Salt dissolving barrel for continuously preparing saturated solution

Abstract

The utility model provides a salt dissolving barrel for continuously preparing a saturated solution. The salt dissolving barrel comprises a barrel body (1), a salt inlet pipe (2), an overflow barrel (3), an overflow pipe orifice (4), a water inlet device (5), a drain outlet (6), a top flow inlet (7), a jet orifice (8), a circulating liquid outlet (9), a circulating pump (10) and supporting legs (11), the bottom of the barrel body (1) is conical; the salt inlet pipe (2) extends into the barrel (1) for 2-3 m from the top of the barrel; a filter screen is arranged in front of the overflow pipe orifice (4); the water inlet device (5) comprises a plurality of uniformly arranged water distribution pipes (12) and flanges (13), and the water inlet device (5) is positioned at the bottom of the cylinder body (1); and the drain outlet (6), the top flow inlet (7) and the jet orifice (8) are positioned below the water inlet device (5). The device is suitable for continuously re-dissolving crystals and preparing a saturated solution, and is long in equipment operation period, stable in operation and convenient to control.

Description

Technical Field

[0001] This utility model belongs to the field of chemical technology and relates to a salt dissolving tank for dissolving nickel sulfate, cobalt sulfate and manganese sulfate crystals and continuously preparing saturated solutions. Background Technology

[0002] Refined solutions of nickel sulfate, cobalt sulfate, and manganese sulfate are important raw materials for lithium nickel cobalt manganese oxide products. Providing a stable concentration of refined solutions of nickel sulfate, cobalt sulfate, and manganese sulfate is key to ensuring the quality of lithium nickel cobalt manganese oxide products.

[0003] Traditional salt dissolving tanks are vertical cylindrical flat-bottomed tanks. The salt layer at the bottom of such equipment is prone to crystallization, making it difficult to clean the salt layer during shutdown and resulting in economic losses. With a single water inlet, some crystals do not dissolve completely, and undissolved fine crystals enter the overflow port, leading to unstable solution concentration and affecting the quality of lithium nickel cobalt manganese oxide products in subsequent processes. If a stirrer is installed, some fine salt may float to the surface and mix into the overflow liquid, resulting in unstable solution concentration and affecting the quality of lithium nickel cobalt manganese oxide products in subsequent processes. Utility Model Content

[0004] The purpose of this invention is to provide a salt dissolving tank that is suitable for continuous re-dissolving of crystals and preparation of saturated solutions. It is applicable to the re-dissolving of various crystals such as nickel sulfate, cobalt sulfate, and manganese sulfate. It can solve the problem of frequent cleaning caused by salt layer blockage at the bottom of the equipment, and at the same time reduce the problem of unstable solution concentration caused by fine crystals entering the overflow port. It has the characteristics of easy operation, stable process and long operating cycle.

[0005] This utility model is achieved using the following technical solution:

[0006] A salt dissolving tank for continuously preparing saturated solutions includes a cylinder, a salt inlet pipe, an overflow cylinder, an overflow port, a water inlet device, a drain outlet, a top flow inlet, a jet outlet, a circulating liquid outlet, a circulating pump, and support legs.

[0007] Furthermore, a salt inlet pipe is provided at the top of the cylinder, extending 2-3m into the cylinder from the top; the bottom of the cylinder is conical, with a cone angle of 80-120°.

[0008] Furthermore, the drain outlet is located at the bottom of the cylinder, and the azimuth angle difference between the bottom drain outlet and the jet outlet is 180°.

[0009] Furthermore, a top flow inlet is provided at the very bottom of the cone-shaped cylinder.

[0010] Furthermore, a water inlet device is installed at the bottom of the cylinder, consisting of several evenly arranged water distribution pipes and flanges, with the flanges vertically downward and evenly distributed at the bottom of the water distribution pipes.

[0011] Furthermore, a filter screen is provided in front of the overflow pipe.

[0012] Furthermore, the circulating liquid outlet is located above the side wall of the cylinder; the circulating liquid outlet is connected to the circulating pump inlet via a pipe; and the top flow inlet is connected to the circulating pump outlet via a pipe.

[0013] The beneficial effects of this utility model are: it is applicable to the back dissolution of various crystals such as nickel sulfate, cobalt sulfate, and manganese sulfate, and can solve the problem of frequent cleaning caused by salt layer blockage at the bottom of the equipment. At the same time, it reduces the problem of unstable solution concentration caused by fine crystals entering the overflow port. It has the characteristics of easy operation, stable process and long operating cycle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is an enlarged schematic diagram of the water distribution pipe structure of the water inlet device of this utility model.

