CN214694257U - Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket - Google Patents
Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket Download PDFInfo
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- CN214694257U CN214694257U CN202120624645.8U CN202120624645U CN214694257U CN 214694257 U CN214694257 U CN 214694257U CN 202120624645 U CN202120624645 U CN 202120624645U CN 214694257 U CN214694257 U CN 214694257U
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Abstract
A dust removal cyclone dust collector for coal gas discharged from a charging bucket at the top of a blast furnace belongs to the technical field of industrial gas dust removal. The device comprises a central tube, an upper sealing plate, a cylinder body, a conical section, a manhole, an ash discharge port, a tangential inlet pipeline, a support and a baffle; the center tube passes upper seal plate middle part trompil and is connected with it, the upper seal plate is down along being connected with the barrel on, the barrel is down along being connected with the conic section is last along, the lower part is equipped with the support in the barrel, the conic section side is equipped with the inspection manhole, the lower extreme is equipped with the ash discharge mouth, the tangential inlet pipeline is connected with the barrel along barrel upper portion tangential direction, after the tangential inlet pipeline got into the barrel, be close to center one side and set up the baffle, the baffle forms inlet channel with the tangential inlet pipeline together, the upper seal plate is oval head. The dust removal device has the advantages of long service life, low equipment maintenance amount, convenience in installation, strong adaptability and good dust removal effect.
Description
Technical Field
The utility model belongs to the technical field of industrial gas removes dust, in particular to cyclone that carries out gas-solid separation to blast furnace top material jar diffused coal gas.
Background
In the charging process of the blast furnace, the gas pressure in the top charging tank of the blast furnace is periodically circulated (for 5-7 minutes) between a high-pressure state and a normal-pressure state. When the gas in the charging bucket is diffused, the raw gas containing dust is directly diffused into the air after passing through a cyclone dust collector and a silencer, or the gas is recycled after being dedusted by a cloth bag. The amount of dust discharged to the atmosphere can be reduced by arranging the blast furnace top cyclone dust collector, and the dust content in the coal gas before and after the cyclone dust collector can be 20-30g/m3Reduced to 30mg/m3Meanwhile, the arrangement of the furnace top cyclone dust collector reduces the ash load of a silencer at the tail end of a diffusing pipeline or a bag-type dust collector, and prolongs the service life of corresponding equipment.
Traditional cyclone, medium operating mode is stable, and the gas entrance generally adopts square cut structure (rectangle interface), and the shrouding generally adopts the flat board form to weld with barrel and center tube on the barrel. In the process of dust removal of the diffused coal gas of the blast furnace top charging bucket, particularly when the coal gas needs to be recovered, the cyclone dust collector needs to constantly carry out pressure equalizing and pressure discharging, the internal pressure is changed alternately between 0 MPa and 0.3MPa, the dust collector bears the effect of alternating stress, the stress condition is more complex, and the requirement on the structural strength of the shell is higher. In the actual production process, cyclone's inlet tube and barrel junction fracture problem frequently occur, and the problem of fracture also easily appears in fixed wear-resisting welt's trompil department, barrel upper end and shrouding edge junction department and shrouding and center tube junction on the barrel, above problem for blast furnace safety, stable production bring adverse effect, increased the equipment maintenance cost.
Disclosure of Invention
The utility model aims to provide a dust removal cyclone for the coal gas discharged from a charging bucket at the top of a blast furnace, which solves the problems of cracking and the like at the joint of an inlet pipe and a barrel body of the cyclone; the dust removal device has the advantages of long service life, low maintenance amount, convenience in installation, strong adaptability and good dust removal effect.
In order to achieve the purpose, the utility model adopts the following specific technical proposal:
the utility model comprises a central tube 1, an upper sealing plate 2, a barrel 3, a conical section 4, a manhole 5, an ash discharge port 6, a tangential inlet pipeline 7, a support 8 and a baffle 9; center tube 1 passes 2 middle part trompils of last shrouding and is connected with it, go up shrouding 2 down along being connected with barrel 3 is last along being connected with conic section 4, barrel 3 middle and lower part is equipped with support 8, conic section 4 side is equipped with maintenance manhole 5, the lower extreme is equipped with dust discharging port 6, tangential inlet pipeline 7 is connected with barrel 3 along 3 upper portion tangential direction of barrel, tangential inlet pipeline 7 gets into behind barrel 3, be close to center one side and set up baffle 9, baffle 9 is the dull and stereotyped part of an ellipse, the straight line limit of baffle 9 flushes with the end that tangential inlet pipeline 7 gos deep into barrel 3, the pitch arc edge of baffle 9 is connected with the edge that tangential inlet pipeline 7 was formed by baffle 9 along the vertical direction cutting, and form air inlet channel together with tangential inlet pipeline 7.
The section of the tangential inlet pipeline 7 is circular, and compared with a rectangular section structure, the tangential inlet pipeline can reduce stress concentration and avoid cracking of a welding seam under an alternating load working condition.
The support 8 is a full-circle skirt seat type structure, and the support can rotate 360 degrees after being supported on a steel structure of an existing platform or a support is arranged, so that the inlet pipe is smoothly connected with an existing pressure-equalizing diffusing pipe, and elbows are reduced.
The baffle 9 can guide the airflow to the inner wall of the cylinder 3, which is beneficial to improving the dust removal efficiency of the cyclone dust collector.
The upper sealing plate 2 is an elliptical sealing head.
And anchoring hooks are welded on the inner surfaces of the upper sealing plate 2, the cylinder 3 and the conical section 4, and wear-resistant spray paint is sprayed.
