CN205347464U - Can arrange stifled blast furnace coal injection device fast - Google Patents
Can arrange stifled blast furnace coal injection device fast Download PDFInfo
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- CN205347464U CN205347464U CN201620108048.9U CN201620108048U CN205347464U CN 205347464 U CN205347464 U CN 205347464U CN 201620108048 U CN201620108048 U CN 201620108048U CN 205347464 U CN205347464 U CN 205347464U
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Abstract
The utility model discloses a can arrange stifled blast furnace coal injection device fast, it is connected with the coal powder injection branch pipe that several end -to -end connections have the coal powder injection rifle including the buggy storehouse, jetting jar, blender and the distributor that connect gradually on, be equipped with the coal powder injection ball valve on the every coal powder injection branch pipe, and coal powder injection branch pipe figure is the same with the blast -furnace tuyere number, its characterized in that: the return bend department of coal powder injection branch pipe installs the three -way valve, and the coal powder injection branch pipe is connected to two valve ports of three -way valve, and metal collapsible tube is connected to another valve port. The utility model discloses can be timely discharge a coal powder injection intraductal jam position does not have the potential safety hazard, and it is short to arrange the stifled time, can in time recover the spray gun coal powder injection, has improved all rates of spouting of production efficiency and buggy, has reduced the outer cribbing of buggy simultaneously and has made an appointment with the energy.
Description
Technical field
This utility model relate to a kind of can the coal powder injection apparatus of blast furnace of quick unimpeded.
Background technology
Blast furnace technology is the main method producing iron and steel at present, adopts the iron and steel that blast furnace technology produces to account for more than the 95% of world steel total output.Modern blast furnace is smelted need to use coke, and its effect in blast furnace is to provide the heat that smelting process needs；The reducing agent that reducing iron ore needs；And maintain the skeleton of blast furnace stock column (particularly cohesive zone and below position) breathability.Pulverized coal injection in blast furnace is the anchracite duff or bituminous coal powder or the mixed coal powder of both that directly winding-up is levigate from blast-furnace tuyere to stove, the effect that heat and reducing agent are provided is acted with substitute for coke, thus reducing coke ratio, reduce pig iron cost, it is the important technical revolution that modern blast furnace is smelted, and bf coal injection system is the visual plant in blast furnace technology.
At present, in the production process of blast furnace ironmaking, bf coal injection system adds the mode pulverized coal conveying of gas in blast furnace generally by pipeline, specifically its structure includes the Pulverized Coal Bin being sequentially connected with, jet tank, allotter, coal jetting branch and coal powder lance, coal dust enters from Pulverized Coal Bin after being blown into allotter in winding-up tank and is sprayed into the cupola well of blast furnace in by coal powder lance through blast-furnace tuyere through coal jetting branch, coal jetting branch is provided with coal injection ball valve, to control the flow of coal dust.But due to the distance between coal powder lance and allotter, there is bend, coal dust is easy in coal jetting branch to form blocking, if blocking can not be dredged in time, easily burning rifle, effect is all sprayed in impact, it is impossible to meeting injecting coal quantity, the short time can not meet institute's calorific requirement in stove.After coal jetting branch blocking, prior art many employings pneumatics recoils and along rushing, time length, difficulty are big, and simultaneously after coal jetting branch bent part from blocking, employing pneumatics recoil and suitable punching are difficult to dredge, and dredge only by open pipe, and open pipe one side time length, workload are big.On the other hand there is also potential safety hazard, because building the pressure in pipeline, because pressure is hurted sb.'s feelings coal dust ejection eyes and wound people during open pipe.
Utility model content
In view of this, this utility model provide a kind of can the coal powder injection apparatus of blast furnace of quick unimpeded, the block part in coal jetting branch can be discharged by time, it does not have potential safety hazard, and the unimpeded time is short, improves all spray rates, reduces cribbing outside coal dust and is about the energy, raising production efficiency.
For solving above technical problem, the technical solution of the utility model be adopt a kind of can the coal powder injection apparatus of blast furnace of quick unimpeded, it includes the Pulverized Coal Bin, winding-up tank, blender and the allotter that are sequentially connected with, allotter is connected to several end and is connected to the coal jetting branch of coal powder lance, every coal jetting branch is provided with coal injection ball valve, coal jetting branch number is identical with blast-furnace tuyere number, pipe bent position at described coal jetting branch is provided with three-way valve, two valve ports of three-way valve connect coal jetting branch, and another valve port connects metal hose.
Further, being provided with a three-way valve every 30～50cm place on described coal jetting branch, two valve ports of described three-way valve connect coal jetting branch, and another valve port connects metal hose.
Preferably, described coal jetting branch is DN12 stainless steel tube, and coal injection ball valve is DN20 abrasion-proof stainless steel ball valve, and three-way valve is Pneumatic three-way valve, and port size is DN20.
Further, described Pulverized Coal Bin is provided with bagroom, it is to avoid coal dust contaminated environment.
