CN105112586A - Coal injection device of blast furnace - Google Patents
Coal injection device of blast furnace Download PDFInfo
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- CN105112586A CN105112586A CN201510462657.4A CN201510462657A CN105112586A CN 105112586 A CN105112586 A CN 105112586A CN 201510462657 A CN201510462657 A CN 201510462657A CN 105112586 A CN105112586 A CN 105112586A
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Abstract
The embodiment of the invention discloses a coal injection device of a blast furnace. The coal injection device comprises a blast furnace coal injection main pipe, a coal dust distributor, a coal injection branch pipe and a blast furnace blocking removal unit. The coal dust distributor is connected with the blast furnace coal injection main pipe. The coal injection branch pipe is connected with the coal dust distributor through an outlet coal valve of the distributor, and connected with a coal injection gun through a blast furnace coal valve and a coal injection gun valve which are connected in series, and the coal injection gun is connected with a blast furnace air opening. The blast furnace blocking removal unit is connected with the coal injection branch pipe through a blast furnace blocking removal valve, and the connecting position of the blast furnace blocking removal valve and the coal injection branch pipe is located between the blast furnace coal valve and the coal injection gun valve. The blast furnace blocking removal unit comprises a blast furnace blocking removal ring pipe and a blast furnace blocking removal dust hopper. When the coal injection gun is blocked, the blast furnace coal valve is closed, and the blast furnace blocking removal valve is opened; and coal dust in the coal injection gun is pushed out through hot air pressure provided by the blast furnace air opening, and the coal dust is collected through the blast furnace blocking removal ring pipe and the blast furnace blocking removal dust hopper.
Description
Technical field
The present invention relates to field of smelting, particularly relate to a kind of coal powder injection apparatus of blast furnace.
Background technology
Blast furnace technology is the main method of producing iron and steel at present, and the iron and steel adopting blast furnace technology to produce accounts for more than 95% of World Iron iron and steel ultimate production, and coal injection system is the visual plant in blast furnace technology.At present, in the production process of blast furnace, be generally add the mode pulverized coal conveying of gas in blast furnace by pipeline.Specifically, please refer to Fig. 1, Fig. 1 is the schematic diagram of coal powder injection apparatus of blast furnace in prior art, as shown in Figure 1, in prior art, coal powder injection apparatus of blast furnace comprises coal powder injection main pipe 101, pulverized coal distributor 102, coal jetting branch 103, coal jetting branch 103 is provided with blast furnace coal valve 1031 and coal spouting gun valve 1032, coal jetting branch end is provided with coal spouting gun 1033, coal dust sprays in the cupola well of blast furnace through blast-furnace tuyere 11 by coal spouting gun 1033.
Be subject to the factor impact such as Coal Injection Amount into BF raising or quality of pc variation (as granularity, moisture increase etc.), there will be the phenomenons such as gas flow rate reduction, coal dust sedimentation in pipeline, thus cause coal jetting branch chute blockage, as shown in Figure 2, schematic diagram when Fig. 2 is coal spraying pipeline chute blockage in prior art, chute blockage region upstream to downstream is the gradient that obliquity increases, as unimpeded not in time, in coal jetting branch 103 positive pressure of gas effect under, pipeline will be more stifled more dead, and other can be caused to increase at the coal jetting branch load of spray, and then cause vicious cycle.
Coal jetting branch is being carried out in the process of unimpeded, can first confirm that whether coal spouting gun is unimpeded, particularly, first can close blast furnace coal valve, open blast furnace unimpeded valve and coal spouting gun valve, by the hot-blast pressure in blast furnace, the coal dust blocked in coal spouting gun is released, simultaneously because pulverized coal particle is less, so coal dust can be scattered to the table surrounding of blast furnace, affect the Working environment of the table surrounding of blast furnace and cause coal dust to waste.
Therefore, in prior art confirming that coal spouting gun exists the coal dust table surrounding can be scattered to blast furnace and causes affecting the Working environment of blast furnace and the technical problem causing coal dust to waste time whether unimpeded.
Summary of the invention
The embodiment of the present invention, by providing a kind of coal powder injection apparatus of blast furnace, causes affecting the Working environment of the table surrounding of blast furnace and the technical problem causing coal dust to waste in order to solve the coal dust existed when confirming that whether coal spouting gun is unimpeded in the prior art table surrounding can be scattered to blast furnace.
Embodiments provide a kind of coal powder injection apparatus of blast furnace, comprising:
Pulverized coal injection is responsible for;
Pulverized coal distributor, is responsible for described pulverized coal injection and is connected;
Coal jetting branch, is connected with described pulverized coal distributor by export distributor coal valve, and is connected with coal spouting gun with coal spouting gun valve by the blast furnace coal valve of serial connection, and described coal spouting gun is connected with blast-furnace tuyere;
Blast furnace unimpeded unit, is connected with described coal jetting branch by blast furnace unimpeded valve, and the position that described blast furnace unimpeded valve is connected with described coal jetting branch is between described blast furnace coal valve and described coal spouting gun valve; Described blast furnace unimpeded unit comprises blast furnace unimpeded endless tube and blast furnace unimpeded powder bucket;
When described coal spouting gun blocking, close described blast furnace coal valve and open described blast furnace unimpeded valve, coal dust in described coal spouting gun is released by the hot-blast pressure provided by described blast-furnace tuyere, and collects described coal dust by described blast furnace unimpeded endless tube and described blast furnace unimpeded powder bucket.
Alternatively, described blast furnace unimpeded unit also comprises:
Blast furnace unimpeded endless tube blow down valve, is connected with described blast furnace unimpeded endless tube;
Described collect described coal dust by described blast furnace unimpeded endless tube and described blast furnace unimpeded powder bucket after, closing described blast furnace unimpeded valve and open described blast furnace unimpeded endless tube blow down valve, by purging wind, described blast furnace unimpeded endless tube being purged.
Alternatively, described device also comprises:
Pulverized coal injection supervisor terminal pressure detector, is arranged between described pulverized coal injection supervisor and described pulverized coal distributor;
Blast furnace back-blowing unit, is connected with described coal jetting branch by reverse blow valve, and the position that described blast furnace back-blowing unit is connected with described coal jetting branch is between described pulverized coal distributor and described blast furnace coal valve; Described blast furnace back-blowing unit comprises back-blowing endless tube and back-blowing is responsible for;
When the blocking of described coal jetting branch, close described blast furnace coal valve, and by described blast furnace back-blowing unit, blowback is carried out to described coal jetting branch and sweep, and when described pulverized coal injection supervisor terminal pressure detector detects that pressure raises, close described reverse blow valve.
Alternatively, described device also comprises:
Export distributor coal valve, is arranged between described pulverized coal distributor and described reverse blow valve;
Coal jetting branch unimpeded unit, is connected with described coal jetting branch by arm unimpeded valve, and the position that described arm unimpeded valve is connected with described coal jetting branch is between described export distributor coal valve and described reverse blow valve; Described coal jetting branch unimpeded unit comprises coal jetting branch unimpeded endless tube and deslagging pond;
When described coal jetting branch blocking, close described export distributor coal valve, described blast furnace coal valve and described coal spouting gun valve, and open described arm unimpeded valve and described reverse blow valve, carry out blowback by described blast furnace back-blowing unit to described coal jetting branch to sweep, and close described reverse blow valve when described deslagging pond has coal dust to discharge.
Alternatively, described coal jetting branch unimpeded unit also comprises:
Coal jetting branch unimpeded endless tube blow down valve, is connected with described coal jetting branch unimpeded endless tube;
After closing described reverse blow valve when described deslagging pond has coal dust to discharge, close described arm unimpeded valve, and open described coal jetting branch unimpeded endless tube blow down valve, described coal jetting branch unimpeded endless tube is purged.
Alternatively, described device also comprises:
Purge wind distribution piping, be connected with described coal jetting branch by purging reverse checkvalve, the position that described purging reverse checkvalve is connected with described coal jetting branch is between described export distributor coal valve and described arm unimpeded valve.
