Phosphoric acid defluorination production device

Abstract

The utility model discloses a phosphoric acid defluorination production device which comprises a defluorination tank, a plurality of groups of supporting legs are fixed on the side wall of the bottom end of the defluorination tank, a tail gas treatment structure is arranged on the side wall of the defluorination tank, and the phosphoric acid defluorination production device further comprises a grinding structure arranged at the top end of the defluorination tank; and the stirring structure is connected to the bottom end of the grinding structure. The stirring structure is fixed to the grinding block through a connecting rod, a conveying pipe in the stirring structure is communicated with the receiving hopper, the motor drives the grinding block to rotate and also drives the conveying pipe and the stirring pipe to rotate, diatomite ground by the grinding block is output into a phosphoric acid solution from the conveying pipe and the stirring pipe, and a plurality of through holes are formed in the stirring pipe. The diatomite can be uniformly output to each part of the phosphoric acid solution, so that the defluorination is uniform, the defluorination speed can be accelerated, and the ground small-particle diatomite can improve the defluorination efficiency of phosphoric acid.

Description

Technical Field

[0001] This application relates to a phosphoric acid defluorination production device. Background Art

[0002] The wet-process phosphoric acid production process is a process of manufacturing phosphoric acid by decomposing phosphate rock with inorganic acids, that is, reacting sulfuric acid with phosphate rock to generate calcium sulfate crystals and phosphoric acid solution, and then performing liquid-solid separation. The separated phosphoric acid solution is collectively referred to as wet-process phosphoric acid. The sources of wet-process phosphoric acid mainly include the dihydrate process, the hemihydrate process, and the hemihydrate-dihydrate process. Since there are some fluorine-containing harmful substances in wet-process phosphoric acid and it cannot be directly used for deep processing production, wet-process phosphoric acid must be defluorinated. Phosphoric acid defluorination production requires the use of a phosphoric acid defluorination production device.

[0003] Among the phosphoric acid defluorination methods, adding a compound of active silica, such as diatomaceous earth, to the phosphoric acid solution can reduce the stability of monofluorophosphoric acid and decompose it, thereby accelerating the defluorination process. The finer the particles of diatomaceous earth, the faster the defluorination rate. However, some diatomaceous earth particles are larger. Adding large-particle diatomaceous earth directly to react with the phosphoric acid solution results in low defluorination efficiency. Moreover, the added compound will first contact the surface of the phosphoric acid solution, resulting in uneven defluorination of the internal phosphoric acid solution, thus making the defluorination effect poor.

[0004] Therefore, it is desirable to provide a phosphoric acid defluorination production device. Summary of the Utility Model

[0005] In this embodiment, a phosphoric acid defluorination production device is provided, which solves the problems that adding large-particle diatomaceous earth directly to react with the phosphoric acid solution results in low defluorination efficiency, and the added compound will first contact the surface of the phosphoric acid solution, resulting in uneven defluorination of the internal phosphoric acid solution, thus making the defluorination effect poor.

[0006] According to one aspect of the present application, a phosphoric acid defluorination production device is provided, including a defluorination tank. Multiple groups of support legs are fixed to the bottom side wall of the defluorination tank. A tail gas treatment structure is provided on the side wall of the defluorination tank. The phosphoric acid defluorination production device further includes:

[0007] A grinding structure, which is arranged at the top of the defluorination tank;

[0008] A stirring structure, which is connected to the bottom end of the grinding structure.

[0009] Further, a feed pipe is fixed in the middle of the side wall of the defluorination tank. A feed inlet is provided at one end of the top of the defluorination tank. Sealing plugs are provided at the top ends of both the feed pipe and the feed inlet.

[0010] Further, a discharge pipe is fixed in the middle of the bottom of the defluorination tank. A valve is fixed on the discharge pipe.

[0011] Further, the tail gas treatment structure includes an exhaust pipe, a water tank, a fixing plate, a liquid inlet, and an outlet pipe. One end of the exhaust pipe is fixedly disposed on the other side wall of the defluorination tank corresponding to the feed pipe, and the other end of the exhaust pipe passes through the water tank and extends to the bottom end inside the water tank.

[0012] Further, the water tank is fixed on the top of the fixing plate, the fixing plate is fixed to the side wall of the defluorination tank, a water inlet is provided at the top of the water tank, a sealing plug is provided at the top end of the water inlet, and an outlet pipe is fixedly provided at the top end side wall of the water tank.

[0013] Further, the grinding structure includes a motor, a grinding block, a grinding hopper, and a grinding plate. The motor is fixed at the middle position on the top of the defluorination tank, the output end of the motor passes through the top of the defluorination tank and is fixed with a grinding block, the grinding block is arranged inside the grinding hopper, and the grinding hopper is fixed to the inner wall of the defluorination tank.

[0014] Further, both the bottom ends of the grinding block and the grinding hopper are spherical, a grinding plate is fixed to the inner wall at the top end of the grinding hopper, and the diameter of the side wall at the top end of the grinding block gradually decreases from top to bottom.

[0015] Further, the stirring structure includes a connecting rod, a receiving hopper, a feeding pipe, a stirring pipe, and through holes. The connecting rod is fixed at the middle position at the bottom of the grinding block, and the bottom end of the connecting rod passes through the grinding hopper and is fixed to the inner wall of the receiving hopper.

[0016] Further, the receiving hopper is slidably connected to the inner wall of the defluorination tank, a feeding pipe is fixed at the middle of the bottom of the receiving hopper, and the feeding pipe is communicated with the receiving hopper.

[0017] Further, multiple groups of stirring pipes are fixed to the side wall of the feeding pipe, the stirring pipes are inclined, the stirring pipes are communicated with the feeding pipe, and a plurality of through holes are provided at the top and bottom of the stirring pipe.

[0018] The advantages of the present application are as follows:

[0019] 1. By providing a grinding structure at the top end of the defluorination tank, diatomaceous earth is poured into the defluorination tank from the feed inlet. The motor drives the grinding block to rotate. When the grinding block rotates, large-particle diatomaceous earth can be ground into small particles, which fall into the receiving hopper through the grinding hopper, and then are output into the phosphoric acid solution through the feeding pipe and the stirring pipe. The small-particle diatomaceous earth can improve the defluorination efficiency of phosphoric acid.

[0020] 2. By providing a stirring structure at the bottom of the receiving hopper, the stirring structure is fixed to the grinding block through a connecting rod, the feeding pipe in the stirring structure is communicated with the receiving hopper. When the motor drives the grinding block to rotate, it will also drive the feeding pipe and the stirring pipe to rotate. The diatomaceous earth ground by the grinding block is output into the phosphoric acid solution through the feeding pipe and the stirring pipe. A plurality of through holes are provided on the stirring pipe, and the diatomaceous earth can be evenly output to each part of the phosphoric acid solution, making the defluorination uniform and also accelerating the defluorination speed. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0023] Figure 2 It is a front view structural schematic diagram of an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the overall structure of the grinding hopper of an embodiment of the present application;

[0025] Figure 4 It is a schematic diagram of the overall structure of the stirring structure of an embodiment of the present application.

[0026] In the figure: 1, defluorination tank; 2, support leg; 3, feed pipe; 4, feed inlet; 5, tail gas treatment structure; 501, exhaust pipe; 502, water tank; 503, fixing plate; 504, water inlet; 505, outlet pipe; 6, discharge pipe; 7, grinding structure; 701, motor; 702, grinding block; 703, grinding hopper; 704, grinding plate; 8, stirring structure; 801, connecting rod; 802, receiving hopper; 803, feeding pipe; 804, stirring pipe; 805, through hole; 9, valve. Detailed Description of the Embodiments

[0027] In order to enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances for the embodiments of this application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] In this application, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe this application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation.

[0030] Moreover, in addition to being able to represent an orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0031] In addition, the terms "installed", "set up", "provided with", "connected", "connected to", "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can also be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with embodiments to detail this application.

[0033] Please refer to Figures 1-4 As shown, a phosphoric acid defluorination production device includes a defluorination tank 1. A plurality of support legs 2 are fixedly arranged on the side wall at the bottom end of the defluorination tank 1. A tail gas treatment structure 5 is arranged on the side wall of the defluorination tank 1. The phosphoric acid defluorination production device further includes:

[0034] A grinding structure 7, and the grinding structure 7 is arranged at the top of the defluorination tank 1;

[0035] The stirring structure 8 is connected to the bottom end of the grinding structure 7.

[0036] In the middle of the side wall of the defluorination tank 1, a feed pipe 3 is fixed. At one end of the top of the defluorination tank 1, a feed inlet 4 is provided. Sealing plugs are provided at the top ends of both the feed pipe 3 and the feed inlet 4.

[0037] In the middle of the bottom of the defluorination tank 1, a discharge pipe 6 is fixed. A valve 9 is fixed on the discharge pipe 6.

[0038] The tail gas treatment structure 5 includes an exhaust pipe 501, a water tank 502, a fixing plate 503, a liquid inlet and an outlet pipe 505. One end of the exhaust pipe 501 is fixedly arranged on the other side wall of the defluorination tank 1 corresponding to the feed pipe 3. The other end of the exhaust pipe 501 passes through the water tank 502 and extends to the inner bottom end of the water tank 502.

[0039] The water tank 502 is fixed on the top of the fixing plate 503. The fixing plate 503 is fixed to the side wall of the defluorination tank 1. An inlet 504 is provided at the top of the water tank 502. A sealing plug is provided at the top end of the inlet 504. An outlet pipe 505 is fixed to the top end side wall of the water tank 502.

[0040] The grinding structure 7 includes a motor 701, a grinding block 702, a grinding hopper 703 and a grinding plate 704. The motor 701 is fixed at the middle position of the top of the defluorination tank 1. The output end of the motor 701 passes through the top of the defluorination tank 1 and is fixed with the grinding block 702. The grinding block 702 is arranged inside the grinding hopper 703. The grinding hopper 703 is fixed to the inner wall of the defluorination tank 1.

[0041] Both the bottom ends of the grinding block 702 and the grinding hopper 703 are spherical. The inner wall of the top end of the grinding hopper 703 is fixed with a grinding plate 704. The diameter of the side wall of the top end of the grinding block 702 gradually becomes smaller from top to bottom.

[0042] The stirring structure 8 includes a connecting rod 801, a receiving hopper 802, a feeding pipe 803, a stirring pipe 804 and through holes 805. The connecting rod 801 is fixed at the middle position of the bottom of the grinding block 702. The bottom end of the connecting rod 801 passes through the grinding hopper 703 and is fixed to the inner wall of the receiving hopper 802.

[0043] The receiving hopper 802 is slidably connected to the inner wall of the defluorination tank 1. At the middle of the bottom of the receiving hopper 802, a feeding pipe 803 is fixed. The feeding pipe 803 is communicated with the receiving hopper 802.

[0044] A plurality of groups of stirring pipes 804 are fixed to the side wall of the feeding pipe 803. The stirring pipes 804 are inclined. The stirring pipes 804 are communicated with the feeding pipe 803. A plurality of through holes 805 are provided at the top and bottom of the stirring pipes 804.

[0045] In this technical solution, while the motor 701 drives the grinding block 702 to rotate, it will also drive the receiving hopper 802, the material conveying pipe 803 and the stirring pipe 804 to rotate. The material falls into the receiving hopper 802 through the grinding hopper 703, and then is output into the phosphoric acid solution through the material conveying pipe 803 and the stirring pipe 804. A plurality of through holes 805 are provided on the stirring pipe 804. The rotation of the stirring pipe 804 can evenly output the diatomaceous earth to each part of the phosphoric acid solution, making the defluorination uniform and also accelerating the defluorination efficiency.

[0046] When this application is in use, the electrical components appearing in the application are externally connected to a power source and a control device during use. First, an appropriate amount of water is filled into the water tank 502. The phosphoric acid solution is input into the defluorination tank 1 from the feed pipe 3, and then the diatomaceous earth is poured into the defluorination tank 1 from the feed port 4. The motor 701 drives the grinding block 702 to rotate. While the grinding block 702 rotates, it will also drive the material conveying pipe 803 and the stirring pipe 804 to rotate. The rotation of the grinding block 702 can grind large-particle diatomaceous earth into small particles. The material falls into the receiving hopper 802 through the grinding hopper 703, and then is output into the phosphoric acid solution through the material conveying pipe 803 and the stirring pipe 804. A plurality of through holes 805 are provided on the stirring pipe 804. The rotation of the stirring pipe 804 can evenly output the diatomaceous earth to each part of the phosphoric acid solution and can also stir the phosphoric acid solution, making the defluorination uniform and also accelerating the defluorination speed. The other substances generated after defluorination are discharged into the water tank 502 through the exhaust pipe 501 and are filtered again by the water in the water tank 502 to improve safety.

[0047] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A phosphoric acid defluorination production device, comprising a defluorination tank (1), wherein a plurality of support legs (2) are fixed to the side wall of the bottom end of the defluorination tank (1), and a tail gas treatment structure (5) is arranged on the side wall of the defluorination tank (1), characterized in that: The phosphoric acid defluorination production device also includes: A grinding structure (7), wherein the grinding structure (7) is arranged at the top of the defluorination tank (1); A stirring structure (8), wherein the stirring structure (8) is connected to the bottom end of the grinding structure (7).

2. The phosphoric acid defluorination production device according to claim 1, characterized in that: A feed pipe (3) is fixed in the middle of the side wall of the defluorination tank (1), a feed port (4) is provided at one end of the top of the defluorination tank (1), and sealing plugs are provided at the top of the feed pipe (3) and the top of the feed port (4).

3. The phosphoric acid defluorination production device according to claim 1, characterized in that: A discharge pipe (6) is fixed in the middle of the bottom of the defluorination tank (1), and a valve (9) is fixed on the discharge pipe (6).

4. The phosphoric acid defluorination production device according to claim 1, characterized in that: The exhaust gas treatment structure (5) comprises an exhaust pipe (501), a water tank (502), a fixing plate (503), a water inlet and an exhaust pipe (505); one end of the exhaust pipe (501) is fixed on the other side wall of the defluorination tank (1) corresponding to the feed pipe (3); the other end of the exhaust pipe (501) passes through the water tank (502) and extends to the bottom end of the water tank (502).

5. The phosphoric acid defluorination production device according to claim 4, characterized in that: The water tank (502) is fixed on the top of a fixing plate (503), the fixing plate (503) is fixed to the side wall of the defluorination tank (1), a water inlet (504) is arranged on the top of the water tank (502), a sealing plug is arranged on the top of the water inlet (504), and an air outlet pipe (505) is fixed on the top of the side wall of the water tank (502).

6. The phosphoric acid defluorination production device according to claim 1, characterized in that: The grinding structure (7) comprises a motor (701), a grinding block (702), a grinding bucket (703) and a grinding plate (704); the motor (701) is fixed at the middle position of the top of the defluorination tank (1); the output end of the motor (701) passes through the top of the defluorination tank (1) and is fixed with a grinding block (702); the grinding block (702) is arranged in the grinding bucket (703); and the grinding bucket (703) is fixed to the inner wall of the defluorination tank (1).

7. The phosphoric acid defluorination production device according to claim 6, characterized in that: The bottom ends of the grinding block (702) and the grinding bucket (703) are both configured to be spherical, a grinding plate (704) is fixed to the inner wall of the top end of the grinding bucket (703), and the diameter of the side wall of the top end of the grinding block (702) gradually decreases from top to bottom.

8. The phosphoric acid defluorination production device according to claim 1, characterized in that: The stirring structure (8) comprises a connecting rod (801), a receiving bucket (802), a feeding pipe (803), a stirring pipe (804) and a through hole (805); the connecting rod (801) is fixed at the middle position of the bottom of the grinding block (702); the bottom end of the connecting rod (801) passes through the grinding bucket (703) and is fixed to the inner wall of the receiving bucket (802).

9. The phosphoric acid defluorination production device according to claim 8, characterized in that: The receiving bucket (802) is slidably connected to the inner wall of the defluorination tank (1), and a material delivery pipe (803) is fixed in the middle of the bottom of the receiving bucket (802), and the material delivery pipe (803) is connected to the receiving bucket (802).

10. The phosphoric acid defluorination production device according to claim 9, characterized in that: A plurality of stirring tubes (804) are fixed to the side wall of the feed pipe (803). The stirring tubes (804) are arranged at an angle. The stirring tubes (804) are connected to the feed pipe (803). A plurality of through holes (805) are arranged at the top and bottom of the stirring tubes (804).

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