CN201521986U - Plasma suspension pulverized coal ignition circulating stable combustion device - Google Patents
Plasma suspension pulverized coal ignition circulating stable combustion device Download PDFInfo
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- CN201521986U CN201521986U CN2009202066135U CN200920206613U CN201521986U CN 201521986 U CN201521986 U CN 201521986U CN 2009202066135 U CN2009202066135 U CN 2009202066135U CN 200920206613 U CN200920206613 U CN 200920206613U CN 201521986 U CN201521986 U CN 201521986U
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- coal
- ignition
- combustion
- fired
- screening
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Abstract
The utility model relates to a plasma suspension pulverized coal ignition circulating stable combustion device comprising a plasma ignition generator, a fire coal crushing screening and conveying system, an ignition combustion chamber and a control system. The control system is respectively connected with the plasma ignition generator and the fire coal crushing screening and conveying system; the fire coal crushing screening and conveying system is connected with the ignition combustion chamber; the combustion device further comprises a combustion-supporting combustion chamber and a stable combustion chamber; and the fire coal crushing screening and conveying system comprises a fire coal crushing and screening device, a pulverized coal and air mixer and a pulverized coal conveying device. With the plasma suspension pulverized coal ignition circulating stable combustion device, the use consumption cost of the conventional heavy combustion igniter can be reduced; and the plasma suspension pulverized coal ignition circulating stable combustion device not only can guarantee the circulating stable combustion but also has no slag formation to influence the stable ignition of the pulverized igniter, and meanwhile, can guarantee that the temperature of jet fire at an outlet of the pulverized coal igniter reaches to the combustion temperature of pulverized coal in a thermal power generating unit combustion boiler.
Description
Technical field
The utility model relates to the igniter that thermal power generation unit burning boiler is adopted, and specifically refers to plasma suspension pulverized coal ignition stable circulation burner.
Background technology
Thermal power generation unit burning boiler igniter is the often starting drives of igniting of a kind of needs.In fact in the use of existing large-scale thermal power machine group burning boiler, boiler always is not in the state of operating at full capacity.Different along with need for electricity and peak of power consumption, burning boiler needs frequent igniting combustion supporting to start.As electricity consumption low peak period at night, for reducing, energy savings consumes, and the quantity combusted of boiler will reduce, the coal-fired minimizing; In order to satisfy the needs of peak of power consumption, should in time increase coal-fired quantity combusted, along with the increase of Coal-fired capacity, the efficiency of combustion of boiler reduces, at this moment usually need be by means of the igniter combustion-assistant ignition.
Firing technique and device that present large-scale thermal power machine group burning boiler is adopted are still used the heavy oil combustion igniting in a large number, and a general black furnace is lighted a fire required heavy oil amount about 2～4 tons, and combustion-assistant ignition also needs about 1～2 ton.Along with the shortage of petroleum resources and constantly riseing of oil price, certainly will increase cost of electricity-generating to thermal power generation corporations.Although part thermal power generation unit burning boiler has adopted heavy oil-coal dust multifuel combustion igniter, reduced the cost of electricity-generating of thermal power generation corporations to a certain extent, but the smooth combustion of its coal dust in igniter, be not detained the carbon slag, and there is such-and-such deficiency in aspect such as ignition temperature always.Also have minority electricity power enterprise to introduce external heavy oil-coal dust multifuel combustion igniter, even introduced the pure combustion ignition device of coal dust, but in actual use, since these pulverized coal ignition devices in design often not well in conjunction with each thermal power generation corporations' burning boiler reality with ature of coal amount (combustion heat value and residue) and characteristic, final result of use is still not ideal enough.
The utility model content
At the prior art above shortcomings, the plasma suspension pulverized coal ignition stable circulation burner that the purpose of this utility model provides that a kind of cost is low, flameholding, carbon-free slag are detained, this burner is used for the igniting of thermal power generation unit burning boiler.
The technical solution of the utility model is achieved in that plasma suspension pulverized coal ignition stable circulation burner, comprise plasma ignition generator, coal-fired crushing and screening induction system, igniter chamber and control system, control system is connected with coal-fired crushing and screening induction system with the plasma ignition generator respectively, it is indoor that the plasma ignition generator is positioned at ignition, and coal-fired crushing and screening induction system links to each other with igniter chamber; This burner also comprises combustion-supporting combustion chamber and smooth combustion chamber, and combustion-supporting chamber front end links to each other with igniter chamber, and the rear end links to each other with the smooth combustion chamber; Described coal-fired crushing and screening induction system comprises coal-fired crushing and screening device, coal-fired powder and air mixing device and coal-fired powder conveying device.
