CN109268870A - A kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction - Google Patents
A kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction Download PDFInfo
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- CN109268870A CN109268870A CN201811280680.1A CN201811280680A CN109268870A CN 109268870 A CN109268870 A CN 109268870A CN 201811280680 A CN201811280680 A CN 201811280680A CN 109268870 A CN109268870 A CN 109268870A
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- 239000003245 coal Substances 0.000 title claims abstract description 333
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 230000002459 sustained effect Effects 0.000 claims abstract description 7
- 239000002817 coal dust Substances 0.000 claims description 197
- 238000000034 method Methods 0.000 claims description 16
- 238000010304 firing Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 29
- 239000000843 powder Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/1006—Mills adapted for use with furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/30—Separating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/10—Supply line fittings
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- General Engineering & Computer Science (AREA)
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Abstract
The present invention discloses a kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction, including several double inlet and outlet coal mills, pulverized coal channel and tangential boiler, and the angular region of tangential boiler is equipped with coal burner along short transverse layering；Every double inlet and outlet coal mill is equipped with the first discharge port and the second discharge port, first discharge port is connect by pulverized coal channel with the coal burner of tangential boiler angular region sustained height, and the second discharge port is connect by pulverized coal channel with the coal burner of tangential boiler angular region sustained height；And the first discharge port of at least one double inlet and outlet coal mill is connect with non-conterminous two layers of the coal burner of tangential boiler angular region short transverse with the second discharge port by pulverized coal channel respectively.Present invention ensures that not to a certain angle deflection of burner hearth, the flame kernel absolute altitude of tangential boiler is basically unchanged at boiler flame center in any one coal pulverizer of start and stop, the flexibility scheduling requirement of fast lifting load is adapted to, improves the degree of filling of burner hearth flame.
Description
Technical field
The invention belongs to boiler technology field, in particular to a kind of pulverized coal preparation system that flame kernel is controllable mill dislocation coal pipe
Road arragement construction.
Background technique
The clean energy resourcies such as solar energy, wind energy are environmentally friendly, but it is big to be limited by the fluctuation of natural conditions varying loading；Power grid
The digestion capability of new energy is required to incrementally increase, however having quick, depth peak modulation capacity Thermal generation unit is branch
The important component for supportting generation of electricity by new energy, as new energy installed capacity is gradually increased in power grid, to Thermal generation unit
The demand of peak modulation capacity also gradually rises.
Existing pulverized-coal fired boiler pulverized coal preparation system arrangement form is general are as follows:
1, the powder system processed that a coal pulverizer coal dust classifier passes through the connection of one layer of coal burner of pulverized coal channel and boiler
It unites arrangement, when load reduction or coal pulverizer cleaning maintenance cause certain coal pulverizer needs to be shut down, then coupled burning
Device is out of service, and respective heights section stops coal dust feeding in furnace, this will lead to in-furnace temperature changes in distribution, furnace flame center
Change in location, furnace flame center are affected to radiation characteristic in furnace, and then influence steam parameter, roof of the furnace screen formula
Superheater tube wall temperature.In fast lifting load process, the variation of furnace flame center will cause steam parameter shakiness, metal tube
The problems such as wall overtemperature；In depth peak regulation ultra-low load (20-40%BMCR) operation, furnace flame center deviation design value may
The problems such as causing the relatively low influence boiler economics of steam parameter, metal pipe-wall overtemperature to threaten unit safety in operation.
2, the pulverized coal preparation system arrangement that a coal pulverizer coal dust classifier is connected with one layer of burner of boiler, there is document
It is proposed that the arrangement that a coal pulverizer is connect with one jiao of four layers of burner on Process In A Tangential Firing is imagined.The arrangement energy
Enough reduce influence of the Coal pulverizer to flame kernel height, but the stoppage in transit of separate unit coal pulverizer will cause in furnace under the arrangement
Burner running with less angles, furnace flame center are unfavorable for burning tissues in furnace, furnace wall cooling and transport safely to a certain angle deflection
Row.If two coal pulverizers of adjacent angular are stopped transport, furnace flame center deflection situation can further deteriorate, this will give boiler actual motion
Bring problems.
Traditional pulverized-coal fired boiler is under existing pulverized coal preparation system connection type, coal pulverizer combination fortune in fast lifting load process
After row state change, boiler flame center can be significantlyd change, and lead to combustion conditions shakiness in boiler, easily cause fast lifting negative
Temperature fluctuation is big when lotus, heavy-duty service when the safety issues such as overtemperature of tube wall；Existing pulverized coal preparation system arrangement is difficult to meet
Unit safety, economy demand when fast lifting load, depth peak regulation.
