A continuous separation apparatus for the reaction products of a cerium purification process

Abstract

The utility model discloses a kind of separation devices of continuous type sedimentation reaction product in cerium purification process, belong to cerium production field, including filter device, further including primary separation equalizing tank, the primary separation equalizing tank is connected with feed pipe, equalizing solid-liquid ratio discharge pipe and overflow pipe respectively, equalizing solid-liquid ratio discharge pipe other end is connected with filter device, filter device is further connected with filtrate pipe, filter device is provided with continuous slagging port, the discharge pipe of several sedimentation reaction tanks is connected in parallel on feed pipe. The utility model can continuous production, alleviate the burden of filter device, and the filter residue after separation has high solid content.

Description

Technical Field

[0001] This utility model relates to cerium production, and more specifically, to a separation device for continuous sedimentation reaction products during cerium purification. Background Technology

[0002] In the precipitation process of cerium purification, the liquid after precipitation reaction contains solids and liquids, which are a mixture with a volume ratio of about 1:10. The existing separation method is to directly send the liquid into a plate and frame filter press for filtration.

[0003] This method has the following drawbacks: (1) it is an intermittent operation; (2) the filter press is overloaded. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a separation device for continuous sedimentation reaction products during cerium purification, which aims to improve at least one of the problems mentioned in the background art.

[0005] A separation device for continuous sedimentation reaction products in cerium purification process includes a filtration device and a primary separation equalization tank. The primary separation equalization tank is connected to a feed pipe, an equalization solid-liquid ratio discharge pipe, and an overflow pipe. The other end of the equalization solid-liquid ratio discharge pipe is connected to the filtration device. The filtration device is also connected to a filtrate pipe. The filtration device is equipped with a continuous slag discharge port. The feed pipe is connected in parallel to the discharge pipes of several sedimentation reaction tanks.

[0006] Optionally, the filtration device is a rotary vacuum filter or a belt vacuum filter.

[0007] Optionally, the initial equalization tank is provided with a diaphragm layer, which divides the initial equalization tank into an upper chamber and a lower chamber. The feed pipe and the equalization solid-liquid ratio discharge pipe are each connected to the lower chamber, and the overflow pipe is connected to the upper chamber.

[0008] Optionally, the membrane layer is a layer formed of filter material, the filter material being matched to the particle size of the target product solid of the sedimentation reaction.

[0009] Optionally, the feed pipe is connected to the left side wall of the lower cavity and extends into the lower cavity, and the equalization solid-liquid ratio discharge pipe is connected to the bottom of the lower cavity near the right side wall of the lower cavity and extends into the lower cavity.

[0010] Optionally, flow meters are installed on the feed pipe, the equalization solid-liquid ratio discharge pipe, and the overflow pipe.

[0011] Optionally, a stirring mechanism is installed in the lower cavity, and a stirring power mechanism is installed outside the lower cavity. The stirring mechanism includes a stirring shaft and several blades. The stirring shaft is parallel to the ground, and the blades are installed on the stirring shaft. The blades are helical blades and are distributed in a sinusoidal curve with the stirring shaft as the center line. The stirring shaft extends out of the lower cavity and is connected to the stirring power mechanism. The stirring shaft is connected to the wall of the lower cavity through a bearing seat.

[0012] Optionally, the stirring power mechanism includes a motor and a coupling, with the coupling connected to the stirring shaft and the motor connected to the coupling.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention enables continuous production, reduces the burden on the filtration device, and produces filter residue with a high solids content. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the utility model in use;

[0017] Figure 2 This is a schematic diagram of the initial equalization groove structure of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Initial separation equalization tank; 2. Filter device; 3. Feed pipe; 4. Equalization solid-liquid ratio discharge pipe; 5. Overflow pipe; 6. Filtration pipe; 7. Continuous slag discharge port; 8. Settling reaction tank; 9. Diaphragm layer; 10. Upper chamber; 11. Lower chamber; 12. Stirring mechanism; 13. Stirring shaft; 14. Blade; 15. Motor; 16. Coupling. Detailed Implementation

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise precisely specified.

[0021] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0024] Please refer to Figures 1-2 , Figure 1 This is a schematic diagram of the utility model in use. Figure 2 This is a schematic diagram of the initial equalization groove structure of this utility model.

[0025] A separation device for continuous sedimentation reaction products in cerium purification process includes a primary separation equalization tank 1 and a filter device 2. The primary separation equalization tank 1 is connected to a feed pipe 3, an equalization solid-liquid ratio discharge pipe 4 and an overflow pipe 5. The other end of the equalization solid-liquid ratio discharge pipe 4 is connected to the filter device 2. The filter device 2 is also connected to a filtrate pipe 6. The filter device 2 is provided with a continuous slag discharge port 7. The feed pipe 3 is connected in parallel to the discharge pipes of several sedimentation reaction tanks 8.

[0026] During operation, the reacted materials with different solid-liquid ratios from the discharge pipe of the settling reaction tank 8 are mixed and fed into the feed pipe 3 and enter the initial separation equalization tank 1 for clarification and separation. The clear liquid flows out from the overflow pipe 5, and the solid-liquid mixture with a fixed solid-liquid ratio is discharged from the equalization solid-liquid ratio discharge pipe 4 and enters the filter device 2 for filtration. After filtration, the filtrate is continuously discharged through the filtrate pipe 6, and the high solid content filter residue is continuously discharged from the continuous slag discharge port 7, which can realize continuous production of the entire production process.

[0027] In one or more specific embodiments of this utility model, the filtration device 2 is preferably a rotary vacuum filter or a belt vacuum filter. When a rotary vacuum filter is used, the filter disc continuously performs operations such as filtration, drying and slag discharge during rotation. When a belt vacuum filter is used, the filter belt continuously performs operations such as filtration, washing and slag discharge during movement.

[0028] In one or more specific embodiments of this utility model, in order to achieve good equilibrium and separation effect, a diaphragm layer 9 is provided in the initial separation equilibrium tank 1. The diaphragm layer 9 divides the initial separation equilibrium tank 1 into an upper chamber 10 and a lower chamber 11. The feed pipe 3 and the equilibrium solid-liquid ratio discharge pipe 4 are respectively connected to the lower chamber 11, and the overflow pipe 5 is connected to the upper chamber 10. The diaphragm layer 9 is used to prevent the solid product of the sedimentation reaction from entering the upper chamber 10 and being discharged from the overflow pipe 5, thereby preventing product loss.

[0029] In one or more specific embodiments of this utility model, the membrane layer 9 is selected from filter materials that match the particle size of the target product solid of the sedimentation reaction. For example, if the target product is micron-sized Ce(OH)4, the pore size of the membrane layer 9 should be less than 0.5 μm.

[0030] In one or more specific embodiments of this utility model, the feed pipe 3 is connected to the left side wall of the lower cavity 11 and extends into the lower cavity 11, and the equalization solid-liquid ratio discharge pipe 4 is connected to the bottom of the lower cavity 11 near the right side wall of the lower cavity 11 and extends into the lower cavity 11.

[0031] In one or more specific embodiments of this utility model, flow meters are installed on the feed pipe 3, the equalization solid-liquid ratio discharge pipe 4, and the overflow pipe 5 to record the flow rate.

[0032] In one or more specific embodiments of this utility model, in order to achieve better balance and separation effects, a stirring mechanism 12 is installed in the lower cavity 11, and a stirring power mechanism is installed outside the lower cavity 11. The stirring mechanism 12 includes a stirring shaft 13 and several blades 14. The stirring shaft 13 is parallel to the ground, and the blades 14 are mounted on the stirring shaft 13. The blades 14 are helical blades, distributed in a sinusoidal curve with the stirring shaft 13 as the center line. The stirring shaft 13 extends out of the lower cavity 11 and is connected to the stirring power mechanism. The stirring shaft 13 is connected to the wall of the lower cavity 11 through a bearing seat. When the stirring mechanism 12 is working, it can effectively push the material to move axially, generating an overall circulating flow and avoiding local sedimentation. In the working mode with the stirring mechanism 12 installed, the stirring mechanism 12 is not turned on when the material initially enters the initial separation equalization tank 1 after the reaction, so that the material can be quickly clarified and separated. When the solid contents in the lower chamber 11 reach a certain concentration, the stirring mechanism 12 is turned on. When the solid-liquid ratio of the mixture in the lower chamber 11 reaches the appropriate solid-liquid ratio of the filter device 2 (for example, 1:3), the extraction pump installed on the equalization solid-liquid ratio discharge pipe 4 is turned on. The flow rate of the extraction pump is controlled to maintain the amount of solids extracted from the equalization solid-liquid ratio discharge pipe 4 equal to the amount of solids newly entering the lower chamber 11. When the solid content in the equalization solid-liquid ratio discharge pipe 4 is lower than the set lower limit, the extraction rate is reduced (at this time, the amount of solids extracted is lower than the amount of solids newly entering the lower chamber 11). When the solid content in the equalization solid-liquid ratio discharge pipe 4 is greater than the set upper limit, the extraction rate is increased (at this time, the amount of solids extracted is greater than the amount of solids newly entering the lower chamber 11). The value of the upper limit and the lower phase is the appropriate processing value of the filter device 2.

[0033] In one or more specific embodiments of this utility model, the stirring power mechanism includes a motor 15 and a coupling 16, the coupling 16 being connected to the stirring shaft 13, and the motor 15 being connected to the coupling 16.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A separation device for continuous sedimentation reaction products in cerium purification process, comprising a filtration device (2), characterized in that, It also includes a primary separation equalization tank (1), which is connected to a feed pipe (3), a solid-liquid ratio equalization discharge pipe (4) and an overflow pipe (5). The other end of the solid-liquid ratio equalization discharge pipe (4) is connected to a filter device (2). The filter device (2) is also connected to a filtrate pipe (6). The filter device (2) is equipped with a continuous slag discharge port (7). The feed pipe (3) is connected in parallel to the discharge pipes of several sedimentation reaction tanks (8).

2. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 1, characterized in that, The filtration device (2) is a rotary vacuum filter or a belt vacuum filter.

3. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 1, characterized in that, The initial equalization tank (1) is provided with a diaphragm layer (9), which divides the initial equalization tank (1) into an upper chamber (10) and a lower chamber (11). The feed pipe (3) and the equalization solid-liquid ratio discharge pipe (4) are respectively connected to the lower chamber (11), and the overflow pipe (5) is connected to the upper chamber (10).

4. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 3, characterized in that, The membrane layer (9) is a layer formed of filter material, and the particle size of the filter material is matched with that of the target product solid of the sedimentation reaction.

5. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 3, characterized in that, The feed pipe (3) is connected to the left side wall of the lower cavity (11) and extends into the lower cavity (11). The equalization solid-liquid ratio discharge pipe (4) is connected to the bottom of the lower cavity (11) near the right side wall of the lower cavity (11) and extends into the lower cavity (11).

6. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 3, characterized in that, Flow meters are installed on the feed pipe (3), the equalization solid-liquid ratio discharge pipe (4), and the overflow pipe (5).

7. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 3, characterized in that, A stirring mechanism (12) is installed in the lower cavity (11), and a stirring power mechanism is installed outside the lower cavity (11). The stirring mechanism (12) includes a stirring shaft (13) and several blades (14). The stirring shaft (13) is parallel to the ground, and the blades (14) are installed on the stirring shaft (13). The blades (14) are helical blades and are distributed in a sinusoidal curve with the stirring shaft (13) as the center line. The stirring shaft (13) extends out of the lower cavity (11) and is connected to the stirring power mechanism. The stirring shaft (13) is connected to the wall of the lower cavity (11) through a bearing seat.

8. The separation device for continuous sedimentation reaction products in the cerium purification process according to claim 7, characterized in that, The stirring power mechanism includes a motor (15) and a coupling (16). The coupling (16) is connected to the stirring shaft (13), and the motor (15) is connected to the coupling (16).

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