A high efficiency multi-stage mixed clarification extraction method

Abstract

The application discloses a kind of high-efficiency multistage mixed clarification extraction methods, comprising the following steps: step one: oil phase liquid and aqueous liquid are respectively input from the input port of the two ends of mixed clarification extraction box and enter corresponding mixing chamber, oil phase liquid and aqueous liquid are respectively along oil phase channel and aqueous channel into the mixing chamber in its conveying direction, while in the process of aqueous liquid conveying, aqueous liquid is refluxed into the mixing chamber where it is discharged along reflux channel;Step two: the mixed extractor in the mixing chamber carries out mixed extraction to the oil phase liquid and aqueous liquid entering the mixing chamber, and the mixed liquid is discharged into the clarification chamber from the liquid outlet at the top of the mixing chamber through the drainage channel.The application can improve the mixed extraction effect and extraction recovery rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mixed extraction, in particular to a high-efficiency multi-stage mixed clarification extraction method. BACKGROUND

[0002] Liquid-liquid extraction refers to a process in which solutes in one liquid phase are redistributed in another liquid phase through physical or chemical action after the two completely immiscible or partially miscible liquid phases are contacted.

[0003] The mixed clarification extraction tank belongs to a kind of equipment for grading contact mass transfer, which mainly consists of a mixing chamber and a clarification chamber. The clarification chamber is an empty chamber with a large horizontal cross-sectional area, which is used to accelerate the coagulation and stratification of liquid droplets. The mixing chamber is equipped with a stirrer to promote the breaking and uniform mixing of liquid droplets. According to the separation requirements, the mixed clarification extraction tank can be used in single stage or can be cascaded. When the cascade countercurrent operation is used, the feed liquid and the extractant are added to the stages at both ends of the cascade, and the raffinate and the extract are discharged in the opposite stages.

[0004] When the mixed clarification extraction tank is used for extraction operation, the mixing efficiency and the extraction recovery rate of the extraction operation are affected due to the low mixing degree in the mixing chamber and the short phase separation time in the clarification chamber. SUMMARY

[0005] The purpose of the present application is to provide a high-efficiency multi-stage mixed clarification extraction method, which can improve the mixing extraction effect and the extraction recovery rate.

[0006] The technical solution adopted by the present application to solve the above problems is as follows:

[0007] A high-efficiency multi-stage mixed clarification extraction method, comprising the following steps:

[0008] Step 1: The oil phase liquid and the water phase liquid are respectively introduced into the mixing chamber in the clarification chamber along the oil phase channel and the water phase channel, and at the same time, the water phase liquid is backflowed into the mixing chamber from which it is discharged along the backflow channel during the water phase liquid transport process;

[0009] Step 2: The mixed extractor in the mixing chamber performs mixed extraction on the oil phase liquid and the water phase liquid entering the mixing chamber, and the mixed liquid is discharged from the liquid outlet at the top end of the mixing chamber and is introduced into the clarification chamber through the drainage channel;

[0010] Step 3: The oil phase liquid and the water phase liquid formed by phase separation in the clarification chamber are introduced into the next mixing chamber along the oil phase channel and the water phase channel, respectively, and at the same time, the water phase liquid in the clarification chamber is again introduced into the mixing chamber from which it is discharged along the backflow channel.

[0011] As a further improvement of the above technical solution, the conveying direction of the oil phase liquid along the oil phase channel is opposite to the conveying direction of the water phase liquid along the water phase channel and is the same as the conveying direction of the water phase liquid along the reflux channel.

[0012] As a further improvement of the above technical solution, the fluid volume of the water phase liquid in the water phase channel is greater than the fluid volume of the water phase liquid in the reflux channel.

[0013] As a further improvement of the above technical solution, the space at the bottom of the mixing chamber is divided into three parts and is communicated with the liquid outlets of the oil phase channel, the water phase channel and the reflux channel respectively.

