CN219730967U - Blockage-removing pulverized coal recycling device of blast furnace coal injection gun - Google Patents
Blockage-removing pulverized coal recycling device of blast furnace coal injection gun Download PDFInfo
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- CN219730967U CN219730967U CN202321339614.3U CN202321339614U CN219730967U CN 219730967 U CN219730967 U CN 219730967U CN 202321339614 U CN202321339614 U CN 202321339614U CN 219730967 U CN219730967 U CN 219730967U
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- Prior art keywords
- coal
- injection
- blast furnace
- blockage
- tank
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- 239000003245 coal Substances 0.000 title claims abstract description 81
- 238000002347 injection Methods 0.000 title claims abstract description 52
- 239000007924 injection Substances 0.000 title claims abstract description 52
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 239000002817 coal dust Substances 0.000 claims abstract description 17
- 238000001914 filtration Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 238000003915 air pollution Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000007664 blowing Methods 0.000 description 14
- 239000000843 powder Substances 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 208000028571 Occupational disease Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Manufacture Of Iron (AREA)
Abstract
The utility model discloses a blockage-removing pulverized coal recycling device of a blast furnace coal injection gun, which comprises an injection tank, wherein a coal inlet is arranged outside the injection tank, and a filter is arranged inside the injection tank; the device is characterized in that an air inlet and a coal outlet are formed in the outside of the injection tank, so that coal dust in the injection tank enters the coal injection gun, the device recycles the coal dust recovered during cleaning the coal gun, and the coal dust is re-injected through the air inlet and the coal outlet, so that the loss of the coal dust is reduced, the cost is saved, and the air pollution is avoided.
Description
Technical Field
The utility model relates to a blockage-removing coal powder recycling device of a blast furnace coal injection gun, and belongs to the technical field of steel refining devices.
Background
In the iron-making production process, coal powder is sprayed into the furnace through a coal spraying gun, so that the effects of reducing the coke ratio of the blast furnace and reducing the cost are achieved. In the process of blowing coal powder by a blast furnace coal injection gun, the coal powder can be inevitably entrained with partial impurities or blocky matters so as to block the coal injection gun, the impurities must be reversely blown out to remove the blocking matters, a large amount of coal powder is blown out in the removal process, the air dust pollution is increased, the coal powder loss is caused, and the coal powder is discharged outwards to easily cause a fire accident.
In the prior art, patent CN 210528959U discloses a blast furnace coal injection gun blockage-removing pulverized coal recovery device, which has the technical scheme that: the coal dust collecting box is provided with a filter bag, the collecting box is provided with a plurality of pipeline channels, when the coal dust gun is blocked, the coal dust pipeline is communicated with the inside of the coal dust collecting box, the inside of the box is pressurized firstly and then depressurized to form siphonage, the blocked coal dust in the pipeline is sucked into the coal dust collecting box, the coal dust is blocked by the filter bag and is remained in the collecting box, and the collected coal dust is discharged through the ash discharge pipeline. In the technical scheme, the pressure in the collecting box is released after punching, the operation is troublesome, the operation is easy to miss, and the collected coal ash cannot be reused.
Disclosure of Invention
The utility model aims to: the utility model aims to provide a device for recycling and reutilizing pulverized coal sprayed in a blast furnace coal injection gun blockage removal process.
The technical scheme is as follows: the utility model relates to a blockage-removing pulverized coal recycling device of a blast furnace coal injection gun, which comprises an injection tank, wherein a coal inlet is arranged outside the injection tank, and a filter is arranged inside the injection tank; the coal injection device is characterized in that an air inlet used for communicating high-pressure gas is arranged outside the injection tank, and the air inlet is matched with the air inlet to enable coal powder inside the injection tank to enter a coal outlet of the coal injection gun.
Preferably, in order to monitor the internal pressure of the blowing tank in real time, a pressure detection meter for monitoring the internal pressure of the blowing tank is arranged outside the blowing tank.
Preferably, for quick connection, the coal inlet and the coal outlet are provided with quick connectors.
Preferably, in order to control the pressure balance inside the blowing tank, a filtering type exhaust port communicated with the inside of the blowing tank is arranged outside the blowing tank.
Preferably, in order to achieve better filtering effect, the coal inlet and the filter are both arranged at the top of the blowing tank.
Preferably, in order to facilitate the next use, a drain outlet for checking the amount of the pulverized coal in the blowing tank is arranged outside the blowing tank.
Preferably, in order to ensure the filtering effect, the filter is prevented from being blocked, so that the device can be used for a long time, and the filter is detachably connected with the blowing tank.
Preferably, in order to reduce labor intensity, the blowing tank is transferred, a base is arranged at the bottom of the blowing tank, and rollers are mounted on the base.
The beneficial effects are that: compared with the prior art, the utility model has the following advantages: 1. the pulverized coal is reused, so that the loss of the pulverized coal is reduced, and the cost is saved; 2. the coal dust is prevented from leaking, so that the ignition accident is avoided; 3. the pulverized coal does not enter air, so that air pollution is avoided, and occupational diseases are reduced; 4. the device is simple to operate and reduces labor intensity.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a cross-sectional view of a portion of the structure of fig. 1.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings.
