CN105112586B - A kind of coal powder injection apparatus of blast furnace - Google Patents
A kind of coal powder injection apparatus of blast furnace Download PDFInfo
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- CN105112586B CN105112586B CN201510462657.4A CN201510462657A CN105112586B CN 105112586 B CN105112586 B CN 105112586B CN 201510462657 A CN201510462657 A CN 201510462657A CN 105112586 B CN105112586 B CN 105112586B
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- 239000003245 coal Substances 0.000 title claims abstract description 279
- 239000000843 powder Substances 0.000 title claims abstract description 104
- 238000002347 injection Methods 0.000 title claims abstract description 59
- 239000007924 injection Substances 0.000 title claims abstract description 59
- 239000002817 coal dust Substances 0.000 claims abstract description 54
- 238000007664 blowing Methods 0.000 claims description 29
- 238000010926 purge Methods 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Abstract
The embodiment of the present invention discloses a kind of coal powder injection apparatus of blast furnace, including：Pulverized coal injection is responsible for；Pulverized coal distributor, supervisor is connected with the pulverized coal injection；Coal jetting branch, it is connected by export distributor coal valve with the pulverized coal distributor, and is connected by the blast furnace coal valve and coal powder lance valve of concatenation with coal powder lance, the coal powder lance is connected with blast-furnace tuyere；Blast furnace unimpeded unit, it is connected by blast furnace unimpeded valve with the coal jetting branch, the position of the blast furnace unimpeded valve and coal jetting branch connection is between the blast furnace coal valve and the coal powder lance valve；The blast furnace blockage-eliminating device includes blast furnace unimpeded endless tube and blast furnace unimpeded powder hopper；When the coal powder lance blocks, close the blast furnace coal valve and open the blast furnace unimpeded valve, the coal dust in the coal powder lance is released by the hot-blast pressure that the blast-furnace tuyere provides, and the coal dust is collected by the blast furnace unimpeded endless tube and the blast furnace unimpeded powder hopper.
Description
Technical field
The present invention relates to field of smelting, more particularly to a kind of coal powder injection apparatus of blast furnace.
Background technology
Blast furnace technology is the main method of current production steel, and the steel produced using blast furnace technology accounts for the world
More than the 95% of iron steel total output, and coal injection system is the visual plant in blast furnace technology.At present, in the production of blast furnace
During, generally by the mode pulverized coal conveying of pipeline aerating body into blast furnace.Specifically, Fig. 1 is refer to, Fig. 1 is existing
Have the schematic diagram of coal powder injection apparatus of blast furnace in technology, as shown in figure 1, in the prior art coal powder injection apparatus of blast furnace include coal powder injection main pipe 101,
Pulverized coal distributor 102, coal jetting branch 103, blast furnace coal valve 1031 and coal powder lance valve 1032 are provided with coal jetting branch 103, is being sprayed
Coal branch pipe end is provided with coal powder lance 1033, and coal powder lance 1033 sprays into coal dust in the cupola well of blast furnace by blast-furnace tuyere 11.
Improved by Coal Injection Amount into BF or quality of pc variation (such as granularity, moisture increase etc.) factor is influenceed, pipeline
Phenomena such as gas flow rate reduction, coal dust sedimentation inside occurs, so as to cause coal jetting branch chute blockage, as shown in Fig. 2 Fig. 2 is existing
Schematic diagram in technology during coal spraying pipeline chute blockage, chute blockage region upstream are such as arranged not in time to the gradient of the inclined degree increase in downstream
Stifled, in coal jetting branch 103 in the presence of the positive pressure of gas, pipeline will be more stifled more dead, and can cause other in spray
Coal jetting branch load increases, and in turn results in vicious circle.
It during unimpeded is carried out to coal jetting branch, can first confirm whether coal powder lance is unimpeded, specifically, can first close high
Stove coal valve, blast furnace unimpeded valve and coal powder lance valve are opened, are released the coal dust blocked in coal powder lance by the hot-blast pressure in blast furnace,
Simultaneously because pulverized coal particle is smaller, so coal dust can be scattered to the table surrounding of blast furnace, the work of the table surrounding of blast furnace is influenceed
Environment and coal dust is caused to waste.