[0014] As a further improvement of the above technical solution, the oil phase channel, the water phase channel, the reflux channel and the mixing chamber are located at one end of the clarification chamber, and the liquid outlet of the drainage channel is located at the other end of the clarification chamber.

[0015] As a further improvement of the above technical solution, the liquid inlets of the water phase channel and the oil phase channel are communicated with the bottom and the top of the clarification chamber respectively, the water phase channel is in inverted U shape, the liquid inlet of the oil phase channel is higher than the highest part of the water phase channel, and the liquid outlets of the water phase channel and the oil phase channel are communicated with the bottoms of the mixing chambers located at the left and right sides of the clarification chamber respectively.

[0016] As a further improvement of the above technical solution, the reflux channel is in inverted U shape, the highest part of the reflux channel is lower than the liquid inlet of the oil phase channel, and the liquid inlet and the liquid outlet of the reflux channel are communicated with the bottom of the clarification chamber and the bottom of the mixing chamber respectively.

[0017] As a further improvement of the above technical solution, the diameter of the drainage channel gradually increases from the liquid inlet to the liquid outlet, the bottom surface of the drainage channel is arranged in an inclined manner, and a plurality of shunt plates arranged in a pyramid shape and a plurality of resistance plates arranged in a straight line are sequentially arranged in the drainage channel from the liquid inlet to the liquid outlet.

[0018] Compared with the prior art, the present application has the following advantages and effects:

[0019] (1) The oil phase liquid and the water phase liquid enter the mixing chamber located in the conveying direction thereof through the oil phase channel and the water phase channel respectively, and the mixing and extraction effect of the mixing chamber on the oil phase liquid and the water phase liquid is combined, so that the mixing and extraction effect and the extraction recovery rate of the mixing and clarification extraction box are improved.

[0020] (2) The water phase liquid in the clarification chamber can flow back into the mixing chamber through the reflux channel and be mixed and extracted with the oil phase liquid in the mixing chamber again, so that the mixing degree and the extraction efficiency in a single mixing chamber are improved, and the extraction recovery rate of the extraction box is ensured.

[0021] (3) The present application avoids the phenomenon that the oil phase liquid and the water phase liquid in the mixing chamber sink and float respectively, improves the mixing degree, and guarantees the efficiency of the mixing extraction. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of a high-efficiency multi-stage mixed clarification extraction method according to Embodiment 1.

[0023] Figure 2 is a structural schematic diagram of a flow channel setting structure of a high-efficiency multi-stage mixed clarification extraction method according to Embodiment 1.

[0024] Figure 3 is a structural schematic diagram of an oil phase channel shown in Figure 2 .

[0025] Figure 4 is a structural schematic diagram of a water phase channel and a reflux channel shown in Figure 2 .

[0026] Figure 5 is a structural schematic diagram of a water phase channel and a reflux channel shown in Figure 2 .

[0027] Figure 6 is a structural schematic diagram of a flow channel shown in Figure 2 .

[0028] Figure 7 is a structural schematic diagram of an internal setting of a flow channel shown in Figure 6 .

[0029] Figure 8 is a structural schematic diagram of a multi-stage mixed clarification extraction tank according to Embodiment 2.

[0030] Figure 9 is a structural schematic diagram of an internal structure of a multi-stage mixed clarification extraction tank according to Embodiment 2.

[0031] Figure 10 is a structural schematic diagram of a part one of a clarification chamber shown in Figure 9 .

[0032] Figure 11 is a structural schematic side view of an internal structure of a mixing chamber shown in Figure 9 .

[0033] Figure 12 is a structural schematic diagram of a part two of a clarification chamber shown in Figure 9 .

[0034] Figure 13 is a structural schematic diagram of a part two of a clarification chamber shown in Figure 9The diagram shows an enlarged view of a partial structure of the clarification chamber shown.

[0035] Figure 14 yes Figure 9 The diagram shows a bottom view of the interior structure of the mixed-use building.

[0036] Figure 15 yes Figure 3 The diagram shows an enlarged view of a partial structure of the clarification chamber shown.

[0037] Figure 16 yes Figure 13 The diagram shows the structure of the mixing extractor.

[0038] Figure 17 yes Figure 16 The diagram shows the structure of the main body.

[0039] The components include: oil phase channel 11, water phase channel 12, reflux channel 13, clarification chamber 2, mixing chamber 21, grid plate 22, first partition chamber 23, second partition chamber 24, mixing extractor 3, main body 31, top plate 311, bottom plate 312, connecting plate 313, rotating shaft 32, motor 33, propulsion impeller 34, turbine 35, first moving impeller 36, second moving impeller 37, diversion channel 4, flow divider 41, flow baffle 42, box body 5, inlet 51, outlet 52, observation chamber 6, reflector 61, support plate 7, liquid inlet chamber 71, first partition 81, second partition 82, first chamber 83, second chamber 84, third chamber 85, through hole 86, stationary impeller 87, liquid outlet 91, and liquid inlet 92. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0041] Example 1.

[0042] See Figures 1-5 This embodiment presents a highly efficient multi-stage mixing clarification extraction method, comprising the following steps:

[0043] Step 1: The oil phase liquid and the water phase liquid enter the mixing chamber 21 in the clarifying chamber 2 located in its conveying direction one by one along the oil phase channel 11 and the water phase channel 12 respectively. At the same time, during the conveying of the water phase liquid, the water phase liquid flows back into the mixing chamber 21 from which it is discharged along the return channel 13.

[0044] Step 2: The mixing extractor 3 in the mixing chamber 21 mixes and extracts the oil phase liquid and the aqueous phase liquid entering the mixing chamber 21, and discharges the mixture from the bottom up from the outlet at the top of the mixing chamber 21 and guides it to the clarification chamber 2 through the drainage channel 4;

[0045] Step three: the oil phase liquid and the water phase liquid formed by the phase separation in the clarification chamber 2 enter the next mixing chamber 21 in the conveying direction of the oil phase channel 11 and the water phase channel 12 respectively, while the water phase liquid in the clarification chamber 2 flows into the mixing chamber 21 again in the backflow channel 13.

[0046] In this embodiment, the conveying direction of the oil phase liquid along the oil phase channel 11 is opposite to the conveying direction of the water phase liquid along the water phase channel 12 and the same as the conveying direction of the water phase liquid along the backflow channel 13, which facilitates the arrangement of the oil phase channel 11 and the water phase channel 12, thereby controlling the volume of the mixing extraction device.

[0047] In this embodiment, the fluid volume of the water phase liquid in the water phase channel 12 is greater than that in the backflow channel 13, which ensures that the water phase liquid enters the mixing chamber 21 in the conveying direction step by step.

[0048] In this embodiment, the space at the bottom of the mixing chamber 21 is divided into three parts and communicates with the liquid outlets of the oil phase channel 11, the water phase channel 12 and the backflow channel 13 respectively, which reduces the contact between the oil phase liquid and the water phase liquid before entering the mixing extractor 3 and also reduces the influence of the collision of the liquids in the water phase channel 12, the oil phase channel 11 and the backflow channel 13 at the bottom of the mixing chamber 21 on the entry of the liquids into the mixing extractor 3.

[0049] Referring to Figure 2 , the oil phase channel 11, the water phase channel 12, the backflow channel 13 and the mixing chamber 21 are located on one end of the clarification chamber 2, and the liquid outlet of the drainage channel 4 is located on the other end of the clarification chamber 2, so that the mixed liquid discharged from the mixing chamber 21 is far away from the fluid channel and the mixing chamber 21, which prolongs the residence time of the mixed liquid in the clarification chamber, so that the mixed liquid can enter the corresponding mixing chamber 21 after the phase separation in the clarification chamber 2 is completed, thereby improving the mixing extraction efficiency and the extraction recovery rate.