Further, described control system comprises that coal-fired crushing and screening control, coal-fired powder mix conveying control, coal-fired powder IGNITION CONTROL and stable circulation burning fluidisation field and Temperature Field Control four parts with air, coal-fired crushing and screening control section is connected with coal-fired crushing and screening device, coal-fired powder mixes with air carries control section to be connected with air mixing device with coal-fired powder, and coal-fired powder IGNITION CONTROL part is connected with the plasma ignition generator.
The utility model adopts the pure combustion ignition device of coal dust, not only reduce the use consuming cost of existing heavy oil combustion igniter, and overcome the deficiency of igniter in the past, can guarantee the stable circulation burning, not slagging scorification influences the stable ignition of pulverized coal ignition device again, can also guarantee to reach thermal power generation unit burning boiler internal combustion burning of coal temperature in the outlet institute jet flames temperature of pulverized coal ignition device simultaneously.
Description of drawings
Fig. 1-the utility model structural representation.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, from the figure as can be seen, the utility model plasma suspension pulverized coal ignition stable circulation burner, comprise plasma ignition generator, coal-fired crushing and screening induction system, igniter chamber and control system, it is indoor that the plasma ignition generator is positioned at ignition, control system is connected with coal-fired crushing and screening induction system with the plasma ignition generator respectively, and coal-fired crushing and screening induction system links to each other with igniter chamber.This burner also comprises combustion-supporting combustion chamber and smooth combustion chamber, and combustion-supporting chamber front end links to each other with igniter chamber, and the rear end links to each other with the smooth combustion chamber.
Below respectively each several part is introduced.
One, plasma ignition generator
The plasma ignition generator is a prior art, it forms high-intensity magnetic field by the high-power power supply between battery lead plate, the air ionization discharge is formed high-temperature electric arc, the plasma-arc temperature reaches 3000～10000 ℃, the coal-fired powder that will be suspended at last in the igniter chamber is lighted, coal-fired powder after catching fire is sent into combustion-supporting combustion chamber and smooth combustion chamber successively under the effect of spiral suspension thrust, light the fire coal in the station boiler at last.
Two, coal-fired crushing and screening induction system
Coal-fired crushing and screening induction system mainly is made up of coal-fired crushing and screening device, coal-fired powder and air mixing device (cyclone) and coal-fired powder conveying device etc.The effect of coal-fired crushing and screening device is the powder size that coal-fired grinding screen is hanked and adapted with the igniter chamber structure, is beneficial to burning and helical feed formation spiral suspension.The effect of cyclone and coal-fired powder conveying device is coal-fired powder and air to be mixed form different ratios, send into igniter chamber, combustion-supporting combustion chamber and smooth combustion chamber successively, and formation spiral suspension, helping catching fire at igniter chamber, burning is accelerated in easy, combustion-supporting combustion chamber, ignition temperature field, smooth combustion chamber is stable, and its flame temperature that ejects at last helps lighting the fire coal in the station boiler.
Three, combustion chamber part
The combustion chamber part mainly is made up of igniter chamber, combustion-supporting combustion chamber and smooth combustion chamber.Each combustion chamber should guarantee that each combustion chamber internal combustion coal dust forms spiral suspension combustion thing, and the cinder after the burning is not assembled with residual when structural design.
Specifically, the size of igniter chamber, combustion-supporting combustion chamber and smooth combustion cell structure dimensional parameters, should be according to the ature of coal (combustion heat value, residual quantity, granularity) of selected fire coal, coal-air ratio, ciculation fluidized of igniting smooth combustion and temperature field require, plasma ignition system (device) exports working conditions such as flame injection temperation and flow velocity, the research gimmick that the theoretical analysis method of employing Combustion technology of circulating fluidized combines with experiment, the finally main structure parameters of definite plasma combustion igniter.
