CN107013915A - A kind of oil-minimum start-up burner suitable for station boiler - Google Patents
A kind of oil-minimum start-up burner suitable for station boiler Download PDFInfo
- Publication number
- CN107013915A CN107013915A CN201710389874.4A CN201710389874A CN107013915A CN 107013915 A CN107013915 A CN 107013915A CN 201710389874 A CN201710389874 A CN 201710389874A CN 107013915 A CN107013915 A CN 107013915A
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- China
- Prior art keywords
- oil
- burner
- coal
- oil gun
- spout
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
- F23D17/007—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel liquid or pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2204/00—Burners adapted for simultaneous or alternative combustion having more than one fuel supply
- F23D2204/30—Burners adapted for simultaneous or alternative combustion having more than one fuel supply liquid and pulverulent fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The present invention relates to a kind of oil-minimum start-up burner suitable for station boiler, it is characterized in that, including burner body and igniter, burner body includes First air entrance, bend loss and spout section, pass through bend loss transition between First air entrance and spout section, dense-and-weak separator module and air-coal separating dividing plate are provided with spout section, surrounding air is distributed with the spout around spout section；Igniter includes being located at bluff body, the oil gun of spout section nozzle.It is an advantage of the invention that：The igniter of the present invention has more significant effect to meager coal and anthracitic igniting, and the igniting to above-mentioned coal can reach the effect of fuel-economizing；The band pulverized coal ignition device burner of the present invention can not only be used for start-up burner using oxygen-enriched combustion-supporting agent, but also as coal dust main burner, between the two easy switching.
Description
Technical field
The present invention relates to a kind of oil-minimum start-up burner suitable for station boiler, a kind of station boiler is related specifically to poor
Coal and anthracite coal dust oil-minimum start-up burner.
Background technology
The traditional big grease gun igniting mode fuel consumption of station boiler is huge, and igniting cost remains high.Especially for waving
Hair point content low meager coal and anthracite, the ignition oil amount of boiler-burner are bigger, and the process of igniting is difficult compared with bituminous coal.
Current most of power plant are transformed traditional igniter using plasma and micro- oil tech.Plasma ignition
Technology can put into operation electric precipitation in Initial Stage after Ignition, advantageous to environment and desulfurization ratio.But requirement of the plasma ignition to ature of coal
It is higher, to ensure smooth ignition at initial stage.Due to igniting special coal, (calorific value need to reach more than 3400kJ/kg, height volatilization in recent years
Point) supply more in short supply；The ature of coal of igniting coal is worse and worse；Ash content is larger；Under causing the stability of plasma ignition significantly
Drop, it is sometimes desirable to repeatedly igniting or the temperature of burner hearth brought up to more than 400 DEG C using big oil gun, meeting when such a method is serious
Occurs the major accident of furnace puff.There is huge potential safety hazard while fuel-economizing in this operating method.In addition, plasma
Igniting also haves the shortcomings that cathode taps short life, and the blow-out problem of generation also seriously threatens the operation safety of boiler.
Tiny-oil ignition is on the basis of plasma ignition, to be lighted using classification and the principle amplified step by step, with micro
Oily (about 20~80kg/h) is atomization and burn in precombustion chamber, and the energy discharged with oil mist combustion replaces plasma-arc to be produced
Raw energy, reaches and realizes lighting and the stable purpose burnt for coal dust using micro- oil.But due to coal in Tiny-oil ignition device
Powder flow rate is big, short by the preheating time of pulverized coal combustor, causes pulverized coal preheating not enough, and temperature does not reach ignition temperature, and
The micro- oil gun of the general only one of which of the device, the heating preheating and ignition of coal dust must be completed once, so the device point
The good coal of the high ature of coal of volatile matter is fired, can not be lighted for the relatively low meager coal of caloric value and volatile matter and anthracite.
The method that many unit ignitions must accompany burning using big oil gun at present, unit operation cost is significantly improved, because
It is to reduce the task of top priority of cost of electricity-generating that this, which explores significantly more efficient sparking mode,.
The content of the invention
It is an object of the invention to provide it is a kind of it is simple in construction, applied widely, have special-effect to the poor coal of ature of coal
Pulverized-coal fired boiler few-oil ignition device, when using meager coal and anthracite as fuel to solve existing more station boiler, due to
Meager coal and anthracite volatile matter are low, ash content is high and caloric value is low, cause plasma ignition and tiny-oil ignition and do not apply to, so that
Easily occurs the problems such as repeatedly igniting and blow-out in actual use.
In order to achieve the above object, the technical scheme is that there is provided a kind of few-oil ignition suitable for station boiler
Burner, it is characterised in that including burner body and igniter, burner body includes First air entrance, bend loss
With spout section, by bend loss transition between First air entrance and spout section, in spout section provided with dense-and-weak separator module and
Surrounding air is distributed with air-coal separating dividing plate, the spout around spout section；
Igniter includes being located at bluff body, the oil gun of spout section nozzle, and bluff body is respectively arranged on the left side and the right side air-coal separating
Dividing plate, the two ends of air-coal separating dividing plate in the width direction respectively with bluff body and spout section be connected so that by spout section it is wear-resisting outside
Space between shell and bluff body is separated into concentrated phase primary wind and powder passage and light phase primary wind and powder passage, and primary wind and powder is through air-coal separating
The dense phase pulverized coal and light phase coal dust of device module formation respectively enter concentrated phase primary wind and powder passage and light phase primary wind and powder passage, oil gun
One end stretch into after burner body the centre for extending to bluff body, the other end of oil gun is oily material inlet, and oily material enters
Mouth is located at outside burner body and is connected with compressed air inlet.
Preferably, the air-coal separating dividing plate and the bluff body are isometric.
Preferably, oil gun sheath pipe is cased with outside the oil gun, by connecting sealing between oil gun sleeve pipe and the oil gun
Part is sealed.
Preferably, the oil gun sleeve pipe and the oil gun are connected by internal thread, and the side towards the fire of the bluff body is provided with recessed
Groove
Preferably, the support of the burner and the igniter is fixed connects seal assembly and described blunt by described
Body and the air-coal separating demarcation strip.
Preferably, wear-resistant components are respectively equipped with the both sides up and down of the air-coal separating dividing plate.
Preferably, the central axis of the oil gun, the spout of spout section and the bluff body is overlapped.
Preferably, the oily material enters oil gun by oily material inlet, is atomized by compressed air and uniformly mixes, passes through
The spout of oil gun, into hearth combustion and firing coal-dust；
The compressed air for being passed through the compressed air inlet is the mixture of normal compressed air and pure oxygen, is oxygen-enriched help
Fire agent.
Preferably, the angle of the inclined-plane of the bluff body and the oil gun center line is 15-75 °.
The igniter of specific structure is arranged in an existing wind snout by the present invention, needed for reaching reduction coal dust firing
The fire ignition energy and duration of ignition purpose wanted.The torch that catches fire of oil gun burning generation directly directly connects with the coal dust in First air
Touch.When the high-temperature flue gas (＞=2000 DEG C or so) that oxygen-enriched combustion-supporting agent and mist of oil vigorous combustion are produced is far above Ordinary Compression air
Flue-gas temperature (about 1500~1800 DEG C), the high-temperature flue gas will directly promote pulverized coal particle temperature drastically to raise, rupture crushing,
It is pyrolyzed and discharges the rapid ignition of substantial amounts of volatile matter, other unburned coal powders, torch is then heated by the coal dust caught fire
Become larger during air motion, greatly reduce the fire ignition energy required for coal dust firing and the duration of ignition.Low negative
Combustion adjuvant can be converted to Ordinary Compression air by oxygen rich gas according to the actual conditions of operation when running and be used for stable fire by lotus
Burn.The state switching of combustion adjuvant can meet the requirement of boiler start/ stop and low-load combustion-stabilizing.
