CN112275782A - Fly ash washing device and method based on carbon dioxide tempering - Google Patents
Fly ash washing device and method based on carbon dioxide tempering Download PDFInfo
- Publication number
- CN112275782A CN112275782A CN202011191004.4A CN202011191004A CN112275782A CN 112275782 A CN112275782 A CN 112275782A CN 202011191004 A CN202011191004 A CN 202011191004A CN 112275782 A CN112275782 A CN 112275782A
- Authority
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- China
- Prior art keywords
- carbon dioxide
- stirring
- hollow
- tank body
- fly ash
- Prior art date
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 164
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 82
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 82
- 238000005406 washing Methods 0.000 title claims abstract description 25
- 238000005496 tempering Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010881 fly ash Substances 0.000 title claims description 44
- 238000003756 stirring Methods 0.000 claims abstract description 136
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001143 conditioned effect Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004090 dissolution Methods 0.000 abstract description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 abstract description 2
- 125000001309 chloro group Chemical class Cl* 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 4
- 238000006298 dechlorination reaction Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 239000002956 ash Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 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 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 150000003841 chloride salts Chemical class 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses a flying ash washing device and method based on carbon dioxide tempering, the device comprises a stirring tank body and a stirring device arranged in the stirring tank body, and the stirring device comprises: the stirring device comprises a hollow stirring rod and hollow stirring blades, wherein the hollow stirring rod is a hollow shaft body, the bottom end of the hollow stirring rod is communicated with the hollow stirring blades, the number of the hollow stirring blades is multiple, the hollow stirring blades surround the bottom end of the hollow stirring rod and are uniformly arranged along the circumferential direction of the hollow stirring rod, air holes, a drain pipe and an injection pipe are formed in blades of the hollow stirring blades, and a carbon dioxide circulation pipeline is further arranged outside the stirring tank body. According to the flying ash washing device and method based on carbon dioxide tempering, the pH value of water is reduced by using carbon dioxide, the dissolution of chlorine salt with low water solubility is promoted, the dissolution of heavy metal and calcium is reduced, and the effects of saving energy consumption and strengthening component separation are achieved.
Description
Technical Field
The invention relates to the field of solid waste treatment, in particular to a device and a method for washing fly ash based on carbon dioxide tempering.
Background
The incineration technology can realize quick volume reduction and energy utilization of garbage, is widely applied at present, but fly ash generated in the garbage incineration process contains heavy metal, dioxin and the like, belongs to dangerous waste and poses serious threat to the environment. The direct safe landfill of the incineration fly ash is high in cost and difficult to bear.
At present, the temporary disposal method is low-cost sanitary landfill after solidification and stabilization treatment, but with the shortage of landfill sites and the doubt on the long-term stability of the solidified and stabilized fly ash, how to better dispose the fly ash becomes an urgent need at present. The fly ash is treated by the cooperation of the cement kiln, so that the incineration fly ash can be recycled, heavy metals can be solidified and dioxin can be decomposed, the fly ash consumption is high, and the application prospect is very good.
However, the incineration fly ash contains chloride salt, which easily reduces the quality of clinker and causes the problems of cement kiln crusting and the like, resulting in low mixing amount of the incineration fly ash and high content of chloride salt in the fly ash entering the kiln. Therefore, the fly ash desalting pretreatment is more friendly to the cooperative treatment of the cement kiln, the water washing is a simple fly ash dechlorination process, the fly ash dechlorination process is limited to be applied at present, and the main reason for limiting the popularization is that the energy consumption for evaporating and crystallizing the filtrate after the water washing to extract the salt is high, so that the fly ash dechlorination cost is high.
Therefore, the invention aims to provide a fly ash washing device and method based on carbon dioxide tempering, so as to ensure that the liquid-solid ratio is reduced and the water consumption is reduced in the washing process, thereby reducing the subsequent evaporation capacity of the filtrate.
Disclosure of Invention
The invention aims to provide a fly ash washing device and method based on carbon dioxide tempering, which solve the problems of high subsequent evaporation water content and high energy consumption of the conventional fly ash washing device through the tempering effect of carbon dioxide on slurry.
