CN105268306A - Low-concentration sulfur dioxide smelting off-gas desulphurization device and method - Google Patents
Low-concentration sulfur dioxide smelting off-gas desulphurization device and method Download PDFInfo
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- CN105268306A CN105268306A CN201510816533.1A CN201510816533A CN105268306A CN 105268306 A CN105268306 A CN 105268306A CN 201510816533 A CN201510816533 A CN 201510816533A CN 105268306 A CN105268306 A CN 105268306A
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- China
- Prior art keywords
- sulfur dioxide
- caustic soda
- liquid caustic
- flue gas
- tailings slurry
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- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 238000003723 Smelting Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 216
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 239000002002 slurry Substances 0.000 claims abstract description 72
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 72
- 238000010521 absorption reaction Methods 0.000 claims abstract description 54
- 239000003546 flue gas Substances 0.000 claims description 63
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 61
- 230000003009 desulfurizing effect Effects 0.000 claims description 38
- 239000007921 spray Substances 0.000 claims description 22
- 230000008676 import Effects 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000010808 liquid waste Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The invention discloses a low-concentration sulfur dioxide smelting off-gas desulphurization device and method. The device comprises a tailing slurry underground tank, a desulphurization tower, a postabsorptive tailing slurry underground tank, a liquid caustic soda security absorption tower and an alkali preparation tank. By the adoption of the device, tailing slurry generated through beneficiation is conveyed into the desulphurization tower to serve as a desulphurization agent, so that a traditional desulphurization agent is replaced, acid gas sulfur dioxide in low-concentration sulfur dioxide smelting off-gas is absorbed through active components in the tailing slurry, the content of the sulfur dioxide in the off-gas is detected after absorption, and the sulfur dioxide is exhausted after detection is qualified; if detection is not qualified, the sulfur dioxide in the off-gas is continuously absorbed through liquid caustic soda in the liquid caustic soda security absorption tower and then is exhausted, hence, the sulfur dioxide in the low-concentration sulfur dioxide smelting off-gas can be effectively removed, and the desulphurization effect is obvious. The dosage of the traditional desulphurization agent can be greatly reduced while it is guaranteed that the off-gas is up to the standard to be exhausted, the operating cost of the system is lowered, discharge of new solid waste and liquid waste in the desulphurization process is avoided, and finally the purpose of waste control by waste is achieved.
Description
Technical field
The invention belongs to smelting, chemical industry, technical field of beneficiation, be specifically related to a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer and method.
Background technology
In the smelting process of sulphide ore, usually can produce a large amount of containing SO
2flue gas during smelting, serious pollution is caused to surrounding enviroment, along with country is more and more stricter to the requirement of environmental protection, higher requirement is it is also proposed to smelting system environmental protection, not only will realize SO in high concentration flue gas during smelting
2qualified discharge, and SO in low concentration, extremely low concentration flue gas during smelting to be realized
2qualified discharge.Low concentration SO
2flue gas during smelting has large-minded, SO
2concentration is low, and the feature such as fluctuate larger, the environmental protection gas collection mainly in smelt production, and current processing method is relatively more extensive, comprises limestone vegetation method, ionic liquid method, activated coke method, alkali absorb method etc., technical maturity.But because flue gas during smelting amount is large, needed raw material amount is large, and processing cost is higher, and produce new solid waste in processing procedure, liquid gives up.
Summary of the invention
The object of the invention is to solve the technical problem existed in prior art, providing that a kind of desulfurization degree is high, cost is low, free of contamination low-concentration sulfur dioxide flue gas during smelting desulfurizer.
Another object of the present invention is to provide a kind of low-concentration sulfur dioxide flue gas during smelting sulfur method.
