CN202265584U - Coal injection system of blast furnace - Google Patents
Coal injection system of blast furnace Download PDFInfo
- Publication number
- CN202265584U CN202265584U CN2011203947081U CN201120394708U CN202265584U CN 202265584 U CN202265584 U CN 202265584U CN 2011203947081 U CN2011203947081 U CN 2011203947081U CN 201120394708 U CN201120394708 U CN 201120394708U CN 202265584 U CN202265584 U CN 202265584U
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- coal
- pulverized coal
- bin
- coal bin
- injection system
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Abstract
The embodiment of the utility model discloses a coal injection system of a blast furnace, comprising a first pulverized coal bin, wherein a plurality of first coal injection tanks are disposed on the bottom of the first pulverized coal bin; a second pulverized coal bin, wherein a plurality of second coal injection tanks are disposed on the bottom of the second pulverized coal bin; and an air compressor communicated with the first pulverized coal bin and the second pulverized coal bin via a first compressed air tube. Via the structure of the coal injection system of a blast furnace, networked transformation for two sets of coal injection systems is realized, production complementation is really realized, and a good promotion function is acted on the optimum distribution of resources, the increase of yield and the reduction of consumption. After networking is realized, safety and reliability are enhanced; and if one system goes wrong and stops injection, the other system can be switched to be in use, thereby reducing loss to be the lowest.
Description
Technical field
The utility model relates to metallurgical technology field, more particularly, relates to a kind of bf coal injection system.
Background technology
Blast furnace is that the transverse section is circular ironmaking shaft furnace, and blast-furnace body is divided into furnace throat, shaft, furnace bosh, bosh and cupola well from top to bottom.Because the blast furnace technology economic target is good, technology is simple, and turnout is big, and labor productivity is high, and low power consumption and other advantages is so the iron that this method is produced accounts for the overwhelming majority of world's iron ultimate production.The height of coal powder injection production level directly has influence on the burnt consumption reduction work of joint of blast furnace in the blast furnace technology.Use two in the existing blast furnace and overlap coal injection systems, but two cover coal injection systems are separate, production can not be complementary, exists coal powder injection and produce instability, many drawbacks that coal is lower.
For solving a great problem that puzzlement ironmaking is produced; Break through this production bottleneck; The iron work engineering technical personnel are through practical studies and great amount of calculation; New and old two cover coal injection systems have been implemented the networking technology transformation, realized that balance, the science of the falling mutually of feed bin, intercommunication and coal dust used, created favourable condition for further reducing the ironmaking coke consumption.
The utility model content
In view of this, the utility model provides a kind of bf coal injection system, to realize reducing the purpose of ironmaking coke consumption.
For realizing above-mentioned purpose, the utility model provides following technical scheme:
A kind of bf coal injection system comprises:
First Pulverized Coal Bin, the bottom of said first Pulverized Coal Bin are provided with a plurality of first coal powder injection jars;
Second Pulverized Coal Bin, the bottom of said second Pulverized Coal Bin are provided with a plurality of second coal powder injection jars; With
Through first press blank pipe to be connected with said first Pulverized Coal Bin and second Pulverized Coal Bin air compressor machine.
Wherein, be provided with second between said first Pulverized Coal Bin and second Pulverized Coal Bin and press blank pipe.
Wherein, said second press blank pipe to be connected with said first Pulverized Coal Bin and second Pulverized Coal Bin respectively through arm.
Wherein, also be provided with the winding-up pipe that is communicated with the said first coal powder injection jar and the second coal powder injection jar respectively on the said second pressure blank pipe.
Wherein, the model of the said second pressure blank pipe is DN200.
Wherein, said second press blank pipe to be provided with a plurality of by-pass valve controls.
Bf coal injection system among the utility model embodiment comprises: first Pulverized Coal Bin, the bottom of said first Pulverized Coal Bin are provided with a plurality of first coal powder injection jars; Second Pulverized Coal Bin, the bottom of said first Pulverized Coal Bin are provided with a plurality of second coal powder injection jars; With the air compressor machine that is connected with said first Pulverized Coal Bin and second Pulverized Coal Bin through the first pressure blank pipe.Thereby realized the networking transformation of two cover coal injection systems, really realized producing complementation that to most optimum distribution of resources, good promoter action has been played in raising output, low consumption.After realizing networking, safe reliability improves, and breaks down like a system and stops spray, then can another system's incision be used, and loss is dropped to minimum.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation of the bf coal injection system that Fig. 1 provides for the utility model embodiment.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides a kind of bf coal injection system, to realize reducing the purpose of ironmaking coke consumption.
As shown in Figure 1; This bf coal injection system comprises first Pulverized Coal Bin 2, second Pulverized Coal Bin 3 and air compressor machine (not shown); Wherein, The bottom that the bottom of first Pulverized Coal Bin 2 is provided with a plurality of first coal powder injection jar, 4, the second Pulverized Coal Bin 3 is provided with the second coal powder injection jar 5, and air compressor machine presses the blank pipe (not shown) to be connected with first Pulverized Coal Bin 2 and second Pulverized Coal Bin 3 through first.Through the above-mentioned coal powder injection processing that realization is set blast furnace 6 and blast furnace 7.Realized the networking transformation of two cover coal injection systems, really realized producing complementation that to most optimum distribution of resources, good promoter action has been played in raising output, low consumption.After realizing networking, safe reliability improves, and breaks down like a system and stops spray, then can another system's incision be used, and loss is dropped to minimum.
Before not implementing this project, it is required that the pulverized coal injection amount can not satisfy production, and day output is only about 4300; After implementing coal injection system networking transformation, the rich ability of new system is supplemented to legacy system, has improved the coal powder injection ratio greatly; Day output rises to about 4500 tons, and the blast furnace feeding coke ratio drops to 420kg/t by the 435kg/t before transforming simultaneously, and coal powder injection rises to 130kg/t than from 100kg/t; Coke is 0.8: 1 with the heating ratio of coal, and the iron work monthly output is by 132000 tons/month.Direct economic benefit calculates as follows:
1-3# stove ton rail fuel expense Jiao T1=435kg before transforming/t * 1.65 yuan/kg+100kg coal/t * 0.7 yuan/kg=787.75 unit/ton;
Transform back 1-3# stove ton rail fuel expense Jiao T2=420kg/t * 1.65 yuan/kg+130kg coal/t * 0.7 yuan/kg=784 unit/ton;
Every month direct economic benefit T=(T1-T2)=(787.75-784) * 132000t/ month=49.5 ten thousand yuan; Year is created about 12 * 49.5 ten thousand yuan=6,000,000 yuan of economic benefit.
Be provided with second between first Pulverized Coal Bin 2 and second Pulverized Coal Bin 3 and press blank pipe 1.
Second presses blank pipe 1 to be connected with first Pulverized Coal Bin 2 and second Pulverized Coal Bin 3 respectively through arm.
Also be provided with the winding-up pipe 8 that is communicated with the first coal powder injection jar 4 and the second coal powder injection jar 5 respectively on the second pressure blank pipe 1.
Wherein, the model of the second pressure blank pipe 1 is DN200.
Wherein, second press blank pipe 1 to be provided with a plurality of by-pass valve controls.
5 air compressor machines are arranged in the blast furnace; The used for air compressor that 2 pressure is 1.3MPa is in newly-built pulverized coal injection; The air compressor machine that 3 pressure is 0.8MPa supplies blast furnace miscellaneous equipment and Steel Mill's usefulness, and pressure is that the air compressor machine of 0.8MPa is dual-purpose one to be equipped with, through the transformation to the pressure blank pipe; Make that 6 pressure are arranged in the existing coal injection system is that the air compressor machine that 3 pressure in 1.0MPa air compressor machine and the newly-built blast furnace are 0.8MPa is pressed blank pipe net couplet; Reasonably allotment is used, and will avoid influences the ordinary production of corresponding unit because of shutting down appears in air compressor machine.
