CN220149390U - Crystallization granulation fluidized bed - Google Patents
Crystallization granulation fluidized bed Download PDFInfo
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- CN220149390U CN220149390U CN202320126946.7U CN202320126946U CN220149390U CN 220149390 U CN220149390 U CN 220149390U CN 202320126946 U CN202320126946 U CN 202320126946U CN 220149390 U CN220149390 U CN 220149390U
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- tank body
- partition board
- crystallization
- transmission shaft
- area
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- 238000005469 granulation Methods 0.000 title claims abstract description 27
- 230000003179 granulation Effects 0.000 title claims abstract description 27
- 238000002425 crystallisation Methods 0.000 title claims abstract description 23
- 230000008025 crystallization Effects 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000013078 crystal Substances 0.000 claims abstract description 54
- 238000005192 partition Methods 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 239000006227 byproduct Substances 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000002245 particle Substances 0.000 description 18
- 229910000019 calcium carbonate Inorganic materials 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 4
- 229910001424 calcium ion Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model relates to the technical field of water treatment, in particular to a crystallization granulation fluidized bed. Comprises a tank body and supporting legs at the bottom of the tank body; the inside of the tank body is sequentially divided into a mud collecting area, a granulating area and a clear water area from bottom to top through a partition plate; the partition board comprises a first partition board and a second partition board, and channels are uniformly distributed on the partition board; a motor is fixed at the top of the tank body, a transmission shaft of the motor extends into the tank body, a baffle plate is fixed on the transmission shaft, a baffle plate is arranged at the bottom of the transmission shaft, and the baffle plate is arranged in a mud collecting area; the top of the tank body is also provided with a seed crystal adding port and a water outlet pipe; the bottom of the tank body is provided with a water inlet, a medicine adding port and a mud discharging port. The problems that a large amount of sludge is generated in the traditional treatment process, the operation process is complicated, the occupied area of a treatment system is large, meanwhile, the occupied area of equipment is large, and byproducts such as generated sludge precipitate can not be recycled and can only be transported out are solved. High hardness removal rate, high medicament utilization rate, recoverable treated matters and good economic and ecological benefits.
Description
Technical Field
The utility model relates to the technical field of water treatment, in particular to a crystallization granulation fluidized bed.
Background
At present, most of circulating water cooling systems of thermal power plants in China are open type cooling systems, in the open type cooling systems, a part of water can be evaporated and lost in the cooling process, and when the hardness in the water exceeds a certain range, the condition of generating set scaling can be generated, so that potential safety hazards are caused. Aiming at the problems, the common treatment process method in the circulating water treatment system of the thermal power plant at present is flocculation precipitation and solid-liquid separation, the softening treatment of various water bodies by adopting sodium hydroxide/sodium carbonate in the power plant is common, but the commonly adopted treatment method is to add auxiliary agents such as flocculating agents (such as polymeric iron) and coagulant aids (such as polyacrylamide) besides sodium hydroxide/sodium carbonate, adsorb impurities through seed crystals in a tank body, and discharge the impurities out of the tank body for recycling after the grain size of the crystals reaches a certain size.
Due to the aggregation of seed crystals in the tank body, the content in the tank body is more fully mixed; meanwhile, how to fully utilize the seed crystal in the tank body, improve the adsorption efficiency of the seed crystal and achieve the purpose of waste reduction; and how to improve the efficiency of removing the sludge generated after the reaction, so that the sludge is quickly discharged from the sludge discharge port without affecting other works in the tank body, is the technical direction to be researched and improved.
Disclosure of Invention
The utility model aims at: provides a crystallization granulation fluid bed with high hardness removal rate, high medicament utilization rate, recoverable treated matters and good economic and ecological benefits.
The technical scheme of the utility model is as follows:
a crystallization granulation fluidized bed comprises a tank body and supporting legs at the bottom of the tank body; the method is characterized in that: the inside of the tank body is sequentially divided into a mud collecting area, a granulating area and a clear water area from bottom to top through a partition plate; the partition board comprises a first partition board and a second partition board, and channels are uniformly distributed on the partition board; a motor is fixed at the top of the tank body, a transmission shaft of the motor extends into the tank body, the partition plate is fixed on the transmission shaft, a baffle is arranged at the bottom of the transmission shaft, and the baffle is arranged in the mud collecting area; the top of the tank body is also provided with a seed crystal adding port and a water outlet pipe; the bottom of the tank body is provided with a water inlet, a medicine adding port and a mud discharging port.
