A highly adaptable continuous reaction overflow tank

Abstract

This utility model discloses a highly applicable continuous reaction overflow tank, comprising a set of multi-stage series reaction tanks (1), with adjacent reaction tanks (1) connected by an overflow pipe (2). Each reaction tank (1) is provided with a feed inlet (3) and a stirring device (4). The reaction tank (1) is also provided with a flow guiding device (5) that cooperates with the overflow port (11a). The flow guiding device (5) includes a flow guiding hood (51), which is closed at the upper end and open at the lower end. Inside the hood, a set of cross-arranged flow guiding plates (52) are provided from bottom to top, so that the inner cavity of the flow guiding hood (51) forms an S-shaped flow guiding channel (53). The advantages of this utility model are that it avoids the direct impact of the feed on the overflow port, offsets the damage of the overflow pipe to the flow field, satisfies the requirements of uniform material mixing and reaction, achieves continuous reaction, improves production efficiency and reaction effect, and reduces the content of valuable metal lithium ions in the waste residue.

Description

Technical Field

[0001] This utility model belongs to the technical field of continuous overflow reaction equipment, and in particular relates to a highly applicable continuous reaction overflow tank. Background Technology

[0002] The wet slurry continuous reaction overflow tank is a key piece of equipment used for material slurrying and continuous reaction in fields such as hydrometallurgy and chemical production. It breaks up the agglomeration of solid particles through stirring and shearing, and ensures uniform mixing of materials by mixing liquids. At the same time, it achieves continuous operation by controlling parameters such as the temperature of the tank and the stirring intensity.

[0003] However, when materials are discharged from the top or side of the tank, the overflow pipe accessories often cause the material to "short-circuit" due to excessive flow velocity, or the overflow pipe disrupts the flow field, resulting in an unbalanced flow field distribution in the tank. This leads to uneven mixing of materials, insufficient material residence time, and uneven reaction. Since continuous overflow tanks are operated continuously, continuous operation can be achieved by fixing the reaction time and parameters. However, since the material is overflowed before it has fully reacted, continuous reaction of the material cannot be achieved.

[0004] Furthermore, the current process of converting spodumene into calcined and acid-roasted materials, followed by leaching, pulping, and continuous neutralization reactions in a continuous overflow tank, results in production disruptions due to uneven material mixing, insufficient material residence time, and uneven reactions. Additionally, poor pulping leads to the inclusion of valuable lithium metal in the slag, resulting in resource loss. Valuable lithium elements are lost in the waste slag, increasing production costs. Utility Model Content

[0005] The purpose of this invention is to solve the problems of insufficient reaction, discontinuous production, loss of valuable metals, and high production costs in existing continuous overflow tanks. It provides a highly applicable continuous reaction overflow tank that avoids direct impact of feed into the overflow port, ensures that the fluid flows through most of the area before overflowing, and at the same time counteracts the disruption of the flow field by the overflow pipe, forces uniform mixing of materials, satisfies the requirements of uniform material stirring and reaction, achieves continuous reaction, improves production efficiency and reaction effect, reduces the content of valuable metal lithium ions in waste residue, and improves economic benefits.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A highly adaptable continuous reaction overflow tank includes a set of multi-stage reaction tanks connected in series, with adjacent reaction tanks connected by an overflow pipe. Each reaction tank is equipped with a feed inlet and a stirring device, and the reaction tank is also equipped with a flow guiding device that cooperates with the overflow inlet.

[0008] The flow guiding device includes a flow guiding hood, which is vertically connected to the inner wall of the reaction tank. The overflow port is positioned directly opposite the top of the inner cavity of the flow guiding hood. The upper end of the flow guiding hood is closed, and the lower end is open. Inside the hood, a set of cross-arranged flow guiding plates are arranged from bottom to top, so that the inner cavity of the flow guiding hood forms an S-shaped flow guiding channel.