Concrete modification scheme is: press blank pipe to press empty house steward and the DN200 of Steel Mill to press empty house steward to be communicated with steelworks DN250 with a DN200.
In coal powder injection is produced, break down like coal pulverizer, make coal dust free in the Pulverized Coal Bin, cause pulverized coal injection to stop spray.The winding-up pipe 8 that between two coal powder injections, connects a DN80; Can the coal dust in the coal injection system of ordinary production be transported in the Pulverized Coal Bin in the coal injection system that breaks down through the winding-up pipe of transforming 8; Through reasonably allocating the powder process operation in the coal powder injection; Blast furnace stops spray in the time of can avoiding breaking down because of coal pulverizer, for the rush repair equipment fault gains time.Concrete modification scheme is: (1) overlaps 8 and long DN50 of 300 meters of long 300 meters a DN80 winding-up pipe and presses blank pipe to introduce in the existing coal injection system from coal injection system, pipeline is overhead laid for 6 meters along outside, 2 coal piling fields; The winding-up that (2) will increase newly is managed 8 two and is inserted respectively on two Pulverized Coal Bin in the coal injection system and the winding-up jar, and newly-increased pressure blank pipe two is inserted respectively on two empty house stewards of the pressure in the coal injection system; (3) press on the blank pipe with DN50 at newly-increased DN80 winding-up pipe 8, every copper stopcock of distance peace at a distance from 10 meters is when stopping up for winding-up pipe 8 roads, with pressing empty winding-up pipe 8 to obstruction to purge.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. a bf coal injection system is characterized in that, comprising:
First Pulverized Coal Bin, the bottom of said first Pulverized Coal Bin are provided with a plurality of first coal powder injection jars;
Second Pulverized Coal Bin, the bottom of said second Pulverized Coal Bin are provided with a plurality of second coal powder injection jars; With
Through first press blank pipe to be connected with said first Pulverized Coal Bin and second Pulverized Coal Bin air compressor machine.
2. bf coal injection system as claimed in claim 1 is characterized in that, is provided with second between said first Pulverized Coal Bin and second Pulverized Coal Bin and presses blank pipe.
3. bf coal injection system as claimed in claim 2 is characterized in that, said second presses blank pipe to be connected with said first Pulverized Coal Bin and second Pulverized Coal Bin respectively through arm.
4. bf coal injection system as claimed in claim 3 is characterized in that, also is provided with the winding-up pipe that is communicated with the said first coal powder injection jar and the second coal powder injection jar respectively on the said second pressure blank pipe.
5. bf coal injection system as claimed in claim 4 is characterized in that, the model of the said second pressure blank pipe is DN200.
6. bf coal injection system as claimed in claim 4 is characterized in that, said second presses blank pipe to be provided with a plurality of by-pass valve controls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203947081U CN202265584U (en) | 2011-10-17 | 2011-10-17 | Coal injection system of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203947081U CN202265584U (en) | 2011-10-17 | 2011-10-17 | Coal injection system of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202265584U true CN202265584U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203947081U Expired - Fee Related CN202265584U (en) | 2011-10-17 | 2011-10-17 | Coal injection system of blast furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202265584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805243A (en) * | 2015-05-20 | 2015-07-29 | 山东钢铁股份有限公司 | Parallel-coal-injection-tank device of blast furnace |
| CN115254363A (en) * | 2022-07-27 | 2022-11-01 | 重庆钢铁股份有限公司 | Pulverized coal balanced calling system and method thereof |
-
2011
- 2011-10-17 CN CN2011203947081U patent/CN202265584U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805243A (en) * | 2015-05-20 | 2015-07-29 | 山东钢铁股份有限公司 | Parallel-coal-injection-tank device of blast furnace |
| CN115254363A (en) * | 2022-07-27 | 2022-11-01 | 重庆钢铁股份有限公司 | Pulverized coal balanced calling system and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20151017 |
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| EXPY | Termination of patent right or utility model |