[0050] Referring to Figures 3-5 , the liquid inlets of the water phase channel 12 and the oil phase channel 11 communicate with the bottom and the top of the clarification chamber 2 respectively, the water phase channel 12 is in the shape of inverted U, the liquid inlet of the oil phase channel 11 is higher than the highest point of the water phase channel 12, and the liquid outlets of the water phase channel 12 and the oil phase channel 11 communicate with the bottom of the mixing chamber 21 located on the left and right sides of the clarification chamber 2 respectively. Through the arrangement of the liquid inlets and the liquid outlets of the water phase channel 12 and the oil phase channel 11, the difficulty of the backflow of the water phase liquid and the oil phase liquid into the clarification chamber 2 is improved, thereby reducing the influence of the backflow of the water phase liquid and the oil phase liquid on the stability of the phase separation effect in the clarification chamber 2.

[0051] After the mixed liquid in the clarification chamber 2 is separated into two phases, the upper layer of the clarification chamber 2 is the oil phase liquid, and the lower layer is the water phase liquid. The water phase liquid in the lower layer of the clarification chamber 2 enters from the liquid inlet of the water phase channel 12 and gradually reaches the highest point of the water phase channel 12 during the process of the liquid level rising in the clarification chamber 2, and the water phase liquid gradually fills the water phase channel 12 and is transported into the corresponding mixing chamber 21 during the process of the liquid level continuously rising in the clarification chamber 2 (as shown by the white arrows in Figure 4 、 Figure 5 the middle of the figure). When the liquid level in the clarification chamber 2 rises to above the liquid inlet of the oil phase channel 11, the oil phase liquid in the upper layer of the clarification chamber 2 enters the oil phase channel 11 and enters the corresponding mixing chamber 21 along the oil phase channel 11 (as shown by the arrows in Figure 3 the middle of the figure).

[0052] Referring to Figure 4 、 Figure 5 , the reflux channel 13 is in the shape of an inverted U, which increases the difficulty of the water phase liquid flowing back into the clarification chamber 2, thereby reducing the influence of the backflow of the water phase liquid on the stability of the separation effect in the clarification chamber 2. The highest point of the reflux channel 13 is lower than the liquid inlet of the oil phase channel 11, and the liquid inlet and the liquid outlet of the reflux channel 13 are respectively connected to the bottom of the clarification chamber 2 and the bottom of the mixing chamber 21.

[0053] The water phase liquid in the clarification chamber 2 after being separated is reflowed into the mixing chamber 21 through the reflux channel 13 and mixed with the oil phase liquid in the mixing chamber 21 again, thereby improving the mixing degree of the water phase liquid and the oil phase liquid.

[0054] The water phase liquid in the lower layer of the clarification chamber 2 enters from the liquid inlet of the reflux channel 13 and gradually reaches the highest point of the reflux channel 13 during the process of the liquid level rising in the clarification chamber 2, and the water phase liquid gradually fills the reflux channel 13 and is transported into the corresponding mixing chamber 21 during the process of the liquid level continuously rising in the clarification chamber 2 (as shown by the black arrows in Figure 4 、 Figure 5 the middle of the figure).

[0055] Referring to Figure 6 、 Figure 7 , the diameter of the drainage channel 4 gradually increases from the liquid inlet to the liquid outlet, the bottom surface of the drainage channel 4 is arranged in an inclined manner, and a plurality of flow dividing pieces 41 arranged in a pyramid shape and a plurality of flow blocking pieces 42 arranged in a straight line are sequentially arranged in the drainage channel 4 from the liquid inlet to the liquid outlet, which plays a role of stirring the mixed liquid discharged from the mixing chamber 21, improves the mixing degree of the mixed liquid, thereby ensuring the separation effect of the water phase liquid and the oil phase liquid, improving the extraction recovery rate of the equipment, and also reducing the flow rate of the mixed liquid entering the clarification chamber 2.

