CN209722060U - Fine coal burner - Google Patents
Fine coal burner Download PDFInfo
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- CN209722060U CN209722060U CN201920172877.7U CN201920172877U CN209722060U CN 209722060 U CN209722060 U CN 209722060U CN 201920172877 U CN201920172877 U CN 201920172877U CN 209722060 U CN209722060 U CN 209722060U
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Abstract
A kind of fine coal burner, one end face of burner body is provided with burner uniform device, the opposing end surface of burner uniform device is provided with burner head, when the burner is installed, 4~6 gasification furnace connecting flanges are provided on gasification furnace outer wall, fine coal burner passes through gasification furnace connecting flange insertion gasification furnace and is inserted into fin panel casing, it is fixed by fine coal burner body connecting flange and gasification furnace connecting flange, the center line of fine coal burner and the angle γ of fin panel casing median plane are 4 °~6 °, the utility model improves fine coal burner hybrid mode, adjust burner flame high-temperature region range, make to keep reasonable distance between main flame and fine coal burner antetheca, to reduce influence of the Fire Radiation heat to burner, change fine coal burner head drift angle, increase burning circle of contact radius, increase high-temperature region range, it moves, so as to improve fine coal burner The actual condition of installation site environment improves fine coal burner service life, and high-temperature region increases and the mobile deslagging for also helping gasification furnace.
Description
Technical field
The utility model belongs to combustion in coal chemical industry equipment technical field, and in particular to fills to a kind of dry-powder air-current bed coal-gasification
The fine coal burner and mounting means setting installation and using.
Background technique
Dry powder pressurized coal gasification technique begins at 1970s, and the gasification process is wider to coal adaptability, to coal
Ash content, sulphur content and oxygen content insensitive etc. many outstanding advantages such as the granularity of coal, caking property, coking capacity and activity are obtained
To being widely applied.
Most representational in dry powder Coal Gasification Technology is Dutch shell coal gasification, five rings producer gas and Xi'an heat
The gasification furnace of work institute two-stage coal gasification technology, these gasification process is arranged symmetrically usually using multiple burners are in pairs, encounters load
When variation, changeable can adjust burner operation number also into the coal amount of burner to adapt to production requirement.Fine coal burner is using more
Sleeve sleeve type structure, ecto-entad are cooling water layer respectively, and oxygen vapor film, bosom is fine coal channel.Fine coal passes through CO2Or
N2It carries and is sprayed into inside gasification furnace burner hearth by the fine coal jet pipe of fine coal burner, the oxygen sprayed into fine coal burner oxygen steam channel fills
Divide and be mixed and burned, provides the heat that gasification needs for burner hearth, multiple reaction, generation CO occur for the substances such as extra fine coal and steam
And H2。
Fine coal burner using 4 nozzles or 6 nozzles and burner hearth center in the opposed arrangement installation of 4 ° of -6 ° of angles, at burner hearth center
A circle of contact is formed, such furnace chamber inner combustion product generates flow rotation, and fine coal burner head forms high temperature recirculation zone, reflux
Combustion product constantly wash away its head, while burner flame itself can also generate a large amount of radiant heat, therefore burner building ring
Border is severe, and the influence for being highly prone to the factors such as surrounding flow causes burner to go wrong, now with regard to relatively conventional several damage shapes
Formula is introduced.
(1) head is cracked
Sulphur impurity is transformed into gaseous sulphide, such as SO under the high temperature conditions in coal dust2And H2S, the oxygen locating for fine coal burner
To change, in reduction alternation environment, sulfide causes the nickel-base alloy of burner centre bore edge that high-temperature sulfur corrosion preferentially occurs, and
Since the position belongs to wedge angle position, several phenomenons of stress caused by thermal stress are more obvious, and various factors ultimately forms crackle.
During gasification furnace repeatedly starting and stopping, the micro-flaw of burner central hole aggravates extension under thermal stress effect, leads to burner
Finally occurs macroscopic view cracking at head center hole.It is carried out since these crackles are along crystal grain gap, is also Edge crystal crack.
(2) head spot corrosion
Spot corrosion is that the corrosion aperture developed in depth and breadth occur in metal watch facial area, remaining area is not corroded or corrode light
Micro-, this etch state is called pitting or pitting corrosion spot corrosion.
Burner head is under severe operating condition, due to containing chloride ion etc. in cooling water, in the hot environment of head, due to
The factors image cooling water heat exchange such as local boiling heat exchange, causes local temperature excessively high, and high temperature accelerates the generation of corrosion, final broken
The protective film of bad burner metal, causes spot corrosion.
(3) head bonding corrosion
Since, there are eddy flow phenomenon, the air-flow of rotation carries the fine coal associated movement to burn secretly, not powder in gasification furnace
Coal gasification is created the residence time, but since there are centrifugal force for the air-flow of rotation, the melt and dissolved ash of high temperature is under the influence of centrifugal force
It moves to the periphery, and is gradually increased radius of motion, melt and dissolved ash gradually burns during circular motion under normal circumstances
Or gasification, part adhesive forms dross layer protection furnace wall on fin panel casing, but still has sub-fraction to be bonded in burner
On front face, cooling due to there is cooling water inside front face always, wall surface temperature is relatively low, therefore melt and dissolved grey part is rapid
Condensation, and the melt and dissolved ash of high temperature contains a large amount of corrosivity salts, and is accelerating the corrosive salts such as sulfate in the high temperature environment
The corrosiveness of class, corrosivity salt will lead to burner metal base and fall off under the action of surrounding flow, form etch pit, most
Lead to head leak parking maintenance eventually.
Summary of the invention
The technical problem to be solved by the utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of structure letter is provided
List, the design of coal dust mixing and burning flow and temperature fields is reasonable, enhance burner head heat exchange efficiency, raising fine coal burner uses the longevity
The fine coal burner and mounting means of life.
Solve above-mentioned technical problem the technical solution adopted is that: an end face of burner body is provided with burner uniform device, burn
The opposing end surface of mouth uniform device is provided with burner head, the burner body are as follows: fine coal jacket exterior is arranged in aerobic steam
Pipe, forms the cavity that the closed at one end, other end is in communication with the outside between oxygen steam inner tube and fine coal casing, outside oxygen steam inner tube
Aerobic steam outer tube is set, forms the closed at one end, other end between oxygen steam inner tube and oxygen steam outer tube and is connected with burner head
Logical oxygen vapor cavity is provided with through the oxygen steam inlet that oxygen steam outer tube is connected with oxygen vapor cavity on oxygen steam outer tube
Pipe, oxygen steam outside pipe are provided with cooling water inner tube, are formed between oxygen steam outer tube and cooling water inner tube closed at one end, another
The cavity being connected with the external world is held, cooling water inner tube has been orderly arranged outside each cooling water marine riser and cooling water outer tube, cooling water
The cooling that the closed at one end, other end is connected with burner head is formed between inner tube and cooling water marine riser and cooling water outer tube
Water water inlet cavity forms cooling water and is discharged cavity, is provided on cooling water outer tube between cooling water marine riser and cooling water outer tube
The cooling water outlet pipe that is connected through cooling water outer tube and cooling water water outlet cavity, through cooling water outer tube and cooling water water inlet
The cooling water inlet pipe that cavity is connected is provided with burner body connecting flange on cooling water outer tube.
The burner head of the utility model are as follows: aerobic steam jet, fine coal jet pipe and oxygen steam are set outside fine coal jet pipe
Oxygen steam channel is formed between jet pipe, is provided with cooling water jecket, oxygen steam jet and cooling water jecket outside oxygen steam jet
Between form cooling water intake tunnel, conical shell is provided with outside cooling water jecket, is formd between cooling water jecket and conical shell
Cooling water exhalant canal, cooling water jecket are provided with end face cooling lid linker to fire end, and end face cooling lid linker and oxygen steam
Vapour jet pipe is connected to fire end, and conical shell is provided with end face cooling lid, end face cooling lid and end face cooling lid linker phase to fire end
Connection, cooling water intake tunnel and cooling water exhalant canal are connected by end face cooling lid linker with end face cooling lid.
The fine coal jet pipe center of the utility model is machined with fine coal channel, be in the middle part of fine coal jet pipe cylindrical structure,
The cylindrical structure that left part is pyramidal structure, right part is pyramidal structure and is extended along conically convergent end, middle part cylindrical structure
Length L1 be 80~100mm, the diameter D in fine coal channel is 50~60mm, left part pyramidal structure and fine coal jet pipe center line
Angle α is 30 °~45 °, and the angle β of right part pyramidal structure and fine coal jet pipe center line is 30 °~45 °, the contracting of fine coal nozzle-end
The depth L2 of inlet side face cooling lid end is 8~10mm.
The oxygen steam jet left part of the utility model is pyramidal structure, right part is cylindrical structure, oxygen steam jet left part
Pyramidal structure and fine coal jet pipe left part pyramidal structure are concentric, and oxygen steam jet left part pyramidal structure and fine coal jet pipe left part taper
The oxygen steam channel spacing L3 that structure is formed is 5~15mm.
The cooling water jecket outer surface of the utility model is machined with the equal spiral shape exhalant canal of 5~8 circle cross-sectional areas,
One end of spiral shape exhalant canal is connected with cooling water water outlet cavity, the other end is connected with end face cooling lid.
The end face cooling lid center of the utility model is machined with the through-hole being adapted with coal dust channel, cools down in end cap
Side is machined with the equal spiral shape cooling-water duct of 2~4 circle cross-sectional areas, the water inlet and cooling water of spiral shape cooling-water duct
Intake tunnel is connected, water outlet is connected with the other end of spiral shape exhalant canal, and the thickness L4 of end face cooling lid is 1~
3mm。
The burner uniform device of the utility model are as follows: burner uniform device body central position is machined with connection fine coal channel and powder
The coal inlet hole of coal casing is successively machined with from inside to outside into oxygen steam hole, cooling water inlet opening, cooling on burner uniform device ontology
Water apopore is connected to oxygen vapor cavity and oxygen steam channel into oxygen steam hole, into oxygen steam hole the circle that is formed of circle center line connecting with
Coal inlet hole is concentric, and cooling water apopore is connected to cooling water water outlet cavity and cooling water exhalant canal, the center of circle of cooling water apopore
The circle and coal inlet hole that line is formed are concentric, and cooling water inlet opening is connected to cooling water water inlet cavity and cooling water intake tunnel, cooling
The circle and coal inlet hole that the circle center line connecting of water inlet opening is formed are concentric.
16~25 are uniformly machined on the burner body of the utility model into oxygen steam hole, the diameter into oxygen steam hole is
20~25mm；20~60 cooling water inlet openings are uniformly machined on burner body, the diameter of cooling water inlet opening is 4~8mm；
20~60 cooling water apopores are uniformly machined on burner body, the diameter of cooling water apopore is 4~8mm.
The gasification stove internal wall of the utility model is provided with fin panel casing, is symmetrically arranged with 4 or 6 on the furnace outer wall that gasifies
A gasification furnace connecting flange, gasification furnace connecting flange lid is provided on gasification furnace connecting flange, and fine coal burner connects across gasification furnace
Acting flange insertion gasification furnace is simultaneously inserted into fin panel casing, is consolidated by fine coal burner body connecting flange and gasification furnace connecting flange
It is fixed, refractory material is filled between fine coal burner and gasification furnace connecting flange, burner head is provided with nozzle cover, nozzle cover and film
It is filled with refractory material between formula water-cooling wall, the angle γ of the center line of fine coal burner and fin panel casing median plane is 4 °~
6°。
The angle δ of the center line of the center line and burner uniform device on the burner head of the utility model is 2 °~3 °, installation
When angle δ should be superimposed with angle γ effect.
The utility model has the advantage that compared with the prior art
1, the utility model improves the mixing of fine coal burner and combustion system, adjusts burner flame high-temperature region range, makes to lead
Reasonable distance is kept between flame and fine coal burner antetheca, to reduce influence of the Fire Radiation heat to burner；
2, the utility model improves fine coal burner cooling water passage structure, formulates best cooling water flow according to different operating conditions
Amount and flow velocity enhance burner head heat exchange efficiency；
3, the utility model changes fine coal burner head drift angle, increases burning circle of contact radius, moves down high-temperature region,
So as to improve fine coal burner installation site space combustion Flow and heat flux, gasification furnace slag discharge efficiency is improved, fine coal is improved
Burner service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model fine coal burner 100.
Fig. 2 is the structural schematic diagram on burner head 8 in Fig. 1.
Fig. 3 is the structural schematic diagram of cooling lid 8-3 in end face in Fig. 2.
Fig. 4 is the scheme of installation of the utility model fine coal burner 100.
Fig. 5 is another set-up mode structural schematic diagram of fine coal burner 100 in Fig. 4.
In figure: 1, oxygen steam inlet tube；2, cooling water outlet pipe；3, burner body connecting flange；4, cooling water inner tube；5,
Cooling water marine riser；6, cooling water outer tube；7, burner uniform device；8, burner head；9, oxygen steam outer tube；10, oxygen steam inner tube；
11, fine coal casing；12, cooling water inlet pipe；8-1, cooling water jecket；8-2, conical shell；8-3, end face cooling lid；8-4, fine coal spray
Pipe；8-5, oxygen steam jet；8-6, end face cooling lid linker；A, oxygen steam is into hole；B, cooling water apopore；C, cooling water into
Water hole；D, into oxygen steam hole；E, spiral shape exhalant canal；F, spiral shape cooling-water duct；100, fine coal burner；200, gasification furnace
Connecting flange lid；300, gasification furnace connecting flange；400, gasification furnace；500, nozzle cover；600, fin panel casing.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and examples, but the utility model is not limited to this
A little embodiments.
Embodiment 1
In Fig. 1, a kind of fine coal burner of the utility model, an end face of burner body is welded and fixed that be equipped with burner uniformly distributed
Device 7, the opposing end surface of burner uniform device 7, which is welded and fixed, is equipped with burner head 8, and the burner body of the utility model is by oxygen steam
Inlet tube 1；Cooling water outlet pipe 2, burner body connecting flange 3, cooling water inner tube 4, cooling water marine riser 5, cooling water outer tube
6, oxygen steam outer tube 9, oxygen steam inner tube 10, fine coal casing 11, cooling water inlet pipe 12 connect and compose, and weld outside fine coal casing 11
Fixed aerobic steam inner tube 10 is connect, forms the closed at one end, other end and the external world between oxygen steam inner tube 10 and fine coal casing 11 even
Logical cavity, the effect of the cavity are to be divided into two not interfere with each other coal dust channel and oxygen steam channel, is mutually independent logical
Road, after the medium in two channels will not cause Pipeline damage because of pipeline crack, sand holes or abrasion, chamber of mutually leaping up, coal dust
Will set off an explosion risk with oxygen steam chamber of once leaping up, one end is in communication with the outside, can discharge because burner head 8 or channel because
For high temperature or caused material internal stress or deformation are stretched, if forming a closed chamber, both ends all cannot be free
Mobile, internal stress can not discharge, and will cause material or weld seam tear, and 10 outside weldings of oxygen steam inner tube are fixed outside aerobic steam
Pipe 9 forms the closed at one end, other end and burner uniform device 7 and burner head 8 between oxygen steam inner tube 10 and oxygen steam outer tube 9
It is sequentially connected logical oxygen vapor cavity, is welded on oxygen steam outer tube 9 and is connected through oxygen steam outer tube 9 with oxygen vapor cavity
Logical oxygen steam inlet tube 1, oxygen steam enter oxygen vapor cavity by oxygen steam inlet tube 1, and hence into burner head, oxygen steams
9 outside weldings of vapour outer tube are fixed with cooling water inner tube 6, are formed between oxygen steam outer tube 1 and cooling water inner tube 6 closed at one end, another
The cavity that one end is connected with the external world, the effect of the cavity is to be divided into cooling-water duct and oxygen steam channel two not do mutually
It disturbs, mutually independent channel, the medium in two channels will not cause Pipeline damage because of pipeline crack, sand holes or abrasion
Afterwards, it mutually leaps up chamber, one end is in communication with the outside, and can discharge because burner head 8 or channel are because of high temperature or caused by stretching
Material internal stress or deformation, if forming a closed chamber, both ends cannot all be moved freely, and internal stress can not be released
It puts, will cause material or weld seam tear, 6 outside of cooling water inner tube is successively welded with outside cooling water marine riser 5 and cooling water
Pipe 6, forms the closed at one end, other end between cooling water inner tube 4 and cooling water marine riser 5 and cooling water outer tube 6 and burner is equal
Cloth device 7 and burner head 8 are sequentially connected logical cooling water water inlet cavity, are welded on cooling water outer tube 6 through cooling water
The cooling water inlet pipe 12 that outer tube 6 is connected with cooling water water inlet cavity, cooling water enter cooling by cooling water inlet pipe 12
Water water inlet cavity, enters burner head 8 through supercooled water intake antrum body, cools down to burner head 8, cooling water marine riser 5
Form cooling water between cooling water outer tube 6 and be discharged cavity, be welded on cooling water outer tube 6 through cooling water outer tube 6 with
The cooling water outlet pipe 2 that cooling water water outlet cavity is connected, carries out water after cooling to burner head 8 and enters cooling water water chamber
Body is discharged through cooling water outlet pipe 2, and burner body connecting flange 3, burner body connection are welded on cooling water outer tube 6
Flange 3 is connected when installing with gasification furnace connecting flange 300, fixed fine coal burner 100.
In Fig. 2,3, the burner head of the utility model by cooling water jecket 8-1, conical shell 8-2, end face cooling lid 8-3,
Fine coal jet pipe 8-4, oxygen steam jet 8-5, end face cooling lid linker 8-6 are connected and composed, in the fine coal jet pipe 8-4 of the present embodiment
Heart position is machined with fine coal channel, and in the middle part of fine coal jet pipe 8-4 be cylindrical structure, left part is pyramidal structure, right part is taper knot
Structure and the cylindrical structure extended along conically convergent end, the length L1 of middle part cylindrical structure are 83mm, fine coal channel it is straight
Diameter D is 54mm, and the angle α of left part pyramidal structure and fine coal jet pipe center line is 40 °, right part pyramidal structure and fine coal jet pipe center
The angle β of line is 40 °.Fine coal jet pipe 8-4 outside weldings fixed aerobic steam jet 8-5, fine coal jet pipe 8-4 and the spray of oxygen steam
Oxygen steam channel is formed between pipe 8-5, oxygen steam jet 8-5 outside weldings are fixed with cooling water jecket 8-1, oxygen steam jet 8-
Cooling water intake tunnel is formd between 5 and cooling water jecket 8-1, the cooling water entered by cooling water water inlet cavity is in this channel
Interior to cool down to burner head 8, cooling water jecket 8-1 is welded with end face cooling lid linker 8-6, end face to fire end
Cooling lid linker 8-6 and oxygen steam jet 8-5 is mutually welded to fire end, and the oxygen steam jet 8-5 left part of the present embodiment is taper
Structure, right part are cylindrical structure, and the center of end face cooling lid linker 8-6 is designed as and oxygen steam jet 8-5 left part
The adaptable pyramidal structure of pyramidal structure, oxygen steam jet 8-5 left part are set as pyramidal structure, which can be gradually increased oxygen steaming
Vapour leaves the exit velocity on burner head, can reach 150m/s, the coal that oxygen steam is sprayed with high-speed impact from fine coal jet pipe
Powder air-flow is conducive to oxygen and coal dust in side towards the fire atomization, mixing, burning, to form temperature field and flow field advantageously
Distribution, oxygen steam jet 8-5 left part pyramidal structure and fine coal jet pipe 8-4 left part pyramidal structure and end face cooling lid linker 8-
6 pyramidal structures are concentric, and oxygen steam jet 8-5 left part pyramidal structure and fine coal jet pipe 8-4 left part pyramidal structure and end face are cold
But the oxygen steam channel spacing L3 that the pyramidal structure of lid linker 8-6 is formed is 10mm, the size and outlet stream of this design value
Flow and temperature fields distribution in fast and entire gasification furnace is associated, and exit velocity more small―gap suture is bigger, between exit velocity is bigger
Gap is smaller, and according to different oxygen flows, when controlling exit velocity between 90-150m/s, which is 5~13mm, fine coal
Combustion efficiency is best.
Cooling water jecket 8-1 outside weldings are fixed with conical shell 8-2, form between cooling water jecket 8-1 and conical shell 8-2 cold
But water exhalant canal, conical shell 8-2 are welded with end face cooling lid 8-3, end face cooling lid 8-3 and end face cooling lid to fire end
Linker 8-6 phase is welded, and end face cooling lid linker 8-6 and oxygen steam jet 8-5 intersection are provided with cooling water inlet opening, is held
Face cooling lid linker 8-6 and conical shell 8-2 intersection are provided with cooling water apopore, cooling water intake tunnel and cooling water water outlet
Channel is connected by end face cooling lid linker 8-6 with end face cooling lid 8-3, and it is cooling that the fine coal end jet pipe 8-4 is retracted end face
The depth L2 for covering the end 8-3 is 9mm.
The burner uniform device 7 of the utility model is made of burner uniform device ontology, and burner uniform device body central position adds
Work has the coal inlet hole a in connection fine coal channel and fine coal casing, is successively machined on burner uniform device ontology into oxygen and is steamed from inside to outside
Steam vent d, cooling water inlet opening c, cooling water apopore b are connected to oxygen vapor cavity and oxygen steam channel into oxygen steam hole d, into oxygen
The circle and coal inlet hole a that the circle center line connecting of steam hole d is formed are concentric, and cooling water apopore b is connected to cooling water water outlet cavity and cooling
Water exhalant canal, the circle and coal inlet hole a that the circle center line connecting of cooling water apopore b is formed are concentric, cooling water inlet opening c connection cooling
Water water inlet cavity and cooling water intake tunnel, the circle and coal inlet hole a that the circle center line connecting of cooling water inlet opening c is formed are concentric, into one
Step, 20 are uniformly machined on the burner body of the present embodiment into oxygen steam hole d, the diameter into oxygen steam hole d is 22.5mm；
40 cooling water inlet opening c are uniformly machined on burner body, the diameter of cooling water inlet opening c is 6mm；It is uniformly distributed on burner body
40 cooling water apopore b are machined with, the diameter of cooling water apopore b is 6mm.
The thickness L4 of the end face cooling lid 8-2 of the present embodiment is 2mm, and the end face center cooling lid 8-2 is machined with and coal
The adaptable through-hole in powder channel, the cooling inside end cap 8-3 are machined with the equal spiral shape cooling-water duct f of 3 circle cross-sectional areas, spiral shell
The water inlet of rotation shape cooling-water duct f is connected with cooling water intake tunnel, and cooling water enters spiral by cooling water intake tunnel
Shape cooling-water duct f, cools down burner head 8, which increases the film-cooled heat to burner head 8, and entire end face is complete
Portion is covered with cooling water, avoids the region of cooling water being not achieved, and cooling effect is more preferable, the rotation shape cooling-water duct of the present embodiment
The each circle of f is all concentric structure, is separated after interrupting between two adjacent rings with partition, water route connection circulation is realized, in order to guarantee
Good heat transfer effect and uniform water velocity, the area equation of each circle.The outer surface cooling water jecket 8-1 is machined with 6 circles
One end of cross-sectional area equal spiral shape exhalant canal e, spiral shape exhalant canal e pass through cooling water apopore b and cooling water
Cavity is connected, the other end is connected with spiral shape cooling-water duct f water outlet, the water in spiral shape cooling-water duct f for water outlet
It is flowed into cooling water water chamber body by spiral shape exhalant canal e through supercooled water apopore b, spiral shape exhalant canal e increase is burnt
The film-cooled heat in mouth portion 8 and the flow velocity of cooling water, cooling effect is more preferable, and circle number depends on cooling water flow and burner head 8
Size, further, the spiral shape exhalant canal e of the present embodiment it is each circle be all concentric structure, beaten between two adjacent rings
It has no progeny and is separated with partition, water route connection circulation is realized, in order to guarantee good heat transfer effect and uniform water velocity, each circle
Cross-sectional area it is equal, cross section is equal to ensure that the uniform of head flow velocity, and then the coefficient of heat transfer is consistent, avoids head heated not
Material internal thermal stress caused by.
In Fig. 4,5, the mounting means of the utility model fine coal burner is as follows, and 400 inner wall of gasification furnace is provided with membrane type water
Cold wall 600, is symmetrically fixedly installed with 4 gasification furnace connecting flanges 300 on 400 outer wall of gasification furnace, on gasification furnace connecting flange 300
Gasification furnace connecting flange lid 200 is installed, fine coal burner 100 passes through gasification furnace connecting flange 300 and is inserted into gasification furnace 100 and is inserted into
It is fixed by fine coal burner body connecting flange 3 and gasification furnace connecting flange 300 in fin panel casing 600, fine coal burner 100 with
Refractory material is filled between gasification furnace connecting flange 300, burner head is equipped with nozzle cover 500, nozzle cover 500 and membrane type water
Refractory material is filled between cold wall 600, the angle γ of the center line and 600 median plane of fin panel casing of fine coal burner 100 is
4 °, 4 fine coal burner drift angles are 4 °, are centrally formed a circle of contact in gasification furnace 400 in this way, cut diameter of a circle with gasification furnace
400 diameter change, generally 100~300mm, angle γ is bigger, and the circle of contact of the fine coal burner 100 inside gasification furnace 400 is straight
Diameter is bigger, and the tangential circle diameter of fine coal burner 100 determines mixing, atomization and the burning of fine coal and oxygen inside gasification furnace 400
Effect, in order to increase tangential circle diameter, the angle δ of the center line of the center line and burner uniform device 7 on the burner head 8 of the present embodiment
It is 2.24 °, angle δ should be superimposed with angle γ effect when installation, makes to cut diameter of a circle and becomes larger, in actual production, because of gas
Change 400 structure of furnace to have fixed, therefore the angle δ of the center line by the center line and burner uniform device 7 on transformation burner head 8
Realize becoming larger for tangential circle diameter, it is easier to realize, and save cost.
Embodiment 2
In above-described embodiment 1, in the middle part of the fine coal jet pipe 8-4 of the present embodiment be cylindrical structure, left part is pyramidal structure, the right side
Portion is pyramidal structure and the cylindrical structure along the extension of conically convergent end, and the length L1 of middle part cylindrical structure is 80mm, powder
The diameter D of coal channel is 50mm, and the angle α of left part pyramidal structure and fine coal jet pipe center line is 30 °, right part pyramidal structure and powder
The angle β of coal jet pipe center line is 30 °, and the depth L2 that the fine coal end jet pipe 8-4 is retracted the end end face cooling lid 8-3 is 8mm, oxygen
The oxygen steam channel spacing L3 that steam jet 8-5 left part pyramidal structure and fine coal jet pipe 8-4 left part pyramidal structure are formed is 5mm,
16 are uniformly machined on burner body into oxygen steam hole d, the diameter into oxygen steam hole d is 20mm；Uniformly add on burner body
Work has 20 cooling water inlet opening c, and the diameter of cooling water inlet opening c is 4mm；20 cooling waters are uniformly machined on burner body
The diameter of apopore b, cooling water apopore b are 4mm, and the thickness L4 of end face cooling lid 8-2 is 1mm, are added on the inside of cooling end cap 8-3
The outer surface spiral shape cooling-water duct f, cooling water jecket 8-1 that work has 2 circle cross-sectional areas equal is machined with 5 circle cross-sectional area phases
Deng spiral shape exhalant canal e, the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 3
In above-described embodiment 1, in the middle part of the fine coal jet pipe 8-4 of the present embodiment be cylindrical structure, left part is pyramidal structure, the right side
Portion is pyramidal structure and the cylindrical structure along the extension of conically convergent end, and the length L1 of middle part cylindrical structure is 100mm,
The diameter D in fine coal channel is 60mm, and the angle α of left part pyramidal structure and fine coal jet pipe center line is 45 °, right part pyramidal structure with
The angle β of fine coal jet pipe center line is 45 °, and the depth L2 of the fine coal end the jet pipe 8-4 retraction end end face cooling lid 8-3 is
The oxygen steam channel spacing L3 that 10mm, oxygen steam jet 8-5 left part pyramidal structure and fine coal jet pipe 8-4 left part pyramidal structure are formed
For 15mm, 25 are uniformly machined on burner body into oxygen steam hole d, the diameter into oxygen steam hole d is 25mm；On burner body
60 cooling water inlet opening c are uniformly machined with, the diameter of cooling water inlet opening c is 8mm；60 are uniformly machined on burner body
The diameter of cooling water apopore b, cooling water apopore b are 8mm, and the thickness L4 of end face cooling lid 8-2 is 3mm, cooling end cap 8-3
Inside is machined with the equal outer surface spiral shape cooling-water duct f, cooling water jecket 8-1 of 4 circle cross-sectional areas, and to be machined with 8 circles transversal
The connection relationship of the spiral shape exhalant canal e of area equation, remaining each components and components is identical with embodiment 1.
Embodiment 4
In above-described embodiment 1~3,4 gasification furnace connections are symmetrically fixedly installed on 400 outer wall of gasification furnace of the present embodiment
Flange 300, in order to increase tangential circle diameter, the angle γ of the center line and 600 median plane of fin panel casing of fine coal burner 100 is
6 °, the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 5
In above-described embodiment 1~3,6 gasification furnace connections are symmetrically fixedly installed on 400 outer wall of gasification furnace of the present embodiment
The angle γ of flange 300, the center line of fine coal burner 100 and 600 median plane of fin panel casing is 4 °, remaining each components and
The connection relationship of components is identical with embodiment 1.
Embodiment 6
In above-described embodiment 1~3,6 gasification furnace connections are symmetrically fixedly installed on 400 outer wall of gasification furnace of the present embodiment
Flange 300, in order to increase tangential circle diameter, the angle γ of the center line and 600 median plane of fin panel casing of fine coal burner 100 is
6 °, the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 7
In above-described embodiment 1~6, the center line of the center line and burner uniform device 7 on the burner head 8 of the present embodiment
Angle δ is 2 °, and the connection relationship of remaining each components and components is identical with embodiment 1.
Embodiment 8
In above-described embodiment 1~6, the center line of the center line and burner uniform device 7 on the burner head 8 of the present embodiment
Angle δ is 3 °, and the connection relationship of remaining each components and components is identical with embodiment 1.
Claims (8)
1. a kind of fine coal burner, it is characterised in that: an end face of burner body is provided with burner uniform device, the phase of burner uniform device
Burner head, the burner body are provided with to end face are as follows: fine coal jacket exterior is arranged aerobic steam inner tube, oxygen steam inner tube
The cavity that the closed at one end, other end is in communication with the outside is formed between fine coal casing, and aerobic steam is set outside oxygen steam inner tube
Outer tube forms the oxygen vapor chamber that the closed at one end, other end is connected with burner head between oxygen steam inner tube and oxygen steam outer tube
Body, is provided with the oxygen steam inlet tube being connected through oxygen steam outer tube with oxygen vapor cavity on oxygen steam outer tube, outside oxygen steam
It is provided with cooling water inner tube outside pipe, forms the closed at one end, other end and extraneous phase between oxygen steam outer tube and cooling water inner tube
The cavity of connection, cooling water inner tube have been orderly arranged outside each cooling water marine riser and cooling water outer tube, cooling water inner tube and cooling
The cooling water intake antrum that the closed at one end, other end is connected with burner head is formed between water marine riser and cooling water outer tube
Body forms cooling water and is discharged cavity, is provided on cooling water outer tube through cooling between cooling water marine riser and cooling water outer tube
Cooling water outlet pipe that water outer tube and cooling water water outlet cavity are connected, cavity of intaking through cooling water outer tube and cooling water are connected
Logical cooling water inlet pipe is provided with burner body connecting flange on cooling water outer tube.
2. fine coal burner according to claim 1, it is characterised in that the burner head are as follows: setting outside fine coal jet pipe
Aerobic steam jet forms oxygen steam channel, is provided with cooling outside oxygen steam jet between fine coal jet pipe and oxygen steam jet
Water leg forms cooling water intake tunnel, cone is provided with outside cooling water jecket between oxygen steam jet and cooling water jecket
Shell, forms cooling water exhalant canal between cooling water jecket and conical shell, cooling water jecket is provided with end face cooling lid to fire end
Linker, end face cooling lid linker are connected with oxygen steam jet to fire end, and conical shell is provided with end face cooling lid to fire end, end
Face cooling lid is connected with end face cooling lid linker, and cooling water intake tunnel and cooling water exhalant canal pass through end face cooling lid
Linker is connected with end face cooling lid.
3. fine coal burner according to claim 2, it is characterised in that: the fine coal jet pipe center is machined with fine coal
Channel, fine coal jet pipe middle part is cylindrical structure, left part is pyramidal structure, right part is pyramidal structure and is prolonged along conically convergent end
The cylindrical structure stretched, the length L1 of middle part cylindrical structure are 80~100mm, and the diameter D in fine coal channel is 50~60mm, left
The angle α of portion's pyramidal structure and fine coal jet pipe center line is 30 °~45 °, the folder of right part pyramidal structure and fine coal jet pipe center line
Angle beta is 30 °~45 °, and the depth L2 that fine coal nozzle-end is retracted end face cooling lid end is 8~10mm.
4. fine coal burner according to claim 3, it is characterised in that: the oxygen steam jet left part be pyramidal structure,
Right part is cylindrical structure, and oxygen steam jet left part pyramidal structure and fine coal jet pipe left part pyramidal structure are concentric, and oxygen steam sprays
The oxygen steam channel spacing L3 that pipe left part pyramidal structure and fine coal jet pipe left part pyramidal structure are formed is 5~15mm.
5. fine coal burner according to claim 4, it is characterised in that: the cooling water jecket outer surface is machined with 5~8
The equal spiral shape exhalant canal of cross-sectional area is enclosed, one end of spiral shape exhalant canal is connected, separately with cooling water water outlet cavity
One end is connected with end face cooling lid.
6. fine coal burner according to claim 5, it is characterised in that: the end face cooling lid center be machined with
The adaptable through-hole of coal dust channel, cooling end cap inside are machined with the equal spiral shape cooling-water duct of 2~4 circle cross-sectional areas,
The water inlet of spiral shape cooling-water duct is connected with cooling water intake tunnel, the other end of water outlet and spiral shape exhalant canal
It is connected, the thickness L4 of end face cooling lid is 1~3mm.
7. fine coal burner according to claim 6, it is characterised in that the burner uniform device are as follows: burner uniform device ontology
Center is machined with the coal inlet hole in connection fine coal channel and fine coal casing, successively processes from inside to outside on burner uniform device ontology
Have into oxygen steam hole, cooling water inlet opening, cooling water apopore, be connected to oxygen vapor cavity and oxygen steam channel into oxygen steam hole,
The circle and coal inlet hole formed into the circle center line connecting of oxygen steam hole is concentric, and cooling water apopore is connected to cooling water water outlet cavity and cooling
Water exhalant canal, the circle and coal inlet hole that the circle center line connecting of cooling water apopore is formed are concentric, and cooling water inlet opening is connected to cooling water
Water inlet cavity and cooling water intake tunnel, the circle and coal inlet hole that the circle center line connecting of cooling water inlet opening is formed are concentric.
8. fine coal burner according to claim 7, it is characterised in that: be uniformly machined with 16~25 on the burner body
It is a into oxygen steam hole, the diameter into oxygen steam hole is 20~25mm；Uniformly be machined on burner body 20~60 cooling waters into
Water hole, the diameter of cooling water inlet opening are 4~8mm；20~60 cooling water apopores are uniformly machined on burner body, it is cooling
The diameter of water apopore is 4~8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920172877.7U CN209722060U (en) | 2019-01-30 | 2019-01-30 | Fine coal burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920172877.7U CN209722060U (en) | 2019-01-30 | 2019-01-30 | Fine coal burner |
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| CN209722060U true CN209722060U (en) | 2019-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609195A (en) * | 2019-01-30 | 2019-04-12 | 陕西宏远燃烧设备有限公司 | Fine coal burner and mounting means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609195A (en) * | 2019-01-30 | 2019-04-12 | 陕西宏远燃烧设备有限公司 | Fine coal burner and mounting means |
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