Countercurrent extraction adjusting device and countercurrent extraction adjusting method

Abstract

The invention discloses a counter-current extraction adjusting device and a counter-current extraction adjusting method.The counter-current extraction adjusting device comprises extraction components, a first three-way pipeline and a second three-way pipeline, each extraction component is provided with an independent inlet and an independent outlet of a water phase and an extraction phase, and single-stage extraction can be achieved; the first three-way pipeline and the second three-way pipeline connect a plurality of extraction components, multi-stage counter-current extraction can be realized, and meanwhile, each extraction component is provided with an independent inlet and an independent outlet of a water phase and an extraction phase, so that the stage number can be flexibly adjusted; in the counter-current extraction adjusting method, each component can be changed into any stage number from a single stage number to an n stage number from an original fixed stage number, and extract liquor, strip liquor, washing liquor and the like can be added into or discharged out of the corresponding extraction components according to the stage number requirement of each stage of process. By controlling different pipe orifices of the first three-way pipeline and the second three-way pipeline, the reverse flow of a water phase or an extraction phase can be realized, and meanwhile, single-stage isolation maintenance can be carried out.

Description

Technical Field

[0001] This application relates to the field of chemical separation technology, and in particular to a countercurrent extraction regulating device and a countercurrent extraction regulating method. Background Technology

[0002] Extraction is a unit operation that separates a mixture by utilizing the different solubilities of its components in a solvent. Extraction is not only a method used in organic chemistry laboratories to purify and refine compounds, but it is also a common method in hydrometallurgy for extracting and enriching target metals. Through extraction, the desired substance can be extracted from a liquid mixture; however, single-stage extraction can achieve relatively low extraction rates for a given component.

[0003] Multistage countercurrent extraction involves adding the feed and extractant from opposite ends of a cascade (or plate column), allowing them to flow counter-currently between stages. The resulting raffinate and extract each exit from their respective ends. Since both the feed and extractant undergo multiple extractions, the extraction rate is high, and the concentration of the extracted component in the extract is also high. This is a commonly used process in industrial extraction.

[0004] Most existing industrial extraction equipment is multi-stage countercurrent extraction, containing extraction components with different functions such as extraction, washing, back-extraction, and regeneration. Each component usually consists of several extraction stages. The number of extraction stages for each different function is determined by technicians during equipment manufacturing, which ensures process stability. However, it also has the following drawbacks: when the material concentration changes, operators can only improve extraction efficiency and reduce aqueous phase runoff by adjusting the flow rates of various liquids. However, adjusting the flow rate often disrupts the balance between the organic and aqueous phases, causing runoff. Furthermore, the pre-set extraction equipment is difficult to handle raw material liquids with varying compositions in production, thus having certain limitations. Summary of the Invention

[0005] To solve at least one of the above-mentioned technical problems, this application provides a countercurrent extraction regulating device and a countercurrent extraction regulating method, and the technical solution adopted is as follows.

[0006] The countercurrent extraction regulating device provided in this application includes an extraction component, a first three-way pipe and a second three-way pipe. The extraction component includes a mixing chamber and a clarification chamber. The extraction component is provided with an overflow baffle. The overflow baffle separates the mixing chamber and the clarification chamber. The mixing chamber includes a mixing chamber aqueous phase inlet, a mixing chamber extraction phase inlet, an aqueous phase inlet and an extraction phase inlet. The clarification chamber includes a clarification chamber aqueous phase inlet and a clarification chamber extraction phase inlet.

[0007] For the first three-way pipe, two adjacent extraction components are connected through the first three-way pipe. Two ports of the first three-way pipe are connected to the aqueous phase port of the clarification chamber and the aqueous phase port of the adjacent mixing chamber. The other port of the first three-way pipe is the first liquid outlet.

[0008] For the second three-way pipe, two adjacent extraction components are connected through the second three-way pipe. Two ports of the second three-way pipe are connected to the extraction phase port of the clarification chamber and the extraction phase port of the adjacent mixing chamber. The other port of the second three-way pipe is the second liquid outlet.

[0009] When multiple extraction components are connected through the first tee pipe and the second tee pipe and adjacent extraction components are connected, they form a multi-level system. When only a single extraction component exists or adjacent extraction components in the multi-level system are not connected, the extraction component is a single-level system.

[0010] In some embodiments of this application, valves are provided at the aqueous phase inlet of the mixing chamber, the extractive phase inlet of the mixing chamber, the aqueous phase inlet, the extractive phase inlet, the aqueous phase inlet of the clarification chamber, and the extractive phase inlet of the clarification chamber, and valves are provided at the inlets of the first tee pipe and the second tee pipe.

[0011] In some embodiments of this application, the valve is configured as a ball valve.

