CN219342181U - Gas ash conveying device for recycling dust in blast furnace gas under pressure equalizing - Google Patents
Gas ash conveying device for recycling dust in blast furnace gas under pressure equalizing Download PDFInfo
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- CN219342181U CN219342181U CN202320119718.7U CN202320119718U CN219342181U CN 219342181 U CN219342181 U CN 219342181U CN 202320119718 U CN202320119718 U CN 202320119718U CN 219342181 U CN219342181 U CN 219342181U
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Abstract
The utility model discloses a gas ash conveying device for recycling dust in a blast furnace gas in a pressure equalizing manner, which comprises a gas recycling box body, wherein a pressure equalizing and recycling ash bin is arranged at the bottom of the gas recycling box body, a ball valve is arranged at the bottom of the pressure equalizing and recycling ash bin, an ash conveying pipeline is arranged at the bottom of the pressure equalizing and recycling ash bin and positioned at the top of the ball valve, the ash conveying pipeline is connected with an ash pipe of a dry-method dust removing scraper machine, a nitrogen main blowing pipe is arranged in the pressure equalizing and recycling ash bin, and dust is directly conveyed into the dry-method dust removing scraper machine through the ash conveying pipeline; after the gas is used for ash conveying, the vehicle cost of the ash suction of the single-use suction and discharge vehicle is saved; the problem that ash cannot be discharged due to shutdown maintenance of a zinc extraction stock ground is avoided, and the problem that the gas is subjected to pressure equalizing recovery and shutdown due to dust hardening caused by unsmooth ash suction difficulty is solved; the daily labor intensity of staff is saved, the gas ash conveying operation is simple and convenient, and the operation efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of blast furnace gas dust removal, and particularly relates to a gas ash conveying device for recycling dust in a blast furnace gas pressure equalizing manner.
Background
And (3) the byproducts produced after the blast furnace smelting in the iron works are distributed to DN1300 pipelines which are arranged in double rows by a semi-clean gas DN1800 main pipe after the blast furnace raw gas is dedusted by a gravity deduster, and enter 12 dry cloth bag deduster cylinders respectively through DN700 branch pipelines. The dust remover adopts an external filtering mode. The PLC control system automatically controls the jetting pipe arranged above the filter bag mouth to carry out intermittent pulse nitrogen back-blowing with periodic timing or constant differential pressure, and the gray film covered on the filter bag is blown down into the gray bucket at the lower part. The dust in the dust hopper is sent to a dust collecting bin at regular intervals through a scraper and a lifter conveying device, dust is accumulated in the dust collecting bin to a certain dust position, and the dust is conveyed out through a suction and discharge tank truck or a humidifying type dump truck.
The dust after the blast furnace gas pressure equalizing recovery purification needs to be independently connected with the suction and discharge vehicle for dust suction and discharge operation every time, and as the suction and discharge vehicles in the factory are tense, if the quantity of the suction and discharge vehicles is not in time, the dust is hardened in the bin due to the fact that the pressure equalizing recovery gas humidity is high, and the operation difficulty and labor force are increased.
1) When the operation of absorbing and discharging ash is recovered in each equalizing mode, the absorption and discharge are not smooth due to the small ash amount and the large humidity, the ash absorption time is about 2 tons of ash absorption weight in 20 minutes each time, and the cost waste of the vehicle is caused;
2) Because the ash materials of the suction and discharge vehicle can only be discharged to the zinc extracting material field, the ash discharging operation can not be carried out during the overhaul operation of the zinc extracting material field, and the ash can not be discharged by using the dump truck after the equalizing recovery, so that the dust collection ash is accumulated and hardened in the bin;
3) If the dust is hardened in the bin, the dust can be manually cleaned only for the pressure equalizing recovery and the stop of the blast furnace, and the pressure equalizing recovery and the stop of the blast furnace can cause environmental protection accidents of dust emission and pollution caused by the fact that residual gas dust is discharged to the atmosphere when the blast furnace is in pressure equalizing.
Therefore, a gas ash conveying device for recycling dust in a blast furnace gas under pressure equalizing mode is needed.
Disclosure of Invention
The utility model aims to provide a gas ash conveying device for recycling dust removal ash in blast furnace gas under pressure equalizing.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a blast furnace gas pressure equalizing recovery dust removing's gas ash conveying device, includes the gas recovery box, the bottom of gas recovery box is equipped with the pressure equalizing and retrieves the ash storehouse, and the bottom of pressure equalizing is retrieved the ash storehouse is equipped with the ball valve, and the bottom of pressure equalizing is retrieved the ash storehouse and is located the top of ball valve and be equipped with the ash conveying pipeline, and ash conveying pipeline connects the ash pipe of dry process dust removal scraper machine, and the nitrogen gas main blow pipe is installed to pressure equalizing is retrieved the ash storehouse, directly carries the dust to the dry process dust removal scraper machine through ash conveying pipeline.
Specifically, the dry-method dust-removing scraper is connected with a dry-method dust-removing dust collection bin and is used for collecting dust in the dry-method dust-removing scraper.
Specifically, a nitrogen auxiliary blowing pipe is arranged on the ash conveying pipeline and is used for conveying dust in the ash conveying pipeline into the dry dedusting scraper.
