CN218743910U - Tail slag treatment device for preparing hydrogen fluoride - Google Patents
Tail slag treatment device for preparing hydrogen fluoride Download PDFInfo
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- CN218743910U CN218743910U CN202223263803.5U CN202223263803U CN218743910U CN 218743910 U CN218743910 U CN 218743910U CN 202223263803 U CN202223263803 U CN 202223263803U CN 218743910 U CN218743910 U CN 218743910U
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Abstract
The utility model provides a hydrogen fluoride is prepared and is used tailings processing apparatus includes that tailings seals spray set, one-level settling basin, second grade settling basin, alkali lye spray set, tailings seals spray set and is equipped with the leakage fluid dram, the inlet of one-level settling basin passes through the pipeline intercommunication with tailings seals spray set's leakage fluid dram, the liquid outlet of one-level settling basin passes through the pipeline intercommunication with second grade settling basin's inlet, the liquid outlet of second grade settling basin passes through the pipeline intercommunication with alkali lye spray set's inlet, tailings seals spray set and still is equipped with the gas vent, alkali lye spray set is equipped with the air inlet, tailings seals spray set's gas vent and passes through the pipeline intercommunication with alkali lye spray set's air inlet, alkali lye spray set still is equipped with the liquid outlet, alkali lye spray set's liquid outlet and tailings seal spray set's inlet and pass through the pipeline intercommunication. The hydrogen fluoride is prepared and is used the tailings processing apparatus through spraying water to the tailings directly, poisonous and harmful soluble gas including hydrogen fluoride in the tailings will be absorbed more completely.
Description
Technical Field
The utility model relates to a hydrogen fluoride production facility technical field especially relates to a hydrogen fluoride is prepared and is used tailings processing apparatus.
Background
The main component of the tailings for preparing the anhydrous hydrogen fluoride is calcium sulfate, and the tailings also contain trace hydrogen fluoride gas, dust and the like and have very high temperature. If the tailings are discharged directly, air, soil and water sources are polluted. In the prior art, the hydrogen fluoride gas, dust and the like in the tailing flue gas are treated by a flue gas purification device, so that the discharged flue gas meets the emission requirement. For example, patent No. 202220549697.8, entitled: the technical proposal disclosed by the Chinese utility model patent of the comprehensive treatment system for preparing tailings, fume and dust by anhydrous hydrogen fluoride removes dust and hydrogen fluoride gas in the fume by a dust suction device and a multi-stage washing device. However, after the tailings are discharged, the hydrogen fluoride gas can be continuously released, and soluble substances in the tailings can still pollute soil and water sources.
Disclosure of Invention
In view of the above, there is a need for a tailing processing device for producing hydrogen fluoride, which can cool the tailing and take away toxic and harmful soluble substances such as hydrogen fluoride and dust in the tailing by spraying the tailing.
The utility model provides a hydrogen fluoride is prepared and is used tailings processing apparatus includes that tailings seals spray set, one-level settling basin, second grade settling basin, alkali lye spray set, tailings seals spray set and is equipped with the leakage fluid dram, the inlet of one-level settling basin passes through the pipeline intercommunication with tailings seals spray set's leakage fluid dram, the liquid outlet of one-level settling basin passes through the pipeline intercommunication with second grade settling basin's inlet, the liquid outlet of second grade settling basin passes through the pipeline intercommunication with alkali lye spray set's inlet, tailings seals spray set and still is equipped with the gas vent, alkali lye spray set is equipped with the air inlet, tailings seals spray set's gas vent and passes through the pipeline intercommunication with alkali lye spray set's air inlet, alkali lye spray set still is equipped with the liquid outlet, alkali lye spray set's liquid outlet and tailings seal spray set's inlet and pass through the pipeline intercommunication.
