CN210886095U - Converter primary flue gas deep purification mixing wet electrostatic dust removal system - Google Patents
Converter primary flue gas deep purification mixing wet electrostatic dust removal system Download PDFInfo
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- CN210886095U CN210886095U CN201921797472.9U CN201921797472U CN210886095U CN 210886095 U CN210886095 U CN 210886095U CN 201921797472 U CN201921797472 U CN 201921797472U CN 210886095 U CN210886095 U CN 210886095U
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- flue gas
- wet electrostatic
- deep purification
- dust removal
- electrostatic dust
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000003546 flue gas Substances 0.000 title claims abstract description 82
- 239000000428 dust Substances 0.000 title claims abstract description 69
- 238000000746 purification Methods 0.000 title claims abstract description 28
- 239000012719 wet electrostatic precipitator Substances 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000004880 explosion Methods 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 238000009628 steelmaking Methods 0.000 abstract description 7
- 238000003723 Smelting Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004924 electrostatic deposition Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
The utility model discloses a flue gas deep purification mixes wet electrostatic precipitator system once of converter, include wherein with converter exhaust port intercommunication at least one OG dust collector, each OG dust collector's exhanst gas outlet communicates with vertical or horizontal wet electrostatic precipitator's flue gas inlet, each through the pipeline respectively wet electrostatic precipitator's exhanst gas outlet passes through pipeline and fan station intercommunication. The utility model discloses flue gas deep purification mixes wet electrostatic precipitator system's of converter structural design is simple, and a flue gas that produces during smelting to steelmaking converter makes a flue gas ultralow emission through deep purification treatment, realizes the target of high-efficient environmental protection.
Description
Technical Field
The utility model relates to a flue gas purification technical field of converter steelmaking especially relates to a flue gas deep purification mixes wet electrostatic precipitator system once of steelmaking converter.
Background
In the field of steelmaking, a large number of converters adopt a traditional OG dust removal device for wet dust removal, namely, a fan is adopted to pull flue gas at a high speed through a throat or a circular seam of the converter, so that dust in the flue gas can be collided or kneaded into tiny water drops for dust removal, and the content of the purified flue gas dust is 50-100 mg/Nm generally3Left and right.
The present inventors have made intensive studies on how to design a deep purification hybrid wet electrostatic precipitator system for primary flue gas of a converter, which can achieve ultra-low emission of the primary flue gas of the converter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flue gas deep purification mixes wet-type electrostatic precipitator system once of converter, its structural design is simple, and a flue gas that produces during smelting to steelmaking converter makes flue gas ultralow emission through deep purification treatment, realizes the target of high-efficient environmental protection.
In order to realize the above object, the utility model provides a converter flue gas deep purification mixes wet electrostatic precipitator system, wherein include with converter exhaust port intercommunication at least one OG dust collector, each OG dust collector's exhanst gas outlet communicates with vertical or horizontal wet electrostatic precipitator's exhanst gas inlet through the pipeline respectively, each wet electrostatic precipitator's exhanst gas outlet passes through pipeline and fan station intercommunication.
Preferably, the vertical wet electrostatic precipitator comprises a cylindrical barrel, a flue gas inlet is arranged at the lower part of the side wall of the barrel and is communicated with the OG dust removal device through a flue gas inlet pipe, the upper end of the barrel is connected with a conical cover body, a flue gas outlet is arranged on the cover body and is communicated with the fan station through a flue gas exhaust pipe, an inner cavity of the barrel is provided with an electrode assembly, the electrode assembly comprises a honeycomb-shaped dust collection plate arranged in the inner cavity of the barrel and a discharge electrode penetrating through a plurality of honeycomb holes of the dust collection plate, the discharge electrode is connected with a high-voltage power supply, the upper end and the lower end of the discharge electrode are respectively connected and arranged on an electrode wire suspension, a plurality of electrode wire hangers are connected on the electrode wire suspension at the upper part, the upper ends of the plurality of electrode wire hangers are respectively connected with a plurality of high, the dust collecting device is characterized in that a water spraying mechanism used for spraying and washing dust is installed above the dust collecting plate in the inner cavity of the barrel, a smoke distribution plate and a smoke guide plate are arranged below the dust collecting plate at an upper interval and a lower interval, and a smoke inlet is located on one side of the upper portion of the smoke guide plate.
Preferably, the flue gas distribution plate comprises a plurality of slats, the slats are horizontally arranged in parallel and are arranged in the inner cavity of the barrel at intervals, a plurality of gaps are formed among the slats, two ends of each slat are respectively provided with a projection, positions of the barrel corresponding to two ends of the plurality of slats are respectively provided with a groove, and each slat is respectively inserted into the corresponding groove of the barrel through the projection at the end part.
Preferably, the flue gas guide plate is an inclined slope panel, and one end of the flue gas guide plate close to the flue gas inlet is a slope bottom end.
Preferably, the dust collecting plate is a stainless steel plate or a carbon steel plate.
Preferably, the discharge electrode is composed of RS-type tubular stainless steel.
Preferably, the water spraying mechanism comprises an annular spray pipe arranged above the dust collecting plate, the spray pipe is fixed on the barrel through a plurality of supporting structures and is communicated with the water inlet pipe, and a plurality of nozzles are arranged on the spray pipe along the circumferential direction.
Preferably, the water inlet pipe is provided with an electromagnetic valve which is controlled by a PLC to open and close.
Preferably, a gas distributor is arranged below the dust collecting plate in the inner cavity of the cylinder, and a plurality of atomizing nozzles are arranged on the gas distributor.
Preferably, a plurality of explosion venting valves are arranged on the cover body.
After the scheme is adopted, the utility model discloses flue gas deep purification mixes wet-type electrostatic precipitator system once of converter passes through above-mentioned structural design, and dust content can be by present 50 ~ 100mg/Nm in flue gas once of its steelmaking converter3Reduced to a minimum of less than 10mg/Nm3The system has a small installation related range, the part in a plant does not need to be changed, the system has short production stop time (less than 1 week) during installation, the influence on the existing production is very small, compared with other methods, the method has low reconstruction engineering investment and simple structural design, and the primary flue gas generated during smelting of the steel converter is subjected to deep purification treatment to ensure that the primary flue gas is discharged at an ultralow level, thereby realizing the aims of high efficiency and environmental protection.
Drawings
FIG. 1 is a schematic structural view of a primary flue gas deep purification hybrid wet electrostatic dust removal system of a converter according to the present invention;
FIG. 2 is a schematic view of the vertical wet electrostatic precipitator of the dust-removing system of the present invention;
FIG. 3 is a schematic view of the vertical wet electrostatic precipitator of the dust-collecting system of the present invention;
FIG. 4 is a schematic structural view of a water spraying mechanism of the vertical wet electrostatic precipitator of the present invention;
FIG. 5 is a schematic top view of the structure of FIG. 4;
fig. 6 is a schematic view of a three-dimensional structure of the vertical wet electrostatic precipitator in which the flue gas distribution plate and the flue gas guide plate are installed in the cylinder;
FIG. 7 is a schematic sectional view taken along line A-A of FIG. 3;
fig. 8 is a schematic sectional view along the direction B-B in fig. 3.
Detailed Description
The invention will be elucidated below on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is defined only by the scope of the claims, and includes all modifications that have the same meaning as the scope of the claims and are within the scope of the claims.
The structure of the primary flue gas deep purification hybrid wet electrostatic dust removal system of the converter of the present invention is described below with reference to specific embodiments.
As shown in figure 1 the utility model discloses converter flue gas deep purification mixes wet electrostatic precipitator system's structural schematic diagram, include with converter exhaust port intercommunication at least one OG (wet process) dust collector 1, each OG dust collector 1's exhanst gas outlet communicates with vertical or horizontal wet electrostatic precipitator 3's flue gas inlet through first pipeline 2 respectively, and each wet electrostatic precipitator 3's exhanst gas outlet passes through second pipeline 4 and fan station 5 intercommunication.
Referring to fig. 2 and 3, the vertical wet electrostatic precipitator 3 includes a cylindrical barrel 6 vertically disposed, a flue gas inlet 7 is disposed at a lower portion of a side wall of the barrel 6, the flue gas inlet 7 is communicated with the OG dust collector 1 through a flue gas inlet pipe 8, an upper end of the barrel 6 is connected with a conical cover 9, a plurality of explosion venting valves 10 are circumferentially disposed on the cover 9, a flue gas outlet 11 is disposed at a central portion of an upper end of the cover 9, the flue gas outlet 11 is communicated with the fan station 5 through a flue gas exhaust pipe 12, an inner cavity of the barrel 6 is provided with an electrode assembly, the electrode assembly includes a honeycomb-shaped dust collecting plate 13 disposed in the inner cavity of the barrel 6 and a plurality of discharge electrodes 14 penetrating through the honeycomb-shaped dust collecting plate 13, the dust collecting plate 13 is made of a stainless steel plate or a carbon steel. The discharge electrode 14 is connected to a high-voltage power supply. The upper end and the lower end of the discharge electrode 14 are respectively connected and arranged on two polar line suspensions 15, the polar line suspension 15 on the upper portion is connected with a plurality of polar line hangers 16, the upper ends of the polar line hangers 16 are respectively connected with a plurality of high-voltage porcelain bottles 17, the high-voltage porcelain bottles 17 are mounted on the cover body 9, and a water spraying mechanism for spraying dust is mounted above the dust collecting plate 13 in the inner cavity of the cylinder body 6. Referring to fig. 4 and 5, the water spraying mechanism includes an annular nozzle 18 disposed above the dust collecting plate 13, the nozzle 18 is fixed on the upper portion of the inner cavity wall of the cylinder 6 through a plurality of support structures, in this embodiment, the support structures are welded to the inner cavity wall of the cylinder 6 through a plurality of support pipes 19, the nozzle 18 is communicated with the water inlet pipe 20, and a plurality of nozzles are disposed on the nozzle 18 along the circumferential direction. The water inlet pipe 20 is provided with an electromagnetic valve which is controlled by a PLC to open and close.
Referring to fig. 6, the inner cavity of the cylinder 6 is located below the dust collecting plate 13 and is provided with a flue gas distribution plate 21 and a flue gas guide plate 22 at an upper and lower interval, and the flue gas inlet 7 is located on one side above the flue gas guide plate 22.
As shown in fig. 7, the flue gas distribution plate 21 includes a plurality of strips 23, the strips 23 are horizontally installed in the inner cavity of the barrel 6 in parallel and at intervals, a plurality of gaps are formed between the strips 23, the two ends of each strip 23 are respectively provided with a projection 24, the wall of the inner cavity of the barrel 6 is provided with a groove at the position corresponding to the two ends of the strips 23, and each strip 23 is respectively inserted into the corresponding groove of the barrel 6 through the projection 24 at the end.
The flue gas guide plate 22 is an inclined slope surface plate, and one end of the flue gas guide plate 22 close to the flue gas inlet 7 is a slope bottom end.
Referring to fig. 8, a gas distributor 25 is arranged below the dust collecting plate 13 in the inner cavity of the cylinder 6, and a plurality of atomizing nozzles 26 are arranged on the gas distributor 25.
When the wet electrostatic dust collector works, smoke enters the inner cavity of the cylinder 6 through the smoke inlet 7 at the lower part and flows out through the tapered smoke outlet 11 at the upper part, the smoke distribution plate 21 in the inner cavity of the cylinder 6 ensures that the gas flow is uniformly distributed along the cross section direction of the wet electrostatic dust collector 3, according to the electrostatic deposition principle, the dust collection plate 13 formed by a honeycomb structure is arranged inside the wet electrostatic dust collector 3 and is connected with the negative pole of a high-voltage power supply, and the discharge electrode 14 is formed by RS-shaped tubular stainless steel and is connected with the positive pole of the high-voltage power supply. In order to ensure that the inner cavity of the wet electrostatic precipitator 3 is in a state of saturation in humidity, a plurality of atomizing nozzles 26 are installed at the gas distributor 25 below the dust collecting plate 13, and work continuously to clean dust on the dust collecting plate 13 and the discharge electrodes 14 all the time, and a water spraying mechanism is installed on the wet electrostatic precipitator 3 and installed on the top of the wet electrostatic precipitator 3, and is only used for washing for a few minutes in the non-converting stage of the converter. Atomized water and flushing water are collected at the bottom of the wet electrostatic dust collector 3, in order to prevent the cylinder 6 and the interior of the wet electrostatic dust collector 3 from being damaged due to burning and explosion, the wet electrostatic dust collector 3 is provided with a sufficient number of explosion venting valves 10, and the cylinder 6 is designed to prevent pressure impact.
The utility model discloses a mix wet-type electrostatic precipitator system, dust content can be by present 50 ~ 100mg Nm in steelmaking converter flue gas3Reduced to a minimum of less than 10mg/Nm3. The system has a small installation related range, and the inner part of a plant does not need to be changed. For rotation during installation of the systemThe production stop of the furnace requires short time (less than 1 week) and has little influence on the existing production. Compared with other methods, the method has low investment in reconstruction engineering, the system has simple structural design, and the primary flue gas generated in the smelting period of the steel converter is subjected to deep purification treatment to ensure that the primary flue gas is discharged at an ultralow level, thereby realizing the aims of high efficiency and environmental protection.
The utility model discloses flue gas deep purification mixes wet electrostatic precipitator system's for a converter wet electrostatic precipitator 3 can also adopt horizontal structure, and its barrel 6 is placed for the level, and its flue gas inlet 7 and exhanst gas outlet 11 set up respectively in the left and right-hand member of the 6 inner chambers of barrel, and its electrode subassembly is along the level to setting up in the inner chamber of barrel 6.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the present invention is not limited to the example methods, structures, and precise structures shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (10)
1. The converter primary flue gas deep purification hybrid wet electrostatic dust removal system is characterized by comprising at least one OG dust removal device communicated with a converter smoke outlet, wherein a flue gas outlet of each OG dust removal device is respectively communicated with a flue gas inlet of a vertical or horizontal wet electrostatic dust collector through a pipeline, and a flue gas outlet of each wet electrostatic dust collector is communicated with a fan station through a pipeline.
2. The deep purification and mixing wet electrostatic dust removal system for primary flue gas of the converter according to claim 1, wherein the vertical wet electrostatic dust collector comprises a cylindrical barrel, a flue gas inlet is formed in the lower portion of the side wall of the barrel, the flue gas inlet is communicated with the OG dust removal device through a flue gas inlet pipe, a conical cover body is connected to the upper end of the barrel, a flue gas outlet is formed in the cover body, the flue gas outlet is communicated with the fan station through a flue gas exhaust pipe, an electrode assembly is arranged in the inner cavity of the barrel, the electrode assembly comprises a honeycomb dust collecting plate arranged in the inner cavity of the barrel and a discharge electrode penetrating through a plurality of honeycomb holes of the dust collecting plate, the discharge electrode is connected with a high-voltage power supply, the upper end and the lower end of the discharge electrode are respectively connected and arranged on an electrode wire suspension, a plurality of electrode wire hangers are connected to the electrode wire suspension on the, a plurality of high-pressure vase install in on the lid, the barrel inner chamber is located the top of the board that gathers dust and installs the water spray mechanism who is used for the spray rinsing dust, the barrel inner chamber is located gather dust the below of board and be upper and lower interval and be equipped with flue gas distribution board and flue gas guide plate, the flue gas import is located top one side of flue gas guide plate.
3. The primary flue gas deep purification and mixing wet electrostatic dust removal system of the converter according to claim 2, wherein the flue gas distribution plate comprises a plurality of slats, the plurality of slats are horizontally arranged in parallel and are arranged in the inner cavity of the cylinder at intervals, a plurality of gaps are formed among the plurality of slats, two ends of each slat are respectively provided with a projection, positions on the cylinder corresponding to two ends of the plurality of slats are respectively provided with a groove, and each slat is respectively inserted into the corresponding groove of the cylinder through the projection at the end.
4. The primary flue gas deep purification hybrid wet electrostatic dust removal system of claim 2, wherein the flue gas deflector is an inclined slope surface plate, and the end of the flue gas deflector close to the flue gas inlet is a slope bottom end.
5. The deep purification and mixing wet electrostatic dust removal system for primary flue gas of a converter according to claim 2, wherein the dust collection plate is a stainless steel plate or a carbon steel plate.
6. The deep purification and mixing wet electrostatic dust removal system for primary flue gas of a converter according to claim 2, wherein the discharge electrode is composed of RS-type tubular stainless steel.
7. The deep purification and mixing wet electrostatic dust removal system for primary flue gas of a converter according to claim 2, wherein the water spray mechanism comprises an annular spray pipe arranged above the dust collection plate, the spray pipe is fixed on the cylinder body through a plurality of support structures, the spray pipe is communicated with the water inlet pipe, and a plurality of nozzles are arranged on the spray pipe along the circumferential direction.
8. The deep purification and mixing wet electrostatic dust removal system for primary flue gas of the converter according to claim 7, wherein the water inlet pipe is provided with an electromagnetic valve which is controlled to be opened and closed by a PLC.
9. The deep purification and mixing wet electrostatic dust removal system for primary flue gas of a converter according to claim 2, wherein a gas distributor is arranged in the inner cavity of the cylinder and below the dust collecting plate, and a plurality of atomizing nozzles are arranged on the gas distributor.
10. The deep purification and mixing wet electrostatic precipitator system for primary flue gas of a converter according to claim 2, wherein a plurality of explosion venting valves are arranged on the cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797472.9U CN210886095U (en) | 2019-10-24 | 2019-10-24 | Converter primary flue gas deep purification mixing wet electrostatic dust removal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797472.9U CN210886095U (en) | 2019-10-24 | 2019-10-24 | Converter primary flue gas deep purification mixing wet electrostatic dust removal system |
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| Publication Number | Publication Date |
|---|---|
| CN210886095U true CN210886095U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921797472.9U Active CN210886095U (en) | 2019-10-24 | 2019-10-24 | Converter primary flue gas deep purification mixing wet electrostatic dust removal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413745A (en) * | 2022-01-04 | 2022-04-29 | 华北电力科学研究院有限责任公司 | Device and method for detecting insulation moisture depth of generator stator |
-
2019
- 2019-10-24 CN CN201921797472.9U patent/CN210886095U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114413745A (en) * | 2022-01-04 | 2022-04-29 | 华北电力科学研究院有限责任公司 | Device and method for detecting insulation moisture depth of generator stator |
| CN114413745B (en) * | 2022-01-04 | 2023-05-23 | 华北电力科学研究院有限责任公司 | Device and method for detecting insulation and moisture depth of generator stator |
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