The one or more technical schemes provided in the embodiment of the present invention, at least have following technique effect or advantage:
1, owing to have employed the technical scheme of the blast furnace unimpeded unit be connected with coal jetting branch by blast furnace unimpeded valve, so when coal spouting gun blocking, close blast furnace coal valve and open blast furnace unimpeded valve, coal dust in coal spouting gun is released by the hot-blast pressure that namely can be provided by blast-furnace tuyere, and collected by the coal dust released from coal spouting gun by the blast furnace unimpeded endless tube in blast furnace unimpeded unit and blast furnace powder bucket, avoid the defect that coal dust can be scattered in the table surrounding of blast furnace, thus ensure that the Working environment of the table surrounding of blast furnace is unaffected, the coal dust that blast furnace unimpeded unit is collected simultaneously also can utilize again, avoid coal dust waste, save production cost,
2, the coal powder injection apparatus of blast furnace that the embodiment of the present invention provides improves the unimpeded operating efficiency of coal jetting branch, ensure that coal jetting branch can uniformly and stably to pulverized coal injection, add Coal Injection Amount into BF and reduce coke ratio, can eliminate safe hidden trouble rapidly simultaneously, and the personnel safety of safeguard work personnel and health.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of coal powder injection apparatus of blast furnace in prior art;
Schematic diagram when Fig. 2 is coal spraying pipeline chute blockage in prior art;
The schematic diagram of the coal powder injection apparatus of blast furnace that Fig. 3 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention, by providing a kind of coal powder injection apparatus of blast furnace, causes affecting the Working environment of the table surrounding of blast furnace and the technical problem causing coal dust to waste in order to solve the coal dust existed when confirming that whether coal spouting gun is unimpeded in the prior art table surrounding can be scattered to blast furnace.
Technical scheme in the embodiment of the present invention is for solving the problems of the technologies described above, and general thought is as follows:
Embodiments provide a kind of coal powder injection apparatus of blast furnace, comprising:
Pulverized coal injection is responsible for;
Pulverized coal distributor, is responsible for described pulverized coal injection and is connected;
Coal jetting branch, is connected with described pulverized coal distributor by export distributor coal valve, and is connected with coal spouting gun with coal spouting gun valve by the blast furnace coal valve of serial connection, and described coal spouting gun is connected with blast-furnace tuyere;
Blast furnace unimpeded unit, is connected with described coal jetting branch by blast furnace unimpeded valve, and the position that described blast furnace unimpeded valve is connected with described coal jetting branch is between described blast furnace coal valve and described coal spouting gun valve; Described blast furnace unimpeded unit comprises blast furnace unimpeded endless tube and blast furnace unimpeded powder bucket;
When described coal spouting gun blocking, close described blast furnace coal valve and open described blast furnace unimpeded valve, coal dust in described coal spouting gun is released by the hot-blast pressure provided by described blast-furnace tuyere, and collects described coal dust by described blast furnace unimpeded endless tube and described blast furnace unimpeded powder bucket.
Can find out, owing to have employed the technical scheme of the blast furnace unimpeded unit be connected with coal jetting branch by blast furnace unimpeded valve, so when coal spouting gun blocking, close blast furnace coal valve and open blast furnace unimpeded valve, coal dust in coal spouting gun is released by the hot-blast pressure that namely can be provided by blast-furnace tuyere, and collected by the coal dust released from coal spouting gun by the blast furnace unimpeded endless tube in blast furnace unimpeded unit and blast furnace powder bucket, avoid the defect that coal dust can be scattered in the table surrounding of blast furnace, thus ensure that the Working environment of the table surrounding of blast furnace is unaffected, the coal dust that blast furnace unimpeded unit is collected simultaneously also can utilize again, avoid coal dust waste, save production cost.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete embodiment, technique scheme is described in detail.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of the coal powder injection apparatus of blast furnace that the embodiment of the present invention provides, and as shown in Figure 3, this coal powder injection apparatus of blast furnace comprises:
Pulverized coal injection supervisor 301;
Pulverized coal distributor 302, is responsible for 301 with pulverized coal injection and is connected;
Coal jetting branch 303, is connected with pulverized coal distributor 302 by export distributor coal valve 3021, and is connected with coal spouting gun 3033 with coal spouting gun valve 3032 by the blast furnace coal valve 3031 of serial connection, and coal spouting gun 3033 is connected with blast-furnace tuyere 311;
Blast furnace unimpeded unit 304, is connected with coal jetting branch 303 by blast furnace unimpeded valve 3041, and the position that blast furnace unimpeded valve 3041 is connected with coal jetting branch 303 is between blast furnace coal valve 3031 and coal spouting gun valve 3032; Blast furnace unimpeded unit 304 comprises blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder bucket 3043;
When coal spouting gun 3033 blocks, close blast furnace coal valve 3031 and open blast furnace unimpeded valve 3041, coal dust in coal spouting gun 3033 is released by the hot-blast pressure provided by blast-furnace tuyere 311, and collects coal dust by blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder bucket 3043.
