CN213112664U - Device for recovering aluminum fluoride from fluorine-containing wastewater - Google Patents
Device for recovering aluminum fluoride from fluorine-containing wastewater Download PDFInfo
- Publication number
- CN213112664U CN213112664U CN202021676183.6U CN202021676183U CN213112664U CN 213112664 U CN213112664 U CN 213112664U CN 202021676183 U CN202021676183 U CN 202021676183U CN 213112664 U CN213112664 U CN 213112664U
- Authority
- CN
- China
- Prior art keywords
- fluidized bed
- bed reactor
- dust collector
- pipelines
- cyclone dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of aluminium fluoride retrieves, specificly relate to a retrieve device of aluminium fluoride from fluoride waste water. Comprises a horizontal centrifuge, an atmospheric condensing tower, a fluidized bed reactor and an aluminum hydroxide big tank; the large aluminum hydroxide tank is sequentially connected with the air flow crushing device and the fluidized bed reactor through pipelines, the upper part of the fluidized bed reactor is sequentially connected with the primary cyclone dust collector, the secondary cyclone dust collector and the tertiary cyclone dust collector through pipelines, the tertiary cyclone dust collector is connected with the atmosphere condensing tower through pipelines, and the atmosphere condensing tower is sequentially connected with the condensate liquid receiving tank, the horizontal centrifuge, the drum dryer and the swing type vibrating screen through pipelines. Retrieve device of aluminium fluoride from fluoride waste water, whirlwind material quality is effectively promoted, and the utilization ratio improves, draws the material to recycle back and mixes, helps promoting output, reduces and consumes.
Description
Technical Field
The utility model belongs to the technical field of aluminium fluoride retrieves, specificly relate to a retrieve device of aluminium fluoride from fluoride waste water.
Background
The production of aluminum fluoride by a dry method mainly comprises two parts of hydrogen fluoride preparation and aluminum fluoride synthesis, concentrated sulfuric acid and fluorite react in an external heating type rotary furnace to generate hydrogen fluoride gas, the hydrogen fluoride gas is purified by a pre-purification tower and then enters a fluidized bed reactor to directly react with aluminum hydroxide entering the top of a fluidized bed to obtain an aluminum fluoride finished product.
And the tail gas of the fluidized bed enters a tail gas condensation system after being subjected to dust collection by a two-stage cyclone dust collector. The tail gas of the first-stage cyclone dust collector and the tail gas of the second-stage cyclone dust collector enter from the top of the atmospheric condensation tower and are fully contacted with the atmospheric condensation circulating liquid flowing in the same direction, so that the purposes of purification, condensation and absorption are achieved. And the condensate flows out from the bottom of the tower, enters a condensate liquid receiving tank and overflows to a collecting tank of an atmospheric condensate circulating water station.
After the atmospheric condensation circulating pool is precipitated by the first collecting pool, the second collecting pool and the third collecting pool, the fluorine content of the fluorine-containing wastewater is reduced to be less than or equal to 3000mg/L to be less than or equal to 10mg/L by a chemical precipitation method, the fluorine content reaches the discharge standard, and the precipitated sludge is collected, loaded and transported outside.
But firstly, because the raw material aluminum hydroxide is limited by supply of different manufacturers, the particle size and the specific gravity are relatively unstable, the cyclone material is unstable in production, the cyclone dust collection effect is poor, and the atmosphere condensed fluorine ions are increased.
Secondly, the cyclone material is discharged into a collecting tank of a sewage station along with atmospheric condensate due to the fact that the granularity of the aluminum hydroxide is too fine and the dust collecting effect of the cyclone dust collector is poor, and sludge formed after sedimentation in the collecting tank is limited by process equipment and cannot be recycled, so that waste is serious.
Therefore, a new device for recovering aluminum fluoride from fluorine-containing wastewater is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: provides a device for recovering aluminum fluoride from fluorine-containing wastewater. The device makes raw materials utilization efficiency improve greatly, and the output is reliable and stable than, and can not cause the gaseous waste of HF, helps promoting output.
