CN212523640U - Metal sludge sintering flue gas treatment system - Google Patents
Metal sludge sintering flue gas treatment system Download PDFInfo
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- CN212523640U CN212523640U CN202020939310.0U CN202020939310U CN212523640U CN 212523640 U CN212523640 U CN 212523640U CN 202020939310 U CN202020939310 U CN 202020939310U CN 212523640 U CN212523640 U CN 212523640U
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- flue gas
- storage tank
- dust collector
- dry
- reactor
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000003546 flue gas Substances 0.000 title claims abstract description 69
- 239000010802 sludge Substances 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 238000005245 sintering Methods 0.000 title claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 17
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 17
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 17
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 12
- 238000010791 quenching Methods 0.000 claims abstract description 12
- 230000000171 quenching effect Effects 0.000 claims abstract description 11
- 239000007921 spray Substances 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006477 desulfuration reaction Methods 0.000 abstract description 3
- 230000023556 desulfurization Effects 0.000 abstract description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000012719 wet electrostatic precipitator Substances 0.000 description 1
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Abstract
The utility model relates to a sludge treatment device, concretely relates to metal sludge sintering flue gas processing system. The metal sludge sintering flue gas treatment system comprises a semi-dry type quenching absorption tower, a dry type reactor, a bag-type dust collector, a flue gas heat exchanger, a spray tower, a wet type electrostatic dust collector, an induced draft fan and a chimney which are sequentially connected, wherein the dry type reactor is connected with an annular fan, a slaked lime storage tank and an activated carbon storage tank are arranged on a flue between the annular fan and the dry type reactor, star-shaped discharge valves are arranged below the slaked lime storage tank and the activated carbon storage tank, and the flue gas heat exchanger is connected with the SCR reactor. The utility model discloses can effectively carry out denitration, desulfurization and dust removal to the flue gas, solve the poor problem of current flue gas processing system treatment effect.
Description
Technical Field
The utility model relates to a sludge treatment device, concretely relates to metal sludge sintering flue gas processing system.
Background
The metal sludge comprises stainless steel sludge and electroplating sludge, the main components of the metal sludge are ferric oxide, chromium oxide, nickel oxide, calcium fluoride and a small amount of other heavy metal elements, and the metal sludge also contains a large amount of physical water and a small amount of crystal water and combination water. For the metal sludge, generally, metal elements in the metal sludge are leached out through acid dissolution, filter pressing is carried out to obtain filtrate and filter residue, and then the filtrate is treated to separate the metal elements; the filter residue is treated by a pyrogenic process and is sent into a rotary kiln for sintering, and sintering flue gas is generated in the sintering process.
Chinese patent CN 206778128U discloses a waste gas treatment system for metal sludge smelting, which comprises a cyclone dust collector, a quencher, a bag-type dust collector, an activated carbon adsorption tower and a spray tower, which are connected in sequence, wherein the spray tower is connected with a chimney for flue gas emission. However, the treatment effect is limited, a large part of harmful gas remains, and the current environmental protection requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
According to the not enough among the prior art above, the utility model provides a metal sludge sintering flue gas processing system can effectively carry out denitration, desulfurization and dust removal to the flue gas, has solved the poor problem of current flue gas processing system treatment effect.
The utility model provides a technical scheme that its technical problem adopted is:
the metal sludge sintering flue gas treatment system comprises a semi-dry type quenching absorption tower, a dry type reactor, a bag-type dust collector, a flue gas heat exchanger, a spray tower, a wet type electrostatic dust collector, an induced draft fan and a chimney which are sequentially connected, wherein the dry type reactor is connected with an annular fan, a slaked lime storage tank and an activated carbon storage tank are arranged on a flue between the annular fan and the dry type reactor, star-shaped discharge valves are arranged below the slaked lime storage tank and the activated carbon storage tank, and the flue gas heat exchanger is connected with the SCR reactor.
Preferably, a two-fluid nozzle is arranged in the semi-dry type quenching absorption tower, and the two-fluid nozzle is respectively connected with a compressed air pipeline and an alkali solution input pipeline.
Preferably, the bag-type dust collector is a high-temperature-resistant bag-type dust collector. If the temperature of the flue gas is too high, the cloth bag can be damaged at high temperature.
