Efficient fluorine recycling device
By designing an efficient fluorine recycling device including a mixing tank, a jacketed defluorination reactor, a water circulation cooler and a fan, the problem of fluorine in the fluorine-containing material liquid cannot be recovered is solved, and an efficient recycling and green and environmentally friendly integrated heating and stripping process is achieved.
Patent Information
- Application Number
- CN202421333556.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-12
AI Technical Summary
In the fields of wet phosphoric acid and new energy batteries, fluorine in the material liquids such as fluorine-containing phosphoric acid and sulfuric acid cannot be effectively recovered, resulting in waste of resources and affecting the quality of phosphogypsum and terminal fertilizers.
An efficient fluorine recycling device is designed, including mixing tanks, jacketed fluorine defluorination reactors, water circulation coolers and fans. The efficient fluorine recovery is achieved through technical means such as low-pressure steam heating and countercurrent contact of the circulation nozzle.
The device can efficiently recover fluorine in the fluorine-containing material liquid, with a recovery rate of more than 85%, and no other waste is generated, realizing a green and environmentally friendly integrated heating and stripping process.
Smart Images
Figure CN222606328U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of resource recovery, and in particular relates to a high-efficiency fluorine recovery and utilization device. Background Art
[0002] In the fields of wet-process phosphoric acid, new energy batteries, etc., there are a large number of fluorine-containing phosphoric acid, sulfuric acid and other liquids, in which the fluorine content ranges from 3% to 10%. This part of fluorine will eventually be taken out of the system by terminal products such as phosphogypsum and fertilizers during the wet-process phosphoric acid production process. This not only causes a large amount of fluorine resources to be wasted, but the presence of these fluorine elements will also affect the quality of phosphogypsum and terminal fertilizers, making the subsequent comprehensive utilization of phosphogypsum and the sales of fertilizers more difficult. Therefore, this device provides an efficient way to recover fluorine in fluorine-containing liquids. Summary of the invention
[0003] In view of the problem that the fluorine in the above-mentioned fluorine-containing resources cannot be recovered and affects the quality of phosphogypsum and terminal fertilizers, the utility model provides a high-efficiency fluorine recovery and utilization device, and its technical solution is: it includes a mixing tank, the top of the mixing tank is connected to a feed pipe and a fluorine overflow agent tank, the discharge port of the mixing tank is connected to a mixed liquid delivery pump, the mixed liquid delivery pump is connected to the bottom of the inner jacket of the jacketed defluorination reactor, the top of the jacketed defluorination reactor is connected to the feed port of a water circulation cooler, the discharge port of the cooler is connected to a fan, and the fan is connected to the next process; the outer jacket of the jacketed defluorination reactor is connected to a medium-pressure steam pipe.
[0004] As a preferred solution, a low-pressure steam coil is arranged in the mixing tank.
[0005] As a preferred solution, the top of the mixing tank is connected to a fan.
[0006] As a preferred solution, the bottom of the inner jacket of the jacketed defluorination reactor is connected to a defluorination liquid circulation pump, and the defluorination liquid circulation pump is connected to a circulation nozzle, which is located at the top of the inner jacket of the jacketed defluorination reactor.
[0007] As a preferred solution, the feed port of the water circulation cooler is connected to the steam condensate tank.
[0008] As a preferred embodiment, a liquid drain is arranged at the bottom of the inner jacket of the jacketed defluorination reactor, and a ball valve is arranged on the liquid drain; a condensate drain is arranged at the bottom of the outer jacket of the jacketed defluorination reactor, and a ball valve is arranged on the condensate drain.
[0009] Beneficial effects of the utility model:
[0010] The device is used to recover fluorine from fluorine-containing liquid, with a recovery rate of over 85%. The device does not produce any other waste, is green and environmentally friendly, and realizes an integrated heating and stripping process. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0012] In the figure: 1. mixing tank; 101. mixed liquid delivery pump; 102. feed pipe; 2. overflow fluorine agent tank; 3. jacketed defluorination reactor; 301. defluorination liquid circulation pump; 302; cooler; 303. circulation nozzle; 4. fan; 5. steam condensate tank; 6. low-pressure steam coil; 7. medium-pressure steam pipe; 8. liquid drain; 9. condensate drain. DETAILED DESCRIPTION
[0013] The utility model is further described in detail below based on the accompanying drawings and specific embodiments.
[0014] Example 1
[0015] like Figure 1 As shown, a high-efficiency fluorine recovery and utilization device includes a mixing tank 1, the top of the mixing tank 1 is connected to a feed pipe 102 and a fluorine overflow agent tank 2, the discharge port of the mixing tank 1 is connected to a mixed liquid delivery pump 101, the mixed liquid delivery pump 101 is connected to the bottom of the inner jacket of a jacketed defluorination reactor 3, the top of the jacketed defluorination reactor 3 is connected to the feed port of a water circulation cooler 302, the discharge port of the cooler 302 is connected to a fan 4, and the fan 4 is connected to the next process; the outer jacket of the jacketed defluorination reactor 3 is connected to a medium-pressure steam pipe 7.
[0016] Furthermore, a low-pressure steam coil 6 is provided in the mixing tank 1 to preliminarily increase the temperature of the mixture and accelerate the reaction rate.
[0017] Furthermore, the top of the mixing tank 1 is connected to a fan 4 to extract a small amount of fluorine-containing gas from the reaction for treatment.
[0018] Furthermore, the bottom of the inner jacket of the jacketed defluorination reactor 3 is connected to a defluorination liquid circulation pump 301 , and the defluorination liquid circulation pump 301 is connected to a circulation nozzle 303 , and the circulation nozzle 303 is located at the top of the inner part of the jacketed defluorination reactor 3 .
[0019] Furthermore, the feed port of the water circulation cooler 302 is connected to the steam condensate tank 5 .
[0020] Furthermore, a liquid drain 8 is provided at the bottom of the inner jacket of the jacketed defluorination reactor 3, and a ball valve is provided on the liquid drain 8; a condensate drain 9 is provided at the bottom of the outer jacket of the jacketed defluorination reactor 3, and a ball valve is provided on the condensate drain 9.
[0021] The above device is used in the following process: the fluorine-containing liquid is transported to the mixing tank 1 through the feed pipe 102, the fluorine-containing agent (active silica) is added to the mixing tank 1 through the fluorine-containing agent tank 2, the stirring paddle is turned on, the low-pressure steam coil 6 is turned on to heat the mixed material, and the fan 4 is turned on to extract the small amount of fluorine-containing gas released in the reaction in this step, and the mixed mixed liquid is transported to the inner jacket of the jacketed defluorination reactor 3 through the mixed liquid delivery pump 101, and the medium-pressure steam tank 7 is turned on to heat the reactor by the jacket. The mixed liquid in the reactor is defluorinated and the defluorination liquid circulation pump 301 is turned on at the same time. The mixed liquid is circulated and sprayed in the reactor through the circulation nozzle 303, and countercurrently contacts with the medium-pressure steam in the bottom jacket to bring out the fluorine in the mixed liquid. The waste heat steam is mixed with the fluorine-containing gas (hydrogen fluoride and silicon tetrafluoride). The fluorine-containing gas after cooling in the water circulation cooler 302 is pumped to the next process through the fan 4, and the steam condensate is recovered to the steam condensate tank 5. The defluorinated liquid is discharged through the liquid discharge tank 8, and part of the steam condensate is discharged through the condensate water discharge tank.
Claims
1. A highly efficient fluorine recovery and utilization device, comprising a mixing tank (1), the top of the mixing tank (1) being connected to a feed pipe (102) and an overflow fluorine agent tank (2), characterized in that: The discharge port of the mixing tank (1) is connected to a mixed liquid delivery pump (101), the mixed liquid delivery pump (101) is connected to the bottom of the inner jacket of the jacketed defluorination reactor (3), the top of the jacketed defluorination reactor (3) is connected to the feed port of a water circulation cooler (302), the discharge port of the cooler (302) is connected to a fan (4), and the fan (4) is connected to the next process; The outer jacket of the jacketed defluorination reactor (3) is connected to a medium-pressure steam pipe (7).
2. The high-efficiency fluorine recovery and utilization device according to claim 1, characterized in that: A low-pressure steam coil (6) is arranged in the mixing tank (1).
3. The high-efficiency fluorine recovery and utilization device according to claim 1, characterized in that: The top of the mixing tank (1) is connected to the fan (4).
4. The high-efficiency fluorine recovery and utilization device according to claim 1, characterized in that: The bottom of the inner jacket of the jacketed defluorination reactor (3) is connected to a defluorination liquid circulation pump (301), and the defluorination liquid circulation pump (301) is connected to a circulation nozzle (303), and the circulation nozzle (303) is located at the top of the inner part of the jacketed defluorination reactor (3).
5. The high-efficiency fluorine recovery and utilization device according to claim 1, characterized in that: The feed inlet of the water circulation cooler (302) is connected to the steam condensate tank (5).
6. The high-efficiency fluorine recovery and utilization device according to claim 1, characterized in that: A liquid discharge pipe (8) is arranged at the bottom of the inner jacket of the jacketed defluorination reactor (3), and a ball valve is arranged on the liquid discharge pipe (8); a condensate discharge pipe (9) is arranged at the bottom of the outer jacket of the jacketed defluorination reactor (3), and a ball valve is arranged on the condensate discharge pipe (9).