Therefore, the table surrounding that coal dust be present when confirming whether coal powder lance is unimpeded in the prior art can be scattered to blast furnace is led
Cause the technical problem for influenceing the working environment of blast furnace and causing coal dust to waste.
The content of the invention
The embodiment of the present invention is by providing a kind of coal powder injection apparatus of blast furnace, to solve to be in confirmation coal powder lance in the prior art
The table surrounding that existing coal dust can be scattered to blast furnace when no unimpeded cause the working environment for influenceing the table surrounding of blast furnace and
The technical problem for causing coal dust to waste.
The embodiments of the invention provide a kind of coal powder injection apparatus of blast furnace, including：
Pulverized coal injection is responsible for；
Pulverized coal distributor, supervisor is connected with the pulverized coal injection；
Coal jetting branch, it is connected by export distributor coal valve with the pulverized coal distributor, and the blast furnace coal valve for passing through concatenation
It is connected with coal powder lance valve with coal powder lance, the coal powder lance is connected with blast-furnace tuyere；
Blast furnace unimpeded unit, it is connected by blast furnace unimpeded valve with the coal jetting branch, the blast furnace unimpeded valve and the spray
The position of coal branch pipe connection is between the blast furnace coal valve and the coal powder lance valve；The blast furnace unimpeded unit includes blast furnace unimpeded
Endless tube and blast furnace unimpeded powder hopper；
When the coal powder lance blocks, close the blast furnace coal valve and open the blast furnace unimpeded valve, pass through the blast furnace
The hot-blast pressure that air port provides releases the coal dust in the coal powder lance, and passes through the blast furnace unimpeded endless tube and the high fire grate
Stifled powder hopper collects the coal dust.
Alternatively, the blast furnace unimpeded unit also includes：
Blast furnace unimpeded endless tube blow down valve, is connected with the blast furnace unimpeded endless tube；
It is described the coal dust is collected by the blast furnace unimpeded endless tube and the blast furnace unimpeded powder hopper after, described in closing
Blast furnace unimpeded valve simultaneously opens the blast furnace unimpeded endless tube blow down valve, and the blast furnace unimpeded endless tube is purged by purging wind.
Alternatively, described device also includes：
Pulverized coal injection is responsible for terminal pressure detector, be arranged at pulverized coal injection supervisor and the pulverized coal distributor it
Between；
Blast furnace back-blowing unit, it is connected by reverse blow valve with the coal jetting branch, the blast furnace back-blowing unit and institute
The connected position of coal jetting branch is stated between the pulverized coal distributor and the blast furnace coal valve；The blast furnace back-blowing unit includes
Back-blowing endless tube is responsible for back-blowing；
When the coal jetting branch blocks, the blast furnace coal valve is closed, and by the blast furnace back-blowing unit to described
Coal jetting branch carries out blowback and swept, and when pulverized coal injection supervisor's terminal pressure detector detects pressure rise, closes institute
State reverse blow valve.
Alternatively, described device also includes：
Export distributor coal valve, is arranged between the pulverized coal distributor and the reverse blow valve；
Coal jetting branch unimpeded unit, it is connected by branch pipe unimpeded valve with the coal jetting branch, the branch pipe unimpeded valve and institute
The connected position of coal jetting branch is stated between the export distributor coal valve and the reverse blow valve；The coal jetting branch unimpeded list
Member includes coal jetting branch unimpeded endless tube and deslagging pond；
When the coal jetting branch blocks, the export distributor coal valve, the blast furnace coal valve and the coal powder lance are closed
Valve, and the branch pipe unimpeded valve and the reverse blow valve are opened, the coal jetting branch is entered by the blast furnace back-blowing unit
Row blowback is swept, and closes the reverse blow valve when there is coal dust discharge in the deslagging pond.