[0056] Embodiment two.

[0057] Referring to Figures 8-13 , the embodiment is a multi-stage mixed clarification extraction tank based on the high-efficiency multi-stage mixed clarification extraction method of embodiment one, comprising a tank body 5, a plurality of equally-spaced linearly-arranged clarification chambers 2 are arranged in the tank body 5, water-phase liquid and oil-phase liquid input ports 51 and output ports 52 are respectively arranged on the two ends of the tank body 5 along the arrangement direction of the clarification chambers 2, a mixing chamber 21 is arranged in each clarification chamber 2, a mixing extractor 3 is detachably arranged in the mixing chamber 21 from top to bottom, the liquid outlet of the mixing chamber 21 is connected to the clarification chamber 2 through a drainage channel 4, a fluid channel for conveying the water-phase liquid and the oil-phase liquid in the clarification chamber 2 to the mixing chambers 21 of the two adjacent clarification chambers 2 and a reflux channel 13 for conveying the water-phase liquid in the clarification chamber 2 to the mixing chamber 21 are arranged in the clarification chamber 2, the fluid channel, the reflux channel 13 and the mixing chamber 21 are arranged on one end of the clarification chamber 2, and the liquid outlet of the drainage channel 4 is arranged on the other end of the clarification chamber 2.

[0058] In use, the oil-phase liquid and the water-phase liquid are respectively input from the input ports 51 on the two ends of the mixed clarification extraction tank and enter the corresponding mixing chambers 21, the oil-phase liquid and the water-phase liquid are respectively input into the mixing chambers 21 located on the conveying direction through the oil-phase channel 11 and the water-phase channel 12, and the water-phase liquid is refluxed into the mixing chamber 21 through the reflux channel 13 during the conveying of the water-phase liquid.

[0059] The mixing extractor 3 in the mixing chamber 21 performs mixed extraction on the oil-phase liquid and the water-phase liquid entering the mixing chamber 21, and the mixed liquid is discharged from the top end of the mixing chamber 21 and is drained into the clarification chamber 2 through the drainage channel 4.

[0060] Meanwhile, the oil-phase liquid and the water-phase liquid separated in the clarification chamber 2 enter the next mixing chamber 21 located on the conveying direction through the oil-phase channel 11 and the water-phase channel 12, and the water-phase liquid in the clarification chamber 2 is again flowed into the mixing chamber 21 through the reflux channel 13.

[0061] In the embodiment, the fluid channel comprises the water-phase channel 12 and the oil-phase channel 11, the structures of the drainage channel 4, the reflux channel 13, the water-phase channel 12 and the oil-phase channel 11 are the same as those of embodiment one, and the liquid outlet of the top end of the mixing chamber 21 is higher than the liquid inlet of the oil-phase channel 11.

[0062] Referring to Figure 12 , Figure 13 , a plurality of observation cavities 6 for observing the liquid level in the clarification chamber 2 are arranged on the side surface of the tank body 5, the observation cavities 6 are in one-to-one correspondence with and connected to the clarification chambers 2, a reflecting sheet 61 is arranged in the tank body 5 and located in the observation cavity 6.

[0063] The liquid level height in the clarification chamber 2 is observed through the observation cavity 6, so as to adjust the flow rate of the oil phase liquid and the water phase liquid input into the mixed clarification extraction tank, so that the oil phase liquid and the water phase liquid can be transported along the fluid channel and the water phase liquid can be backflowed along the backflow channel 13, thereby ensuring the normal use of the mixed clarification extraction tank.

[0064] Referring to Figure 14 , the bottom of the mixing chamber 21 is provided with a support plate 7 for abutting against the mixing extractor 3, and the bottom of the mixing chamber 21 is divided into three liquid inlet cavities 71 by the support plate 7, which are respectively connected with the liquid outlet of the water phase channel 12, the oil phase channel 11 and the backflow channel 13, thereby reducing the contact between the oil phase liquid and the water phase liquid before entering the mixing extractor 3, and also reducing the influence of the liquid in the water phase channel 12, the oil phase channel 11 and the backflow channel 13 on the liquid entering the mixing extractor 3 due to the collision of the liquid at the bottom of the mixing chamber 21.

