CN114471085B - Wet deacidification process and system for hazardous waste incineration flue gas - Google Patents
Wet deacidification process and system for hazardous waste incineration flue gas Download PDFInfo
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- CN114471085B CN114471085B CN202111608453.9A CN202111608453A CN114471085B CN 114471085 B CN114471085 B CN 114471085B CN 202111608453 A CN202111608453 A CN 202111608453A CN 114471085 B CN114471085 B CN 114471085B
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- deacidification
- flue gas
- circulating
- washing tower
- stage washing
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000003546 flue gas Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004056 waste incineration Methods 0.000 title claims abstract description 19
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 90
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 239000003513 alkali Substances 0.000 claims abstract description 20
- 239000000654 additive Substances 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 6
- 230000008020 evaporation Effects 0.000 claims abstract description 5
- 239000013078 crystal Substances 0.000 claims abstract description 3
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 150000003839 salts Chemical class 0.000 claims abstract description 3
- 239000007921 spray Substances 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 208000005156 Dehydration Diseases 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 3
- 238000000889 atomisation Methods 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000005201 scrubbing Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000003518 caustics Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 fluoride ions Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B01D53/14—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 by absorption
- B01D53/1406—Multiple stage absorption
-
- 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
- B01D53/14—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 by absorption
- B01D53/1456—Removing acid components
-
- 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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a wet deacidification process for hazardous waste incineration flue gas, which is characterized by comprising the following steps of: the method comprises the following steps: (1) washing and deacidifying the high-temperature flue gas for the first time; (2) Carrying out secondary washing deacidification on the flue gas subjected to primary washing deacidification; (3) Discharging the flue gas subjected to secondary washing deacidification into the atmosphere; wherein, liquid alkali and additive are added into the circulating liquid generated by primary washing and deacidification, the circulating liquid generated by secondary washing and deacidification is aerated, the circulating liquid generated by secondary washing and deacidification is sent into the circulating liquid of primary washing and deacidification for evaporation and concentration, and the crystals after evaporation and concentration are dehydrated and separated to obtain the mixed salt. The beneficial effects of the invention are as follows: the generation of deacidification wastewater is avoided or reduced, and the secondary pollution of the deacidification wastewater to the environment is avoided; energy is effectively utilized, and energy conservation and emission reduction are realized; and F ‑, heavy metals and other pollutants in the deacidified wastewater are solidified, so that the diffusion of the pollutants is prevented.
Description
Field of the art
The invention belongs to the technical field of flue gas treatment, and particularly relates to a wet deacidification process and system for hazardous waste incineration flue gas.
(II) background art
The existing hazardous waste incineration flue gas wet deacidification system is generally provided with two stages of absorption towers, wherein the first stage of absorption tower is of an empty tower spray structure, and aims to cool high-temperature flue gas and perform preliminary deacidification; the second-stage absorption tower is a sieve plate tower or a packed tower structure and is used for deep deacidification; the two-stage absorption towers are used for removing pollutants such as HCl, SO 2, HF, heavy metals and the like in the flue gas in a mode of washing the flue gas by using circulating liquid, adding liquid alkali to adjust the pH value of the circulating liquid, and controlling the discharge of deacidification wastewater by using TDS.
The defects are as follows: the waste water discharged from the original two-stage absorption tower is merged and then enters a downstream waste water treatment process, a large amount of heat in high-temperature flue gas at the inlet of the first-stage absorption tower is not effectively utilized, and a large amount of deacidified waste water is required to be discharged in order to ensure the efficient deacidification effect.
(III) summary of the invention
The invention provides a wet deacidification process and a wet deacidification system for dangerous waste incineration flue gas, which are energy-saving, emission-reducing, secondary pollution-avoiding and deacidification wastewater emission-reducing.
