CN107339698A - A kind of burner - Google Patents
A kind of burner Download PDFInfo
- Publication number
- CN107339698A CN107339698A CN201710697129.6A CN201710697129A CN107339698A CN 107339698 A CN107339698 A CN 107339698A CN 201710697129 A CN201710697129 A CN 201710697129A CN 107339698 A CN107339698 A CN 107339698A
- Authority
- CN
- China
- Prior art keywords
- leading portion
- gasifying agent
- passage
- layer water
- sleeve pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 97
- 239000002817 coal dust Substances 0.000 claims abstract description 60
- 239000000919 ceramic Substances 0.000 claims abstract description 44
- 239000000843 powder Substances 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims description 70
- 238000007789 sealing Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 239000011214 refractory ceramic Substances 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 238000002309 gasification Methods 0.000 abstract description 17
- 239000007789 gas Substances 0.000 description 49
- 238000002485 combustion reaction Methods 0.000 description 23
- 239000003245 coal Substances 0.000 description 20
- 239000000567 combustion gas Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 14
- 239000000498 cooling water Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 9
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 7
- 239000000443 aerosol Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000803 paradoxical effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F23D17/005—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
-
- 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
- F23D2204/20—Burners adapted for simultaneous or alternative combustion having more than one fuel supply gaseous and pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2209/00—Safety arrangements
- F23D2209/20—Flame lift-off / stability
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2211/00—Thermal dilatation prevention or compensation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/10—Burner material specifications ceramic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The invention discloses a kind of burner, belongs to coal dust gasification field.It includes back segment steel component and leading portion bulk ceramics prefabricated component, back segment steel component includes gas sleeve, casing air, coal dust sleeve pipe, gasifying agent sleeve pipe and ignition power pole bar, leading portion bulk ceramics prefabricated component is a structure for including the conical surface, it includes the leading portion burning gallery with ring, leading portion gasifying agent passage and leading portion throw powder passage, leading portion burning gallery includes the steady flame section of hourglass-shaped inner chamber, steady flame section connects with air duct, leading portion is thrown powder passage and connected with back segment throwing powder passage, leading portion gasifying agent passage connects with back segment gasifying agent passage, the centerline axis parallel of the outlet of leading portion gasifying agent passage and the outlet of steady flame section with leading portion bulk ceramics prefabricated component, the export direction that leading portion throws powder passage expands inclination towards the export direction side of leading portion gasifying agent passage.The present invention solves the problems, such as that burner ignition is difficult, easy cutoff, has the characteristics of ignition success rate is high, flame holding is good, heat resistant and wear resistant damage.
Description
Technical field
The invention belongs to coal dust gasification field, more specifically to a kind of burner.
Background technology
Existing gas generator start-up burner generally use oil burner or gas burner, its structure are in coal gas
Generation furnace wall set-point ignition combustor, igniter and combustion air passage, the ignited device of start-up burner is lighted, combustion-supporting
Under the drive of air into gas generator jet flames, so as to give gas generator heat temperature raising, treat temperature in gas generator
When degree reaches requirement, then (it both can be independent to throw coal burner, can also be integrated with start-up burner by throwing coal burner
Compound burner) spray coal dust and gasifying agent, gas generator into gas generator and start to react.Gas generator is just
After paradoxical reaction operates steadily, start-up burner starts to stop oil spout or combustion gas.Although start-up burner and igniter can adopt
With heat resisting steel, and coordinate water cooling plant, but generally also can only below 450 DEG C normal work, so in gas generator just
Often need to extract start-up burner out gas generator during work, or increase other passages to be passed through other media to ignition
Device cooling is protected, and prevents that start-up burner is ablated.
Based on existing material and the cooling means used, such start-up burner is directly inserted into gas generator,
Still facing has ignition difficulties, cutoff probability height, heat resistant and wear resistant damage poor performance, firing up and throwing powder complex operation, operation dimension
Protect the problems such as difficulty is big, and danger is high, and burner life is short, and use cost is high.
Firstly, since after normal reaction in gas generator temperature in the range of 1200~1600 DEG C, and coal gas occur
Gasifying agent swirl strength is very high in stove, thus the radiations heat energy that start-up burner end is subject to is big, temperature is high, to avoid high temperature
Radiation, it is necessary to as far as possible start-up burner arrangement more rearward, but arrange excessively start-up burner can be caused to spray rearward
Fuel combustion it is insufficient；In addition, generally, in order that gas generator has preferable gasification reaction flow field, igniting
The length that burner is stretched into gas generator then must be enough length, in this case burner must bear higher temperature
Degree, thus cause the life-span of burner and igniter shorter.
Secondly as start-up burner is extend into gas generator, gas generator flow field swirl strength during work
Larger, coal dust and gasifying agent are under Swirling Flow effect, it is easy to burner cutoff is caused, thus, combustion of being lighted a fire in actual motion
Burner usually needs repeatedly to light a fire again, in addition, the Swirling Flow of high intensity also can be to the end of burner in gas generator
Larger abrasion is formed, if throwing the combination burner that coal burner integrates with start-up burner, burner internal
It is also more serious to throw the erosive wear that coal channel is subject to.
Chinese invention patent, publication number：CN104974797B, publication date：On July 11st, 2017, disclose for two sections
The multifunctional gasification burner of formula dry coal powder airflow bed gasification furnace.The invention is characterised by that the head of a flame detecting pipe is placed in
Center in the main burner, the outer layer of flame detecting pipe are provided with blast tube, and the head of the blast tube is provided with combustion gas
Nozzle；The outer layer of the blast tube is provided with combustion air passage, and the head of the combustion air passage is provided with cyclone structure；The flame
Detect tube head to the space formed between main burner head be precombustion chamber；Burning torch, flame are provided with described combustion wind passage
The afterbody of detection pipes is provided with flame detecting device.The invention helps according to pre-vaporized room and the structure design of main vapourizing furnace two-period form
Wind is fired after cyclone structure, it is then past with eddy flow shape in rotational flow field primary combustion caused by precombustion chamber with combustion gas mixing
Jet flames in burner hearth outside main burner, flame are burnt after being mixed with the coal dust that coal nozzle sprays in burner hearth, but
Its weak point is：(1) space of precombustion chamber is larger, and when starting to be passed through combustion air and combustion gas, combustion air and combustion gas are easily spread,
Especially spread into burner hearth, thus the aggregated mixed effect of combustion air and combustion gas near burning torch is unsatisfactory, this is one
Determine to cause ignition difficulties in degree；(2) the flame rigidity preliminarily formed is weaker, the coal dust being passed through rotational flow field effect under,
Strong interference is easily caused to flame, it is easy to cause cutoff；(3) a part of coal dust acts on after entering precombustion chamber in rotational flow field
Under larger abrasion can be also formed to the end of burner.
Chinese utility model patent, publication number：CN206033686U, publication date：On August 22nd, 2016, discloses one kind
Coal gasification assembled nozzle.It includes：Central tube, the inlet side of central tube are provided with igniting fuel gas inlet, the outside of central tube
Igniting casing air, the first cooling water pipe, oxidant sleeve pipe, the second cooling water pipe, coal dust sleeve pipe, the 3rd are arranged with successively
Cooling water pipe, the outlet for casing air of lighting a fire stretch out relative to the outlet of central tube, to limit the first pre-mix zone, are used for
Mixed firing combustion gas and igniting air；The outlet of coal dust sleeve pipe stretches out relative to the outlet of oxidant sleeve pipe, to limit
Second pre-mix zone, for hybrid oxidant and coal dust；Oxidant sleeve pipe tapers into close to one end aperture of outlet, and oxidant
The inwall in the exit of sleeve pipe is circumferentially arranged spinning disk, and the utility model realizes oxidant and the uniform gas-solid of coal dust mixes
Close, so that coal dust firing is stable in pulverized coal gasification furnace, efficiency of carbon con version is high.The utility model also exists in Publication No.：
The problem of CN104974797B patent of invention is identical, i.e. its weak point are：(1) igniting combustion gas and igniting air are easily outside
Diffusion, thus light a fire combustion gas and light a fire air collected around in igniter mixing effect it is unsatisfactory, therefore, there is also point
The problem of fire is difficult；(2) first pre-mix zones are easily by external interference, and coal dust is under rotational flow field effect, the fire easily to preliminarily forming
Flame causes strong interference, it is easy to causes cutoff.In addition, in application process Flame to have to pass through first pre- for the utility model
Confounding could heat coal dust gasification, thus the first pre-mix zone is while protecting flame interference-free, and also extending flame must wear
The length crossed, therefore the rigidity of flame also reduces, and then reduce coal dust gasification reaction effect in stove.
Chinese utility model patent, publication number：CN206109325U, publication date：On April 19th, 2017, disclose fine coal
Gasify assembled nozzle.Including：Central tube, central tube are provided with igniting fuel gas inlet in the side wall of entrance；Outside central tube
Portion is arranged with igniting casing air, gasifying agent sleeve pipe, coal dust sleeve pipe and cooling water pipe successively；The outlet of gasifying agent sleeve pipe, coal
The outlet of powder sleeve pipe, the outlet of cooling water pipe stretch out successively relative to the outlet of central tube, to limit pre-mix zone, use
In the preliminary mixing of gasifying agent and fine coal；Wherein, pre-mix zone is the cone space that sectional area gradually increases.The powder of the utility model
Coal gasification assembled nozzle, the uniform gas-solid mixing of gasifying agent and coal dust is realized, so that the coal dust firing in gasification furnace is stable,
Carbon conversion ratio is high.Its weak point is：(1) the problem of equally existing above-mentioned ignition difficulties；(2) pre-mix zone rotational flow intensity inside is big,
After the gasifying agent and coal dust that are passed through, it is easy to cause burner cutoff, thus point again is needed repeatedly during coal dust gasification
Fire.
Chinese utility model patent, publication number：CN204607936U, publication date：On September 2nd, 2015, discloses a kind of length
Life-span burner of coal gasification process.It is combined by face before pulverized coal gun, combustion-supporting gas spray gun, steam spraying gun and burner, described
Combustion-supporting gas spray gun is enclosed on outside pulverized coal gun, is connected with the Ifold flange of pulverized coal gun, and the steam spraying gun is enclosed on combustion-supporting gas
Outside spray gun, it is connected with the Ifold flange of combustion-supporting gas spray gun, the gun barrel front end of steam spraying gun passes through fastener and steam burner sleeve
Connection, steam burner sleeve front end set heat radiation screening plate, form face before burner.Face is equal before coal dust channel, burner sleeve and burner
It is made of ceramic material, whole burner lightweight refracrory module separates with furnace high-temperature radiation, eliminates traditional burner
Cooling system, efficiently solve high temperature corrosion, fatigue cracking and the erosive wear problem of process burner, meet commercial Application
More than 1 year at full capacity, the requirement of long-term operation.The utility model is applied to the part such as coal gasification or coal water slurry gasification and fired
Burn gasification process.Its weak point is：(1) combustion-supporting gas burner sleeve and half Laval Wind guiding device form combustion-supporting gas rotation
Wind exports, and after the plasma ignition device installed in Gas Pipe lights combustion gas, half Laval Wind guiding device is to preliminary shape
Into flame interfere, hinder igniting to a certain extent；(2) sprayed by the combustion gas of Gas Pipe and combustion-supporting gas spray gun
Combustion-supporting gas mixing ignition formed flame temperature it is higher, due to the cooling effect of no cooling system, thus gas pipeline
Deng all the time be in high temperature under, easily cause thermal fatigue cracking；(3) by the coal dust jet of ceramic coal dust jet pipe to annular gas passage
The flame that outlet sprays forms interference, easily causes ignition difficulties, cutoff.
The content of the invention
1st, to solve the problems, such as
The problem of ignition difficulties, easy cutoff being present for existing start-up burner, the present invention provides a kind of burner,
It has the characteristics of ignition success rate is high, flame holding is good, anti-wear performance and resistance to elevated temperatures are excellent.
2nd, technical scheme
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of burner, including back segment steel component and leading portion bulk ceramics prefabricated component, described leading portion bulk ceramics are pre-
Product is fixedly installed on the front end of described back segment steel component；
Described back segment steel component includes：
Gas sleeve, the gas sleeve is interior to have blast tube；
Casing air, the casing air are sheathed on the outside of the gas sleeve, the inwall of the casing air and institute
State and limit air duct between the outer wall of gas sleeve；
Coal dust sleeve pipe, the coal dust sleeve pipe are sheathed on the outside of the casing air, the inwall of the coal dust sleeve pipe and institute
State and back segment is limited between the outer wall of casing air throw powder passage；
Gasifying agent sleeve pipe, the gasifying agent sleeve pipe are sheathed on the outside of the coal dust sleeve pipe, the gasifying agent sleeve pipe it is interior
Back segment gasifying agent passage is limited between the outer wall of wall and the coal dust sleeve pipe；
Ignition power pole bar, the igniting are additionally provided between the outer wall of the inwall of the casing air and the gas sleeve
The front end of electrode stem flushes with the port of export of the gas sleeve；
Described leading portion bulk ceramics prefabricated component is a structure for including the conical surface, and it also includes with ring triple channel, described
Intersect with the described conical surface outlet with ring triple channel；
Described same ring triple channel is respectively to be located at leading portion burning gallery, the outside at leading portion bulk ceramics prefabricated component center
Leading portion gasifying agent passage, and the leading portion throwing powder passage between leading portion burning gallery and leading portion gasifying agent passage, before described
Section burning gallery includes sealing construction section and steady flame section, and the external diameter of the internal diameter and the casing air of the sealing construction section matches
Conjunction is fixedly connected, and the inner chamber of described steady flame section is hourglass-shaped, and connect with the air duct, the leading portion throw powder passage and
The back segment throws the connection of powder passage, and the leading portion gasifying agent passage connects with the back segment gasifying agent passage；
The exporting of the leading portion gasifying agent passage, the steady flame section outlet with the leading portion bulk ceramics prefabricated component
Centerline axis parallel；
The export direction that the leading portion throws powder passage expands inclination towards the export direction side of the leading portion gasifying agent passage.
Further, the internal diameter of the outlet ends of the steady flame section is equal with the internal diameter of the casing air.
Further, the leading portion gasifying agent passage is that the structure expanded afterwards is first shunk from entrance to outlet.
Further, described back segment steel component also includes internal layer water-cooling jacket and outer layer water-cooling jacket, the internal layer
Water-cooling jacket is sheathed on the outer wall of the coal dust sleeve pipe, and the outer layer water-cooling jacket is sheathed on the outer wall of the gasifying agent sleeve pipe.
Further, one end in described casing air close to described steady flame section is provided with oblique tooth-shaped wind distributing hole plate；
The oblique tooth-shaped wind distributing hole plate is cylindrical type, and its external diameter is engaged with the internal diameter of the casing air；The oblique tooth-shaped wind distributing hole
Centre bore, some straight-through air holes, side opening and some oblique air vents, the centre bore are disposed with by its center to periphery on plate
Internal diameter be engaged with the external diameter of the gas sleeve, the internal diameter of the side opening is engaged with the external diameter of the ignition power pole bar,
Some described oblique air vents tilt in the same direction relative to the axis of described oblique tooth-shaped wind distributing hole plate.
Further, it is circumferentially arranged to have gasifying agent eddy flow part, the gasifying agent rotation in described back segment gasifying agent passage
Stream part includes central shaft and is centered around the swirl vane composition of the central shaft surrounding, and the swirl vane is relative in described
Mandrel tilts in the same direction.
Further, the internal layer water-cooling jacket includes the first internal layer water-cooling channel and the second internal layer water-cooling channel, described
First internal layer water-cooling channel connects with the second internal layer water-cooling channel in one end close to the leading portion bulk ceramics prefabricated component；
The outer layer water-cooling jacket includes the first outer layer water-cooling channel and the second outer layer water-cooling channel, the first outer layer water-cooling channel and
The second outer layer water-cooling channel connects close to one end of the leading portion bulk ceramics prefabricated component.
Further, the end face of the leading portion gasifying agent channel outer wall is fixedly connected with the end face of the gasifying agent sleeve pipe,
The end face of the outer wall of the leading portion throwing powder passage and the close leading portion bulk ceramics prefabricated component of the internal layer water-cooling jacket
One end end face is corresponding to be connected.
Further, the junction between the leading portion bulk ceramics prefabricated component and the back segment steel component is provided with fire resisting
Flexible filler.
Further, the leading portion is thrown and set between the end face of outer wall and the end face of the internal layer water-cooling jacket of powder passage
Have a refractory ceramic fibre felt, between the sealing construction section and the outer wall of the casing air, the outer layer water-cooling jacket it is interior
Between the outer wall of wall and the leading portion gasifying agent passage, it is provided with refractory ceramic fibre and turns round rope..
3rd, beneficial effect
Compared to prior art, beneficial effects of the present invention are：
(1) burner provided by the invention, strengthen by the way of leading portion bulk ceramics prefabricated component wraps casing air
Sealing property, the inner chamber connected with air duct are hourglass-shaped steady flame section, on the one hand promote combustion gas and air and are lighting a fire
The front end of electrode stem collects around mixing, thus igniting is easier to, and on the other hand, also ensures that and throws during coal coal dust and gasifying agent not
The flame preliminarily formed can be interfered, avoid cutoff；
(2) burner provided by the invention, leading portion bulk ceramics prefabricated component have excellent wear-resistant and resistance to elevated temperatures,
Effectively solve and easily washed away in the flow field of the high swirl strength of high temperature of the existing combustor nozzle in gas generator
The problem of abrasion and fatigue at high temperature cracking；In addition, inner chamber, which is hourglass-shaped steady flame section, forms parcel protection to ignitor bar, have
Help reduce the influence of hyperthermia radiation and erosive wear；
(3) burner provided by the invention, leading portion, which throws powder passage, to be had to the export direction side of leading portion gasifying agent passage
Inclined flaring structure design is expanded, the taper flow field to external diffusion is formed by the coal dust of leading portion throwing powder passage, and with passing through
The gasifying agent of leading portion gasifying agent passage forms intersection and confluxed, and this improves the mixed aerosol of coal dust and gasifying agent to a certain extent
Effect；
(4) burner provided by the invention, the internal diameters of the outlet ends of the hourglass-shaped inner chamber of steady flame section and casing air
It the equal structure of internal diameter, ensure that the flame ejected has higher rigidity, thus be not easy to be blown out by coal dust and gasifying agent etc.；
(5) burner provided by the invention, leading portion gasifying agent passage first shrink the structure expanded afterwards from entrance to outlet, increased
Add gasifying agent jet velocity, contribute to the mixed aerosol of gasifying agent and coal dust；
(6) water-cooling jacket that burner provided by the invention, the outer wall of coal dust sleeve pipe and the outer wall of gasifying agent sleeve pipe are set,
Cooling effect is enhanced, avoids sleeve pipe from fatigue at high temperature cracking occur；
(7) burner provided by the invention, oblique tooth-shaped wind distributing hole plate ensure that combustion air is evenly distributed, and form eddy flow
Flow field, enhancing combustion air and combustion gas mixing effect, and then improve burner ignition success rate and flame rigidity；
(8) burner provided by the invention, gasifying agent eddy flow part to form cylindricality eddy flow stream in leading portion gasifying agent passage
, the mixed aerosol effect of raising gasifying agent and coal dust；
(9) on the one hand burner provided by the invention, fire resisting flexible filler seal off each passage as seal,
Avoid each interchannel medium from mutually altering and cause the hidden danger such as combustion inner pipe, it is on the other hand overall as flexible compensation element, compensation leading portion
Ceramic preform and differential expansion caused by back segment steel inter-module.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of the present invention；
Fig. 2 is the structural representation of oblique tooth-shaped wind distributing hole plate；
Fig. 3 is the structural representation of gasifying agent eddy flow part.
In figure：1st, gas sleeve；2nd, ignition power pole bar；3rd, casing air；4th, internal layer water-cooling jacket；5th, gasifying agent eddy flow
Part；6th, outer layer water-cooling jacket；7th, refractory ceramic fibre felt；8th, refractory ceramic fibre turns round rope；9th, leading portion ceramic preform；10th, tiltedly
Tooth form wind distributing hole plate；11st, leading portion burning gallery；12nd, leading portion throws powder passage；13rd, leading portion gasifying agent passage；14th, coal dust sleeve pipe；
15th, gasifying agent sleeve pipe；16th, construction section is sealed；17th, steady flame section.
Embodiment
The present invention is further described below with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 1, a kind of burner, including back segment steel component and leading portion bulk ceramics prefabricated component 9, before described
Section bulk ceramics prefabricated component 9 is fixedly installed on the front end of described back segment steel component；
Described back segment steel component includes：
Gas sleeve 1, the gas sleeve 1 is interior to have blast tube；
Casing air 3, the casing air 3 are sheathed on the outside of the gas sleeve 1, the inwall of the casing air 3
Air duct is limited between the outer wall of the gas sleeve 1；
Coal dust sleeve pipe 14, the coal dust sleeve pipe 14 are sheathed on the outside of the casing air 3, the coal dust sleeve pipe 14 it is interior
Back segment is limited between the outer wall of wall and the casing air 3 and throws powder passage；
Gasifying agent sleeve pipe 15, the gasifying agent sleeve pipe 15 are sheathed on the outside of the coal dust sleeve pipe 14, the gasifying agent set
Back segment gasifying agent passage is limited between the outer wall of the inwall of pipe 15 and the coal dust sleeve pipe 14；
Ignition power pole bar 2 is additionally provided between the inwall of the casing air 3 and the outer wall of the gas sleeve 1, it is described
The front end of ignition power pole bar 2 flushes with the port of export of the gas sleeve 1；
Described leading portion bulk ceramics prefabricated component 9 is a structure for including the conical surface, and it also includes with ring triple channel, described
Intersect with the described conical surface outlet with ring triple channel；
Described same ring triple channel is respectively the leading portion burning gallery 11, outer positioned at the center of leading portion bulk ceramics prefabricated component 9
The leading portion gasifying agent passage 13 of side, and leading portion between leading portion burning gallery 11 and leading portion gasifying agent passage 13 are thrown powder and led to
Road 12, the leading portion are thrown powder passage 12 and connected with back segment throwing powder passage, the leading portion gasifying agent passage 13 and the back segment
Gasifying agent passage connects；
The leading portion burning gallery 11 includes sealing construction section 16 and steady flame section 17, the internal diameter of the sealing construction section 16 with
The external diameter of the casing air 3, which is engaged, to be fixedly connected, and described steady flame section 17 is hourglass shape, and is connected with the air duct
It is logical；
The outlet of the leading portion gasifying agent passage 13 and the outlet of the steady flame section 17 are pre- with the leading portion bulk ceramics
The centerline axis parallel of product 9；
The export direction that the leading portion throws powder passage 12 is expanded towards the export direction side of the leading portion gasifying agent passage 13
Tilt.
Burner in the present embodiment is set using the two-part structure of leading portion bulk ceramics prefabricated component 9 and back segment steel component
Meter, leading portion bulk ceramics prefabricated component 9 have excellent wear-resistant and resistance to elevated temperatures, effectively solve existing burner and burn
The problem of erosive wear and fatigue at high temperature cracking easily occur in the flow field of the high swirl strength of high temperature of the mouth in gas generator, has
Effect extends the life-span of burner, reduces burner use cost.During burner operation, combustion air is first passed through, restarts igniting
2 points of electrode stem, which is fought, is passed through combustion gas, and the flame of primary combustion, hourglass-shaped inner-cavity structure are now formed in leading portion burning gallery 11
Steady flame section 17 have two effects in the process：When being passed through combustion gas and combustion air, because the steady inside of flame section 17 is empty
Between contraction, combustion gas and the combustion air aggregated mixed in the space being exported between steady flame section 17 of gas sleeve 1, and being not easy
Continue to external diffusion, thus easily light, ignition success rate is high；Second, the contraction of the steady inner space of flame section 17, to a certain degree
On reduce the influence for throwing the flame that coal dust and gasifying agent during coal are formed to ignition process and primary combustion, effectively keep away
Cutoff is exempted from.And the mode that construction section 16 wraps casing air 3 connection is sealed, sealing is enhanced, avoids coal dust etc.
Other cut-offs are penetrated into leading portion burning gallery 11, cause potential safety hazard.
In addition, leading portion throwing powder passage 12, which has to the export direction side of leading portion gasifying agent passage 13, expands inclined enlarging
Structure design, the taper flow field to external diffusion is formed by the coal dust of leading portion throwing powder passage 12, and with being led to by leading portion gasifying agent
The gasifying agent in road 13 forms intersection and confluxed, and this improves the mixed aerosol effect of coal dust and gasifying agent to a certain extent, promotes
Coal dust gasification efficiency.On the other hand, this structure causes the injection direction of coal dust to get around flame, avoids forming flame directly
Impact cause cutoff, thus the burner flame stability in the present embodiment is good.
Embodiment 2
As shown in figure 1, a kind of burner, its structure compared with Example 1, except that：The steady flame section 17 it is interior
Surface rounding off, and the internal diameter of its outlet ends is equal with the internal diameter of the casing air 3, ensure that the flame tool ejected
There is higher rigidity, be not easy to be blown out by coal dust and gasifying agent etc..
Embodiment 3
As shown in figure 1, a kind of burner, its structure compared with Example 1, except that：The leading portion gasifying agent leads to
Road 13 is first shrinks the structure expanded afterwards from entrance to outlet, adds gasifying agent jet velocity, promotion gasifying agent and coal dust
Mixed aerosol.
Embodiment 4
As shown in figure 1, a kind of burner, its structure compared with Example 1, except that：Described back segment steel group
Part also includes internal layer water-cooling jacket 4 and outer layer water-cooling jacket 6, and the internal layer water-cooling jacket 4 is sheathed on the coal dust sleeve pipe 14
Outer wall, the outer layer water-cooling jacket 6 are sheathed on the outer wall of the gasifying agent sleeve pipe 15.
Internal layer water-cooling jacket 4 is set respectively in the outer wall of coal dust sleeve pipe 14 and the outer wall of gasifying agent sleeve pipe 15 in the present embodiment
With outer layer water-cooling jacket 6, the entrance and exit of cooling water is arranged on the both sides with casing air 3 for symmetry axis, and is respectively positioned on remote
From one end of leading portion bulk ceramics prefabricated component 9, this structure enhances the cooling effect to back segment steel component, relaxes high temperature spoke
The Under Thermal Fatigue Damage to back segment steel component is penetrated, reaches the purpose of protection.
Embodiment 5
As depicted in figs. 1 and 2, a kind of burner, its structure compared with Example 1, except that：Described air set
One end in pipe 3 close to described steady flame section 17 is provided with oblique tooth-shaped wind distributing hole plate 10；The oblique tooth-shaped wind distributing hole plate 10 is circle
Column type, its external diameter are engaged with the internal diameter of the casing air 3；On the oblique tooth-shaped wind distributing hole plate 10 by its center to periphery according to
It is secondary to be provided with centre bore, some straight-through air holes, side opening and some oblique air vents, the internal diameter of the centre bore and the gas sleeve
1 external diameter is engaged, and the internal diameter of the side opening is engaged with the external diameter of the ignition power pole bar 2, some described oblique air vents
Tilted in the same direction relative to the axis of described oblique tooth-shaped wind distributing hole plate 10.
Oblique tooth-shaped wind distributing hole plate 10 has eddy flow and cloth wind function, ensures that combustion air is evenly distributed, and form eddy flow stream
, so as to promote combustion air and the combustion gas aggregated mixed in the passage being exported between steady flame section 17 of gas sleeve 1, this
Burner ignition success rate and the rigidity of burner flame are favorably improved to a certain extent, and then ensure that the steady of combustion flame
It is qualitative.
Embodiment 6
As shown in figures 1 and 3, a kind of burner, its structure compared with Example 4, except that：Described back segment gas
Circumferentially arranged to have gasifying agent eddy flow part 5 in agent passage, the gasifying agent eddy flow part 5 includes central shaft and is centered around described
The swirl vane composition of central shaft surrounding, the swirl vane tilt in the same direction relative to described central shaft, gasifying agent
Eddy flow part 5 causes the mixed aerosol effect that cylindricality Swirling Flow, raising gasifying agent and coal dust are formed in leading portion gasifying agent passage 13.
Embodiment 7
As shown in figure 1, a kind of burner, its structure compared with Example 4, except that：The internal layer water-cooling jacket 4
Including the first internal layer water-cooling channel and the second internal layer water-cooling channel, the first internal layer water-cooling channel and the second internal layer water cooling
Passage connects close to one end of the leading portion bulk ceramics prefabricated component 9；The outer layer water-cooling jacket 6 includes the first outer layer water cooling
Passage and the second outer layer water-cooling channel, the first outer layer water-cooling channel and the second outer layer water-cooling channel are before described
One end connection of section bulk ceramics prefabricated component 9.
The internal layer water-cooling jacket 4 and outer layer water-cooling jacket 6 set in the present embodiment is respectively provided with double-layer structure, internal layer water cooling folder
The entrance and exit of cooling water is separately positioned on the first internal layer water-cooling channel and the second internal layer water-cooling channel away from leading portion in set 4
One end of bulk ceramics prefabricated component 9, the entrance and exit of cooling water is separately positioned on the first outer layer water cooling in outer layer water-cooling jacket 6
One end away from leading portion bulk ceramics prefabricated component 9 on passage and the second outer layer water-cooling channel, cooling water surround back segment steel component
Formation circulates, and absorbs most of heat that back segment steel component is passed in the burner course of work, improves back segment steel
The service life of component.
Embodiment 8
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of burner, its structure compared with Example 7, except that：The leading portion
The end face of the outer wall of gasifying agent passage 13 and one end end of the close leading portion bulk ceramics prefabricated component 9 of the gasifying agent sleeve pipe 15
Face is correspondingly fixedly connected, and the end face that the leading portion throws the outer wall of powder passage 12 is corresponding with the end face of the internal layer water-cooling jacket 4 solid
Fixed connection.During concrete application, to increase the junction between the leading portion bulk ceramics prefabricated component 9 and the back segment steel component
Sealing, in the junction between the leading portion bulk ceramics prefabricated component 9 and the back segment steel component fire resisting can be set flexible
Filler, for example, in the present embodiment, the leading portion throws the end face of the outer wall of powder passage 12 and the end of the internal layer water-cooling jacket 4
Refractory ceramic fibre felt 7 is provided between face, between the outer wall of the sealing construction section and the casing air 3, the outer layer
Between the outer wall of the inwall of water-cooling jacket 6 and the leading portion gasifying agent passage 13, it is provided with refractory ceramic fibre and turns round rope 8.
On the one hand fire resisting flexible filler in the present embodiment seals as seal, avoid each interchannel medium mutual
Alter and cause the hidden danger such as combustion inner pipe, also ensure that the security during firing up and throwing powder, on the other hand mended as flexible
Element is repaid, plays a part of compensating leading portion bulk ceramics prefabricated component 9 and differential expansion caused by back segment steel inter-module.
Leading portion bulk ceramics prefabricated component 9 is assembled with back segment steel component by shoulder in the present embodiment, and leaves assembly building
Gap, burner back segment steel component are connected by flange, it is possible to achieve lossless dismounting, step by step the ceramics combustion of the half steel of Automatic manual transmission half
Burner, for common steel welding burner, weld seam quantity is greatly reduced, it is reliable so as to improve burner structure
Property, while replaced with consumable accessory and greatly reduce difficulty, save cost；
Above content is that the present invention is described in further detail with reference to embodiment, it is impossible to assert that the present invention is specific
Implementation is confined to these explanations, for general technical staff of the technical field of the invention, is not departing from the present invention
Design on the premise of, some simple deduction or replace can also be made, should all be considered as belonging to the power submitted of the present invention
The protection domain that sharp claim determines.
Claims (10)
1. a kind of burner, including back segment steel component, described back segment steel component includes：
Gas sleeve (1), the gas sleeve (1) is interior to have blast tube；
Casing air (3), the casing air (3) are sheathed on the outside of the gas sleeve (1), the casing air (3)
Air duct is limited between the outer wall of inwall and the gas sleeve (1)；
Coal dust sleeve pipe (14), the coal dust sleeve pipe (14) are sheathed on the outside of the casing air (3), the coal dust sleeve pipe (14)
Inwall and the casing air (3) outer wall between limit back segment throw powder passage；
Gasifying agent sleeve pipe (15), the gasifying agent sleeve pipe (15) are sheathed on the outside of the coal dust sleeve pipe (14), the gasifying agent
Back segment gasifying agent passage is limited between the outer wall of the inwall of sleeve pipe (15) and the coal dust sleeve pipe (14)；
Ignition power pole bar (2), institute are additionally provided between the inwall of the casing air (3) and the outer wall of the gas sleeve (1)
The front end for stating ignition power pole bar (2) flushes with the port of export of the gas sleeve (1)；
It is characterized in that：Including leading portion bulk ceramics prefabricated component (9), the fixed setting of described leading portion bulk ceramics prefabricated component (9)
In the front end of described back segment steel component；
Described leading portion bulk ceramics prefabricated component (9) is a structure for including the conical surface, and it also includes with ring triple channel, and described is same
Intersect with the described conical surface outlet of ring triple channel；
Described same ring triple channel is respectively the leading portion burning gallery (11), outer positioned at leading portion bulk ceramics prefabricated component (9) center
The leading portion gasifying agent passage (13) of side, and the leading portion between leading portion burning gallery (11) and leading portion gasifying agent passage (13)
Powder passage (12) is thrown, the leading portion burning gallery (11) includes sealing construction section (16) and steady flame section (17), the sealing installation
The internal diameter of section (16) is engaged with the external diameter of the casing air (3) to be fixedly connected, and the inner chamber of described steady flame section (17) is sand
Shape is leaked, and is connected with the air duct, the leading portion is thrown powder passage (12) and connected with back segment throwing powder passage, the leading portion
Gasifying agent passage (13) connects with the back segment gasifying agent passage；
The exporting of the leading portion gasifying agent passage (13), the outlet of the steady flame section (17) are prefabricated with the leading portion bulk ceramics
The centerline axis parallel of part (9)；
The export direction that the leading portion throws powder passage (12) is expanded towards the export direction side of the leading portion gasifying agent passage (13)
Tilt.
2. burner according to claim 1, it is characterised in that：The internal diameter of the outlet ends of the steady flame section (17) and institute
The internal diameter for stating casing air (3) is equal.
3. burner according to claim 1, it is characterised in that：The leading portion gasifying agent passage (13) is from entrance to going out
Mouth first shrinks the structure expanded afterwards.
4. burner according to claim 1, it is characterised in that：Described back segment steel component also includes internal layer water cooling and pressed from both sides
(4) and outer layer water-cooling jacket (6) are covered, the internal layer water-cooling jacket (4) is sheathed on the outer wall of the coal dust sleeve pipe (14), described outer
Layer water-cooling jacket (6) is sheathed on the outer wall of the gasifying agent sleeve pipe (15).
5. burner according to claim 1, it is characterised in that：Close to described steady flame in described casing air (3)
One end of section (17) is provided with oblique tooth-shaped wind distributing hole plate (10), and the oblique tooth-shaped wind distributing hole plate (10) be cylindrical type, its external diameter and
The internal diameter of the casing air (3) is engaged；It is disposed with the oblique tooth-shaped wind distributing hole plate (10) by its center to periphery
Centre bore, some straight-through air holes, side opening and some oblique air vents, the internal diameter of the centre bore are outer with the gas sleeve (1)
Footpath is engaged, and the internal diameter of the side opening is engaged with the external diameter of the ignition power pole bar (2), and some described oblique air vents are relative
Tilted in the same direction in the axis of described oblique tooth-shaped wind distributing hole plate (10).
6. the burner according to claim 1 or 4, it is characterised in that：In described back segment gasifying agent passage, circumferentially set
Gasifying agent eddy flow part (5) is equipped with, the gasifying agent eddy flow part (5) includes central shaft and is centered around the eddy flow of the central shaft surrounding
Blade forms, and the swirl vane tilts in the same direction relative to described central shaft.
7. burner according to claim 4, it is characterised in that：The internal layer water-cooling jacket (4) includes the first internal layer water
Cold passage and the second internal layer water-cooling channel, the first internal layer water-cooling channel and the second internal layer water-cooling channel are close to described
One end connection of leading portion bulk ceramics prefabricated component (9)；The outer layer water-cooling jacket (6) includes the first outer layer water-cooling channel and second
Outer layer water-cooling channel, the first outer layer water-cooling channel and the second outer layer water-cooling channel are close to the leading portion bulk ceramics
One end connection of prefabricated component (9).
8. burner according to claim 7, it is characterised in that：The end face of leading portion gasifying agent passage (13) outer wall with
The end face of the gasifying agent sleeve pipe (15) is fixedly connected, and the leading portion throws the end face of the outer wall of powder passage (12) and the internal layer water
One end end face of the close leading portion bulk ceramics prefabricated component (9) of cold chuck (4) is corresponding to be connected.
9. burner according to claim 8, it is characterised in that：The leading portion bulk ceramics prefabricated component (9) and it is described after
Junction between section steel component is provided with fire resisting flexible filler.
10. burner according to claim 9, it is characterised in that：The leading portion throws the end face of the outer wall of powder passage (12)
Refractory ceramic fibre felt (7), the sealing construction section and the sky are provided between the end face of the internal layer water-cooling jacket (4)
Between the outer wall of gas bushing (3), the outer wall of the inwall of the outer layer water-cooling jacket (6) and the leading portion gasifying agent passage (13) it
Between, it is provided with refractory ceramic fibre and turns round rope (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710697129.6A CN107339698B (en) | 2017-08-15 | 2017-08-15 | Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710697129.6A CN107339698B (en) | 2017-08-15 | 2017-08-15 | Burner |
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| Publication Number | Publication Date |
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| CN107339698A true CN107339698A (en) | 2017-11-10 |
| CN107339698B CN107339698B (en) | 2023-05-12 |
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ID=60216964
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710697129.6A Active CN107339698B (en) | 2017-08-15 | 2017-08-15 | Burner |
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| Country | Link |
|---|---|
| CN (1) | CN107339698B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260653A (en) * | 2019-07-19 | 2019-09-20 | 长沙有色冶金设计研究院有限公司 | A kind of liftable vertical combustor system and its application method |
| CN110566941A (en) * | 2019-09-19 | 2019-12-13 | 哈尔滨锅炉厂有限责任公司 | novel gas cyclone burner for lean coal and sub-bituminous coal |
| CN111706858A (en) * | 2020-07-24 | 2020-09-25 | 李心鹏 | Pulverized coal ignition device for power station boiler and kiln |
| CN114058865A (en) * | 2021-11-11 | 2022-02-18 | 黄河科技学院 | Combined sleeve for oxygen lance and oxygen lance |
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| CN114058865A (en) * | 2021-11-11 | 2022-02-18 | 黄河科技学院 | Combined sleeve for oxygen lance and oxygen lance |
| CN114058865B (en) * | 2021-11-11 | 2023-08-04 | 黄河科技学院 | Combined sleeve for oxygen lance and oxygen lance |
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|---|---|
| CN107339698B (en) | 2023-05-12 |
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Address after: 243000, No. 2611, south section of Tianmen Avenue, Maanshan economic and Technological Development Zone, Maanshan City, Anhui Province Patentee after: KEDA CLEAN ENERGY Co.,Ltd. Patentee after: Anhui Keda New Energy Equipment Co.,Ltd. Address before: 243000, No. 2611, south section of Tianmen Avenue, Maanshan economic and Technological Development Zone, Maanshan City, Anhui Province Patentee before: KEDA CLEAN ENERGY Co.,Ltd. Patentee before: Anhui Keda Lithium Battery Equipment Co.,Ltd. |
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