CN103017190B - Oxygenating device igniting with little oil or without oil - Google Patents
Oxygenating device igniting with little oil or without oil Download PDFInfo
- Publication number
- CN103017190B CN103017190B CN201310013433.6A CN201310013433A CN103017190B CN 103017190 B CN103017190 B CN 103017190B CN 201310013433 A CN201310013433 A CN 201310013433A CN 103017190 B CN103017190 B CN 103017190B
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- oxygen
- cover
- pressure arc
- igniting
- aeration device
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- 230000001706 oxygenating effect Effects 0.000 title abstract 5
- 239000007789 gas Substances 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 93
- 229910052760 oxygen Inorganic materials 0.000 claims description 93
- 239000001301 oxygen Substances 0.000 claims description 93
- 238000005273 aeration Methods 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 13
- 229910001882 dioxygen Inorganic materials 0.000 abstract 6
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010304 firing Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002802 bituminous coal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- Y02E20/344—
Landscapes
- Plasma Technology (AREA)
Abstract
The invention relates to an oxygenating device igniting with a little oil or without oil. The oxygenating device comprises a plasma generator, an internal pressure arc sleeve and an external pressure arc sleeve are radially arranged at the front end of the plasma generator sequentially from inside to outside, a wear-resisting protecting cover connected with the external pressure arc sleeve is arranged on the outer side of the plasma generator, an internal sleeve connected with the internal pressure arc sleeve is arranged between the wear-resisting protecting cover and the plasma generator, an annular oxygen gas passage is formed between the internal sleeve and the wear-resisting protecting cover as well as between the internal pressure arc sleeve and the external pressure arc sleeve, the wear-resisting protecting cover is provided with an oxygen gas inlet section connected with the annular oxygen gas passage, an igniting cover is further arranged at the front end of the oxygenating device, a gas flow passage communicated with the oxygen gas passage is arranged inside the side wall of the igniting cover, and an outlet of the gas flow passage leads to a flame area ejected from the igniting cover. The oxygenating device is simple in structure and convenient for power plant modification and forms the annular oxygen gas passage by modifying the structure of the wear-resisting protecting cover of the plasma generator so that combustion-supporting oxygen gas is brought in.
Description
Technical field
The present invention relates to a kind of oxygenation equipment, particularly relate to the aeration device of a kind of few oil or non-oil ignition.
Background technology
At present, most domestic thermal power plant all have employed plasma or the igniting technology with less oil of energy-conserving and environment-protective.According to market feedback information, plasma and igniting technology with less oil are better for the bituminous coal adaptability that dry ash free basis fugitive constituent is higher, and the adaptability for coals such as the anthracite of fugitive constituent below 10%, meager coal and colms is relative poor.Therefore, for the thermal power plant using low-volatile coal, plasma and igniting technology with less oil have improvement to be upgraded.In the engineer applied of reality, plasma and igniting technology with less oil mainly have following deficiency:
The first, higher to the requirement of ature of coal.Ature of coal dependence is comparatively large, at present in a large amount of case histories at plasma and tiny-oil ignition of successful Application, and the station boiler that majority is is steam coal with bituminous coal and brown coal.And colm volatile content is low, ignition temperature is high, flame propagation velocity is low, when lighting, need higher ignition heat.Existing plasma and igniting technology with less oil incendiary source finite energy, be difficult to colm to light, therefore still need to throw large gauging when colm is lighted a fire combustion-supporting, oil-saving effect is very limited.
The second, higher to working condition requirement.During ignition of the boiler, usually need to adopt higher coal powder density, lower wind speed, when operating mode changes, easily occur unstable combustion, fire extinguishing phenomenon even occurs.
3rd, the efficiency of combustion of coal dust is lower.Practical operation situation shows, and in ignition of the boiler process, the phosphorus content of flying dust is high, and a large amount of coal dust does not have after-flame, and this can cause damage to the follow-up equipment of boiler, has a strong impact on security and the economy of boiler.Show according to the study, oxygen can reduce fuel ignition temperature, improves the blackness of combustion zone flame, improve flame transmission speed.Therefore, Many researchers introduces comburant oxygen in plasma-ignition technique.As Chinese patent " oxygen enrichment plasma non-oil ignition smooth burning method and device " (CN201110105569.0) and " a kind of plasma oil-free ignition combustor " (CN201110442988.3).
Patent CN201110105569.0 as shown in Figure 1, oxygen spout 16 is located at the upstream of plasma generator 9 along First air airflow direction, oxygen is sprayed in premixed combustion pipe 12 and after First air coal dust premix, makes primary wind and powder be oxygen enrichment state, then through plasma ignition coal dust.Although this technology can play the effect of oxygen-enriched combustion-supporting, but compared with the oxygen amount sprayed into, First air coal dust amount is larger, first mix with First air after oxygen sprays into, then just coal dust firing region can be entered, after premix, oxygen concentration is seriously diluted, and combustion-supporting effect reduces, and the effect of pure oxygen combustion-supporting is had a greatly reduced quality.
Patent CN201110442988.3 as shown in Figure 2, the inventor of this patent is at the annular oxygen sleeve 13 of plasma generator 9 peripheral hardware one, spray into oxygen in plasma-arc region, in burner, form local oxygen-rich area during igniting, form the oxygen-enriched combusting of coal dust.There is following problem in the disclosure technology: heating region temperature is higher than 4000K, and the high activity characteristic of plasma in addition, can light the coal dust entering this region easily, add oxygen herein, coal dust firing can be caused too violent, easily cause barrel overtemperature, even burner scaling loss.
Colm fugitive constituent is low, and flame propagation velocity is comparatively slow, the key of colm igniting be ignition zone catch fire after the burning of follow-up coal dust.For usual plasma and the deficiency of igniting technology with less oil and the defect of existing oxygen-enriched combustion-supporting firing technique, the present invention supplements pure oxygen after adopting coal dust to catch fire in burner igniting cover immediately, concentrates the mode in the middle of spray oxygen to flame to solve the problem in igniting cover exit.
Summary of the invention
The object of the invention is the deficiency that exists for current plasma and igniting technology with less oil and the aeration device of a kind of few oil or non-oil ignition is provided.
For achieving the above object, the invention provides the aeration device of a kind of few oil or non-oil ignition, comprise plasma generator, the front end edge radial direction of described plasma generator is provided with interior pressure arc cover and external pressure arc cover from inside to outside successively, the outside of plasma generator is provided with overlaps with described external pressure arc the wear-resistance protective sleeve be connected, also be provided with between described wear-resistance protective sleeve and plasma generator and overlap with described interior pressure arc the inner sleeve be connected, described inner sleeve, interior pressure arc cover and described wear-resistance protective sleeve, the oxygen channel of annular is formed between external pressure arc cover, described wear-resistance protective sleeve is provided with the oxygen air inlet section be connected with described oxygen channel, the front end of described aeration device is also provided with igniting cover, the interior of described igniting cover is provided with the gas flow be connected with described oxygen channel, the flame region sprayed from described igniting cover is led in the outlet of described gas flow.
Preferably, the end of described igniting cover is also provided with the oxygen plug in oxygen outflow direction in the described gas flow of adjustment.
Preferably, described aeration device also comprises the oxygen channel joint connecting described oxygen channel and igniting cover, and the two ends of described oxygen channel joint are equipped with connector.
Preferably, described external pressure arc cover radially has some radial direction through hole, and described radial direction through hole is connected with the connector of oxygen channel joint rear end.
Preferably, have some axially extending bores vertically in the sidewall of described igniting cover, described axially extending bore is connected with the connector of oxygen channel joint front end.
Preferably, described oxygen channel joint and described igniting cover, external pressure arc cover weld together.
Preferably, described oxygen plug control oxygen spray into angle and central shaft is 0 ~ 80 °.
