Anti-crystallization equipment and liquid-liquid extraction system

Abstract

The invention provides anti-crystallization equipment and a liquid-liquid extraction system, and relates to the technical field of separation equipment. The anti-crystallization equipment comprises a mixing chamber, a material inlet, a pulse mechanism and an impact type distributor are arranged at the bottom of the mixing chamber, and the pulse mechanism is communicated with the impact type distributor and used for providing pulse type impact power for the impact type distributor. According to the invention, the calcium slag can be effectively prevented from being crystallized and accumulated in the stirrer, and the liquid jet which periodically moves at a high speed has an impact force effect on the crystallized calcium slag to crush the calcium slag, so that the calcium slag gathered at the bottom of the mixing chamber cannot be accumulated into blocks, the calcium slag overflows into the clarifying chamber, and the accumulation of the calcium slag in the mixing chamber is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of separation equipment, and in particular to an anti-crystallization device and a liquid-liquid extraction system. Background Art

[0002] Calcium slag is prone to appear in the process of liquid-liquid extraction decalcification slag crystallization and other crystallization sections, or in the process of separation of other solid slags. The calcium slag accumulates at the bottom of the mixing chamber and the stirring setting to form block crystals and accumulation, which leads to the breakage and bending of the stirring short shaft and the burning of the motor.

[0003] At present, the main way to remove calcium slag is to stop the production line, manually enter the mixing chamber to clean the calcium slag, or improve the tools for cleaning calcium slag to increase the cleaning speed. The disadvantage of stopping the production line is that it leads to increased production pressure, failure to meet production tasks, and a harsh slag cleaning environment.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The objects of the present invention include providing an anti-crystallization device and a liquid-liquid extraction system.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In the first aspect, the present invention provides an anti-crystallization device, including a mixing chamber, wherein the top of the mixing chamber is provided with an agitator extending to the bottom of the mixing chamber, the bottom of the mixing chamber is provided with a material inlet, a pulse mechanism and an impact distributor, and the pulse mechanism is connected to the impact distributor for providing pulse impact power to the impact distributor.

[0008] In an optional embodiment, the impact distributor is provided with a plurality of injection holes, and the pulse mechanism includes a pulse liquid pipe, a compressed air pipe and a jet device. The pulse liquid pipe is vertically arranged, the bottom end of the pulse liquid pipe is connected to the impact distributor, and the top end is connected to the compressed air pipe, and the end of the compressed air pipe away from the pulse liquid pipe is divided into an intake branch and an exhaust branch connected to the external environment, the intake branch is connected to the jet device, the intake branch is provided with a first valve, and the exhaust branch is provided with a second valve.

[0009] In an optional embodiment, at least a portion of the plurality of injection holes are provided with a conical nozzle.

[0010] In an optional embodiment, the opening directions of the plurality of injection holes are toward the axial direction of the mixing chamber.

[0011] In an optional embodiment, the opening rate of the injection hole is 5%-45%.

[0012] In an optional embodiment, the agitator includes a stirring shaft and a conical stirring impeller.

[0013] In an optional embodiment, the surface of the stirring impeller is provided with an anti-crystallization coating.

[0014] In an optional embodiment, the surface of the stirring impeller is in an outwardly protruding arc structure, and the center of the arc structure is located in the direction of the axis of the stirring impeller.

[0015] In an optional embodiment, the anti-crystallization device further comprises a clarification chamber, an overflow port is provided at the upper portion of the mixing chamber, the overflow port is communicated with the clarification chamber, and the top end of the pulse liquid pipe is higher than the height of the overflow port.

[0016] In an optional embodiment, the anti-crystallization device further comprises a centrifuge, wherein the inlet of the centrifuge is communicated with the outlet of the clarification chamber, and the outlet of the centrifuge is communicated with the inlet of the clarification chamber.

[0017] In an optional embodiment, a baffle is further provided in the mixing chamber.

[0018] In a second aspect, the present invention provides a liquid-liquid extraction system, comprising the anti-crystallization device described in any one of the aforementioned embodiments.

