Extraction crystallization device

Abstract

The utility model belongs to the field of extraction crystallization devices, and discloses an extraction crystallization device which comprises a mixing chamber and a precipitation separation chamber. A stirrer is arranged in the mixing chamber, and the stirrer effectively promotes the mixing between the stock solution and the extraction agent through the rotational motion of the stirrer, so that a uniformly mixed solution is obtained. The mixing chamber is further provided with a liquid overflow pipe, when the mixed liquid reaches the preset capacity, the mixed liquid can flow out of the liquid overflow pipe, excessive accumulation of the mixed liquid is avoided, and meanwhile material supply is provided for the subsequent separation process. The precipitation separation chamber is communicated with the liquid overflow pipe, and in the precipitation separation chamber, an extracting agent in the mixed liquid absorbs moisture in the stock solution to separate out to-be-crystallized substances in the stock solution, so that solid crystals are formed, gradually deposit in the precipitation separation chamber and are regularly discharged through a discharge port, and effective separation of a solid-phase product and a liquid-phase product is realized. And a liquid-phase product is discharged through the liquid outlet. The extraction crystallization device has the advantage of low energy consumption.

Description

Technical Field

[0001] The utility model belongs to the technical field of extraction crystallization devices, and more specifically, relates to an extraction crystallization device. Background Art

[0002] Manganese sulfate, an important chemical raw material, involves multiple complex steps in its production, with crystallization being particularly critical. Traditionally, manganese sulfate production involves obtaining a manganese sulfate solution through the pyrolusite method, the rhodochrosite method, or the two-ore acidification method. This solution is then subjected to a series of operations, including evaporation, concentration, crystallization, filtration, and drying, to produce the final product. Within this process, the crystallization step typically utilizes evaporative crystallization.

[0003] The conventional evaporation crystallization method involves feeding a manganese sulfate solution into an evaporation tank, where it is heated to evaporate the water. As the water content decreases, the solution gradually concentrates until it reaches saturation, at which point manganese sulfate crystals begin to precipitate. This process consumes a significant amount of heat energy, making it particularly energy-intensive when the manganese sulfate production volume is high. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an extraction crystallization device to solve the technical problems of high energy consumption and high production cost in the crystallization process in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] Provided is an extraction crystallization device, comprising:

[0007] a mixing chamber having a stirrer for mixing the raw liquid and the extractant to obtain a mixed liquid; the mixing chamber also having an overflow pipe;

[0008] The sedimentation separation chamber is connected to the overflow pipe, and the mixed liquid is separated into solid phase products and liquid phase products in the sedimentation separation chamber; the sedimentation separation chamber has a discharge port and a liquid discharge port, the discharge port is used to discharge the solid phase product, and the liquid discharge port is used to discharge the liquid phase product.

[0009] As a further improvement of the above technical solution:

[0010] Optionally, there are multiple mixing chambers, the number of the sedimentation and separation chambers corresponds to the number of the mixing chambers, and the mixing chambers and the sedimentation and separation chambers are arranged in sequence along the liquid flow path.

[0011] Optionally, the overflow pipe has a liquid inlet and a liquid outlet, the liquid inlet extends into the mixing chamber and is arranged close to the bottom of the mixing chamber; the liquid outlet extends into the sedimentation separation chamber.

[0012] Optionally, a plurality of baffles spaced apart from each other are provided in the sedimentation separation chamber.

[0013] Optionally, the baffle is arranged at an angle to the height direction of the sedimentation and separation chamber.

[0014] Optionally, the sedimentation and separation chamber has at least two drainage ports, and each drainage port is located at a different height position of the sedimentation and separation chamber.

[0015] Optionally, the bottom of the sedimentation separation chamber is a conical bottom, the large end of the conical bottom is upward, and the tip is downward, and the discharge port is located at the tip of the conical bottom.

[0016] Optionally, a star-shaped discharger is further included, and the star-shaped discharger is installed at the discharge port.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The extraction crystallization device provided by the present application includes a mixing chamber and a sedimentation separation chamber. An agitator is provided in the mixing chamber, and the agitator effectively promotes the mixing between the original solution and the extractant through its rotational motion, thereby obtaining a uniformly mixed mixed solution. The mixing chamber also has an overflow pipe. When the mixed solution reaches a preset capacity, it can flow out from the overflow pipe to avoid excessive accumulation of the mixed solution, and also provide material supply for the subsequent separation process. The sedimentation separation chamber is connected to the overflow pipe. In the sedimentation separation chamber, the extractant in the mixed solution absorbs the moisture in the original solution, causing the substance to be crystallized in the original solution to precipitate, thereby forming solid crystals, which are gradually deposited in the sedimentation separation chamber and are regularly discharged through the discharge port to achieve effective separation of solid-phase products and liquid-phase products. The liquid-phase product is discharged through the discharge port.

