CN219567979U - Dust removal pipeline in front of blast furnace - Google Patents
Dust removal pipeline in front of blast furnace Download PDFInfo
- Publication number
- CN219567979U CN219567979U CN202320348073.4U CN202320348073U CN219567979U CN 219567979 U CN219567979 U CN 219567979U CN 202320348073 U CN202320348073 U CN 202320348073U CN 219567979 U CN219567979 U CN 219567979U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- dust
- cooling
- blast furnace
- flue gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 title claims abstract description 70
- 238000001816 cooling Methods 0.000 claims abstract description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003546 flue gas Substances 0.000 claims abstract description 25
- 239000003500 flue dust Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000002146 bilateral effect Effects 0.000 claims description 5
- 206010053615 Thermal burn Diseases 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000000779 smoke Substances 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a dust removing pipeline in front of a blast furnace, which comprises the following components: the middle part of the pipeline is provided with a reducing part, and the inner diameter of the reducing part is larger than that of the pipeline; a cooling portion provided in the diameter-changing portion; the ash discharge pipeline is arranged at the bottom of the pipeline; when the dust-containing flue gas enters the pipeline and impacts the cooling part, the cooling part cools the dust-containing flue gas, and dust is deposited at the bottom of the pipeline and discharged from the ash discharge pipeline; the dust collector effectively solves the problem that the dust-containing air flow with high temperature and high flow rate is sucked into the dust collector to burn and scald a filter bag to cause damage and cause discharge exceeding standard, on one hand, dust deposition in a pipeline is avoided, and the service life of the pipeline is prolonged.
Description
Technical Field
The utility model relates to the field of dust removal in front of a blast furnace, in particular to a dust removal pipeline in front of the blast furnace.
Background
The blast furnace cast house is one of the main pollution sources in the production of iron and steel enterprises, and is the key point and difficulty of the environmental protection work of metallurgical enterprises; when the blast furnace is tapped, a tap hole, a skimming tool, an iron hook, a slag runner, a swing tap and a hot metal ladle are main parts for generating smoke dust, and the dust is mainly extracted into the dust remover by a negative pressure fan matched with the dust remover at present for purification, and is discharged through a chimney at a high point after purification, and the discharge concentration can reach the national ultra-low discharge standard.
With the increasing enhancement of environmental protection work, in order to ensure no sudden emission accident, the suction force of a ventilation and dust removal matched fan of a cast house of a steel enterprise is increased; because the blast furnace has large smoke generation amount at the iron opening, the iron blocking opening and the later iron tapping stage, and because the dust removing main pipe has elbow resistance, a large amount of dust is easily deposited at the bottom of the pipeline due to the action of gravity and resistance after being sucked into the pipeline, the pipeline is blocked, the air flow is not smooth, and the dust removing efficiency is influenced; in addition, during tapping, because the pressure in the furnace is relatively high, the molten iron is sprayed out along the direction of the main iron runner, the generated smoke dust has high flow velocity in the horizontal direction, high-temperature molten iron flushes castable in the main iron runner at a drop point and reacts with air at the same time, a large amount of smoke dust with high temperature, high flow velocity, large diffusion area and small particle size is generated, and the smoke dust is captured by the top dust hood and enters the dust remover through the dust removing main pipe, so that the filter bag is easy to burn and scald to cause damage, and the smoke dust emission exceeds standard;
in order to solve the above problems, it is necessary to design a device capable of reducing the flow rate and temperature of dust and preventing the blockage of the pipeline.
Disclosure of Invention
The utility model aims to solve the technical problems that: how to prevent the pipeline from being blocked.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model relates to a dust removing pipeline in front of a blast furnace, which comprises the following components: the middle part of the pipeline is provided with a reducing part, and the inner diameter of the reducing part is larger than that of the pipeline; a cooling portion provided in the diameter-changing portion; the ash discharge pipeline is arranged at the bottom of the pipeline; when the dust-containing flue gas enters the pipeline and impacts the cooling part, the cooling part cools the dust-containing flue gas, and dust is deposited at the bottom of the pipeline and discharged from the ash discharge pipeline;
in the scheme, the middle part of the pipeline is provided with the variable diameter part, the inner diameter of the variable diameter part is larger than that of the pipeline, and the inner diameter is gradually increased and the flow rate of the flue gas is correspondingly slowed down in the process that the flue gas enters the variable diameter part from the pipeline; the dust-containing flue gas enters the pipeline, impacts the cooling part, and contacts the cooling part when the speed of the dust-containing flue gas is reduced, the cooled dust with smaller mass enters the dust remover along with the pipeline after the flue gas flows through the reducing, and the larger mass is deposited at the bottom of the reducing pipeline under the action of gravity and is discharged through the ash discharge pipeline, and is discharged periodically through the ash suction tank truck.
In order to specifically explain the structure of the cooling part, the present utility model adopts the cooling part comprising: a plate body having an impact surface perpendicular to the pipe axis; the fixing plate is used for fixedly connecting the plate body with the inner wall of the pipeline; the cooling channel is arranged in the plate body and is provided with a water inlet and a water return port;
the flue gas can strike the striking surface, a cooling channel is arranged in the plate body, water is injected into the cooling channel to cool the plate body, and then the flue gas striking the striking surface is cooled;
a plurality of fixing plates are arranged on the periphery of the plate body and connected with the inner wall of the pipe body, and the fixing plates are of surface chromium plating design and have high wear resistance.
In order to facilitate the collection of the dust with large quality, the utility model adopts the V-shaped groove arranged at the bottom of the pipeline; the bottom of the V-shaped groove is provided with an ash discharge pipeline;
in this scheme, can drop below the impact face after the dust striking of big quality, V type groove is seted up on the pipeline to be located the impact face below, the dust just can collect in V type inslot like this.
In order to facilitate the periodic dust discharge, the utility model adopts the ash discharge pipeline provided with a valve;
the periodic discharge of dust is achieved by means of an on-off valve.
In order to illustrate the concrete structure of the cooling channel, the utility model adopts a bilateral symmetry structure that the cooling channel is a vertical channel and a horizontal channel are sequentially connected;
like this, the cooling water gets into from the water inlet, discharges from the return water mouth, and the cooling channel is by perpendicular passageway, horizontal channel connects gradually bilateral symmetry structure that forms, lets in the cooling water in the plate body like this and can guarantee the cooling efficiency high efficiency of plate body.
The utility model has the beneficial effects that: the utility model relates to a dust removing pipeline in front of a blast furnace, which is characterized in that dust-containing flue gas with high temperature and high flow rate is sucked into the pipeline by a dust removing cover on the top of a tap hole, when flowing through a reducing part, the dust-containing flue gas is diffused due to the increase of pipe diameter, the flow rate is reduced, the airflow of a dust-containing main body part is impacted on an impact surface of a plate body, and the temperature of the flue gas is reduced to a proper range after cold-heat exchange; meanwhile, the cooled dust with smaller mass enters the dust remover along with the air flow through the reducing pipeline, and the larger mass is deposited at the V-shaped groove at the bottom of the pipeline under the action of gravity and is discharged through the dust suction tank truck at regular intervals; the dust collector effectively solves the problem that the dust-containing air flow with high temperature and high flow rate is sucked into the dust collector to burn and scald a filter bag to cause damage and cause discharge exceeding standard, on one hand, dust deposition in a pipeline is avoided, and the service life of the pipeline is prolonged.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic structural view of the cooling portion;
in the figure: 1-pipeline, 2-reducing portion, 3-cooling portion, 4-ash discharge pipeline, 5-plate body, 6-impact surface, 7-fixed plate, 8-water inlet, 9-water return port, 10-V type groove, 11-valve, 12-vertical channel, 13-horizontal channel.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
As shown in fig. 1, the present utility model is a blast furnace front dust removing pipe comprising: a pipe 1, wherein a reducing part 2 is arranged at the middle part of the pipe 1, and the inner diameter of the reducing part 2 is larger than the inner diameter of the pipe 1; a cooling portion 3 provided in the diameter-changing portion 2; an ash discharge pipeline 4 which is arranged at the bottom of the pipeline 1; when dust-containing flue gas enters the pipeline 1 and impacts the cooling part 2, the cooling part 2 cools the dust-containing flue gas, and dust is deposited at the bottom of the pipeline 1 and discharged from the ash discharge pipeline 4;
in the scheme, the middle part of the pipeline is provided with the variable diameter part, the inner diameter of the variable diameter part is larger than that of the pipeline, and the inner diameter is gradually increased and the flow rate of the flue gas is correspondingly slowed down in the process that the flue gas enters the variable diameter part from the pipeline; the dust-containing flue gas enters the pipeline, impacts the cooling part, and contacts the cooling part when the speed of the dust-containing flue gas is reduced, the cooled dust with smaller mass enters the dust remover along with the pipeline after the flue gas flows through the reducing, and the larger mass is deposited at the bottom of the reducing pipeline under the action of gravity and is discharged through the ash discharge pipeline, and is discharged periodically through the ash suction tank truck.
As shown in fig. 2, in order to specifically explain the structure of the cooling portion, the present utility model adopts the cooling portion including: a plate 5 having an impact surface 6 perpendicular to the axis of the pipe 1; the fixed plate 7 is used for fixedly connecting the plate body 5 with the inner wall of the pipeline 1; the cooling channel is arranged in the plate body 5 and is provided with a water inlet 8 and a water return port 9;
the flue gas can strike the striking surface, a cooling channel is arranged in the plate body, water is injected into the cooling channel to cool the plate body, and then the flue gas striking the striking surface is cooled;
a plurality of fixing plates are arranged on the periphery of the plate body and connected with the inner wall of the pipe body, and the fixing plates are of surface chromium plating design and have high wear resistance.
As shown in fig. 1, in order to facilitate the collection of dust with large quality, the utility model adopts a V-shaped groove 10 arranged at the bottom of the pipeline 1; the bottom of the V-shaped groove 10 is provided with an ash discharge pipeline 4;
in this scheme, can drop below the impact face after the dust striking of big quality, V type groove is seted up on the pipeline to be located the impact face below, the dust just can collect in V type inslot like this.
As shown in fig. 1, in order to facilitate the periodic dust discharge, the utility model adopts the ash discharge pipeline 4 provided with a valve 11;
the periodic discharge of dust is achieved by means of an on-off valve.
As shown in fig. 2, in order to illustrate a specific structure of the cooling channel, the cooling channel is a bilateral symmetry structure in which a vertical channel 12 and a horizontal channel 13 are sequentially connected;
like this, the cooling water gets into from the water inlet, discharges from the return water mouth, and the cooling channel is by perpendicular passageway, horizontal channel connects gradually bilateral symmetry structure that forms, lets in the cooling water in the plate body like this and can guarantee the cooling efficiency high efficiency of plate body.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (5)
1. A blast furnace stokehold dust removal pipeline, characterized by comprising:
the middle part of the pipeline is provided with a reducing part, and the inner diameter of the reducing part is larger than that of the pipeline;
a cooling portion provided in the diameter-changing portion;
the ash discharge pipeline is arranged at the bottom of the pipeline;
when the dust-containing flue gas enters the pipeline and impacts the cooling part, the cooling part cools the dust-containing flue gas, and dust is deposited at the bottom of the pipeline and discharged from the ash discharge pipeline.
2. A blast furnace stokehold dust removal pipe as set forth in claim 1, wherein said cooling section includes:
a plate body having an impact surface perpendicular to the pipe axis;
the fixing plate is used for fixedly connecting the plate body with the inner wall of the pipeline;
the cooling channel is arranged in the plate body and is provided with a water inlet and a water return port.
3. The blast furnace stokehold dust removal pipeline according to claim 1, wherein a V-shaped groove is formed in the bottom of the pipeline;
the ash discharge pipeline is arranged at the bottom of the V-shaped groove.
4. A blast furnace dust removal pipeline according to claim 1, wherein a valve is arranged on the ash discharge pipeline.
5. The blast furnace front dust removal pipeline according to claim 2, wherein the cooling channel is of a bilateral symmetry structure in which a vertical channel and a horizontal channel are sequentially connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348073.4U CN219567979U (en) | 2023-02-28 | 2023-02-28 | Dust removal pipeline in front of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320348073.4U CN219567979U (en) | 2023-02-28 | 2023-02-28 | Dust removal pipeline in front of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219567979U true CN219567979U (en) | 2023-08-22 |
Family
ID=87664606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320348073.4U Active CN219567979U (en) | 2023-02-28 | 2023-02-28 | Dust removal pipeline in front of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219567979U (en) |
-
2023
- 2023-02-28 CN CN202320348073.4U patent/CN219567979U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |