CN112725558A - Converter gas dry-method dust removal device - Google Patents
Converter gas dry-method dust removal device Download PDFInfo
- Publication number
- CN112725558A CN112725558A CN202011537527.XA CN202011537527A CN112725558A CN 112725558 A CN112725558 A CN 112725558A CN 202011537527 A CN202011537527 A CN 202011537527A CN 112725558 A CN112725558 A CN 112725558A
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- Prior art keywords
- gas
- converter
- dust
- filter screen
- bin
- Prior art date
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- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title abstract description 5
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 30
- 231100000719 pollutant Toxicity 0.000 claims abstract description 30
- 238000011084 recovery Methods 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical class O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 150000001450 anions Chemical class 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical class [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 239000003034 coal gas Substances 0.000 claims 1
- 238000001035 drying Methods 0.000 claims 1
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 45
- 239000000243 solution Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C21C2100/00—Exhaust gas
- C21C2100/02—Treatment of the exhaust gas
-
- 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
- Y02P10/20—Recycling
Abstract
The invention relates to the field of steel smelting, in particular to a converter gas dry-method dust removal device. The system comprises a converter, an evaporative cooler, a coarse dust recovery pipeline, a grid dust remover, a bag-type dust remover, an electrostatic dust remover, a first gas pollutant removing bin and a second gas pollutant removing bin which are sequentially communicated; the converter is communicated with the evaporative cooler through the evaporative cooling flue, a gas-liquid spray gun is arranged on the evaporative cooler, and a discharge pipe is arranged in the second gas pollutant removal bin. The converter gas dry dust removal device has the advantages that dust discharged from a converter is cooled through an evaporative cooler firstly, large-particle dust is settled and enters a coarse dust recovery pipeline, a grid dust remover and a bag-type dust remover are used for further removing and recovering the dust, the remaining gas is discharged through a first gas pollutant removing bin and a second gas pollutant removing bin to remove harmful gas, and finally the gas is discharged through a discharge pipe.
Description
Technical Field
The invention relates to the field of steel smelting, in particular to a converter gas dry-method dust removal device which is simple in structure, convenient to remove dust and recover and capable of reducing pollution.
Background
Converter gas is generated in the steelmaking production process of a converter, the main components of the converter gas are CO, CO2, O2, N2, Ar and the like, and dust carried by gas, such as FeO, Fe2O3, CaO, SiO2 and the like, the total dust content is 80-150 g/Nm3, the dust must be removed for utilization, 80-120 Nm3 of the converter gas with the CO concentration of 60% can be recovered by blowing one ton of steel, and the converter gas is important secondary energy of a steel plant. A water tank can be arranged, so that dust is left in the water tank through the viscosity of water, and then the water is evaporated to dryness, so that solid matters are left for recycling, but sewage pollution is caused, and gas pollution is large.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the converter gas dry-method dust removal device which is simple in structure, convenient to remove and recover dust and capable of reducing pollution.
The technical scheme adopted by the invention is as follows: the converter gas dry dedusting device comprises a converter, an evaporative cooler, a coarse dust recovery pipeline, a grid deduster, a bag deduster, an electrostatic deduster, a first gas pollutant removal bin and a second gas pollutant removal bin which are sequentially communicated; the converter is communicated with the evaporative cooler through the evaporative cooling flue, the evaporative cooler is provided with a gas-liquid spray gun, the gas-liquid spray gun is provided with a gas injection pipe and a water spray pipe which are communicated with the top of the evaporative cooler, and the second gas pollutant removal bin is provided with a discharge pipe.
In order to better realize the invention, the bottom of the coarse dust recovery pipeline is provided with a first recovery bin.
In order to better realize the invention, the grid dust remover comprises a shell which is respectively connected with the coarse dust recovery pipeline and the bag-type dust remover, a first filter screen and a second filter screen are arranged in the shell, and a second recovery bin is arranged at the bottom of the shell.
In order to better realize the invention, a telescopic cylinder is arranged at the top of the shell, and a telescopic rod of the telescopic cylinder extends into a position between the first filter screen and the second filter screen; the telescopic rod on be connected with the horizontal pole, the both ends of this horizontal pole all are connected with the riser on install the steel brush, two the steel brush respectively with first filter screen and second filter screen contact.