Summary of the invention
For above-mentioned the technical problems existing in the prior art, the purpose of the present invention is to provide a kind of flame kernel is controllable
Pulverized coal preparation system mill dislocation pulverized coal channel arragement construction, to solve in fast lifting load process, coal pulverizer operating status variation
The technical issues of boiler flame center significantlys change afterwards.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction, including several mills that go with each other all the time
The angular region of coal machine, pulverized coal channel and tangential boiler, tangential boiler is equipped with coal burner along short transverse layering；Every double into double
Coal pulverizer is equipped with the first discharge port and the second discharge port out, and the first discharge port passes through pulverized coal channel and the same height in tangential boiler angular region
The same layer coal burner of degree connects, and the second discharge port passes through the same layer coal dust of pulverized coal channel and tangential boiler angular region sustained height
Burner connection；And at least one double inlet and outlet coal mill the first discharge port and the second discharge port by pulverized coal channel respectively with
Non-conterminous two layers of coal burner connection of tangential boiler angular region short transverse.
Further, coal dust classifier is provided between double inlet and outlet coal mill and pulverized coal channel.
Further, tangential boiler is using any in Process In A Tangential Firing, six-corner tangential boiler or octagonal tangential boiler
It is a kind of.
Further, double inlet and outlet coal mill uses double-inlet and double-outlet steel ball coal mill.
Further, the coal pulverizer to go with each other all the time is three, and the angular region of tangential boiler is provided with six layers of coal along short transverse
Powder burner.
Further, the first discharge port of each double inlet and outlet coal mill and the second discharge port pass through pulverized coal channel and distinguish
It is connect with non-conterminous two layers of the coal burner of tangential boiler angular region short transverse.
Compared with prior art, the invention has the benefit that
One of coal pulverizer in a kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction of the present invention
Discharge port is connect by pulverized coal channel with the same layer coal burner of tangential boiler angular region sustained height, it is ensured that is opened in coal pulverizer
Stopping time tangential boiler flame kernel will not be to a certain angle deflection of burner hearth；
Further, two discharge ports of at least one double inlet and outlet coal mill respectively with tangential boiler angular region short transverse
Non-conterminous two layers of coal burner connects, and the flame kernel absolute altitude of tangential boiler is basically unchanged after one coal pulverizer of start and stop, can
The flexibility scheduling requirement for adapting to fast lifting load, improves the degree of filling of burner hearth flame, so that burning is more stable, peace
Entirely, economical.
Detailed description of the invention
Fig. 1 is a kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction structural representation of the present invention
Figure；
Fig. 2 is 1 pulverized-coal fired boiler pulverized coal preparation system structural schematic diagram of the embodiment of the present invention；
Fig. 3 is coal pulverizer and connecting structure for combustor block diagram in pulverized-coal fired boiler powder described in 1-5 of the embodiment of the present invention；
Fig. 4 is coal pulverizer and connecting structure for combustor block diagram in pulverized-coal fired boiler powder described in 6-14 of the embodiment of the present invention.
Wherein, 1 Process In A Tangential Firing, 2 coal burners, 3 pulverized coal channels, 4 double inlet and outlet coal mills, 5 coal dust classifiers；
21 first coal burners, 22 second coal burners, 23 third coal burners, 24 the 4th coal burners, 25 the 5th coals
Powder burner, 26 the 6th coal burners；41 first double inlet and outlet coal mills, 42 second double inlet and outlet coal mills, 43 thirds are double
Into double coal pulverizers out；51 first coal dust classifiers, 52 second coal dust classifiers, 53 third coal dust classifiers, 54 the 4th coal dusts point
From device, 56 the 5th coal dust classifiers, 56 the 6th coal dust classifiers.
Specific embodiment
With reference to the accompanying drawing and example the invention will be described in further detail:
Referring to described in attached drawing 1,2, a kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction, including
Process In A Tangential Firing 1, coal burner 2, pulverized coal channel 3, double inlet and outlet coal mill 4 and coal dust classifier 5；Coal burner 2
Four angular regions of Process In A Tangential Firing 1 are stratified and set on along short transverse, every layer of coal burner 2 is arranged in the same of four angular regions
One height；
Double inlet and outlet coal mill 4 uses double-inlet and double-outlet steel ball coal mill, and each double inlet and outlet coal mill 4 includes the first discharging
Mouthful and the second discharge port, the first discharge port of each double inlet and outlet coal mill 4 pass sequentially through coal dust classifier 5, pulverized coal channel 3 with
The same layer coal burner 2 of 1 four angular regions of Process In A Tangential Firing connects；Second discharge port of each double inlet and outlet coal mill 4 according to
The same layer coal burner 2 of secondary four angular region sustained heights by coal dust classifier 5, pulverized coal channel and Process In A Tangential Firing 1
Connection, and the first discharge port of at least one double inlet and outlet coal mill 4 and the second discharge port 4 respectively with 1 jiao of Process In A Tangential Firing
Short transverse non-conterminous two layers of coal burner 2 in area's connects.
Double inlet and outlet coal mill 4 enters coal dust classifier 5, the coal of fineness qualification under dried medium carrying after grinding coal dust
Powder leaves coal dust classifier 5 and enters pulverized coal channel 3, and breeze airflow enters the coal burner 2 being attached thereto by pulverized coal channel 3
Interior, coal dust is sent into Process In A Tangential Firing 1 by coal burner 2 to burn.
Into it is double go out coal pulverizers 4 include the first double inlet and outlet coal mill 41, the second double inlet and outlet coal mill 42 and third it is double into
Double coal pulverizers 43 out；Coal dust classifier 5 includes the first coal dust classifier 51, the second coal dust classifier 52, third coal dust classifier
53, the 4th coal dust classifier 54, the 5th coal dust classifier 55 and the 6th coal dust classifier 56；Coal burner 2 includes first layer
Coal burner 21, second layer coal burner 22, third layer coal burner 23, the 4th layer of coal burner 24, layer 5
Coal burner 25 and layer 6 coal burner 26.
Embodiment 1
Referring to shown in attached drawing 2,3, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with layer 6 burner 26 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished the 4th layer of burner 24 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 5 burner 25 connects.
A kind of controllable pulverized coal preparation system mill dislocation pulverized coal channel arragement construction of flame kernel in embodiment 1, underload
Operation need to shut down coal pulverizer and input heat in furnace to reduce, when shutting down the first double inlet and outlet coal mill, first layer coal burner
And layer 6 coal burner is closed；Compared with shutting down before coal pulverizer, boiler furnace flame center is not to any one jiao of deflection, fire
Flame centre-height is constant；When shutting down the second double inlet and outlet coal mill or third double inlet and outlet coal mill, second layer coal burner,
4th layer of coal burner or third layer coal burner, layer 5 coal burner are closed, compared with before coal pulverizer is shut down, furnace
Not to any one jiao of deflection, flame kernel height change is smaller at flame center, can significantly improve boiler at low load operation, mill
The stability of flame central position when coal machine start and stop.
Embodiment 2
Referring to shown in attached drawing 1,3, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with third layer burner 23 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 5 burner 25 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 3
Referring to shown in attached drawing 1,3, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 5 burner 25 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 4
Referring to shown in attached drawing 1,3, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 6 burner 26 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 5 burner 25 connects.
Embodiment 5
Referring to shown in attached drawing 1,3, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with layer 5 burner 25 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished the 4th layer of burner 24 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 6
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with second layer burner 22 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with third layer burner 23 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 6 burner 26 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 5 burner 25 connects.
Embodiment 7
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with second layer burner 22 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with third layer burner 23 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 5 burner 25 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 8
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with third layer burner 23 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished the 4th layer of burner 24 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with layer 5 burner 25 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 9
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with third layer burner 23 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 6 burner 26 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 5 burner 25 connects.
Embodiment 10
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished third layer burner 23 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with layer 5 burner 25 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 11
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with layer 5 burner 25 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished third layer burner 23 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with the 4th layer of burner 24 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 6 burner 26 connects.
Embodiment 12
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with layer 5 burner 25 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 6 burner 26 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other 4th layer of burner 24 connection.
Embodiment 13
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with layer 6 burner 26 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished the 4th layer of burner 24 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other layer 5 burner 25 connects.