In specific implementation process, blast furnace unimpeded unit 304 can also comprise connect blast furnace unimpeded valve 3041, blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder bucket 3043 connect hose connector soon, and collect blast furnace unimpeded cloth bag of coal dust etc., just repeat no more at this.
In specific implementation process, please continue to refer to Fig. 3, as shown in Figure 3, coal powder injection apparatus of blast furnace also comprises:
Purge wind distribution piping 307, be connected with coal jetting branch 303 by purging reverse checkvalve 3071, the position that purging reverse checkvalve 3071 is connected with coal jetting branch 303 is between export distributor coal valve 3021 and coal jetting branch unimpeded valve 3061; After purging reverse checkvalve 3071 is opened, purge the gaseous tension that wind distribution piping 307 can provide forward in coal jetting branch 303;
After collecting coal dust above by blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder bucket 3043, be not collected totally for avoiding coal dust residual between export distributor coal valve 3021 and coal spouting gun valve 3032, coal spouting gun valve 3032 can also be closed, open blast furnace coal valve 3031 and blast furnace unimpeded valve 3041, open and purge reverse checkvalve 3071, coal dust residual between export distributor coal valve 3021 and coal spouting gun valve 3032 pushes in blast furnace unimpeded unit 304 by the purging wind provided by purging wind distribution piping 307.
In specific implementation process, please continue to refer to Fig. 3, as shown in Figure 3, blast furnace unimpeded unit 304 also comprises:
Blast furnace unimpeded endless tube blow down valve 30421, is connected with blast furnace unimpeded endless tube 3042;
After collecting coal dust by blast furnace unimpeded endless tube 3042 and blast furnace unimpeded powder bucket 3043, for ensureing the unimpeded of blast furnace unimpeded endless tube 3042, close blast furnace unimpeded valve 3041 and open blast furnace unimpeded endless tube blow down valve 30421, by purging wind, blast furnace unimpeded endless tube 3042 is purged, coal dust residual in blast furnace unimpeded endless tube 3042 is all purged in blast furnace unimpeded powder bucket 3043, is convenient to continue to use 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 comprises:
Pulverized coal injection supervisor terminal pressure detector 3011, is arranged at before pulverized coal injection supervisor 301 enters pulverized coal distributor 302;
Blast furnace back-blowing unit 305, is connected with coal jetting branch 303 by reverse blow valve 3051, and the position that blast furnace back-blowing unit 305 is connected with coal jetting branch 303 is between pulverized coal distributor 302 and blast furnace coal valve 3031; Blast furnace back-blowing unit 305 comprises back-blowing endless tube 3052 and is responsible for 3053 with back-blowing; In specific implementation process, blast furnace back-blowing unit 305 can provide the gaseous tension of 1.5MPa;
When coal jetting branch 303 blocks, close blast furnace coal valve 3031, and carry out reverse blow by blast furnace back-blowing unit 305 pairs of coal jetting branch 303, and when pulverized coal injection supervisor terminal pressure detector 3011 detects that pressure raises, namely show that coal jetting branch 303 has been blown logical, close reverse blow valve 3051, avoid causing pulverized coal distributor 302 internal pressure too high, then affect the transmission of coal powder injection main pipe 301 pairs of coal dusts.
Please continue to refer to Fig. 2, as shown in Figure 2, chute blockage region upstream to downstream is the gradient that obliquity increases, so when carrying out reverse blow unimpeded by blast furnace back-blowing unit 305 pairs of coal jetting branch 303, simultaneously because blast furnace back-blowing unit 305 can provide continuously back-blowing, thus be easy to heap tip, chute blockage region to blow logical, then the object of blowing logical whole coal jetting branch 303 is realized, of course, as previously mentioned, when pulverized coal injection supervisor terminal pressure detector 3011 detects that pressure raises, need to close reverse blow valve 3051 immediately.