[0019] The anti-crystallization device and liquid-liquid extraction system provided by the embodiments of the present invention have the following beneficial effects:

[0020] The anti-crystallization equipment provided by the present invention can effectively prevent calcium slag from crystallizing and accumulating in the agitator through the cooperation of an agitator, a pulse mechanism and an impact distributor, and the pulse mechanism controls the liquid to pass through the holes on the impact distributor to obtain jet acceleration and kinetic energy. The liquid impact force is evenly distributed to form a liquid jet. The periodic high-speed motion of the liquid jet exerts an impact force on the crystallized calcium slag, breaking the calcium slag so that the calcium slag gathered at the bottom of the mixing chamber cannot accumulate into blocks, and the calcium slag overflows into the clarification chamber, reducing the accumulation of calcium slag in the mixing chamber, and effectively preventing the breaking and bending of the stirring short shaft and the burning of the motor; reducing the number of stops caused by slag cleaning and the problem of blockage of inter-stage pipelines. In addition, the present invention also provides a liquid-liquid extraction system including the above-mentioned anti-crystallization equipment, which has high production efficiency and good calcium slag separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of the mixing chamber and the clarifying chamber in the anti-crystallization equipment provided in this embodiment;

[0023] Figure 2 A schematic diagram of the structure of the mixing chamber, the clarifying chamber and the centrifuge in the anti-crystallization equipment provided in this embodiment;

[0024] Figure 3 A schematic diagram of the structure of a mixing chamber in the anti-crystallization device provided in this embodiment at a first viewing angle;

[0025] Figure 4 A schematic diagram of the structure of an agitator in the anti-crystallization device provided in this embodiment;

[0026] Figure 5 A schematic diagram of the structure of a mixing chamber in the anti-crystallization device provided in this embodiment at a second viewing angle;

[0027] Figure 6 A schematic diagram of the structure of the pulse liquid pipe and the impact distributor in the anti-crystallization equipment provided in this embodiment;

[0028] Figure 7 A schematic diagram of the partial structure of the impact distributor in the anti-crystallization equipment provided in this embodiment;

[0029] Figure 8 This is a schematic diagram of the structure of the pulse mechanism and the impact distributor in the anti-crystallization equipment provided in this embodiment.

[0030] Icons: 100-anti-crystallization equipment; 110-mixing chamber; 111-overflow port; 112-material inlet; 113-agitator; 1131-agitation shaft; 1132-agitation impeller; 1133-anti-crystallization coating; 114-pulse mechanism; 1141-pulse liquid pipe; 1142-compressed air pipe; 1143-fluidic device; 1144-inlet branch; 1145-emptying branch; 1146-first valve; 1147-second valve; 115-impact distributor; 1151-injection hole; 1152-conical nozzle; 120-clarification chamber; 130-centrifuge. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0036] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0037] The overall structure, working principle and detailed steps, implementation principle and technical effects of the anti-crystallization device 100 provided by the present invention are described in detail below through embodiments and in combination with the accompanying drawings.

[0038] Example

[0039] See also Figure 1 and Figure 2 The present invention provides an anti-crystallization device 100, including a mixing chamber 110, a clarifying chamber 120 and a centrifuge 130. An overflow port 111 is provided at the upper portion of the mixing chamber 110, the overflow port 111 is connected to the clarifying chamber 120, the inlet of the centrifuge 130 is connected to the outlet of the clarifying chamber 120, and the outlet of the centrifuge 130 is connected to the inlet of the clarifying chamber 120.

[0040] Specifically, see Figure 3 , Figure 5 and Figure 8A stirrer 113 extending to the bottom of the mixing chamber 110 is arranged at the top of the mixing chamber 110, and a baffle plate (not shown) is also arranged in the mixing chamber 110. A material inlet 112, a pulse mechanism 114 and an impact distributor 115 are arranged at the bottom of the mixing chamber 110. The pulse mechanism 114 is connected to the impact distributor 115 to provide a pulse impact power to the impact distributor 115.

[0041] Materials (such as organic phase and aqueous phase) enter the mixing chamber 110 from the material inlet 112, and the agitator 113 stirs and extracts the materials. Figure 4 The agitator 113 includes an agitator shaft 1131 and a conical agitator impeller 1132. A motor for driving the agitator 113 to rotate is also provided on the outer side of the top of the mixing chamber 110. Driven by the motor, the agitator shaft 1131 rotates and drives the conical agitator impeller 1132 to rotate, thereby playing the role of mixing materials. In this embodiment, the conical shape of the agitator impeller 1132 can prevent calcium slag from being deposited on the surface of the agitator impeller 1132. In order to further enhance the effect of anti-calcium crystallization, an anti-crystallization coating 1133 is also provided on the surface of the agitator impeller 1132 in this embodiment. The materials of the anti-crystallization coating 1133 include but are not limited to polyolefins, nano-ceramics and other materials. The provision of the anti-crystallization coating 1133 can make the surface of the agitator impeller 1132 achieve an anti-crystallization effect, improve the many problems caused by calcium crystallization, and at the same time, it can also play a certain anti-corrosion role, and can resist the corrosion of various chemical substances such as acid, alkali, and oxidation. Furthermore, the provision of the anti-crystallization coating 1133 can also improve the wear resistance and hardness of the stirring impeller 1132, thereby improving the strength and durability of the stirring impeller 1132. Furthermore, the curvature of the surface of the stirring impeller 1132 can be adjusted according to the situation. For example, the surface of the stirring impeller 1132 can be an inclined plane or an arc-shaped surface. Specifically in this embodiment, the surface of the stirring impeller 1132 is an arc-shaped structure protruding outward, and the center of the arc-shaped structure is located in the direction of the axis of the stirring impeller 1132. By designing the surface of the stirring impeller 1132 to be an arc-shaped structure protruding outward, the deposition of calcium slag on the surface of the stirring impeller 1132 can be effectively avoided, and the calcium slag can be dropped off by centrifugal action during stirring and rotation. The curvature of the stirring impeller 1132 can be, for example, 30-60°.

[0042] The provision of the baffle plate can increase the residence time of the material in the mixing chamber 110 and ensure the mixing effect of the material.

[0043] See also Figure 5 , Figure 6 and Figure 7The function of the impact distributor 115 is mainly to provide impact power to the liquid through the combination of pulsed compressed air and the jet device 1143 to form a liquid jet, also known as jet technology, so that the calcium slag gathered at the bottom of the mixing chamber 110 cannot accumulate into blocks, and the liquid impact force is evenly distributed. The direction of the liquid jet can be controlled by the opening direction to achieve the purpose of removing the accumulated calcium slag, and the jet speed and impact force can be changed by the jet device 1143. Among them, the airflow or liquid flow ejected from the nozzle under pressure is called a jet. The crystallized calcium slag is crushed by integrated control of its jet intensity through automatic switching, time program control, stroke program control, etc.

[0044] The shape of the impact distributor 115 is roughly matched with the shape of the mixing chamber 110 and is slightly smaller than the size of the mixing chamber 110. Specifically in this embodiment, the mixing chamber 110 is cylindrical, and correspondingly, the shape of the impact distributor 115 is a hollow circular ring, whose diameter is slightly smaller than the inner wall of the mixing chamber 110. The impact distributor 115 is formed by splicing two semicircular ring structures, which is easy to install. The impact distributor 115 is provided with a plurality of injection holes 1151, and the opening direction of the plurality of injection holes 1151 is toward the axial direction of the mixing chamber 110. The injection holes 1151 on the impact distributor 115 can be arranged in multiple rows and columns, so as to achieve impact in different directions in the mixing chamber 110. Furthermore, at least a portion of the multiple injection holes 1151 are provided with a conical nozzle 1152. The setting of the conical nozzle 1152 can accelerate the jet liquid. In this embodiment, the liquid jet technology is used to create an impact force on the accumulated calcium slag crystals. The jet components are used to control the liquid to provide kinetic energy and acceleration, so that the liquid flows at a high speed to obtain kinetic energy, thereby forming impact energy on the calcium slag, breaking the calcium slag, and preventing the calcium slag crystals and other slags from accumulating into blocks at the bottom, making it difficult for the calcium slag crystals to form and overflow into the clarification chamber 120 through the overflow port 111. The opening rate of the injection hole 1151 can be adjusted between 5% and 45% according to the calcium slag content.

[0045] See also Figure 8 The pulse mechanism 114 includes a pulse liquid pipe 1141, a compressed air pipe 1142 and a fluidic device 1143. The pulse liquid pipe 1141 is vertically arranged. The bottom end of the pulse liquid pipe 1141 is connected to the impact distributor 115, and the top end is connected to the compressed air pipe 1142. The top end of the pulse liquid pipe 1141 is higher than the height of the overflow port 111. The end of the compressed air pipe 1142 away from the pulse liquid pipe 1141 is divided into an intake branch 1144 and an exhaust branch 1145 connected to the external environment. The intake branch 1144 is connected to the fluidic device 1143. The intake branch 1144 is provided with a first valve 1146, and the exhaust branch 1145 is provided with a second valve 1147.

[0046] In this embodiment, the pulse liquid pipe 1141 is directly connected to the impact distributor 115. When gas is not introduced into the pulse liquid pipe 1141 to apply pressure, the first valve 1146 is closed and the second valve 1147 is opened. At this time, the pulse liquid pipe 1141 contains the liquid in the mixing chamber 110. Since the top of the pulse liquid pipe 1141 is higher than the height of the overflow port 111, the liquid in the mixing chamber 110 will not enter the compressed air pipe 1142.

[0047] When it is necessary to introduce gas into the compressed air pipe 1142, close the second valve 1147 and open the first valve 1146 at the same time, and use the jet device 1143 to provide periodic compressed air to the compressed air pipe 1142, which can convert the power of compressed gas into periodic power of liquid, provide acceleration and kinetic energy to the liquid, so that the liquid forms a high-speed water jet when passing through the nozzle of the impact distributor 115, thereby realizing periodic pulse kinetic energy to crush calcium slag and other slags, and its main function is to provide liquid jets for slag crushing. Specifically, according to the compressed air pressure of the jet device 1143 adjusted between 0.05-0.6mpa, the compressed air is introduced at a time interval of 0.1-3S, and the exhaust interval depends on the situation.

[0048] The crushed calcium slag and the extracted and separated material enter the clarification chamber 120 from the overflow port 111, reducing the accumulation of calcium slag in the mixing chamber 110 and reducing the frequency of shutdown for slag cleaning; after entering the clarification chamber 120, the material in the clarification chamber 120 is pumped into the centrifuge 130 by a pump, and the calcium slag in the material is separated into solid and liquid by the centrifuge 130, and the calcium slag is discharged into hazardous waste, and the material is re-injected into the clarification chamber 120 for reaction.

[0049] The working principle and process of the anti-crystallization equipment 100 are as follows: the material enters the mixing chamber 110 from the material inlet 112 at the bottom of the mixing chamber 110, and the agitator 113 is driven by a motor to rotate to extract and separate the material. During the material mixing process, the impact distributor 115 and the pulse liquid tube 1141 are filled with the material liquid in the mixing chamber 110. The jet device 1143 is used to provide periodic compressed air to the compressed air tube 1142. The compressed air squeezes the liquid in the pulse liquid tube 1141 to convert the power of the compressed gas into periodic power of the liquid, provide acceleration and kinetic energy to the liquid, and form a high-speed water jet when the liquid passes through the nozzle of the impact distributor 115, thereby realizing periodic pulse kinetic energy to crush calcium slag and other slags. Its main function is to provide liquid jets for slag crushing. The crushed calcium slag and the extracted and separated material enter the clarification chamber 120 from the overflow port 111, reducing the accumulation of calcium slag in the mixing chamber 110 and reducing the frequency of shutdown for slag cleaning; after entering the clarification chamber 120, the material in the clarification chamber 120 is pumped into the centrifuge 130 by a pump, and the calcium slag in the material is separated into solid and liquid by the centrifuge 130, and the calcium slag is discharged into hazardous waste, and the material is re-injected into the clarification chamber 120 for reaction.

