CN112646946A - Dry-method ultra-clean emission dust removal device - Google Patents
Dry-method ultra-clean emission dust removal device Download PDFInfo
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- CN112646946A CN112646946A CN202110045259.8A CN202110045259A CN112646946A CN 112646946 A CN112646946 A CN 112646946A CN 202110045259 A CN202110045259 A CN 202110045259A CN 112646946 A CN112646946 A CN 112646946A
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- China
- Prior art keywords
- intermetallic compound
- pneumatic
- pipe
- manual ball
- dry
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- 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.)
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- 239000000428 dust Substances 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims description 32
- 238000001035 drying Methods 0.000 claims description 5
- 229910001873 dinitrogen Inorganic materials 0.000 claims 3
- 230000008676 import Effects 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 abstract description 24
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 15
- 239000003546 flue gas Substances 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 2
- 230000005415 magnetization Effects 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention belongs to the technical field of dust removal application, and particularly discloses a dry-method ultra-clean emission dust removal device which comprises a high-temperature intermetallic compound filter bag dust remover, a back-flushing pipe, a first manual ball valve, a first nitrogen back-flushing air bag, a first control valve, a first pneumatic valve, an auxiliary ash discharge pipe, a pneumatic ash conveying unit ash discharge pipe, a second control valve, a second pneumatic valve, a first guide pipe, a second manual ball valve, a third pneumatic valve and the like. The invention has the beneficial effects that: 1. the high-temperature intermetallic compound filter bag is safe and reliable, has perfect safety measures, and has the advantages of impact resistance, high temperature resistance, magnetization resistance, good electric conduction and long service life; the energy is saved, the running resistance is low, the filtration is carried out by a dry-whole method, no water consumption is caused, no waste water and sludge are generated, and the energy is saved; 3. the expansibility is good, the temperature of the filtered gas is reduced to be lower than 10 ℃, and a proper temperature is created for the subsequent catalytic removal of the carbon monoxide in the flue gas.
Description
Technical Field
The invention belongs to the technical field of dust removal application, and particularly relates to a dry-method ultra-clean emission dust removal device.
Background
When the converter is used for steelmaking, a large amount of primary flue gas with high temperature, toxicity and high dust content can be generated, and the main components of the primary flue gas comprise carbon monoxide and various dust particle pollutants.
At present, two processes, namely a dry process and a wet process, are commonly adopted for primary dust removal of a converter, and the dry process has certain energy-saving and technical advantages, so that the primary dust removal of the converter is mainly realized by the dry process, and the dry process dust removal process is that high-temperature flue gas at 1200 ℃ is cooled to about 800-1000 ℃ through a vaporization flue and then enters an evaporative cooler, is cooled to 200 ℃ by atomized water sprayed by an aerosol nozzle, and meanwhile, most coarse particles are intercepted. And the residual flue gas enters an electric dust collector, fine particles in the flue gas are adsorbed and removed under the electrostatic adsorption effect, the flue gas subjected to electrostatic dust collection enters a gas switching station under the action of a fan, qualified gas is recycled to a gas cabinet, and unqualified gas is diffused to the atmosphere through a chimney.
Because the converter has large blowing flue gas amount and large fluctuation, the electric dust remover is limited by the inherent technical bottlenecks of the electric dust remover such as back corona caused by high specific resistance dust, secondary dust caused by vibration, insufficient electric charge of fine dust and the like, the stable outlet discharge concentration of less than or equal to 10mg/Nm3 is difficult to realize, and the problems of large dust removal energy consumption, waste liquid and slurry treatment problem of water consumption and inconvenience for removing carbon monoxide from the subsequent discharged flue gas also exist.
Therefore, based on the problems, the invention provides a dry-method ultra-clean emission dust removal device.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a dry-method ultra-clean discharge dust removal device which is reasonable in overall structural design, solves the problems of the traditional dry-method dust removal, is low in filtration resistance, reduces energy consumption, does not have water consumption, does not have waste liquid and slurry to be treated, can stably meet the requirement that the discharge concentration of an outlet is less than or equal to 10mg/Nm3, and is stable in treatment operation state, high in efficiency, safe and reliable.
The technical scheme is as follows: the invention provides a dry-method ultra-clean emission dust removal device, which comprises a high-temperature intermetallic compound filter bag dust remover, a back-flushing pipe connected with the high-temperature intermetallic compound filter bag dust remover, a first manual ball valve connected with the back-flushing pipe, a first nitrogen back-flushing air bag connected with a first manual ball valve, a first nitrogen back-flushing air bag air inlet pipe connected with the first nitrogen back-flushing air bag, a high-temperature intermetallic compound filter bag dust remover outlet, a high-temperature intermetallic compound filter bag dust remover inlet, a high-temperature intermetallic compound filter bag dust remover ash discharging port arranged on the high-temperature intermetallic compound filter bag dust remover, an ash discharging pipe connected with the ash discharging port of the high-temperature intermetallic compound filter bag dust remover, a first control valve and a first pneumatic valve arranged at two ends of the ash discharging pipe, an auxiliary ash discharging pipe connected with the first pneumatic valve, and a pneumatic ash conveying unit connected with the auxiliary ash discharging pipe, and the pneumatic ash conveying unit ash discharging pipe is arranged on the pneumatic ash conveying unit, the second control valve and the second pneumatic valve are arranged at two ends of the pneumatic ash conveying unit ash discharging pipe, the first guide pipe and the second guide pipe are respectively connected with the inlet of the high-temperature intermetallic compound filter bag dust collector and the pneumatic ash conveying unit, the second guide pipe and the second manual ball valve and the third pneumatic valve are respectively arranged at one end of the first guide pipe and one end of the second guide pipe, and the third manual ball valve and the second pneumatic valve are respectively connected with the second manual ball valve and the third manual ball valve.
According to the technical scheme, the dry-method ultra-clean emission dust removal device further comprises an auxiliary back-flushing pipe connected with the high-temperature intermetallic compound filter bag dust remover, a second manual ball valve connected with the auxiliary back-flushing pipe, a second nitrogen back-flushing air bag connected with the second manual ball valve, a second nitrogen back-flushing air bag air inlet pipe connected with the second nitrogen back-flushing air bag, and a back-flushing guide pipe connected with the pneumatic ash conveying unit.
According to the technical scheme, the dry-method ultra-clean discharge dust removal device further comprises a pressure sensor and a temperature sensor which are arranged on the high-temperature intermetallic compound filter bag dust remover.
Compared with the prior art, the dry-method ultra-clean emission dust removal device has the beneficial effects that: 1. the high-temperature intermetallic compound filter bag is safe and reliable, has perfect safety measures, and has the advantages of impact resistance, high temperature resistance, magnetization resistance, good electric conduction and long service life; the energy is saved, the running resistance is low, the filtration is carried out by a dry-whole method, no water consumption is caused, no waste water and sludge are generated, and the energy is saved; 3. the expansibility is good, the temperature of the filtered gas is reduced to be lower than 10 ℃, and a proper temperature is created for the subsequent catalytic removal of the carbon monoxide in the flue gas.
Drawings
Fig. 1 is a schematic structural diagram of a dry-method ultra-clean discharge dust removal device of the invention.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example one
As shown in figure 1, a dry ultra-clean emission dust removal device comprises a high-temperature intermetallic compound filter bag dust remover 101, a back-flushing pipe 5 connected with the high-temperature intermetallic compound filter bag dust remover 101, a first manual ball valve 6 connected with the back-flushing pipe 5, a first nitrogen back-flushing air bag 103 connected with the first manual ball valve 6, a first nitrogen back-flushing air bag air inlet pipe 4 connected with the first nitrogen back-flushing air bag 103, a high-temperature intermetallic compound filter bag dust remover outlet 1 arranged on the high-temperature intermetallic compound filter bag dust remover 101, a high-temperature intermetallic compound filter bag dust remover inlet 2, a high-temperature intermetallic compound filter bag dust remover dust discharging port 3, an ash discharging pipe 17 connected with the high-temperature intermetallic compound filter bag dust discharging port 3, first control valves 16 arranged at two ends of the ash discharging pipe 17, a first pneumatic valve 18, and an auxiliary ash discharging pipe 22 connected with the first pneumatic valve 18, and a pneumatic ash conveying unit 102 connected with the auxiliary ash discharging pipe 22, a pneumatic ash conveying unit ash discharging pipe 21 arranged on the pneumatic ash conveying unit 102, a second control valve 19 and a second pneumatic valve 20 arranged at two ends of the pneumatic ash conveying unit ash discharging pipe 21, a first conduit 11 and a second conduit 12 respectively connected with the high-temperature intermetallic compound filter bag dust collector inlet 2 and the pneumatic ash conveying unit 102, a second manual ball valve 13 and a third manual ball valve 14 respectively arranged at one end of the first conduit 11 and one end of the second conduit 12, and a third pneumatic valve 15 respectively connected with the second manual ball valve 13 and the third manual ball valve 14.
Example two
As shown in figure 1, a dry ultra-clean emission dust removal device comprises a high-temperature intermetallic compound filter bag dust remover 101, a back-flushing pipe 5 connected with the high-temperature intermetallic compound filter bag dust remover 101, a first manual ball valve 6 connected with the back-flushing pipe 5, a first nitrogen back-flushing air bag 103 connected with the first manual ball valve 6, a first nitrogen back-flushing air bag air inlet pipe 4 connected with the first nitrogen back-flushing air bag 103, a high-temperature intermetallic compound filter bag dust remover outlet 1 arranged on the high-temperature intermetallic compound filter bag dust remover 101, a high-temperature intermetallic compound filter bag dust remover inlet 2, a high-temperature intermetallic compound filter bag dust remover dust discharging port 3, an ash discharging pipe 17 connected with the high-temperature intermetallic compound filter bag dust discharging port 3, first control valves 16 arranged at two ends of the ash discharging pipe 17, a first pneumatic valve 18, and an auxiliary ash discharging pipe 22 connected with the first pneumatic valve 18, and a pneumatic ash conveying unit 102 connected with the auxiliary ash discharging pipe 22, a pneumatic ash conveying unit ash discharging pipe 21 arranged on the pneumatic ash conveying unit 102, a second control valve 19 and a second pneumatic valve 20 arranged at two ends of the pneumatic ash conveying unit ash discharging pipe 21, a first conduit 11 and a second conduit 12 respectively connected with the high-temperature intermetallic compound filter bag dust collector inlet 2 and the pneumatic ash conveying unit 102, a second manual ball valve 13 and a third manual ball valve 14 respectively arranged at one end of the first conduit 11 and one end of the second conduit 12, a third pneumatic valve 15 respectively connected with the second manual ball valve 13 and the third manual ball valve 14, an auxiliary blowback pipe 7 connected with the high-temperature intermetallic compound filter bag 101, a second manual ball valve 10 connected with the auxiliary blowback pipe 7, a second nitrogen blowback air bag 8 connected with the second manual ball valve 10, and a second nitrogen blowback air bag air inlet pipe 9 connected with the second nitrogen blowback air bag 8, and a blowback conduit 23 connected to the pneumatic ash conveying unit 102.
The dry-method ultra-clean emission dust removal device of the first structural embodiment or the second structural embodiment further comprises a pressure sensor and a temperature sensor which are arranged on the high-temperature intermetallic compound filter bag dust remover 101, and is used for monitoring the internal operation state environment, facilitating field or remote control and realizing safe, stable and reliable production operation.
According to the dry-method ultra-clean emission dust removal device in the first structural embodiment or the second structural embodiment, after flue gas is subjected to electric dust removal, fine dust removal is carried out by adopting the dust removal device, and the requirement that the emission stability of converter dry-method dust removal is less than or equal to 10mg/Nm3 can be safely met.
In the dry ultra-clean emission dust removal device according to the first or second structural embodiment, the high-temperature intermetallic compound filter bag dust remover 101 includes an original air chamber for accommodating the diffused gas to be filtered and a clean air chamber for accommodating the filtered gas.
In the dry ultra-clean emission dust removal device of the first or second structural embodiment, the high-temperature intermetallic compound filter bag dust remover 101 is used for receiving gas to be removed, the interception of solid particles is completed by the high-temperature intermetallic compound filter bag, the intercepted particles are conveyed to the outside by the pneumatic ash conveying system, and the air inlet and the air outlet pressure transmitter (not shown in fig. 1) of the high-temperature intermetallic compound filter bag dust remover 101 judges the dust accumulation amount on the surface of the high-temperature intermetallic compound filter bag and judges whether to perform back flushing or not.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (3)
1. The utility model provides a dry process ultra-clean discharges dust collector which characterized in that: including high temperature intermetallic compound bag dust remover (101), and blowback pipe (5) of being connected with high temperature intermetallic compound bag dust remover (101), and first manual ball valve (6) of being connected with blowback pipe (5), and first nitrogen gas blowback gas package (103) of being connected with first manual ball valve (6), and first nitrogen gas blowback gas package intake pipe (4) of being connected with first nitrogen gas blowback gas package (103), and set up high temperature intermetallic compound bag dust remover export (1) on high temperature intermetallic compound bag dust remover (101), high temperature intermetallic compound bag dust remover import (2), high temperature intermetallic compound bag dust remover ash discharging port (3), and ash discharging pipe (17) of being connected with high temperature intermetallic compound bag dust remover ash discharging port (3), and set up first control valve (16) at the both ends of ash discharging pipe (17), The device comprises a first pneumatic valve (18), an auxiliary ash discharging pipe (22) connected with the first pneumatic valve (18), a pneumatic ash conveying unit (102) connected with the auxiliary ash discharging pipe (22), a pneumatic ash conveying unit ash discharging pipe (21) arranged on the pneumatic ash conveying unit (102), second control valves (19) and second pneumatic valves (20) arranged at two ends of the pneumatic ash conveying unit ash discharging pipe (21), a first conduit (11) and a second conduit (12) respectively connected with a high-temperature intermetallic compound filter bag dust collector inlet (2) and the pneumatic ash conveying unit (102), and second manual ball valves (13) and third manual ball valves (14) respectively arranged at one ends of the first conduit (11) and the second conduit (12), and third pneumatic valves (15) respectively connected with the second manual ball valves (13) and the third manual ball valves (14).
2. The dry ultra-clean emission dust removal device according to claim 1, wherein: the dry-method ultra-clean emission dust removal device further comprises an auxiliary blowback pipe (7) connected with the high-temperature intermetallic compound filter bag dust remover (101), a second manual ball valve (10) connected with the auxiliary blowback pipe (7), a second nitrogen blowback air bag (8) connected with the second manual ball valve (10), a second nitrogen blowback air bag air inlet pipe (9) connected with the second nitrogen blowback air bag (8), and a blowback guide pipe (23) connected with the pneumatic ash conveying unit (102).
3. The dry ultra-clean emission dust removal device according to claim 1, wherein: the dry-method ultra-clean discharge dust removal device further comprises a pressure sensor and a temperature sensor which are arranged on the high-temperature intermetallic compound filter bag dust remover (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045259.8A CN112646946A (en) | 2021-01-13 | 2021-01-13 | Dry-method ultra-clean emission dust removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110045259.8A CN112646946A (en) | 2021-01-13 | 2021-01-13 | Dry-method ultra-clean emission dust removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112646946A true CN112646946A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110045259.8A Pending CN112646946A (en) | 2021-01-13 | 2021-01-13 | Dry-method ultra-clean emission dust removal device |
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| Country | Link |
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| CN (1) | CN112646946A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260322A (en) * | 2006-08-29 | 2008-09-10 | 包头钢铁（集团）有限责任公司 | Blast furnace gas dust removing device and technique by dry method |
| US20110265652A1 (en) * | 2008-05-27 | 2011-11-03 | Synthesis Engery Systems, Inc | Dust Removal Method Using Baghouse Filters And Dust Removal Apparatus Therefor |
| CN102631820A (en) * | 2012-03-30 | 2012-08-15 | 成都易态科技有限公司 | High-temperature flue gas cleaning system |
| CN103332458A (en) * | 2013-06-28 | 2013-10-02 | 中冶南方工程技术有限公司 | Pneumatic conveying system for removing dust and fine ash in dry process of converter gas |
| CN209475803U (en) * | 2019-01-25 | 2019-10-11 | 伽诺(杭州)净化系统装备有限公司 | Full-automatic gas dedusting filter |
| CN214361494U (en) * | 2021-01-13 | 2021-10-08 | 江苏苏仪集团有限公司 | Dry-method ultra-clean emission dust removal device |
-
2021
- 2021-01-13 CN CN202110045259.8A patent/CN112646946A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260322A (en) * | 2006-08-29 | 2008-09-10 | 包头钢铁（集团）有限责任公司 | Blast furnace gas dust removing device and technique by dry method |
| US20110265652A1 (en) * | 2008-05-27 | 2011-11-03 | Synthesis Engery Systems, Inc | Dust Removal Method Using Baghouse Filters And Dust Removal Apparatus Therefor |
| CN102631820A (en) * | 2012-03-30 | 2012-08-15 | 成都易态科技有限公司 | High-temperature flue gas cleaning system |
| CN103332458A (en) * | 2013-06-28 | 2013-10-02 | 中冶南方工程技术有限公司 | Pneumatic conveying system for removing dust and fine ash in dry process of converter gas |
| CN209475803U (en) * | 2019-01-25 | 2019-10-11 | 伽诺(杭州)净化系统装备有限公司 | Full-automatic gas dedusting filter |
| CN214361494U (en) * | 2021-01-13 | 2021-10-08 | 江苏苏仪集团有限公司 | Dry-method ultra-clean emission dust removal device |
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