Preferably, spray set is sealed to tailings includes seal housing, tailings conveyer belt, first spray line, water receiving tank, negative-pressure air fan, the tailings conveyer belt crosses in seal housing, is equipped with the mesh on the tailings conveyer belt to in water leaks down, first spray line's shower nozzle is located the tailings conveyer belt directly over, in order to spray water, the water receiving tank is located the tailings conveyer belt directly under, the leakage fluid dram of water receiving tank passes through the pipeline intercommunication with the inlet of one-level sedimentation tank, seal housing's upper end is equipped with the gas vent, negative-pressure air fan communicates with seal housing's gas vent, negative-pressure air fan's gas outlet and alkali lye spray set's air inlet pass through the pipeline intercommunication, in order to discharge into alkali lye spray set with the gas that thoughtlessly has vapor.
Preferably, alkali lye spray set is including spraying a jar body, second spray piping, cistern, the top that sprays a jar body is equipped with the gas vent, and the middle-end that sprays a jar body is equipped with the air inlet, and second spray piping's shower nozzle is located the upper end that sprays jar body's air inlet, and the cistern is located second spray piping's shower nozzle under, second spray piping and the liquid outlet intercommunication of second settling basin, the liquid outlet and the inlet intercommunication of first spray piping of cistern.
Preferably, a first heat exchange mechanism is arranged between the tailing closed spraying device and the alkali liquor spraying device so as to exchange heat for gas entering the alkali liquor spraying device, the first heat exchange mechanism comprises a heat preservation tank body and a spiral heat exchange pipeline, low-temperature water is filled in the heat preservation tank body, the spiral heat exchange pipeline spirals upwards, an air inlet of the spiral heat exchange pipeline penetrates through the side wall of the heat preservation tank body and is communicated with an air outlet of a negative pressure fan, and an air outlet of the spiral heat exchange pipeline penetrates through the side wall of the heat preservation tank body and is communicated with the air inlet of the alkali liquor spraying device.
Preferably, be equipped with second heat transfer mechanism in the one-level sedimentation tank to hot water to in the one-level sedimentation tank carries out the heat transfer, second heat transfer mechanism includes serpentine coil, and serpentine coil is located the below of the liquid level of one-level sedimentation tank, is full of the heat transfer water in the serpentine coil.
Preferably, the hydrogen fluoride preparation tailings treatment device further comprises an alkali liquor tank, and the alkali liquor tank is communicated with the second spraying pipeline to supplement alkali liquor to the second spraying pipeline.
Preferably, a venturi tube is arranged on a pipeline between the secondary sedimentation tank and the second spraying pipeline, and a pipe orifice at the throat of the venturi tube is communicated with a liquid outlet of the lye tank so as to stably supplement lye.
Has the advantages that: the utility model discloses a hydrogen fluoride is prepared and is used tailings processing apparatus is through directly spraying water to the tailings, and poisonous harmful soluble gas including hydrogen fluoride in the tailings will more thorough quilt absorb. Toxic and harmful gases containing hydrogen fluoride in the water vapor generated after water spraying are further absorbed by the alkali liquor spraying device, and finally discharged gases meet the environmental protection requirement. Meanwhile, some dust is discharged along with the spray water, the sewage is firstly settled through the primary sedimentation tank and then settled through the secondary sedimentation tank, the sewage is different from sediments in the primary sedimentation tank, the sediment generated in the secondary sedimentation tank is mainly calcium fluoride, and the sewage can be used as industrial raw materials after being concentrated and filtered. Therefore, toxic and harmful substances in the tailings can be effectively absorbed, and the harm degree to the environment is obviously reduced. Meanwhile, toxic and harmful substances in the tailings are converted into usable substances for use.
Drawings
FIG. 1 is a schematic structural view of the tailing processing device for hydrogen fluoride production according to the present invention.
Fig. 2 is the schematic diagram of the internal structure of the tailing sealing spray device and the first heat exchange mechanism of the utility model.
FIG. 3 is a partial cross-sectional view of the tailing processing device for hydrogen fluoride production according to the present invention.
In the figure: the hydrogen fluoride preparation tailings treatment device comprises a tailings treatment device 10, a tailings closed spraying device 20, a sealed shell 201, a tailings conveying belt 202, a first spraying pipeline 203, a water receiving tank 204, a primary sedimentation tank 30, a secondary sedimentation tank 40, an alkali liquor spraying device 50, a spraying tank body 501, a second spraying pipeline 502, a water storage tank 503, a first heat exchange mechanism 60, a heat insulation tank body 601, a spiral heat exchange pipeline 602, a second heat exchange mechanism 70 and an alkali liquor tank 80.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1 to 3, a tailings treatment device 10 for preparing hydrogen fluoride comprises a tailings closed spraying device 20, a first-stage sedimentation tank 30, a second-stage sedimentation tank 40 and an alkali liquor spraying device 50, wherein the tailings closed spraying device 20 is provided with a liquor drainage port, a liquor inlet of the first-stage sedimentation tank 30 is communicated with the liquor drainage port of the tailings closed spraying device 20 through a pipeline, a liquor outlet of the first-stage sedimentation tank 30 is communicated with a liquor inlet of the second-stage sedimentation tank 40 through a pipeline, a liquor outlet of the second-stage sedimentation tank 40 is communicated with a liquor inlet of the alkali liquor spraying device 50 through a pipeline, the tailings closed spraying device 20 is further provided with an exhaust port, the alkali liquor spraying device 50 is provided with an air inlet, the exhaust port of the tailings closed spraying device 20 is communicated with the air inlet of the alkali liquor spraying device 50 through a pipeline, the alkali liquor spraying device 50 is further provided with a liquor outlet, and the liquor outlet of the alkali liquor spraying device 50 is communicated with the liquor inlet of the tailings closed spraying device 20 through a pipeline.
The utility model discloses a spray set 20 is sealed to tailings has two effects, and an effect sprays the tailings, and another effect prevents the loss of the gaseous after spraying. The tailings pass through the spraying function, and toxic and harmful soluble gases in the tailings are absorbed by the spraying water. Because the temperature of the tailings is very high, part of water is changed into water vapor in the spraying process, and meanwhile, some toxic and harmful gases are also remained in the air. These gases are purified by means of an alkali spray device 50. By this, the water falling after the spraying may also contain toxic and harmful components, which may be treated by alkali solution or the like after entering the primary and secondary settling ponds 30 and 40. The precipitates in the primary settling tank 30 are mainly dust, and the availability is reduced. The precipitate in the secondary sedimentation tank 40 is mainly calcium fluoride, which can be utilized after subsequent conversion.
Tailings are generated in the reaction furnace, generally discontinuous, but when the reaction furnace discharges tailings, the amount of the tailings is large, and the tailings are slowly sprayed, so that the tailings can be temporarily stored in a tank body and can be gradually discharged into the tailings sealing spraying device 20, further, for this situation, the tailings sealing spraying device 20 comprises a sealing shell 201, a tailings conveying belt 202, a first spraying pipeline 203, a water receiving tank 204 and a negative pressure fan, the tailings conveying belt 202 crosses the sealing shell 201, the tailings conveying belt 202 is provided with meshes so as to facilitate water leakage, a spray head of the first spraying pipeline 203 is positioned right above the tailings conveying belt 202 to spray water, the water receiving tank 204 is positioned right below the tailings conveying belt 202, a liquid discharge port of the water receiving tank 204 is communicated with a liquid inlet of the primary sedimentation tank 30 through a pipeline, an upper end of the sealing shell 201 is provided with an air exhaust port, the air fan is communicated with the exhaust port of the sealing shell, an air outlet of the negative pressure fan is communicated with an air inlet of the alkali liquor spraying device 50 through a pipeline 201 so as to discharge gas mixed with water vapor into the spraying device 50. The tailings conveyer 202 gradually transports the tailings out of the tank and treats the tailings, so that two ends of the sealed shell 201 need to be opened, and the pressure fan forms a negative pressure space for the sealed shell 201, so that the gas in the space cannot escape. The tailings belt 202 is preferably a corrosion resistant material. Instead of using the tailings conveyor belt 202, the tailings may be conveyed by a screw conveyor, a spiral drum. These conventional variations are all within the scope of the present invention.
Further, the alkali liquor spraying device 50 comprises a spraying tank body 501, a second spraying pipeline 502 and a water storage tank 503, wherein an exhaust port is arranged at the top of the spraying tank body 501, an air inlet is arranged at the middle end of the spraying tank body 501, a spray head of the second spraying pipeline 502 is positioned at the upper end of the air inlet of the spraying tank body 501, the water storage tank 503 is positioned under the spray head of the second spraying pipeline 502, the second spraying pipeline 502 is communicated with a liquid outlet of a second sedimentation tank, and a liquid outlet of the water storage tank 503 is communicated with a liquid inlet of the first spraying pipeline 203.
The gas discharged into the lye spraying devices 50 has a relatively high temperature and will lose a large amount of heat if directly sprayed for discharge. Therefore, further, a first heat exchange mechanism 60 is arranged between the tailing closed spraying device 20 and the alkali liquor spraying device 50 to exchange heat for gas before entering the alkali liquor spraying device 50, the first heat exchange mechanism 60 comprises a heat preservation tank 601 and a spiral heat exchange pipeline 602, low-temperature water is filled in the heat preservation tank 601, the spiral heat exchange pipeline 602 spirals upwards, an air inlet of the spiral heat exchange pipeline 602 penetrates through the side wall of the heat preservation tank 601 and is communicated with an air outlet of a negative pressure fan, and an air outlet of the spiral heat exchange pipeline 602 penetrates through the side wall of the heat preservation tank 601 and is communicated with an air inlet of the alkali liquor spraying device 50. The water in the heat-insulating tank body 601 can be used as washing water in winter, such as bathing and vegetable washing, and can also be used for heating in a small space. The spiral heat exchange pipe 602 spirals upwards, so that the stroke of the gas in the heat preservation Wen Guanti in the container can be greatly improved, and the heat exchange amount is improved.
Further, be equipped with second heat exchange mechanism 70 in the one-level sedimentation tank 30 to the hot water in the one-level sedimentation tank 30 carries out the heat transfer, second heat exchange mechanism 70 includes serpentine coil, and serpentine coil is located the below of the liquid level of one-level sedimentation tank 30, is full of the heat transfer water in the serpentine coil.
The shower water after washing also has a high temperature, and the shower water can exchange heat with the water in the second heat exchange mechanism 70, and the water in the second heat exchange mechanism 70 can be used for bathing, washing vegetables and heating. The serpentine coil can effectively increase the heat exchange area with hot water, and the heat exchange efficiency is higher.
In the whole process, due to the existence of the acid gas, the alkali liquor is consumed all the time, and further, the tailing processing device 10 for preparing hydrogen fluoride further comprises an alkali liquor tank 80, and the alkali liquor tank 80 is communicated with the second spraying pipeline 502 to supplement the alkali liquor to the second spraying pipeline 502. Through setting up lye tank 80, can effectively supply the alkali lye in the device.
Further, a venturi tube is arranged on the pipeline between the secondary sedimentation tank 40 and the second spraying pipeline 502, and a pipe orifice at the throat of the venturi tube is communicated with a liquid outlet of the lye tank 80 so as to stably supplement lye. Through setting up venturi, can last for the device provides alkali lye for the alkali lye concentration in the whole circulating water maintains relatively stable environment.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a hydrogen fluoride is prepared and is used tailings processing apparatus which characterized in that: the tailing spraying device is provided with a liquid outlet, an inlet of the first-level sedimentation tank and the liquid outlet of the tailing spraying device are communicated through a pipeline, a liquid outlet of the first-level sedimentation tank and an inlet of the second-level sedimentation tank are communicated through a pipeline, a liquid outlet of the second-level sedimentation tank and an inlet of the alkali liquor spraying device are communicated through a pipeline, a tail slag sealing spraying device is further provided with a gas outlet, the alkali liquor spraying device is provided with a gas inlet, a gas outlet of the tail slag sealing spraying device and a gas inlet of the alkali liquor spraying device are communicated through a pipeline, the alkali liquor spraying device is further provided with a liquid outlet, and a liquid outlet of the alkali liquor spraying device and an inlet of the tailing sealing spraying device are communicated through a pipeline.
2. The apparatus for treating a hydrogen fluoride-producing tailings as recited in claim 1, wherein: the tailings sealing and spraying device comprises a sealing shell, a tailings conveying belt, a first spraying pipeline, a water receiving tank and a negative pressure fan, wherein the tailings conveying belt transversely penetrates through the sealing shell, meshes are formed in the tailings conveying belt, so that water leaks, a spray head of the first spraying pipeline is located right above the tailings conveying belt to spray water, the water receiving tank is located right below the tailings conveying belt, a liquid discharge port of the water receiving tank is communicated with a liquid inlet of the first-level sedimentation tank through a pipeline, a gas exhaust port is formed in the upper end of the sealing shell, the negative pressure fan is communicated with the gas exhaust port of the sealing shell, a gas outlet of the negative pressure fan is communicated with a gas inlet of the alkali liquor spraying device through a pipeline, and gas mixed with vapor is discharged into the alkali liquor spraying device.
3. The apparatus for treating a hydrogen fluoride-producing tailings as recited in claim 1, wherein: alkali lye spray set is including spraying a jar body, second spray piping, cistern, the top that sprays a jar body is equipped with the gas vent, and the middle-end that sprays a jar body is equipped with the air inlet, and second spray piping's shower nozzle is located the upper end that sprays jar body's air inlet, and the cistern is located second spray piping's shower nozzle under, the liquid outlet intercommunication of second spray piping and second settling basin, the liquid outlet of cistern and first spray piping's inlet intercommunication.
4. The apparatus for treating a hydrogen fluoride-producing tailings as recited in claim 1, wherein: the tail slag closed spraying device is characterized in that a first heat exchange mechanism is arranged between the tail slag closed spraying device and the alkali liquor spraying device so as to exchange heat for gas entering the alkali liquor spraying device, the first heat exchange mechanism comprises a heat insulation tank body and a spiral heat exchange pipeline, low-temperature water is filled in the heat insulation tank body, the spiral heat exchange pipeline spirals upwards, an air inlet of the spiral heat exchange pipeline penetrates through the side wall of the heat insulation tank body and is communicated with an air outlet of a negative pressure fan, and an air outlet of the spiral heat exchange pipeline penetrates through the side wall of the heat insulation tank body and is communicated with the air inlet of the alkali liquor spraying device.
5. The apparatus for treating a hydrogen fluoride-producing tailings as recited in claim 1, wherein: the secondary sedimentation tank is internally provided with a second heat exchange mechanism to exchange heat for hot water in the primary sedimentation tank, the second heat exchange mechanism comprises a serpentine coil, the serpentine coil is positioned below the liquid level of the primary sedimentation tank, and the serpentine coil is filled with heat exchange water.
6. The apparatus for treating a hydrogen fluoride-producing tailings as recited in claim 1, wherein: the hydrogen fluoride preparation tailings treatment device further comprises an alkali liquor tank, and the alkali liquor tank is communicated with the second spraying pipeline to supplement alkali liquor to the second spraying pipeline.
7. The apparatus for treating a hydrogen fluoride-producing tailings of claim 6, wherein: and a venturi tube is arranged on a pipeline between the secondary sedimentation tank and the second spraying pipeline, and a pipe orifice at the throat of the venturi tube is communicated with a liquid outlet of the alkali liquor tank so as to stably supplement alkali liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223263803.5U CN218743910U (en) | 2022-12-06 | 2022-12-06 | Tail slag treatment device for preparing hydrogen fluoride |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223263803.5U CN218743910U (en) | 2022-12-06 | 2022-12-06 | Tail slag treatment device for preparing hydrogen fluoride |
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| CN218743910U true CN218743910U (en) | 2023-03-28 |
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| CN202223263803.5U Active CN218743910U (en) | 2022-12-06 | 2022-12-06 | Tail slag treatment device for preparing hydrogen fluoride |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493395A (en) * | 2023-03-30 | 2023-07-28 | 中核第四研究设计工程有限公司 | Uranium tailings microorganism treatment device |
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2022
- 2022-12-06 CN CN202223263803.5U patent/CN218743910U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493395A (en) * | 2023-03-30 | 2023-07-28 | 中核第四研究设计工程有限公司 | Uranium tailings microorganism treatment device |
| CN116493395B (en) * | 2023-03-30 | 2023-11-07 | 中核第四研究设计工程有限公司 | Uranium tailings microorganism treatment device |
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