CN114452804A - Method for treating sludge at bottom of sintering flue gas ammonia desulphurization mother liquor tank - Google Patents
Method for treating sludge at bottom of sintering flue gas ammonia desulphurization mother liquor tank Download PDFInfo
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- CN114452804A CN114452804A CN202210091391.7A CN202210091391A CN114452804A CN 114452804 A CN114452804 A CN 114452804A CN 202210091391 A CN202210091391 A CN 202210091391A CN 114452804 A CN114452804 A CN 114452804A
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- China
- Prior art keywords
- sludge
- flue gas
- mother liquor
- sintering flue
- ammonia desulphurization
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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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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000010802 sludge Substances 0.000 title claims abstract description 60
- 239000012452 mother liquor Substances 0.000 title claims abstract description 46
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 42
- 238000005245 sintering Methods 0.000 title claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000003546 flue gas Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000005273 aeration Methods 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 8
- 238000007254 oxidation reaction Methods 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 5
- 238000005453 pelletization Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a method for treating sludge at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank, which comprises the following steps: stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by adopting a direct current aeration method; a plurality of direct-current aeration devices are arranged at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank; compressed air is introduced through a gas pipe of the direct current aeration device; and stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by using compressed air. The system has the advantages of low investment, flexible arrangement, safety, reliability, small occupied area and the like, can complete the online treatment of sludge by matching with an external sludge precipitation system, does not need additional shutdown maintenance, reduces the shutdown time of equipment, and improves the utilization rate of the equipment. Meanwhile, the solid content of the mother liquor can be reduced, and the oxidation rate of ammonium sulfite is improved, so that the index of discharged particulate matters is reduced, and the aim of high-efficiency production is fulfilled.
Description
Technical Field
The invention relates to the technical field of sintering, in particular to a method for treating sludge at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank.
Background
At present, aiming at the problem of sludge deposition in sintering and pelletizing flue gas ammonia desulfurization tanks, the treatment method of most enterprises in the industry is to stop and arrange maintainers to enter the tanks and clear up sludge in the tanks after an overhaul period is separated, so that the problems of severe operation environment, high construction difficulty, high safety risk and the like exist, the cleaning site is not well controlled, and the surrounding environment is easily influenced.
In summary, the following problems exist in the prior art: how to safely and effectively clean sludge deposited in sintering and pellet flue gas ammonia desulfurization tanks.
Disclosure of Invention
The invention aims to solve the problem of how to safely and effectively clean sludge deposited in sintering and pellet flue gas ammonia desulfurization tanks.
Therefore, the invention provides a method for treating sludge at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank, which comprises the following steps:
and stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by adopting a direct current aeration method.
In particular, the method comprises the following steps of,
a plurality of direct-current aeration devices are arranged at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank;
compressed air is introduced through a gas pipe of the direct current aeration device;
and stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by using compressed air.
Specifically, the direct current aeration apparatus is provided with an inner cylinder and an outer cylinder, the inner cylinder is arranged inside the outer cylinder, and the edge of the inner cylinder is connected with the outer cylinder.
Specifically, the inner barrel is arranged into an upper barrel and a lower barrel, the upper barrel is arranged into a funnel shape, and the lower barrel is arranged into a horn mouth shape.
Specifically, the diameter of the lower end opening of the lower barrel is 1.5-2.5 times of the diameter of the upper end opening of the upper barrel.
Specifically, the gas conveying pipe is arranged at the joint of the upper barrel and the lower barrel.
Specifically, the gas transmission pipe is a high polymer polyethylene or glass fiber reinforced plastic pipe.
Specifically, one end of the gas pipe penetrates through one side of the direct-current aeration device, and the other end of the gas pipe faces to sludge at the bottom of the direct-current aeration device.
Specifically, the pressure of the compressed air is controlled to be 0.2MPa-0.6 MPa.
Specifically, the gas consumption of each direct current aeration device is 0.5-2 m3/min。
The beneficial effects are that: the invention adopts the direct current aeration devices to be uniformly distributed at the bottoms of the sintering and pelletizing flue gas ammonia desulphurization mother liquor tank and the tank, utilizes compressed air as a power source, leads the compressed air to the direct current aeration devices through a high molecular polyethylene or glass steel pipeline, fully stirs the tank and the bottom of the ammonia desulphurization system, realizes that no sludge is precipitated at the bottom of the tank and the tank, and simultaneously oxidizes part of ammonium sulfite into ammonium sulfate. The invention has the advantages of less investment, flexible arrangement, safety, reliability, small occupied area and the like, can complete the online treatment of sludge by matching with an external sludge precipitation system, does not need additional shutdown maintenance, reduces the shutdown time of equipment, improves the utilization rate of the equipment, simultaneously can reduce the solid content of mother liquor and improve the oxidation rate of ammonium sulfite, thereby reducing the index of discharged particulate matters and achieving the aim of high-efficiency production.
Drawings
FIG. 1 is a schematic structural diagram of a single direct current aeration device applied to a treatment method of sludge at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank according to an embodiment of the invention;
FIG. 2 is a layout diagram of a plurality of direct current aeration devices applied to a method for treating sludge at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank, which is provided by the embodiment of the invention.
The reference numbers illustrate:
1. an outer cylinder; 2. an inner barrel; 3. a gas delivery pipe; 4. the bottom of the sintering flue gas ammonia desulphurization mother liquor tank; 5. a direct current aeration main pipe; 10. a direct current aeration device; 21. feeding the cylinder; 22. and (5) discharging the barrel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In an embodiment of the present invention, as shown in fig. 1, there is provided a method for treating sludge at the bottom of a mother liquor tank for sintering flue gas ammonia desulphurization, the method including:
and stirring the sludge deposited at the bottom 4 of the sintering flue gas ammonia desulphurization mother liquor tank by adopting a direct-current aeration method. The sludge deposited at the bottom of the tank and the tank is stirred by the direct current aeration device 10 to form a mixture with the desulfurization mother liquor, and the mixture is conveyed to a sludge sedimentation tank or other storage tanks along with the mother liquor in the daily discharging process of a desulfurization system, so that no sludge deposition exists in the tower, and the sludge content in the mother liquor is also at a lower stable level.
A plurality of direct current aeration devices 10 are arranged at the bottom 4 of the sintering flue gas ammonia desulphurization mother liquor tank; the design of the direct current aeration device adopts a simulated Laval nozzle mode.
Compressed air is introduced through a gas pipe 3 of the direct current aeration device; the sludge is agitated by the pressure of the compressed air. As shown in FIG. 2, compressed air is delivered to the air delivery pipes 3 (straight aeration branch pipes) through the straight aeration parent pipe 5.
And stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by using compressed air. Compressed air with pressure of 0.2-0.6 MPa is used as power source to stir the liquid in the tank continuously, so as to reach the aim of no sludge deposition in the bottom of the tank.
The direct current aeration apparatus is provided with an inner cylinder 2 and an outer cylinder 1, the inner cylinder is provided inside the outer cylinder, and the edge of the inner cylinder is connected with the outer cylinder.
The inner barrel is arranged into an upper barrel 21 and a lower barrel 22, the upper barrel is arranged into a funnel shape, and the lower barrel is arranged into a horn mouth shape. The diameter of the lower end opening of the lower barrel is 1.5-2.5 times of that of the upper end opening of the upper barrel. The upper cylinder 21 is funnel-shaped, so that when compressed air is injected downwards, the slurry on the upper part is easily sucked into the cavity openings of the diameters of the upper cylinder and the lower cylinder, and the lower cylinder 22 is horn-shaped, so that the slurry injected from the upper part and the gas-liquid mixture of the compressed air are stirred to form a larger sludge area at the bottom of the tank.
The gas pipe 3 is arranged at the joint of the upper barrel and the lower barrel.
The gas pipe 3 is a high-molecular polyethylene or glass fiber reinforced plastic pipe, is light and corrosion-resistant.
One end of the gas pipe penetrates through one side of the direct-current aeration device, and the gas pipe is connected with the side wall of the direct-current aeration device through a flange. The other end of the gas pipe faces the sludge at the bottom of the direct current aeration device. The gas pipe extends into the middle of the inner barrel at the middle part above the upper barrel and is positioned at the joint of the upper barrel and the lower barrel.
And controlling the pressure of the compressed air to be 0.2-0.6 Mpa. Is beneficial to effectively stirring the sludge.
The gas consumption of each direct current aeration device is 0.5-2 m3And the flow is suitable for sintering and pelletizing flue gas ammonia desulphurization mother liquor tanks.
The invention adopts the direct current aeration devices to be uniformly distributed at the bottoms of the sintering and pelletizing flue gas ammonia desulphurization mother liquor tank and the tank, utilizes compressed air as a power source, leads the compressed air to the direct current aeration devices through a high molecular polyethylene or glass steel pipeline, fully stirs the tank and the bottom of the ammonia desulphurization system, realizes that no sludge is precipitated at the bottom of the tank and the tank, and simultaneously oxidizes part of ammonium sulfite into ammonium sulfate. The device has the advantages of low investment, flexible arrangement, safety, reliability, small occupied area and the like, can complete the online treatment of sludge by matching with an external sludge settling system, does not need extra shutdown maintenance, reduces the shutdown time of equipment, improves the utilization rate of the equipment, can reduce the solid content of mother liquor, improves the oxidation rate of ammonium sulfite, thereby reducing the index of discharged particulate matters and achieving the aim of high-efficiency production.
Example 1:
a treatment method applied to sludge at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank is shown in figure 1, the treatment method is applied to sludge stirring and slurry oxidation at the bottom 4 of the sintering and pelletizing flue gas ammonia desulphurization mother liquor tank, sludge deposited at the bottom of the tank and the tank is stirred by a direct-current aeration device 10 to form a mixture with desulphurization mother liquor, the mixture is conveyed to a sludge sedimentation tank or other storage tanks along with the mother liquor in the daily discharging process of a desulphurization system, no sludge deposition exists in a tower, the sludge content in the mother liquor is also at a lower stable level, meanwhile, a medium for direct-current aeration is compressed air, and oxygen in the compressed air can oxidize part of ammonium sulfite in the mother liquor in the aeration stirring process, so that the effect of enhancing sulfite oxidation is achieved.
The direct current aeration device adopted by the invention consists of an inner cylinder and an outer cylinder, the direct current aeration device is made of high polymer polyethylene or glass fiber reinforced plastic, the outer cylinder is an aeration device supporting framework, the inner cylinder is divided into two parts, namely an upper cylinder diameter and a lower cylinder diameter, the upper cylinder diameter is funnel-shaped, the lower cylinder diameter is horn mouth-shaped, the diameter of a lower port of the lower cylinder diameter is about 1.5-2.5 times of that of an upper port of the upper cylinder diameter, and a compressed air pipe is connected to the joint of the upper cylinder diameter and the lower cylinder diameter.
As shown in figure 2, the invention uses the direct current aeration device to be uniformly arranged at the bottom of the tank and the lower part of the tank, the bottom of the aeration device is 35cm away from the bottom plate of the tank and the tank, and the solution at the bottom of the tank and the tank is fully stirred by using compressed air of 0.2Mpa to 0.6Mpa as an aeration medium and a power source.
The invention adopts the direct current aeration devices which are uniformly distributed at the bottoms of the tank and the tank, uses compressed air with the pressure of 0.2-0.6 Mpa as a power source, leads the compressed air to the direct current aeration devices through a high polymer polyethylene or glass steel pipeline (a gas pipe), fully stirs the tank and the bottom of the ammonia desulphurization system, realizes that the bottom of the tank and the tank has no sludge precipitation, and part of ammonium sulfite is simultaneously oxidized into ammonium sulfate. The technology has the advantages of low investment, flexible arrangement, safety, reliability, small occupied area and the like, can complete the online treatment of sludge in a tank (tank) by matching with an external sludge settling system, does not need extra shutdown maintenance, reduces the shutdown time of equipment, improves the utilization rate of the equipment, can reduce the solid content of mother liquor, improves the oxidation rate of ammonium sulfite, thereby reducing the index of discharged particulate matters and achieving the aim of high-efficiency production.
Before the device is put into use, the solid content of mother liquor in a tank and a tank is 10-12%, and the primary oxidation rate of slurry is 70-80%; after the device is used, the solid content of the mother liquor in the tank and the tank can be stabilized at 0.05 percent for a long time, the primary oxidation rate of the slurry can be stably improved to 85-90 percent, and the discharged particulate matters of the system can be synchronously reduced by 3-5 mg/Nm3。
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. In order that the components of the present invention may be combined without conflict, it is within the scope of the present invention that any person skilled in the art may make equivalent changes and modifications without departing from the spirit and principle of the present invention.
Claims (10)
1. The method for treating the sludge at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank is characterized by comprising the following steps of:
and stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by adopting a direct-current aeration method.
2. The method for treating the sludge at the bottom of the mother liquid tank for the ammonia desulphurization of the sintering flue gas according to claim 1,
a plurality of direct-current aeration devices are arranged at the bottom of a sintering flue gas ammonia desulphurization mother liquor tank;
compressed air is introduced through a gas pipe of the direct current aeration device;
and stirring the sludge deposited at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank by using compressed air.
3. The method for treating the sludge at the bottom of the mother liquid tank for the ammonia desulphurization of the sintering flue gas as recited in claim 2, wherein the direct current aeration device is provided with an inner cylinder and an outer cylinder, the inner cylinder is arranged inside the outer cylinder, and the edge of the inner cylinder is connected with the outer cylinder.
4. The method for treating the sludge at the bottom of the mother liquid tank for the ammonia desulphurization of the sintering flue gas as recited in claim 3, wherein the inner cylinder is arranged into an upper cylinder and a lower cylinder, the upper cylinder is arranged into a funnel shape, and the lower cylinder is arranged into a bell mouth shape.
5. The method for treating the sludge at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank according to claim 4, wherein the diameter of the lower port of the lower cylinder is 1.5-2.5 times of the diameter of the upper port of the upper cylinder.
6. The method for treating the sludge at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank according to claim 4, characterized by further comprising the following steps: and in the daily discharging process of the desulfurization system, the stirred sludge is conveyed to a sludge sedimentation tank or other storage tanks together with the mother liquor.
7. The method for treating the sludge at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank as claimed in claim 1, wherein the gas transmission pipe is a high molecular polyethylene or glass steel pipe.
8. The method for treating the sludge at the bottom of the mother liquid tank for the ammonia desulphurization of the sintering flue gas as claimed in claim 1, wherein one end of the gas pipe is penetrated through one side of the direct-flow aeration device, and the other end of the gas pipe is directed towards the sludge at the bottom of the direct-flow aeration device.
9. The method for treating the sludge at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank as claimed in claim 1, wherein the pressure of the compressed air is controlled to be 0.2Mpa-0.6 Mpa.
10. The method for treating the sludge at the bottom of the sintering flue gas ammonia desulphurization mother liquor tank according to claim 1, wherein the gas consumption of each direct-flow aeration device is 0.5-2 m3/min。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091391.7A CN114452804A (en) | 2022-01-26 | 2022-01-26 | Method for treating sludge at bottom of sintering flue gas ammonia desulphurization mother liquor tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091391.7A CN114452804A (en) | 2022-01-26 | 2022-01-26 | Method for treating sludge at bottom of sintering flue gas ammonia desulphurization mother liquor tank |
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| CN114452804A true CN114452804A (en) | 2022-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832448A (en) * | 2022-04-14 | 2022-08-02 | 柳州钢铁股份有限公司 | Treatment method for ammonia desulphurization solution sludge precipitation in steel industry |
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| JPH1043797A (en) * | 1996-07-30 | 1998-02-17 | Penta Techno Service Kk | Aerating and agitating device of domestic animal dung |
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| CN101474524A (en) * | 2008-10-28 | 2009-07-08 | 无锡高达环境科技有限公司 | Oxidation tower for desulfuration of flue gas by ammonia process |
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| CN203829913U (en) * | 2013-12-27 | 2014-09-17 | 云南铝业股份有限公司 | Dust treatment device for ammonia flue gas desulphurization |
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2022
- 2022-01-26 CN CN202210091391.7A patent/CN114452804A/en active Pending
Patent Citations (7)
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| GB1063388A (en) * | 1963-09-23 | 1967-03-30 | Atomic Energy Authority Uk | Storage tanks for liquids |
| CN87206301U (en) * | 1987-04-14 | 1987-11-25 | 核工业部第二研究设计院 | Mixing air blaster with jet-pipe |
| JPH1043797A (en) * | 1996-07-30 | 1998-02-17 | Penta Techno Service Kk | Aerating and agitating device of domestic animal dung |
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| CN203829913U (en) * | 2013-12-27 | 2014-09-17 | 云南铝业股份有限公司 | Dust treatment device for ammonia flue gas desulphurization |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832448A (en) * | 2022-04-14 | 2022-08-02 | 柳州钢铁股份有限公司 | Treatment method for ammonia desulphurization solution sludge precipitation in steel industry |
| CN114832448B (en) * | 2022-04-14 | 2023-03-24 | 柳州钢铁股份有限公司 | Treatment method for ammonia desulphurization solution sludge precipitation in steel industry |
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