Clarification device

Abstract

The utility model discloses a clarifying device. The clarifying device comprises a tank body, a feeding pipe, a flow guide column and an oil guide pipe, the tank body is provided with a water phase clarifying chamber, an organic phase clarifying chamber and a flow guide chamber, at least one grid plate is arranged in each of the water phase clarifying chamber, the flow guide chamber and the organic phase clarifying chamber, the water phase clarifying chamber is provided with a water phase outlet, and the organic phase clarifying chamber is provided with an organic phase outlet; the feeding pipe is arranged at the inlet end of the flow guide chamber and comprises a vertical pipe, a bent pipe and a horizontal pipe, the upper end of the vertical pipe is connected with the top of the flow guide chamber, the lower end of the vertical pipe is connected with the horizontal pipe through the bent pipe, an outlet of the horizontal pipe faces the side wall face of the flow guide chamber, and at least one hole is formed in the pipe wall of the horizontal pipe; the flow guide column is arranged in the flow guide chamber and is provided with a flow dividing opening which is communicated with the water phase clarifying chamber; an inlet of the oil conduit is formed in the upper part of the diversion chamber; an outlet of the oil conduit is communicated with the organic phase clarifying chamber. According to the utility model, the separation efficiency and effect of an organic phase and a water phase can be improved.

Description

Technical Field

[0001] This utility model relates to the field of clarification equipment technology, and in particular to a clarification device. Background Technology

[0002] With the rise of new energy technologies, a large amount of precious metals such as Ni, Co, and Mn are used in new energy vehicle batteries, and the recycling of these precious metals has become a major concern for enterprises. The raffinate and back-extraction solution after the extraction process contain a certain amount of precious metals. A clarification tank is usually used to separate the organic phase and the aqueous phase (containing precious metals) in the raffinate and back-extraction solution.

[0003] However, existing clarification tanks have low separation efficiency for organic and aqueous phases, and the separation effect is generally poor. The aqueous phase usually still contains organic phase, which is not conducive to the recovery and utilization of precious metals. The organic phase contains most of the aqueous phase, and the subsequent recycling of the organic phase into the extraction device will affect the subsequent extraction efficiency. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a clarification device.

[0005] The solution to the technical problem of this utility model is:

[0006] This utility model provides a clarification device, comprising:

[0007] The tank is provided with an aqueous phase clarification chamber, an organic phase clarification chamber and a flow guiding chamber. Each of the aqueous phase clarification chamber, the flow guiding chamber and the organic phase clarification chamber is provided with at least one grid plate. The grid plate is arranged perpendicular to the flow direction of the fluid. The aqueous phase clarification chamber is provided with an aqueous phase outlet and the organic phase clarification chamber is provided with an organic phase outlet.

[0008] A feed pipe is provided at the inlet end of the flow guiding chamber. The feed pipe includes a vertical pipe, a bend pipe and a horizontal pipe. The upper end of the vertical pipe is connected to the top of the flow guiding chamber. The lower end of the vertical pipe is connected to the horizontal pipe through the bend pipe. The outlet of the horizontal pipe is set towards the side wall of the flow guiding chamber. The wall of the horizontal pipe is provided with at least one hole.

[0009] A flow guide column is provided in the flow guide chamber, and the flow guide column is provided with a flow divider, which is connected to the aqueous phase clarification chamber;

[0010] An oil guide pipe is provided, with its inlet located at the upper part of the flow chamber and its outlet connected to the organic phase clarification chamber.

[0011] This invention has at least the following beneficial effects: the raffinate or back-extraction liquid enters the guide chamber of the tank through the feed pipe. Because the feed pipe has vertical, curved, and horizontal sections, the fluid's potential energy is reduced under the guidance of the feed pipe, avoiding vortex disturbances and significantly improving the separation speed of the organic and aqueous phases, thus facilitating the separation of the organic phase and achieving better separation results. The mixed liquid entering the tank is separated into layers by the grid plate, with the organic phase located on top of the aqueous phase. The aqueous phase is separated to the aqueous phase clarification chamber by the guide column and flows out through the aqueous phase outlet, which is beneficial for the recovery and utilization of precious metals in the aqueous phase. The organic phase is isolated between the guide column and the feed pipe and is guided to the organic phase clarification chamber through the oil guide pipe located at the top of the guide chamber. It then flows out through the organic phase outlet for recovery. The organic phase has a low aqueous phase content and can be reused in the extraction device, reducing the impact of the aqueous phase on the subsequent extraction efficiency.

[0012] As a further improvement to the above technical solution, each of the grid plates is provided with an inclined plate at its upper end. The inclined plate is inclined upward in a first direction, which is opposite to the flow direction of the fluid passing through the grid plate.

[0013] As a further improvement to the above technical solution, the clarification device further includes:

[0014] At least one guide plate is provided to divide the flow chamber into at least two flow steps. The outlet of the upper flow step is connected to the inlet of the lower flow step. The flow direction of the fluid in the two adjacent flow steps is opposite. The feed pipe is located at the inlet of the first flow step, and the flow column is located at the outlet of the first flow step. At least one grid plate is provided in each flow step.

[0015] As a further improvement to the above technical solution, the clarification device further includes:

[0016] An overflow weir is provided at the outlet of each of the guide steps. The overflow weir is arranged vertically and has openings at both the top and bottom. The upper end of the overflow weir is higher than the outlet of the guide step.

[0017] As a further improvement to the above technical solution, a baffle is provided above the water phase outlet, one end of the baffle is connected to the inner wall of the tank, and the other end is inclined downward.

[0018] As a further improvement to the above technical solution, the clarification device further includes:

[0019] An oil removal device is located at the outlet end of the aqueous phase clarification chamber. The oil removal device includes an adsorbent and a lifting component. The lifting component is installed on the top of the tank, and the adsorbent is connected to the output end of the lifting component.

[0020] As a further improvement to the above technical solution, a baffle is provided at the outlet of the aqueous phase clarification chamber. The baffle is located below the adsorbent and above the aqueous phase outlet. When the lifting component drives the adsorbent to move downward, the baffle contacts the lower end of the adsorbent.

[0021] As a further improvement to the above technical solution, the sidewall of the tank is provided with a plurality of sight glasses, which are respectively located in the aqueous phase clarification chamber, the flow guiding chamber and the organic phase clarification chamber.

[0022] As a further improvement to the above technical solution, the oil guide pipe is movably connected to the top of the tank, and the height of the oil guide pipe relative to the bottom surface of the tank is adjustable.

[0023] As a further improvement to the above technical solution, the flow guiding chamber is provided with an installation plate, and the flow guiding column is movably connected to the installation plate to adjust the height of the flow diversion port relative to the installation plate. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the clarification device according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation of the feed pipe according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the clarification device according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the flow-guiding step according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the installation of the oil guide pipe according to an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the installation of the sight glass according to an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the aqueous clarification chamber according to an embodiment of the present invention;

[0032] Figure 8This is a schematic diagram of the flow guide column according to an embodiment of the present invention.

[0033] Reference numerals: 100, tank; 110, aqueous phase clarification chamber; 111, aqueous phase outlet; 120, guide chamber; 121, first-stage guide step; 122, second-stage guide step; 123, third-stage guide step; 124, fourth-stage guide step; 130, organic phase clarification chamber; 131, organic phase outlet; 140, grid plate; 141, inclined plate; 150, guide plate; 160, diversion channel; 200, feed pipe; 210, vertical pipe; 220, bend; 230, horizontal pipe; 240, hole; 300, guide column; 310, branch port; 320, mounting plate; 330, external thread structure; 400, oil guide pipe; 500, overflow weir; 600, sight glass; 700, oil removal device; 800, baffle; 900, partition. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, 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 utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, "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. If "first" or "second" is used in the description, it is only for the purpose of 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.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. The various technical features of this utility model can be combined interactively without contradicting each other.