The device for recovering aluminum fluoride from fluorine-containing wastewater comprises a horizontal centrifuge, an atmospheric condensation tower, a fluidized bed reactor and a large aluminum hydroxide tank; the large aluminum hydroxide tank is sequentially connected with the air flow crushing device and the fluidized bed reactor through pipelines, the upper part of the fluidized bed reactor is sequentially connected with the primary cyclone dust collector, the secondary cyclone dust collector and the tertiary cyclone dust collector through pipelines, the tertiary cyclone dust collector is connected with the atmosphere condensing tower through pipelines, and the atmosphere condensing tower is sequentially connected with the condensate liquid receiving tank, the horizontal centrifuge, the drum dryer and the swing type vibrating screen through pipelines.
Wherein:
the bottom of the fluidized bed reactor is respectively connected with the combustion chamber and the hydrogen fluoride gas inlet pipe through pipelines, and the middle lower part of the fluidized bed reactor is connected with a finished product cooler through a pipeline.
The lower part of the first-stage cyclone dust collector is connected with a first-stage dust collecting hopper through a pipeline, and the first-stage dust collecting hopper is connected with the fluidized bed reactor through a pipeline.
The lower part of the secondary cyclone dust collector is connected with a secondary dust collecting hopper through a pipeline, and the secondary dust collecting hopper is connected with the fluidized bed reactor through a pipeline.
The lower part of the third cyclone dust collector is connected with a third dust collecting hopper through a pipeline, the pipeline at the lower part of the third dust collecting hopper is combined with a pipeline coming out from the side part of the fluidized bed reactor and then connected with a finished product cooler, the bottom part of the finished product cooler is divided into two paths, one path is connected with a finished product warehouse, and the other path is connected with a starting bin.
The upper part of the atmospheric condensation tower is connected with an atmospheric condensation circulating liquid feeding pipe.
The outlet at the side part of the horizontal centrifuge is sequentially connected with the buffer tank, the sedimentation tank and the filter through pipelines.
Wherein:
the working principle of the roller dryer is as follows: the drum of the drum dryer is a cylinder which is slightly inclined and can rotate, wet materials enter from the upper part of one end, and dry materials are collected from the lower part of the other end. The hot air enters from the feeding end or the discharging end and is discharged from the upper part of the other end. The forward shoveling plate is arranged in the cylinder, so that the materials are continuously shoveled and sprinkled down in the rotation process of the cylinder body, and the materials are fully contacted with hot air flow, thereby improving the drying efficiency and moving the materials forward. The dried material is scraped by a scraper and is conveyed to a vibrating screen machine through a screw.
The oscillating type vibrating screen is a low-frequency rotary vibrating screen imitating manual oscillation, and the principle is as follows: the instantaneous motion is the synthesis of the displacement along the radial direction and the circular motion (spiral motion) taking the displacement as the axis, the vibration exciter capable of adjusting the eccentricity generates nonlinear three-dimensional motion, the material also generates the same motion similar to manual operation, thereby achieving the purpose of screening, and the screening accessory is matched to obtain more ideal screening effect.
The working process of the device for recovering aluminum fluoride from fluorine-containing wastewater is as follows:
(1) putting aluminum hydroxide into a large aluminum hydroxide tank, then crushing the aluminum hydroxide by entering an airflow crushing device through a pipeline, enabling the crushed aluminum hydroxide to enter a fluidized bed reactor through the pipeline, directly acting with hydrogen fluoride gas conveyed from a hydrogen fluoride gas inlet pipe to prepare dry-process aluminum fluoride, discharging the dry-process aluminum fluoride from the bottom of the fluidized bed reactor, enabling the dry-process aluminum fluoride to enter a finished product cooler for cooling, enabling a part of the dry-process aluminum fluoride to enter a finished product warehouse for temporary storage, and enabling a part of the dry-process aluminum fluoride to enter a.
(2) Tail gas from the upper part of the fluidized bed reactor enters a first-stage cyclone dust collector, a second-stage cyclone dust collector and a third-stage cyclone dust collector for solid-gas separation, the obtained solids fall into a corresponding first-stage dust collecting hopper, a corresponding second-stage dust collecting hopper and a corresponding third-stage dust collecting hopper respectively, part of the solids in the first-stage dust collecting hopper and the second-stage dust collecting hopper return to the fluidized bed reactor through pipelines for reuse, and part of the solids is discharged; and (5) feeding the solid in the third-level dust collection hopper into a finished product cooling machine.
(3) And the gas from the three-stage cyclone dust collector enters an atmosphere condensing tower, interacts with the atmosphere condensation circulating liquid conveyed by the atmosphere condensation circulating liquid feeding pipe to form fluorine-containing wastewater, and achieves the purposes of purification, condensation and absorption in the atmosphere condensing tower. The obtained fluorine-containing wastewater enters a condensate liquid receiving tank, then enters a horizontal centrifuge for solid-liquid separation, the liquid after the solid-liquid separation enters a buffer tank through a wastewater lifting pump to adjust the pH value to about 8, and then enters a sedimentation tank through adding CaCl2The chemical precipitation treatment effect is improved, aluminum sulfate and coagulant aid are added simultaneously, further precipitation is carried out through flocculation and coagulation aid, and finally, the obtained product enters a filter for filtration and purification, so that fluorine in the wastewater is finally removed.
(4) And after the solid obtained by the separation of the horizontal centrifuge enters a drum dryer to be dried and remove moisture, the solid enters a swing type vibrating screen to be finely divided and screened, and then is discharged by a discharge spiral, and is used after being analyzed and back-mixed.
Compared with the prior art, the utility model, following beneficial effect has:
(1) retrieve device of aluminium fluoride from fluoride waste water, make raw materials utilization efficiency improve greatly through setting up fluid energy milling device and cyclone, the output is more reliable and stable, and can not cause the gaseous waste of HF, helps promoting output.
(2) Retrieve device of aluminium fluoride from fluoride waste water, whirlwind material quality is effectively promoted, and the utilization ratio improves, draws the material to recycle back and mixes, helps promoting output, reduces and consumes.
(3) The device for recovering aluminum fluoride from fluorine-containing wastewater of the utility model carries out solid-liquid separation through the horizontal centrifuge, and whirlwind materials obtained after the drum dryer and the swing type vibrating screen are dried and finely divided are mixed and utilized again, thereby improving the productivity and reducing the consumption; by arranging the buffer tank, the sedimentation tank, the filter and the like, the production cost of tail gas treatment is reduced, the subsequent treatment difficulty of the fluorine-containing wastewater is reduced, and the treatment cost achieves the effects of energy conservation and emission reduction.
(4) Retrieve device of aluminium fluoride in follow fluoride waste water, per ton aluminium fluoride cost can reduce about 300 yuan to productivity 3 ten thousand tons/year, can practice thrift cost 600 ten thousand yuan per year. The produced dry-process aluminum fluoride product can completely reach the national standard AF-1 grade in GB/T4292-2007, and can meet the normal use of electrolytic aluminum production.
Drawings
FIG. 1 is a schematic view showing the structure of an apparatus for recovering aluminum fluoride from wastewater containing fluorine.