[0016] In the diagram: 1. Cylinder; 2. Salt inlet pipe; 3. Overflow cylinder; 4. Overflow port; 5. Water inlet device; 6. Sewage outlet; 7. Top flow inlet; 8. Jet outlet; 9. Circulating liquid outlet; 10. Circulating pump; 11. Support leg; 12. Water distribution pipe; 13. Flange. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 The diagram shows a salt dissolving tank for continuously preparing saturated solutions, comprising a cylinder 1, a salt inlet pipe 2, an overflow cylinder 3, an overflow port 4, a water inlet device 5, a drain port 6, a top flow inlet 7, a jet inlet 8, a circulating liquid outlet 9, a circulating pump 10, and support legs 11. The salt inlet pipe 2 is located at the top of the cylinder 1, extending 2-3 meters into the cylinder from the top. The bottom of the cylinder is conical, with a cone angle of 120-150°. The water inlet device 5 is located near the bottom of the cylinder. The jet inlet 8 and drain port 6 are located near the bottom of the cylinder, symmetrically arranged. The top flow inlet 7 is located at the very bottom of the cylinder. A filter screen is installed before the overflow port 4. The circulating liquid outlet 9 is connected to the inlet of the circulating pump 10 via a pipe. The top flow inlet 7 is connected to the outlet of the circulating pump 10 via a pipe. A filter screen is installed before the overflow port 4.

[0019] Figure 2 As shown: The water inlet device 5 consists of several evenly arranged water distribution pipes 12 and flanges 13, with the flanges 13 vertically downward and evenly distributed at the bottom of the water distribution pipes 12.

[0020] Working process: Nickel sulfate, cobalt sulfate, and manganese sulfate crystals enter the cylinder 1 through the salt inlet pipe 2. When the salt layer reaches a height of 2m, pure water is introduced into the water inlet device 5. The pure water mixes and dissolves with the salt layer through the water distribution pipe. The water inlet device 5 is equipped with uniformly arranged water distribution pipes and flanges, which accelerates the dissolution rate of the crystals and ensures the stability of the concentration of the returned solution.

[0021] As the production load gradually increases and the salt layer height stabilizes at 3-4m, the circulation pump 10 is started. The supernatant from the circulation outlet 9 is pressurized by the pump and enters the top flow inlet 7, so that the solution in the cylinder is mixed evenly, avoiding the formation of dead zones due to salt accumulation at the bottom of the cone, and ensuring that the concentration of the overflow solution from the overflow pipe 4 is stable and tends to be saturated. The entire operation process can be carried out continuously, which greatly improves production efficiency.

[0022] The cylinder 1 adopts a conical bottom design. When the machine is shut down for cleaning, pure water is pumped into the jet port 8 at the bottom of the cone, and brine is discharged from the drain port 6, which is convenient for cleaning when the machine is shut down.

Claims

1. A continuous salt solution saturating tank characterized by: It includes a cylinder (1), a brine inlet pipe (2), an overflow cylinder (3), an overflow pipe outlet (4), a water inlet device (5), a drain outlet (6), a top flow inlet (7), a jet outlet (8), a circulating liquid outlet (9), a circulating pump (10), and a support leg (11); the bottom of the cylinder (1) is conical; the brine inlet pipe (2) extends into the cylinder (1) from the top of the cylinder for 2-3m; a filter screen is provided in front of the overflow pipe outlet (4); the water inlet device (5) includes several evenly arranged water distribution pipes (12) and flanges (13), and the water inlet device (5) is located at the bottom of the cylinder (1); the drain outlet (6), the top flow inlet (7), and the jet outlet (8) are located below the water inlet device (5).

2. A continuous salt solution preparation tank according to claim 1, characterized in that: The bottom of the cylinder (1) is conical, with a cone angle of 80~120°.

3. The salt dissolving tank for continuous preparation of saturated solutions according to claim 1, characterized in that: The drain outlet (6) is located at the bottom of the cylinder (1), and the azimuth angle difference between the drain outlet (6) and the jet outlet (8) is 180°.

4. A continuous salt solution preparation tank according to claim 1, characterized in that: The cylindrical body (1) has a top flow inlet (7) at the bottom of the cone.

5. A continuous salt solution preparation tank according to claim 1, characterized in that: The cylinder (1) is provided with a water inlet device (5) at the bottom. The water inlet device (5) consists of several evenly arranged water distribution pipes (12) and flanges (13). The flanges (13) are evenly distributed vertically downward at the bottom of the water distribution pipes (12).

6. A continuous salt solution preparation tank according to claim 1, characterized in that: The circulating liquid outlet (9) is located above the side wall of the cylinder; the circulating liquid outlet (9) is connected to the inlet of the circulating pump (10) through a pipe; the top flow inlet (7) is connected to the outlet of the circulating pump (10) through a pipe.

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