Alternatively, the coal jetting branch unimpeded unit also includes：
Coal jetting branch unimpeded endless tube blow down valve, is connected with the coal jetting branch unimpeded endless tube；
After closing the reverse blow valve when there is coal dust discharge in the deslagging pond, the branch pipe unimpeded valve is closed, and beat
The coal jetting branch unimpeded endless tube blow down valve is driven, the coal jetting branch unimpeded endless tube is purged.
Alternatively, described device also includes：
Wind distribution pipe is purged, is connected by purging non-return valve with the coal jetting branch, the purging non-return valve and the spray
The connected position of coal branch pipe is between the export distributor coal valve and the branch pipe unimpeded valve.
The one or more technical schemes provided in the embodiment of the present invention, have at least the following technical effects or advantages：
1st, as a result of the technical scheme for the blast furnace unimpeded unit being connected by blast furnace unimpeded valve with coal jetting branch, so
When coal powder lance blocks, close blast furnace coal valve and open blast furnace unimpeded valve, i.e., the hot blast that can be provided by blast-furnace tuyere
Pressure releases the coal dust in coal powder lance, and collects quilt by the blast furnace unimpeded endless tube in blast furnace unimpeded unit and blast furnace powder hopper
The coal dust released from coal powder lance, the defects of coal dust can be scattered in the table surrounding of blast furnace is avoided, so as to ensure that blast furnace
The working environment of table surrounding is unaffected, while the coal dust that blast furnace unimpeded unit is collected can also reuse, and avoid coal
Powder wastes, and saves production cost；
2nd, coal powder injection apparatus of blast furnace provided in an embodiment of the present invention improves the unimpeded operating efficiency of coal jetting branch, ensure that coal powder injection
Branch pipe can add Coal Injection Amount into BF and reduce coke ratio, while can rapidly eliminate peace uniformly and stably to pulverized coal injection
Full hidden danger, and personal safety and the health of safeguard work personnel.
Brief description of the drawings
Fig. 1 is the schematic diagram of coal powder injection apparatus of blast furnace in the prior art；
Fig. 2 be in the prior art coal spraying pipeline chute blockage when schematic diagram；
Fig. 3 is the schematic diagram of coal powder injection apparatus of blast furnace provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is by providing a kind of coal powder injection apparatus of blast furnace, to solve to be in confirmation coal powder lance in the prior art
The table surrounding that existing coal dust can be scattered to blast furnace when no unimpeded cause the working environment for influenceing the table surrounding of blast furnace and
The technical problem for causing coal dust to waste.
Technical scheme in the embodiment of the present invention is in order to solve the above technical problems, general thought is as follows：
The embodiments of the invention provide a kind of coal powder injection apparatus of blast furnace, including：
Pulverized coal injection is responsible for；
Pulverized coal distributor, supervisor is connected with the pulverized coal injection；
Coal jetting branch, it is connected by export distributor coal valve with the pulverized coal distributor, and the blast furnace coal valve for passing through concatenation
It is connected with coal powder lance valve with coal powder lance, the coal powder lance is connected with blast-furnace tuyere；
Blast furnace unimpeded unit, it is connected by blast furnace unimpeded valve with the coal jetting branch, the blast furnace unimpeded valve and the spray
The position of coal branch pipe connection is between the blast furnace coal valve and the coal powder lance valve；The blast furnace unimpeded unit includes blast furnace unimpeded
Endless tube and blast furnace unimpeded powder hopper；
When the coal powder lance blocks, close the blast furnace coal valve and open the blast furnace unimpeded valve, pass through the blast furnace
The hot-blast pressure that air port provides releases the coal dust in the coal powder lance, and passes through the blast furnace unimpeded endless tube and the high fire grate
Stifled powder hopper collects the coal dust.