Four, control system
The effect of control system is to guarantee that this burner can realize automatic regulatory function according to different operating modes, makes it can smooth combustion and light fire coal in the station boiler.Control system mainly mixes conveying control, coal-fired powder IGNITION CONTROL and stable circulation burning fluidisation field with air by coal-fired crushing and screening control, coal-fired powder and Temperature Field Control four parts are formed, coal-fired crushing and screening control section is connected with coal-fired crushing and screening device, coal-fired powder mixes with air carries control section to be connected with air mixing device with coal-fired powder, and coal-fired powder IGNITION CONTROL part is connected with the plasma ignition generator.
The main working condition parameter of the utility model is as follows:
An ajutage wind speed 24.0m/s～40.0m/s, 20 ℃ of wind pushing temperatures, an air output 14.4m
3/ h～20.0m
3/ h; Secondary air channel wind speed 45m/s～60m/s, secondary blast amount 40.0m
3/ h～60.0m
3/ h; Coal dust amount 3.5t/h; Coal-air ratio 0.2～0.5, vent wind speed 60m/s (spout temperature 1100 ℃ time); Plasma combustion igniter burning resistance 500Pa.
The utility model basic functional principle and process: under the control of control system, mix by rational proportion with air through the coal-fired powder of pulverizing and screen, to mix coal-fired powder by induction system and send into igniter chamber, make its burning by plasma ignition generator discharge igniting, and then enter the combustion-supporting and indoor smooth combustion of smooth combustion in combustion-supporting combustion chamber successively, form spiral suspension combustion thing in each combustion chamber, enter the fire coal in the boiler point combusting boiler at last, thereby reduce the use consuming cost of existing heavy oil combustion igniter.
Claims (2)
1. plasma suspension pulverized coal ignition stable circulation burner, comprise plasma ignition generator, coal-fired crushing and screening induction system, igniter chamber and control system, control system is connected with coal-fired crushing and screening induction system with the plasma ignition generator respectively, it is indoor that the plasma ignition generator is positioned at ignition, coal-fired crushing and screening induction system links to each other with igniter chamber, it is characterized in that: this burner also comprises combustion-supporting combustion chamber and smooth combustion chamber, combustion-supporting chamber front end links to each other with igniter chamber, and the rear end links to each other with the smooth combustion chamber; Described coal-fired crushing and screening induction system comprises coal-fired crushing and screening device, coal-fired powder and air mixing device and coal-fired powder conveying device.
2. plasma suspension pulverized coal ignition stable circulation burner according to claim 1, it is characterized in that: described control system comprises that coal-fired crushing and screening control, coal-fired powder mix conveying control, coal-fired powder IGNITION CONTROL and stable circulation burning fluidisation field and Temperature Field Control four parts with air, coal-fired crushing and screening control section is connected with coal-fired crushing and screening device, coal-fired powder mixes with air carries control section to be connected with air mixing device with coal-fired powder, and coal-fired powder IGNITION CONTROL part is connected with the plasma ignition generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202066135U CN201521986U (en) | 2009-10-10 | 2009-10-10 | Plasma suspension pulverized coal ignition circulating stable combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202066135U CN201521986U (en) | 2009-10-10 | 2009-10-10 | Plasma suspension pulverized coal ignition circulating stable combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521986U true CN201521986U (en) | 2010-07-07 |
Family
ID=42508162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202066135U Expired - Fee Related CN201521986U (en) | 2009-10-10 | 2009-10-10 | Plasma suspension pulverized coal ignition circulating stable combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521986U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197371A (en) * | 2014-07-28 | 2014-12-10 | 安徽艾可蓝节能环保科技有限公司 | Semi-closed small-space step-type ignition control method |
| CN106287811A (en) * | 2016-08-31 | 2017-01-04 | 福建省鸿山热电有限责任公司 | The method that two generating set plasma ignition systems share a set of electrical source of power |
-
2009
- 2009-10-10 CN CN2009202066135U patent/CN201521986U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197371A (en) * | 2014-07-28 | 2014-12-10 | 安徽艾可蓝节能环保科技有限公司 | Semi-closed small-space step-type ignition control method |
| CN106287811A (en) * | 2016-08-31 | 2017-01-04 | 福建省鸿山热电有限责任公司 | The method that two generating set plasma ignition systems share a set of electrical source of power |
| CN106287811B (en) * | 2016-08-31 | 2019-08-30 | 福建省鸿山热电有限责任公司 | The method that two generating set plasma ignition systems share a set of electrical source of power |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20101010 |