CN102212628A - Spare pulverized coal supply method and system for blast furnace pulverized coal blowing - Google Patents
Spare pulverized coal supply method and system for blast furnace pulverized coal blowing Download PDFInfo
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- CN102212628A CN102212628A CN 201110144185 CN201110144185A CN102212628A CN 102212628 A CN102212628 A CN 102212628A CN 201110144185 CN201110144185 CN 201110144185 CN 201110144185 A CN201110144185 A CN 201110144185A CN 102212628 A CN102212628 A CN 102212628A
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Abstract
The invention discloses a spare pulverized coal supply method and a spare pulverized coal supply system for blast furnace pulverized coal blowing. The method comprises the following steps of: A, delivering pulverized coal into a delivery tank of a pulverized coal delivery system through a pulverized coal bin of the pulverized coal delivery system after the pulverized coal prepared by a pulverized coal preparation system is collected, and closing a charging valve; and B, charging air to the delivery tank of the pulverized coal delivery system by using supercharging equipment to increase pressure, opening a valve on a delivery pipe of a pulverized coal delivery pipe network connected with a pulverized coal receiving system which lacks the pulverized coal, closing a valve on a delivery pipe of a pulverized coal delivery pipe network connected with a pulverized coal receiving system which does not lack the pulverized coal, and delivering the pulverized coal to the pulverized coal receiving system. According to the method and the system, effective supply when the pulverized coal preparation systems of a plurality of blast furnace blowing stations have accidents that the coal pulverizing machines are damaged and the like and need long-time halting maintenance to cause pulverized coal lacking is realized, and the utilization rate of the pulverized coal preparation systems is high.
Description
Technical field
The present invention relates to the standby coal dust Supply Method of a kind of blast-furnace coal powder injection, belong to the blast furnace ironmaking field; The invention still further relates to the standby coal dust supply system of blast-furnace coal powder injection of this method of realization.
Background technology
Bf coal injection system generally comprises pulverized coal preparation and breeze blowing two big systems.Because coal dust preparation system powder process ability is big more; its investment is then high more; therefore; when the powder process ability of the coal dust preparation system that is equipped with and winding-up ability adapt; can save initial outlay; but when the blast furnace coal than super design level, furnace processor design improve a lot and coal dust preparation system when occurring aborning as burst accidents such as coal pulverizer damages; need long shutdown maintenance; may cause for the powder deficiency; therefore sometimes even can cause stop-spraying or subtract the spray accident; bring difficulty and cause coke ratio to raise for the operation of blast furnace, the pig iron smelting cost raises.If for preventing that this phenomenon from occurring, and strengthen the powder process ability of coal dust preparation system, it is a lot of that initial outlay is increased, and very big a part of powder process ability is idle during ordinary production, causes the fund waste.
Summary of the invention
Technical problem to be solved by this invention provides the standby coal dust Supply Method of a kind of blast-furnace coal powder injection, this method by simple structure, lower initial outlay realizes that some blast furnace blowings stand in the effective supply when lacking powder, the utilization ratio height of coal dust preparation system.
Another technical problem to be solved by this invention provides the standby coal dust supply system of a kind of blast-furnace coal powder injection; this system architecture is simple, initial outlay is lower; the coal dust preparation system utilization ratio is higher; can solve effectively that some blast-furnace coal powder preparation systems may occur aborning as burst accidents such as coal pulverizer damages, when needing the shutdown maintenance of long period, caused for the not enough problem of powder.
For solving above-mentioned first technical problem, the present invention adopts following technical scheme:
The standby coal dust Supply Method of a kind of blast-furnace coal powder injection, it comprises the following steps:
A, with the coal powder collection of coal dust preparation system preparation after the Pulverized Coal Bin of coal dust transmitting system is sent in the transmission jar of coal dust transmitting system, close the charging valve;
B, utilize supercharging equipment to the transmission jar of coal dust transmitting system inflation pressurization, and the valve on the transfer lime of the coal dust transmission pipeline network that links to each other with the coal dust receiving system of scarce powder of unlatching, close the valve on the transfer lime of the coal dust transmission pipeline network that links to each other with the coal dust receiving system that does not lack powder, coal dust is sent in the coal dust receiving system.
Further, described transmission jar is 2 and is arranged in juxtaposition, and sends when jar sending coal dust when one, and another sends jar and carries out pressure release, dress powder, and the pressurization back is stand-by.
For solving above-mentioned second technical problem, the present invention adopts following technical scheme:
The standby coal dust supply system of a kind of blast-furnace coal powder injection, comprise coal dust preparation system, the coal dust transmitting system, the coal dust transmission pipeline network, the coal dust receiving system, described coal dust preparation system links to each other with the Pulverized Coal Bin of coal dust transmitting system, the Pulverized Coal Bin of coal dust transmitting system communicates with the transmission jar, sending jar joins with gas boosting equipment, and top is connected to the charging valve, the bottom is connected with the coal dust transmission pipeline network, the transfer lime of transmission pipeline network is provided with valve and communicates with the coal dust receiving system, and described coal dust receiving system is more than 2 or 2, be respectively the receipts powder system that is positioned at different blast-furnace coal powder injections station.
Further, the transmission jar of described coal dust transmitting system is 2 and is arranged in juxtaposition or 2 tandems are arranged.
Further, described coal dust receiving system is more than 4 or 4, and described coal dust preparation system is 1-2, the approximate middle part, geographical position that is positioned at described each coal dust receiving system.
The present invention only need increase 1-2 pulverized coal preparation system, a transmitting system, with the transmission pipeline network that increases several transport pipes formation, but can satisfy the standby of a plurality of blast furnaces simultaneously for powder, when a certain blast-furnace coal powder preparation system breaks down, during for the powder deficiency, then as long as by with the valve opening on duff pipe net and the transport pipe that the coal dust receiving system at this blast furnace blowing station links to each other, valve closes on the transport pipe that will link to each other with the coal dust receiving system at other blast furnace blowing station of not being out of order, can solve this blast furnace for the not enough problem of powder to the defeated powder in this blast furnace blowing station.Therefore, this device is easy to use, and the utilization ratio height is invested lessly, has tangible economic benefit.
Description of drawings
Fig. 1 is blast-furnace coal powder injection of the present invention standby coal dust supply system structure and connection diagram.
Fig. 2 is the coal dust preparation system of the standby coal dust supply system of blast-furnace coal powder injection of the present invention and the enlarged view of coal dust transmitting system.
Among the figure, 1 is coal dust preparation system, and 2A, 2B, 2C, 2D are the coal dust receiving system, and 3 is the coal dust transmission pipeline network, and 4 is the coal dust transmitting system, and 5 is transfer lime, and 6 is Pulverized Coal Bin, and 7 are the charging valve, and 8 for sending jar, and 9 is valve, and 10 is injecting station.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
With reference to attached Fig. 1 and 2, be example with certain iron work, this iron work I blast furnace blowing station is approximate to be positioned at the middle part, geographical position of the injecting station of other all the people present's blast furnaces II number, III number, IV number, V number.I blast furnace blowing station is provided with coal dust preparation system 1 and coal dust transmitting system 4, set up coal dust receiving system 2A, 2B, 2C, 2D respectively at other 4 blast furnace blowing stations 10, coal dust receiving system 2A, 2B, 2C, 2D are the cloth bag collection machines of place injecting station 10, be connected with coal dust transmission pipeline network 3 between coal dust transmitting system 4 and coal dust receiving system 2A, 2B, 2C, the 2D, the transfer lime 5 of forming transmission pipeline network 3 is provided with valve 9.Coal dust transmitting system 4 tops are Pulverized Coal Bin 6, can receive the coal dust of coal dust preparation system 1; The bottom is to send jars 8, sends to be connected to charging valve 7 on jars 8 and to communicate with Pulverized Coal Bin 6, and joins with gas boosting equipment, sends jar 8 bottoms and links to each other with transmission pipeline network 3.Coal dust receiving system 2A, 2B, 2C, 2D place injecting station 10 itself are exactly the independent system that independently can finish powder process and winding-up.Therefore, under the ordinary production situation, II number, III number, IV number, V blast furnace respectively by coal dust receiving system 2A, 2B, 2C, 2D place injecting station 10 independent to it for powder.When II number, III number, IV number, the pulverized coal preparation system at a certain blast furnace blowing station 10 of V blast furnace breaks down, when causing its injecting station 10 to lack powder, for example, when the injecting station 10 at coal dust receiving system 2C place lacks powder, then by with valve 9 unlatchings on transmission pipeline network 3 and the transfer lime 5 that coal dust receiving system 2C links to each other, will with coal dust receiving system 2A, 2B, valve 9 on the transfer lime 5 that 2D links to each other is closed, utilize supercharging equipment with the injection tank pressure plenum to more than the 4kg, the coal dust that sends jar 8 can be transferred to the injecting station 10 at coal dust receiving system 2C place, other blast furnace blowing station also can solve by similar operations when lacking powder.
The above only is a preferable possible embodiments of the present invention, and is non-so limit to scope of patent protection of the present invention, can only be made as 2 or 3 as coal dust receiving system of the present invention, also can be made as 5 or more; The coal dust receiving system is 4 or 4 when above, and coal dust preparation system also can be set to 2; Send the method for arranging that jar also can adopt two jars of arranged side by side or two jars of tandems.So all for it equivalence techniqueses of the training centre of one of ordinary skill in the art's description according to the present invention change, and all are contained in protection scope of the present invention.
Claims (6)
1. standby coal dust Supply Method of blast-furnace coal powder injection, it is characterized in that: it comprises the following steps:
A, with the coal powder collection of coal dust preparation system preparation after the Pulverized Coal Bin of coal dust transmitting system is sent in the transmission jar of coal dust transmitting system, close the charging valve;
B, utilize supercharging equipment to the transmission jar of coal dust transmitting system inflation pressurization, and the valve on the transfer lime of the coal dust transmission pipeline network that links to each other with the coal dust receiving system of scarce powder of unlatching, close the valve on the transfer lime of the coal dust transmission pipeline network that links to each other with the coal dust receiving system that does not lack powder, coal dust is sent in the coal dust receiving system.
2. the standby coal dust Supply Method of blast-furnace coal powder injection according to claim 1 is characterized in that: described transmission jar is 2 and is arranged in juxtaposition, and sends when jar sending coal dust when one, and another sends jar and carries out pressure release, dress powder, and the pressurization back is stand-by.
3. standby coal dust supply system of blast-furnace coal powder injection that is used to realize right 1 described method, it is characterized in that: it comprises coal dust preparation system, the coal dust transmitting system, the coal dust transmission pipeline network, the coal dust receiving system, described coal dust preparation system links to each other with the Pulverized Coal Bin of coal dust transmitting system, the Pulverized Coal Bin of coal dust transmitting system communicates with the transmission jar, sending jar joins with gas boosting equipment, and top is connected to the charging valve, the bottom is connected with the coal dust transmission pipeline network, the transfer lime of transmission pipeline network is provided with valve and communicates with the coal dust receiving system, and described coal dust receiving system is more than 2 or 2, be respectively the receipts powder system that is positioned at different blast-furnace coal powder injections station.
4. the standby coal dust supply system of blast-furnace coal powder injection according to claim 3 is characterized in that: the transmission jar of described coal dust transmitting system is 2 and is arranged in juxtaposition.
5. the standby coal dust supply system of blast-furnace coal powder injection according to claim 3 is characterized in that: the transmission jar of described coal dust transmitting system is that 2 tandems are arranged.
6. according to claim 3, the standby coal dust supply system of 4 or 5 described blast-furnace coal powder injections, it is characterized in that: described coal dust receiving system is more than 4 or 4, described coal dust preparation system is 1-2, the approximate middle part, geographical position that is positioned at described each coal dust receiving system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110144185 CN102212628A (en) | 2011-05-31 | 2011-05-31 | Spare pulverized coal supply method and system for blast furnace pulverized coal blowing |
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| CN 201110144185 CN102212628A (en) | 2011-05-31 | 2011-05-31 | Spare pulverized coal supply method and system for blast furnace pulverized coal blowing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978310A (en) * | 2012-12-17 | 2013-03-20 | 武汉钢铁(集团)公司 | Coal powder injection method for blast furnace |
| CN103725814A (en) * | 2012-10-15 | 2014-04-16 | 西林钢铁集团有限公司 | Method for laying coal powder conveying pipe between two coal injection stations |
| CN111741913A (en) * | 2018-02-23 | 2020-10-02 | 三菱日立电力系统株式会社 | Powder supply hopper pressurizing device, gasification furnace facility, gasification combined power generation facility, and method for controlling powder supply hopper pressurizing device |
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| CN101397598A (en) * | 2007-09-26 | 2009-04-01 | 上海宝钢工程技术有限公司 | Coal fine preparation, blowing method and device from packed-bed smelting reduction furnace |
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| CN101397598A (en) * | 2007-09-26 | 2009-04-01 | 上海宝钢工程技术有限公司 | Coal fine preparation, blowing method and device from packed-bed smelting reduction furnace |
| CN101254861A (en) * | 2008-03-07 | 2008-09-03 | 王向明 | Fine coal dense phase conveying system of fusion reducing furnace |
| CN101498554A (en) * | 2009-03-12 | 2009-08-05 | 北京首钢自动化信息技术有限公司 | Serial automatic coal injection control system and method for blast furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725814A (en) * | 2012-10-15 | 2014-04-16 | 西林钢铁集团有限公司 | Method for laying coal powder conveying pipe between two coal injection stations |
| CN102978310A (en) * | 2012-12-17 | 2013-03-20 | 武汉钢铁(集团)公司 | Coal powder injection method for blast furnace |
| CN102978310B (en) * | 2012-12-17 | 2014-09-10 | 武汉钢铁(集团)公司 | Coal powder injection method for blast furnace |
| CN111741913A (en) * | 2018-02-23 | 2020-10-02 | 三菱日立电力系统株式会社 | Powder supply hopper pressurizing device, gasification furnace facility, gasification combined power generation facility, and method for controlling powder supply hopper pressurizing device |
| CN111741913B (en) * | 2018-02-23 | 2022-06-07 | 三菱动力株式会社 | Powder supply hopper pressurizing device, gasification furnace facility, gasification combined power generation facility, and method for controlling powder supply hopper pressurizing device |
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Application publication date: 20111012 |