As can be seen that the technical side as a result of the blast furnace unimpeded unit being connected by blast furnace unimpeded valve with coal jetting branch
Case, so when coal powder lance blocks, close blast furnace coal valve and open blast furnace unimpeded valve, i.e., can be provided by blast-furnace tuyere
Hot-blast pressure the coal dust in coal powder lance is released, and pass through the blast furnace unimpeded endless tube and blast furnace powder hopper in blast furnace unimpeded unit
The coal dust released from coal powder lance is collected, the defects of coal dust can be scattered in the table surrounding of blast furnace is avoided, so as to ensure that
The working environment of the table surrounding of blast furnace is unaffected, while the coal dust that blast furnace unimpeded unit is collected can also reuse, and keep away
Exempt from coal dust waste, save production cost.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
Fig. 3 is refer to, Fig. 3 is the schematic diagram of coal powder injection apparatus of blast furnace provided in an embodiment of the present invention, as shown in figure 3, the height
Stove coal injection device includes：
Pulverized coal injection supervisor 301；
Pulverized coal distributor 302, it is connected with pulverized coal injection supervisor 301；
Coal jetting branch 303, it is connected by export distributor coal valve 3021 with pulverized coal distributor 302, and the height for passing through concatenation
Stove coal valve 3031 and coal powder lance valve 3032 are connected with coal powder lance 3033, and coal powder lance 3033 is connected with blast-furnace tuyere 311；
Blast furnace unimpeded unit 304, be connected by blast furnace unimpeded valve 3041 with coal jetting branch 303, blast furnace unimpeded valve 3041 with
The position that coal jetting branch 303 connects is between blast furnace coal valve 3031 and coal powder lance valve 3032；Blast furnace unimpeded unit 304 includes blast furnace
Unimpeded endless tube 3042 and blast furnace unimpeded powder hopper 3043；
When coal powder lance 3033 blocks, close blast furnace coal valve 3031 and open blast furnace unimpeded valve 3041, pass through blast-furnace tuyere
311 hot-blast pressures provided release the coal dust in coal powder lance 3033, and pass through blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder
Bucket 3043 collects coal dust.
In specific implementation process, blast furnace unimpeded unit 304 can also include connection blast furnace unimpeded valve 3041, blast furnace unimpeded
Endless tube 3042 and blast furnace unimpeded powder hopper 3043 connect hose connector soon, and collect blast furnace unimpeded cloth bag of coal dust etc., herein
Just repeat no more.
In specific implementation process, please continue to refer to Fig. 3, as shown in figure 3, coal powder injection apparatus of blast furnace also includes：
Purge wind distribution pipe 307, be connected by purging non-return valve 3071 with coal jetting branch 303, purge non-return valve 3071 and
The connected position of coal jetting branch 303 is between export distributor coal valve 3021 and coal jetting branch unimpeded valve 3061；In purging check
After valve 3071 is opened, purging wind distribution pipe 307 can provide the gas pressure of forward direction into coal jetting branch 303；
After coal dust is collected above by blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder hopper 3043, to avoid distributor
The coal dust remained between outlet coal valve 3021 and coal powder lance valve 3032 is not collected totally, can also close coal powder lance valve 3032,
Blast furnace coal valve 3031 and blast furnace unimpeded valve 3041 are opened, opens purging non-return valve 3071, by purging the offer of wind distribution pipe 307
Purge wind the coal dust remained between export distributor coal valve 3021 and coal powder lance valve 3032 is pushed into blast furnace unimpeded unit 304.
In specific implementation process, please continue to refer to Fig. 3, as shown in figure 3, blast furnace unimpeded unit 304 also includes：
Blast furnace unimpeded endless tube blow down valve 30421, is connected with blast furnace unimpeded endless tube 3042；
After coal dust is collected by blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder hopper 3043, to ensure blast furnace blocking exhausting ring
Pipe 3042 it is unimpeded, close blast furnace unimpeded valve 3041 and simultaneously open blast furnace unimpeded endless tube blow down valve 30421, by purging wind to blast furnace
Unimpeded endless tube 3042 is purged so that the coal dust of residual is purged into blast furnace unimpeded powder hopper in blast furnace unimpeded endless tube 3042
In 3043, it is easy to be continuing with next time.