[0050] In addition, the present invention also provides a liquid-liquid extraction system, which includes an anti-crystallization device 100 .

[0051] In summary, the anti-crystallization equipment 100 provided by the present invention can effectively prevent calcium slag from crystallizing and accumulating in the agitator 113 through the cooperation of the agitator 113, the pulse mechanism 114 and the impact distributor 115, and the pulse mechanism 114 controls the liquid to pass through the holes on the impact distributor 115 to obtain jet acceleration and kinetic energy, and the liquid impact force is evenly distributed to form a liquid jet. The periodic high-speed motion of the liquid jet exerts an impact force on the crystallized calcium slag, breaks the calcium slag, and prevents the calcium slag gathered at the bottom of the mixing chamber 110 from accumulating into blocks, so that the calcium slag overflows into the clarification chamber 120, reduces the accumulation of calcium slag in the mixing chamber 110, and effectively prevents the breaking and bending of the stirring short shaft and the burning of the motor; reduces the number of stops caused by slag cleaning and the problem of blockage of the interstage pipeline. In addition, the present invention also provides a liquid-liquid extraction system including the above-mentioned anti-crystallization equipment 100, which has high production efficiency and good calcium slag separation effect. It should be understood that the present invention can have a good anti-crystallization effect not only for calcium crystallization, but also for other crystalline substances.

[0052] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An anti-crystallization device, characterized in that: It comprises a mixing chamber, the top of which is provided with an agitator extending to the bottom of the mixing chamber, the bottom of which is provided with a material inlet, a pulse mechanism and an impact distributor, and the pulse mechanism is connected with the impact distributor to provide a pulse impact power for the impact distributor.

2. The anti-crystallization device according to claim 1, characterized in that: The impact-type distributor is provided with a plurality of injection holes, and the pulse mechanism comprises a pulse liquid pipe, a compressed air pipe and a fluidic device. The pulse liquid pipe is vertically arranged, the bottom end of the pulse liquid pipe is connected with the impact-type distributor, and the top end is connected with the compressed air pipe. The end of the compressed air pipe away from the pulse liquid pipe is divided into an intake branch and an exhaust branch connected with the external environment, the intake branch is connected with the fluidic device, a first valve is arranged on the intake branch, and a second valve is arranged on the exhaust branch.

3. The anti-crystallization device according to claim 2, characterized in that: At least a portion of the plurality of injection holes is provided with a conical nozzle; And / or, the opening direction of the plurality of injection holes of the anti-crystallization device is toward the axial direction of the mixing chamber; And / or, the opening rate of the injection holes of the anti-crystallization device is 5%-45%.

4. The anti-crystallization device according to claim 1, characterized in that: The stirrer comprises a stirring shaft and a conical stirring impeller.

5. The anti-crystallization device according to claim 4, characterized in that: The surface of the stirring impeller is provided with an anti-crystallization coating.

6. The anti-crystallization device according to claim 4, characterized in that: The surface of the stirring impeller is in an outwardly protruding arc structure, and the center of the arc structure is located in the direction of the axis of the stirring impeller.

7. The anti-crystallization device according to claim 2, characterized in that: The anti-crystallization device further comprises a clarification chamber, an overflow port is arranged at the upper part of the mixing chamber, the overflow port is communicated with the clarification chamber, and the top end of the pulse liquid pipe is higher than the height of the overflow port.

8. The anti-crystallization device according to claim 7, characterized in that: The anti-crystallization device further includes a centrifuge, an inlet of the centrifuge is communicated with an outlet of the clarification chamber, and an outlet of the centrifuge is communicated with an inlet of the clarification chamber.

9. The anti-crystallization device according to claim 1, characterized in that: A baffle is also provided in the mixing chamber.

10. A liquid-liquid extraction system, characterized in that: The invention comprises the anti-crystallization device according to any one of claims 1 to 9.

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