Beneficial effects of the present invention：The igniter of the present invention has more significant effect to meager coal and anthracitic igniting,
Igniting to above-mentioned coal can reach the effect of fuel-economizing；The band pulverized coal ignition device burner of the present invention had used oxygen-enriched combustion-supporting agent both
Can be as start-up burner, but also as coal dust main burner, easy switching between the two.
Brief description of the drawings
A kind of general structure schematic diagram for oil-minimum start-up burner suitable for station boiler that Fig. 1 provides for the present invention；
Fig. 2 a are a kind of cross-sectional view of structure type of the present invention；
Fig. 2 b are the cross-sectional view of another structure type of the present invention；
Fig. 3 is the structural representation of bluff body part of the present invention.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
As shown in figure 1, a kind of oil-minimum start-up burner suitable for station boiler that the present invention is provided includes burner sheet
Body 14 and igniter 16.
14 points of burner body is three sections, respectively First air entrance 3, bend loss 2 and spout section 1, First air entrance
Pass through the transition of bend loss 2 between section 3 and spout section 1.Dense-and-weak separator module 5 and deep or light point are provided with spout section 1, spout section 1
From dividing plate 13, surrounding air 4 is distributed with the spout around spout section 1.It is respectively equipped with the both sides up and down of air-coal separating dividing plate 13 resistance to
Grind component 12.
Igniter 16 includes being located at bluff body 6, the oil gun 7 of spout 1 nozzle of section.Bluff body 6 is respectively arranged on the left side and the right side dense
Light separation dividing plate 13.The two ends of air-coal separating dividing plate 13 in the width direction are connected with bluff body 6 and spout section 1 respectively, so that will spray
Space between the wear-resisting shell 11 and bluff body 6 of mouth section 1 is separated into concentrated phase primary wind and powder passage and light phase primary wind and powder passage, dense
Light separation dividing plate 13 and bluff body 6 are isometric.Dense phase pulverized coal and light phase coal dust difference that primary wind and powder is formed through dense-and-weak separator module 5
Into concentrated phase primary wind and powder passage and light phase primary wind and powder passage, one end of oil gun 7 stretch into extended to after burner body 14 it is blunt
The centre of body 6, the central axis of oil gun 7, the spout of spout section 1 and the bluff body 6 is overlapped.The side towards the fire of bluff body 6 is provided with
Groove, and the inclined-plane of bluff body 6 and the angle of the center line of oil gun 7 are 15-75 °.The other end of oil gun 7 is oily material inlet 9, oily thing
Material import 9 is located at outside burner body 14 and is connected with compressed air inlet 15.Oily material enters oil by oily material inlet 9
Rifle 7, is atomized by compressed air and uniformly mixes, and by the spout of oil gun 7, into hearth combustion and firing coal-dust, is passed through compression
The compressed air of air intlet 15 is the mixture of normal compressed air and pure oxygen, is oxygen-enriched combustion-supporting agent.
Oil gun sheath pipe 8 is cased with outside oil gun 7, it is close by connecting seal member 10 between oil gun sleeve pipe 8 and the oil gun 7
Envelope, and connected by internal thread.The support of burner 14 and igniter 16 fix by connect seal assembly 10 and bluff body 6 with
Air-coal separating demarcation strip 13.
The present invention application method be：
When step 1, boiler possess ignition condition, oxygen-enriched compressed air is atomized together by gas passage and oily material,
Ignited device ignites, and forms thermal-flame, improves the environment temperature of burner hearth, while First air air door low-angle is opened for cooling down
Oil gun bluff body 6.
Step 2, when the temperature of primary wind and powder is more than 70 DEG C, a small amount of coal dust is suitably put into according to the grade of boiler, and
By fuel-flow control boiler startup initial combustion rate, and as the progress of burning steps up the temperature and pressure of boiler.
Step 3, burner adjust oxygen-enriched compressed air, oil mass and primary wind and powder according to the temperature parameter of boiler furnace flue gas
Relation.
Step 4, when boiler operatiopn load is more than 50%, successively close oil gun from upper strata to lower floor, and by oxygen-enriched compression
Air is progressively adjusted to the compressed air normally used according to operational factor, and exits oil gun.
The invention is not limited in above-described embodiment, on the basis of technical scheme disclosed by the invention, the skill of this area
Art personnel are according to the technology contents announced, it is not necessary to which performing creative labour can just make to some of which technical characteristic and replace
Generation and deformation, these deformations are within the scope of the present invention.
Claims (9)
1. a kind of oil-minimum start-up burner suitable for station boiler, it is characterised in that including burner body (14) and igniting
Device (16), burner body (14) includes First air entrance (3), bend loss (2) and spout section (1), First air entrance
(3) by bend loss (2) transition between spout section (1), spout section (1) is interior to be provided with dense-and-weak separator module (5) and deep or light point
From dividing plate (13), surrounding air (4) is distributed with the spout around spout section (1)；
Igniter (16) includes being located at the bluff body (6), oil gun (7) of spout section (1) nozzle, bluff body (6) left and right sides difference
Provided with air-coal separating dividing plate (13), the two ends of air-coal separating dividing plate (13) in the width direction respectively with bluff body (6) and spout section (1)
Be connected, thus by spout section (1) wear-resisting shell (11) and bluff body (6) between space be separated into concentrated phase primary wind and powder passage with
Light phase primary wind and powder passage, the dense phase pulverized coal and light phase coal dust that primary wind and powder is formed through dense-and-weak separator module (5) is respectively enterd
Concentrated phase primary wind and powder passage and light phase primary wind and powder passage, one end of oil gun (7) stretch into extended to after burner body (14) it is blunt
The centre of body (6), the other end of oil gun (7) is oily material inlet (9), and oily material inlet (9) is located at burner body
(14) it is connected outside and with compressed air inlet (15).
2. a kind of oil-minimum start-up burner suitable for station boiler as claimed in claim 1, it is characterised in that described deep or light
Separate dividing plate (13) and the bluff body (6) is isometric.
3. a kind of oil-minimum start-up burner suitable for station boiler as claimed in claim 1, it is characterised in that in the oil
Oil gun sheath pipe (8) is cased with outside rifle (7), is sealed between oil gun sleeve pipe (8) and the oil gun (7) by being connected seal member (10).
4. a kind of as claimed in claim 3 oil-minimum start-up burner suitable for station boiler, it is characterised in that the oil gun
Sleeve pipe (8) and the oil gun (7) are connected by internal thread, and the side towards the fire of the bluff body (6) is provided with groove.
5. a kind of oil-minimum start-up burner suitable for station boiler as claimed in claim 3, it is characterised in that the burning
The support of device (14) and the igniter (16) fix by the connection seal assembly (10) and the bluff body (6) with it is described
Air-coal separating demarcation strip (13).
6. a kind of oil-minimum start-up burner suitable for station boiler as claimed in claim 1, it is characterised in that described dense
The both sides up and down of light separation dividing plate (13) are respectively equipped with wear-resistant components (12).
7. a kind of oil-minimum start-up burner suitable for station boiler as claimed in claim 1, it is characterised in that the oil gun
(7), the spout of the spout section (1) and the central axis of the bluff body (6) are overlapped.
8. a kind of oil-minimum start-up burner suitable for station boiler as claimed in claim 1, it is characterised in that the oily thing
Material enters oil gun (7) by oily material inlet (9), is atomized by compressed air and uniformly mixes, by the spout of oil gun (7), enters
Enter hearth combustion and firing coal-dust；
The compressed air for being passed through the compressed air inlet (15) is the mixture of normal compressed air and pure oxygen, is oxygen-enriched help
Fire agent.
9. a kind of as claimed in claim 1 oil-minimum start-up burner suitable for station boiler, it is characterised in that the bluff body
(6) inclined-plane and the angle of the oil gun (7) center line is 15-75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389874.4A CN107013915B (en) | 2017-05-27 | 2017-05-27 | Little oil ignition combustor suitable for power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389874.4A CN107013915B (en) | 2017-05-27 | 2017-05-27 | Little oil ignition combustor suitable for power station boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013915A true CN107013915A (en) | 2017-08-04 |
| CN107013915B CN107013915B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389874.4A Active CN107013915B (en) | 2017-05-27 | 2017-05-27 | Little oil ignition combustor suitable for power station boiler |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575859A (en) * | 2017-09-27 | 2018-01-12 | 西安热工研究院有限公司 | The oxygenation start-up burner and its ignition smooth combustion method of a kind of coal burning boiler of power station |
| CN111023083A (en) * | 2019-12-19 | 2020-04-17 | 哈尔滨工业大学 | W flame boiler adopting cyclone burner |
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| JP2001082705A (en) * | 1999-09-08 | 2001-03-30 | Mitsubishi Heavy Ind Ltd | Pulverized fuel combustion burner, boiler, and pulverized fuel combustion method |
| JP2003279006A (en) * | 2002-03-25 | 2003-10-02 | Mitsubishi Heavy Ind Ltd | Fine powder solid fuel combustion apparatus |
| CN2926843Y (en) * | 2006-04-10 | 2007-07-25 | 徐州燃烧控制研究院有限公司 | Oil-enhanced combustion trigger of coal powder boiler |
| CN101109507A (en) * | 2006-07-21 | 2008-01-23 | 清华大学 | Little oil ignition horizontal dense-dilute concentration type direct flow pulverized coal burner |
| CN101140064A (en) * | 2007-09-25 | 2008-03-12 | 深圳东方锅炉控制有限公司 | Direct current coal powder burner |
| CN201093529Y (en) * | 2007-08-10 | 2008-07-30 | 洛阳博耐特工程技术有限公司 | Two-stage blunt body minim oil lighter |
| CN101825278A (en) * | 2010-05-28 | 2010-09-08 | 华中科技大学 | Oxygen-rich combustor |
| CN207298958U (en) * | 2017-05-27 | 2018-05-01 | 上海锅炉厂有限公司 | Suitable for the oil-minimum start-up burner of station boiler |
-
2017
- 2017-05-27 CN CN201710389874.4A patent/CN107013915B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082705A (en) * | 1999-09-08 | 2001-03-30 | Mitsubishi Heavy Ind Ltd | Pulverized fuel combustion burner, boiler, and pulverized fuel combustion method |
| JP2003279006A (en) * | 2002-03-25 | 2003-10-02 | Mitsubishi Heavy Ind Ltd | Fine powder solid fuel combustion apparatus |
| CN2926843Y (en) * | 2006-04-10 | 2007-07-25 | 徐州燃烧控制研究院有限公司 | Oil-enhanced combustion trigger of coal powder boiler |
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| CN201093529Y (en) * | 2007-08-10 | 2008-07-30 | 洛阳博耐特工程技术有限公司 | Two-stage blunt body minim oil lighter |
| CN101140064A (en) * | 2007-09-25 | 2008-03-12 | 深圳东方锅炉控制有限公司 | Direct current coal powder burner |
| CN101825278A (en) * | 2010-05-28 | 2010-09-08 | 华中科技大学 | Oxygen-rich combustor |
| CN207298958U (en) * | 2017-05-27 | 2018-05-01 | 上海锅炉厂有限公司 | Suitable for the oil-minimum start-up burner of station boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575859A (en) * | 2017-09-27 | 2018-01-12 | 西安热工研究院有限公司 | The oxygenation start-up burner and its ignition smooth combustion method of a kind of coal burning boiler of power station |
| CN111023083A (en) * | 2019-12-19 | 2020-04-17 | 哈尔滨工业大学 | W flame boiler adopting cyclone burner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013915B (en) | 2023-06-16 |
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