[0009] Furthermore, the reaction tank includes a primary reaction tank and a secondary reaction tank. The feed inlet of the primary reaction tank includes a top feed inlet and a side feed inlet. The top feed inlet is located at the top of the primary reaction tank, and the side feed inlet is located on the side wall of the primary reaction tank.

[0010] Furthermore, the overflow pipe is connected between the primary reaction tank and the secondary reaction tank, with one end connected to the overflow port of the primary reaction tank and the other end connected to the inlet of the secondary reaction tank, and the height of the overflow port is higher than the height of the inlet.

[0011] Furthermore, the guide plate is an arc-shaped plate, and each guide plate is radially arranged along the inner wall of the guide shroud, with adjacent guide plates arranged alternately.

[0012] Furthermore, the distance between the bottom end of the flow guiding device and the bottom of the reaction tank is set to 20~30cm.

[0013] Furthermore, the flow guiding device is made of 304, 304L, 316, 2205 or a polyethylene-lined composite steel pipe.

[0014] Compared with the prior art, the advantages of the technical solution of this utility model are as follows:

[0015] (1) This utility model adopts a multi-stage series reaction tank, which can be used for various types of continuous reactions. The number of reaction tank stages can be selected by the reaction time or reaction effect, and is not limited to continuous overflow reaction tank, lithium industry, or top and bottom feeding and side feeding.

[0016] (2) The flow guiding device of this utility model is provided with multiple baffles to separate the S-shaped flow channel, which forces the material to flow along a fixed path, ensuring that all materials flow through the same path and residence time before overflowing, which is especially suitable for reaction time sensitive systems;

[0017] (3) This utility model can avoid the material “short circuit” caused by the direct impact of the feed on the overflow port, ensure that the fluid flows through most of the area before overflowing, and at the same time counteract the damage of the overflow pipe to the flow field, force the material to mix evenly, satisfy the requirements of uniform stirring and reaction, and achieve continuous reaction.

[0018] (4) This utility model can effectively improve production efficiency and reaction effect, and the content of valuable metal lithium ions in the waste residue is reduced by 0.1%. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the highly applicable continuous reaction overflow tank of this utility model;

[0020] Figure 2 This is a schematic diagram of the flow guiding device of this utility model. Detailed Implementation

[0021] Example

[0022] To make the present invention clearer, the following description, in conjunction with the accompanying drawings, further illustrates a highly applicable continuous reaction overflow tank of the present invention. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the present invention.

[0023] See Figure 1 and Figure 2 A highly adaptable continuous reaction overflow tank, characterized in that:

[0024] It includes a set of multi-stage series reaction tanks 1, with two adjacent reaction tanks 1 connected by an overflow pipe 2, and each reaction tank 1 is equipped with a feed inlet 3 and a stirring device 4;

[0025] The reaction tank 1 includes a primary reaction tank 11 and a secondary reaction tank 12. The feed inlet 3 of the primary reaction tank 11 includes a top feed inlet 31 and a side feed inlet 32. The top feed inlet 31 is located at the top of the primary reaction tank 11, and the side feed inlet 32 ​​is located on the side wall of the primary reaction tank 11.

[0026] The overflow pipe 2 is connected between the primary reaction tank 11 and the secondary reaction tank 12. One end of the overflow pipe is connected to the overflow port 11a of the primary reaction tank 11, and the other end is connected to the inlet port 12a of the secondary reaction tank 12. The height of the overflow port 11a is higher than the height of the inlet port 12a.

[0027] The reaction tank 1 is also equipped with a flow guiding device 5 that cooperates with the overflow port 11a. The flow guiding device 5 includes a flow guiding hood 51, which is vertically connected to the inner wall of the reaction tank 1. The overflow port 11a is positioned directly opposite the top of the inner cavity of the flow guiding hood 51. The upper end of the flow guiding hood 51 is closed and the lower end is open. Inside the hood 51, a set of cross-arranged flow guiding plates 52 are arranged from bottom to top, so that the inner cavity of the flow guiding hood 51 forms an S-shaped flow guiding channel 53.

