CN113082880A - Offline installation and butt joint method for primary dust removal metal filter bag dust remover of converter - Google Patents
Offline installation and butt joint method for primary dust removal metal filter bag dust remover of converter Download PDFInfo
- Publication number
- CN113082880A CN113082880A CN202110439415.9A CN202110439415A CN113082880A CN 113082880 A CN113082880 A CN 113082880A CN 202110439415 A CN202110439415 A CN 202110439415A CN 113082880 A CN113082880 A CN 113082880A
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- filter bag
- metal filter
- pipeline
- dust remover
- manhole
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- 239000000428 dust Substances 0.000 title claims abstract description 95
- 239000002184 metal Substances 0.000 title claims abstract description 74
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000009434 installation Methods 0.000 title claims abstract description 33
- 210000001503 joint Anatomy 0.000 title claims abstract description 30
- 239000002699 waste material Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 20
- 238000010276 construction Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 61
- 239000000779 smoke Substances 0.000 description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/001—Means for connecting filter housings to supports
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
Abstract
The invention provides an off-line installation and butt joint method for a primary dust removal metal filter bag dust remover of a converter, which comprises the steps of installing an air inlet pipeline between an air inlet of the metal filter bag dust remover and a raw gas pipeline; an exhaust pipeline is arranged between the air outlet of the metal filter bag dust remover and the diffusing chimney; a manhole A is arranged on the raw gas pipeline, and a blind plate A which is connected with the raw gas pipeline in a sealing way is arranged in the raw gas pipeline; a through hole A is formed in the raw gas pipeline; a manhole B is arranged on the exhaust pipeline, and a through hole B is arranged on the diffusing chimney to communicate the exhaust pipeline with the diffusing chimney; and taking the waste residues out of the manhole A and the manhole B respectively, and then sealing the manhole A and the manhole B by using the hole cover A and the hole cover B respectively to finish installation and butt joint. By using the off-line installation and butt joint method, installation and butt joint work can be realized while construction is carried out, butt joint can be completed within 8 hours, the butt joint time is effectively shortened, compared with the method in the prior art, the method shortens 40 hours, and the converter shutdown time is reduced.
Description
Technical Field
The invention relates to the technical field of installation of metal filter bag dust collectors, in particular to an off-line installation butt joint method for a metal filter bag dust collector for primary dust removal of a converter.
Background
The metal filter bag dust remover and the LT dry dust removal are combined to realize that the ultralow emission of the primary dust removal flue gas of the converter is an important mode for the primary flue gas treatment of the converter, and by the mode, the low smoke content in the gas discharged from the emission chimney can be ensured, and the environmental pollution is avoided.
In the LT dry dedusting system, the diffusing chimney is connected with the raw gas pipeline, and the metal filter bag deduster is arranged between the diffusing chimney and the raw gas pipeline to further process the primary dedusting smoke and ensure that the smoke exhausted from the diffusing chimney meets the regulations.
At present, when a metal filter bag dust remover is connected with an LT dry dust removal system, a raw gas pipeline is disconnected with a diffusing chimney, an exhaust pipeline of the metal filter bag dust remover is connected with an air inlet of the diffusing chimney, and due to the fact that the number of pipelines in the LT dry dust removal system on site is large, when the exhaust pipeline of the metal filter bag dust remover is connected with the air inlet of the diffusing chimney, a plurality of elbows are needed to be connected, however, too many elbows are used, a plurality of dead angle areas of flue gas flow are formed, system resistance is improved, and a fan station of the LT dry dust removal system cannot meet the air pressure requirement of the metal filter bag dust remover, and system operation is influenced; when the opening is connected with the exhaust pipeline of the metal filter bag dust remover, the diameter of the pipeline of the metal filter bag dust remover is not matched with the outer diameter of the pipe of the diffusing chimney, so that the exhaust pipeline of the metal filter bag dust remover and the opening of the diffusing chimney are difficult to be tightly jointed, an iron plate and the like are required to be welded and plugged, and long time is consumed when the inside and the outside are respectively connected in a full-welding manner; in addition, when the raw gas pipeline is connected with the air inlet pipeline of the metal filter bag dust remover, the raw gas pipeline and the air inlet pipeline of the metal filter bag dust remover need to be connected through a plurality of elbows so as to meet the construction requirements of site conditions; the increase of the number of the elbows, the sealing connection between the gas inlet pipeline of the metal filter bag dust collector and the raw gas pipeline and the sealing connection between the gas exhaust pipeline of the metal filter bag dust collector and the diffusing chimney all need to consume a large amount of time (consuming more than 48 hours), and the increase of the number of the elbows improves the pressure loss of the smoke circulation, so that the furnace shutdown time is long, and the output and the benefit of the converter are influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the offline installation and butt joint method for the once dust removal metal filter bag dust remover of the converter, and by using the offline installation and butt joint method, the installation and butt joint work and the construction can be realized simultaneously, the butt joint can be completed within 8 hours, the butt joint time is effectively shortened, compared with the method in the prior art, the butt joint time is shortened by 40 hours, and the converter shutdown time is reduced.
The technical scheme of the invention is as follows:
an off-line installation and butt joint method for a converter primary dust removal metal filter bag dust remover comprises the following steps:
(1) an air inlet pipeline is arranged between an air inlet of the metal filter bag dust remover and a raw gas pipeline; an exhaust pipeline is arranged between the air outlet of the metal filter bag dust remover and the diffusing chimney;
(2) a manhole A is arranged on the raw gas pipeline and enters the raw gas pipeline through the manhole A; the method comprises the following steps that a blind plate A is installed in a raw gas pipeline and is in sealing connection with the inner wall of the raw gas pipeline in a welding mode, so that smoke in the raw gas pipeline is prevented from directly entering a diffusing chimney; a through hole A is formed in the raw gas pipeline and is positioned at the joint of the raw gas pipeline and the gas inlet pipeline, so that the flue gas in the raw gas pipeline enters the metal filter bag dust remover;
(3) arranging a manhole B on the exhaust pipeline, entering the exhaust pipeline through the manhole B, arranging a through hole B on the diffusing chimney, wherein the through hole B is positioned at the joint of the diffusing chimney and the exhaust pipeline so as to communicate the exhaust pipeline with the diffusing chimney, and allowing the flue gas treated by the metal filter bag dust remover to enter the diffusing chimney for discharging;
(4) and taking the waste residues generated by the opening of the through hole A and the wastes generated by welding the blind plate A out of the manhole A, taking the waste residues generated by the opening of the through hole B out of the manhole B, and sealing the manhole A and the manhole B by using the manhole cover A and the manhole cover B respectively to finish off-line installation and butt joint of the metal filter bag dust remover.
According to the invention, the gas inlet pipeline is connected with the raw gas pipeline, and the through hole A is formed, so that the phenomena of bending, twisting and the like of the gas inlet pipeline for matching the position of the through hole A can be avoided, and the flow of smoke is smoother; the exhaust pipeline is connected with the diffusing chimney firstly, and then the through hole B is formed, so that the phenomena of bending, twisting and the like of the exhaust pipeline can be avoided, the smoke has the characteristics of smooth air inlet and outlet in the metal filter bag dust remover, and the pipeline obstruction is reduced.
Preferably, the blind plate A is close to the diffusing chimney, and plays a role in reinforcing and supporting the diffusing chimney.
Preferably, a blind plate B is further installed in the raw coke oven gas pipeline, and the blind plate B is in sealing connection with the inner wall of the raw coke oven gas pipeline in a welding mode; the blind plate B is close to the through hole A, so that a smoke dead zone generated between the blind plate A and the through hole A due to smoke backflow in the raw gas pipeline is avoided.
Preferably, after the blind plate A and the blind plate B are installed and the through hole A is formed, the manhole A and the hole cover A are welded in a sealing mode; and after the through hole B is formed, the manhole B and the hole cover B are sealed and welded in a welding mode.
Preferably, the diameter of the air inlet pipeline is 2020mm, the diameters of the blind plate A and the blind plate B are 2020mm, and the thickness is 10 mm.
Preferably, for strengthening the steadiness of admission line in the use, install support A below the admission line, support A's bottom end is fixed subaerial, and support A's top is fixed with arc frame A, and the admission line is located arc frame A's the higher authority.
Preferably, for strengthening the steadiness of exhaust duct in the use, be fixed with support B on the lateral surface of metal filter bag dust remover, support B is formed by horizontal pole and montant welding, horizontal pole and metal filter bag dust remover fixed connection, and the top of montant is fixed with arc frame B, and exhaust duct is located arc frame B's the higher authority.
Preferably, in order to further improve the connection stability of the support B and the metal filter bag dust remover, an inclined rod which forms an angle of 45 degrees with the cross rod is fixed below the cross rod, and the inclined rod is fixedly connected with the metal filter bag dust remover.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the mode that the air inlet pipeline and the exhaust pipeline are installed firstly and then the through hole A and the through hole B are formed is adopted, so that the communication position of the air inlet pipeline and the raw gas pipeline is matched, and the communication position of the exhaust pipeline and the diffusing chimney is matched, so that primary flue gas of the converter enters the metal filter bag dust remover from the raw gas pipeline and enters the diffusing chimney from the metal filter bag dust remover more smoothly, flue gas dead corners are avoided, and the flue gas treatment is smoother; meanwhile, the operation that the exhaust pipeline and the air inlet pipeline need to be rectified, bent and the like due to the fact that the air outlet is connected with the smoke inlet of the diffusing chimney and the air inlet is connected with the smoke outlet of the raw gas pipeline in the conventional installation mode is avoided, and the operation time is saved.
(2) According to the invention, the operations of installing the air inlet pipeline and the exhaust pipeline, forming the through hole A and the through hole B on the air inlet pipeline and the exhaust pipeline, and installing the blind plate A and the blind plate B are mutually irrelevant, so that the installation and butt joint time can be effectively saved, the air inlet pipeline and the exhaust pipeline are installed for timing, and the installation and butt joint work can be completed within 8 hours.
(3) The method has the advantages that the process is simple, the operation is easy, the design is reasonable, the installation and the butt joint are completed by using the method, the flue gas can smoothly circulate when the flue gas of the converter is treated, and no flue gas dead zone exists in the treatment process.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the invention after installation and butt joint.
Fig. 2 is a schematic diagram of a prior art mounted structure.
In the figure, 1-metal filter bag dust remover, 2-raw gas pipeline, 3-gas inlet pipeline, 4-diffusing chimney, 5-exhaust pipeline, 6-manhole A, 7-blind plate A, 8-through hole A, 9-blind plate B, 10-bracket A, 11-ground, 12-arc-shaped bracket A, 13-manhole B, 14-through hole B, 1501-cross bar, 1502-vertical bar, 16-arc-shaped bracket B, 17-diagonal bar, 18-elbow and 19-iron plate.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is improved based on the combination of a metal filter bag dust remover and an LT dry dust removal system of the company.
Example 1
As shown in fig. 1, the invention provides an off-line installation and butt joint method for a primary dust removal metal filter bag dust remover of a converter, which comprises the following steps:
(1) an air inlet pipeline 3 is connected to an air inlet of the metal filter bag dust collector 1, and the air inlet pipeline 3 is directly connected with a raw coke oven gas pipeline 2; an air outlet of the metal filter bag dust collector 1 is connected with an exhaust pipeline 5, and the exhaust pipeline 5 is directly connected with a diffusing chimney 4;
the air inlet pipeline 3 and the exhaust pipeline 5 are both straight pipes;
(2) a manhole A6 is arranged on the raw gas pipeline 2, and the raw gas enters the raw gas pipeline 2 through a manhole A6; a blind plate A7 is arranged in the raw gas pipeline 2, and the blind plate A7 is hermetically connected with the inner wall of the raw gas pipeline 2 in a welding mode, so that the smoke in the raw gas pipeline 2 is prevented from directly entering the diffusion chimney 4; a through hole A8 is formed in the raw gas pipeline 2, and the through hole A8 is positioned at the joint of the raw gas pipeline 2 and the gas inlet pipeline 3, so that the flue gas in the raw gas pipeline 2 enters the metal filter bag dust remover 1;
the blind plate A7 is close to the diffusing chimney 4, and plays a role in reinforcing and supporting the diffusing chimney 4;
a blind plate B9 is also arranged in the raw gas pipeline 2, and the blind plate B9 is hermetically connected with the inner wall of the raw gas pipeline 2 in a welding manner; the blind plate B9 is close to the through hole A8, so that a smoke dead zone is prevented from being generated between the blind plate A7 and the through hole A8 due to the backflow of smoke in the raw gas pipeline 2;
after the blind plate A7 and the blind plate B9 are installed and the through hole A8 is formed, the manhole A6 and the hole cover A (not shown in the figure) are sealed and welded in a welding mode;
the diameter of the air inlet pipeline 3 is 2020mm, the diameters of the blind plate A7 and the blind plate B9 are 2020mm, and the thickness is 10 mm;
in order to enhance the stability of the air inlet pipeline 3 in the using process, a support A10 is installed below the air inlet pipeline 3, the bottom end of the support A10 is fixed on the ground 11, an arc-shaped frame A12 is fixed at the top of the support A10, and the air inlet pipeline 3 is positioned above the arc-shaped frame A12;
(3) a manhole B13 is arranged on the exhaust pipeline 5, the exhaust pipeline 5 enters the exhaust pipeline 5 through a manhole B13, a through hole B14 is arranged on the diffusing chimney 4, the through hole B14 is positioned at the joint of the diffusing chimney 4 and the exhaust pipeline 5, the exhaust pipeline 5 is communicated with the diffusing chimney 4, and the smoke treated by the metal filter bag dust remover 1 enters the diffusing chimney 4 to be discharged;
after the through hole B14 is opened, the manhole B13 and the hole cover B (not shown in the figure) are sealed and welded in a welding mode;
in order to enhance the stability of the exhaust pipeline 5 in the using process, a support B is fixed on the outer side surface of the metal filter bag dust remover 1, the support B is formed by welding a cross bar 1501 and a vertical bar 1502, the cross bar 1501 is fixedly connected with the metal filter bag dust remover 1, an arc-shaped frame B16 is fixed at the top end of the vertical bar 1502, and the exhaust pipeline 5 is positioned on an arc-shaped frame B16;
in order to further improve the connection stability of the support B and the metal filter bag dust remover 1, an inclined rod 17 which forms an angle of 45 degrees with the cross rod 1501 is fixed below the cross rod 1501, and the inclined rod 17 is fixedly connected with the metal filter bag dust remover 1;
(4) and taking the waste slag generated by opening the through hole A8 and the waste generated by welding the blind plate A7 out of the manhole A6, taking the waste slag generated by opening the through hole B14 out of the manhole B13, sealing the manhole A6 and the manhole B13 by using the manhole cover A and the manhole cover B respectively, and then finishing the off-line installation and butt joint of the metal filter bag dust remover 1.
In the invention, the gas inlet pipeline 3 is connected with the raw gas pipeline 2, and then the through hole A8 is formed, so that the phenomena of bending, twisting and the like of the gas inlet pipeline 3 for matching the position of the through hole A8 can be avoided, and the flow of smoke is smoother; the exhaust pipeline 5 is connected with the diffusing chimney 4, and the through hole B14 is formed, so that the phenomena of bending, twisting and the like of the exhaust pipeline 5 can be avoided, the flue gas has the characteristic of smooth air inlet and outlet in the metal filter bag dust remover 1, and the pipeline obstruction is reduced.
The specific using process is as follows:
constructors are divided into three groups ABC after the furnace is stopped, 2 people in the group A are responsible for an exhaust pipeline 5 of the metal filter bag dust remover 1, 2 people in the group B are responsible for an air inlet pipeline 3 of the metal filter bag dust remover 1, 2 people in the group C are responsible for plugging a blind plate A7 and a blind plate B9 of the crude gas pipeline 2, and the three groups of the constructors operate simultaneously.
A group of people enter the manhole B13 of the exhaust pipeline 5 of the metal filter bag dust collector 1, the joint of the diffusing chimney 4 and the exhaust pipeline 5 is cut off to form a through hole B14, the cut waste slag is taken out of the manhole B13, the people are withdrawn after the through hole B14 is opened, and the manhole B13 is sealed and welded by using a manhole cover B.
A manhole A6 is arranged at the position of a raw gas pipeline 2, group B personnel and group C personnel enter the raw gas pipeline 2 through a manhole A6, a through hole A8 is arranged on the raw gas pipeline 2, the raw gas pipeline 2 is communicated with an air inlet pipeline 3 of a metal filter bag dust remover 1, cut waste residues are taken out from the manhole A6, and after cutting is finished, the group B personnel are withdrawn; meanwhile, the personnel in the group C install a blind plate A7 in the raw gas pipeline 2, and the blind plate A7 is close to the smoke inlet of the diffusing chimney 4; the blind plate B9 is arranged on one side of the through hole A8, so that a smoke dead angle is avoided between the blind plate A7 and the through hole A8 of the crude gas pipeline 2; after all treatments are completed, group C people are evacuated and manhole a6 is sealed and welded.
By the method, three groups ABC can be operated simultaneously, the butt joint work of the metal bag dust collector 1 can be completed in 8 hours, and the butt joint time can be saved by 40 hours compared with the conventional butt joint method for improving the butt joint time in 48 hours.
The prior art is as follows:
the LT dry dedusting system currently used by the company introduces:
installing a background:
two LT dry dedusting systems are arranged in parallel on site, wherein the diameter of a related diffusing chimney 4 is DN3214mm, the diameter of a crude gas pipeline 2 is DN2020mm, and the crude gas pipeline 2 is connected to the middle lower part of the diffusing chimney 4; the pressure of a fan station of the LT dry dedusting system is 9000 Pa;
the diameters of the air inlet pipeline 3 and the exhaust pipeline 5 of the metal filter bag dust remover 1 are 2020 mm;
based on the installation background, when the metal filter bag dust remover 1 is respectively inserted into the two LT dry dust removal systems, the metal filter bag dust remover 1 needs to be installed outside the two LT dry dust removal systems;
as shown in fig. 2, the current installation method is: disconnecting the diffusing chimney 4 and the raw gas pipeline 2, connecting an exhaust pipeline 5 of the metal filter bag dust collector 1 with an air inlet of the diffusing chimney 4, and turning by using three elbows 18 in the installation process to meet the field installation requirement; when the gas inlet pipeline 3 of the metal filter bag dust remover 1 is connected with the raw gas pipeline 2, two elbows 18 are used;
in addition, because the diameter of the exhaust pipe 5 of the metal filter bag dust collector 1 is different from the pipe diameter of the diffusing chimney 4 greatly, when the exhaust pipe 5 of the metal filter bag dust collector 1 is connected with the air inlet of the diffusing chimney 4, the iron plate 19 is needed to be used for carrying out all-dimensional welding and sealing on the connection part, the phenomenon of gas leakage in the flow of the smoke gas is avoided, and the production safety problem is avoided; in the process of omnibearing welding, the installation butt joint time is prolonged;
in the LT dry dedusting system, the pressure of a fan station is constant, in a new system formed after the addition of the metal filter bag dust remover 1, the pressure loss of the fan is increased by about 300Pa every time one elbow 18 is added, and after the elbows 18 are increased, dead angle areas are increased in the smoke circulation process, so that the treatment effect is deteriorated.
Although the present invention has been described in detail by referring to the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An off-line installation and butt joint method for a metal filter bag dust remover for primary dust removal of a converter is characterized by comprising the following steps:
(1) an air inlet pipeline is arranged between an air inlet of the metal filter bag dust remover and a raw gas pipeline; an exhaust pipeline is arranged between the air outlet of the metal filter bag dust remover and the diffusing chimney;
(2) a manhole A is arranged on the raw gas pipeline, a blind plate A is arranged in the raw gas pipeline, and the blind plate A is hermetically connected with the inner wall of the raw gas pipeline in a welding mode; a through hole A is formed in the raw gas pipeline and is positioned at the joint of the raw gas pipeline and the gas inlet pipeline;
(3) a manhole B is arranged on the exhaust pipeline, a through hole B is arranged on the diffusing chimney, and the through hole B is positioned at the joint of the diffusing chimney and the exhaust pipeline so as to communicate the exhaust pipeline and the diffusing chimney;
(4) and taking the waste residue generated by the through hole A and the waste generated by welding the blind plate A out of the manhole A, taking the waste residue generated by the through hole B out of the manhole B, and sealing the manhole A and the manhole B by using the manhole cover A and the manhole cover B respectively to finish off-line installation and butt joint of the metal filter bag dust remover.
2. The off-line installation and butt-joint method for the primary dust removal metal filter bag dust remover of the converter according to claim 1, wherein the blind plate A is close to a diffusing chimney.
3. The off-line installation and butt-joint method for the primary dust removal metal filter bag dust remover of the converter according to claim 1, wherein a blind plate B is further installed in the raw gas pipeline, the blind plate B is hermetically connected with the inner wall of the raw gas pipeline in a welding mode, and the blind plate B is close to the through hole A.
4. The off-line installation and butt-joint method for the primary dust removal metal filter bag dust remover of the converter according to claim 3, wherein after the blind plate A and the blind plate B are installed and the through hole A is formed, the manhole A and the hole cover A are sealed and welded in a welding mode; and after the through hole B is formed, the manhole B and the hole cover B are sealed and welded in a welding mode.
5. The off-line installation and butt-joint method for the once dust-removing metal filter bag dust remover of the converter according to claim 3, wherein the diameter of the air inlet pipeline is 2020mm, the diameters of the blind plate A and the blind plate B are 2020mm, and the thickness is 10 mm.
6. The off-line installation and butt-joint method for the primary dust removal metal filter bag dust remover of the converter according to claim 1, wherein a support A is installed below the air inlet pipeline, the bottom end of the support A is fixed on the ground, an arc-shaped frame A is fixed at the top of the support A, and the air inlet pipeline is located above the arc-shaped frame A.
7. The off-line installation and butt-joint method for the primary dust removal metal filter bag dust remover of the converter according to claim 1, wherein a support B is fixed on the outer side surface of the metal filter bag dust remover, the support B is formed by welding a cross rod and a vertical rod, the cross rod is fixedly connected with the metal filter bag dust remover, an arc-shaped frame B is fixed at the top end of the vertical rod, and the exhaust pipeline is positioned on the arc-shaped frame B.
8. The off-line installation and butt-joint method for the primary dust removal metal filter bag dust remover of the converter according to claim 7, wherein an inclined rod forming an angle of 45 degrees with the cross rod is fixed below the cross rod, and the inclined rod is fixedly connected with the metal filter bag dust remover.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110439415.9A CN113082880A (en) | 2021-04-23 | 2021-04-23 | Offline installation and butt joint method for primary dust removal metal filter bag dust remover of converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110439415.9A CN113082880A (en) | 2021-04-23 | 2021-04-23 | Offline installation and butt joint method for primary dust removal metal filter bag dust remover of converter |
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| CN113082880A true CN113082880A (en) | 2021-07-09 |
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| CN202110439415.9A Pending CN113082880A (en) | 2021-04-23 | 2021-04-23 | Offline installation and butt joint method for primary dust removal metal filter bag dust remover of converter |
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| CN104846143A (en) * | 2015-06-09 | 2015-08-19 | 中国十九冶集团有限公司 | Construction method for replacing steelmaking converter flue |
| CN212251633U (en) * | 2020-03-24 | 2020-12-29 | 中国电建集团河北工程有限公司 | Pipeline butt joint device for discharging residual water flow in pipeline |
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