Centrifugal separation device and separation system
By using a centrifugal separation device to separate residual acid and extractant through centrifugal force generated by high-speed rotation, the problem of low separation efficiency in existing technologies has been solved, achieving high-purity separation and high-efficiency production.
Patent Information
- Application Number
- CN202422953470.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In existing technologies, it is difficult to completely remove trace amounts of extractant entrained in residual acid, which affects subsequent production processes. Furthermore, traditional separation methods are inefficient and cannot meet the needs of large-scale production. In addition, the entry of extractant into the water treatment workshop increases the difficulty of treatment and environmental pollution.
A centrifugal separation device is used to separate raffinate and extractant by utilizing the centrifugal force generated by high-speed rotation. Efficient separation is achieved by setting up a stirrer and a collection chamber to obtain high-purity raffinate and extractant.
It achieves efficient separation of extractant and extractant, shortens the production cycle, improves production efficiency, and reduces the difficulty and cost of subsequent processing.
Smart Images
Figure CN223683070U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of separation devices, in particular to a centrifugal separation device and a separation system. BACKGROUND
[0002] With the continuous development of chemical technology, separation devices play a crucial role in chemical production. In particular, in the production process of phosphate devices, the treatment of raffinate acid has become a key link. It is currently found that the raffinate acid storage tank often contains a small amount of extractant, which is manifested as a small amount of oil beads on the surface of the acid. These mixed liquids are then sent to the phosphate device and separated by natural standing. The bottom raffinate acid is used to produce high-purity phosphate, and the top entrained extractant is recovered. However, this natural standing separation method has many technical problems.
[0003] Firstly, the small amount of extractant entrained in the raffinate acid is difficult to completely remove, which will have an adverse effect on the subsequent production process, thereby affecting the quality and yield of the product. Secondly, the mixed liquid process condensate contains difficult-to-handle extractants, which not only increase the difficulty of treatment when entering the water treatment workshop, but also may cause environmental pollution.
[0004] In order to overcome these technical problems, the current technical route mainly focuses on improving the separation efficiency and reducing the amount of entrained extractant. However, the existing separation devices and technical means still have obvious defects. For example, the natural standing separation method has low efficiency and cannot meet the needs of large-scale production; at the same time, due to the small difference in physical properties between the extractant and the raffinate acid, traditional separation methods are difficult to achieve efficient and complete separation.
[0005] Therefore, the present application provides a centrifugal separation device and a separation system. Practical new type content
[0006] In order to overcome the shortcomings of the prior art, the present application provides a centrifugal separation device and a separation system. The centrifugal separation device can separate the mixed liquid in the raffinate acid storage tank by centrifugal extraction, and obtain high-purity raffinate acid and extractant, thereby solving the problem that the natural standing separation method cannot completely remove the small amount of extractant entrained in the raffinate acid, which has an adverse effect on the subsequent production process.
[0007] The beneficial effects of the present application are:
[0008] In a first aspect, the present application provides a centrifugal separation device, which comprises a centrifugal extractor, wherein the feed inlet of the centrifugal extractor is connected to a raffinate acid storage tank;
[0009] The acid outlet of the centrifugal extractor is connected to a refined phosphoric acid tank;
[0010] The oil outlet of the centrifugal extractor is connected to an extractant tank.
[0011] As a preferred technical solution, the centrifugal speed of the centrifugal extractor is 2000-10000r / min.
[0012] As a preferred technical solution, the centrifugal extractor is provided with a stirrer.
[0013] As a more preferred technical solution, the stirrer is a variable frequency stirrer.
[0014] As a preferred technical solution, the centrifugal extractor comprises a mixed liquid inlet, a light phase collection chamber, a heavy phase collection chamber, and a rotating drum, the bottom of the rotating drum is provided with the mixed liquid inlet, the rotating drum is provided with a heavy phase weir plate and a light phase weir plate, the light phase collection chamber is arranged at the top of the light phase weir plate, and the heavy phase collection chamber is arranged at the top of the heavy phase weir plate.
[0015] As a more preferred technical solution, it further comprises a light phase outlet and a heavy phase outlet, the light phase outlet is connected to the light phase collection chamber, and the heavy phase outlet is connected to the heavy phase collection chamber.
[0016] As a more preferred technical solution, the rotating drum is provided with a stirrer in the cavity formed by the rotating drum.
[0017] As a preferred technical solution, the feed inlet of the raffinate acid storage tank is connected to a stripping phase separation tank, the stripping phase separation tank is connected to a stripping mixing tank, the stripping mixing tank is connected to an extraction phase separation tank, and the extraction phase separation tank is connected to an extraction mixing tank.
[0018] As a more preferred technical solution, the feed inlet of the extraction mixing tank is connected to a crude phosphoric acid tank and an extractant tank.
[0019] In a second aspect, the application provides a centrifugal separation system comprising the centrifugal separation device provided in the first aspect.
[0020] The application has the following beneficial effects:
[0021] The centrifugal separation device provided in the application can achieve the following effects: when the mixed liquid enters the centrifugal extractor, the mixed liquid is subjected to a strong centrifugal force under the action of the high-speed rotating drum, and due to the physical property differences (such as density and viscosity) between the extractant and the raffinate acid, they are separated under the action of the centrifugal force, thereby achieving the separation effect and obtaining high-purity raffinate acid and extractant.
[0022] The centrifugal separation device provided by the application has high separation efficiency and short production cycle, and can improve production efficiency. Meanwhile, the centrifugal separation device can collect the extractant and the raffinate acid separately, thereby reducing the difficulty and cost of subsequent treatment. In addition, the device is suitable for large-scale production and can meet the actual needs of chemical production. BRIEF DESCRIPTION OF DRAWINGS
[0023] The application will be further described below in combination with the drawings and examples.
[0024] Figure 1 is a structural schematic diagram of a centrifugal separation device provided by the application;
[0025] Figure 2 is a structural schematic diagram of a centrifugal extractor provided by the application;
[0026] Figure 3 is another structural schematic diagram of a centrifugal separation device provided by the application;
[0027] Figure 4 is a schematic diagram of the material flow of a centrifugal separation device provided by the application during operation;
[0028] 1, centrifugal extractor; 2, raffinate acid storage tank; 3, refined phosphoric acid tank; 4, extractant tank; 5, back-extraction separation tank; 6, back-extraction mixing tank; 7, extraction separation tank; 8, extraction mixing tank; 9, crude phosphoric acid tank; 101, stirrer; 102, mixed liquid inlet; 103, light phase collection chamber; 104, heavy phase collection chamber; 105, rotating drum; 106, light phase outlet; 107, heavy phase outlet; 108, light phase weir; 109, heavy phase weir. DETAILED DESCRIPTION
[0029] The concept, specific structure and technical effects of the application will be described below in combination with examples and drawings to fully understand the purpose, features and effects of the application. Obviously, the described examples are only part of the examples of the application, not all examples. Based on the examples of the application, other examples obtained by those skilled in the art without creative labor are within the scope of protection of the application. In addition, all the coupling / connection relationships involved in the patent do not mean that the components are directly connected, but that a better coupling structure can be formed by adding or reducing coupling accessories according to the specific implementation. The technical features in the creation of the application can be combined interactively without mutual contradiction and conflict.
[0030] As shown in Figure 1 , the application provides a centrifugal separation device, which comprises a centrifugal extractor 1, and a feed inlet of the centrifugal extractor 1 is connected to a raffinate acid storage tank 2.
[0031] The acid outlet of the centrifugal extractor 1 is connected to a refined phosphoric acid tank 3;
[0032] The oil outlet of the centrifugal extractor 1 is connected to an extractant tank 4.
[0033] In the above technical solution, by introducing a centrifugal extractor, the high-efficiency separation of raffinate acid and extractant in the mixed liquid is realized by using the centrifugal force generated by high-speed rotation, thereby overcoming the problem of low efficiency of natural static separation. At the same time, it ensures that the trace amount of extractant entrained in the raffinate acid can be effectively removed, avoiding the adverse effects on the subsequent production process, improving the product quality and yield.
[0034] Specifically, the centrifugal extractor can be a conventional centrifugal extractor, that is, two liquids with different densities can be separated by centrifugation, such as a centrifugal extraction separator.
[0035] The raffinate acid storage tank, the refined phosphoric acid tank, and the extractant tank are common storage tanks, which can meet the requirements of storing phosphoric acid and extractant.
[0036] The extractant tank receives the separated extractant, which can be used for extraction treatment of the phosphoric acid-containing feed liquid; the refined phosphoric acid tank is used to receive the separated raffinate acid.
[0037] In one or more embodiments, the centrifugal speed of the centrifugal extractor 1 is 2000-10000r / min.
[0038] In the above technical solution, the centrifugal speed of the centrifugal extractor is 2000-10000r / min, which ensures that the mixed liquid is subjected to sufficient centrifugal force during the centrifugal extraction process, thereby realizing the high-efficiency separation between the extractant and the raffinate acid.
[0039] In one or more embodiments, the centrifugal extractor 1 is provided with a stirrer 101, and the stirrer 101 is a variable frequency stirrer 101.
[0040] In the above technical solution, the stirrer is arranged in the centrifugal extractor, which can ensure that the mixed liquid is uniformly mixed during the centrifugation process, which is conducive to further improving the separation effect. In addition, the variable frequency stirrer can adjust the stirring speed according to the actual needs, thereby optimizing the separation process and improving the separation efficiency. Moreover, the use of the variable frequency stirrer enables the device to adapt to different working conditions and mixed liquid characteristics, thereby improving the flexibility and applicability of the device.
[0041] Therefore, the arrangement of the stirrer can effectively prevent the mixed liquid from stratifying or precipitating during the centrifugation process, ensuring that the mixed liquid always remains in a uniform state; by adjusting the stirring speed of the variable frequency stirrer, the separation process can be optimized and the separation efficiency can be improved, thereby meeting the separation requirements under different working conditions.
[0042] Specifically, the control of the frequency conversion can be adjusted and set according to actual needs.
[0043] In one or more embodiments, as Figure 2 shown, the centrifugal extractor 1 comprises a mixed liquid inlet 102, a light phase collection chamber 103, a heavy phase collection chamber 104, and a rotating drum 105, wherein the bottom of the rotating drum 105 is provided with the mixed liquid inlet 102, the rotating drum 105 is provided with a heavy phase weir plate and a light phase weir plate, the light phase collection chamber 103 is arranged on the top of the light phase weir plate, and the heavy phase collection chamber 104 is arranged on the top of the heavy phase weir plate.
[0044] Therefore, in the above technical solution, by arranging the mixed liquid inlet, the light phase collection chamber, the heavy phase collection chamber, and the rotating drum, as well as the heavy phase weir plate and the light phase weir plate in the rotating drum, it is ensured that the mixed liquid can be separated according to the physical property differences (such as density, viscosity, etc.) when subjected to strong centrifugal force in the rotating drum, and the light phase and the heavy phase can enter the light phase collection chamber and the heavy phase collection chamber respectively, thereby realizing efficient separation.
[0045] In one or more embodiments, the centrifugal extractor further comprises a light phase outlet 106 and a heavy phase outlet 107, wherein the light phase outlet 106 is connected to the light phase collection chamber 103, and the heavy phase outlet 107 is connected to the heavy phase collection chamber 104.
[0046] In the above technical solution, by arranging the light phase outlet and the heavy phase outlet, the light phase (such as the extractant) and the heavy phase (such as the raffinate acid) obtained after centrifugal extraction can be collected into different collection chambers, thereby facilitating subsequent utilization and processing.
[0047] Moreover, the separate collection of the light phase and the heavy phase helps to reduce mutual pollution and improve separation precision.
[0048] In one or more embodiments, a stirrer 101 is arranged in the cavity formed by the rotating drum 105.
[0049] In the above technical solution, it can be ensured that the mixed liquid is fully stirred and mixed during the centrifugal extraction process, thereby enhancing the separation effect and enabling the raffinate acid and the extractant to be more thoroughly separated. The operation of the stirrer 101 can promote the uniform distribution of the mixed liquid in the rotating drum, avoid the problem of uneven separation caused by excessively high or low local concentration, and further improve the separation efficiency and purity.
[0050] In one or more embodiments, as Figure 3 shown, the feed inlet of the raffinate acid storage tank 2 is connected to a back-extraction phase separation tank 5, the back-extraction phase separation tank 5 is connected to a back-extraction mixing tank 6, the back-extraction mixing tank 6 is connected to an extraction phase separation tank 7, and the extraction phase separation tank 7 is connected to an extraction mixing tank 8.
[0051] In the above technical solution, the feed inlet of the raffinate acid storage tank is connected to the stripping phase separation tank, the stripping mixing tank, the extraction phase separation tank, and the extraction mixing tank in sequence, forming a continuous chemical processing flow. This helps to improve production efficiency and reduce operation steps and time cost.
[0052] Specifically, the extraction agent and the phosphoric acid-containing feed liquid are added to the extraction mixing tank for mixed extraction. After the extraction is completed, the mixed extraction feed liquid is introduced into the extraction phase separation tank for phase separation to obtain an oil layer and a water layer. The oil layer is introduced into the stripping mixing tank, and the water-containing stripping agent is added for thorough mixing to obtain a mixed stripping feed liquid. The mixed stripping feed liquid is introduced into the stripping phase separation tank for phase separation to obtain an extraction agent layer and a water layer, and the water layer is collected and introduced into the raffinate acid storage tank, forming a mixed liquid containing raffinate acid and extraction agent in the raffinate acid storage tank. The mixed liquid often contains a small amount of extraction agent, which appears as a small amount of oil beads on the surface of the acid.