[0028] The guide plate 52 is an arc-shaped plate, and each guide plate 52 is radially arranged along the inner wall of the guide shroud 51, with adjacent guide plates 52 arranged alternately.

[0029] In the highly adaptable continuous reaction overflow tank of this embodiment, the material is conveyed to the reaction zone by a feed pump or screw conveyor. The material forms a flow field under the action of the stirring device and fully contacts the reaction medium in the zone. When the material level in the main reaction zone reaches the overflow port height, the material flows smoothly into the overflow pipe by gravity.

[0030] At this point, the guide vanes installed in the tank immediately come into play. First, the first guide vane directs the incoming material to the bottom of the tank, preventing it from directly impacting the liquid surface and causing violent disturbances. The material flows slowly upwards along the surface of the first guide vane, forming an "S"-shaped flow pattern. Guided by the guide vanes, the material changes its flow direction and flows upwards along the channels between adjacent guide vanes. During this process, the guide vanes effectively separate the space within the tank, preventing short-circuiting of the material and ensuring that it undergoes sufficient reaction before flowing to the outlet, significantly increasing the effective residence time of the material in the overflow tank. Simultaneously, the presence of the guide vanes creates an orderly laminar flow state within the tank, reducing backmixing. The material concentration exhibits a uniform trend along the flow path, steadily improving the reaction effect and ensuring the stability and efficiency of the continuous reaction. This achieves highly efficient operation of continuous production, and the lithium ion content in the waste residue is reduced by 0.1%.

[0031] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A highly adaptable continuous reaction overflow tank, characterized in that: It includes a set of multi-stage series reaction tanks (1), with two adjacent reaction tanks (1) connected by an overflow pipe (2). Each reaction tank (1) is provided with a feed inlet (3) and a stirring device (4). The reaction tank (1) is also provided with a flow guiding device (5) that cooperates with the overflow port (11a). The flow guiding device (5) includes a flow guiding hood (51), which is vertically connected to the inner wall of the reaction tank (1), and the overflow port (11a) is set directly opposite the top of the inner cavity of the flow guiding hood (51). The upper end of the flow guiding hood (51) is closed and the lower end is open. A set of cross-arranged flow guiding plates (52) are provided inside the hood (51) from bottom to top, so that the inner cavity of the flow guiding hood (51) forms an S-shaped flow guiding channel (53).

2. The highly adaptable continuous reaction overflow tank according to claim 1, characterized in that: The reaction tank (1) includes a primary reaction tank (11) and a secondary reaction tank (12). The feed inlet of the primary reaction tank (11) includes a top feed inlet (31) and a side feed inlet (32). The top feed inlet (31) is located at the top of the primary reaction tank (11), and the side feed inlet (32) is located on the side wall of the primary reaction tank (11).

3. The highly adaptable continuous reaction overflow tank according to claim 2, characterized in that: The overflow pipe (2) is connected between the primary reaction tank (11) and the secondary reaction tank (12). One end of the overflow pipe (2) is connected to the overflow port (11a) of the primary reaction tank (11), and the other end is connected to the inlet port (12a) of the secondary reaction tank (12). The height of the overflow port (11a) is higher than the height of the inlet port (12a).

4. The highly adaptable continuous reaction overflow tank according to any one of claims 1 to 3, characterized in that: The guide plate (52) is an arc-shaped plate. Each guide plate (52) is radially arranged along the inner wall of the guide shroud (51), and adjacent guide plates (52) are staggered.

5. The highly adaptable continuous reaction overflow tank according to any one of claims 1 to 3, characterized in that: The distance between the bottom of the flow guiding device (5) and the bottom of the reaction tank (1) is set to 20~30cm.

6. The highly adaptable continuous reaction overflow tank according to any one of claims 1 to 3, characterized in that: The flow guiding device (5) is made of 304, 304L, 316, 2205 or a polyethylene-lined composite steel pipe.

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