[0012] In some embodiments of this application, the mixing chamber includes a shallow chamber and a stirring chamber, the shallow chamber being located at the lower part of the mixing chamber, the mixing chamber including a perforated plate separating the shallow chamber and the stirring chamber, and the aqueous phase and the extract phase being introduced into the stirring chamber from the shallow chamber.

[0013] In some embodiments of this application, the outlet of the extraction phase inlet and the outlet of the aqueous phase inlet are located inside the shallow chamber.

[0014] In some embodiments of this application, the overflow baffle is slidably engaged with the vertical guide rail.

[0015] In some embodiments of this application, the clarification chamber includes a first partition plate perpendicular to the bottom surface of the extraction component. The first partition plate and the clarification chamber surround a first isolation cavity, and the extraction phase port of the clarification chamber is located within the first isolation cavity.

[0016] In some embodiments of this application, the clarification chamber includes a second partition, which is perpendicular to the bottom surface of the extraction component. The second partition and the clarification chamber surround a second isolation cavity. The aqueous phase inlet of the clarification chamber is located inside the second isolation cavity. An aqueous phase delivery pipe is provided on the outer wall of the second partition. The aqueous phase enters the aqueous phase delivery pipe from the lower end of the aqueous phase delivery pipe and then overflows from the upper end of the aqueous phase delivery pipe into the second isolation cavity.

[0017] In some embodiments of this application, the second partition is provided with a height-adjustable sliding window, through which the aqueous phase enters the second isolation chamber from the aqueous phase pipeline.

[0018] A countercurrent extraction control method, using the countercurrent extraction control device described above, includes the following steps:

[0019] For the single-level system:

[0020] Q1: The aqueous phase is introduced into the mixing chamber through the aqueous phase inlet, and the extractable phase is introduced into the mixing chamber through the extractable phase inlet. The mixing chamber is then activated for mixing.

[0021] Q2: Adjust the height of the overflow baffle to allow the mixed phase to overflow into the clarification chamber for phase separation;

[0022] Q3: The aqueous phase is output from the aqueous phase outlet of the clarification chamber, and the extractable phase is output from the extractable phase outlet of the clarification chamber;

[0023] For the aforementioned multi-level system:

[0024] S1: Using the Nth stage extraction component, adjust the height of the overflow baffles at each stage, and input the aqueous phase from the Nth stage aqueous phase inlet into the Nth stage mixing chamber, and input the extractable phase from the 1st stage extractable phase inlet into the 1st stage mixing chamber;

[0025] S2: Allow the aqueous phase and the extract phase to overflow into the clarification chamber for phase separation;

[0026] S3: The first three-way pipe connects the aqueous phase port of the clarification chamber and the aqueous phase port of the adjacent mixing chamber; the second three-way pipe connects the extractive phase port of the clarification chamber and the extractive phase port of the adjacent mixing chamber.

[0027] S4: When it is necessary to detect the product of intermediate stage m, output the aqueous phase from the aqueous phase port of the clarification chamber of stage m, or output the extractive phase from the extractive phase port of the clarification chamber of stage m; when it is necessary to adjust the extractive phase of intermediate stage m, input the extractive phase from the extractive phase inlet of stage m; when it is necessary to adjust the aqueous phase of intermediate stage m, input the aqueous phase from the aqueous phase inlet of stage m; if no detection or adjustment is required, repeat S2 and S3.

[0028] S5: Output the aqueous phase from the extraction component described in stage 1, and output the extract phase from the extraction component described in stage N.

[0029] This application has at least the following beneficial effects: The countercurrent extraction regulating device includes an extraction component, a first three-way pipe, and a second three-way pipe. Each extraction component has independent inlets and outlets for the aqueous phase and the extract phase, enabling single-stage extraction. The first three-way pipe and the second three-way pipe connect multiple extraction components, enabling multi-stage countercurrent extraction. At the same time, each extraction component has independent inlets and outlets for the aqueous phase and the extract phase, allowing for flexible adjustment of the number of stages. In the countercurrent extraction regulating method, each component can be changed from a fixed number of stages to any number of stages from single-stage to n-stage. Extraction liquid, back-extraction liquid, washing liquid, etc., will be added or discharged into the corresponding extraction component according to the stage requirements of each process segment. Controlling the different ports of the first three-way pipe and the second three-way pipe can achieve countercurrent of the aqueous phase or the extract phase, while also enabling single-stage isolation maintenance.

[0030] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0031] The present application will be further illustrated below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments illustrated in the following drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application.

[0032] Figure 1 This is a diagram of adjacent extracted components;

[0033] Figure 2 This is a top view of a single-stage extraction process;

[0034] Figure 3 This is a single-stage extraction component diagram;

[0035] Figure 4 This is a multi-level extraction diagram.

[0036] Figure labels: 100, extraction component; 1, first-level extraction component; 10, tenth-level extraction component;

[0037] 110, Mixing chamber; 111, Overflow baffle; 112, Aqueous phase inlet of mixing chamber; 113, Extraction phase inlet of mixing chamber; 114, Aqueous phase inlet; 115, Extraction phase inlet; 116, Shallow chamber; 1161, Perforated plate; 117, Stirring chamber;

[0038] 120, Clarification chamber; 121, Aqueous phase port of clarification chamber; 122, Extraction phase port of clarification chamber; 123, First isolation chamber; 1231, First partition; 124, Second isolation chamber; 1241, Second partition; 1242, Aqueous phase transport pipe; 1243, Sliding window;

[0039] 130, First tee pipe; 131, First tee pipe, aqueous phase pipe of mixing chamber; 132, First tee pipe, aqueous phase pipe of clarification chamber; 133, First outlet;

[0040] 140, Second three-way pipe; 141, Second three-way pipe, mixing chamber extraction phase pipe; 142, Second three-way pipe, clarification chamber extraction phase pipe; 143, Second outlet. Detailed Implementation

[0041] The following is combined Figures 1 to 4 The embodiments of this application are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0042] In the description of this application, it should be understood that the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0044] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Most existing industrial extraction equipment is multi-stage countercurrent extraction, containing extraction components with different functions such as extraction, washing, back-extraction, and regeneration. Each component usually consists of several extraction stages. The number of extraction stages for each different function is determined by technicians during equipment manufacturing, which ensures process stability. However, it also has the following drawbacks: when the material concentration changes, operators can only improve extraction efficiency and reduce aqueous phase runoff by adjusting the flow rates of various liquids. However, adjusting the flow rate often disrupts the balance between the organic and aqueous phases, causing runoff. Furthermore, the pre-set extraction equipment is difficult to handle raw material liquids with varying compositions in production, thus having certain limitations.

[0047] To address the issue of improving extraction efficiency by individually adjusting various liquid flow rates when material concentration changes, and to solve the problem of aqueous phase runoff, this application proposes a countercurrent extraction adjustment device and a countercurrent extraction adjustment method.

[0048] The following is for reference. Figures 1 to 4 The diagram illustrates the scheme of this application.

[0049] The countercurrent extraction regulating device proposed in this application includes an extraction component 100, which includes a mixing chamber 110 and a clarification chamber 120. The extraction component 100 is provided with an overflow baffle 111, which separates the mixing chamber 110 and the clarification chamber 120. The mixing chamber 110 includes a mixing chamber aqueous phase inlet 112, a mixing chamber extraction phase inlet 113, an aqueous phase inlet 114, and an extraction phase inlet 115. The clarification chamber 120 includes a clarification chamber aqueous phase inlet 121 and a clarification chamber extraction phase inlet 122.

[0050] The first three-way pipe connects two adjacent extraction components 100 through the first three-way pipe 130. The two ports of the first three-way pipe 130 are connected to the aqueous phase port 121 of the clarification chamber and the aqueous phase port 112 of the adjacent mixing chamber. The other port of the first three-way pipe 130 is the first liquid outlet 133.

[0051] The second three-way pipe connects two adjacent extraction components 100 through the second three-way pipe 140. The two ports of the second three-way pipe 140 are connected to the extraction phase port 122 of the clarification chamber and the extraction phase port 113 of the adjacent mixing chamber. The other port of the second three-way pipe 140 is the second liquid outlet 143.

[0052] When multiple extraction components 100 are connected through a first three-way pipe 130 and a second three-way pipe 140 and adjacent extraction components 100 are connected, they form a multi-level system. When there is only a single extraction component 100 or adjacent extraction components 100 are not connected in the multi-level system, the extraction component 100 is a single-level system.

[0053] For example, the countercurrent extraction regulating device proposed in this application includes an extraction component 100, such as... Figure 1 As shown, taking two adjacent extraction components 100 as an example, each extraction component 100 includes a mixing chamber 110 and a clarification chamber 120. An overflow baffle 111 separates the mixing chamber 110 and the clarification chamber 120. The mixed liquids in the mixing chamber 110 form a mixed phase, which overflows from the mixing chamber 110 and flows into the clarification chamber 120 from the lower end of the overflow baffle 111. Phase separation occurs in the clarification chamber 120. Below the mixing chamber 110 is a mixing chamber aqueous phase inlet 112 for the flow of the aqueous phase, and a mixing chamber extractable phase inlet 113 for the flow of the extractable phase. The mixing chamber 110 includes an aqueous phase inlet 114 and an extractable phase inlet 115. Each extraction component 100 includes an aqueous phase inlet 114 and an extractable phase inlet 115 to adjust the liquid flow rate and composition during the extraction process, thereby improving extraction efficiency. The clarification chamber 120 includes a clarification chamber aqueous phase inlet 121 for the flow of the aqueous phase and a clarification chamber extraction phase inlet 122 for the flow of the extraction phase.

[0054] The two ports at the top of the first three-way pipe 130 connect to the aqueous phase port 121 of the clarification chamber and the aqueous phase port 112 of the adjacent mixing chamber. The pipe connecting the first three-way pipe 130 to the aqueous phase port 112 of the mixing chamber is called the first three-way pipe mixing chamber aqueous phase pipe 131, and the pipe connecting the first three-way pipe 130 to the aqueous phase port 121 of the clarification chamber is called the first three-way pipe clarification chamber aqueous phase pipe 132. After phase separation in the clarification chamber 120, the aqueous phase is at the bottom and the extractable phase is at the top. The aqueous phase in the clarification chamber 120 can flow into the first three-way pipe 130 through the aqueous phase port 121, and from the first three-way pipe 130, it enters the adjacent mixing chamber 110 through the aqueous phase port 112, realizing the flow of aqueous phase between adjacent extractable components 100. The aqueous phase flowing out of the clarification chamber 120 carries residual target components that have not been fully extracted. Mixing with the extractable phase in the adjacent mixing chamber 110 can further extract the target components and improve the recovery rate. In countercurrent extraction, the aqueous phase and the extract phase flow in opposite directions, maximizing the utilization rate of the extract phase. The first outlet 133 is used to discharge liquid, which can discharge the aqueous phase from the clarifying chamber 120 after phase separation, or the liquid flowing out of the aqueous phase outlet 112 of the connected mixing chamber.

[0055] The two ports at the top of the second three-way pipe 140 connect to the extraction phase port 122 of the clarification chamber and the extraction phase port 113 of the mixing chamber, and are used for the flow of the extractant phase. The pipe connecting the second three-way pipe 140 to the extraction phase port 113 of the mixing chamber is the second three-way pipe mixing chamber extraction phase pipe 141, and the pipe connecting the second three-way pipe 140 to the extraction phase port 122 of the clarification chamber is the second three-way pipe clarification chamber extraction phase pipe 142. After phase separation in the clarification chamber 120, the aqueous phase is at the bottom and the extractant phase is at the top. The extractant phase from the clarification chamber 120 can flow into the second three-way pipe 140 through the extraction phase port 122 of the clarification chamber, and from the second three-way pipe 140, it enters the adjacent stage mixing chamber 110 through the extraction phase port 113 of the adjacent stage mixing chamber, realizing the flow of the extractant phase between adjacent extraction components 100. The flow directions of the extractant phase and the aqueous phase are opposite. The aqueous phase and the extractant phase of the same extraction component 100 flow out in different directions, flowing into the extraction components 100 on the left and right sides of this extraction component 100 respectively. The extractable phase flows to the adjacent mixing chamber 110 to mix with the aqueous phase of a lower concentration, flowing in stages to maximize the utilization of the extractable phase, reduce the amount of extractable phase used, and lower costs. The first outlet 133 is used to discharge liquid, which can discharge the extractable phase from the clarifying chamber 120 after phase separation, or the liquid flowing out of the extractable phase outlet 113 of the connected mixing chamber.

[0056] A single extraction component forms a single-stage system, while multiple extraction components are connected via a first three-way pipe and a second three-way pipe to form a multi-stage system. Each extraction component 100 has independent inlets and outlets for the aqueous phase and the extractant phase, enabling single-stage extraction. The first three-way pipe 130 and the second three-way pipe 140 connect the multiple extraction components 100, enabling multi-stage countercurrent extraction regulation. Intermediate products can be extracted by allowing liquid to flow out through the first liquid outlet 133 and the second liquid outlet 143. Simultaneously, each extraction component 100 has independent inlets and outlets for the aqueous phase and the extractant phase, allowing for flexible adjustment of the number of stages. Each component can be changed from a fixed number of stages to any number of stages from single-stage to n-stage. Extraction liquid, back-extraction liquid, washing liquid, etc., are added to or discharged into the corresponding extraction component 100 according to the stage requirements of each process segment. Controlling the different outlets of the first three-way pipe 130 and the second three-way pipe 140 allows for countercurrent of the aqueous or extractant phases, while also enabling single-stage isolation maintenance.

[0057] Furthermore, the volume of the clarification chamber 120 is 4 to 6 times that of the mixing chamber 110, providing sufficient phase separation time to allow the aqueous phase and the extract phase to fully separate. The small volume of the mixing chamber 110 ensures sufficient stirring, while the large volume of the clarification chamber 120 can reduce the flow rate and improve the separation purity.

[0058] In some embodiments, valves are provided at the mixing chamber aqueous phase inlet 112, the mixing chamber extraction phase inlet 113, the aqueous phase inlet 114, the extraction phase inlet 115, the clarification chamber aqueous phase inlet 121, and the clarification chamber extraction phase inlet 122. Valves are also provided at the inlets of the first three-way pipe 130 and the second three-way pipe 140. The valves control the interstage transfer between the aqueous and extraction phases, independently adjusting the inflow and outflow of each extraction component 100. When a stage extraction component 100 malfunctions, it can be shut down to achieve single-stage isolation, facilitating maintenance. Valves at the inlets of the first three-way pipe 130 and the second three-way pipe 140 control the flow rate of the aqueous and extraction phases between adjacent extraction components 100. Valves at the first outlet 133 and the second outlet 143 allow for the extraction of intermediate products. Valves at each inlet and outlet enable flow control and fault tolerance.

[0059] Furthermore, the valve is configured as a ball valve. The ball valve can be fully opened or fully closed by rotating 90°, offering a fast response. The valve core opening is linearly related to the flow rate, facilitating precise adjustment of the outflow of the extractant phase or aqueous phase. When dynamically adjusting interstage flow rates, flow control accuracy is achieved by fine-tuning the valve core opening.

[0060] In some embodiments, the mixing chamber 110 includes a shallow chamber 116 and a stirring chamber 117. The shallow chamber 116 is located at the lower part of the mixing chamber 110. The mixing chamber 110 includes a perforated plate 1161, which separates the shallow chamber 116 and the stirring chamber 117. The aqueous phase and the extract phase are introduced into the stirring chamber 117 from the shallow chamber 116. The stirring chamber 117 is equipped with a stirring paddle. When stirring generates eddies, a pressure difference is formed between the stirring chamber 117 and the shallow chamber 116. The liquid in the shallow chamber 116 flows to the stirring chamber 117 through the holes of the perforated plate 1161. When the aqueous phase inlet 112 of the mixing chamber is connected to the aqueous phase inlet 121 of the adjacent stage clarifier, the shallow chamber 116 draws in the aqueous phase from the aqueous phase inlet 121 of the adjacent stage clarifier. The aqueous phase flows into the shallow chamber 116 through the first three-way pipe 130 and is then naturally drawn into the stirring chamber 117 through the holes of the perforated plate 1161. When the extraction phase port 113 of the mixing chamber is connected to the extraction phase port 122 of the adjacent clarification chamber, the shallow chamber 116 draws in the extraction phase from the extraction phase port 122 of the adjacent clarification chamber 120. The extraction phase flows into the shallow chamber 116 through the second three-way pipe 140, and is then naturally drawn into the stirring chamber 117 through the holes of the perforated plate 1161. This application uses the perforated plate 1161 to separate the shallow chamber 116 and the stirring chamber 117, improving the utilization efficiency of the aqueous phase and the extraction phase, increasing mixing efficiency, and reducing energy consumption.

[0061] Furthermore, the holes in the perforated plate 1161 are designed as round holes to reduce fluid resistance.

[0062] In some embodiments, the extract phase inlet 115 and the aqueous phase inlet 114 are located inside the shallow chamber 116. When liquid is introduced into the extract phase inlet 115 and the aqueous phase inlet 114, it first flows into the shallow chamber 116 for preliminary mixing. The mixed liquid rises slowly and enters the stirring chamber 117 through the perforated plate 1161, eliminating the impact vortex during liquid introduction, buffering flow fluctuations, and avoiding direct impact on the stirring impeller of the stirring chamber 117.

[0063] In some embodiments, the overflow baffle is slidably engaged with a vertical guide rail. The overflow baffle 111, slidably engaged with the vertical guide rail, adjusts its height vertically to allow the mixed phase to overflow from the mixing chamber 110 and flow into the clarification chamber 120 from the lower end of the overflow baffle 111. The aqueous phase and the extractive phase mix in the mixing chamber 110 to form a mixed phase, which overflows from the lower end of the overflow baffle 111 and flows into the clarification chamber 120. The overflow baffle 111 slides vertically, and its height controls the overflow velocity, reducing the impact of the mixed phase flowing out of the mixing chamber 110 on the liquid in the clarification chamber 120. Simultaneously, the height of the overflow baffle 111 and the ease of phase separation can be reasonably matched to facilitate stratification in the clarification chamber 120, further reducing the entrainment rate.

[0064] In some embodiments, combined with Figure 1 and Figure 3As shown, the clarification chamber 120 includes a first partition 1231, which is perpendicular to the bottom surface of the extraction component 100. The first partition 1231 and the clarification chamber 120 enclose a first isolation cavity 123, and the extraction phase port 122 of the clarification chamber is located within the first isolation cavity 123. After phase separation in the clarification chamber 120, the upper layer is the extractable phase and the lower layer is the aqueous phase. The extractable phase can overflow from the upper end of the first partition 1231 into the first isolation cavity 123, improving the flow efficiency of the extractable phase during the countercurrent extraction process. The first partition 1231 is used to separate the extractable phase and the liquid in the clarification chamber 120, preventing re-mixing after phase separation, reducing the entrainment rate, and improving the utilization rate of the extractable phase. After overflowing into the first isolation cavity 123, the extractable phase flows into the second three-way pipe 140 through the opening of the valve on the pipe connecting the extraction phase port 122 of the clarification chamber. Simultaneously, the flow direction of the extractable phase is adjusted by the opening and closing of other valves on the second three-way pipe 140.

[0065] In some embodiments, combined with Figure 1 and Figure 3 As shown, the clarification chamber 120 includes a second partition 1241, which is perpendicular to the bottom surface of the extraction component 100. The second partition 1241 and the clarification chamber 120 enclose a second isolation cavity 124. The aqueous phase inlet 121 of the clarification chamber is located inside the second isolation cavity 124. An aqueous phase delivery pipe 1242 is provided on the outer wall of the second partition 1241, and the aqueous phase enters the aqueous phase delivery pipe 1242 from its lower end. After phase separation in the clarification chamber 120, the upper layer is the extraction phase and the lower layer is the aqueous phase. The aqueous phase flows naturally into the second isolation cavity 124 through the aqueous phase delivery pipe 1242. The second partition 1241 is used to separate the aqueous phase and the liquid in the clarification chamber 120, preventing re-mixing after separation, reducing entrainment rate, and improving aqueous phase utilization. After the aqueous phase enters the second isolation chamber 124 from the aqueous phase delivery pipe 1242, it flows into the first three-way pipe 130 through the valve of the pipe connecting to the aqueous phase port 121 of the clarification chamber. At the same time, the flow direction of the aqueous phase is adjusted by the opening and closing of other valves on the first three-way pipe 130. The first isolation chamber 123 and the second isolation chamber 124 are also provided to facilitate the cleaning of the extraction component 100.

[0066] In some embodiments, combined with Figure 1 and Figure 3As shown, the second partition 1241 is equipped with an adjustable-height sliding window 1243. The aqueous phase enters the second isolation chamber 124 from the aqueous phase conveying pipe 1242 through the sliding window 1243. By adjusting the height of the sliding window 1243, the height of the phase separation surface can be controlled, thereby controlling the flow rate of the aqueous phase into the second isolation chamber 124 and optimizing the phase separation efficiency. The sliding window 1243 can be manually adjusted at any time to adapt to changes during the extraction process. The height of the sliding window 1243 can be lowered to accelerate the flow of the aqueous phase into the second isolation chamber 124 for transfer, or the height can be raised to prolong the phase separation time while ensuring stable liquid levels in both the second and first isolation chambers 124 and 123. The height can be adjusted synchronously with the overflow baffle 111 to maintain material balance in the extraction component 100.

[0067] This application also provides a countercurrent extraction control method, using the above-mentioned countercurrent extraction control device, comprising the following steps:

[0068] For a single-level system, combined Figure 2 and Figure 3 As shown:

[0069] Q1: Input the aqueous phase into the mixing chamber 110 through the aqueous phase inlet 114, and input the extract phase into the mixing chamber 110 through the extract phase inlet 115. Start the mixing chamber 110 for mixing.

[0070] Q2: Adjust the height of the overflow baffle 111 to allow the mixed phase to overflow into the clarification chamber 120 for phase separation;

[0071] Q3: The aqueous phase is output from the aqueous phase outlet 121 of the clarification chamber, and the extractable phase is output from the extractable phase outlet 122 of the clarification chamber;

[0072] For multi-level systems:

[0073] S1: Select the N-stage countercurrent extraction regulating device, use the N-stage extraction component 100, adjust the height of each stage overflow baffle 111, input the aqueous phase from the N-stage aqueous phase inlet 114 into the N-stage mixing chamber 110, input the extract phase from the 1-stage extract phase inlet 115 into the 1-stage mixing chamber 110, and start the mixing chamber 110 for mixing.

[0074] S2: Allow the aqueous phase and extract phase to overflow into the clarification chamber 120 for phase separation;

[0075] S3: The first three-way pipe 130 connects the water phase inlet 121 of the clarification chamber and the water phase inlet 112 of the adjacent mixing chamber. The water phase flows from the water phase inlet 121 of the clarification chamber into the water phase inlet 112 of the adjacent mixing chamber. The second three-way pipe 140 connects the extraction phase inlet 122 of the clarification chamber and the extraction phase inlet 113 of the adjacent mixing chamber. The extraction phase flows from the extraction phase inlet 122 of the clarification chamber into the extraction phase inlet 113 of the adjacent mixing chamber. The water phase and the extraction phase are mixed in the mixing chamber 110.

[0076] S4: When it is necessary to detect the product of the m-th intermediate stage, the aqueous phase of the m-th stage is output from the aqueous phase port 121 of the clarification chamber of the m-th stage through the first three-way pipe 130, or the extractive phase of the m-th stage is output from the extractive phase port 122 of the clarification chamber through the second three-way pipe 140; when it is necessary to adjust the extractive phase of the m-th intermediate stage, the extractive phase is input from the extractive phase inlet 115 of the m-th stage; when it is necessary to adjust the aqueous phase of the m-th intermediate stage, the aqueous phase is input from the aqueous phase inlet 114 of the m-th stage; if no detection or adjustment is required, repeat S2 and S3.

[0077] S5: Output the aqueous phase from the first-stage extraction component 100, and output the extract phase from the Nth-stage extraction component 100.

[0078] Specifically, for multi-level systems, taking a 10-level system as an example, combined with... Figure 4 As shown:

[0079] S1: Select the 10-stage countercurrent extraction regulating device, use the 10-stage extraction component 100, adjust the height of the overflow baffles 111 at each stage, input the aqueous phase into the 10-stage mixing chamber 110 from the 10th-stage aqueous phase inlet 114, input the extract phase into the 1st-stage mixing chamber 110 from the 1st-stage extract phase inlet 115, and start the mixing chamber 110 for mixing;

[0080] S2: Adjust the height of each sliding window 1243 as needed to allow the aqueous phase and extractive phase to overflow into the clarification chamber 120 for phase separation. Allow the aqueous phase to flow from the aqueous phase transport pipe 1242 into the second isolation chamber 124 through the sliding window 1243, and allow the extractive phase to overflow from the upper end of the first partition 1231 into the first isolation chamber 123.

[0081] S3: The first three-way pipe 130 connects the water phase port 121 of the clarification chamber and the water phase port 112 of the adjacent mixing chamber. The valves of the water phase pipe 131 of the first three-way pipe and the water phase pipe 132 of the first three-way pipe in the mixing chamber are opened, and the water phase flows from the water phase port 121 of the clarification chamber into the water phase port 112 of the adjacent mixing chamber. The valves of the extraction phase pipe 141 of the second three-way pipe in the mixing chamber and the extraction phase pipe 142 of the second three-way pipe in the clarification chamber are opened, and the second three-way pipe 140 connects the extraction phase port 122 of the clarification chamber and the extraction phase port 113 of the adjacent mixing chamber. The extraction phase flows from the extraction phase port 122 of the clarification chamber into the extraction phase port 113 of the adjacent mixing chamber. The water phase and the extraction phase are mixed in the mixing chamber 110.

[0082] S4: When it is necessary to detect the product of the m-th intermediate stage, the aqueous phase of the m-th stage is output from the aqueous phase port 121 of the clarification chamber of the m-th stage through the first outlet port 133, or the extractive phase of the m-th stage is output from the extractive phase port 122 of the clarification chamber through the second outlet port 143; when it is necessary to adjust the extractive phase of the m-th intermediate stage, the extractive phase is input from the extractive phase inlet port 115 of the m-th stage; when it is necessary to adjust the aqueous phase of the m-th intermediate stage, the aqueous phase is input from the aqueous phase inlet port 114 of the m-th stage; if no detection or adjustment is required, repeat S2 and S3.

[0083] S5: Output the aqueous phase from the first-stage extraction component 100, and output the extract phase from the tenth-stage extraction component 100.

[0084] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

Claims

1. A counter-current extraction conditioning apparatus, characterized by: comprising an extraction component, the extraction component comprising a mixing chamber and a clarification chamber, the extraction component being provided with an overflow baffle, the overflow baffle separating the mixing chamber and the clarification chamber, the mixing chamber comprising a mixing chamber aqueous phase port, a mixing chamber extract phase port, an aqueous phase inlet port, an extract phase inlet port, the clarification chamber comprising a clarification chamber aqueous phase port and a clarification chamber extract phase port; a first three-way pipe, two adjacent extraction components being connected by the first three-way pipe, two pipe ports of the first three-way pipe connecting the clarification chamber aqueous phase port and the mixing chamber aqueous phase port of the adjacent stage, the other pipe port of the first three-way pipe being a first outlet port; a second three-way pipe, two adjacent extraction components being connected by the second three-way pipe, two pipe ports of the second three-way pipe connecting the clarification chamber extract phase port and the mixing chamber extract phase port of the adjacent stage, the other pipe port of the second three-way pipe being a second outlet port; wherein a plurality of the extraction components are connected by the first three-way pipe and the second three-way pipe and form a multi-stage system when adjacent extraction components are connected, the extraction component being arranged as one or the extraction component being a single-stage system when adjacent extraction components in the multi-stage system are not connected.

2. The counter-current extraction conditioning apparatus of claim 1, wherein: The mixing chamber aqueous phase port, the mixing chamber extract phase port, the aqueous phase inlet port, the extract phase inlet port, the clarification chamber aqueous phase port and the clarification chamber extract phase port are each provided with a valve, and the pipe ports of the first three-way pipe and the second three-way pipe are each provided with a valve.

3. The counter-current extraction conditioning apparatus of claim 2, wherein: The valve is arranged as a ball valve.

4. The counter-current extraction conditioning apparatus of claim 1, wherein: The mixing chamber comprises a shallow chamber and a stirring chamber, the shallow chamber being in the lower part of the mixing chamber, the mixing chamber comprising a perforated plate, the perforated plate separating the shallow chamber and the stirring chamber, the aqueous phase and the extract phase being input from the shallow chamber into the stirring chamber.

5. The counter-current extraction conditioning apparatus of claim 4, wherein: The output port of the extract phase inlet port and the output port of the aqueous phase inlet port are located inside the shallow chamber.

6. The counter-current extraction conditioning apparatus of claim 1, wherein: The overflow baffle is in sliding fit with a vertical guide rail.

7. The counter-current extraction conditioning apparatus of claim 1, wherein: The inside of the clarification chamber is provided with a first partition plate, the first partition plate being perpendicular to the bottom surface of the extraction component, a first isolated cavity being separated in the cavity of the clarification chamber by the first partition plate, the clarification chamber extract phase port being located in the first isolated cavity.

8. The counter-current extraction conditioning apparatus of claim 1, wherein: The inside of the clarification chamber is provided with a second partition plate, the second partition plate being perpendicular to the bottom surface of the extraction component, a second isolated cavity being separated in the cavity of the clarification chamber by the second partition plate, the clarification chamber aqueous phase port being located in the second isolated cavity, an outer wall of the second partition plate being provided with an aqueous phase delivery pipe, the aqueous phase entering the aqueous phase delivery pipe from the lower end of the aqueous phase delivery pipe and overflowing into the second isolated cavity from the upper end of the aqueous phase delivery pipe.

9. The counter-current extraction conditioning apparatus of claim 8, wherein: The second partition plate is provided with a sliding window of adjustable height, the aqueous phase entering the second isolated cavity from the aqueous phase delivery pipe through the sliding window.

10. A counter-current extraction conditioning method characterized by, Using the countercurrent extraction conditioning device of any one of claims 1 to 9, comprising the following steps: For the single-stage system: Q1: inputting the aqueous phase from the aqueous phase inlet port into the mixing chamber and inputting the extract phase from the extract phase inlet port into the mixing chamber, and enabling the mixing chamber to mix; Q2: Adjust the height of the overflow dam to make the mixed phase overflow into the clarification chamber to separate the phases; Q3: Output the water phase from the water phase port of the clarification chamber and output the extract phase from the extract phase port of the clarification chamber; For the multi-stage system: S1: Use N stages of the extract component to adjust the height of the overflow dam of each stage, input the water phase from the Nth stage water phase inlet into the Nth stage mixing chamber, and input the extract phase from the 1st stage extract phase inlet into the 1st stage mixing chamber; S2: Make the water phase and the extract phase overflow into the clarification chamber to separate the phases; S3: The first three-way pipe connects the water phase port of the clarification chamber and the water phase port of the adjacent stage mixing chamber, and the second three-way pipe connects the extract phase port of the clarification chamber and the extract phase port of the adjacent stage mixing chamber; S4: When the product of the mth stage of the intermediate stage needs to be detected, output the water phase from the water phase port of the mth stage clarification chamber or output the extract phase from the extract phase port of the mth stage clarification chamber; When the extract phase of the mth stage of the intermediate stage needs to be adjusted, input the extract phase from the extract phase inlet of the mth stage; when the water phase of the mth stage of the intermediate stage needs to be adjusted, input the water phase from the water phase inlet of the mth stage; If no detection or adjustment is needed, repeat S2 and S3; S5: Output the water phase from the 1st stage extract component and output the extract phase from the Nth stage extract component.

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