[0053] In one or more embodiments, the feed inlets of the extraction mixing tank 8 are connected to the crude phosphoric acid tank 9 and the extraction agent tank 4, respectively.
[0054] In the above technical solution, the feed inlets of the extraction mixing tank 8 are connected to the crude phosphoric acid tank 9 and the extraction agent tank 4, respectively, which can conveniently introduce the phosphoric acid-containing feed liquid and the extraction agent into the extraction mixing tank 8 for mixing and preparation.
[0055] Specifically, as shown in Figure 4 The working process of a centrifugal separation device is as follows:
[0056] The mixed liquid to be separated is introduced into the drum of the centrifugal extractor through the mixed liquid inlet. The drum rotates at high speed (such as 2000-10000 r / min) under the drive of the motor, generating a strong centrifugal force. In the drum, the mixed liquid is separated into a light phase and a heavy phase under the action of the centrifugal force.
[0057] The light phase (such as the extraction agent, which has a smaller density) is pushed to the upper part of the drum under the action of the centrifugal force, and flows into the light phase collection chamber along the light phase weir plate. Then, the light phase is guided out through the light phase outlet, and may enter the subsequent collection or processing equipment, such as the extraction agent tank.
[0058] The heavy phase (such as the raffinate acid, which has a larger density) is pushed to the lower part of the drum under the action of the centrifugal force, and flows into the heavy phase collection chamber along the heavy phase weir plate. Then, the heavy phase is guided out through the heavy phase outlet and enters the refined phosphoric acid tank, which may be recycled.
[0059] In the drum, the stirrer works to ensure that the mixed liquid is uniformly mixed during the centrifugal separation process, thereby improving the separation efficiency.
[0060] In addition, the application provides a centrifugal separation system, mainly comprising the above-mentioned centrifugal separation, and further comprising corresponding pumps, valves, pipes and the like, which are used for connecting and conveying materials.
[0061] The above is a specific description of the preferred embodiments of the application, but the application creation is not limited to the embodiments described, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the application.
Claims
1. A centrifugal separation device, characterized in that, The centrifugal extractor (1) is connected to a raffinate acid tank (2) at its feed inlet; The acid outlet of the centrifugal extractor (1) is connected to a refined phosphoric acid tank (3); The oil outlet of the centrifugal extractor (1) is connected to an extractant tank (4); The centrifugal extractor (1) comprises a mixed liquid inlet (102), a light phase collection chamber (103), a heavy phase collection chamber (104), and a rotating drum (105) provided with the mixed liquid inlet (102 at its bottom, a heavy phase weir plate (109) and a light phase weir plate (108) arranged in the rotating drum (105), the light phase collection chamber (103) arranged at the top of the light phase weir plate (108), and the heavy phase collection chamber (104) arranged at the top of the heavy phase weir plate (109).
2. The centrifugal separation device of claim 1, wherein, The centrifugal speed of the centrifugal extractor (1) is 2000-10000 r / min.
3. The centrifugal separation device of claim 1, wherein, The centrifugal extractor (1) is provided with a stirrer (101).
4. The centrifugal separation device of claim 3, wherein, The stirrer (101) is a variable frequency stirrer (101).
5. The centrifugal separation device of claim 1, wherein, Further comprising a light phase outlet (106) and a heavy phase outlet (107), the light phase outlet (106) being connected to the light phase collection chamber (103), and the heavy phase outlet (107) being connected to the heavy phase collection chamber (104).
6. The centrifugal separation device of claim 1, wherein, The cavity formed by the rotating drum (105) is provided with a stirrer (101).
7. The centrifugal separation device of claim 1, wherein, The feed inlet of the raffinate acid tank (2) is connected to a stripping separation tank (5), the stripping separation tank (5) is connected to a stripping mixing tank (6), the stripping mixing tank (6) is connected to an extraction separation tank (7), and the extraction separation tank (7) is connected to an extraction mixing tank (8).
8. The centrifugal separation device of claim 7, wherein, The feed inlet of the extraction mixing tank (8) is connected to a crude phosphoric acid tank (9) and an extractant tank (4) respectively.
9. A centrifugal separation system characterized by, The centrifugal separation device of any one of claims 1-8.