In order to achieve the above object, the present invention is by the following technical solutions: a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer, comprise Tailings Slurry underground tank, desulfurizing tower, Tailings Slurry underground tank after absorbing, liquid caustic soda security personnel absorption tower and alkali-prepared tank, described Tailings Slurry underground tank is connected with the Tailings Slurry entrance being positioned at desulfurizing tower bottom, the bottom of described desulfurizing tower is also connected with the top spray equipment in desulfurizing tower by circulating pump, the Tailings Slurry outlet of described desulfurizing tower is connected with Tailings Slurry underground tank after absorption, the middle and lower part of described desulfurizing tower is provided with the import of low-concentration sulfur dioxide flue gas during smelting, the lower entrances on the top of described desulfurizing tower is provided with exhaust outlet and exhaust outlet is ensured public security with exhaust emission pipeline and liquid caustic soda respectively absorption tower is connected, the lower entrances on described liquid caustic soda security personnel absorption tower and exhaust emission pipeline are respectively equipped with chain stop valve, described chain stop valve is connected with the outlet sulfur dioxide concentration detector being arranged on exhaust ports, the bottom on described liquid caustic soda security personnel absorption tower is also connected with the top liquid caustic soda spray equipment that liquid caustic soda is ensured public security in absorption tower by liquid caustic soda circulating pump, described liquid caustic soda security personnel absorption tower is connected with alkali-prepared tank, the top on described liquid caustic soda security personnel absorption tower is connected with exhaust emission pipeline, described exhaust emission pipeline is connected with blower fan.
Further, described low-concentration sulfur dioxide flue gas during smelting import department is provided with entrance sulfur dioxide concentration detector.
Further, after described absorption, Tailings Slurry underground tank is connected with ore dressing tail storehouse by slush pump.
Further, described circulating pump is two groups.
Further, described liquid caustic soda circulating pump is two groups.
A kind of low-concentration sulfur dioxide flue gas during smelting sulfur method, the method comprises the following steps:
A, by ore dressing produce Tailings Slurry be delivered to Tailings Slurry underground tank after Tailings Slurry is delivered to desulfurizing tower by Tailings Slurry entrance;
B, ON cycle pump, top spray equipment Tailings Slurry is delivered in desulfurizing tower by circulating pump spray and under, sulfur dioxide in flue gas absorbs with low-concentration sulfur dioxide flue gas during smelting counter current contacting from bottom to top from desulfurizing tower, the basic activated component in Tailings Slurry by Tailings Slurry;
C, be delivered to when the Tailings Slurry pH value after absorbing reaches 6.5-7.5 absorb after Tailings Slurry underground tank, and be delivered in ore dressing tail storehouse through slush pump;
D, by outlet sulfur dioxide concentration detector, the sulfur dioxide concentration in the low-concentration sulfur dioxide flue gas during smelting of exhaust ports after Tailings Slurry absorbs to be detected, detect qualified after, chain stop valve opens to the pipeline of exhaust emission pipeline, and flue gas is directly discharged from exhaust emission pipeline;
E, liquid caustic soda in prior alkali-prepared tank enters in liquid caustic soda security personnel absorption tower, when detecting defective, chain stop valve is cut to the pipeline of exhaust emission pipeline, open to the pipeline of liquid caustic soda security personnel absorption tower lower entrances, flue gas enters in liquid caustic soda security personnel absorption tower by the lower entrances on liquid caustic soda security personnel absorption tower, open liquid caustic soda circulating pump, liquid caustic soda from liquid caustic soda spray equipment spray and, with ensure public security absorption tower from liquid caustic soda in flue gas adverse current from bottom to top contact and continue to absorb the sulfur dioxide in flue gas, flue gas after absorbing by liquid caustic soda is discharged from exhaust emission pipeline through the top on liquid caustic soda security personnel absorption tower.
Hinge structure of the present invention has following beneficial effect: low-concentration sulfur dioxide flue gas during smelting desulfurizer of the present invention mainly comprises Tailings Slurry underground tank after Tailings Slurry underground tank, desulfurizing tower, absorption, liquid caustic soda security personnel absorption tower and alkali-prepared tank, the Tailings Slurry that ore dressing produces is delivered to as desulfurizing agent in desulfurizing tower by it, and Tailings Slurry contains a certain amount of MgO, CaO, Al
2o
3, Fe
2o
3etc. basic activated composition, instead of traditional desulfurizing agent, utilize the sour gas sulfur dioxide in the basic activated ingredient draws low-concentration sulfur dioxide flue gas during smelting in Tailings Slurry, after absorption, the content of sulfur dioxide in flue gas is detected, detect qualified rear discharge, if detect defective, discharge again after continuing to absorb the sulfur dioxide in flue gas by the liquid caustic soda in liquid caustic soda security personnel absorption tower, can effectively by the sulfur dioxide removal in low-concentration sulfur dioxide flue gas during smelting, desulfurized effect is obvious, while guaranteeing flue gas qualified discharge, can significantly reduce traditional doctor solution consumption, reduce system operation cost, avoid solid waste new in sweetening process, the discharge that liquid is useless, finally achieve the object of the treatment of wastes with processes of wastes against one another.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Reference numeral implication of the present invention is as follows: 1, Tailings Slurry underground tank; 2, Tailings Slurry underground tank after absorbing; 3, circulating pump; 4, desulfurizing tower; 5, liquid caustic soda circulating pump; 6, blower fan; 7, alkali-prepared tank; 8, liquid caustic soda security personnel absorption tower; 9, chain stop valve; 10, sulfur dioxide concentration detector is exported; 11, entrance sulfur dioxide concentration detector; 12, top spray equipment; 13, low-concentration sulfur dioxide flue gas during smelting import; 14, exhaust outlet; 15, exhaust emission pipeline; 16, top liquid caustic soda spray equipment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
As shown in Figure 1, a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer, comprise Tailings Slurry underground tank 1, desulfurizing tower 4, Tailings Slurry underground tank 2 after absorbing, liquid caustic soda security personnel absorption tower 8 and alkali-prepared tank 7, Tailings Slurry underground tank 1 is connected with the Tailings Slurry entrance being positioned at desulfurizing tower 4 bottom, the bottom of desulfurizing tower 4 is also connected with the top spray equipment 12 in desulfurizing tower 4 by two groups of circulating pumps 3, the Tailings Slurry outlet of desulfurizing tower 4 is connected with Tailings Slurry underground tank 2 after absorption, after absorbing, Tailings Slurry underground tank 2 is connected with ore dressing tail storehouse by slush pump, the middle and lower part of desulfurizing tower 4 is provided with low-concentration sulfur dioxide flue gas during smelting import 13, low-concentration sulfur dioxide flue gas during smelting import 13 place is provided with entrance sulfur dioxide concentration detector 11, the lower entrances on the top of desulfurizing tower 4 is provided with exhaust outlet 14 and exhaust outlet 14 is ensured public security with exhaust emission pipeline 15 and liquid caustic soda respectively absorption tower 8 is connected, the lower entrances on liquid caustic soda security personnel absorption tower 8 and exhaust emission pipeline 15 are respectively equipped with chain stop valve 9, chain stop valve 9 is connected with the outlet sulfur dioxide concentration detector 10 being arranged on exhaust outlet 14 place, the top liquid caustic soda spray equipment 16 also ensured public security in absorption tower 8 by two groups of liquid caustic soda circulating pumps 5 and liquid caustic soda in the bottom on liquid caustic soda security personnel absorption tower 8 is connected, liquid caustic soda security personnel absorption tower 8 is connected with alkali-prepared tank 7, the top on liquid caustic soda security personnel absorption tower 8 is connected with exhaust emission pipeline 15, exhaust emission pipeline 15 is connected with blower fan 6.
Above-mentioned low-concentration sulfur dioxide flue gas during smelting desulfurizer is used for, in certain mining and metallurgy refining unit normal productive process, specifically comprise the following steps: after the Tailings Slurry that ore dressing produces is delivered to Tailings Slurry underground tank 1, Tailings Slurry is delivered to desulfurizing tower 4 by Tailings Slurry entrance; ON cycle pump 3, by circulating pump 3 by Tailings Slurry the top spray equipment 12 be delivered in desulfurizing tower 4 spray and under, Tailings Slurry and low-concentration sulfur dioxide flue gas during smelting (sulfur dioxide concentration: 285mg/Nm from bottom to top from desulfurizing tower 4
3-2285mg/Nm
3, mean concentration is 1518mg/Nm
3, exhaust gas volumn: 82850Nm
3/ h-171119Nm
3/ h, average tolerance is 110000Nm
3/ h) counter current contacting, the sulfur dioxide in flue gas absorbs by the basic activated component in Tailings Slurry; Tailings Slurry pH value after absorption reaches 6.5-7.5(and is down to 7.02 by 9.88) time be delivered to absorb after Tailings Slurry underground tank 2, and be delivered in ore dressing tail storehouse through slush pump; Detected by the sulfur dioxide concentration exported in the low-concentration sulfur dioxide flue gas during smelting of sulfur dioxide concentration detector 10 pairs of exhaust outlet 14 places after Tailings Slurry absorbs, testing result is SO
2concentration remains on 100mg/Nm substantially
3below, meet qualified discharge standard, chain stop valve 9 opens to the pipeline of exhaust emission pipeline 15, and flue gas is directly discharged from exhaust emission pipeline 15.
Embodiment 2
The low-concentration sulfur dioxide flue gas during smelting desulfurizer of the present embodiment is with embodiment 1, when using it for that the fluctuation of certain mining and metallurgy refining unit flue gas during smelting is comparatively large, sulfur dioxide exceeds concentration for the treatment of, specifically comprise the following steps: after the Tailings Slurry that ore dressing produces is delivered to Tailings Slurry underground tank 1, Tailings Slurry is delivered to desulfurizing tower 4 by Tailings Slurry entrance; ON cycle pump 3, by circulating pump 3 by Tailings Slurry the top spray equipment 12 be delivered in desulfurizing tower 4 spray and under, Tailings Slurry and low-concentration sulfur dioxide flue gas during smelting (sulfur dioxide concentration: 1428mg/Nm from bottom to top from desulfurizing tower 4
3-7985mg/Nm
3, mean concentration: 4380mg/Nm
3; Exhaust gas volumn: 73418Nm
3/ h-89256Nm
3/ h, average tolerance: 82395Nm
3/ h) counter current contacting, the sulfur dioxide in flue gas absorbs by the basic activated component in Tailings Slurry; Tailings Slurry pH value after absorption reaches 6.5-7.5(and is down to 6.53 by 9.88) time be delivered to absorb after Tailings Slurry underground tank 2, and be delivered in ore dressing tail storehouse through slush pump; Detected by the sulfur dioxide concentration exported in the low-concentration sulfur dioxide flue gas during smelting of sulfur dioxide concentration detector 10 pairs of exhaust outlet 14 places after Tailings Slurry absorbs, testing result is that flue gas concentration is more than 3500mg/Nm
3, SO
2concentration is more than 400mg/Nm
3, do not meet qualified discharge standard.In advance the liquid caustic soda (be by concentration the liquid caustic soda transport pump of 32% to alkali-prepared tank 7, add water and be mixed with the sig water that concentration is 10.7%) in alkali-prepared tank 7 is entered in liquid caustic soda security personnel absorption tower 8, SO
2when concentration does not meet qualified discharge standard, chain stop valve 9 is cut to the pipeline of exhaust emission pipeline 15, open to the pipeline of liquid caustic soda security personnel absorption tower 8 lower entrances, flue gas enters in liquid caustic soda security personnel absorption tower 8 by the lower entrances on liquid caustic soda security personnel absorption tower 8, open liquid caustic soda circulating pump 5, liquid caustic soda from liquid caustic soda spray equipment 16 spray and, with ensure public security absorption tower 8 from liquid caustic soda in flue gas adverse current from bottom to top contact and continue to absorb the sulfur dioxide in flue gas, (flue gas concentration remains on 60mg/Nm to the flue gas after absorbing by liquid caustic soda
3below, qualified discharge standard is met) discharge from exhaust emission pipeline 15 through the top on liquid caustic soda security personnel absorption tower 8.
Claims (6)
1. a low-concentration sulfur dioxide flue gas during smelting desulfurizer, it is characterized in that: comprise Tailings Slurry underground tank (1), desulfurizing tower (4), Tailings Slurry underground tank (2) after absorbing, liquid caustic soda security personnel absorption tower (8) and alkali-prepared tank (7), described Tailings Slurry underground tank (1) is connected with the Tailings Slurry entrance being positioned at desulfurizing tower (4) bottom, the bottom of described desulfurizing tower (4) is also connected with the top spray equipment (12) in desulfurizing tower (4) by circulating pump (3), the Tailings Slurry outlet of described desulfurizing tower (4) is connected with Tailings Slurry underground tank (2) after absorption, the middle and lower part of described desulfurizing tower (4) is provided with low-concentration sulfur dioxide flue gas during smelting import (13), the lower entrances on the top of described desulfurizing tower (4) is provided with exhaust outlet (14) and exhaust outlet (14) is ensured public security with exhaust emission pipeline (15) and liquid caustic soda respectively absorption tower (8) is connected, the lower entrances of described liquid caustic soda security personnel absorption tower (8) and exhaust emission pipeline (15) are respectively equipped with chain stop valve (9), described chain stop valve (9) is connected with the outlet sulfur dioxide concentration detector (10) being arranged on exhaust outlet (14) place, the bottom of described liquid caustic soda security personnel absorption tower (8) is also connected with top liquid caustic soda spray equipment (16) that liquid caustic soda is ensured public security in absorption tower (8) by liquid caustic soda circulating pump (5), described liquid caustic soda security personnel absorption tower (8) is connected with alkali-prepared tank (7), the top of described liquid caustic soda security personnel absorption tower (8) is connected with exhaust emission pipeline (15), described exhaust emission pipeline (15) is connected with blower fan (6).
2. a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer according to claim 1, is characterized in that: described low-concentration sulfur dioxide flue gas during smelting import (13) place is provided with entrance sulfur dioxide concentration detector (11).
3. a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer according to claim 1, is characterized in that: after described absorption, Tailings Slurry underground tank (2) is connected with ore dressing tail storehouse by slush pump.
4. a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer according to claim 1, is characterized in that: described circulating pump (3) is two groups.
5. a kind of low-concentration sulfur dioxide flue gas during smelting desulfurizer according to claim 1, is characterized in that: described liquid caustic soda circulating pump (5) is two groups.
6. a low-concentration sulfur dioxide flue gas during smelting sulfur method, is characterized in that the method comprises the following steps:
A, by ore dressing produce Tailings Slurry be delivered to Tailings Slurry underground tank (1) after Tailings Slurry is delivered to desulfurizing tower (4) by Tailings Slurry entrance;
B, ON cycle pump (3), the top spray equipment (12) Tailings Slurry is delivered in desulfurizing tower (4) by circulating pump (3) spray and under, sulfur dioxide in flue gas absorbs with low-concentration sulfur dioxide flue gas during smelting counter current contacting from bottom to top from desulfurizing tower (4), the basic activated component in Tailings Slurry by Tailings Slurry;
C, be delivered to when the Tailings Slurry pH value after absorbing reaches 6.5-7.5 absorb after Tailings Slurry underground tank (2), and be delivered in ore dressing tail storehouse through slush pump;
D, by outlet sulfur dioxide concentration detector (10) to exhaust outlet (14) place through Tailings Slurry absorb after low-concentration sulfur dioxide flue gas during smelting in sulfur dioxide concentration detect, detect qualified after, chain stop valve (9) opens to the pipeline of exhaust emission pipeline (15), and flue gas is directly discharged from exhaust emission pipeline (15);
E, liquid caustic soda in prior alkali-prepared tank (7) enters in liquid caustic soda security personnel absorption tower (8), when detecting defective, chain stop valve (9) is cut to the pipeline of exhaust emission pipeline (15), open to the pipeline of liquid caustic soda security personnel absorption tower (8) lower entrances, flue gas enters in liquid caustic soda security personnel absorption tower (8) by the ensure public security lower entrances on absorption tower (8) of liquid caustic soda, open liquid caustic soda circulating pump (5), liquid caustic soda from liquid caustic soda spray equipment (16) spray and, contact with flue gas adverse current from bottom to top in absorption tower (8) of ensuring public security from liquid caustic soda and continue to absorb the sulfur dioxide in flue gas, flue gas after absorbing by liquid caustic soda is discharged from exhaust emission pipeline (15) through the ensure public security top on absorption tower (8) of liquid caustic soda.
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CN107261758A (en) * | 2017-06-29 | 2017-10-20 | 赤峰盛森硅业科技发展有限公司 | Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride |
CN108579386A (en) * | 2018-05-23 | 2018-09-28 | 绍兴市鼎泰节能环保科技有限公司 | A kind of efficient chemical industry waste gas cleaning system |
CN109364668A (en) * | 2018-11-27 | 2019-02-22 | 宜兴市海纳环境工程有限公司 | A kind of energy-saving and emission-reduction flue gas and desulfurizing and denitrifying device and device special-purpose coat |
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CN106345259B (en) * | 2016-10-21 | 2023-05-16 | 金川集团股份有限公司 | Treatment device and method for smelting ring collection flue gas |
CN107261758A (en) * | 2017-06-29 | 2017-10-20 | 赤峰盛森硅业科技发展有限公司 | Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride |
CN108579386A (en) * | 2018-05-23 | 2018-09-28 | 绍兴市鼎泰节能环保科技有限公司 | A kind of efficient chemical industry waste gas cleaning system |
CN109364668A (en) * | 2018-11-27 | 2019-02-22 | 宜兴市海纳环境工程有限公司 | A kind of energy-saving and emission-reduction flue gas and desulfurizing and denitrifying device and device special-purpose coat |
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Effective date of registration: 20240209 Address after: 737100 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |