CN102277469A - Blast furnace pulverized coal direct injection device with pulverized coal conveying function and process thereof - Google Patents
Blast furnace pulverized coal direct injection device with pulverized coal conveying function and process thereof Download PDFInfo
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- CN102277469A CN102277469A CN2011102178630A CN201110217863A CN102277469A CN 102277469 A CN102277469 A CN 102277469A CN 2011102178630 A CN2011102178630 A CN 2011102178630A CN 201110217863 A CN201110217863 A CN 201110217863A CN 102277469 A CN102277469 A CN 102277469A
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Abstract
The invention discloses a blast furnace pulverized coal direct injection device with a pulverized coal conveying function firstly. The device comprises at least three injection tanks and a header pipe communicated with a blast furnace, wherein the material discharge ports of the injection tanks are communicated with the header pipe through main pipes respectively, and one of the main pipes is provided with a control valve I; and the main pipe with the control valve I is connected with other pulverized coal receiving points through a branch pipe, the branch pipe is provided with a control valve II, and the control valve I is positioned between the connecting position of the main pipe and the branch pipe and the connecting position of the main pipe and the header pipe. The invention also discloses a pulverized coal injection process using the device. In the process provided by the invention, the injection tanks inject pulverized coal into the blast furnace communicated with the material discharge ports of the injection tanks, or convey the pulverized coal to the other pulverized coal receiving points. By switching the open and close states of the control valve I and the control valve II, the injection tanks can only inject pulverized coal into the blast furnace, or one of the injection tanks conveys the pulverized coal to the other pulverized coal receiving points, so that the requirement of re-distributing the pulverized coal is fulfilled.
Description
Technical field
The present invention relates to a kind of device and technology thereof in the metallurgy industry to pulverized coal injection in blast furnace.
Background technology
Along with the widespread use of furnace coal spraying technology and constantly progressive, promoted greatly developing of Iron And Steel Industry, also to alleviate ironmaking simultaneously and produced restriction and the pressure that is subjected to the coking coal resource shortage, coal spraying process has become integral part important in the modern iron-smelting process.
In order to satisfy the actual requirement of each steel mill respectively, the variation more of the development of coal spraying process at present.Because the update time of blast-furnace body equipment and coal powder injection equipment is inconsistent; usually can occur blast furnace through overhaul several times after; coal powder injection equipment just carries out an overhaul; tend to cause original powder process winding-up ability can not satisfy the requirement of newly-built blast furnace blowing amount like this; what therefore, the powder process ability of newly-built blast furnace all can be considered is bigger.When other blast furnace or other arts demand coal dust, just there is the assignment problem once more of coal dust, need flow to other blast furnace or other technology this moment with the coal dust of newly-built blast furnace preparation, makes the powder process amount of full factory and winding-up amount reach balance.
In addition, when a plurality of powder process winding-up series was arranged in the powder process injecting station, certain serial powder process was broken down or when overhauling, is at this moment also needed the coal dust that other is serial to deliver to this series, just can keep the continuous coal powder injection of blast furnace, blows and need not break; Between the powder process injecting station of many blast furnaces, also need realize falling mutually of coal dust, improve the being equipped with property mutually of system, and do not use too many equipment, can save construction cost greatly one time.
At present a lot of coal powder injection researchers is also at all kinds of economy of exploratory development and practical coal spraying process, as the patent No. is that the Chinese patent of CN200820160622.0 discloses the mutual spray apparatus of a kind of blast-furnace coal powder, the coal powder blowing device that comprises at least two blast furnaces, link to each other by pipeline between the coal powder blowing device of a blast furnace and the coal powder blowing device of another blast furnace, pipeline is provided with valve.This patent is a unit with at least two blast furnaces, wherein a blast furnace blowing device series is connected with a series in another blast furnace blowing device, add valve control, configure parameter, opening the connection valve just can jet, though the problem that has realized to a certain extent that therein a coal powder blowing device breaks down or can't jet when overhauling, but, when also can not solve the normal coal injection of blast furnace, do not increasing under any equipment situation, can also need the place of coal dust that the function of coal dust is provided to other.
Therefore, need improve existing coal powder blowing device and technology, it can not only also can be realized when coal powder blowing device breaks down and overhaul blast furnace blowing, and under the situation that does not increase any equipment, can also need the place of coal dust that the function of coal dust is provided to other.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of device of the direct coal injection of blast furnace with the coal dust conveying function and the technology of coal injection thereof, can not only when coal powder blowing device breaks down and overhaul, also can realize pulverized coal injection in blast furnace, and under the situation that does not increase any equipment, can also need the place of coal dust that the function of coal dust is provided to other.
In order to realize above-mentioned technical purpose, the present invention has at first proposed a kind of device of the direct coal injection of blast furnace with the coal dust conveying function, comprise at least three winding-up jars and the house steward who communicates with blast furnace, the discharge port of described winding-up jar communicates with house steward by being responsible for respectively, and a described wherein person in charge is provided with control valve I, this person in charge who is provided with control valve I also links to each other with other coal dust material feeding point by arm, described arm is provided with control valve II, and described control valve I is being responsible for respectively and between arm and house steward's the link position.
Further, also comprise respectively the valve positioner that links to each other with control valve II with control valve I;
Further, the bottom of described winding-up jar is provided with streaming tank, and described discharge port can be positioned at the top of streaming tank, also can be positioned at the bottom of streaming tank.
The invention allows for a kind of technology of utilizing the coal powder blowing device coal injection, this technology is: described winding-up jar can be to the pulverized coal injection in blast furnace that communicates with its discharge port or simultaneously can also be to other coal dust material feeding point pulverized coal conveying that links to each other with its discharge port.
Further, opening controlling valve I and closed control valve II are responsible for the winding-up jar link to each other with control valve I place and communicate with house steward, and all are jetted jar all according to the order of sequence and continuously to pulverized coal injection in blast furnace;
Further, closed control valve I and opening controlling valve II, be responsible for to be blocked between the winding-up jar link to each other and the house steward and to communicate with other coal dust material feeding point with control valve I place, and should winding-up jar to other coal dust material feeding point pulverized coal conveying, all the other are jetted jar according to the order of sequence and continuously to pulverized coal injection in blast furnace;
Further, described two winding-ups that communicate with house steward arbitrarily jar all can be according to the order of sequence and continuously to pulverized coal injection in blast furnace.
Further, but described control valve I and control valve II manual switchover also can be automaticallyed switch.
Further, the medium that adopts in the described breeze blowing process can be a pressurized air, also can be other rare gas element, can also be the mixed gas that pressurized air adds other rare gas element.
Beneficial effect of the present invention is:
1, by a plurality of winding-ups jars being set side by side to pulverized coal injection in blast furnace, the stability of coal powder injection operation is very high, when some winding-up jars break down, this winding-up jar withdraws from the winding-up circulation and carries out Maintenance and Repair, and remaining winding-up jar more than or equal to two continues can not have influence on the normal winding-up of blast furnace to blast furnace according to the order of sequence and coal powder injection continuously, in addition, a plurality of winding-up jars when blast furnace blowing, can reclaim winding-up jar interior part high pressure gas side by side, save operation cost;
2, by one of them winding-up jar is linked to each other with other coal dust material feeding point with arm, need not increase any equipment and under the situation of a construction investment, this coal injection system has possessed the conveying function of coal dust, satisfied the coal dust demand of sub-distribution again, can't have influence on the normal winding-up of blast furnace, and the security that has improved powder process winding-up intersite system greatly, realize the balance of powder process amount and winding-up amount in the full factory scope;
3, improved respectively to jet in the same powder process injecting station and be equipped with mutually property between series, and improved and be equipped with property mutually between many powder process injecting stations.
Description of drawings
Fig. 1 is the structural representation of device embodiment of the direct coal injection of blast furnace of band coal dust conveying function of the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
As shown in Figure 1, structural representation for the device embodiment of the direct coal injection of blast furnace of band coal dust conveying function of the present invention, the device of the coal injection of present embodiment comprises at least three winding-up jars and the house steward 8 who communicates with blast furnace, the coal injection device of present embodiment is provided with three winding-up jars, be respectively winding-up jar 1, winding-up jar 2 and winding-up jar 3, winding-up jar 1, the discharge port of winding-up jars 2 and winding-up jars 3 respectively be responsible for 10, the person in charge 11 links to each other with the person in charge 12, be responsible for 10, the person in charge 11 and the person in charge's 12 the other end communicates with house steward 8, wherein a person in charge 10 is provided with control valve I, this is responsible for 10 and also links to each other with other coal dust material feeding point 4 by arm 9, also be provided with control valve II on the described arm 9, described control valve I is being responsible for 10 respectively and between arm 9 and house steward's 8 the link position.
Preferably, the coal injection device of present embodiment also comprises respectively the valve positioner that links to each other with control valve II6 with control valve I5, can realize the automatic switchover of control valve I5 and control valve II6 open and-shut mode.Further, the bottom of winding-up jar is equipped with streaming tank, discharge port can be adopted as the top discharge mode that discharge port is positioned at streaming tank top, also can adopt the material mouth to be positioned at the bottom discharge mode of streaming tank bottom, all can realize coal dust smoothly from winding-up jar winding-up come out, as shown in the figure, the bottom of the jar 1 of jetting, jet jar 2 and winding-up jar 3 is respectively equipped with streaming tank 13, streaming tank 14 and streaming tank 15, and the discharge port of the jar of jetting all is positioned at the top of streaming tank.
Below in conjunction with accompanying drawing breeze blowing technology of the present invention is elaborated.
Utilize the device of aforesaid coal injection, the breeze blowing technology of present embodiment is: winding-up jar can be put 4 pulverized coal conveyings to blast furnace 7 coal injections that communicate with its discharge port or to other coal dust material feeding that links to each other with its discharge port.
When opening controlling valve I5 and closed control valve II6, being responsible for the 10 winding-up jars 1 that link to each other with control valve I place communicates with house steward, all winding-up jars are set up in parallel and all communicate with house steward 8 at this moment, as shown in Figure 1, the winding-up jar 1 of present embodiment, winding-up jar 2 and winding-up jar 3 are set up in parallel and all communicate with house steward 8, carry out winding-up according to the order of sequence, pressure release, coaling, pressurization, wait for, the winding-up process, with spraying in the blast furnace 7 of coal dust continous-stable, when wherein a winding-up jar is jetted, in addition two winding-ups jar are in ready state in succession, can realize respectively according to the order of sequence and continuously to blast furnace 7 coal injections.
When closed control valve I5 and opening controlling valve II6, be responsible for control valve I place that 10 winding-up jars that link to each other 1 are independent to communicate with other coal dust material feeding point 4, and be used for putting 4 pulverized coal conveyings to other coal dust material feeding, other be set up in parallel and a plurality of winding-ups that communicate with house steward 8 jar respectively according to the order of sequence and continuously to blast furnace 7 coal injections, as shown in Figure 1, when closed control valve I5 and opening controlling valve II6, winding-up jar 1 is independent to communicate with other coal dust material feeding point 4, winding-up jar 2 and winding-up jar 3 are set up in parallel and communicate with house steward 8, winding-up jar 1 is used for putting 4 pulverized coal conveyings to other coal dust material feeding, winding-up jar 2 and winding-up jar part 3 are carried out winding-up respectively in proper order, pressure release, coaling, pressurization, wait for, the winding-up process, with spraying in the blast furnace 7 of coal dust continous-stable, when wherein a winding-up jar is jetted, another winding-up jar then is in ready state, also can realize according to the order of sequence and continuously to blast furnace 7 coal injections.
Preferably, two winding-up jars that communicate with house steward 8 arbitrarily all can be according to the order of sequence and continuously to blast furnace 7 coal injections, so, and when other winding-up jar is broken down or is being overhauled, also can realize not impacting winding-up to blast furnace 7 with the winding-up jar under other standard state that house steward 8 communicates.
By a plurality of winding-ups jars being set side by side to blast furnace 7 coal injections, the stability of coal powder injection operation is very high, when some winding-up jars break down, this jar withdraws from the winding-up circulation and carries out Maintenance and Repair, remaining winding-up jar more than or equal to two continues to carry out according to the order of sequence and coal powder injection continuously to blast furnace, can not have influence on the normal winding-up of blast furnace 7.In addition, a plurality of winding-up jars when blast furnace blowing, can reclaim winding-up jar interior part high pressure gas side by side, save operation cost.The coal injection device of present embodiment and breeze blowing technology can be implemented in and need not increase any equipment and under the situation of a construction investment, this coal injection system has possessed the conveying function of coal dust, satisfied the coal dust demand of sub-distribution again, can't have influence on the normal winding-up of blast furnace, and the security that has improved powder process winding-up intersite system greatly, realize the balance of powder process amount and winding-up amount in the full factory scope, and improved the property fully mutually between many powder process injecting stations.
Further, but control valve I5 and control valve II6 manual switchover also can automatically switch, increase the performance of manipulating of control valve.Preferably, the blowing media that adopts in the breeze blowing process can be a pressurized air, also can be other rare gas element, can also be the mixed gas that pressurized air adds other rare gas element.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. device with the direct coal injection of blast furnace of coal dust conveying function, it is characterized in that: comprise at least three winding-up jars and the house steward (8) who communicates with blast furnace, the discharge port of described winding-up jar communicates with house steward (8) by being responsible for respectively, and a described wherein person in charge is provided with control valve I, this person in charge who is provided with control valve I also links to each other with other coal dust material feeding point (4) by arm (9), described arm is provided with control valve II, and described control valve I is positioned at the person in charge respectively and between arm (9) and house steward's (8) the link position.
2. according to the device of the described coal injection of claim 1, it is characterized in that: also comprise respectively and control valve I(5) with control valve II(6) valve positioner that links to each other.
3. according to the device of the described coal injection of claim 1, it is characterized in that: the bottom of described winding-up jar is provided with streaming tank, and described discharge port is positioned at the top of streaming tank.
4. according to the device of the described coal injection of claim 1, it is characterized in that: the bottom of described winding-up jar is provided with streaming tank, and described discharge port is positioned at the bottom of streaming tank.
5. breeze blowing technology that is used for each described coal injection device of claim 1-4 is characterized in that: described winding-up jar can be to the pulverized coal injection in blast furnace that communicates with its discharge port or simultaneously can also be to other coal dust material feeding point (4) pulverized coal conveying that links to each other with its discharge port.
6. coal-injection process according to claim 5, it is characterized in that: opening controlling valve I(5) and closed control valve II(6), be responsible for the winding-up jar (1) link to each other with control valve I place and communicate with house steward, all are jetted jar all according to the order of sequence and continuously to blast furnace (7) coal injection.
7. coal-injection process according to claim 5, it is characterized in that: closed control valve I(5) and opening controlling valve II(6), be responsible for control valve I place and be blocked between the winding-up jar (1) link to each other and the house steward and communicate with other coal dust material feeding point, and should winding-up jar (1) to other coal dust material feeding point (4) pulverized coal conveying, all the other winding-up jars are according to the order of sequence and continuously to pulverized coal injection in blast furnace.
8. according to each described coal-injection process of claim 5-7, it is characterized in that: described two winding-ups that communicate with house steward (8) arbitrarily jar all can be according to the order of sequence and continuously to blast furnace (7) coal injection.
9. coal-injection process according to claim 8 is characterized in that: but described control valve I and control valve II manual switchover also can be automaticallyed switch.
10. coal-injection process according to claim 8 is characterized in that: the medium that adopts in the described breeze blowing process can be a pressurized air, also can be other rare gas element, can also be the mixed gas that pressurized air adds other rare gas element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102178630A CN102277469A (en) | 2011-08-01 | 2011-08-01 | Blast furnace pulverized coal direct injection device with pulverized coal conveying function and process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102178630A CN102277469A (en) | 2011-08-01 | 2011-08-01 | Blast furnace pulverized coal direct injection device with pulverized coal conveying function and process thereof |
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| CN102277469A true CN102277469A (en) | 2011-12-14 |
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| CN2011102178630A Pending CN102277469A (en) | 2011-08-01 | 2011-08-01 | Blast furnace pulverized coal direct injection device with pulverized coal conveying function and process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104471079A (en) * | 2012-09-20 | 2015-03-25 | 三菱重工业株式会社 | Blast furnace installation |
| CN109371186A (en) * | 2018-12-21 | 2019-02-22 | 唐山市德龙钢铁有限公司 | A kind of coal powder injection apparatus of blast furnace and its automatically switch anti-unimpeded method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123632A (en) * | 1989-02-14 | 1992-06-23 | Paul Wurth S.A. | Method for the pneumatic injection of metered quantities of powdered substances into a chamber at a variable pressure |
| CN201268712Y (en) * | 2008-10-07 | 2009-07-08 | 南京钢铁联合有限公司 | Blast furnace coal powder mutual spraying apparatus |
| CN201367434Y (en) * | 2009-03-16 | 2009-12-23 | 石如松 | Coal injection and nitrogen conservation device for blast furnaces |
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN202152353U (en) * | 2011-08-01 | 2012-02-29 | 中冶赛迪工程技术股份有限公司 | Device with pulverized coal conveying function for directly injecting pulverized coal into blast furnace |
-
2011
- 2011-08-01 CN CN2011102178630A patent/CN102277469A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5123632A (en) * | 1989-02-14 | 1992-06-23 | Paul Wurth S.A. | Method for the pneumatic injection of metered quantities of powdered substances into a chamber at a variable pressure |
| CN201268712Y (en) * | 2008-10-07 | 2009-07-08 | 南京钢铁联合有限公司 | Blast furnace coal powder mutual spraying apparatus |
| CN201367434Y (en) * | 2009-03-16 | 2009-12-23 | 石如松 | Coal injection and nitrogen conservation device for blast furnaces |
| CN101899542A (en) * | 2010-08-05 | 2010-12-01 | 中冶南方工程技术有限公司 | Coal injection system of blast furnace |
| CN202152353U (en) * | 2011-08-01 | 2012-02-29 | 中冶赛迪工程技术股份有限公司 | Device with pulverized coal conveying function for directly injecting pulverized coal into blast furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104471079A (en) * | 2012-09-20 | 2015-03-25 | 三菱重工业株式会社 | Blast furnace installation |
| CN104471079B (en) * | 2012-09-20 | 2017-02-22 | 三菱重工业株式会社 | Blast furnace installation |
| CN109371186A (en) * | 2018-12-21 | 2019-02-22 | 唐山市德龙钢铁有限公司 | A kind of coal powder injection apparatus of blast furnace and its automatically switch anti-unimpeded method |
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Application publication date: 20111214 |