In the figure: 1. starting a stock bin; 2. a large aluminum hydroxide tank; 3. an air jet mill; 4. a combustion chamber; 5. a fluidized bed reactor; 6. a primary cyclone dust collector; 7. a secondary cyclone dust collector; 8. a third-stage cyclone dust collector; 9. a first-stage dust collecting hopper; 10. a secondary dust collecting hopper; 11. a third-level dust collection hopper; 12. a finished product cooler; 13. an atmospheric condensation tower; 14. an atmosphere condensation circulating liquid feeding pipe; 15. a condensate liquid receiving tank; 16. a horizontal centrifuge; 17. a drum dryer; 18. a rocking shaker; 19. a buffer pool; 20. a sedimentation tank; 21. a filter; 22. a hydrogen fluoride gas inlet pipe.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
The device for recovering aluminum fluoride from fluorine-containing wastewater described in embodiment 1 comprises a horizontal centrifuge 16, an atmospheric condensation tower 13, a fluidized bed reactor 5 and an aluminum hydroxide large tank 2; the aluminum hydroxide large tank 2 is sequentially connected with the air flow crushing device 3 and the fluidized bed reactor 5 through pipelines, the upper part of the fluidized bed reactor 5 is sequentially connected with the primary cyclone dust collector 6, the secondary cyclone dust collector 7 and the tertiary cyclone dust collector 8 through pipelines, the tertiary cyclone dust collector 8 is connected with the atmosphere condensing tower 13 through pipelines, and the atmosphere condensing tower 13 is sequentially connected with the condensate liquid receiving tank 15, the horizontal centrifugal machine 16, the drum dryer 17 and the swing type vibrating screen 18 through pipelines.
Wherein:
the bottom of the fluidized bed reactor 5 is respectively connected with the combustion chamber 4 and the hydrogen fluoride gas inlet pipe 22 through pipelines, and the middle lower part of the fluidized bed reactor 5 is connected with the finished product cooler 12 through a pipeline.
The lower part of the primary cyclone dust collector 6 is connected with a primary dust collecting hopper 9 through a pipeline, and the primary dust collecting hopper 9 is connected with the fluidized bed reactor 5 through a pipeline.
The lower part of the secondary cyclone dust collector 7 is connected with a secondary dust collecting hopper 10 through a pipeline, and the secondary dust collecting hopper 10 is connected with the fluidized bed reactor 5 through a pipeline.
The lower part of the third cyclone dust collector 8 is connected with a third dust collecting hopper 11 through a pipeline, the pipeline at the lower part of the third dust collecting hopper 11 is combined with a pipeline coming out from the side part of the fluidized bed reactor 5 and then connected with a finished product cooler 12, the bottom of the finished product cooler 12 is divided into two paths, one path is connected with a finished product warehouse, and the other path is connected with the starting bin 1.
The upper part of the atmospheric condensation tower 13 is connected with an atmospheric condensation circulating liquid feeding pipe 14.
The outlet at the side part of the horizontal centrifuge 16 is connected with a buffer tank 19, a sedimentation tank 20 and a filter 21 in sequence through pipelines.
Wherein:
the working principle of the roller dryer is as follows: the drum of the drum dryer is a cylinder which is slightly inclined and can rotate, wet materials enter from the upper part of one end, and dry materials are collected from the lower part of the other end. The hot air enters from the feeding end or the discharging end and is discharged from the upper part of the other end. The forward shoveling plate is arranged in the cylinder, so that the materials are continuously shoveled and sprinkled down in the rotation process of the cylinder body, and the materials are fully contacted with hot air flow, thereby improving the drying efficiency and moving the materials forward. The dried material is scraped by a scraper and is conveyed to a vibrating screen machine through a screw.
The oscillating type vibrating screen is a low-frequency rotary vibrating screen imitating manual oscillation, and the principle is as follows: the instantaneous motion is the synthesis of the displacement along the radial direction and the circular motion (spiral motion) taking the displacement as the axis, the vibration exciter capable of adjusting the eccentricity generates nonlinear three-dimensional motion, the material also generates the same motion similar to manual operation, thereby achieving the purpose of screening, and the screening accessory is matched to obtain more ideal screening effect.