Based on technique scheme, advantage of the present invention is:
The present invention forms annular oxygen channel thus access combustion oxygen by the structure of change plasma generator wear-resistance protective sleeve, and structure is simple, is convenient to repowering.The present invention adopts the mode of symmetrical, the concentrated jet of multiple spot to carry out oxygenation, makes oxygen focus utilization, is easy to the burning situation forming pure oxygen, has played the fluxing properties of oxygen to greatest extent.Aeration device of the present invention is adapted to be mounted within all internal combustion type pulverized coal burners, comprises the inside of plasma and little oil burner.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is a kind of structural representation of prior art;
Fig. 2 is the structural representation of another kind of prior art;
Fig. 3 is the assembly figure of aeration device of the present invention;
Wherein: 1, oxygen plug 2, igniting cover 3, oxygen channel joint 4, external pressure arc overlap 5 inner sleeves 6, oxygen channel 7, wear-resistance protective sleeve 8, oxygen air inlet section 9, plasma generator 10, interior pressure arc cover 12, premixed combustion pipe 13, oxygen sleeve 16, oxygen spout.
Detailed description of the invention
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
See Fig. 3, the preferred embodiment of the aeration device of a kind of few oil of the present invention shown in it or non-oil ignition, aeration device of the present invention comprises plasma generator 9, the front end edge radial direction of described plasma generator 9 is provided with interior pressure arc cover 10 and external pressure arc cover 4 from inside to outside successively, between interior pressure arc cover 10 and external pressure arc cover 4, there is the negotiable gap of gas, as shown in Figure 3; The outside of plasma generator 9 is provided with overlaps 4 wear-resistance protective sleeves be connected 7 with described external pressure arc, also be provided with between described wear-resistance protective sleeve 7 and plasma generator 9 and overlap 10 inner sleeves be connected 5 with described interior pressure arc, described inner sleeve 5, interior pressure arc cover 10 and described wear-resistance protective sleeve 7, external pressure arc overlap the oxygen channel 6 forming annular between 4, as shown in Figure 3; Described wear-resistance protective sleeve 7 is provided with the oxygen air inlet section 8 be connected with described oxygen channel 6, oxygen from Fig. 3 A to entering described oxygen air inlet section 8, the front end of described aeration device is also provided with igniting cover 2, the interior of described igniting cover 2 is provided with the gas flow be connected with described oxygen channel 6, the flame region sprayed from described igniting cover 2, the flame region as shown in two D lines in Fig. 3 are led in the outlet of described gas flow.
Further, the end of described igniting cover 2 is also provided with the oxygen plug 1 in oxygen outflow direction in the described gas flow of adjustment.Preferably, described oxygen plug 1 control oxygen spray into angle and central shaft is 0 ~ 80 °, more preferably, oxygen plug 1 angle is machinery or the adjustable structure of electronics, thus can control oxygen better spray into direction and angle.
As shown in Figure 3, described aeration device also comprises the oxygen channel joint 3 connecting described oxygen channel 6 and igniting cover 2, and the two ends of described oxygen channel joint 3 are equipped with connector.In the present invention, the direction of oxygen ejection is " front ", and the direction that oxygen enters is " afterwards ", and as shown in Figure 3, left side is " front ", and right side is " afterwards ".
In the present invention, described external pressure arc cover 4 radially has some radial direction through hole, and described radial direction through hole is connected with the connector of oxygen channel joint 3 rear end.Preferably, have some axially extending bores vertically in the sidewall of described igniting cover 2, described axially extending bore is connected with the connector of oxygen channel joint 3 front end.More preferably, these radial direction through hole and axially extending bore to be all centrosymmetric setting relative to the axle center of plasma generator 9, make the present invention that the mode of symmetrical, the concentrated jet of multiple spot can be adopted to carry out oxygenation thus, make oxygen focus utilization, be easy to the burning situation forming pure oxygen, play the fluxing properties of oxygen to greatest extent.
In order to easily manufactured, preferably, described oxygen channel joint 3 and described igniting cover 2, external pressure arc overlap 4 and weld together.
Particularly, operation principle of the present invention and the course of work are:
As shown in Figure 3, the present invention, on the basis of original plasma generator wear-resistance protective sleeve 7, increases by an inner sleeve 5; Inner sleeve 5, wear-resistance protective sleeve 7, interior pressure arc cover 10, external pressure arc cover 4 and oxygen air inlet section 8 constitute an annular oxygen channel 6.External pressure arc cover 4 radially has several radial direction through hole, after this radial direction through hole aligns with the connector of oxygen channel joint 3 rear end, oxygen channel joint 3 is welded on external pressure arc cover 4.Igniting cover 2 is arranged in pressure arc cover front end, and its sidewall has some axially extending bores vertically, and after this axially extending bore aligns with the connector of oxygen channel joint 3 front end, igniting cover 2 and oxygen channel joint 3 weld together and be fixed.
Adding oxygen plug 1 in the exit of igniting cover 2 sidewall inner via hole, by changing the shape of oxygen plug 1, the direction that oxygen can be regulated to spray into and angle, thus meeting different igniting working condition requirements.
Oxygen of the present invention is accessed from peripheral oxygen channel (not shown) by oxygen air inlet section 8, enter in the lateral through aperture of igniting cover 2 along oxygen channel 6, finally be injected to from the outlet C (as shown in Figure 3) of igniting cover 2 in the middle of the flame sprayed in igniting cover, enhance the burning of coal dust, for catching fire of follow-up coal dust provides new high-energy ignition source, wherein, the First air of boiler enters from the B in Fig. 3.
The present invention is by perforate in the sidewall of igniting cover 2, pure oxygen is introduced in igniting cover outlet C place ejection, oxygen jet is directly injected to the flame (D region) of ejection in igniting cover 2, avoiding primary wind and powder B to the dilution of pure oxygen and too early oxygen is joined high-temperature electric arc and while scaling loss burner wall, because pure oxygen is directly injected in the middle of flame, improve the combustion-supporting effect of oxygen, enhance coal dust firing, for catching fire of follow-up coal dust improves new high-energy ignition source.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (7)
1. the aeration device of few oil or non-oil ignition, comprise plasma generator (9), the front end edge radial direction of described plasma generator (9) is provided with interior pressure arc cover (10) and external pressure arc cover (4) from inside to outside successively, the outside of plasma generator (9) is provided with the wear-resistance protective sleeve (7) be connected with described external pressure arc cover (4), it is characterized in that: between described wear-resistance protective sleeve (7) and plasma generator (9), be also provided with the inner sleeve (5) be connected with described interior pressure arc cover (10), described inner sleeve (5), interior pressure arc cover (10) and described wear-resistance protective sleeve (7), the oxygen channel (6) of annular is formed between external pressure arc cover (4), described wear-resistance protective sleeve (7) is provided with the oxygen air inlet section (8) be connected with described oxygen channel (6), the front end of described aeration device is also provided with igniting cover (2), the interior of described igniting cover (2) is provided with the gas flow be connected with described oxygen channel (6), the flame region sprayed from described igniting cover (2) is led in the outlet of described gas flow.
2. aeration device according to claim 1, is characterized in that: the end of described igniting cover (2) is also provided with oxygen in the described gas flow of adjustment and flows out the oxygen plug (1) in direction.
3. aeration device according to claim 1 and 2, is characterized in that: described aeration device also comprises the oxygen channel joint (3) connecting described oxygen channel (6) and igniting cover (2), and the two ends of described oxygen channel joint (3) are equipped with connector.
4. aeration device according to claim 3, is characterized in that: on described external pressure arc cover (4), radially have some radial direction through hole, described radial direction through hole is connected with the connector of oxygen channel joint (3) rear end.
5. aeration device according to claim 4, is characterized in that: have some axially extending bores vertically in the sidewall of described igniting cover (2), and described axially extending bore is connected with the connector of oxygen channel joint (3) front end.
6. aeration device according to claim 5, is characterized in that: described oxygen channel joint (3) and described igniting cover (2), external pressure arc cover (4) weld together.
7. aeration device according to claim 2, is characterized in that: described oxygen plug (1) control oxygen spray into angle and central shaft is 0 ~ 80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310013433.6A CN103017190B (en) | 2013-01-15 | 2013-01-15 | Oxygenating device igniting with little oil or without oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310013433.6A CN103017190B (en) | 2013-01-15 | 2013-01-15 | Oxygenating device igniting with little oil or without oil |
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| Publication Number | Publication Date |
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| CN103017190A CN103017190A (en) | 2013-04-03 |
| CN103017190B true CN103017190B (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310013433.6A Active CN103017190B (en) | 2013-01-15 | 2013-01-15 | Oxygenating device igniting with little oil or without oil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105402767B (en) * | 2014-09-12 | 2018-07-24 | 神华集团有限责任公司 | Liquid fuel igniting device and liquid-fuel burner |
| CN104534511B (en) * | 2014-12-30 | 2016-08-24 | 烟台龙源电力技术股份有限公司 | A kind of air register igniter and air register |
| CN113857619B (en) * | 2021-11-08 | 2022-11-08 | 上海东震冶金工程技术有限公司 | Molten pool holder |
| CN114440257B (en) * | 2022-01-13 | 2023-03-21 | 徐兴国 | Plasma cooling air device for boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60253721A (en) * | 1985-03-20 | 1985-12-14 | Matsushita Electric Ind Co Ltd | Supplying device of oxygen enriched gas for combustion |
| CN1053380A (en) * | 1990-01-17 | 1991-07-31 | Esab焊机产品公司 | The electrode that is used for plasma (welding) torch |
| CN201237246Y (en) * | 2008-07-03 | 2009-05-13 | 徐州燃控科技股份有限公司 | Plasma electric arc long-range transportation apparatus |
| CN102269424A (en) * | 2011-04-26 | 2011-12-07 | 向卫 | Oxygen enrichment plasma oil-free ignition and stable combustion method and device |
| CN102305415A (en) * | 2011-10-18 | 2012-01-04 | 上海锅炉厂有限公司 | Plasma oil-free ignition system in oxygen-enriched environments |
| CN102519037A (en) * | 2011-12-26 | 2012-06-27 | 上海锅炉厂有限公司 | Plasma oil-free ignition combustor |
| CN203052700U (en) * | 2013-01-15 | 2013-07-10 | 烟台龙源电力技术股份有限公司 | Oxygen adding device of little-oil ignition or oil-free ignition |
-
2013
- 2013-01-15 CN CN201310013433.6A patent/CN103017190B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60253721A (en) * | 1985-03-20 | 1985-12-14 | Matsushita Electric Ind Co Ltd | Supplying device of oxygen enriched gas for combustion |
| CN1053380A (en) * | 1990-01-17 | 1991-07-31 | Esab焊机产品公司 | The electrode that is used for plasma (welding) torch |
| CN201237246Y (en) * | 2008-07-03 | 2009-05-13 | 徐州燃控科技股份有限公司 | Plasma electric arc long-range transportation apparatus |
| CN102269424A (en) * | 2011-04-26 | 2011-12-07 | 向卫 | Oxygen enrichment plasma oil-free ignition and stable combustion method and device |
| CN102305415A (en) * | 2011-10-18 | 2012-01-04 | 上海锅炉厂有限公司 | Plasma oil-free ignition system in oxygen-enriched environments |
| CN102519037A (en) * | 2011-12-26 | 2012-06-27 | 上海锅炉厂有限公司 | Plasma oil-free ignition combustor |
| CN203052700U (en) * | 2013-01-15 | 2013-07-10 | 烟台龙源电力技术股份有限公司 | Oxygen adding device of little-oil ignition or oil-free ignition |
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| Publication number | Publication date |
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| CN103017190A (en) | 2013-04-03 |
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