Brine refining device for potassium perchlorate production

Abstract

The utility model relates to the technical field of brine refining devices, and provides a brine refining device for potassium perchlorate production, which comprises an upper kettle body and a lower kettle body, the bottom of the lower kettle body is fixedly connected with four support legs which are distributed in a circular array, the top of the upper kettle body is fixedly connected with a paddle stirrer, and the paddle stirrer is fixedly connected with a rotary shaft. The output end of the paddle stirrer is rotatably arranged at the top end of the upper kettle body in a penetrating manner and extends into the lower kettle body, a first liquid outlet pipe is fixedly arranged at the bottom end of the outer side wall of the upper kettle body in a penetrating manner, a plurality of partition plate sliding frames which are distributed in a circular array manner are arranged between the upper kettle body and the lower kettle body, and every two adjacent partition plate sliding frames are fixedly connected. According to the technical scheme, the problem that the normal use of the plate-and-frame filter press is seriously influenced because the reaction kettle in the prior art generally does not have a precipitation separation function (namely, calcium and magnesium precipitates generated by the reaction are primarily settled and separated) and only saline water containing a large amount of precipitates after the reaction can be directly conveyed to a subsequent filter pressing process is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of brine purification equipment, specifically, to a brine purification equipment for potassium perchlorate production. Background Technology

[0002] Potassium perchlorate, an important inorganic chemical product, is widely used in fireworks agents, aerospace propellants, and pharmaceutical intermediates. The brine refining process in its production directly determines the product's purity and production stability. If impurities such as calcium, magnesium, and sulfate in the brine are not sufficiently removed, it will not only lead to electrode scaling and decreased current efficiency in subsequent electrolysis processes, but also cause problems such as substandard purity and clumping in the potassium perchlorate product, seriously affecting product quality and market competitiveness.

[0003] In the purification of brine, a salt- and acid- and alkali-resistant stirred reactor (hereinafter referred to as "reactor") is typically used to purify the brine (by adding impurity removal agents and mixing them for reaction). This process generates a large amount of precipitate. The brine containing this precipitate needs to be pumped to a plate and frame filter press for filtration. If the impurity content in the filtrate discharged from the plate and frame filter press exceeds the standard, it will lead to problems such as reduced filtration efficiency, filter cloth clogging, and pump wear, ultimately causing separation failure. This directly affects the stability of the potassium perchlorate brine purification process, thereby increasing production energy consumption and product defect rate. However, existing reactors typically lack sedimentation separation capabilities (i.e., preliminary sedimentation separation of the calcium and magnesium precipitates generated during the reaction). They can only directly transport the brine containing a large amount of precipitate to the subsequent filtration process, severely impacting the normal operation of the plate and frame filter press. Therefore, this invention proposes a brine purification device for potassium perchlorate production. Utility Model Content

[0004] This invention proposes a brine purification device for potassium perchlorate production, which solves the problem in related technologies where the reaction vessel usually does not have a precipitation separation function (i.e., preliminary sedimentation separation of the calcium and magnesium precipitates generated by the reaction), and can only directly transport the brine containing a large amount of precipitates after the reaction to the subsequent pressure filtration process, which seriously affects the normal use of the plate and frame filter press.

[0005] The technical solution of this utility model is as follows: A brine refining device for potassium perchlorate production includes an upper vessel and a lower vessel. The bottom of the lower vessel is fixedly connected to four support legs arranged in a circular array. The top of the upper vessel is fixedly connected to a paddle stirrer. The output end of the paddle stirrer is rotatably inserted through the top of the upper vessel and extends into the interior of the lower vessel. A liquid outlet pipe is fixedly inserted through the bottom of the outer wall of the upper vessel. Several partition slide frames arranged in a circular array are provided between the upper vessel and the lower vessel. Adjacent partition slide frames are fixedly connected to form an annular frame. The bottom of the upper vessel and the top of the lower vessel are both fixedly connected to the partition slide frames.

[0006] A slider is slidably connected inside the partition slide frame. A fan-shaped partition is fixedly connected to the side of the slider near the output end of the paddle mixer. A first push-pull rod is fixedly connected to the side of the slider away from the fan-shaped partition. The end of the first push-pull rod away from the slider slides through the inner wall of the partition slide frame and extends to the side of the partition slide frame away from the output end of the paddle mixer. A second push-pull rod is movably hinged to the end of the first push-pull rod away from the slider. A push-pull handle is rotatably connected to the end of the second push-pull rod away from the first push-pull rod. Two symmetrically distributed L-shaped plates are fixedly connected to the side of the push-pull handle near the first push-pull rod. Two symmetrically distributed locking plates are fixedly connected to the side of the partition slide frame away from the output end of the paddle mixer. A filter mechanism is fixedly connected to the bottom of the lower vessel.

[0007] Preferably, an opening and closing valve is provided on the outer wall of the first liquid outlet pipe.

[0008] Preferably, the side of the fan-shaped baffle near the output end of the paddle mixer is adapted to the outer wall of the output end of the paddle mixer.

[0009] Preferably, a corrosion-resistant rubber strip is provided on the outer wall of the fan-shaped partition.

[0010] Preferably, one of the two locking plates, the one closest to the second push-pull rod, has a buckle fixedly connected to its outer side wall, and the locking plate is fastened to the second push-pull rod by the buckle.

[0011] Preferably, the dimensions of the L-shaped plate are adapted to the inner wall dimensions of the locking plate.

[0012] Preferably, the filtration mechanism includes a cross-shaped mounting plate, with its four ends fixedly connected to the sides of four supporting legs that are close to each other. A filter box is fixedly connected to the upper surface of the cross-shaped mounting plate, and a second liquid outlet pipe is provided on one side of the filter box. A connecting pipe is provided on the top of the filter box, and the filter box is fixedly connected to the bottom of the lower vessel body through the connecting pipe. The filter box is connected to the lower vessel body through the connecting pipe, and an opening and closing valve is provided on the outer wall of the connecting pipe.

[0013] The beneficial effects of this utility model are as follows: By using a fan-shaped baffle that can be pushed and pulled within the baffle slide frame, after adding a purification agent to the brine in the reaction vessel and mixing and reacting to generate a large amount of precipitate, multiple fan-shaped baffles are pushed towards the center to form a sedimentation isolation zone. This traps most of the precipitate in the brine below the fan-shaped baffles, preventing a large amount of precipitate from directly entering the plate and frame filter press. This reduces the frequency of filter cloth clogging and feed pump wear from the source, ensuring the normal operation of the plate and frame filter press and thus guaranteeing the continuity of the potassium perchlorate brine refining process. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the present invention during use;

[0018] Figure 4 This is a schematic diagram of the internal structure of the partition slide frame of this utility model.

[0019] In the diagram: 1. Upper vessel body; 11. Lower vessel body; 12. Support leg; 13. Paddle agitator; 14. No. 1 liquid outlet pipe;

[0020] 2. Partition slide frame; 21. Slider; 22. Fan-shaped partition; 23. Push-pull rod No. 1; 24. Push-pull rod No. 2; 25. Push-pull handle; 26. L-shaped plate; 27. Locking plate;

[0021] 3. Filtration mechanism; 31. Cross mounting plate; 32. Filter box; 33. No. 2 liquid outlet pipe. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0023] Example

[0024] like Figures 1-4 As shown in the figure, this embodiment proposes a brine purification device for potassium perchlorate production, including an upper vessel 1 and a lower vessel 11. The bottom of the lower vessel 11 is fixedly connected to four support legs 12 arranged in a circular array. The top of the upper vessel 1 is fixedly connected to a paddle agitator 13. The output end of the paddle agitator 13 is rotatably inserted through the top of the upper vessel 1 and extends into the interior of the lower vessel 11. A liquid outlet pipe 14 is fixedly inserted through the bottom of the outer wall of the upper vessel 1. A plurality of partition slide frames 2 arranged in a circular array are provided between the upper vessel 1 and the lower vessel 11. Adjacent partition slide frames 2 are fixedly connected to each other to form an annular frame. The bottom of the upper vessel 1 and the top of the lower vessel 11 are both fixedly connected to the partition slide frames 2.

[0025] A slider 21 is slidably connected inside the partition slide frame 2. A fan-shaped partition 22 is fixedly connected to the side of the slider 21 near the output end of the paddle mixer 13. A first push-pull rod 23 is fixedly connected to the side of the slider 21 away from the fan-shaped partition 22. The end of the first push-pull rod 23 away from the slider 21 slides through the inner wall of the partition slide frame 2 and extends to the side of the partition slide frame 2 away from the output end of the paddle mixer 13. A second push-pull rod 24 is movably hinged to the end of the first push-pull rod 23 away from the slider 21. A push-pull handle 25 is rotatably connected to the end of the second push-pull rod 24 away from the first push-pull rod 23. Two symmetrically distributed L-shaped plates 26 are fixedly connected to the side of the push-pull handle 25 near the first push-pull rod 23. Two symmetrically distributed locking plates 27 are fixedly connected to the side of the partition slide frame 2 away from the output end of the paddle mixer 13. A filter mechanism 3 is fixedly connected to the bottom of the lower vessel 11.

[0026] An opening and closing valve is provided on the outer wall of the No. 1 outlet pipe 14, which can be used to open or close the No. 1 outlet pipe 14.

[0027] The side of the fan-shaped baffle 22 near the output end of the paddle mixer 13 is adapted to the outer wall of the output end of the paddle mixer 13. When the fan-shaped baffle 22 converges towards the center, it can fit tightly against the output end of the paddle mixer 13.

[0028] A corrosion-resistant rubber strip is provided on the outer wall of the fan-shaped partition 22. The corrosion-resistant rubber strip can improve the sealing of the sedimentation interception surface formed after the fan-shaped partition 22 gathers towards the center.

[0029] Of the two locking plates 27, the one closest to the second push-pull rod 24 has a buckle fixedly connected to its outer wall. The locking plate 27 is fastened to the second push-pull rod 24 by the buckle, and the buckle can fix the second push-pull rod 24.

[0030] The dimensions of the L-shaped plate 26 are adapted to the inner wall dimensions of the locking plate 27, ensuring that the L-shaped plate 26 can be smoothly embedded into the locking plate 27.

[0031] The filtration mechanism 3 includes a cross mounting plate 31, the four ends of which are fixedly connected to the sides of the four support legs 12 that are close to each other. A filter box 32 is fixedly connected to the upper surface of the cross mounting plate 31. A second outlet pipe 33 is provided on one side of the filter box 32. A connecting pipe is provided on the top of the filter box 32. The filter box 32 is fixedly connected to the bottom of the lower vessel 11 through the connecting pipe. The filter box 32 is connected to the lower vessel 11 through the connecting pipe. An opening and closing valve is provided on the outer wall of the connecting pipe. The filtration mechanism 3 can perform preliminary filtration on the brine containing a lot of sediment intercepted by the fan-shaped partition 22, and then transport it to the feed pump of the plate and frame filter press through the second outlet pipe 33.

[0032] Specifically, after adding a purification agent to the brine in the reaction vessel and mixing and reacting to generate a large amount of precipitate, most of the precipitate settles to the bottom of the lower vessel 11. Then, press the buckle on the locking plate 27 to release the lock on the second push-pull rod 24; then rotate the second push-pull rod 24 until it is collinear with the first push-pull rod 23, forming a straight linkage push rod. At this time, hold the push-pull handle 25 and push the slider 21 to move towards the output end of the paddle agitator 13 within the partition slide frame 2, thereby causing the fan-shaped partition 22 to gradually approach and tightly fit against the output end of the paddle agitator 13, using multiple fan-shaped partitions 22 to form a temporary sedimentation interception surface. Then, push the push-pull handle 25 to rotate around the second push-pull rod 24, causing the L-shaped plate 26 to rotate and embed into the inner wall of the locking plate 27, thereby locking the position of the fan-shaped partition 22. Next, open the valve on outlet pipe 14 to allow the brine containing less sediment above the fan-shaped baffle 22 to flow into the feed pump of the plate and frame filter press. Simultaneously, open the valve on the connecting pipe between filter box 32 and lower vessel 11 to allow the brine containing more sediment in lower vessel 11 to flow into filter box 32 for preliminary filtration. After preliminary filtration to reduce the sediment content, the brine is then fed into the feed pump of the plate and frame filter press. This operation reduces the frequency of filter cloth clogging and feed pump wear in the plate and frame filter press from the source, ensuring the normal operation of the plate and frame filter press and maintaining the continuity of the potassium perchlorate brine refining process.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A brine purification apparatus for potassium perchlorate production, characterized in that, The vessel includes an upper vessel (1) and a lower vessel (11). The bottom of the lower vessel (11) is fixedly connected to four support legs (12) arranged in a circular array. The top of the upper vessel (1) is fixedly connected to a paddle stirrer (13). The output end of the paddle stirrer (13) is rotatably inserted through the top of the upper vessel (1) and extends into the interior of the lower vessel (11). A liquid outlet pipe (14) is fixedly inserted through the bottom of the outer wall of the upper vessel (1). Several partition slide frames (2) arranged in a circular array are provided between the upper vessel (1) and the lower vessel (11). Two adjacent partition slide frames (2) are fixedly connected to form a ring frame. The bottom of the upper vessel (1) and the top of the lower vessel (11) are both fixedly connected to the partition slide frames (2). The partition slide frame (2) is internally connected to a slider (21). A fan-shaped partition (22) is fixedly connected to the side of the slider (21) near the output end of the paddle mixer (13). A first push-pull rod (23) is fixedly connected to the side of the slider (21) away from the fan-shaped partition (22). The end of the first push-pull rod (23) away from the slider (21) slides through the inner wall of the partition slide frame (2) and extends to the side of the partition slide frame (2) away from the output end of the paddle mixer (13). A second push-pull rod (24) is movably hinged to the end away from the slider (21). The end of the second push-pull rod (24) away from the first push-pull rod (23) is rotatably connected to a push-pull handle (25). Two symmetrically distributed L-shaped plates (26) are fixedly connected to the side of the push-pull handle (25) near the first push-pull rod (23). Two symmetrically distributed locking plates (27) are fixedly connected to the side of the partition slide frame (2) away from the output end of the paddle mixer (13). A filter mechanism (3) is fixedly connected to the bottom of the lower vessel (11).

2. The brine purification apparatus for potassium perchlorate production according to claim 1, characterized in that, An opening and closing valve is provided on the outer wall of the No. 1 outlet pipe (14).

3. The brine purification apparatus for potassium perchlorate production according to claim 1, characterized in that, The side of the fan-shaped baffle (22) near the output end of the paddle mixer (13) is adapted to the outer wall of the output end of the paddle mixer (13).

4. The brine purification apparatus for potassium perchlorate production according to claim 1, characterized in that, A corrosion-resistant rubber strip is provided on the outer wall of the fan-shaped partition (22).

5. A brine purification apparatus for potassium perchlorate production according to claim 1, characterized in that, Of the two locking plates (27), the one closest to the second push-pull rod (24) has a buckle fixedly connected to its outer side wall, and the locking plate (27) is fastened to the second push-pull rod (24) by the buckle.

6. The brine purification apparatus for potassium perchlorate production according to claim 1, characterized in that, The dimensions of the L-shaped plate (26) are adapted to the inner wall dimensions of the locking plate (27).

7. The brine purification apparatus for potassium perchlorate production according to claim 1, characterized in that, The filtration mechanism (3) includes a cross mounting plate (31). The four ends of the cross mounting plate (31) are fixedly connected to the sides of the four support legs (12) that are close to each other. A filter box (32) is fixedly connected to the upper surface of the cross mounting plate (31). A second liquid outlet pipe (33) is provided on one side of the filter box (32). A connecting pipe is provided on the top of the filter box (32). The filter box (32) is fixedly connected to the bottom of the lower vessel body (11) through the connecting pipe. The filter box (32) is connected to the lower vessel body (11) through the connecting pipe. An opening and closing valve is provided on the outer wall of the connecting pipe.

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