Compared with prior art, of the present utility model theing improvement is that is provided with several three-way valve on coal dust arm, particularly in the place of the coal dust arm susceptible to plugging pipe bent position of appearance and relatively long distance, three-way valve is installed, when coal dust props up blockage, the spool of three-way valve is gone to metal hose valve port, metal hose is pulled out after being filled with certain cleaning gas by metal hose to moment in coal jetting branch, change the winding-up air pressure in winding-up tank into purging air pressure simultaneously, just can quickly the coal dust of blocking be dispelled, therefore the block part in coal jetting branch can be discharged by this utility model timely, there is no potential safety hazard, the unimpeded time is short, spray gun coal powder injection can be recovered in time, improve all spray rates of production efficiency and coal dust, the energy that simultaneously decreased the outer cribbing of coal dust about.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with detailed description of the invention, the utility model is described in further detail.
Referring to Fig. 1, this utility model provide a kind of can the coal powder injection apparatus of blast furnace of quick unimpeded, it includes the Pulverized Coal Bin 1, winding-up tank 2, blender 3 and the allotter 4 that are sequentially connected with, allotter 4 is connected to several end and is connected to the coal jetting branch 5 of coal powder lance 6, every coal jetting branch 5 is provided with coal injection ball valve 7, coal jetting branch 5 number is identical with blast-furnace tuyere number, pipe bent position at described coal jetting branch 5 is provided with three-way valve 8, two valve ports of three-way valve 8 connect coal jetting branch 5, and another valve port connects metal hose 9.
Further, being provided with a three-way valve 8 every 30～50cm place on described coal jetting branch 5, two valve ports of described three-way valve 8 connect coal jetting branch 5, and another valve port connects metal hose 9.
Preferably, described coal jetting branch 5 is DN12 stainless steel tube, and coal injection ball valve 7 is DN20 abrasion-proof stainless steel ball valve, and three-way valve 8 is Pneumatic three-way valve, and port size is DN20.
Further, described Pulverized Coal Bin 1 is provided with bagroom 10, it is to avoid coal dust contaminated environment.
Coal dust enters in winding-up tank 2 through Pulverized Coal Bin 1, enters through blender 3 and sprayed into the cupola well of blast furnace in by coal powder lance 6 through blast-furnace tuyere through coal jetting branch 5 after allotter 4 after being blowed fluidisation, and coal jetting branch 5 is provided with coal injection ball valve 7, to control the flow of coal dust.The place that this utility model holds susceptible to plugging pipe bent position and relatively long distance at coal dust arm is provided with three-way valve, when coal dust props up blockage, the spool of three-way valve is gone to metal hose valve port, metal hose is pulled out after being filled with certain cleaning gas by metal hose to moment in coal jetting branch, change the winding-up air pressure in winding-up tank into purging air pressure, it is possible to quickly dispelled by the coal dust of blocking simultaneously.
Below it is only preferred implementation of the present utility model, it is noted that above-mentioned preferred implementation is not construed as restriction of the present utility model, and protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, without departing from spirit and scope of the present utility model, it is also possible to making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. one kind can the coal powder injection apparatus of blast furnace of quick unimpeded, including the Pulverized Coal Bin being sequentially connected with, winding-up tank, blender and allotter, allotter is connected to several end and is connected to the coal jetting branch of coal powder lance, every coal jetting branch is provided with coal injection ball valve, coal jetting branch number is identical with blast-furnace tuyere number, it is characterized in that: the pipe bent position at described coal jetting branch is provided with three-way valve, two valve ports of three-way valve connect coal jetting branch, and another valve port connects metal hose.
2. according to claim 1 a kind of can the coal powder injection apparatus of blast furnace of quick unimpeded, it is characterised in that: on described coal jetting branch, every 30～50cm place, one three-way valve is installed.
3. according to claim 2 a kind of can the coal powder injection apparatus of blast furnace of quick unimpeded, it is characterised in that: two valve ports of described three-way valve connect coal jetting branch, and another valve port connects metal hose.
4. a kind of according to any one of claim 1-3 can the coal powder injection apparatus of blast furnace of quick unimpeded, it is characterized in that: described coal jetting branch is DN12 stainless steel tube, coal injection ball valve is DN20 abrasion-proof stainless steel ball valve, and three-way valve is Pneumatic three-way valve, and port size is DN20.
5. a kind of according to any one of claim 1-3 can the coal powder injection apparatus of blast furnace of quick unimpeded, it is characterised in that: described Pulverized Coal Bin is provided with bagroom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620108048.9U CN205347464U (en) | 2016-02-02 | 2016-02-02 | Can arrange stifled blast furnace coal injection device fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620108048.9U CN205347464U (en) | 2016-02-02 | 2016-02-02 | Can arrange stifled blast furnace coal injection device fast |
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| Publication Number | Publication Date |
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| CN205347464U true CN205347464U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620108048.9U Active CN205347464U (en) | 2016-02-02 | 2016-02-02 | Can arrange stifled blast furnace coal injection device fast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070299A (en) * | 2021-03-23 | 2021-07-06 | 首钢长治钢铁有限公司 | Cleaning device of coal injection distributor and blast furnace coal injection system |
-
2016
- 2016-02-02 CN CN201620108048.9U patent/CN205347464U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113070299A (en) * | 2021-03-23 | 2021-07-06 | 首钢长治钢铁有限公司 | Cleaning device of coal injection distributor and blast furnace coal injection system |
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