The working principle and the process are as follows:
the temperature of a sintering flue gas outlet of the rotary kiln is 300-400 ℃, and in order to reduce the possibility of dioxin resynthesis, a semi-dry quenching absorption tower is adopted to reduce the temperature of the flue gas, so that the temperature of the flue gas is instantly reduced to below 200 ℃ from 300-400 ℃. The alkali solution is stored in a semi-dry pool and is conveyed into a semi-dry quenching absorption tower through a double-fluid nozzle by an alkali solution input pipeline, the alkali solution is atomized into fine fog drops by the double-fluid nozzle, the atomized alkali solution fog drops form a high-density area with suspended alkali fog drops near the nozzle, high-temperature flue gas enters from the top, and acidic substances in the flue gas undergo a neutralization reaction when passing through the area.
The cooled flue gas enters a dry reactor for flue gas purification, slaked lime in a slaked lime storage tank and activated carbon in an activated carbon storage tank are conveyed by a star-shaped discharge valve, the mixture is blown up in the dry reactor by high-pressure air generated by an annular fan, the boiled slaked lime and activated carbon powder react with the flue gas for deacidification and denitration, and dioxin and SO in the absorbed flue gas are removed2Acid components such as HCl and NOx and a small amount of heavy metal.
After the flue gas comes out of the dry reactor, the flue gas enters a bag-type dust remover, dust, active carbon and slaked lime powder are intercepted, and the slag is discharged by a spiral ash discharging machine.
The flue gas discharged from the bag-type dust collector enters a flue gas heat exchanger, the temperature of the flue gas cooled to 200 ℃ is raised to 250-350 ℃ again, the flue gas after temperature rise enters an SCR reactor to reduce and remove NOx in the flue gas again, and meanwhile, the temperature of the flue gas is reduced to 200 ℃.
And introducing the denitrated flue gas into a spray tower (spraying alkali liquor) for further deacidification and dust removal, further removing dust by a wet electrostatic dust collector, and discharging the flue gas after reaching the standard through a chimney by an induced draft fan.
Compared with the prior art, the utility model, following beneficial effect has:
metal sludge sintering flue gas processing system, can effectively carry out denitration, desulfurization and dust removal to the flue gas, solved the poor problem of current flue gas processing system treatment effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. a semi-dry quench absorption tower; 2. a dry reactor; 3. a bag-type dust collector; 4. a flue gas heat exchanger; 5. a spray tower; 6. a wet electrostatic precipitator; 7. an induced draft fan; 8. a chimney; 9. an annular fan; 10. a slaked lime storage tank; 11. an activated carbon storage tank; 12. a star-shaped discharge valve; 13. an SCR reactor; 14. a two-fluid nozzle; 15. a compressed air line; 16. the caustic solution is fed into the pipeline.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 1, the metal sludge sintering flue gas treatment system comprises a semi-dry quenching absorption tower 1, a dry reactor 2, a bag-type dust collector 3, a flue gas heat exchanger 4, a spray tower 5, a wet electrostatic dust collector 6, an induced draft fan 7 and a chimney 8 which are connected in sequence, wherein the dry reactor 2 is connected with an annular fan 9, a slaked lime storage tank 10 and an activated carbon storage tank 11 are arranged on a flue between the annular fan 9 and the dry reactor 2, a star-shaped discharge valve 12 is arranged below the slaked lime storage tank 10 and the activated carbon storage tank 11, and the flue gas heat exchanger 4 is connected with an SCR reactor 13.
The semi-dry type quenching absorption tower 1 is internally provided with a double-fluid nozzle 14, and the double-fluid nozzle 14 is respectively connected with a compressed air pipeline 15 and an alkali solution input pipeline 16.
The bag-type dust collector 3 is a high-temperature-resistant bag-type dust collector 3. If the temperature of the flue gas is too high, the cloth bag can be damaged at high temperature.
The temperature of a sintering flue gas outlet of the rotary kiln is 300-400 ℃, and in order to reduce the possibility of dioxin resynthesis, the temperature of the flue gas is reduced by adopting a semi-dry quenching absorption tower 1, so that the temperature of the flue gas is instantly reduced to below 200 ℃ from 300-400 ℃. The alkali solution is stored in a semi-dry pool and is sent into the semi-dry quenching absorption tower 1 through a double-fluid nozzle 14 by an alkali solution input pipeline 16, the alkali solution is atomized into fine fog drops by the double-fluid nozzle 14, the atomized alkali solution fog drops form a high-density area with suspended alkali fog drops near the nozzle, high-temperature flue gas enters from the top, and acidic substances in the flue gas undergo a neutralization reaction when passing through the area.
The cooled flue gas enters a dry reactor 2 for flue gas purification, slaked lime in a slaked lime storage tank 10 and activated carbon in an activated carbon storage tank 11 are conveyed by a star-shaped discharge valve 12, the mixture is blown up in the dry reactor 2 by high-pressure air generated by an annular fan 9, the boiled slaked lime and activated carbon powder react with the flue gas for deacidification and denitration, and dioxin and SO in the absorbed flue gas are removed2Acid components such as HCl and NOx and a small amount of heavy metal.
After the flue gas comes out of the dry reactor 2, the flue gas enters a bag-type dust collector 3, dust, active carbon and slaked lime powder are intercepted, and the slag is discharged by a spiral ash discharging machine.
The flue gas discharged from the bag-type dust collector 3 enters a flue gas heat exchanger 4, the temperature of the flue gas cooled to 200 ℃ is raised to 250-350 ℃ again, the flue gas heated up enters an SCR reactor 13 to reduce and remove NOx in the flue gas again, and meanwhile, the temperature of the flue gas is reduced to 200 ℃.
And introducing the denitrated flue gas into a spray tower 5 (spraying alkali liquor) for further deacidification and dust removal, further removing dust by a wet electrostatic dust collector 6, and discharging the flue gas through a chimney 8 by an induced draft fan 7.
Claims (3)
1. The utility model provides a metal sludge sintering flue gas processing system which characterized in that: the device comprises a semi-dry type quenching absorption tower (1), a dry reactor (2), a bag-type dust collector (3), a flue gas heat exchanger (4), a spray tower (5), a wet type electrostatic dust collector (6), an induced draft fan (7) and a chimney (8) which are sequentially connected, wherein an annular fan (9) is connected to the dry reactor (2), a slaked lime storage tank (10) and an active carbon storage tank (11) are arranged on a flue between the annular fan (9) and the dry reactor (2), a star-shaped discharge valve (12) is arranged below the slaked lime storage tank (10) and the active carbon storage tank (11), and the flue gas heat exchanger (4) is connected with an SCR reactor (13).
2. The metal sludge sintering flue gas treatment system according to claim 1, wherein: the semi-dry type quenching absorption tower (1) is internally provided with a double-fluid nozzle (14), and the double-fluid nozzle (14) is respectively connected with a compressed air pipeline (15) and an alkali solution input pipeline (16).
3. The metal sludge sintering flue gas treatment system according to claim 1, wherein: the bag-type dust collector (3) is a high-temperature-resistant bag-type dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939310.0U CN212523640U (en) | 2020-05-27 | 2020-05-27 | Metal sludge sintering flue gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020939310.0U CN212523640U (en) | 2020-05-27 | 2020-05-27 | Metal sludge sintering flue gas treatment system |
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| Publication Number | Publication Date |
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| CN212523640U true CN212523640U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020939310.0U Active CN212523640U (en) | 2020-05-27 | 2020-05-27 | Metal sludge sintering flue gas treatment system |
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| Country | Link |
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| CN (1) | CN212523640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228242A (en) * | 2022-07-23 | 2022-10-25 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
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2020
- 2020-05-27 CN CN202020939310.0U patent/CN212523640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228242A (en) * | 2022-07-23 | 2022-10-25 | 中山市格源环保设备有限公司 | Aluminum product paint spraying organic waste gas treatment system and flue gas purification method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231106 Address after: 4th Floor, Building A, High tech Entrepreneurship Service Center, Economic Development Zone, Zichuan District, Zibo City, Shandong Province, 255100 Patentee after: Weihangli Biotechnology (Shandong) Co.,Ltd. Address before: 255000 room 707, Huaqiao building, 200m south of the intersection of Beijing Road and Huaguang Road, Zhangdian District, Zibo City, Shandong Province Patentee before: Shandong likeqing Environmental Protection Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |