203687027U
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- air device
- feeding pipe
- powder feeding
- center
- tube cell
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Abstract
The utility model relates to a novel efficient low-nitrogen fully-automatic pulverized coal burner which comprises a central powder feeding pipe, a secondary air device, a tertiary air device, a flame jet, an ignition device and a circulating water cooler, wherein the front end of the central powder feeding pipe is connected with the ignition device, and the tail end of the central powder feeding pipe is connected with the flame jet; a flame detector is also connected onto the central powder feeding pipe, and the central powder feeding pipe is respectively communicated with the secondary air device and the tertiary air device; the side part of the central powder feeding pipe is connected with the circulating water cooler, and the inner part of the central powder feeding pipe is also provided with a Venturi mixing device and a spoiler. The novel efficient low-nitrogen fully-automatic pulverized coal burner can reasonably control the burning progress, can adjust and control the flame burning temperature of pulverized coal, greatly reduces the generation and emission concentration of thermal type N compounds, and realizes controllable burning and clean fuel gas emission.
Description
Technical field
The utility model relates to a kind of efficient low nitrogen coal burner, belongs to industrial burner technical field.
Background technology
Mainly there is following problem in the supporting coal burner of Industrial Boiler at present:
1, fuel coal granularity, composition, ash content fusing point require comparatively harshness, and coal dust burn-off rate is poor, is unfavorable for applying of industrial products.
2, steam generator system is easy to slagging scorification, coking, is unfavorable for the safety and economic operation of heating system.
3, burner load adjustment scope is narrower, and when underload, buner system operation conditions is poor.
4, burner blowing system tunable performance is poor, and pulverized coal flame is difficult for adjusting, poor with boiler body adaptability.
5, to design unreasonable heating power type N compound concentration of emission higher for staged air distribution, cannot meet current national requirements for environmental protection.
6, control, monitoring, operational system design perfect not, cannot realize combustion system and automatically move.
7, burner body insulation construction is undesirable, and radiation loss is larger.
8, cooling structure is not taked at localized hyperthermia position, and burner operation environment is severe, fault rate high can not be reliably, steady operation.
9, when low load operation, because system exhaust gas volumn reduces, steam generator system decrease in efficiency, heat-exchange system dust stratification is serious.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of efficient low nitrogen full-automatic coal powder burner device.
The technical solution of the utility model is: efficient low nitrogen full-automatic coal powder burner, comprise that center is to tube cell, overfire air device, tertiary air device, flame jet, igniter, recirculated water cooler, center connects igniter to tube cell front end, tail end connects flame jet, center is to being also connected with flame detector on tube cell, it is characterized in that: described center is connected with overfire air device and tertiary air device respectively to tube cell, center connects recirculated water cooler to tube cell sidepiece, and center is also provided with venturi mixing arrangement and spoiler to tube cell inside.
The utility model also comprises PLC control system, comprise PLC burning program controller and the connected coal dust sample analysis instrument of difference, zirconia determination of oxygen content instrument, fume component analysis instrument, fire box temperature negative pressure assay instrument, described PLC burning program controller is also connected with flame detector with overfire air device, tertiary air device.
Overfire air device described in the utility model and tertiary air device comprise Secondary Air air intake passage, Secondary Air air inlet, tertiary air air intake passage, tertiary air air inlet, are provided with swirl vane on secondary air inlet.
Electromagnetic start ball valve is installed in igniter described in the utility model, and described electromagnetic start ball valve is connected with PLC program controller.
The utlity model has following advantage: 1, adopt burner body, PLC combustion system program controller, coal dust sample analysis instrument, blower fan system, ignition system, flame scanning system, flame smooth combustion apparatus, local circulation water-cooling system, the design of overall adiabatic system integrated structure, in like product, occupy top standard.
2, in an airduct, the strong mixed structure of efficient venturi+spoiler is set, has effectively realized the abundant mixing of wind powder, avoided the problems such as deposition in wind powder course of conveying, pulsation, obstruction, realized the abundant atomization of wind powder.
3, design two-stage air distribution device, secondary, tertiary air classification successively high-speed rotational enter combustion system, classification is combustion-supporting, rationally control combustion process, realize the adjustable controlled of pulverized coal flame ignition temperature, greatly reduce heating power type N compound and generate and concentration of emission, realize controlled burning and clean fume emission.
4, burner integrated structure design facilitates installation and operation and maintenance.
5, fuel goes for II, III bituminous coal, and fuel tolerance is stronger.
6, airduct, a classification have realized the good atomization of wind powder to wind structural design, have improved stability and the efficiency of combustion of coal dust firing, and coal dust burnout rate is approached more than 95%.
7, combustion system program controller and staged air distribution structure optimization excess air factor, reduced boiler exhaust gas heat loss.
8, burner flame nozzle diameter, according to automatically adjusting size by thermic load, is adjusted coal dust torch characteristic dimension.Prevent that flame is adherent, prevent the generation of boiler furnace slagging scorification and coking.
9, combustion system supporting electromagnetism fast opening and closing ball valve and PLC program controller are realized program igniting and flame-out protection automatically jointly, meet the safety requirements of combustion system.
10, control monitoring system complete, realized combustion system igniting, operation, the function such as detection and recovery of protection, fault automatically by host computer and PLC program controller, and with steam generator system interlock protection, meet the efficient operation automatically of security of system.Its product and technology occupy leading position in like product at home.
11, adopt PLC control system, detect online coal powder density, one or two tertiary airs are pressed, air quantity, and boiler tail flue gas oxygen content, combustion chamber draft, boiler heating power parameter are carried out data acquisition and contrast computing, make coal dust firing and therrmodynamic system reach optimal operating condition.
12, flue gas recirculation system is set, makes comparatively broadness of combustion system load regulation range, all burnings of energy efficient stable of coal dust in 30 ~ 110% load ranges, have ensured the stable of steam generator system load and the safety of moving.
13, local circulation water-cooling system can be protected burner reliability service.
14, take spray heat insulating material, reduce burner radiation loss, improve the thermal efficiency.
15, detect data according to coal dust sample analysis instrument and adjust in real time coal dust, air quantity, blast parameter, ensure coal dust efficient burning.
16, the employing of all structures ensures combustion system efficient burning, low nitrogen clean emission, meets energy-saving and environmental protection requirement.
17, adjust the swirl strength of two tertiary airs by lime-ash carbon residue analyzer Real-time Feedback, Optimizing Combustion improves fuel burn-off rate.
Brief description of the drawings
Fig. 1 is the utility model overall structure schematic diagram.
Detailed description of the invention
Efficient low nitrogen full-automatic coal powder burner, comprise that center is to tube cell 1, overfire air device 2, tertiary air device 3, flame jet 4, igniter 5, recirculated water cooler 6, center connects igniter 5 to tube cell 1 front end, tail end connects flame jet 4, center is to being also connected with flame detector on tube cell 1, it is characterized in that: described center is connected with overfire air device 2 and tertiary air device 3 respectively to tube cell 1, center connects recirculated water cooler 7 to tube cell 1 sidepiece, and center is also provided with venturi mixing arrangement and spoiler to tube cell 1 inside.
The utility model also comprises PLC control system, comprise PLC burning program controller 8 and the connected coal dust sample analysis instrument of difference, zirconia determination of oxygen content instrument, fume component analysis instrument, fire box temperature negative pressure assay instrument, described PLC burning program controller 8 is also connected with flame detector with overfire air device 2, tertiary air device 3.
In igniter 5 described in the utility model, electromagnetic start ball valve is installed, described electromagnetic start ball valve is connected with PLC program controller.
Claims (4)
1. new and effective low nitrogen full-automatic coal powder burner, comprise that center is to tube cell, overfire air device, tertiary air device, flame jet, igniter, recirculated water cooler, center connects igniter to tube cell front end, tail end connects flame jet, center is to being also connected with flame detector on tube cell, it is characterized in that: described center is connected with overfire air device and tertiary air device respectively to tube cell, center connects recirculated water cooler to tube cell sidepiece, and center is also provided with venturi mixing arrangement and spoiler to tube cell inside.
2. new and effective low nitrogen full-automatic coal powder burner according to claim 1, it is characterized in that: also comprise PLC control system, comprise PLC burning program controller and the connected coal dust sample analysis instrument of difference, zirconia determination of oxygen content instrument, fume component analysis instrument, fire box temperature negative pressure assay instrument, described PLC burning program controller is also connected with flame detector with overfire air device, tertiary air device.
3. new and effective low nitrogen full-automatic coal powder burner according to claim 1 and 2, it is characterized in that: described overfire air device and tertiary air device comprise Secondary Air air intake passage, Secondary Air air inlet, tertiary air air intake passage, tertiary air air inlet, are provided with swirl vane on secondary air inlet.
4. new and effective low nitrogen full-automatic coal powder burner according to claim 1, is characterized in that: electromagnetic start ball valve is installed in described igniter, and described electromagnetic start ball valve is connected with PLC burning program controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871384.5U CN203687027U (en) | 2013-12-27 | 2013-12-27 | Novel efficient low-nitrogen fully-automatic pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871384.5U CN203687027U (en) | 2013-12-27 | 2013-12-27 | Novel efficient low-nitrogen fully-automatic pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687027U true CN203687027U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871384.5U Expired - Fee Related CN203687027U (en) | 2013-12-27 | 2013-12-27 | Novel efficient low-nitrogen fully-automatic pulverized coal burner |
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| CN (1) | CN203687027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672884A (en) * | 2013-12-27 | 2014-03-26 | 安其云 | Novel efficient low-nitrogen full-automatic pulverized coal burner |
-
2013
- 2013-12-27 CN CN201320871384.5U patent/CN203687027U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672884A (en) * | 2013-12-27 | 2014-03-26 | 安其云 | Novel efficient low-nitrogen full-automatic pulverized coal burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141227 |
|
| EXPY | Termination of patent right or utility model |