CN105066123A - Plasma ignition composite multi-channel combustion device for rotary kiln - Google Patents
Plasma ignition composite multi-channel combustion device for rotary kiln Download PDFInfo
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- CN105066123A CN105066123A CN201510504701.3A CN201510504701A CN105066123A CN 105066123 A CN105066123 A CN 105066123A CN 201510504701 A CN201510504701 A CN 201510504701A CN 105066123 A CN105066123 A CN 105066123A
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- Prior art keywords
- burner
- plasma ignition
- plasma
- rotary kiln
- ignition device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/02—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel
Abstract
The invention discloses a plasma ignition composite multi-channel combustion device for a rotary kiln. The plasma ignition composite multi-channel combustion device for the rotary kiln comprises a combustor and a combustor stand. The side edge of the combustor is provided with a clean air connector and a coal air connector. The end of the combustor is provided with a plasma ignition device. The plasma ignition device is fixed to the combustor through a plasma ignition system stand. The plasma ignition device is connected with a plasma generator. The lower end of the plasma ignition device is provided with a working medium gas connector. Pipelines which are connected with the plasma ignition device and the plasma generator are each provided with multiple cooling water connectors. Due to the fact that plasmas generated by the plasma generator are sent into the combustor, the oil-free ignition is achieved, and the purposes of energy saving and pollutant discharge reducing are achieved; and meanwhile, the plasma generator is ingeniously combined with the combustor, so that the plasma generator and the combustor form an integrated device, the technology procedure is simplified, the combustion efficiency is improved, the malfunction points are decreased, and the automation degree and the system safety are improved.
Description
Technical field
The present invention relates to a kind of rotary kiln plasma ignition compound multichannel burner, belong to Industrial Stoves energy-saving environmental protection device technical field.
Background technology
As everyone knows, the industry such as building materials, metallurgy is " three is high " industry, that is: high pollution, high energy consumption, maximum discharge.Build resources conservation, these industries of harmonious society of energy-conserving and environment-protective are commanders of an advance unit or vanguard.Raw coal is still the main fuel of China's building materials, metallurgical industry kiln within a very long time.But the kiln stage is dried in the igniting after newly-built kiln is debugged and stopped kiln maintenance, in order to light a fire and maintain stable burning, the general diesel oil that adopts is lighted a fire with combustion-supporting.Ordinary burner is compounded with oil ignition device wherein, supporting fuel reservoir and fuel control unit etc., Initial Stage after Ignition adopts diesel combustion, duration about 32h, when kiln end temperature is after 200 DEG C of constant temperature, start coal-feeding device and spray into a small amount of coal dust, coal powder injection speed, greatly about 0.5t/h ~ 1.0t/h, adopts mode that is oily, coal multifuel combustion to continue to heat up, duration is approximately 12h, when kiln end temperature stablizes 500 DEG C, stop oil spout, formally drop into coal dust firing.For the cement rotary kiln of 2500t/d, the igniting baking kiln stage of new kiln system debugging is generally consumed diesel oil and is about 40t ~ 60t, roars of laughter kiln of lighting a fire after each overhaul consumes diesel oil and is about 10t ~ 15t, and the igniting roars of laughter kiln consumption diesel oil that daily production stops kiln maintenance is 2t ~ 3t.According to annual 1 overhaul, stop kiln for 6 times and calculate, year consumes diesel oil and is about 22t ~ 33t.According to by the end of the end of the year 2014, accumulative 1758 of whole nation new type nonaqueous cement production line, its average size is 3350t/d, consume igniting diesel oil 36t average single line year to calculate, national cement industry year consumes diesel oil 6.3 ten thousand t, needs to consume a large amount of oil fuels, this more exacerbates the imbalance between supply and demand of China's oil, therefore, development energy-saving and environmental protection, efficiently energy-conserving and environment-protective new technology are the most important things of China's building materials and metallurgical industry development.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of rotary kiln plasma ignition compound multichannel burner plasma ignition device and burner are combined into one, its energy-conserving and environment-protective, and intelligence degree is high.
In order to achieve the above object, technical scheme of the present invention is as follows: a kind of rotary kiln plasma ignition compound multichannel burner, comprises burner and be provided with clean wind interface and coal wind interface on the burner arm supporting burner, described burner side; The end being positioned at burner is provided with plasma ignition device, and described plasma ignition device is fixed on the burner by plasma ignition system support; What be connected with described plasma ignition device is plasma generator, the lower end of described plasma ignition device is provided with Working medium gas interface, the pipeline be connected with described plasma ignition device and plasma generator is respectively arranged with several cooling water connectors, rotary kiln burner and plasma ignition device combine by the plasma ignition compound multichannel burner of this patent, only can complete the function of the different phases such as rotary kiln igniting, smooth combustion and normal combustion with a device.
As preferably, described burner is multichannel burner, described plasma ignition device is low-voltage plasma igniter, described burner is provided with clean wind interface, coal wind interface or other interface, low-voltage plasma igniter is connected with multichannel burner, by the high temperature that plasma generator produces, high enthalpy plasma introduces the central combustion chamber of multicenter combustor by passage, achieve high-temperature plasma and wind, effective contact of coal or wind coal mixture, its high temperature makes pulverized coal particle be rapidly heated and produces explosion, being lighted rapidly after discharging the volatilization of a large amount of coal dust sprays in kiln, achieve the ignition of coal, treat in rotary kiln, to reach certain temperature, namely after forming the flame of smooth combustion, stop the work of plasma generator, according to the normal operating requirement of multicenter combustor, progressively increase pulverized coal consumption, realize the burning of coal dust.
As preferably, described plasma generator adopts the mode of DC arc discharge to produce plasma, injects burner at a high speed, the coal dust in burner is lighted rapidly.
As preferably, the rated power of described plasma ignition device is 20kW ~ 200kW, and its adjustment ratio is 1:10.
As preferably, it is 2.5t/h ~ 25t/h that described burner maximum feeds coal amount, and its adjustment ratio is 1:10.
As preferably, the position that described burner stretches into kiln head cover and kilneye is provided with heat resisting steel.
Beneficial effect of the present invention:
(1) plasma intelligence self-ignition device and rotary kiln multicenter combustor are combined, only can complete the function of the different phases such as rotary kiln igniting, smooth combustion and normal combustion with a device;
(2) its technique is simple, easy for operation, safe and reliable, and firing up is fast, and the thermal efficiency is high;
(3) achieve non-oil ignition, save a large amount of ignition oils;
(4) better can adapt to the heating curve requirement of rotary kiln, especially at Initial Stage after Ignition, it is far superior to oil gun and wood ignition to the goodness of fit of temperature rise curve, is convenient to control temperature, is more conducive to protection kiln brick;
(5) plasma burner burn-off rate is high, compares conventional oily coal multifuel combustion and saves coal dust, decrease environmental pollution, reduce cost;
(6) have the function reducing NOx, carry out anaerobism burning in advance, Plasma Oilless Ignition Technology brings new theory and change to the igniting of cement industry, will realize the energy-conservation new situation of cement industry.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein: 1. burner, 2. burner arm, 3. clean wind interface, 4. coal wind interface, 5. plasma ignition device, 6. plasma generator, 7. Working medium gas interface, 8. cooling water connector, 9. plasma ignition system support.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further detailed explanation.
As shown in Figure 1, a kind of rotary kiln plasma ignition compound multichannel burner, comprising burner 1 and the burner arm 2 for supporting burner 1, described burner 1 side being provided with clean wind interface 3 and coal wind interface 4; The end being positioned at burner 1 is provided with plasma ignition device 5, and described plasma ignition device 5 is fixed on burner 1 by plasma ignition system support 9; What be connected with described plasma ignition device 5 is plasma generator 6, the lower end of described plasma ignition device 5 is provided with Working medium gas interface 7, the pipeline be connected with described plasma ignition device 5 and plasma generator 6 is respectively arranged with several cooling water connectors 8, burner 1 and plasma ignition device 5 combine by the multicenter combustor device of this patent, only can complete the function of the different phases such as rotary kiln igniting, smooth combustion and normal combustion with a device.
Described burner is multichannel burner, described plasma ignition device 5 is low-voltage plasma igniter, described burner 1 is provided with clean wind interface 3, coal wind interface 4 or other interface, low-voltage plasma igniter is connected with multichannel burner, by the high temperature that plasma generator produces, high enthalpy plasma introduces the central combustion chamber of multicenter combustor by passage, achieve high-temperature plasma and wind, effective contact of coal or wind coal mixture, its high temperature makes pulverized coal particle be rapidly heated and produces explosion, being lighted rapidly after discharging the volatilization of a large amount of coal dust sprays in kiln, achieve the ignition of coal, treat in rotary kiln, to reach certain temperature, namely after forming the flame of smooth combustion, stop the work of plasma generator, according to the normal operating requirement of multicenter combustor, progressively increase pulverized coal consumption, realize the burning of coal dust.
Described plasma generator adopts the mode of DC arc discharge to produce plasma, injects burner at a high speed, the coal dust in burner is lighted rapidly.
The rated power of described plasma ignition device is 20kW ~ 200kW, and its adjustment ratio is 1:10; Maximum hello the coal amount of described burner is 2.5t/h ~ 25t/h, and its adjustment ratio is 1:10.
The position that described burner stretches into kiln head cover and kilneye is provided with heat resisting steel.
Its operation principle is: low-voltage plasma igniter is connected with multichannel burner, by the high temperature that plasma generator produces, high enthalpy plasma introduces the central combustion chamber of multicenter combustor by passage, realize high-temperature plasma and wind, effective contact of coal or wind coal mixture, its high temperature makes pulverized coal particle be rapidly heated and produces explosion, being lighted rapidly after discharging the volatilization of a large amount of coal dust sprays in kiln, realize the ignition of coal, treat in rotary kiln, to reach certain temperature, namely after forming the flame of smooth combustion, stop the work of plasma generator, according to the normal operating requirement of multicenter combustor, progressively increase pulverized coal consumption, realize the burning of coal dust.
Plasma ignition device and multichannel burner are combined into one, and suspend in midair or are supported on walking dolly.The nozzle of burner and the relative position of kilneye end face and with kilneye center, namely cross section relative position can regulate with the governor motion on walking dolly.
Adopt the present invention to carry out technological improvement to existing rotary kiln burner, its wide market, energy-saving potential is huge, and economic benefit is obvious.
For 2500t/d clinker production line burner, roars of laughter kiln of lighting a fire after each overhaul consumes diesel oil and is about 10t ~ 15t, and the igniting roars of laughter kiln consumption diesel oil that daily production stops kiln maintenance is 2t ~ 3t.According to annual 1 overhaul, stop kiln for 6 times and calculate, year consumes diesel oil and is about 22t ~ 33t, amounts to standard coal 32.1t ~ 48.1t.Adopt patent device igniting to dry kiln, a power consumption, year consumes electric energy 3.6 ~ 5.4 ten thousand kW.h, and amount to standard coal 4.4t ~ 6.6t, both offset, and year saves standard coal 27.7t ~ 41.5t; Each igniting is dried kiln and is shortened time 2h ~ 4h, can produce grog 1250t ~ 2500t year, cogeneration station year multiple electric 4.8 ~ 9.6 ten thousand kW.h more, and year saves standard coal 5.9t ~ 11.8t.Add up to year to save standard coal 33.6t ~ 53.3t, year economize on electricity 1.2 ~ 4.2 ten thousand kW.h, year increases clinker 1250t ~ 2500t, and year reduces CO2 discharge capacity 87t ~ 139t, and year reduces SO
2discharge capacity 0.81t ~ 1.28t, year minimizing increases total profit more than 25 ~ 450,000 yuan NOx discharge 0.24t ~ 0.37t, wall scroll 2500t/d cement producing line year, economic benefit and environmental benefit obvious.
This patent is sent in multicenter combustor by the high temperature produced by plasma generator, high enthalpy plasma, achieves non-oil ignition, reaches the object of economize energy and decreasing pollution discharge; Simultaneously, plasma generator and rotary kiln special coal powder burner are carried out ingenious compound, make it to become integration apparatus, same burner realizes intelligent ignition and normal coal dust firing, simplify technological process, improve efficiency of combustion, decrease trouble point, improve automaticity and security of system.Achieve truly from cold state spark, smooth combustion to the automation of this process of normal combustion and intellectuality, eliminate the potential safety hazard of fuel oil, simplify technological process, shorten the furnace heating-up time, improve the running rate of firing system, improve the quality of production, reach energy-saving and environmental protection, safe, efficient, economic object.
Claims (6)
1. a rotary kiln plasma ignition compound multichannel burner, it is characterized in that, comprising burner (1) and the burner arm (2) for supporting burner (1), described burner (1) side being provided with clean wind interface (3) and coal wind interface (4); The end being positioned at burner (1) is provided with plasma ignition device (5), and described plasma ignition device (5) is fixed on burner (1) by plasma ignition system support (9); What be connected with described plasma ignition device (5) is plasma generator (6), the lower end of described plasma ignition device (5) is provided with Working medium gas interface (7), the pipeline be connected is respectively arranged with several cooling water connectors (8) with described plasma ignition device (5) and plasma generator (6).
2. rotary kiln plasma ignition compound multichannel burner according to claim 1, it is characterized in that, described burner (1) is multichannel burner, and described plasma ignition device (5) is low-voltage plasma igniter.
3. rotary kiln plasma ignition compound multichannel burner according to claim 2, is characterized in that, described plasma generator (6) adopts the mode of DC arc discharge to produce plasma.
4. rotary kiln plasma ignition compound multichannel burner according to claim 3, it is characterized in that, the rated power of described plasma ignition device (5) is 20kW ~ 200kW, and its adjustment ratio is 1:10.
5. rotary kiln plasma ignition compound multichannel burner according to claim 4, is characterized in that, the maximum coal amount of feeding of described burner (1) is at 2.5t/h ~ 25t/h, and its adjustment ratio is 1:10.
6. rotary kiln plasma ignition compound multichannel burner according to claim 5, is characterized in that, the position that described burner (1) stretches into kiln head cover and kilneye is provided with heat-resisting steel layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504701.3A CN105066123A (en) | 2015-08-17 | 2015-08-17 | Plasma ignition composite multi-channel combustion device for rotary kiln |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504701.3A CN105066123A (en) | 2015-08-17 | 2015-08-17 | Plasma ignition composite multi-channel combustion device for rotary kiln |
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| CN105066123A true CN105066123A (en) | 2015-11-18 |
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| CN201510504701.3A Pending CN105066123A (en) | 2015-08-17 | 2015-08-17 | Plasma ignition composite multi-channel combustion device for rotary kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000225A (en) * | 2018-08-27 | 2018-12-14 | 东平中联美景水泥有限公司 | A kind of cement kiln combustion device intelligence is reciprocal to adjust device and its application |
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| CN2521510Y (en) * | 2002-02-06 | 2002-11-20 | 烟台龙源电力技术有限公司 | Plasma ignitor for directly-igniting pulverized-coal-fuel boiler |
| CN102364248A (en) * | 2011-09-28 | 2012-02-29 | 南京创能电力科技开发有限公司 | Novel low temperature plasma direct-current pulverized coal ignition combustor |
| CN102721049A (en) * | 2012-07-11 | 2012-10-10 | 曲大伟 | Plasma thermal cracking combustion apparatus of combination type pulverized coal furnace |
| CN203177164U (en) * | 2012-03-28 | 2013-09-04 | 曲大伟 | Rotary kiln coal dust plasma ignition device with flow rotating/equalizing function |
| CN203286562U (en) * | 2013-05-07 | 2013-11-13 | 国家电网公司 | Energy-saving type plasma pulverized coal ignition burner |
| CN205245158U (en) * | 2015-08-17 | 2016-05-18 | 南京君铎环保科技有限公司 | Compound multichannel burner of plasma ignition for rotary kiln |
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2015
- 2015-08-17 CN CN201510504701.3A patent/CN105066123A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2521510Y (en) * | 2002-02-06 | 2002-11-20 | 烟台龙源电力技术有限公司 | Plasma ignitor for directly-igniting pulverized-coal-fuel boiler |
| CN102364248A (en) * | 2011-09-28 | 2012-02-29 | 南京创能电力科技开发有限公司 | Novel low temperature plasma direct-current pulverized coal ignition combustor |
| CN203177164U (en) * | 2012-03-28 | 2013-09-04 | 曲大伟 | Rotary kiln coal dust plasma ignition device with flow rotating/equalizing function |
| CN102721049A (en) * | 2012-07-11 | 2012-10-10 | 曲大伟 | Plasma thermal cracking combustion apparatus of combination type pulverized coal furnace |
| CN203286562U (en) * | 2013-05-07 | 2013-11-13 | 国家电网公司 | Energy-saving type plasma pulverized coal ignition burner |
| CN205245158U (en) * | 2015-08-17 | 2016-05-18 | 南京君铎环保科技有限公司 | Compound multichannel burner of plasma ignition for rotary kiln |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000225A (en) * | 2018-08-27 | 2018-12-14 | 东平中联美景水泥有限公司 | A kind of cement kiln combustion device intelligence is reciprocal to adjust device and its application |
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Application publication date: 20151118 |
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