Semi-hydrated-dihydrated wet-process phosphoric acid production conversion tank with solid baffle plates

Abstract

The utility model relates to the technical field of semi-hydrated-dihydrated wet-process phosphoric acid production equipment, in particular to a semi-hydrated-dihydrated wet-process phosphoric acid production conversion tank with solid baffle plates, which comprises a tank body, a plurality of baffle plates are uniformly distributed on the inner wall of the tank body along the radial direction of the tank body, each baffle plate is of a solid structure, the baffle plates are vertically arranged, and the baffle plates are connected with the tank body. And the horizontal section is of a triangular structure. According to the semi-hydrated-dihydrated wet-process phosphoric acid production conversion tank with the solid baffle plates, the baffle plates with solid structures are adopted, so that the strength and corrosion resistance of the baffle plates are remarkably enhanced, the problem of device shutdown caused by leakage of the baffle plates in the production process is effectively avoided, and the production stability and continuity are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi - water - dihydrate wet - process phosphoric acid production equipment, and specifically relates to a semi - water - dihydrate wet - process phosphoric acid production conversion tank with solid baffle plates. Background Technique

[0002] In the process of semi - water - dihydrate wet - process phosphoric acid production, the conversion of semi - water slurry to dihydrate slurry is a key step. In this process, sulfuric acid needs to be added to promote the formation of dihydrate calcium sulfate from semi - water calcium sulfate. The traditional design of the conversion tank usually uses hollow trapezoidal columns as baffle plates. However, in the actual production process, there are some problems with this design. Since the baffle plates are often subjected to dynamic stress during the rotation of the agitator paddle and the corrosion of the slurry, leakage is likely to occur, resulting in the shutdown of the device, which has a great impact on the production stability and continuity. This not only increases the maintenance cost but also reduces the production efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a semi - water - dihydrate wet - process phosphoric acid production conversion tank with solid baffle plates to solve the problems mentioned in the above background technique, that is, due to the baffle plates being often subjected to dynamic stress during the rotation of the agitator paddle and the corrosion of the slurry, leakage is likely to occur, resulting in the shutdown of the device, which has a great impact on the production stability and continuity. This not only increases the maintenance cost but also reduces the production efficiency.

[0004] To achieve the above - mentioned purpose, the utility model provides a semi - water - dihydrate wet - process phosphoric acid production conversion tank with solid baffle plates, which includes a tank body. A number of baffle plates are evenly distributed along the radial direction of the inner wall of the tank body. The baffle plates are of solid structure, vertically arranged, and have a triangular cross - section structure.

[0005] Preferably, a manhole is arranged on one side of the lower part of the tank body, a slurry pump outlet is arranged on the other side of the lower part of the tank body, a feed inlet is arranged on one side of the upper part of the tank body, a high - level overflow port is arranged on the other side of the upper part of the tank body, and the height of the high - level overflow port is lower than the height of the feed inlet.

[0006] Preferably, reinforcing ribs are installed on the outer wall of the top of the tank body.

[0007] Preferably, a positioning block is convexly arranged on one side of the inner wall of the tank body. A groove is arranged at the position of the baffle plate close to the positioning block, and the positioning block is in sliding fit with the groove.

[0008] Preferably, the groove is a groove with an open bottom. A convex spherical surface is arranged at the top of the positioning block, a counterbore adapted to the convexity is arranged at the top of the groove, and the groove slides along the positioning block until the counterbore is clamped on the convex spherical surface.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] In the semi-aqueous - di-aqueous wet-process phosphoric acid production conversion tank with a solid baffle plate, by adopting a baffle plate with a solid structure, the strength and corrosion resistance of the baffle plate are significantly enhanced, effectively avoiding the problem of equipment shutdown caused by leakage of the baffle plate during the production process, and greatly improving the production stability and continuity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0012] Figure 2 is a schematic side view structure diagram of the baffle plate in the present utility model;

[0013] Figure 3 is a schematic top view structure diagram of the baffle plate in the present utility model;

[0014] Figure 4 is a partial structure schematic diagram of the baffle plate in the present utility model.

[0015] The meanings of each reference numeral in the figure are as follows:

[0016] 1, tank body; 11, feed inlet; 12, manhole; 13, high-level overflow port; 14, slurry pump outlet; 15, stiffening rib; 2, baffle plate; 21, groove; 3, positioning block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] The present utility model provides a semi-aqueous - di-aqueous wet-process phosphoric acid production conversion tank with a solid baffle plate, as Figures 1 - 4 shown, including a tank body 1. A plurality of baffle plates 2 are annularly and equidistantly installed on the inner wall of the tank body 1. The baffle plates 2 are of solid structure, the baffle plates 2 are vertically arranged, and the horizontal cross-section is in a triangular structure, and the triangular structure is arc-shaped near the inner wall surface of the tank body 1. By adopting the baffle plates 2 with a solid structure, the strength and corrosion resistance of the baffle plates are significantly enhanced, effectively avoiding the problem of equipment shutdown caused by leakage of the baffle plates during the production process, thereby greatly improving the production stability and continuity.

[0019] In this embodiment, a feed inlet 11 is provided on one side of the upper part of the tank body 1 for the entry of materials. On the other side of the upper part of the tank body 1, a high-level overflow port 13 is provided, and the height of the high-level overflow port 13 is lower than that of the feed inlet 11.

[0020] Specifically, a manhole 12 is provided on one side of the lower part of the tank body 1, and a slurry pump outlet 14 is provided on the other side of the lower part of the tank body 1 for the extraction of slurry.

[0021] Furthermore, a reinforcing rib 15 is installed on the outer wall of the top of the tank body 1 to improve the strength of the overall structure of the tank body 1.

[0022] Furthermore, a positioning block 3 is convexly provided outward on one side of the inner wall of the tank body 1. A groove 21 is provided on the baffle plate 2 near the positioning block 3, and the positioning block 3 is slidably engaged with the groove 21. The groove 21 is a groove with an open bottom. A convex spherical surface is provided on the top of the positioning block 3, and a counterbore adapted to the convex spherical surface is provided on the top of the groove 21. The groove 21 slides along the positioning block 3 until the counterbore is clamped on the convex spherical surface. When installing the baffle plate 2, first cooperate it with the positioning block 3 and the groove 21, and then slide it downward until the counterbore is clamped on the convex spherical surface. After the positions of the two are relatively fixed, the contact gap between the baffle plate 2 and the inner wall of the tank body 1 is fully welded to complete the rapid installation and fixation of the baffle plate 2.

[0023] When the semi-hydrate to dihydrate wet-process phosphoric acid production conversion tank with a solid baffle plate of the present utility model is in use, first, during the production process, materials enter the tank body 1 through the feed inlet 11. With the rotation of the stirring paddle and the addition of sulfuric acid, the semi-hydrate slurry begins to convert into the dihydrate slurry. The solid baffle plate 2 plays an important guiding and mixing role in the tank body 1, enhancing the turbulence effect of the slurry and contributing to the progress of the reaction.

[0024] As the reaction progresses, the dihydrate slurry is gradually generated and overflows through the high-level overflow port 13 and enters the next process. When it is necessary to extract the slurry in the tank body 1, it can be extracted through the slurry pump outlet 14.

[0025] During the long-term use process, since the baffle plate 2 adopts a solid structure, and a cover plate is installed at its top through a flange structure, and the strength at the flange structure is enhanced at the same time, the baffle plate 2 has excellent corrosion resistance and strength, effectively avoiding the problem of device shutdown caused by leakage.

[0026] In summary, the semi-hydrate to dihydrate wet-process phosphoric acid production conversion tank with a solid baffle plate provided by the present utility model significantly improves the production stability and continuity by optimizing the structure and installation method of the baffle plate, providing a more reliable and efficient conversion device for the semi-hydrate to dihydrate wet-process phosphoric acid production.

[0027] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present utility model, which are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A semi-aqueous to dihydrate wet-process phosphoric acid production conversion tank with solid baffles, comprising a tank body (1), characterized in that: The inner wall of the trough body (1) is evenly distributed with a plurality of baffles (2) along its radial direction; the baffles (2) are solid structures; the baffles (2) are vertically arranged, and the horizontal cross-section is a triangular structure.

2. The semi-aqueous-dihydrate wet-process phosphoric acid production conversion tank with solid baffles according to claim 1, characterized in that: A manhole (12) is provided on one side of the lower portion of the tank body (1), a slurry pump outlet (14) is provided on the other side of the lower portion of the tank body (1), a feed port (11) is provided on one side of the upper portion of the tank body (1), and a high-level overflow port (13) is provided on the other side of the upper portion of the tank body (1), wherein the height of the high-level overflow port (13) is lower than the height of the feed port (11).

3. The semi-aqueous-dihydrate wet-process phosphoric acid production conversion tank with solid baffles according to claim 1, characterized in that: A reinforcing rib (15) is installed on the top outer wall of the tank body (1).

4. The semi-aqueous-dihydrate wet-process phosphoric acid production conversion tank with solid baffles according to claim 1, characterized in that: A positioning block (3) is provided on one side of the inner wall of the trough body (1) so as to protrude outwards, and a groove (21) is provided on the baffle plate (2) near the positioning block (3), and the positioning block (3) is slidably engaged with the groove (21).

5. The semi-aqueous-dihydrate wet-process phosphoric acid production conversion tank with solid baffles according to claim 4, characterized in that: The groove (21) is a groove with an open bottom, a convex spherical surface is provided on the top of the positioning block (3), a countersunk hole matching the convexity is provided on the top of the groove (21), and the groove (21) slides along the positioning block (3) until the countersunk hole is engaged with the convex spherical surface.

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