In order to achieve the purpose, the invention provides the following technical scheme:
a fly ash washing device and method based on carbon dioxide tempering are disclosed, the device comprises a stirring tank body and a stirring device arranged in the stirring tank body, and the stirring device comprises: hollow puddler and hollow stirring paddle, hollow puddler is the hollow axis body, its bottom with hollow stirring paddle is linked together, hollow stirring paddle's quantity is a plurality of, centers on hollow puddler's bottom along the circumference of hollow puddler evenly sets up, set up gas pocket, drain pipe and injection pipe on hollow stirring paddle's the blade, the outside of agitator tank body still is provided with carbon dioxide circulation pipeline, carbon dioxide circulation pipeline one end with the inner chamber intercommunication of agitator tank body, the other end with hollow puddler intercommunication, carbon dioxide has seted up carbon dioxide on the carbon dioxide circulation pipeline and has supplemented the mouth, still connect the carbon dioxide booster pump on the carbon dioxide circulation pipeline.
Preferably, the agitation tank body includes: the stirring tank comprises a stirring tank body and a stirring tank cover, wherein the stirring tank cover is arranged above the stirring tank body and is detachably connected with the stirring tank body through a flange.
Preferably, the stirring tank cover is provided with a fly ash inlet and a water inlet, and the bottom of the stirring tank body is provided with a discharge hole.
Preferably, a motor is further arranged above the stirring tank body, and a motor driving shaft is connected with the hollow stirring rod through a gear.
Preferably, the stirring tank cover is further provided with a heating resistor which is inserted into the stirring tank body, and the outer wall of the stirring tank body is further covered with a heat insulation layer.
Preferably, a support is fixedly connected to the lower portion of the stirring tank body.
On the other hand, the fly ash water washing method based on carbon dioxide tempering comprises the following steps: adding fly ash into the stirring tank body, adding water into the stirring tank body, introducing carbon dioxide into the hollow stirring rod through a carbon dioxide supplementing port, and bubbling out of the hollow stirring rod through the air holes after the carbon dioxide enters the hollow stirring blades;
the hollow stirring rod is rotated, the rotating direction is consistent with the arc-shaped protruding direction of the blades of the hollow stirring paddle, and liquid entering the blades of the hollow stirring paddle is discharged from a water discharge pipe in the reaction;
after the reaction, the carbon dioxide which is not absorbed by the water is pressurized by a carbon dioxide booster pump and then returns to the hollow stirring rod through the carbon dioxide circulating pipeline, and meanwhile, the carbon dioxide absorbed by the water can be supplemented by the carbon dioxide supplementing port to ensure the content of the carbon dioxide;
stirring for 10-30min, stopping stirring and blowing carbon dioxide, and discharging fly ash and water.
The invention has the beneficial effects that:
according to the flying ash washing device and method based on carbon dioxide tempering, carbon dioxide is introduced into water to reduce the pH value of slurry, so that insoluble chlorine salt in the flying ash can be dissolved out, and simultaneously, carbonate, heavy metal and calcium ions are combined to generate precipitate, so that the dissolution of the heavy metal and calcium is avoided, and the pressure of subsequent filtrate treatment is reduced;
after the carbon dioxide promotes the precipitation of heavy metal ions and calcium ions, the use amount of Na2CO3 of subsequent washing filtrate is reduced, and the medicament cost of subsequent treatment is reduced;
carbon dioxide is introduced into the hollow stirring blade, and the flying ash in water is stirred by the aid of the injection and floating of carbon dioxide bubbles, so that the stirring energy consumption is reduced;
and the carbon dioxide overflowing from the bubbling water surface is collected, supplemented and pressurized and then re-injected into the blades, so that the carbon dioxide is saved, and the carbon dioxide can be derived from cement kiln flue gas purification products and has the effect of carbon dioxide emission reduction.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram showing the detailed structure of the hollow stirring rod and the hollow stirring blade;
in the figure: 1. the device comprises a motor, 2, gears, 3, a fly ash inlet, 4, a water inlet, 5, a heat insulation layer, 6, a hollow stirring rod, 7, a hollow stirring blade, 701, an air hole, 702, a water discharge pipe, 703, an injection pipe, 8, a support, 9, an exhaust port, 10, a heating resistor, 11, a discharge port, 12 and a carbon dioxide booster pump.
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.
Unless otherwise indicated, all references to up, down, left, right, front, back, inner and outer directions herein are to be interpreted as referring to up, down, left, right, front, back, inner and outer directions in the drawings to which the invention is directed.
The invention provides a fly ash washing device based on carbon dioxide tempering, which comprises a stirring tank body and a stirring device arranged in the stirring tank body, wherein the stirring device comprises: the stirring device comprises a hollow stirring rod 6 and a hollow stirring blade 7, wherein the hollow stirring rod 6 is a hollow shaft body, the bottom end of the hollow stirring rod is communicated with the hollow stirring blade 7, the number of the hollow stirring blade 7 is multiple, the hollow stirring blade 6 is surrounded at the bottom end and is uniformly arranged along the circumferential direction of the hollow stirring rod 6, the blades of the hollow stirring blade 7 are provided with an air hole 701, a drain pipe 702 and an injection pipe 703, the outer part of the stirring tank body is also provided with a carbon dioxide circulation pipeline 9, one end of the carbon dioxide circulation pipeline 9 is communicated with the inner cavity of the stirring tank body, the other end of the carbon dioxide circulation pipeline is communicated with the hollow stirring rod 6, the carbon dioxide circulation pipeline 9 is provided with a carbon dioxide supplement port, the carbon dioxide circulation pipeline is also connected with a carbon dioxide booster pump 12, and the joint of the hollow stirring blade 7 and, the section is trapezoidal, and the protruding side of arc is the short avris of its trapezoidal section, and the sunken side of arc is the long avris of its trapezoidal section, hollow stirring paddle and horizontal plane contained angle are 5-10, the gas pocket aperture is 2-5mm, and the interval is 10-20mm, drain pipe diameter is 5-10mm, the injection pipe diameter is 4-6mm, and the interval is 40-80 mm.
Specifically, the agitator tank body includes: the stirring tank body and the stirring tank cover, the stirring tank cover sets up the top of the stirring tank body, through the flange with the connection can be dismantled to the stirring tank body, the stirring tank body is the cylinder structure, and its diameter is about 1000mm, and highly about 1200 mm.
Specifically, the stirring tank cover is provided with a fly ash inlet 3 and a water inlet 4, and the bottom of the stirring tank body is provided with a discharge hole 11.
Specifically, still be provided with motor 1 above the agitator tank body, motor 1 drive shaft through gear 2 with hollow puddler 6 connects.
Specifically, still be provided with heating resistor 10 on the agitator tank lid, insert and establish in the agitator tank is internal, still cover on the agitator tank body outer wall and be provided with heat preservation 5.
Specifically, the lower part of the stirring tank body is fixedly connected with three supports 8.
Specifically, fly ash is added into the stirring tank body from the fly ash inlet 3, water is added into the stirring tank body from the water inlet 4, the liquid-solid ratio of the fly ash is 2-6L/kg, carbon dioxide is introduced into the hollow stirring rod 6 from a carbon dioxide supplement port, the fly ash enters the hollow stirring rod 6 and is bubbled out from the air hole 701 after entering the hollow stirring blade 7, the flow of the carbon dioxide corresponding to each liter of water is 100 plus 500mL/min, the motor 1 is started to drive the hollow stirring rod 6, the rotating speed of the hollow stirring rod 6 is 3-6r/min, the rotating direction is consistent with the arc-shaped protruding direction of the blade of the hollow stirring blade 7, in the reaction, the liquid entering the blade of the hollow stirring blade 7 is discharged from the water discharge pipe 702, the water temperature in the stirring tank body is not lower than 10 ℃ through the heating resistor 10 and the heat insulation layer 5, after stirring for 10-30min, stopping the operation of the motor 1, stopping stirring and blowing of carbon dioxide, discharging fly ash and water from the discharge port 11, after reaction, pressurizing carbon dioxide which is not absorbed by water by a carbon dioxide booster pump 12, and returning the carbon dioxide to the hollow stirring rod 6 again through the carbon dioxide circulation pipeline, and simultaneously supplementing the carbon dioxide absorbed by water by the carbon dioxide supplementing port to ensure the content of the carbon dioxide, wherein the water content of the filter cake of washing fly ash after filter pressing is 10%, the water content of the filter cake after drying is 2%, and the chlorine content is lower than 5% of the chlorine content in the original fly ash. From the single-stage water washing and the liquid-solid ratio of 2L/kg, the dechlorination effect is better.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a flying dust washing unit based on carbon dioxide quenching and tempering, is in including agitator tank body and setting the inside agitating unit of agitator tank body, its characterized in that:
the stirring device includes: a hollow stirring rod and a hollow stirring blade;
the hollow stirring rod is a hollow shaft body, and the bottom end of the hollow stirring rod is communicated with the hollow stirring blade;
the number of the hollow stirring blades is multiple, the hollow stirring blades are uniformly arranged around the bottom end of the hollow stirring rod along the circumferential direction of the hollow stirring rod, and air holes, water drainage pipes and injection pipes are formed in the blades of the hollow stirring blades;
a carbon dioxide circulating pipeline is also arranged outside the stirring tank body;
one end of the carbon dioxide circulating pipeline is communicated with the inner cavity of the stirring tank body, the other end of the carbon dioxide circulating pipeline is communicated with the hollow stirring rod, a carbon dioxide supplementing port is formed in the carbon dioxide circulating pipeline, and the carbon dioxide circulating pipeline is further connected with a carbon dioxide booster pump.
2. The fly ash washing device based on carbon dioxide tempering according to claim 1, characterized in that: the agitator tank body includes: the stirring tank comprises a stirring tank body and a stirring tank cover, wherein the stirring tank cover is arranged above the stirring tank body and is detachably connected with the stirring tank body through a flange.
3. The fly ash washing device based on carbon dioxide tempering according to claim 2, characterized in that: the stirring tank cover is provided with a fly ash inlet and a water inlet, and the bottom of the stirring tank body is provided with a discharge hole.
4. The fly ash washing device based on carbon dioxide tempering according to claim 1, characterized in that: the stirring tank is characterized in that a motor is further arranged above the stirring tank body, and a motor driving shaft is connected with the hollow stirring rod through a gear.
5. The fly ash washing device based on carbon dioxide tempering according to claim 2, characterized in that: the stirring tank cover is further provided with a heating resistor which is inserted into the stirring tank body, and the outer wall of the stirring tank body is further covered with a heat insulation layer.
6. The fly ash washing device based on carbon dioxide tempering according to claim 2, characterized in that: and a support is fixedly connected below the stirring tank body.
7. A method of carbon dioxide conditioned fly ash water washing apparatus based on any of claims 1 to 6, comprising the steps of:
adding fly ash into the stirring tank body, adding water into the stirring tank body, introducing carbon dioxide into the hollow stirring rod through a carbon dioxide supplementing port, and bubbling out of the hollow stirring rod through the air holes after the carbon dioxide enters the hollow stirring blades;
the hollow stirring rod is rotated, the rotating direction is consistent with the arc-shaped protruding direction of the blades of the hollow stirring paddle, and liquid entering the blades of the hollow stirring paddle is discharged from a water discharge pipe in the reaction;
after the reaction, the carbon dioxide which is not absorbed by the water is pressurized by a carbon dioxide booster pump and then returns to the hollow stirring rod through the carbon dioxide circulating pipeline, and meanwhile, the carbon dioxide absorbed by the water can be supplemented by the carbon dioxide supplementing port to ensure the content of the carbon dioxide;
stirring for 10-30min, stopping stirring and blowing carbon dioxide, and discharging fly ash and water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191004.4A CN112275782B (en) | 2020-10-30 | 2020-10-30 | Fly ash washing device and method based on carbon dioxide tempering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011191004.4A CN112275782B (en) | 2020-10-30 | 2020-10-30 | Fly ash washing device and method based on carbon dioxide tempering |
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| CN112275782A true CN112275782A (en) | 2021-01-29 |
| CN112275782B CN112275782B (en) | 2023-12-05 |
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| CN113426237A (en) * | 2021-07-06 | 2021-09-24 | 桂林金山新材料有限公司 | Carbon dioxide treatment equipment and treatment method for calcium carbonate production |
| CN113523929A (en) * | 2021-09-16 | 2021-10-22 | 江苏上融新能源科技有限公司 | Intelligent machine tool for grinding |
| CN113735468A (en) * | 2021-09-18 | 2021-12-03 | 江苏梵坤环保科技发展股份有限公司 | Waste incineration fly ash recycling treatment system and method coupled with waste incineration |
| CN113953311A (en) * | 2021-08-31 | 2022-01-21 | 江西盖亚环保科技有限公司 | Fly ash washing process for carbon dioxide modified multistage reverse pulping |
| CN113957260A (en) * | 2021-08-31 | 2022-01-21 | 江西盖亚环保科技有限公司 | Heavy metal recovery process of fly ash |
| CN114147047A (en) * | 2021-08-31 | 2022-03-08 | 江西盖亚环保科技有限公司 | Resource recovery process for ash water washing slag |
| CN115193863A (en) * | 2022-05-30 | 2022-10-18 | 江苏省环境工程技术有限公司 | Carbon dioxide-assisted three-stage countercurrent washing fly ash dechlorination device and method |
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