The working process of the device for recovering aluminum fluoride from fluorine-containing wastewater in the embodiment 1 is as follows:
(1) put into aluminium hydroxide big jar 2, then get into jet milling device 3 through the pipeline and smash, the aluminium hydroxide that finishes smashing passes through the pipeline and enters into fluidized bed reactor 5 in, with the hydrogen fluoride gas direct action preparation dry process aluminium fluoride who delivers from hydrogen fluoride gas intake pipe 22, dry process aluminium fluoride discharges by fluidized bed reactor 5 bottom and gets into finished product cooler 12 cooling back partly get into the finished product storehouse and keep in, partly gets into and starts feed bin 1.
(2) Tail gas from the upper part of the fluidized bed reactor 5 enters a first-stage cyclone dust collector 6, a second-stage cyclone dust collector 7 and a third-stage cyclone dust collector 8 for solid-gas separation, the obtained solids fall into a corresponding first-stage dust collecting hopper 9, a corresponding second-stage dust collecting hopper 10 and a corresponding third-stage dust collecting hopper 11 respectively, part of the solids in the first-stage dust collecting hopper 9 and the second-stage dust collecting hopper 10 return to the fluidized bed reactor 5 through pipelines for reuse, and part of the solids are discharged; the solid in the third dust collecting hopper 11 enters a finished product cooling machine 12.
(3) And the gas from the three-stage cyclone dust collector enters an atmosphere condensing tower 13, interacts with the atmosphere condensing circulating liquid conveyed by an atmosphere condensing circulating liquid feeding pipe 14 to form fluorine-containing wastewater, and achieves the purposes of purification, condensation and absorption in the atmosphere condensing tower 13. The obtained fluorine-containing wastewater enters a condensate liquid receiving tank 15, then enters a horizontal centrifuge 16 for solid-liquid separation, the liquid after the solid-liquid separation enters a buffer tank 19 through a wastewater lift pump to adjust the pH value to about 8, and then enters a sedimentation tank 20 through adding CaCl2The chemical precipitation treatment effect is improved, aluminum sulfate and coagulant aid are added at the same time, further precipitation is carried out through flocculation and coagulation aid, and finally the obtained product enters a filter 21 for filtration and purification, so that fluorine in the wastewater is finally removed.
(4) The solid obtained by the separation of the horizontal centrifuge 16 enters a drum dryer 17 to be dried and remove moisture, then enters a swing type vibrating screen 18 to be finely divided and screened, and then is discharged by a discharge screw, and is used after being analyzed and mixed.
Claims (7)
1. The utility model provides a retrieve device of aluminium fluoride from fluoride waste water which characterized in that: comprises a horizontal centrifuge (16), an atmospheric condensing tower (13), a fluidized bed reactor (5) and an aluminum hydroxide large tank (2); the aluminum hydroxide large tank (2) is sequentially connected with the air flow crushing device (3) and the fluidized bed reactor (5) through pipelines, the upper part of the fluidized bed reactor (5) is sequentially connected with the primary cyclone dust collector (6), the secondary cyclone dust collector (7) and the tertiary cyclone dust collector (8) through pipelines, the tertiary cyclone dust collector (8) is connected with the atmosphere condensing tower (13) through pipelines, and the atmosphere condensing tower (13) is sequentially connected with the condensate liquid receiving tank (15) through pipelines, the horizontal centrifugal machine (16), the roller dryer (17) and the swing type vibrating screen (18).
2. The apparatus for recovering aluminum fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the bottom of the fluidized bed reactor (5) is respectively connected with the combustion chamber (4) and the hydrogen fluoride gas inlet pipe (22) through pipelines, and the middle lower part of the fluidized bed reactor (5) is connected with the finished product cooler (12) through a pipeline.
3. The apparatus for recovering aluminum fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the lower part of the primary cyclone dust collector (6) is connected with a primary dust collecting hopper (9) through a pipeline, and the primary dust collecting hopper (9) is connected with the fluidized bed reactor (5) through a pipeline.
4. The apparatus for recovering aluminum fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the lower part of the secondary cyclone dust collector (7) is connected with a secondary dust collecting hopper (10) through a pipeline, and the secondary dust collecting hopper (10) is connected with the fluidized bed reactor (5) through a pipeline.
5. The apparatus for recovering aluminum fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the lower part of the three-stage cyclone dust collector (8) is connected with a three-stage dust collecting hopper (11) through a pipeline, the pipeline at the lower part of the three-stage dust collecting hopper (11) is combined with a pipeline coming out from the side part of the fluidized bed reactor (5) and then is connected with a finished product cooler (12), the bottom of the finished product cooler (12) is divided into two paths, one path is connected with a finished product warehouse, and the other path is connected with the starting bin (1).
6. The apparatus for recovering aluminum fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the upper part of the atmospheric condensation tower (13) is connected with an atmospheric condensation circulating liquid feeding pipe (14).
7. The apparatus for recovering aluminum fluoride from fluorine-containing wastewater according to claim 1, characterized in that: the outlet at the side part of the horizontal centrifuge (16) is connected with a buffer tank (19), a sedimentation tank (20) and a filter (21) in sequence through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676183.6U CN213112664U (en) | 2020-08-12 | 2020-08-12 | Device for recovering aluminum fluoride from fluorine-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676183.6U CN213112664U (en) | 2020-08-12 | 2020-08-12 | Device for recovering aluminum fluoride from fluorine-containing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213112664U true CN213112664U (en) | 2021-05-04 |
Family
ID=75685421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021676183.6U Active CN213112664U (en) | 2020-08-12 | 2020-08-12 | Device for recovering aluminum fluoride from fluorine-containing wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213112664U (en) |
-
2020
- 2020-08-12 CN CN202021676183.6U patent/CN213112664U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3099448C (en) | Underground coal separation process | |
| CN107008565A (en) | A kind of thermal coal deep screening and dense medium separation technique | |
| WO2011060620A1 (en) | Integrated drying and dry-separating apparatus for upgrading raw coal and method of using same | |
| CN106477611A (en) | A kind of method preparing precipitated calcium carbonate using carbide slag and flue solid/liquid/gas reactions | |
| CN205868415U (en) | Vertical circulation cement raw material ball mill | |
| CN113184881B (en) | Industrial sodium chloride strong brine refining production system | |
| CN103045777A (en) | Dry processing technique for iron-containing steel slag | |
| CN108947483B (en) | Method for preparing wall brick from sludge composite mineralized garbage | |
| CN106186748B (en) | A kind of recycling system and recoverying and utilizing method of industrial waste carbide slag | |
| CN213112664U (en) | Device for recovering aluminum fluoride from fluorine-containing wastewater | |
| CN204162662U (en) | Modified version wet method apparatus for producing ethyne | |
| CN111994937A (en) | Method for recovering calcium fluoride from fluorine-containing sludge | |
| CN104741214A (en) | System and method for preparing pulverized coal fuel of pulverized-coal boiler by using coal washing tailings | |
| CN106702804B (en) | A kind of method that lignin is extracted in black liquor | |
| CN213141451U (en) | High-efficient dewatering system of coal gasification fine slag black water of many energy field step distributions | |
| CN210131807U (en) | Powder mineralized substance sorting unit | |
| CN111924866B (en) | Method for recovering aluminum fluoride from fluorine-containing wastewater | |
| CN211799379U (en) | Coal vertical mill dust settling system for drying pulverized coal by using waste gas of kiln head of cement kiln | |
| CN111017963A (en) | Recovery device and method for sodium sulfate in white carbon black production process | |
| CN206747245U (en) | A kind of Texaco stove coal gasification waste dregs mud comprehensive utilization device | |
| CN110204168A (en) | Leather-making mud recycling processing method and device | |
| CN216880970U (en) | Gasification slag extraction and recycling system | |
| CN209829208U (en) | Production system for processing ultrafine fly ash by taking solid waste ash as raw material | |
| CN209715342U (en) | A kind of aluminum capacitor separation production line | |
| CN215102961U (en) | Humic acid grinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |