CN109609195A - Fine coal burner and mounting means - Google Patents
Fine coal burner and mounting means Download PDFInfo
- Publication number
- CN109609195A CN109609195A CN201910088606.8A CN201910088606A CN109609195A CN 109609195 A CN109609195 A CN 109609195A CN 201910088606 A CN201910088606 A CN 201910088606A CN 109609195 A CN109609195 A CN 109609195A
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- cooling water
- burner
- fine coal
- cooling
- oxygen steam
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- 239000003245 coal Substances 0.000 title claims abstract description 153
- 238000002309 gasification Methods 0.000 claims abstract description 61
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 239000000498 cooling water Substances 0.000 claims description 191
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 119
- 229910052760 oxygen Inorganic materials 0.000 claims description 119
- 239000001301 oxygen Substances 0.000 claims description 119
- 238000001816 cooling Methods 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 10
- 239000002817 coal dust Substances 0.000 claims description 7
- 239000011819 refractory material Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 2
- 108091006146 Channels Proteins 0.000 description 30
- 230000007797 corrosion Effects 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000002956 ash Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010011376 Crepitations Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
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 °, present invention improves over fine coal burner hybrid modes, 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 the installation of fine coal burner The actual condition of location circumstances improves fine coal burner service life, and high-temperature region increases and the mobile deslagging for also helping gasification furnace.
Description
Technical field
The invention belongs to combustion in coal chemical industry equipment technical fields, and in particular to onto a kind of dry-powder air-current bed coal gasification apparatus
The fine coal burner and mounting means installed and used.
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
Technical problem to be solved by the present invention lies in above-mentioned the deficiencies in the prior art are overcome, provide a kind of structure it is simple,
The design of coal dust mixing and burning flow and temperature fields is reasonable, enhancing burner head heat exchange efficiency, improves fine coal burner service life
Fine coal burner and mounting means.
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.
Burner head of the invention are as follows: aerobic steam jet, fine coal jet pipe and oxygen steam jet are set outside fine coal jet pipe
Between form oxygen steam channel, cooling water jecket is provided with outside oxygen steam jet, between oxygen steam jet and cooling water jecket
Cooling water intake tunnel is formd, conical shell is provided with outside cooling water jecket, cooling is formd between cooling water jecket and conical shell
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 spray
Pipe is connected to fire end, and conical shell is provided with end face cooling lid to fire end, and end face cooling lid is connected with end face cooling lid linker,
Cooling water intake tunnel and cooling water exhalant canal are connected by end face cooling lid linker with end face cooling lid.
Fine coal jet pipe center of the invention is machined with fine coal channel, is cylindrical structure, left part in the middle part of fine coal jet pipe
The cylindrical structure for being pyramidal structure for pyramidal structure, right part and extending along conically convergent end, the length of middle part cylindrical structure
Degree L1 is 80~100mm, and the diameter D in fine coal channel is 50~60mm, the angle α of left part pyramidal structure and fine coal jet pipe center line
It is 30 °~45 °, the angle β of right part pyramidal structure and fine coal jet pipe center line is 30 °~45 °, and fine coal nozzle-end is retracted end face
The depth L2 of cooling lid end is 8~10mm.
Oxygen steam jet left part of the invention is pyramidal structure, right part is cylindrical structure, oxygen steam jet left part taper
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 pyramidal structure
The oxygen steam channel spacing L3 of formation is 5~15mm.
Cooling water jecket outer surface of the invention is machined with the equal spiral shape exhalant canal of 5~8 circle cross-sectional areas, spiral
One end of shape exhalant canal is connected with cooling water water outlet cavity, the other end is connected with end face cooling lid.
End face cooling lid center of the invention is machined with the through-hole being adapted with coal dust channel, adds on the inside of cooling end cap
The spiral shape cooling-water duct that work has 2~4 circle cross-sectional areas equal, the water inlet and cooling water of spiral shape cooling-water duct are intake
Channel 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.
Burner uniform device of the invention are as follows: burner uniform device body central position is machined with connection fine coal channel and fine coal set
The coal inlet hole of pipe is successively machined with from inside to outside into oxygen steam hole, cooling water inlet opening, cooling water on burner uniform device ontology
Water hole 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 into coal
Hole is concentric, and cooling water apopore is connected to cooling water water outlet cavity and cooling water exhalant canal, the circle center line connecting of cooling water apopore
The circle of formation and coal inlet hole are concentric, and cooling water inlet opening is connected to cooling water water inlet cavity and cooling water intake tunnel, cooling water into
The circle and coal inlet hole that the circle center line connecting in water hole is formed are concentric.
16~25 being uniformly machined on burner body of the invention 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；Burner
20~60 cooling water apopores are uniformly machined on ontology, the diameter of cooling water apopore is 4~8mm.
Gasification stove internal wall of the invention is provided with fin panel casing, is symmetrically arranged with 4 or 6 gasifications on the furnace outer wall that gasifies
Furnace connecting flange, gasification furnace connecting flange lid is provided on gasification furnace connecting flange, and fine coal burner passes through gasification furnace connecting flange
Insertion gasification furnace is simultaneously inserted into fin panel casing, is fixed by fine coal burner body connecting flange and gasification furnace connecting flange, fine coal
Refractory material is filled between burner and gasification furnace connecting flange, burner head is provided with nozzle cover, nozzle cover and film-type water-cooling
Refractory material is filled between wall, the center line of fine coal burner and the angle γ of fin panel casing median plane are 4 °~6 °.
The angle δ of the center line of the center line and burner uniform device on burner head of the invention is 2 °~3 °, and when installation presss from both sides
Angle δ should be superimposed with angle γ effect.
The present invention has the advantage that compared with the prior art
1, present invention improves over the mixing of fine coal burner and combustion system, burner flame high-temperature region range is adjusted, main flame is made
Reasonable distance is kept between fine coal burner antetheca, to reduce influence of the Fire Radiation heat to burner；
2, present invention improves fine coal burner cooling water passage structure, according to different operating conditions formulate best cooling water flow and
Flow velocity enhances burner head heat exchange efficiency；
3, the present invention changes fine coal burner head drift angle, increases burning circle of contact radius, moves down high-temperature region, thus
Improve fine coal burner installation site space combustion Flow and heat flux, improves gasification furnace slag discharge efficiency, improve fine coal burner
Service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fine coal burner 100 of the present invention.
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 fine coal burner 100 of the present invention.
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 present invention is described in further details with reference to the accompanying drawings and examples, but the present invention is not restricted to these implement
Example.
Embodiment 1
In Fig. 1, a kind of fine coal burner of the present invention, an end face of burner body, which is welded and fixed, is equipped with burner uniform device 7,
The opposing end surface of burner uniform device 7, which is welded and fixed, is equipped with burner head 8, and burner body of the invention 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 11 outside weldings of fine coal casing are fixed with
Oxygen steam inner tube 10 forms the cavity that the closed at one end, other end is in communication with the outside between oxygen steam inner tube 10 and fine coal casing 11,
The effect of the cavity be divided into two not interfere with each other coal dust channel and oxygen steam channel, mutually independent channel, two are logical
After medium in road will not cause Pipeline damage because of pipeline crack, sand holes or abrasion, chamber of mutually leaping up, coal dust and oxygen steam one
Denier chamber of leaping up will set off an explosion risk, and one end is in communication with the outside, can discharge because burner head 8 or channel because high temperature or
Material internal stress caused by stretching or deformation, if forming a closed chamber, both ends cannot all be moved freely, and inside is answered
Power can not discharge, and will cause material or weld seam tear, the fixed aerobic steam outer tube 9 of 10 outside weldings of oxygen steam inner tube, oxygen steam
Form the closed at one end, other end and burner uniform device 7 between inner tube 10 and oxygen steam outer tube 9 and burner head 8 be sequentially connected it is logical
Oxygen vapor cavity, be welded with the oxygen steam being connected through oxygen steam outer tube 9 with oxygen vapor cavity on oxygen steam outer tube 9
Inlet tube 1, oxygen steam enters oxygen vapor cavity by oxygen steam inlet tube 1, hence into burner head, outside oxygen steam outer tube 9
Portion is welded with cooling water inner tube 6, and the closed at one end, other end and the external world are formed between oxygen steam outer tube 1 and cooling water inner tube 6
The cavity being connected, the effect of the cavity are to be divided into two not interfere with each other cooling-water duct and oxygen steam channel, mutually solely
It mutually leaps up after medium in two channels will not cause Pipeline damage because of pipeline crack, sand holes or abrasion in vertical channel
Chamber, one end are in communication with the outside, and can discharge because burner head 8 or channel are because material internal caused by high temperature or stretching is answered
Power or deformation, if forming a closed chamber, both ends cannot all be moved freely, and internal stress can not discharge, and will cause material
Material or weld seam tear, the outside of cooling water inner tube 6 are successively welded with cooling water marine riser 5 and cooling water outer tube 6, in cooling water
The closed at one end, other end and burner uniform device 7 and burner head are formed between pipe 4 and cooling water marine riser 5 and cooling water outer tube 6
Portion 8 is sequentially connected logical cooling water water inlet cavity, is welded on cooling water outer tube 6 through cooling water outer tube 6 and cooling water
The cooling water inlet pipe 12 that water inlet cavity is connected, cooling water enter cooling water water inlet cavity, warp by cooling water inlet pipe 12
Supercooled water water inlet cavity enters burner head 8, cools down to burner head 8, cooling water marine riser 5 and cooling water outer tube 6
Between form cooling water and be discharged cavity, be welded on cooling water outer tube 6 and be discharged cavity through cooling water outer tube 6 and cooling water
The cooling water outlet pipe 2 being connected carries out water after cooling to burner head 8 and enters cooling water water outlet cavity, goes out through cooling water
Water pipe 2 is discharged, and burner body connecting flange 3 is welded on cooling water outer tube 6, when burner body connecting flange 3 is installed with
Gasification furnace connecting flange 300 is connected, fixed fine coal burner 100.
In Fig. 2,3, burner head of the invention is 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, the fine coal jet pipe 8-4 centre bit of the present embodiment
Set and be machined with fine coal channel, in the middle part of fine coal jet pipe 8-4 be cylindrical structure, left part is pyramidal structure, right part be pyramidal structure with
And the cylindrical structure extended along conically convergent end, the length L1 of middle part cylindrical structure is 83mm, and the diameter D in fine coal channel is
The angle α of 54mm, left part pyramidal structure and fine coal jet pipe center line is 40 °, right part pyramidal structure and fine coal jet pipe center line
Angle β is 40 °.Fine coal jet pipe 8-4 outside weldings fixed aerobic steam jet 8-5, fine coal jet pipe 8-4 and oxygen steam jet 8-5
Between form oxygen steam channel, oxygen steam jet 8-5 outside weldings are fixed with cooling water jecket 8-1, oxygen steam jet 8-5 and cold
But cooling water intake tunnel is formd between water leg 8-1, the cooling water entered by cooling water water inlet cavity is right in this channel
Burner head 8 is cooled down, and cooling water jecket 8-1 is welded with end face cooling lid linker 8-6, end face cooling lid to fire end
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 pyramidal structure, the right side
Portion is cylindrical structure, and the center of end face cooling lid linker 8-6 is designed as and oxygen steam jet 8-5 left part pyramidal structure
Adaptable pyramidal structure, oxygen steam jet 8-5 left part are set as pyramidal structure, which can be gradually increased oxygen steam and leave burning
The exit velocity in mouth portion, can reach 150m/s, and the breeze airflow that oxygen steam is sprayed with high-speed impact from fine coal jet pipe has
Conducive to oxygen and coal dust in side towards the fire atomization, mixing, burning, to form temperature field advantageously and Flow Field Distribution, oxygen steams
Vapour jet pipe 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 structure
With one heart, and 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
The oxygen steam channel spacing L3 that the pyramidal structure of 8-6 is formed is 10mm, the size and exit velocity and entire gas of this design value
The flow and temperature fields distribution changed in furnace is associated, and exit velocity more small―gap suture is bigger, and it is smaller that exit velocity gets over wide arc gap, according to
Different oxygen flows, when controlling exit velocity between 90-150m/s, which is 5~13mm, and pulverized coal friring effect is most
It is good.
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 to fire end, and end face cooling lid 8-3 and end face cooling lid connect
Logical device 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, end face
Cooling lid linker 8-6 and conical shell 8-2 intersection are provided with cooling water apopore, and cooling water intake tunnel and cooling water water outlet are logical
Road is connected by end face cooling lid linker 8-6 with end face cooling lid 8-3, and the fine coal end jet pipe 8-4 is retracted end face cooling lid
The depth L2 of the end 8-3 is 9mm.
Burner uniform device 7 of the invention is made of burner uniform device ontology, and burner uniform device body central position is machined with
It is connected to the coal inlet hole a in fine coal channel and fine coal casing, is successively machined with from inside to outside on burner uniform device ontology into oxygen steam hole
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 steam
The circle and coal inlet hole a that the circle center line connecting of hole d is formed are concentric, and cooling water apopore b connection cooling water water outlet cavity and cooling water go out
Aquaporin, 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 into
Water chamber 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, further,
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；Burner
40 cooling water inlet opening c are uniformly machined on ontology, the diameter of cooling water inlet opening c is 6mm；It is uniformly processed on burner body
There are 40 cooling water apopore b, 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 fine coal burner of the present invention is as follows, and 400 inner wall of gasification furnace is provided with fin panel casing
600,4 gasification furnace connecting flanges 300 are symmetrically fixedly installed on 400 outer wall of gasification furnace, are installed on gasification furnace connecting flange 300
There is gasification furnace connecting flange lid 200, fine coal burner 100 passes through gasification furnace connecting flange 300 and is inserted into gasification furnace 100 and is inserted into membrane type
It is fixed by fine coal burner body connecting flange 3 and gasification furnace connecting flange 300 in water-cooling wall 600, fine coal burner 100 and gasification
Refractory material is filled between furnace connecting flange 300, burner head is equipped with nozzle cover 500, nozzle cover 500 and fin panel casing
It is filled with refractory material between 600, the angle γ of the center line of fine coal burner 100 and 600 median plane of fin panel casing is 4 °, 4
A fine coal burner drift angle is 4 °, is centrally formed a circle of contact in gasification furnace 400 in this way, cuts diameter of a circle with gasification furnace 400
Diameter change, generally 100~300mm, angle γ is bigger, and tangential circle diameter of the fine coal burner 100 inside gasification furnace 400 is got over
Greatly, the tangential circle diameter of fine coal burner 100 determines mixing, atomization and the combustion efficiency of fine coal and oxygen inside gasification furnace 400,
In order to increase tangential circle diameter, the center line on the burner head 8 of the present embodiment is with the angle δ of the center line of burner uniform device 7
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 gasification
400 structure of furnace has been fixed, therefore real by the angle δ of the center line of the center line and burner uniform device 7 on transformation burner head 8
Existing tangential circle diameter becomes larger, 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, powder
The diameter D of 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 and powder
The angle β of coal jet pipe center line is 45 °, and the depth L2 that the fine coal end jet pipe 8-4 is retracted the end end face cooling lid 8-3 is 10mm,
The oxygen steam channel spacing L3 that oxygen steam jet 8-5 left part pyramidal structure is formed with fine coal jet pipe 8-4 left part pyramidal structure is
15mm is uniformly machined with 25 on burner body into oxygen steam hole d, and the diameter into oxygen steam hole d is 25mm；On burner body
Cloth is machined with 60 cooling water inlet opening c, and the diameter of cooling water inlet opening c is 8mm；Uniformly be machined on burner body 60 it is cold
But the diameter of water apopore b, cooling water apopore b are 8mm, and the thickness L4 of end face cooling lid 8-2 is 3mm, in cooling end cap 8-3
Side 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 is machined with 8 circle cross sections
The connection relationship of the equal spiral shape exhalant canal e of product, 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 (10)
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.
9. according to the mounting means of fine coal burner described in 1~8 any one of the claims, it is characterised in that: gasification furnace
Inner wall is provided with fin panel casing, and 4 or 6 gasification furnace connecting flanges, gasification furnace connection are symmetrically arranged on the furnace outer wall that gasifies
Gasification furnace connecting flange lid is provided on flange, fine coal burner passes through gasification furnace connecting flange insertion gasification furnace and is inserted into membrane type water
In cold wall, fixed by fine coal burner body connecting flange and gasification furnace connecting flange, fine coal burner and gasification furnace connecting flange it
Between be filled with refractory material, burner head is provided with nozzle cover, and refractory material, powder are filled between nozzle cover and fin panel casing
The center line of coal burner and the angle γ of fin panel casing median plane are 4 °~6 °.
10. a kind of fine coal burner mounting means according to claim 9, it is characterised in that: in the burner head
The angle δ of the center line of heart line and burner uniform device is 2 °~3 °, and angle δ should be superimposed with angle γ effect when installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088606.8A CN109609195A (en) | 2019-01-30 | 2019-01-30 | Fine coal burner and mounting means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088606.8A CN109609195A (en) | 2019-01-30 | 2019-01-30 | Fine coal burner and mounting means |
Publications (1)
| Publication Number | Publication Date |
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| CN109609195A true CN109609195A (en) | 2019-04-12 |
Family
ID=66019168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910088606.8A Pending CN109609195A (en) | 2019-01-30 | 2019-01-30 | Fine coal burner and mounting means |
Country Status (1)
| Country | Link |
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| CN (1) | CN109609195A (en) |
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| CN109929595A (en) * | 2019-05-05 | 2019-06-25 | 西安沃尔德能动科技有限公司 | A kind of modified coal dust gasification burner |
| CN110577846A (en) * | 2019-09-12 | 2019-12-17 | 杨建平 | Combustion system and burner |
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