In order to better realize the invention, the aperture of the first filter screen is 2.5 mm-3.5 mm.
In order to better realize the invention, the aperture of the second filter screen is 1 mm-2 mm.
In order to better realize the invention, the electrostatic dust collector comprises an insulating box, the top of the inside of the insulating box is provided with a negative electrode, the bottom of the insulating box is provided with a positive electrode, and a pipeline connecting the bag-type dust collector and the electrostatic dust collector is provided with a negative ion generator.
In order to better realize the invention, alkali liquor is arranged in the first gas pollutant removing bin.
In order to better implement the invention, the second gas pollutant removal bin is filled with activated aluminum dioxide and/or activated carbon dioxide.
In order to better realize the invention, a spiral heat exchange tube is sleeved on the vaporization cooling flue.
The invention has the beneficial effects that: the invention relates to a converter gas dry dust removal device, which is characterized in that through the matching of an evaporative cooler, a coarse dust recovery pipeline, a grid dust remover, a bag-type dust remover, an electrostatic dust remover, a first gas pollutant removal bin, a second gas pollutant removal bin and the like, dust from a converter is firstly cooled by the evaporative cooler, large-particle dust is settled and enters the coarse dust recovery pipeline, the grid dust remover and the bag-type dust remover are further removed and recovered, the residual gas is removed with harmful gas through the first gas pollutant removal bin and the second gas pollutant removal bin, and finally the residual gas is discharged from a discharge pipe. Compared with other dust removal technologies, the invention has obvious advantages in economy and environmental protection: firstly, the dust removal efficiency is high, and the mass concentration of dust is greatly reduced; secondly, the dry dedusting system does not have a sludge and sewage treatment system, the recovered dust can be directly utilized, and the water consumption is saved; thirdly, the system has small resistance loss, and the power consumption is reduced; fourthly, the system is simplified, the occupied area is small, and the management and the maintenance are convenient.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of a dry dust removal device for converter gas according to the present invention;
FIG. 2 is a schematic structural diagram of a grid dust remover of the dry dust removal device for converter gas of the present invention;
FIG. 3 is a schematic structural diagram of an electrostatic precipitator of the dry dust removal device for converter gas according to the present invention;
in the attached figure, 1-converter, 2-evaporative cooling flue, 3-evaporative cooler, 4-coarse dust recovery pipeline, 5-grid dust remover, 6-bag dust remover, 7-first gas pollutant removing bin, 8-electrostatic dust remover, 9-second gas pollutant removing bin, 10-discharge pipe, 11-first recovery bin, 12-gas-liquid spray gun, 13-gas spray pipe, 14-water spray pipe, 15-spiral heat exchange pipe, 16-first filter screen, 17-second filter screen, 18-second recovery bin, 19-telescopic cylinder, 20-telescopic rod, 21-vertical plate, 22-steel wire brush, 23-anion generator, 24-negative electrode and 25-positive electrode.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Example 1:
as shown in fig. 1 to 3, the dry dust removal device for converter gas of the present invention comprises a converter 1, an evaporative cooler 3, a coarse dust recovery pipeline 4, a grid dust remover 5, a bag-type dust remover 6, an electrostatic dust remover 8, a first gas pollutant removal bin 7 and a second gas pollutant removal bin 9 which are sequentially communicated; the converter 1 is communicated with the evaporative cooler 3 through the evaporative cooling flue 2, the evaporative cooler 3 is provided with a gas-liquid spray gun 12, the gas-liquid spray gun 12 is provided with a gas spraying pipe 13 and a water spraying pipe 14 which are both communicated with the top of the evaporative cooler 3, and the second gas pollutant removal bin 9 is provided with a discharge pipe 10. According to the dry dust removal device for the converter gas, disclosed by the invention, through the matching of the evaporative cooler 3, the coarse dust recovery pipeline 4, the grid dust remover 5, the bag-type dust remover 6, the electrostatic dust remover 8, the first gas pollutant removal bin 7, the second gas pollutant removal bin 9 and the like, dust discharged from the converter 1 is cooled through the evaporative cooler 3 firstly, large-particle dust is settled and enters the coarse dust recovery pipeline 4, the grid dust remover 5 and the bag-type dust remover 6 are further removed and recovered, the remaining gas is subjected to harmful gas removal through the first gas pollutant removal bin 7 and the second gas pollutant removal bin 9 and is finally discharged from the discharge pipe 10. The gas-liquid spray gun 12 is a spray gun capable of spraying liquid water and vapor, and the vapor is combined with dust in the evaporative cooler 3, so that the dust can be conveniently settled and recovered.
Preferably, the bottom of the coarse dust recycling pipeline 4 is provided with a first recycling bin 11, so that dust can be recycled conveniently.
Example 2:
on the basis of the above embodiment, in order to further better implement the present invention, the grid dust collector 5 includes a housing connected to the coarse dust recovery pipeline 4 and the bag-type dust collector 6, respectively, a first filter screen 16 and a second filter screen 17 are disposed in the housing, and a second recovery bin 18 is disposed at the bottom of the housing. After the design, most of dust can be left in the shell under the filtering action of the first filter screen 16 and the second filter screen 17 after the dust enters, and the dust sinks to enter the second recovery bin 18, so that the recovery is quite convenient.
Example 3:
on the basis of the above embodiment, in order to further better implement the present invention, a telescopic cylinder 19 is arranged on the top of the housing, and a telescopic rod 20 of the telescopic cylinder 19 extends between the first filter screen 16 and the second filter screen 17; the telescopic rod 20 is connected with a cross rod, two ends of the cross rod are both connected with a vertical plate 21, the vertical plate 21 is provided with a steel wire brush 22, and the two steel wire brushes 22 are respectively contacted with the first filter screen 16 and the second filter screen 17. After the design, the telescopic cylinder 19 drives the telescopic rod 20 to move up and down, and then the steel wire brush 22 is driven to continuously rub the first filter screen 16 and the second filter screen 17, so that the dust attached to the steel wire brush is brushed away, the blockage can be avoided, and the dust can be conveniently recovered.
Preferably, the aperture of the first filter 16 is 2.5mm to 3.5 mm.
Preferably, the aperture of the second filter 17 is 1 mm-2 mm.
Example 4:
on the basis of the above embodiment, in order to further better implement the present invention, the electrostatic precipitator 8 includes an insulating box, a negative electrode 24 is arranged at the top of the insulating box, a positive electrode 25 is arranged at the bottom of the insulating box, and an anion generator 23 is arranged on a pipeline connecting the bag-type precipitator 6 and the electrostatic precipitator 8. After the design, the anion generator 23 attaches anions to fine dust before the flue gas enters the insulating box, and after the flue gas enters the insulating box, the flue gas sinks under the action of an electric field formed by the cathode 24 and the anode 25, so that the dust is convenient to recover.
Example 5:
on the basis of the above embodiment, in order to further better implement the present invention, the first gas pollutant removing bin 7 is provided with an alkali solution, SO that harmful gases such as NO2, SO2, etc. can be removed, and pollution is reduced.
Preferably, the second gaseous pollutant removal bin 9 is filled with activated aluminum dioxide and/or activated carbon dioxide. After the design, harmful gas can be further removed, and pollution is reduced.
Example 6:
on the basis of the above embodiment, in order to further better implement the present invention, a spiral heat exchange tube 15 is sleeved on the vaporization cooling flue 2. After the design, can obtain heat energy when cooling down the flue gas, this part heat energy can be used for preheating etc. has practiced thrift the energy consumption.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. Converter coal gas dry process dust collector, its characterized in that: comprises a converter (1), an evaporative cooler (3), a coarse dust recovery pipeline (4), a grid dust collector (5), a bag-type dust collector (6), an electrostatic dust collector (8), a first gas pollutant removing bin (7) and a second gas pollutant removing bin (9) which are communicated in sequence; the converter (1) is communicated with the evaporative cooler (3) through the evaporation cooling flue (2), the evaporative cooler (3) is provided with a gas-liquid spray gun (12), the gas-liquid spray gun (12) is provided with a gas spraying pipe (13) and a water spraying pipe (14) which are communicated with the top of the evaporative cooler (3), and the second gas pollutant removing bin (9) is provided with a discharge pipe (10).
2. The dry dedusting device for converter gas according to claim 1, is characterized in that: and a first recovery bin (11) is arranged at the bottom of the coarse dust recovery pipeline (4).
3. The dry dedusting device for converter gas according to claim 2, is characterized in that: the grid dust remover (5) comprises a shell which is respectively connected with a coarse dust recovery pipeline (4) and a bag-type dust remover (6), a first filter screen (16) and a second filter screen (17) are arranged in the shell, and a second recovery bin (18) is arranged at the bottom of the shell.
4. The dry dedusting device for converter gas according to claim 3, is characterized in that: a telescopic cylinder (19) is arranged at the top of the shell, and a telescopic rod (20) of the telescopic cylinder (19) extends between the first filter screen (16) and the second filter screen (17); the telescopic rod (20) is connected with a cross rod, the two ends of the cross rod are both connected with a vertical plate (21), the vertical plate (21) is provided with a steel wire brush (22), and the two steel wire brushes (22) are respectively contacted with the first filter screen (16) and the second filter screen (17).
5. The dry dedusting device for converter gas according to claim 4, is characterized in that: the aperture of the first filter screen (16) is 2.5 mm-3.5 mm.
6. The dry dedusting device for converter gas according to claim 5, is characterized in that: the aperture of the second filter screen (17) is 1 mm-2 mm.
7. The dry dedusting device for converter gas according to claim 1, is characterized in that: the electrostatic dust collector (8) comprises an insulating box, a negative electrode (24) is arranged at the top of the inside of the insulating box, a positive electrode (25) is arranged at the bottom of the inside of the insulating box, and an anion generator (23) is arranged on a pipeline connecting the bag-type dust collector (6) and the electrostatic dust collector (8).
8. The dry dedusting device for converter gas according to claim 1, is characterized in that: an alkali liquor is arranged in the first gas pollutant removing bin (7).
9. The dry dedusting device for converter gas according to claim 1, is characterized in that: and the second gas pollutant removal bin (9) is filled with activated aluminum dioxide and/or activated carbon dioxide.
10. The dry dedusting device for converter gas according to claim 1, is characterized in that: the vaporization cooling flue (2) is sleeved with a spiral heat exchange tube (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537527.XA CN112725558A (en) | 2020-12-23 | 2020-12-23 | Converter gas dry-method dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011537527.XA CN112725558A (en) | 2020-12-23 | 2020-12-23 | Converter gas dry-method dust removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112725558A true CN112725558A (en) | 2021-04-30 |
Family
ID=75604450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011537527.XA Pending CN112725558A (en) | 2020-12-23 | 2020-12-23 | Converter gas dry-method dust removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112725558A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113560041A (en) * | 2021-08-18 | 2021-10-29 | 宁夏森源重工设备有限公司 | Ore smelting furnace raw material sintering dry dedusting system and use method thereof |
| CN113560041B (en) * | 2021-08-18 | 2024-05-14 | 宁夏森源重工设备有限公司 | Dry dust removal system for sintering raw materials of submerged arc furnace and application method of dry dust removal system |
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| WO2020182404A1 (en) * | 2019-03-11 | 2020-09-17 | Sms Group Gmbh | Apparatus and method for cooling and/or cleaning a process gas leaving a converter |
-
2020
- 2020-12-23 CN CN202011537527.XA patent/CN112725558A/en active Pending
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|---|---|---|---|---|
| CN201930696U (en) * | 2011-02-23 | 2011-08-17 | 魏欢 | High-efficiency device for removing acidic gas in smoke gas or coal gas |
| CN102824837A (en) * | 2012-09-14 | 2012-12-19 | 北京机电院高技术股份有限公司 | Complete equipment and method for wet processing of sludge incineration offgas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113560041A (en) * | 2021-08-18 | 2021-10-29 | 宁夏森源重工设备有限公司 | Ore smelting furnace raw material sintering dry dedusting system and use method thereof |
| CN113560041B (en) * | 2021-08-18 | 2024-05-14 | 宁夏森源重工设备有限公司 | Dry dust removal system for sintering raw materials of submerged arc furnace and application method of dry dust removal system |
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Application publication date: 20210430 |