CN113151627A - 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
- Publication number
- CN113151627A CN113151627A CN202110330014.XA CN202110330014A CN113151627A CN 113151627 A CN113151627 A CN 113151627A CN 202110330014 A CN202110330014 A CN 202110330014A CN 113151627 A CN113151627 A CN 113151627A
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- cylinder
- blast furnace
- furnace top
- dust removal
- baffle
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- 239000000428 dust Substances 0.000 title claims abstract description 48
- 239000003034 coal gas Substances 0.000 title description 8
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000007689 inspection Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims abstract 7
- 238000005336 cracking Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cyclones (AREA)
Abstract
一种高炉炉顶料罐放散煤气除尘旋风除尘器，属于工业气体除尘技术领域。包括中心管、上封板、筒体、锥段、人孔、卸灰口、切向入口管道、支座、挡板；中心管穿过上封板中部开孔并与之连接，上封板下沿与筒体上沿连接，筒体下沿与锥段上沿连接，筒体中下部设有支座，锥段侧面设有检修人孔，下端设有卸灰口，切向入口管道沿筒体上部切线方向与筒体连接，切向入口管道进入筒体后，靠近中心一侧设置挡板，挡板与切向入口管道一起形成进气通道，上封板为椭圆封头。优点在于，使用寿命长，设备维护量低、安装方便、适应性强、除尘效果好。
The utility model relates to a cyclone dust collector for removing gas from a blast furnace top material tank, which belongs to the technical field of industrial gas dust removal. Including the central pipe, the upper sealing plate, the cylinder, the cone section, the manhole, the ash discharge port, the tangential inlet pipe, the support, and the baffle; The lower edge is connected with the upper edge of the cylinder body, the lower edge of the cylinder body is connected with the upper edge of the cone section, the middle and lower part of the cylinder body is provided with a support, the side surface of the cone section is provided with an inspection manhole, the lower end is provided with an ash discharge port, and the tangential inlet pipeline is The tangential direction of the upper part of the cylinder is connected to the cylinder. After the tangential inlet pipe enters the cylinder, a baffle is set on the side near the center. The baffle and the tangential inlet pipe together form an air intake channel. The advantages are long service life, low equipment maintenance, convenient installation, strong adaptability and good dust removal effect.
Description
Technical Field
The invention belongs to the technical field of industrial gas dust removal, and particularly relates to a cyclone dust collector for gas-solid separation of coal gas diffused from a charging bucket at the top of a blast furnace.
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 invention aims to provide a dust removal cyclone dust collector for discharging coal gas 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 of the cyclone dust collector; the dust remover has the advantages of long service life, low maintenance amount, convenient installation, strong adaptability and good dust removing effect.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
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; 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 invention has the advantages that:
according to the invention, the inlet pipeline with the circular cross section, the upper sealing plate in the form of the elliptical head and the wear-resistant lining plate are replaced by the wear-resistant spray coating, so that the shell is prevented from being perforated, the structural strength of the cyclone dust collector is obviously improved, the requirement of the working condition of the furnace top charging bucket for gas dust removal can be met, the dust removal effect of equipment is stabilized, the service life is prolonged, and the maintenance amount of the equipment is reduced.
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 invention comprises the following steps: 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 (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330014.XA CN113151627A (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 |
|---|---|---|---|
| CN202110330014.XA CN113151627A (en) | 2021-03-26 | 2021-03-26 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113151627A true CN113151627A (en) | 2021-07-23 |
Family
ID=76885297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110330014.XA Pending CN113151627A (en) | 2021-03-26 | 2021-03-26 | Dust removal cyclone dust collector for coal gas discharged from blast furnace top charging bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113151627A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120012006A1 (en) * | 2010-07-13 | 2012-01-19 | Peerless Mfg. Co. | Pocketed Cyclonic Separator |
| US20180056307A1 (en) * | 2015-03-12 | 2018-03-01 | Valmet Ab | Cyclone separator arrangement and method |
| CN209835700U (en) * | 2018-12-30 | 2019-12-24 | 中海油能源发展股份有限公司安全环保分公司 | A swirl air flotation device with adjustable swirl intensity |
| CN214694257U (en) * | 2021-03-26 | 2021-11-12 | 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 |
-
2021
- 2021-03-26 CN CN202110330014.XA patent/CN113151627A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120012006A1 (en) * | 2010-07-13 | 2012-01-19 | Peerless Mfg. Co. | Pocketed Cyclonic Separator |
| US20180056307A1 (en) * | 2015-03-12 | 2018-03-01 | Valmet Ab | Cyclone separator arrangement and method |
| CN209835700U (en) * | 2018-12-30 | 2019-12-24 | 中海油能源发展股份有限公司安全环保分公司 | A swirl air flotation device with adjustable swirl intensity |
| CN214694257U (en) * | 2021-03-26 | 2021-11-12 | 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 |
Non-Patent Citations (4)
| Title |
|---|
| 伍爱友等主编: "《安全工程学》", 31 August 2016, 中国矿业大学出版社, pages: 366 * |
| 刘景良主编: "《大气污染控制工程》", 31 January 2012, 中国轻工业出版社, pages: 107 * |
| 王志昌主编: "《输气管道工程》", 30 April 1997, 石油工业出版社, pages: 53 - 54 * |
| 邬纫云等编: "《煤炭气化与型煤厂设计》", 31 May 1993, 中国矿业大学出版社, pages: 257 * |
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Application publication date: 20210723 |