The invention is realized by the following technical scheme:
A wet deacidification process for hazardous waste incineration flue gas is characterized by comprising the following steps of: the method comprises the following steps:
(1) Washing and deacidifying the high-temperature flue gas for the first time;
(2) Carrying out secondary washing deacidification on the flue gas subjected to primary washing deacidification;
(3) Discharging the flue gas subjected to secondary washing deacidification into the atmosphere;
Wherein, liquid alkali and additive are added into the circulating liquid generated by primary washing and deacidification, the circulating liquid generated by secondary washing and deacidification is aerated, the circulating liquid generated by secondary washing and deacidification is sent into the circulating liquid of primary washing and deacidification for evaporation and concentration, and the crystals after evaporation and concentration are dehydrated and separated to obtain the mixed salt.
Preferably, the additive is CaCl 2 solution.
Preferably, liquid caustic is added to the circulating liquid produced by the secondary washing deacidification.
Preferably, the filtrate after dehydration treatment is fed into a circulating liquid generated by primary washing and deacidification.
The utility model provides a danger useless wet deacidification system that burns flue gas, includes first level scrubbing tower and second level scrubbing tower, has laid a plurality of layers of shower once in the first level scrubbing tower, has laid a plurality of layers of secondary shower, characterized by in the second level scrubbing tower: the circulating pool of the first-stage washing tower is connected with a liquid alkali adding pipe and an additive adding pipe, the circulating pool of the first-stage washing tower is connected with a dewatering device through a discharge pump, the circulating pool of the second-stage washing tower is connected with an aeration fan, and the circulating pool of the second-stage washing tower is connected with the circulating pool of the first-stage washing tower through a circulating liquid return pipe.
And the circulating pool of the second-stage washing tower is connected with a liquid alkali adding pipe.
The dehydration device is connected with a circulating pool of the first-stage washing tower through a filtering liquid pump.
The first-stage washing tower introduces the flue gas into the first-stage washing tower through an induced draft fan.
And a plurality of demisters are respectively arranged in the first-stage washing tower and the second-stage washing tower.
The liquid alkali adding pipe and the additive adding pipe connected with the circulating pool of the first-stage washing tower are respectively connected with the first-stage circulating pump, and the liquid alkali adding pipe connected with the circulating pool of the second-stage washing tower is connected with the second-stage circulating pump.
The beneficial effects of the invention are as follows: the generation of deacidification wastewater is avoided or reduced, and the secondary pollution of the deacidification wastewater to the environment is avoided; energy is effectively utilized, and energy conservation and emission reduction are realized; and F -, heavy metals and other pollutants in the deacidified wastewater are solidified, so that the diffusion of the pollutants is prevented.
(IV) description of the drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
In the figure, a first-stage washing tower, a second-stage washing tower, a primary spray pipe 3, a secondary spray pipe 4, a liquid alkali adding pipe 5, an additive adding pipe 6, a discharge pump 7, a dewatering device 8, an aeration fan 9, a circulating liquid return pipe 10, a filtrate pump 11, a draught fan 12, a demister 13, a first-stage circulating pump 14 and a second-stage circulating pump 15 are arranged.
(Fifth) detailed description of the invention
The drawings illustrate one embodiment of the invention. The embodiment comprises a first-stage washing tower 1 and a second-stage washing tower 2, wherein a plurality of layers of primary spray pipes 3 are arranged in the first-stage washing tower 1, a plurality of layers of secondary spray pipes 4 are arranged in the second-stage washing tower 2, a circulating pool of the first-stage washing tower 1 is connected with a liquid alkali adding pipe 5 and an additive adding pipe 6, a circulating pool of the first-stage washing tower 1 is connected with a dewatering device 8 through a discharge pump 7, a circulating pool of the second-stage washing tower 2 is connected with an aeration fan 9, and a circulating pool of the second-stage washing tower 2 is connected with a circulating pool of the first-stage washing tower 1 through a circulating liquid return pipe 10. The circulating pool of the second-stage washing tower 2 is connected with a liquid alkali adding pipe 5. The dewatering device 8 is connected with a circulating pool of the first-stage washing tower 1 through a filter liquid pump 11. The first-stage scrubber 1 introduces flue gas into the first-stage scrubber 1 via an induced draft fan 12. A plurality of demisters 13 are respectively arranged in the first-stage washing tower 1 and the second-stage washing tower 2. The liquid alkali adding pipe 5 and the additive adding pipe 6 connected with the circulating pool of the first-stage washing tower 1 are respectively connected with the first-stage circulating pump 14, and the liquid alkali adding pipe 5 connected with the circulating pool of the second-stage washing tower 2 is connected with the second-stage circulating pump 15.
By adopting the wet deacidification process for the hazardous waste incineration flue gas, the flue gas generated by hazardous waste incineration is introduced into the first-stage washing tower 1 through the induced draft fan 12 after passing through the bag dust remover, is subjected to cooling and preliminary deacidification through the spraying of process water in the primary spraying pipe 3, then enters the second-stage washing tower 2, increases the volume of a circulating pool of the second-stage washing tower 2, is provided with an aeration system, oxidizes sulfite ions (SO 3 2-) in the circulating liquid into sulfate ions (SO 4 2-), and controls the concentration and the PH value of the circulating liquid SO as to ensure that the flue gas reaches the emission standard. The circulating liquid (the concentration of which is controlled by TDS) of the second-stage washing tower 2 is fed into the circulating pool of the first-stage washing tower 1 through a circulating liquid return pipe 10, atomized by a spray layer and fully contacted with high-temperature flue gas, the circulating liquid is evaporated and concentrated by utilizing the heat of the high-temperature flue gas, the pH value of the circulating liquid is regulated by adding liquid alkali, and harmful ingredients such as fluoride ions (F -) and heavy metals in the additive curing circulating liquid are added. As the moisture in the circulating liquid evaporates, the concentration gradually rises, and crystallization is slowly formed; the filtered liquid is returned to the circulating pool of the first-stage washing tower 1 by a filtering liquid pump 11 to continue concentration. The circulating liquid in the circulating pool of the first-stage washing tower 1 is used for washing and deacidifying the high-temperature flue gas for one time, and the circulating liquid in the circulating pool of the first-stage washing tower 1 is as follows: the circulating liquid in the circulating pool of the second-stage washing tower 2 is gradually concentrated by the high-temperature flue gas when entering the first-stage washing tower 1, and absorbs part of harmful components in the high-temperature flue gas, and supersaturated salt solution after alkaline liquor (pH value is adjusted) and additives are added. And (3) carrying out secondary washing deacidification on the smoke by using circulating liquid in a circulating pool of the second-stage washing tower 2, wherein the circulating liquid in the circulating pool of the second-stage washing tower 2 is tap water for absorbing harmful components in the smoke, adding alkali liquor (for adjusting the pH value), and aerating an unsaturated salt solution.
Claims (9)
1. A wet deacidification process for hazardous waste incineration flue gas is characterized by comprising the following steps of: the method comprises the following steps:
(1) Carrying out primary washing deacidification on high-temperature flue gas generated by dangerous waste incineration through a bag-type dust remover;
(2) Carrying out secondary washing deacidification on the flue gas subjected to primary washing deacidification;
(3) Discharging the flue gas subjected to secondary washing deacidification into the atmosphere;
Adding liquid alkali and additives into circulating liquid generated by primary washing and deacidification, aerating the circulating liquid generated by secondary washing and deacidification, oxidizing sulfite ions in the circulating liquid into sulfate ions, controlling the concentration and the pH value of the circulating liquid to ensure that smoke gas is discharged up to standard, conveying the circulating liquid of a second-stage washing tower (2) into a circulating pool of a first-stage washing tower (1) through a circulating liquid return pipe (10), fully contacting with high-temperature smoke gas after atomization through a spray layer, evaporating and concentrating the circulating liquid by utilizing the heat of the high-temperature smoke gas, and conveying the crystals subjected to evaporation and concentration into a dewatering device (8) through a discharge pump (7) to dewater and separate out mixed salt;
the system used comprises a first-stage washing tower (1) and a second-stage washing tower (2), wherein a plurality of layers of primary spray pipes (3) are arranged in the first-stage washing tower (1), a plurality of layers of secondary spray pipes (4) are arranged in the second-stage washing tower (2), a circulating pool of the first-stage washing tower (1) is connected with a liquid alkali adding pipe (5) and an additive adding pipe (6), a circulating pool of the first-stage washing tower (1) is connected with a dewatering device (8) through a discharge pump (7), a circulating pool of the second-stage washing tower (2) is connected with an aeration fan (9), and a circulating pool of the second-stage washing tower (2) is connected with a circulating pool of the first-stage washing tower (1) through a circulating liquid return pipe (10).
2. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: the additive is CaCl 2 solution.
3. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: and adding liquid alkali into the circulating liquid generated by the secondary washing deacidification.
4. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: and (3) sending the filtrate after dehydration treatment into circulating liquid generated by primary washing deacidification.
5. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: the circulating pool of the second-stage washing tower (2) is connected with a liquid alkali adding pipe (5).
6. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: the dewatering device (8) is connected with a circulating pool of the first-stage washing tower (1) through a filter liquid pump (11).
7. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: the first-stage washing tower (1) introduces the flue gas into the first-stage washing tower (1) through an induced draft fan (12).
8. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: a plurality of demisters (13) are respectively arranged in the first-stage washing tower (1) and the second-stage washing tower (2).
9. The wet deacidification process of hazardous waste incineration flue gas according to claim 1, which is characterized in that: the liquid alkali adding pipe (5) and the additive adding pipe (6) which are connected with the circulating pool of the first-stage washing tower (1) are respectively connected with the first-stage circulating pump (14), and the liquid alkali adding pipe (5) which is connected with the circulating pool of the second-stage washing tower (2) is connected with the second-stage circulating pump (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111608453.9A CN114471085B (en) | 2021-12-27 | 2021-12-27 | Wet deacidification process and system for hazardous waste incineration flue gas |
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| CN202111608453.9A CN114471085B (en) | 2021-12-27 | 2021-12-27 | Wet deacidification process and system for hazardous waste incineration flue gas |
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| CN114471085B true CN114471085B (en) | 2024-06-14 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102949923A (en) * | 2011-08-30 | 2013-03-06 | 威海鑫山集团有限公司 | Method and device for removing sulfur dioxide in industrially-sintered flue gas and recovering gypsum |
| CN108434960A (en) * | 2018-03-23 | 2018-08-24 | 东南大学 | A kind of devices and methods therefor promoting double tower Two-way Cycle wet desulfurization system removing fine particle and sulfur trioxide acid mist |
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| JP3132641B2 (en) * | 1996-01-31 | 2001-02-05 | 住友金属工業株式会社 | Gypsum production method |
| US7585476B2 (en) * | 2006-04-13 | 2009-09-08 | Babcock & Wilcox Power Generation Group Inc. | Process for controlling the moisture concentration of a combustion flue gas |
| CN103031172B (en) * | 2013-01-06 | 2013-12-25 | 浙江大学 | Layered biological-chemical combined biogas desulfurizing device |
| CN103505995A (en) * | 2013-08-24 | 2014-01-15 | 天津滨海新区景福电子科技有限公司 | Novel flue gas desulfurization equipment |
| CN107082523B (en) * | 2017-05-25 | 2023-08-08 | 国能龙源环保有限公司 | Wet desulfurization wastewater recycling treatment system and treatment method thereof |
| CN209034120U (en) * | 2018-08-22 | 2019-06-28 | 航天环境工程有限公司 | A kind of novel oxidized tank arrangement of ammonia type flue gas desulfurizing |
| CN110986633A (en) * | 2019-12-23 | 2020-04-10 | 中冶焦耐(大连)工程技术有限公司 | Vertical tube outflow latent heat evaporation type air cooler and process |
| CN214715663U (en) * | 2020-12-25 | 2021-11-16 | 湖南旭日陶瓷有限公司 | Flue gas desulfurization discharging equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949923A (en) * | 2011-08-30 | 2013-03-06 | 威海鑫山集团有限公司 | Method and device for removing sulfur dioxide in industrially-sintered flue gas and recovering gypsum |
| CN108434960A (en) * | 2018-03-23 | 2018-08-24 | 东南大学 | A kind of devices and methods therefor promoting double tower Two-way Cycle wet desulfurization system removing fine particle and sulfur trioxide acid mist |
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