Further, the channel on the first baffle is a narrow channel, the width is larger than the outer diameter of the thrown seed crystal, and the gap between the baffle and the inner wall of the tank body is smaller than the diameter of the seed crystal.
Further, the channel on the second baffle is a wide channel, the width is smaller than the outer diameter of the recycled material in the mud collecting area, and the gap between the baffle and the inner wall of the tank body is smaller than the diameter of the seed crystal.
Further, the transmission shaft can extend to the bottom of the tank body.
Furthermore, the baffle can be with the shutoff of collection mud district export.
Further, a filter screen is arranged at the end part of the water outlet pipe.
Furthermore, the bottom of the mud collecting area of the tank body is conical, and the mud discharging port is connected with the bottom of the mud collecting area.
The utility model has the beneficial effects that:
1. the hardness removal rate of the crystallization granulation method is high, and the quality of the effluent water is stable. Through laboratory tests and field application, calcium ions of more than 70% in water can be removed through the granulation fluidized bed treatment of chemical crystallization circulating water, the turbidity of the discharged water cannot be increased, and a certain turbidity removing effect is achieved on the water with higher turbidity;
2. the medicament is single, and byproducts can be recovered. The chemical crystallization circulating water granulation fluidized bed takes the seed crystal as the core to enable calcium carbonate to be polymerized into large sediment more easily, so that only sodium hydroxide is needed to be added, sodium carbonate and other medicaments are added to water with higher permanent hardness, flocculating agent and coagulant aid are not needed to be added, the generated sediment is calcium carbonate crystal coated with the seed crystal, the particle size of the particle is 2-3mm, the content of calcium carbonate in the particle is more than 85%, and the calcium carbonate can be directly recycled to a power plant desulfurization system, and besides, no byproducts are generated;
3. the motor drives the transmission shaft to rotate, so that the partition plate forms mechanical stirring, the contents in the tank body are mixed more fully, excessive dosing is not needed, and the medicament cost is saved; the channels on the partition board can limit that the seed crystals with larger volume can not pass through the partition board after gathering, and the seed crystals with smaller particles can roll along with the water flow passing through the partition board continuously, so that impurities can be gathered continuously, and the adsorption efficiency is improved;
4. high load, large flow and small occupied area; the crystallization, granulation and softening processes are completely completed in a chemical crystallization circulating water granulation fluidized bed, and the crystal seed particles have high density and reasonable structural design, and the ascending flow rate can reach 60m/h-100m/h by controlling the particle size of the crystal calcium carbonate, so that compared with the conventional softening treatment equipment, the device has obviously larger output and can effectively save the occupied area;
5. when the mud discharging port discharges mud, the baffle plate is used for plugging the mud collecting area through the conveying shaft, other works in the tank body are not influenced, and the working efficiency is improved;
6. the system is simple, the maintenance workload is small, the maintenance is convenient, the automation degree of the system operation is high, the manual intervention is less, and the workload of operation and maintenance personnel can be effectively saved.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the sludge discharging system according to the present utility model;
FIG. 3 is a schematic top view of a first separator;
fig. 4 is a schematic top view of the second separator.
In the figure: 1. a tank body; 2. a partition plate; 2-1, a first separator; 2-2, a second separator; 2-3, narrow channels; 2-4, wide channel; 3. a medicine adding port; 4. a support leg; 5. a clear water zone; 6. a granulation zone; 7. a mud collecting area; 8. a seed crystal adding port; 9. a motor; 10. a water outlet pipe; 11. a transmission shaft; 12. a baffle; 13. a water inlet; 14. a mud discharging port; 15. and (5) seed crystal.
The specific embodiment is as follows:
the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in figures 1-4, the crystallization granulation fluidized bed comprises a tank body 1 and supporting legs 4 at the bottom of the tank body 1; the inside of the tank body 1 is sequentially divided into a mud collecting area 7, a granulating area 6 and a clear water area 5 from bottom to top through a partition board 2; the partition board 2 comprises a first partition board 2-1 and a second partition board 2-2, and channels are uniformly distributed on the partition board 2; the channel on the first baffle plate 2-1 is a narrow channel 2-3, the width is larger than the outer diameter of the thrown seed crystal 15, and the gap between the baffle plate 2 and the inner wall of the tank body 1 is smaller than the diameter of the seed crystal 15. The channel on the second baffle plate 2-2 is a wide channel 2-4, the width is smaller than the outer diameter of the recycled material in the sludge collecting area 7, and the gap between the baffle plate 2 and the inner wall of the tank body 1 is smaller than the diameter of the seed crystal 15.
The motor 9 is fixed at the top of the tank body 1, a transmission shaft 11 of the motor 9 extends into the tank body 1, the partition plate 2 is fixed on the transmission shaft 11, a baffle 12 is arranged at the bottom of the transmission shaft 11, and the baffle 12 is arranged in the mud collecting area 7; the transmission shaft 11 can extend to the bottom of the tank body 1. The baffle 12 can be used for plugging the outlet of the mud collecting area 7.
The top of the tank body 1 is also provided with a seed crystal adding port 8 and a water outlet pipe 10; the bottom of the tank body 1 is provided with a water inlet 13, a medicine adding port 3 and a mud discharging port 14. The end part of the water outlet pipe 10 is provided with a filter screen.
The bottom of the mud collecting area 7 of the tank body 1 is conical, and a mud discharging port 14 is connected with the bottom of the mud collecting area 7.
Working principle:
the crystallization, granulation and softening treatment technology is to add seed crystal 15 and alkaline agent (sodium hydroxide and sodium carbonate) into water to make calcium ions in water produce chemical reaction to produce calcium carbonate crystals, which are attached to the surface of seed crystal 15, and along with the continuous attachment of calcium carbonate, the crystals slowly grow up, and finally large-particle sediment is formed and is deposited on the water bottom to be discharged. The principle of the crystallization, granulation and softening treatment equipment is that water enters from the lower part of the tank body 1, so that the crystal seeds 15 exist in the water in a suspended state, the crystallization, granulation and softening process is completely finished in a chemical crystallization circulating water granulation fluidized bed, the particle density of the crystal seeds 15 is large, the structural design is reasonable, the ascending flow rate can reach 60m/h-100m/h by controlling the particle size of crystal calcium carbonate, calcium ions in the water form calcium carbonate to wrap the outside of the crystal seeds 15 by adding sodium hydroxide and sodium carbonate, large crystal particles are slowly formed, and when the crystal particles are formed to be large enough, the crystal particles are precipitated at the bottom of the tank body 1 and discharged.
In a specific implementation:
firstly, seed crystal 15 is added into the tank body 1 from a seed crystal adding port 8, and a water inlet 13 and a medicine adding port 3 at the bottom of the tank body 1 are respectively distributed with water and medicine; after the process is finished, a motor 9 is started, the motor 9 drives a transmission shaft 11 to rotate, the transmission shaft 11 drives a first baffle plate 2-1, a second baffle plate 2-2 and a baffle plate 12 to rotate, liquid in a tank body 1 is mechanically stirred, in the process, seed crystals 15 fall into a granulating area 6 from a narrow channel 2-3 of the first baffle plate 2-1 due to gravity, alkaline chemical sodium hydroxide and sodium carbonate are added into the water to chemically react with calcium ions in the water to generate calcium carbonate crystals, the calcium carbonate crystals are attached to the surface of the seed crystals 15, the crystals slowly grow up along with the continuous attachment of calcium carbonate, large particles are finally formed, and the crystals fall into a mud collecting area 7 from a wide channel 2-4 of the second baffle plate 2-2 due to gravity; although the water flow flowing in from the water inlet 13 at the bottom of the tank body 1 can continuously impact the seed crystal 15, the diameter of the seed crystal 15 with larger particles becomes larger, and part of the seed crystal 15 with small particles, which can pass through the wide channel 2-4 of the second partition plate 2-2, can ascend along with the water flow and continuously enter the granulating area 6 to participate in granulation; the narrow channel 2-3 of the first partition board 2-1 intercepts the seed crystal 15 which is partially attached to the granulating zone 6, and only part of seed crystal 15 which does not participate in granulation flows into the clear water zone 5 along with water flow and then falls back to the granulating zone 6 along with water flow to participate in the granulating process.
When the large particle seed crystal 15 in the sludge collecting area 7 is accumulated more, the extending function of the transmission shaft 11 of the motor 9 is started at the moment, the baffle 12 is used for plugging the outlet of the sludge collecting area 7, the large particle seed crystal 15 falling into the sludge discharging opening 14 is removed, and the large particle seed crystal 15 is conveyed to the next recycling process; after the sludge discharge is completed, the baffle 12 is lifted by the transmission shaft 11, and the granulation step is continued.
The separated water in the clear water zone 5 flows into an external water outlet pipe 10 pipeline from the water outlet pipe 10, and a filter screen at the end part of the water outlet pipe 10 can further filter the water.
The above description is merely a preferred embodiment of the present utility model, and the above illustration is not to be construed as limiting the spirit of the present utility model in any way, and any simple modification or variation of the above embodiments according to the technical spirit of the present utility model, and equivalent embodiments that may be changed or modified to equivalent variations using the above disclosed technical spirit of the present utility model, will still fall within the scope of the technical solutions of the present utility model, without departing from the spirit and scope of the present utility model.
Claims (7)
1. A crystallization granulation fluidized bed comprises a tank body (1) and supporting legs (4) at the bottom of the tank body (1); the method is characterized in that: the inside of the tank body (1) is sequentially divided into a mud collecting area (7), a granulating area (6) and a clear water area (5) from bottom to top through a partition board (2); the partition board (2) comprises a first partition board (2-1) and a second partition board (2-2), and channels are uniformly distributed on the partition board (2); a motor (9) is fixed at the top of the tank body (1), a transmission shaft (11) of the motor (9) extends into the tank body (1), the partition plate (2) is fixed on the transmission shaft (11), a baffle plate (12) is arranged at the bottom of the transmission shaft (11), and the baffle plate (12) is arranged in the mud collecting area (7); the top of the tank body (1) is also provided with a seed crystal adding port (8) and a water outlet pipe (10); the bottom of the tank body (1) is provided with a water inlet (13), a medicine adding port (3) and a mud discharging port (14).
2. A fluid bed for crystallization and granulation according to claim 1, wherein: the channel on the first baffle (2-1) is a narrow channel (2-3), the width is larger than the outer diameter of the seed crystal (15), and the gap between the baffle (2) and the inner wall of the tank body (1) is smaller than the diameter of the seed crystal (15).
3. A fluid bed for crystallization and granulation according to claim 1, wherein: the channel on the second baffle (2-2) is a wide channel (2-4), the width is smaller than the outer diameter of the recycled material in the mud collecting area (7), and the gap between the baffle (2) and the inner wall of the tank body (1) is smaller than the diameter of the seed crystal (15).
4. A fluid bed for crystallization and granulation according to claim 1, wherein: the transmission shaft (11) can extend to the bottom of the tank body (1).
5. A fluid bed for crystallization and granulation according to claim 1, wherein: the baffle (12) can be used for plugging the outlet of the mud collecting area (7).
6. A fluid bed for crystallization and granulation according to claim 1, wherein: the end part of the water outlet pipe (10) is provided with a filter screen.
7. A fluid bed for crystallization and granulation according to claim 1, wherein: the bottom of the mud collecting area (7) of the tank body (1) is conical, and a mud discharging opening (14) is connected with the bottom of the mud collecting area (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320126946.7U CN220149390U (en) | 2023-01-16 | 2023-01-16 | Crystallization granulation fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320126946.7U CN220149390U (en) | 2023-01-16 | 2023-01-16 | Crystallization granulation fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220149390U true CN220149390U (en) | 2023-12-08 |
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ID=89014189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320126946.7U Active CN220149390U (en) | 2023-01-16 | 2023-01-16 | Crystallization granulation fluidized bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220149390U (en) |
-
2023
- 2023-01-16 CN CN202320126946.7U patent/CN220149390U/en active Active
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