Embodiment 14
Referring to shown in attached drawing 1,4, the first discharging port A 1 and the first coal dust classifier 51 of the first double inlet and outlet coal mill 41
Feed inlet connection, the discharge port of the first coal dust classifier 51 connect with first layer burner 21 respectively by pulverized coal channel 3；The
Second discharging port A 2 of one double inlet and outlet coal mill 41 is connect with the feed inlet of the second coal dust classifier 52, the second coal dust classifier
52 discharge port is connect with layer 6 burner 26 respectively by pulverized coal channel 3；
First discharge port B1 of the second double inlet and outlet coal mill 42 is connect with the feed inlet of third coal dust classifier 53, third
The discharge port of coal dust classifier 53 is connect with second layer burner 22 respectively by pulverized coal channel 3；Second double inlet and outlet coal mill
42 the second discharge port B2 is connect with the feed inlet of the 4th coal dust classifier 44, and the discharge port of the 4th coal dust classifier 44 passes through coal
Powder pipeline 3 is distinguished layer 5 burner 25 and is connected；
First discharge port C1 of third double inlet and outlet coal mill 43 is connect with the feed inlet of the 5th coal dust classifier 55, and the 5th
The discharge port of coal dust classifier 55 is connect with third layer burner 23 respectively by pulverized coal channel 3；Third double inlet and outlet coal mill
43 the second discharge port C2 is connect with the feed inlet of the 6th coal dust classifier 56, and the discharge port 56 of the 6th coal dust classifier is by dividing
Other 4th layer of burner 24 connection.
In 1-5 of the embodiment of the present invention two discharge ports of any one double inlet and outlet coal mill respectively with tangential boiler angular region
Non-conterminous two layers of coal burner connection of short transverse, any number of units double inlet and outlet coal mill combination fortune in embodiment 1-5
When row, boiler furnace flame is unbiased and flame kernel absolute altitude is basically unchanged, and is suitable for the flexibility scheduling of fast lifting load
It is required that.
Have in 6-14 of the embodiment of the present invention two discharge ports of one or more double inlet and outlet coal mill respectively with cut
Non-conterminous two layers of coal burner connection of circle boiler angular region short transverse, any number of units goes with each other all the time mill in embodiment 6-14
When coal machine combined running, boiler furnace flame is unbiased and flame kernel absolute altitude is basically unchanged, and is suitable for fast lifting load
Flexibility scheduling requirement.
Above-described embodiment is only to use application in three double inlet and outlet coal mills and Process In A Tangential Firing, it is all using with
The non-conterminous arrangement of two layers of coal burner that two discharge ports of at least one double inlet and outlet coal mill are separately connected,
Belong to the range that the present invention is protected；Process In A Tangential Firing is wherein replaced with into six-corner tangential boiler or octagonal tangential boiler or is adopted
The range that the present invention is protected also is belonged to three or more double inlet and outlet coal mills.
Claims (6)
1. a kind of pulverized coal preparation system that flame kernel is controllable mill dislocation pulverized coal channel arragement construction, which is characterized in that including several
The angular region of double inlet and outlet coal mill (4), pulverized coal channel (3) and tangential boiler, tangential boiler is equipped with coal dust along short transverse layering
Burner (2)；Every double inlet and outlet coal mill (4) is equipped with the first discharge port and the second discharge port, and the first discharge port passes through coal dust
Pipeline (3) is connect with the same layer coal burner (2) of tangential boiler angular region sustained height, and the second discharge port passes through pulverized coal channel
(3) it is connect with the same layer coal burner (3) of tangential boiler angular region sustained height；An and at least double inlet and outlet coal mill (4)
The first discharge port and the second discharge port by pulverized coal channel (3) respectively with non-conterminous two layers of tangential boiler angular region short transverse
Coal burner (2) connection.
2. a kind of controllable pulverized coal preparation system mill dislocation pulverized coal channel arragement construction of flame kernel according to claim 1,
It is characterized in that, coal dust classifier (5) is provided between double inlet and outlet coal mill (4) and pulverized coal channel (3).
3. a kind of controllable pulverized coal preparation system mill dislocation pulverized coal channel arragement construction of flame kernel according to claim 1,
It is characterized in that, tangential boiler is using any one in Process In A Tangential Firing (1), six-corner tangential boiler or octagonal tangential boiler.
4. a kind of controllable pulverized coal preparation system mill dislocation pulverized coal channel arragement construction of flame kernel according to claim 1,
It is characterized in that, double inlet and outlet coal mill (4) uses double-inlet and double-outlet steel ball coal mill.
5. a kind of controllable pulverized coal preparation system mill dislocation pulverized coal channel arragement construction of flame kernel according to claim 1,
It is characterized in that, the coal pulverizer (4) to go with each other all the time is three, and the angular region of tangential boiler is provided with six layers of coal dust firing along short transverse
Device (2).
6. a kind of controllable pulverized coal preparation system mill dislocation pulverized coal channel arragement construction of flame kernel according to claim 1,
Be characterized in that, the first discharge port and the second discharge port of each double inlet and outlet coal mill (4) by pulverized coal channel (3) respectively with
Non-conterminous two layers of coal burner (2) connection of tangential boiler angular region short transverse.
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