As shown in the figure, the pressure detection meter 9, the air inlet 2 and the filtering type air outlet 4 are arranged at the middle upper part of the tank body of the injection tank 1, the coal outlet 3 is arranged at the lower part of the tank body, the sewage outlet 5 is arranged at the top of the tank body, the coal inlet 7 is arranged at the top of the tank body, the detachable filter 8 is arranged inside the tank body, and the air inlet 2 and the coal outlet 3, the filtering type air outlet 4 and the sewage outlet 5 are both communicated with the inside of the injection tank 1. The welding of jetting jar 1 jar body bottom has base 10, and handle 6 is installed to well upper portion, installs the gyro wheel on the base 10, is equipped with the quick-operation joint on coal inlet 7 and the coal outlet 3, does not show in the quick-operation joint diagram, is prior art in this field, and this device is used for moving with pipeline quick-operation joint to this unnecessary description here, base 10.
When in use, the pressure detection meter 9 on the tank body monitors the pressure of the tank body in real time; the coal inlet 7 at the top of the tank body is connected with a blow-down valve of a coal injection gun, and the coal ash discharged during the blockage removal of the coal injection gun enters the blowing tank through the coal inlet 7, and the gas during the collection of the coal dust is discharged through the filtering type exhaust port 4. The coal powder collected through the coal inlet 7 falls into a cylindrical filter 8, the filter 8 realizes the separation of the coal powder and sundries, and the coal powder without impurities falls into a tank body. The nitrogen purging inlet pipe of the coal injection gun is connected with the air inlet 2 on the tank body, a certain pressure is filled, a certain air inflow is maintained, the pressure is maintained, the nitrogen for purging the coal injection gun is utilized to pressurize the tank for secondary coal injection, and the coal outlet 3 is connected with the coal injection gun for re-injection.
The tank body is provided with a sewage outlet 5 for checking whether residual pulverized coal exists in the tank body.
The utility model is used for improving and lifting the field working environment, and avoiding pollution caused by coal dust discharge, so as to realize green sustainable iron making. The coal powder is cleaned for 2-3 times per day, 10-20 kg of coal powder is collected once, 1kg of coal powder is calculated according to 1.5 yuan, and 26 coal injection guns are arranged in the blast furnace. On average, blocking 20 times per month, 50Kg per discharge, average monthly savings: 20 x 50 x 1.5 x 12 = 18000 yuan, 1 year calculated as 350 days of work, 1 year saving: 26 x 2 x 350 x 1.5 x 10=27.3 ten thousand.
Claims (7)
1. The device for recycling the blocked coal dust of the blast furnace coal injection gun comprises an injection tank (1), wherein a coal inlet (7) is arranged outside the injection tank (1), and a filter (8) is arranged inside the injection tank (1); the coal injection device is characterized in that an air inlet (2) for communicating high-pressure gas is arranged outside the injection tank (1), and the air inlet is matched with the air inlet (2) to enable coal dust in the injection tank (1) to enter a coal outlet (3) of the coal injection gun.
2. The blockage-removing pulverized coal recycling device for the blast furnace coal injection gun according to claim 1, wherein a pressure detection meter (9) is arranged outside the injection tank (1).
3. The blockage-removing pulverized coal recycling device for the blast furnace coal injection gun according to claim 1, wherein a filtering type exhaust port (4) is arranged at the upper part of the injection tank (1).
4. The blockage-removing pulverized coal recycling device of the blast furnace coal injection gun according to claim 1, wherein the filter (8) is detachably connected with the injection tank (1).
5. The blockage-removing pulverized coal recycling device for the blast furnace coal injection gun according to claim 1, wherein a drain outlet (5) is arranged at the bottom of the injection tank (1).
6. The blockage-removing pulverized coal recycling device for the blast furnace coal injection gun according to claim 1, wherein the coal inlet (7) and the filter (8) are arranged at the top of the injection tank.
7. The blockage-removing pulverized coal recycling device for the blast furnace coal injection gun according to claim 1, wherein a base (10) is arranged at the bottom of the injection tank (1), and rollers are mounted on the base (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321339614.3U CN219730967U (en) | 2023-05-30 | 2023-05-30 | Blockage-removing pulverized coal recycling device of blast furnace coal injection gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321339614.3U CN219730967U (en) | 2023-05-30 | 2023-05-30 | Blockage-removing pulverized coal recycling device of blast furnace coal injection gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219730967U true CN219730967U (en) | 2023-09-22 |
Family
ID=88061308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321339614.3U Active CN219730967U (en) | 2023-05-30 | 2023-05-30 | Blockage-removing pulverized coal recycling device of blast furnace coal injection gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219730967U (en) |
-
2023
- 2023-05-30 CN CN202321339614.3U patent/CN219730967U/en active Active
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