In specific implementation process, please continue to refer to Fig. 3, as shown in figure 3, coal powder injection apparatus of blast furnace also includes：
Pulverized coal injection supervisor's terminal pressure detector 3011, it is arranged at pulverized coal injection supervisor 301 and enters pulverized coal distributor 302
Before；
Blast furnace back-blowing unit 305, it is connected by reverse blow valve 3051 with coal jetting branch 303, blast furnace back-blowing unit 305
With the position that coal jetting branch 303 is connected between pulverized coal distributor 302 and blast furnace coal valve 3031；Blast furnace back-blowing unit 305 wraps
Include back-blowing endless tube 3052 and back-blowing supervisor 3053；In specific implementation process, blast furnace back-blowing unit 305 can provide
1.5MPa gas pressure；
When coal jetting branch 303 blocks, blast furnace coal valve 3031 is closed, and by blast furnace back-blowing unit 305 to pci extension
Pipe 303 carries out reverse blow, and when pulverized coal injection supervisor's terminal pressure detector 3011 detects pressure rise, that is, shows to spray
Coal branch pipe 303 blown it is logical, close reverse blow valve 3051, avoid causing hypertonia in pulverized coal distributor 302, then influence
Transmission of the coal powder injection main pipe 301 to coal dust.
Please continue to refer to Fig. 2, as shown in Fig. 2 the gradient of the chute blockage region upstream to the inclined degree increase in downstream, so logical
When crossing blast furnace back-blowing unit 305 to the progress reverse blow unimpeded of coal jetting branch 303, simultaneously because blast furnace back-blowing unit 305
Continuously back-blowing can be provided, it is logical so as to be easy to blow chute blockage region heap tip, then realize and blow logical whole coal powder injection
The purpose of branch pipe 303, is of coursed, as it was previously stated, detecting pressure rise in pulverized coal injection supervisor's terminal pressure detector 3011
When, it is necessary to immediately close reverse blow valve 3051.
In specific implementation process, please continue to refer to Fig. 3, as shown in figure 3, coal powder injection apparatus of blast furnace also includes：
Export distributor coal valve 3021, is arranged between pulverized coal distributor 302 and reverse blow valve 3051；
Coal jetting branch unimpeded unit 306, it is connected by coal jetting branch unimpeded valve 3061 with coal jetting branch 303, coal jetting branch
Unimpeded valve 3061 is with the position that coal jetting branch 303 is connected between export distributor coal valve 3021 and reverse blow valve 3051；Coal powder injection
Branch pipe unimpeded unit 306 includes coal jetting branch unimpeded endless tube 3062 and deslagging pond 3063；
When coal jetting branch 303 blocks, export distributor coal valve 3021 and purging non-return valve 3071, blast furnace coal valve are closed
3031 and coal powder lance valve 3032, and coal jetting branch unimpeded valve 3061 and reverse blow valve 3051 are opened, pass through blast furnace back-blowing unit
305 pairs of coal jetting branch 303 carry out blowback and swept, it can be seen that because blast furnace back-blowing unit 305 is connected with deslagging pond 3063, institute
To cause the back-blowing that blast furnace back-blowing unit 305 provides that there is bigger purging power in coal jetting branch 303, so as to be easier
The coal jetting branch 303 of pass blocking plug is blown, and it is logical when there is coal dust discharge in deslagging pond 3063 to show that coal jetting branch 303 is blown, and closes
Close reverse blow valve 3051.
In specific implementation process, please continue to refer to Fig. 3, as shown in figure 3, coal jetting branch unimpeded unit 306 also includes：
Coal jetting branch unimpeded endless tube blow down valve 30621, is connected with coal jetting branch unimpeded endless tube 3062；
Closed when there is coal dust discharge in deslagging pond 3063 after reverse blow valve 3051, close coal jetting branch unimpeded valve 3061,
And coal jetting branch unimpeded endless tube blow down valve 30621 is opened, coal jetting branch unimpeded endless tube 3062 is purged.
Of course, in specific implementation process, can be set at each position of coal powder injection apparatus of blast furnace according to actual conditions
Manually-operated gate or automatic valve etc., to meet the needs of actual conditions, just repeat no more herein.
In actual applications, the coal dust collected to a coal powder injection apparatus of blast furnace provided in an embodiment of the present invention is weighed,
Coal dust 240kg can be collected for every eight hours, calculated with daily 3 classes, annual 360 days, the height provided in 1 year by the present embodiment
The coal dust amount that stove coal injection device is collected reaches 240*3*360/1000=259.2 (t), by 796.40 yuan of in July, 2014 coal dust cost/
T is calculated, then 1 year production cost that can be saved is 259.2*796.4/10000=20.64 (ten thousand yuan).So, it is if each high
Stove collects coal dust using coal powder injection apparatus of blast furnace provided in an embodiment of the present invention, then the production cost that can be saved is more,
This is just repeated no more.
By above-mentioned steps as can be seen that coal powder injection apparatus of blast furnace provided in an embodiment of the present invention improves the row of coal jetting branch
Stifled operating efficiency, it ensure that coal jetting branch can add Coal Injection Amount into BF and reduce coke ratio uniformly and stably to pulverized coal injection,
Can rapidly it eliminate safe hidden trouble simultaneously, and personal safety and the health of safeguard work personnel.
Technical scheme in the embodiments of the present invention, at least has the following technical effect that or advantage：
1st, as a result of the technical scheme for the blast furnace unimpeded unit being connected by blast furnace unimpeded valve with coal jetting branch, so
When coal powder lance blocks, close blast-furnace coal powder and open blast furnace unimpeded valve, i.e., the hot blast that can be provided by blast-furnace tuyere
Coal dust in pressure drop coal powder lance is released, and collects quilt by the blast furnace unimpeded endless tube in blast furnace unimpeded unit and blast furnace powder hopper
The coal dust released from coal powder lance, the defects of coal dust can be scattered in the table surrounding of blast furnace is avoided, so as to ensure that blast furnace
The working environment of table surrounding is unaffected, while the coal dust that blast furnace unimpeded unit is collected can also reuse, and avoid coal
Powder wastes, and saves production cost；
2nd, coal powder injection apparatus of blast furnace provided in an embodiment of the present invention improves the unimpeded operating efficiency of coal jetting branch, ensure that spray
Coal branch pipe can add Coal Injection Amount into BF and reduce coke ratio, while can rapidly eliminate uniformly and stably to pulverized coal injection
Potential safety hazard, and personal safety and the health of safeguard work personnel.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (5)
- A kind of 1. coal powder injection apparatus of blast furnace, it is characterised in that including：Pulverized coal injection is responsible for；Pulverized coal distributor, supervisor is connected with the pulverized coal injection；Coal jetting branch, it is connected by export distributor coal valve with the pulverized coal distributor, and passes through the blast furnace coal valve of concatenation and spray Coal rifle valve is connected with coal powder lance, and the coal powder lance is connected with blast-furnace tuyere；Blast furnace unimpeded unit, it is connected by blast furnace unimpeded valve with the coal jetting branch, the blast furnace unimpeded valve and the pci extension The position of pipe connection is between the blast furnace coal valve and the coal powder lance valve；The blast furnace unimpeded unit includes blast furnace unimpeded endless tube With blast furnace unimpeded powder hopper；Blast furnace back-blowing unit, it is connected by reverse blow valve with the coal jetting branch；Export distributor coal valve, is arranged between the pulverized coal distributor and the reverse blow valve；Coal jetting branch unimpeded unit, it is connected by branch pipe unimpeded valve with the coal jetting branch；Wind distribution pipe is purged, is connected by purging non-return valve with the coal jetting branch, the purging non-return valve and the pci extension The connected position of pipe is between the export distributor coal valve and the branch pipe unimpeded valve；When the coal powder lance blocks, close the blast furnace coal valve and open the blast furnace unimpeded valve, pass through the blast-furnace tuyere The hot-blast pressure of offer releases the coal dust in the coal powder lance, and passes through the blast furnace unimpeded endless tube and the blast furnace unimpeded powder Bucket collects the coal dust.
- 2. device as claimed in claim 1, it is characterised in that the blast furnace unimpeded unit also includes：Blast furnace unimpeded endless tube blow down valve, is connected with the blast furnace unimpeded endless tube；It is described the coal dust is collected by the blast furnace unimpeded endless tube and the blast furnace unimpeded powder hopper after, close the blast furnace Unimpeded valve simultaneously opens the blast furnace unimpeded endless tube blow down valve, and the blast furnace unimpeded endless tube is purged by purging wind.