The utility model has the following beneficial effects:
1) After the gas is used for ash conveying, the vehicle cost of the ash suction of the single-use suction and discharge vehicle is saved;
2) The problem that ash cannot be discharged due to shutdown maintenance of a zinc extraction stock ground is avoided, and the problem that the gas is subjected to pressure equalizing recovery and shutdown due to dust hardening caused by unsmooth ash suction difficulty is solved;
3) The daily labor intensity of staff is saved, the gas ash conveying operation is simple and convenient, and the operation efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1-a gas recovery box body; 2-equalizing pressure and recycling ash bin; 3-ball valve; 4-ash conveying pipelines; 5-a dry dedusting scraper machine; 6-nitrogen main blowpipe; 7-a dry dedusting ash collection bin; 8-nitrogen assist blowing pipe; 9-dust remover.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a gas ash conveying device for recycling dust removal ash in blast furnace gas in a pressure equalizing manner comprises a gas recycling box body 1, wherein a pressure equalizing recycling ash bin 2 is arranged at the bottom of the gas recycling box body 1, a ball valve 3 is arranged at the bottom of the pressure equalizing recycling ash bin 2, the bottom of the pressure equalizing recycling ash bin 2 is positioned on a ball, an ash conveying pipeline 4 is arranged at the top of the pressure equalizing recycling ash bin 3, the ash conveying pipeline 4 is connected with an ash pipe of a dry dedusting scraper machine 5, a nitrogen main blowing pipe 6 is arranged in the pressure equalizing recycling ash bin 2, and dust is directly conveyed into the dry dedusting scraper machine 5 through the ash conveying pipeline 4.
The dry-method dust-removing scraper 5 is connected with a dry-method dust-removing dust-collecting bin 7 for collecting dust in the dry-method dust-removing scraper 5.
The ash conveying pipeline 4 is provided with a nitrogen auxiliary blowing pipe 8 for conveying dust in the ash conveying pipeline 4 into the dry dedusting scraper conveyor 5.
The manufacturing method comprises the following steps:
1) Under the pressure equalizing and recycling ash bin 2, a bypass ash conveying pipeline 4 with DN300 reducing to DN80 and a soft connection control valve are manufactured at the blanking pipe of the ash bin at the upper part of the ball valve 3, and the ash conveying pipeline 4 extends for 30 meters and directly extends to the lower ash pipe of the side dry dedusting scraper machine 5;
2) Laying DN25 nitrogen auxiliary blowing pipe 8 and control valve to assist ash conveying along with newly added ash conveying pipeline 4;
3) And a DN32 nitrogen main blowing pipe 6 is branched from a main pipeline at the outlet of the nitrogen tank and is added to the upper part of the ash bin to be used as a main blowing gas for gas ash conveying, when ash is conveyed, an upper ball valve and a lower ball valve of the ash bin are closed to open a main blowing valve of the nitrogen and are directly connected, so that dust is conveyed into a dry dedusting scraper machine 5 through an ash conveying pipeline 4, and the dust is scraped into a dry dedusting ash collecting bin 7 to be concentrated for storage and discharge.
The present utility model is not limited to the above embodiments, and any person who can learn the structural changes made under the teaching of the present utility model can fall within the scope of the present utility model if the present utility model has the same or similar technical solutions.
The technology, shape, and construction parts of the present utility model, which are not described in detail, are known in the art.
Claims (3)
1. The utility model provides a blast furnace gas pressure equalizing recovery dust removing's gas ash conveying device, its characterized in that, includes the gas recovery box, the bottom of gas recovery box is equipped with the pressure equalizing and retrieves the ash storehouse, and the bottom of pressure equalizing is retrieved the ash storehouse is equipped with the ball valve, and the bottom of pressure equalizing is retrieved the ash storehouse and is located the top of ball valve and be equipped with the ash conveying pipeline, and ash conveying pipeline connects the ash pipe of dry process dust removal scraper machine, and nitrogen gas main blow pipe is installed to the pressure equalizing is retrieved the ash storehouse, directly carries the dust to the dry process dust removal scraper machine through ash conveying pipeline.
2. The gas ash conveying device for recycling dust in blast furnace gas under pressure according to claim 1, wherein the dry-process dust removing scraper is connected with a dry-process dust collecting bin for collecting dust in the dry-process dust removing scraper.
3. The gas ash conveying device for recycling dust in blast furnace gas under pressure according to claim 1, wherein a nitrogen auxiliary blowing pipe is arranged on the ash conveying pipeline for conveying dust in the ash conveying pipeline into the dry dedusting scraper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320119718.7U CN219342181U (en) | 2023-02-06 | 2023-02-06 | Gas ash conveying device for recycling dust in blast furnace gas under pressure equalizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320119718.7U CN219342181U (en) | 2023-02-06 | 2023-02-06 | Gas ash conveying device for recycling dust in blast furnace gas under pressure equalizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219342181U true CN219342181U (en) | 2023-07-14 |
Family
ID=87110238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320119718.7U Active CN219342181U (en) | 2023-02-06 | 2023-02-06 | Gas ash conveying device for recycling dust in blast furnace gas under pressure equalizing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219342181U (en) |
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2023
- 2023-02-06 CN CN202320119718.7U patent/CN219342181U/en active Active
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