[0019] Compared with traditional crystallization devices, the extraction crystallization device of the present application does not require energy to evaporate the water in the raw liquid, and therefore has the advantage of low energy consumption. It can also recover the liquid product and extract the extractant therein for reuse, thereby reducing the cost and loss of the extractant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structural layout of the extraction crystallization device of the present application;

[0022] Among them, the reference numerals in the figures are:

[0023] 1. Mixing chamber; 11. Overflow pipe;

[0024] 111. Liquid inlet; 112. Liquid outlet;

[0025] 2. Agitator; 3. Sedimentation and separation chamber;

[0026] 31. Discharge port; 32. Liquid discharge port;

[0027] 33. Baffle; 4. Star-shaped discharger. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0029] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0032] Unless otherwise defined, all technical terms used hereinafter have the same meanings as those generally understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0033] like Figure 1 As shown, the present application provides an extraction crystallization device, comprising a mixing chamber 1 and a precipitation separation chamber 3.

[0034] Specifically, a stirrer 2 is provided in the mixing chamber 1. The stirrer 2 effectively promotes the mixing between the stock solution and the extractant through its rotational motion, thereby obtaining a uniformly mixed mixed solution. The mixing chamber 1 also has an overflow pipe 11. When the mixed solution reaches a preset capacity, it can flow out from the overflow pipe 11 to avoid excessive accumulation of the mixed solution, while also providing material supply for the subsequent separation process. The sedimentation separation chamber 3 is connected to the overflow pipe 11. In the sedimentation separation chamber 3, the extractant in the mixed solution absorbs the moisture in the stock solution, causing the substance to be crystallized in the stock solution to precipitate, thereby forming solid crystals, which are gradually deposited in the sedimentation separation chamber 3 and are regularly discharged through the discharge port 31, thereby achieving effective separation of solid-phase products and liquid-phase products. The liquid-phase product is discharged through the discharge port 32. Among them, the extractant can specifically be anhydrous ethanol or concentrated sulfuric acid.

[0035] Compared with traditional crystallization devices, the extraction crystallization device of the present application does not require energy to evaporate the water in the raw liquid, and therefore has the advantage of low energy consumption. It can also recover the liquid product and extract the extractant therein for reuse, thereby reducing the cost and loss of the extractant.

[0036] In a specific embodiment of the present application, there are multiple mixing chambers 1, and the number of sedimentation separation chambers 3 corresponds to the number of mixing chambers 1. Each mixing chamber 1 and each sedimentation separation chamber 3 is arranged in sequence along the liquid flow path, thereby forming a multi-stage sedimentation separation to fully crystallize and precipitate the substance to be crystallized in the original liquid.

[0037] like Figure 1 As shown, in a specific embodiment of the present application, the overflow pipe 11 has a liquid inlet 111 and a liquid outlet 112. The liquid inlet 111 extends into the mixing chamber 1 and is located near the bottom of the mixing chamber 1, thereby ensuring that the mixed liquid in the mixing chamber 1 is fully mixed and uniformly flows into the liquid inlet 111. The liquid outlet 112 extends into the sedimentation and separation chamber 3, allowing the mixed liquid to smoothly transfer from the mixing chamber 1 to the sedimentation and separation chamber 3.

[0038] like Figure 1 As shown, in a specific embodiment of the present application, a plurality of spaced-apart baffles 33 are provided within the sedimentation and separation chamber 3. The baffles 33 are used to obstruct the flow of liquid within the sedimentation and separation chamber 3, thereby reducing the flow velocity of the liquid and providing more time for suspended particles or crystalline substances in the liquid to settle and aggregate. Due to the presence of each flow plate 33, the liquid is forced to come into contact with the plate surface as it flows through, thereby increasing the liquid's adhesion area. This increased adhesion area not only provides more attachment points and growth space for the growth of crystalline substances, but also greatly improves the crystallization efficiency.

[0039] like Figure 1As shown, in a specific embodiment of the present application, the baffle 33 is arranged at an angle to the height direction of the sedimentation and separation chamber 3. When the liquid flows through the baffle 33, due to the angle between the plate surface and the direction of liquid flow, the suspended particles or crystalline substances in the liquid will be subject to a certain resistance and move downward along the plate surface, which not only helps to accelerate the accumulation of crystallized precipitates at the bottom of the sedimentation and separation chamber 3, but also reduces their suspension time in the liquid, thereby improving the efficiency of sedimentation and separation. In addition, due to the angle between the plate surface and the direction of liquid flow, the liquid will produce a certain turbulent effect when flowing through the baffle 33, which helps to break up the agglomeration state between the suspended particles or crystalline substances in the liquid, making them easier to separate and precipitate.

[0040] like Figure 1 As shown, in a specific embodiment of the present application, the sedimentation and separation chamber 3 has at least two drainage ports 32. Each drainage port 32 is located at a different height within the sedimentation and separation chamber 3. During the sedimentation and separation process, due to the density difference between the extractant phase and the dilute stock liquid phase, they naturally separate into layers within the sedimentation and separation chamber 3. At this point, the extractant phase and the dilute stock liquid phase can be separated by selectively opening the drainage ports 32 at different heights.

[0041] Specifically, when the liquid in the sedimentation and separation chamber 3 reaches a stable stratified state, the lower drain port 32 can be opened to discharge the denser extractant phase, facilitating its recovery and reuse. After the extractant phase is discharged, the higher drain port 32 can be opened to discharge the remaining dilute raw liquid phase, achieving effective separation of the two liquids.

[0042] like Figure 1 As shown, in a specific embodiment of the present application, the bottom of the sedimentation separation chamber 3 is a conical bottom, with the large end of the conical bottom facing upward and the tip facing downward, and the discharge port 31 is located at the tip of the conical bottom.

[0043] During the sedimentation and separation process, the crystallized precipitate naturally sinks due to gravity and accumulates near the tip of the conical bottom. When the crystallized precipitate reaches a certain amount, it can be conveniently discharged through discharge port 31. Because discharge port 31 is located at the lowest point of the conical bottom, it can ensure that all crystallized precipitate is completely discharged, avoiding residue and waste.

[0044] like Figure 1As shown, in one specific embodiment of the present application, the extraction crystallization apparatus further includes a star-shaped discharger 4. Star-shaped discharger 4 is mounted at discharge port 31 and comprises a rotor impeller with several blades, a housing, seals, a reducer, an electric motor, and the like. During the extraction crystallization process, when a certain amount of crystallized precipitate accumulates within the precipitation separation chamber 3, it falls under its own weight and fills the gaps between the rotor impeller blades of the star-shaped discharger 4. As the rotor impeller rotates, the material is gradually carried by the blades to the lower portion of the star-shaped discharger 4 and ultimately discharged smoothly.

[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An extraction crystallization device, characterized in that: include: A mixing chamber (1) having a stirrer (2) for mixing the stock solution and the extractant to obtain a mixed solution; the mixing chamber (1) also has an overflow pipe (11); The sedimentation separation chamber (3) is connected to the overflow pipe (11), and the mixed liquid is separated into a solid phase product and a liquid phase product in the sedimentation separation chamber (3); the sedimentation separation chamber (3) has a discharge port (31) and a liquid discharge port (32), the discharge port (31) is used to discharge the solid phase product, and the liquid discharge port (32) is used to discharge the liquid phase product.

2. The extractive crystallization device according to claim 1, characterized in that The number of the mixing chambers (1) is multiple, the number of the sedimentation and separation chambers (3) corresponds to the number of the mixing chambers (1), and the mixing chambers (1) and the sedimentation and separation chambers (3) are arranged in sequence along the liquid flow path.

3. The extractive crystallization device according to claim 1, characterized in that The overflow pipe (11) has a liquid inlet (111) and a liquid outlet (112), wherein the liquid inlet (111) extends into the mixing chamber (1) and is arranged close to the bottom of the mixing chamber (1); and the liquid outlet (112) extends into the sedimentation separation chamber (3).

4. The extractive crystallization device according to any one of claims 1 to 3, characterized in that A plurality of baffles (33) spaced apart from each other are provided in the sedimentation separation chamber (3).

5. The extractive crystallization device according to claim 4, characterized in that: The baffle (33) is arranged at an angle to the height direction of the sedimentation separation chamber (3).

6. The extractive crystallization device according to any one of claims 1 to 3, characterized in that: The sedimentation separation chamber (3) has at least two drainage ports (32), and each drainage port (32) is located at a different height position of the sedimentation separation chamber (3).

7. The extractive crystallization device according to any one of claims 1 to 3, characterized in that: The bottom of the sedimentation separation chamber (3) is a conical bottom, with the large end of the conical bottom facing upward and the tip facing downward, and the discharge port (31) is located at the tip of the conical bottom.

8. The extractive crystallization device according to any one of claims 1 to 3, characterized in that: It also includes a star-shaped discharger (4), which is installed at the discharge port (31).

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