- 3. device as claimed in claim 1, it is characterised in that described device also includes：Pulverized coal injection is responsible for terminal pressure detector, is arranged between the pulverized coal injection supervisor and the pulverized coal distributor；The blast furnace back-blowing unit is with the position that the coal jetting branch is connected in the pulverized coal distributor and the blast furnace coal valve Between；The blast furnace back-blowing unit includes back-blowing endless tube to be responsible for back-blowing；When the coal jetting branch blocks, the blast furnace coal valve is closed, and by the blast furnace back-blowing unit to the coal powder injection Branch pipe carries out blowback and swept, and when pulverized coal injection supervisor's terminal pressure detector detects pressure rise, closes described anti- Blowing valve.
- 4. device as claimed in claim 3, it is characterised in that described device also includes：The branch pipe unimpeded valve is with the position that the coal jetting branch is connected in the export distributor coal valve and the reverse blow valve Between；The coal jetting branch unimpeded unit includes coal jetting branch unimpeded endless tube and deslagging pond；When the coal jetting branch blocks, the export distributor coal valve, the blast furnace coal valve and the coal powder lance valve are closed, and The branch pipe unimpeded valve and the reverse blow valve are opened, blowback is carried out to the coal jetting branch by the blast furnace back-blowing unit Sweep, and the reverse blow valve is closed when there is coal dust discharge in the deslagging pond.
- 5. device as claimed in claim 4, it is characterised in that the coal jetting branch unimpeded unit also includes：Coal jetting branch unimpeded endless tube blow down valve, is connected with the coal jetting branch unimpeded endless tube；After closing the reverse blow valve when there is coal dust discharge in the deslagging pond, the branch pipe unimpeded valve is closed, and open institute Coal jetting branch unimpeded endless tube blow down valve is stated, the coal jetting branch unimpeded endless tube is purged.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462657.4A CN105112586B (en) | 2015-07-31 | 2015-07-31 | A kind of coal powder injection apparatus of blast furnace |
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|---|---|---|---|
| CN201510462657.4A CN105112586B (en) | 2015-07-31 | 2015-07-31 | A kind of coal powder injection apparatus of blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN105112586A CN105112586A (en) | 2015-12-02 |
| CN105112586B true CN105112586B (en) | 2017-12-05 |
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| CN201510462657.4A Expired - Fee Related CN105112586B (en) | 2015-07-31 | 2015-07-31 | A kind of coal powder injection apparatus of blast furnace |
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| CN109811099A (en) * | 2019-02-18 | 2019-05-28 | 邯郸钢铁集团有限责任公司 | A kind of improved blast furnace divides coal bottle control device and control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2806484Y (en) * | 2005-07-25 | 2006-08-16 | 万德保 | Energy-saving and environmental protection coal injection device for blast furnace |
| CN201217005Y (en) * | 2008-05-15 | 2009-04-08 | 宝山钢铁股份有限公司 | Coal tube dredging apparatus |
| CN202322879U (en) * | 2011-11-02 | 2012-07-11 | 中冶赛迪工程技术股份有限公司 | Blockage clearing structure for pipeline segment from coal spraying dispenser to coal dust spray gun of blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030048811A (en) * | 2001-12-13 | 2003-06-25 | 주식회사 포스코 | A method for penetrating pci line of blast furnace |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2806484Y (en) * | 2005-07-25 | 2006-08-16 | 万德保 | Energy-saving and environmental protection coal injection device for blast furnace |
| CN201217005Y (en) * | 2008-05-15 | 2009-04-08 | 宝山钢铁股份有限公司 | Coal tube dredging apparatus |
| CN202322879U (en) * | 2011-11-02 | 2012-07-11 | 中冶赛迪工程技术股份有限公司 | Blockage clearing structure for pipeline segment from coal spraying dispenser to coal dust spray gun of blast furnace |
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| CN105112586A (en) | 2015-12-02 |
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