The utility model has the advantages that:
the utility model discloses an thereby adopt the last shrouding of the inlet pipeline of circular cross section, oval head form and adopt wear-resisting spray coating to replace wear-resisting welt and avoid the casing trompil, make cyclone structural strength obtain showing and improve, can satisfy furnace roof material jar and diffuse coal gas dust removal operating mode requirement, the dust removal effect of stabilising arrangement, increase of service life reduces the plant maintenance volume.
Drawings
Fig. 1 is a schematic structural diagram of the present invention. The device comprises a central pipe 1, an upper sealing plate 2, a cylinder 3, a conical section 4, a manhole 5, an ash discharge port 6, a tangential inlet pipeline 7, a support 8 and a baffle 9.
Fig. 2 is a schematic view of the inlet structure of the dust collector of the present invention.
Detailed Description
The utility model discloses a: the device comprises a central tube 1, an upper sealing plate 2, a cylinder 3, a conical section 4, a manhole 5, an ash discharge port 6, a tangential inlet pipeline 7, a support 8 and a baffle 9; the central tube 1 passes through the middle part of the upper seal plate 2 and is connected with the upper edge of the cylinder 3, the lower edge of the cylinder 3 is connected with the upper edge of the conical section 4, the middle lower part of the cylinder 3 is provided with a support 8, the side surface of the conical section 4 is provided with an inspection manhole 5, the lower end is provided with an ash discharge port 6, the tangential inlet pipeline 7 is connected with the cylinder 3 along the tangential direction of the upper part of the cylinder 3, after the tangential inlet pipeline 7 enters the cylinder 3, one side close to the center is provided with a baffle 9, the baffle 9 is a part of an elliptical flat plate, the straight edge of the baffle 9 is flush with the end of the tangential inlet pipeline 7 which extends into the cylinder 3, the arc edge of the baffle 9 is connected with the edge formed by the tangential inlet pipeline 7 which is cut along the vertical direction by the baffle 9 and forms an air inlet channel together with the tangential inlet pipeline 7, the section of the tangential inlet pipeline 7 is circular, the upper seal plate 2 is an elliptical seal head, the inner surfaces of the upper seal plate 2, the cylinder 3 and the conical section 4 are welded with anchoring hooks, and spraying the wear-resistant spray paint.
Practice proves that the dust content in the coal gas before and after dust removal can be 30g/m by adopting the cyclone dust collector3Reduced to 30mg/m3In the aspects of strength and abrasion, the cyclone dust collector has stable structure, can bear the action of high pressure and high impact during the instantaneous diffusion of the blast furnace, and can completely meet the dust removal requirement of the diffused gas of the charging bucket at the top of the blast furnace.
Claims (5)
1. A dust removal cyclone dust collector for coal gas discharged from a charging bucket at the top of a blast furnace is characterized by comprising a central tube (1), an upper sealing plate (2), a cylinder body (3), a conical section (4), a manhole (5), an ash discharge port (6), a tangential inlet pipeline (7), a support (8) and a baffle (9); the central tube (1) penetrates through the middle part of the upper sealing plate (2) and is connected with the upper edge of the upper sealing plate (2), the lower edge of the upper sealing plate (2) is connected with the upper edge of the barrel body (3), the lower edge of the barrel body (3) is connected with the upper edge of the conical section (4), a support (8) is arranged at the middle lower part of the barrel body (3), an inspection manhole (5) is arranged on the side surface of the conical section (4), an ash discharge port (6) is arranged at the lower end of the lower sealing plate, the tangential inlet pipeline (7) is connected with the barrel body (3) along the tangential direction of the upper part of the barrel body (3), a baffle plate (9) is arranged at one side close to the center after the tangential inlet pipeline (7) enters the barrel body (3), the baffle plate (9) is a part of an oval flat plate, the straight line edge of the baffle plate (9) is flush with the end of the tangential inlet pipeline (7) deep into the barrel body (3), the arc line edge of the baffle plate (9) is connected with the edge formed by cutting of the tangential inlet pipeline (7) along the vertical direction, and forms an inlet channel together with the tangential inlet duct (7).
2. The blast furnace top bucket blow-off gas dust removal cyclone of claim 1, wherein the tangential inlet pipe (7) has a circular cross-section.
3. The dust removal cyclone for the diffused gas of the blast furnace top bucket according to claim 1 is characterized in that the support (8) is of a full-circle skirt seat type structure.
4. The dust removal cyclone for the diffused gas of the blast furnace top bucket according to claim 1, wherein the upper sealing plate (2) is an elliptical sealing head.
5. The dust removing cyclone dust collector for the diffused gas of the blast furnace top bucket according to the claim 1 is characterized in that the inner surfaces of the upper sealing plate (2), the cylinder body (3) and the conical section (4) are welded with anchoring hooks and sprayed with wear-resistant spray paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120624645.8U CN214694257U (en) | 2021-03-26 | 2021-03-26 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120624645.8U CN214694257U (en) | 2021-03-26 | 2021-03-26 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
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| CN214694257U true CN214694257U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120624645.8U Active CN214694257U (en) | 2021-03-26 | 2021-03-26 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151627A (en) * | 2021-03-26 | 2021-07-23 | 北京首钢国际工程技术有限公司 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
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2021
- 2021-03-26 CN CN202120624645.8U patent/CN214694257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151627A (en) * | 2021-03-26 | 2021-07-23 | 北京首钢国际工程技术有限公司 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
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