[0039] This invention provides a clarification device that can improve the separation efficiency and effectiveness of the organic phase and aqueous phase in the raffinate and back-extraction solution.

[0040] Reference Figure 1 The clarification device includes a tank 100, a grid plate 140, a feed pipe 200, a guide column 300, and an oil guide pipe 400.

[0041] The tank 100 is equipped with an aqueous phase clarification chamber 110, an organic phase clarification chamber 130, and a flow guiding chamber 120. The feed pipe 200 is located at the inlet of the flow guiding chamber 120, and the mixture after the extraction process enters the flow guiding chamber 120 through the feed pipe 200.

[0042] Multiple grid plates 140 are provided. At least one grid plate 140 is provided in each of the aqueous phase clarification chamber 110, the flow guiding chamber 120, and the organic phase clarification chamber 130. Each grid plate 140 is arranged perpendicular to the liquid flow direction, and multiple grid plates 140 located in the same space are arranged along the liquid flow direction. When the mixture passes through the grid plates 140, the organic phase and the aqueous phase are forced to separate into layers by the grid plates 140, which is beneficial for subsequent separation of the organic phase and the aqueous phase.

[0043] The guide column 300 is also installed inside the guide chamber 120, see reference. Figure 8 The guide column 300 is provided with a diversion port 310, which is connected to the aqueous phase clarification chamber 110. The mixed liquid flows to the position of the guide column 300 under the guiding action of the guide chamber 120. The aqueous phase enters the interior of the guide column 300 through the diversion port 310 and enters the aqueous phase clarification chamber 110 through the guide column 300. Most of the organic phase is isolated by the guide column 300 in the space between the feed pipe 200 and the guide column 300.

[0044] Reference Figure 5 The inlet of the oil guide pipe 400 is located at the upper part of the guide chamber 120, and the outlet of the oil guide pipe 400 is connected to the organic phase clarification chamber 130. Due to gravity, the organic phase is located above the aqueous phase. The oil guide pipe 400 can guide the organic phase located in the upper layer to the organic phase clarification chamber 130, thereby realizing the separation between the organic phase and the aqueous phase.

[0045] In this embodiment, in order to further improve the separation efficiency and effect of the organic phase and the aqueous phase, reference is made to... Figure 2The feed pipe 200 includes a vertical pipe 210, a bend 220, and a horizontal pipe 230. The upper end of the vertical pipe 210 is connected to the top of the guide chamber 120, while the bend 220 is connected to the lower end of the vertical pipe 210. The outlet of the bend 220 is arranged facing the side wall of the guide chamber 120. The horizontal pipe 230 is connected to the outlet end of the bend 220. Furthermore, a number of holes 240 are provided on the pipe wall of the horizontal pipe 230.

[0046] Understandably, the raffinate or back-extraction liquid after extraction flows downward from the higher extraction device. Under the guidance of the feed pipe 200, the potential energy of the raffinate or back-extraction liquid decreases, and the mixture flows out through the outlet of the horizontal pipe 230. Since the outlet of the horizontal pipe 230 is set towards the inner wall of the guide chamber 120, the inner wall of the guide chamber 120 can buffer the mixture and reduce the flow rate of the mixture. In addition, the holes 240 set on the horizontal pipe 230 can act as a diversion function, which greatly avoids the vortex disturbance generated after the raffinate or back-extraction liquid enters the clarification device, significantly improves the separation speed of the organic phase and the aqueous phase, facilitates the separation of the organic phase, and achieves a better separation effect.

[0047] In this embodiment, the feed pipe 200 is installed at the front end of the guide chamber 120, while the guide column 300 is installed at the rear end of the guide chamber 120, and the outlet of the bend 220 faces forward. Three grid plates 140 are arranged between the feed pipe 200 and the guide column 300, running in a front-to-back direction. The oil guide pipe 400 is positioned between the two rear grid plates 140. The mixture flows into the feed pipe 200 and then flows backward. When passing through the two grid plates 140, the organic phase in the mixture is at the upper layer. The oil guide pipe 400 guides the upper organic phase of the mixture to the organic phase clarification chamber 130. The aqueous phase outlet 111 is located at the front end of the aqueous phase clarification chamber 110, and the liquid flows from back to front after entering the aqueous phase clarification chamber 110. The organic phase outlet 131 is located at the front end of the organic phase clarification chamber 130, and the liquid flows from back to front after entering the organic phase clarification chamber 130.

[0048] In this embodiment, refer to Figure 2 and Figure 7 Each grid plate 140 has an inclined plate 141 at its upper end. The inclined plate 141 is inclined upward in a first direction, which is opposite to the flow direction of the fluid passing through the grid plate 140. Specifically, in the grid plate 140 between the feed pipe 200 and the guide column 300, the inclined plate 141 is inclined upward towards the side of the feed pipe 200, that is, inclined forward and upward; in the grid plate 140 of the aqueous phase clarification chamber 110, the inclined plate 141 is inclined backward and upward.

[0049] It is understandable that by setting the inclined plate 141 to form an angle between the inclined plate 141 and the grid plate 140, the thickness of the organic phase above the mixture increases within the angle. When the mixture overflows through the inclined plate 141, the uppermost organic phase flows out immediately, thereby improving the separation efficiency of the grid plate 140 for the organic phase and the aqueous phase.

[0050] In this embodiment, the angle between the inclined plate 141 and the horizontal plane is 45°, which can maximize the efficiency of the organic phase passing through the grid plate 140 while ensuring the separation effect of the grid plate 140.

[0051] In some embodiments, the clarification device further includes a guide vane 150, at least one of which is provided. The guide vane 150 is capable of dividing the guide chamber 120 into at least two guide steps. (Refer to...) Figure 4 The outlet of the upper-level guide step is connected to the inlet of the lower-level guide step, thus forming a serpentine flow path. The fluid flow direction in adjacent guide steps is opposite. The feed pipe 200 is located at the inlet of the first-level guide step 121, while the guide column 300 is located at the outlet of the first-level guide step 121. Each guide step is equipped with at least one grid plate 140.

[0052] By setting up flow guide steps, the mixture can be separated in multiple stages, which further improves the separation effect between the organic phase and the aqueous phase, and is more conducive to the subsequent recovery of precious metals.

[0053] In this embodiment, the oil guide pipe 400 passes through each flow guide step, and the oil guide pipe 400 is provided with multiple inlets, each inlet being respectively located above each flow guide step, thereby guiding the organic phase entering each flow guide step to the organic phase clarification chamber 130.

[0054] In this embodiment, refer to Figure 4 The system is equipped with four flow-guiding steps, which, from right to left, are the first flow-guiding step 121, the second flow-guiding step 122, the third flow-guiding step 123, and the fourth flow-guiding step 124. The aqueous phase clarification chamber 110 is located to the left of the fourth flow-guiding step 124, and the organic phase clarification chamber 130 is located to the right of the first flow-guiding step 121. Each flow-guiding step is equipped with three grid plates 140, and the oil guide pipe 400 extends in the left-right direction, with its outlet located at its right end.

[0055] In some embodiments, refer to Figure 1 , Figure 3 and Figure 4The clarification device also includes an overflow weir 500, which is located at the outlet of each guide step. The overflow weir 500 is vertically oriented and has openings at both its upper and lower ends. The upper end of the overflow weir 500 is higher than the outlet of the guide step. The liquid flowing to the overflow weir 500 has its aqueous phase entering through the lower opening and reaching the outlet of the guide step. This prevents the organic phase separated on the upper layer of the mixture from flowing to the next guide step, further reducing the amount of organic phase entering the aqueous clarification chamber 110 and improving the separation effect between the aqueous and organic phases.

[0056] In this embodiment, the outlet of the second-stage guide step 122 is located at the front end, the outlet of the third-stage guide step 123 is located at the rear end, and the outlet of the fourth-stage guide step 124 is located at the front end. After the liquid is separated by the guide column 300, most of the aqueous phase flows into the second-stage guide step 122 and undergoes further stratification through the grid plate 140 within the second-stage guide step 122. At the front end of the second guide step, the overflow weir 500 further reduces the organic phase in the liquid before it flows into the third guide step. The liquid undergoes further stratification through the grid plate 140 within the third guide step, and under the separation action of the overflow weir 500 at the rear end of the third guide step, the organic phase entering the fourth guide step is further reduced. The liquid undergoes further stratification through the grid plate 140 within the fourth guide step, and under the separation action of the overflow weir 500 at the front end of the fourth guide step, the organic phase entering the aqueous phase clarification chamber 110 is further reduced.

[0057] In this embodiment, since both the aqueous phase outlet 111 and the outlet of the fourth guide step are located at the front end, a flow channel 160 is provided at the outlet of the fourth guide step. The flow channel 160 extends in the front-back direction and opens to the rear. The liquid flowing out from the fourth guide step first enters the flow channel 160 and flows to the rear end of the aqueous phase clarification chamber 110, and then flows through the grid plate 140 in the aqueous phase clarification chamber 110 to the aqueous phase outlet 111 at the front end of the aqueous phase clarification chamber 110.

[0058] It is understandable that both the aqueous phase outlet 111 and the organic phase outlet 131 are located at the front end, which is more conducive to the opening and closing of the aqueous phase outlet 111 and the organic phase outlet 131.

[0059] In some embodiments, refer to Figure 7 A baffle 800 is installed above the aqueous phase outlet 111. One end of the baffle 800 is connected to the inner wall of the tank 100, and the other end is inclined downwards. It can be understood that by setting the baffle 800, the lower aqueous phase can be drawn away first, and the upper organic phase can be separated to a great extent, which can effectively prevent the organic phase and aqueous phase from being drawn away together, thus improving the quality of the product.

[0060] In this embodiment, the baffle 800 is connected 300 mm above the water phase outlet 111. The connecting plate for connecting the baffle 800 and the inner wall of the tank 100 extends horizontally 300 mm backward, and the angle between the baffle 800 and the horizontal plane is 45°.

[0061] In some embodiments, refer to Figure 7 The clarification device also includes an oil removal device 700. The oil removal device 700 is installed inside the aqueous phase clarification chamber 110 and can remove any remaining traces of organic phase in the aqueous phase clarification chamber 110. The oil removal device 700 includes an adsorbent and a lifting component. The lifting component is installed at the top of the tank 100, and its output end is connected to the adsorbent. Under the driving action of the lifting component, the adsorbent can move up and down.

[0062] It is understandable that the oil removal device 700 is located at the outlet of the aqueous phase clarification chamber 110. When the lifting component drives the adsorbent to move downward to the upper liquid layer, the organic phase in the upper liquid layer can be adsorbed onto the adsorbent, thereby further reducing the flow of organic phase from the aqueous phase outlet 111 and improving the quality of the product.

[0063] In this embodiment, the adsorbent of the oil removal device 700 is made of fibrous material. The fibrous material is a hydrophobic material. The adsorbent is fluffy and is placed in a porous cuboid container. The liquid enters the adsorbent through the holes of the cuboid container. The surface of the fibrous material of the adsorbent can adsorb the organic phase in the aqueous phase. These organic phases form an oil film on the fiber surface, and the organic phase in the aqueous phase is removed.

[0064] In some embodiments, the lifting component is a rope traction component, and the rope state is controlled by a switch external to the clarification device, thereby realizing the lifting and lowering of the adsorbent. The lifting component can also be a cylinder, hydraulic cylinder, etc., and is not specifically limited here.

[0065] In some embodiments, refer to Figure 7 A baffle 900 is provided at the outlet of the aqueous phase clarification chamber 110. The baffle 900 is located below the adsorbent and above the aqueous phase outlet 111. When the lifting component drives the adsorbent to move downward, the lower end of the adsorbent can contact the upper end of the baffle 900 and be blocked by the baffle 900. The adsorbent cannot continue to move downward, thus preventing the adsorbent of the oil removal device 700 from being sucked into the pipe outside the aqueous phase outlet 111 and causing blockage.

[0066] In this embodiment, the partition 900 and the baffle 800 are arranged opposite to each other. The partition 900 is connected to the side of the grid plate 140 closest to the baffle 800. Together, the partition 900 and the baffle 800 hold the adsorbent of the oil removal device 700 at a height of 410mm above the bottom surface of the aqueous phase clarification chamber 110. This allows for good adsorption of the organic phase and also prevents the adsorbent from being sucked into the aqueous phase outlet 111 and causing blockage.

[0067] In some embodiments, refer to Figure 6 The side wall of the tank 100 is provided with multiple sight glasses 600. The sight glasses 600 are located in the aqueous phase clarification chamber 110, the flow guiding chamber 120 and the organic phase clarification chamber 130 respectively. The operator can observe the liquid state inside the aqueous phase clarification chamber 110, the flow guiding chamber 120 and the organic phase clarification chamber 130 through the sight glasses 600, especially the height position of the organic phase.

[0068] After observing the height of the organic phase in the aqueous clarification chamber 110 through the sight glass 600, the operator can open or close the oil removal device 700 and the aqueous outlet 111 according to the height of the organic phase. If organic phase enters the aqueous clarification chamber 110 as observed through the sight glass 600, and the liquid level of the organic phase is not lower than the baffle 800, the aqueous outlet 111 does not need to be closed. The adsorbent of the oil removal device 700 can be placed in the upper layer of the liquid for adsorption and oil removal, and the baffle 800 can isolate most of the organic phase above it.

[0069] In some embodiments, the oil guide pipe 400 is movably connected to the top of the tank 100 and the height position of the oil guide pipe 400 can be adjusted, that is, the height position of the oil guide pipe 400 relative to the bottom surface of the tank 100. The operator adjusts the oil guide pipe 400 according to the liquid level of the organic phase so as to guide the upper organic phase in the guide chamber 120 to the organic phase clarification chamber 130 and reduce the mixing of water phase in the organic phase clarification chamber 130.

[0070] Understandably, the oil guide pipe 400 can be connected to the top of the tank 100 via screws, and the distance between the oil guide pipe 400 and the top of the tank 100 can be adjusted using these screws. Alternatively, the oil guide pipe 400 can be connected to the top of the tank 100 via a rope, and its height can be adjusted by changing the length of the rope. The oil guide pipe 400 can also be height-adjusted using linear drive components such as electric cylinders, pneumatic cylinders, or hydraulic cylinders.

[0071] In some embodiments, refer to Figure 8The flow guiding chamber 120 is equipped with a mounting plate 320, and the flow guiding column 300 is movably connected to the mounting plate 320. The height of the branch port 310 in the flow guiding column 300 relative to the mounting plate 320 can be adjusted. The operator adjusts the flow guiding column 300 according to the height of the organic phase to allow the aqueous phase to enter the next flow guiding step through the branch port 310, while most of the organic phase is isolated in the space between the flow guiding column 300 and the feed pipe 200, reducing the amount of organic phase entering the next flow guiding step and facilitating the separation of the aqueous and organic phases.

[0072] In this embodiment, the lower end of the guide column 300 is provided with an external thread structure 330, and the mounting plate 320 is horizontally arranged. The mounting plate 320 is provided with a threaded hole. The operator can adjust the height position of the guide column 300 by rotating the guide column 300, thereby adjusting the height position of the diversion port 310.

[0073] In this embodiment, a sight glass 600 is provided on the front side of each guide step of the guide chamber 120. The operator can observe the height of the organic phase in each guide step through the sight glass 600, thereby adjusting the height of the oil guide pipe 400 and the guide column 300.

[0074] In this embodiment, the sight glasses 600 are all located on the front side of the tank 100, making it more convenient for operators to observe.

[0075] In some embodiments, a manhole is provided on the top of the tank 100. The manhole is located on the top of each flow guide step of the aqueous phase clarification chamber 110 and the flow guide chamber 120, as well as the top of the organic phase clarification chamber 130, which facilitates personnel to enter the tank 100 for inspection and maintenance.

[0076] When separating raffinate or back-extraction liquid using the clarification device of this embodiment, the raffinate or back-extraction liquid enters the first-stage guide step 121 of the tank 100 through the feed pipe 200. Under the guidance of the feed pipe 200, the liquid's potential energy is reduced, avoiding vortex disturbance. After entering the first-stage guide step 121, the liquid passes through multiple grid plates 140 to the bottom guide column 300. Under the action of the grid plates 140, the liquid undergoes separation and stratification of the organic phase and the aqueous phase. The organic phase is located above the aqueous phase, and the aqueous phase flows to the second-stage guide step 122 through the diversion port 310 of the guide column 300, while most of the organic phase is isolated at the first-stage guide step 121.

[0077] After the liquid enters the second-stage guide step 122, it is further separated and stratified by the grid plate 140, so that the organic phase mixed in the aqueous phase is located in the upper layer. The aqueous phase enters the third-stage guide step 123 through the overflow weir 500 at the outlet of the second-stage guide step 122, while the organic phase in the upper layer is isolated at the second-stage guide step 122. After the liquid enters the third-stage guide step 123, it is further separated and stratified by the grid plate 140 within the third-stage guide step 123. The organic phase is separated from the aqueous phase, and the aqueous phase enters the fourth-stage guide step 124 through the overflow weir 500 at the outlet of the third-stage guide step 123, while the organic phase in the upper layer is isolated at the third-stage guide step 123. After the liquid enters the fourth-stage guide step 124, it is further separated into layers by the grid plate 140 inside the fourth-stage guide step 124. The aqueous phase enters the diversion channel 160 through the overflow weir 500 at the outlet of the fourth-stage guide step 124, and flows through the diversion channel 160 to the rear end of the aqueous phase clarification chamber 110, where it is further separated into layers by the grid plate 140 inside the aqueous phase clarification chamber 110.

[0078] The oil guide pipe 400 guides the organic phase into the first-stage guide step 121, the second-stage guide step 122, the third-stage guide step 123 and the fourth-stage guide step 124 to flow into the organic phase clarification chamber 130. The organic phase flows out through the organic phase outlet 131 of the organic phase clarification chamber 130 and is recovered. The organic phase has a low water content, which is beneficial for subsequent reuse in the extraction device.

[0079] The aqueous phase that reaches the front end of the aqueous phase clarification chamber 110 flows out through the aqueous phase outlet 111. If the operator observes through the sight glass 600 that there is a small amount of organic phase above the aqueous phase at the location of the aqueous phase outlet 111, the oil removal device 700 is turned on, allowing the lifting component to drive the adsorbent to move downward to the organic phase above the aqueous phase. The organic phase can be adsorbed on the adsorbent, thereby further preventing the aqueous phase flowing out through the aqueous phase outlet 111 from containing organic phase, thus improving the separation effect of aqueous phase and organic phase.

[0080] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A clarification apparatus, characterized in that, include: The tank (100) is provided with an aqueous phase clarification chamber (110), an organic phase clarification chamber (130) and a flow guiding chamber (120). Each of the aqueous phase clarification chamber (110), the flow guiding chamber (120) and the organic phase clarification chamber (130) is provided with at least one grid plate (140). The grid plate (140) is arranged perpendicular to the flow direction of the fluid. The aqueous phase clarification chamber (110) is provided with an aqueous phase outlet (111), and the organic phase clarification chamber (130) is provided with an organic phase outlet (131). A feed pipe (200) is provided at the inlet end of the flow guide chamber (120). The feed pipe (200) includes a vertical pipe (210), a bend pipe (220), and a horizontal pipe (230). The upper end of the vertical pipe (210) is connected to the top of the flow guide chamber (120), and the lower end of the vertical pipe (210) is connected to the horizontal pipe (230) through the bend pipe (220). The outlet of the horizontal pipe (230) is set towards the side wall of the flow guide chamber (120), and the pipe wall of the horizontal pipe (230) is provided with at least one hole (240). A flow guide column (300) is provided in the flow guide chamber (120), and the flow guide column (300) is provided with a flow divider (310), which is connected to the aqueous phase clarification chamber (110); An oil guide pipe (400) is provided at the upper part of the flow chamber (120), and the outlet of the oil guide pipe (400) is connected to the organic phase clarification chamber (130).

2. The clarification apparatus according to claim 1, characterized in that, Each of the grid plates (140) has an inclined plate (141) at its upper end, the inclined plate (141) being inclined upward in a first direction, the first direction being opposite to the flow direction of the fluid passing through the grid plate (140).

3. The clarification apparatus according to claim 1, characterized in that, The clarification apparatus further includes: At least one guide plate (150) is used to divide the guide chamber (120) into at least two guide steps. The outlet of the upper guide step is connected to the inlet of the lower guide step. The flow direction of the fluid in the two adjacent guide steps is opposite. The feed pipe (200) is located at the inlet of the first guide step. The guide column (300) is located at the outlet of the first guide step. At least one grid plate (140) is provided in each guide step.

4. The clarification apparatus according to claim 3, characterized in that, The clarification apparatus further includes: An overflow weir (500) is provided at the outlet of each of the guide steps. The overflow weir (500) is arranged in a vertical direction and has openings at both the upper and lower ends. The upper end of the overflow weir (500) is higher than the outlet of the guide step.

5. The clarification apparatus according to claim 1, characterized in that, A baffle (800) is provided above the water phase outlet (111). One end of the baffle (800) is connected to the inner wall of the tank (100), and the other end is inclined downward.

6. The clarification apparatus according to claim 1 or 5, characterized in that, The clarification apparatus further includes: An oil removal device (700) is located at the outlet end of the aqueous phase clarification chamber (110). The oil removal device (700) includes an adsorbent and a lifting component. The lifting component is installed on the top of the tank (100), and the adsorbent is connected to the output end of the lifting component.

7. The clarification apparatus according to claim 6, characterized in that, The outlet of the aqueous clarification chamber (110) is provided with a partition (900). The partition (900) is located below the adsorbent and above the aqueous outlet (111). When the lifting component drives the adsorbent to move downward, the partition (900) contacts the lower end of the adsorbent.

8. The clarification apparatus according to claim 1, characterized in that, The sidewall of the tank (100) is provided with a plurality of sight glasses (600), which are respectively located in the aqueous phase clarification chamber (110), the flow guiding chamber (120) and the organic phase clarification chamber (130).

9. The clarification apparatus according to claim 8, characterized in that, The oil guide pipe (400) is movably connected to the top of the tank (100), and the height of the oil guide pipe (400) relative to the bottom surface of the tank (100) is adjustable.

10. The clarification apparatus according to claim 8, characterized in that, The flow chamber (120) is provided with an installation plate (320), and the flow column (300) is movably connected to the installation plate (320) to adjust the height of the diversion port (310) relative to the installation plate (320).

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