In specific implementation process, please continue to refer to Fig. 3, as shown in Figure 3, coal powder injection apparatus of blast furnace also comprises:
Export distributor coal valve 3021, is arranged between pulverized coal distributor 302 and reverse blow valve 3051;
Coal jetting branch unimpeded unit 306, is connected with coal jetting branch 303 by coal jetting branch unimpeded valve 3061, and the position that coal jetting branch unimpeded valve 3061 is connected with coal jetting branch 303 is between export distributor coal valve 3021 and reverse blow valve 3051; Coal jetting branch unimpeded unit 306 comprises coal jetting branch unimpeded endless tube 3062 and deslagging pond 3063;
When coal jetting branch 303 blocks, close export distributor coal valve 3021 and purge reverse checkvalve 3071, blast furnace coal valve 3031 and coal spouting gun valve 3032, and open coal jetting branch unimpeded valve 3061 and reverse blow valve 3051, carry out blowback by blast furnace back-blowing unit 305 pairs of coal jetting branch 303 to sweep, can find out, because blast furnace back-blowing unit 305 is connected with deslagging pond 3063, so the back-blowing making blast furnace back-blowing unit 305 provide has larger purging power in coal jetting branch 303, thus more easily blow the coal jetting branch 303 of pass blocking plug, and it is logical to show that when deslagging pond 3063 has coal dust to discharge coal jetting branch 303 has been blown, 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 comprises:
Coal jetting branch unimpeded endless tube blow down valve 30621, is connected with coal jetting branch unimpeded endless tube 3062;
After closing reverse blow valve 3051 when deslagging pond 3063 has coal dust to discharge, close coal jetting branch unimpeded valve 3061, and open coal jetting branch unimpeded endless tube blow down valve 30621, coal jetting branch unimpeded endless tube 3062 is purged.
Of course, in specific implementation process, manually-operated gate or automatic valve etc. can be set according to practical situation at each position of coal powder injection apparatus of blast furnace, to meet the needs of practical situation, just repeat no more at this.
In actual applications, the coal dust of the coal powder injection apparatus of blast furnace collection that the embodiment of the present invention provides is weighed, within every 8 hours, coal dust 240kg can be collected, calculate with every day 3 classes, annual 360 days, the coal dust amount that the coal powder injection apparatus of blast furnace provided by the present embodiment in a year is collected reaches 240*3*360/1000=259.2 (t), calculate by July, 2014 coal dust cost 796.40 yuan/t, then the production cost can saved for a year is 259.2*796.4/10000=20.64 (ten thousand yuan).Like this, if the coal powder injection apparatus of blast furnace that each blast furnace all uses the embodiment of the present invention to provide is to collect coal dust, then the production cost can saved is more, has just repeated no more at this.
Can be found out by above-mentioned steps, the coal powder injection apparatus of blast furnace that the embodiment of the present invention provides improves the unimpeded operating efficiency of coal jetting branch, ensure that coal jetting branch can uniformly and stably to pulverized coal injection, add Coal Injection Amount into BF and reduce coke ratio, can eliminate safe hidden trouble rapidly simultaneously, and the personnel safety of safeguard work personnel and health.
Technical scheme in the invention described above embodiment, at least has following technique effect or advantage:
1, owing to have employed the technical scheme of the blast furnace unimpeded unit be connected with coal jetting branch by blast furnace unimpeded valve, so when coal spouting gun blocking, close blast-furnace coal powder and open blast furnace unimpeded valve, the coal dust that the hot-blast pressure that namely can be provided by blast-furnace tuyere is fallen in coal spouting gun is released, and collected by the coal dust released from coal spouting gun by the blast furnace unimpeded endless tube in blast furnace unimpeded unit and blast furnace powder bucket, avoid the defect that coal dust can be scattered in the table surrounding of blast furnace, thus ensure that the Working environment of the table surrounding of blast furnace is unaffected, the coal dust that blast furnace unimpeded unit is collected simultaneously also can utilize again, avoid coal dust waste, save production cost,
2, the coal powder injection apparatus of blast furnace that the embodiment of the present invention provides improves the unimpeded operating efficiency of coal jetting branch, ensure that coal jetting branch can uniformly and stably to pulverized coal injection, add Coal Injection Amount into BF and reduce coke ratio, can eliminate safe hidden trouble rapidly simultaneously, and the personnel safety of safeguard work personnel and health.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a coal powder injection apparatus of blast furnace, is characterized in that, comprising:
Pulverized coal injection is responsible for;
Pulverized coal distributor, is responsible for described pulverized coal injection and is connected;
Coal jetting branch, is connected with described pulverized coal distributor by export distributor coal valve, and is connected with coal spouting gun with coal spouting gun valve by the blast furnace coal valve of serial connection, and described coal spouting gun is connected with blast-furnace tuyere;
Blast furnace unimpeded unit, is connected with described coal jetting branch by blast furnace unimpeded valve, and the position that described blast furnace unimpeded valve is connected with described coal jetting branch is between described blast furnace coal valve and described coal spouting gun valve; Described blast furnace unimpeded unit comprises blast furnace unimpeded endless tube and blast furnace unimpeded powder bucket;
When described coal spouting gun blocking, close described blast furnace coal valve and open described blast furnace unimpeded valve, coal dust in described coal spouting gun is released by the hot-blast pressure provided by described blast-furnace tuyere, and collects described coal dust by described blast furnace unimpeded endless tube and described blast furnace unimpeded powder bucket.
2. device as claimed in claim 1, it is characterized in that, described blast furnace unimpeded unit also comprises:
Blast furnace unimpeded endless tube blow down valve, is connected with described blast furnace unimpeded endless tube;
Described collect described coal dust by described blast furnace unimpeded endless tube and described blast furnace unimpeded powder bucket after, closing described blast furnace unimpeded valve and open described blast furnace unimpeded endless tube blow down valve, by purging wind, described blast furnace unimpeded endless tube being purged.
3. device as claimed in claim 1, it is characterized in that, described device also comprises:
Pulverized coal injection supervisor terminal pressure detector, is arranged between described pulverized coal injection supervisor and described pulverized coal distributor;
Blast furnace back-blowing unit, is connected with described coal jetting branch by reverse blow valve, and the position that described blast furnace back-blowing unit is connected with described coal jetting branch is between described pulverized coal distributor and described blast furnace coal valve; Described blast furnace back-blowing unit comprises back-blowing endless tube and back-blowing is responsible for;
When the blocking of described coal jetting branch, close described blast furnace coal valve, and by described blast furnace back-blowing unit, blowback is carried out to described coal jetting branch and sweep, and when described pulverized coal injection supervisor terminal pressure detector detects that pressure raises, close described reverse blow valve.
4. device as claimed in claim 3, it is characterized in that, described device also comprises:
Export distributor coal valve, is arranged between described pulverized coal distributor and described reverse blow valve;
Coal jetting branch unimpeded unit, is connected with described coal jetting branch by arm unimpeded valve, and the position that described arm unimpeded valve is connected with described coal jetting branch is between described export distributor coal valve and described reverse blow valve; Described coal jetting branch unimpeded unit comprises coal jetting branch unimpeded endless tube and deslagging pond;
When described coal jetting branch blocking, close described export distributor coal valve, described blast furnace coal valve and described coal spouting gun valve, and open described arm unimpeded valve and described reverse blow valve, carry out blowback by described blast furnace back-blowing unit to described coal jetting branch to sweep, and close described reverse blow valve when described deslagging pond has coal dust to discharge.
5. device as claimed in claim 4, it is characterized in that, described coal jetting branch unimpeded unit also comprises:
Coal jetting branch unimpeded endless tube blow down valve, is connected with described coal jetting branch unimpeded endless tube;
After closing described reverse blow valve when described deslagging pond has coal dust to discharge, close described arm unimpeded valve, and open described coal jetting branch unimpeded endless tube blow down valve, described coal jetting branch unimpeded endless tube is purged.
6. device as claimed in claim 4, it is characterized in that, described device also comprises:
Purge wind distribution piping, be connected with described coal jetting branch by purging reverse checkvalve, the position that described purging reverse checkvalve is connected with described coal jetting branch is between described export distributor coal valve and described arm unimpeded valve.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN201510462657.4A CN105112586B (en) | 2015-07-31 | 2015-07-31 | A kind of coal powder injection apparatus of blast furnace |
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| CN105112586B CN105112586B (en) | 2017-12-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| 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 |
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| KR20030048811A (en) * | 2001-12-13 | 2003-06-25 | 주식회사 포스코 | A method for penetrating pci line of blast furnace |
| 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 |
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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 |
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| CN105112586B (en) | 2017-12-05 |
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