[0065] Referring to Figure 15 , the clarification chamber 2 is divided into a first sub-chamber 23 and a second sub-chamber 24 in communication through a barrier plate 22, the mixing chamber 21, the fluid channel and the backflow channel 13 are all located in the first sub-chamber 23, and the drainage channel 4 is located directly above the first sub-chamber 23 and its liquid outlet is connected with the second sub-chamber 24, thereby reducing the influence of the phase separation effect of the original mixed liquid in the clarification chamber 2 caused by the mixed liquid from the drainage channel 4, and also playing a role in isolating the dirt in the mixed liquid.

[0066] Referring to Figure 16 , the mixing extractor 3 comprises a main body 31, the main body 31 is a frame structure, a rotating shaft 32 is rotatably arranged on the main body 31 and a motor 33 for driving the rotating shaft 32 to rotate is installed on the main body 31, a propeller 34, a turbine 35, a first dynamic impeller 36 and two second dynamic impellers 37 are fixed on the rotating shaft 32, the main body 31 is sequentially divided into a first cavity 83, a second cavity 84 and a third cavity 85 from top to bottom by a first partition plate 81 and a second partition plate 82, the two second dynamic impellers 37 are respectively located in the first cavity 83 and the second cavity 84, through holes 86 are formed in the first partition plate 81 and the second partition plate 82, the propeller 34 is located in the through hole 86 of the first partition plate 81, a static impeller 87 is fixed in the through hole 86 of the second partition plate 82, the static impeller 87 is sleeved on the rotating shaft 32, the turbine 35 is located directly above the liquid inlet of the third cavity 85, and the first dynamic impeller 36 is located between the turbine 35 and the static impeller 87.

[0067] In use, the oil phase liquid and the water phase liquid entering the third chamber 85 from the bottom of the mixing chamber 21 are sucked into the third chamber 85 and then transported into the second chamber 84 and the first chamber 83 by the rotation of the turbine 35. During the transportation, the oil phase liquid and the water phase liquid are mixed and extracted by the cutting effect of the vane wheel 87 and the stirring effect of the first impeller 36 and the second impeller 37, and the mixed liquid can be discharged from the liquid outlet at the top of the mixing chamber 21 by the effect of the rotation of the propeller 34.

[0068] Referring to Figure 17 The main body 31 comprises a top plate 311, a bottom plate 312 and a plurality of connecting pieces 313 for connecting the top plate 311 and the bottom plate 312, the top plate 311 and the bottom plate 312 are parallel, the bottom plate 312 is provided with a liquid inlet, and the two ends of the connecting pieces 313 are detachably mounted on the top plate 311 and the bottom plate 312, respectively, facilitating the assembly and maintenance of the mixing and extraction assembly. The sheet structure of the connecting pieces 313 can block the flow of the water phase liquid and the oil phase liquid in the mixing chamber under the action of the first impeller 36 and the second impeller 37, thereby achieving the stirring effect, improving the mixing degree of the liquid, and further ensuring the mixing and extraction efficiency and the extraction recovery rate.

[0069] The above description in the specification is only an example of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the content of the specification or exceed the scope defined by the claims.

Claims

1. A highly efficient multi-stage hybrid-settling extraction process, characterized in that, The method comprises the following steps: Step 1: the oil phase liquid and the water phase liquid are respectively fed into the mixing chamber in the clarification chamber along the oil phase channel and the water phase channel, and the water phase liquid flows back into the mixing chamber along the backflow channel during the feeding of the water phase liquid; Step 2: the mixing extractor in the mixing chamber mixes and extracts the oil phase liquid and the water phase liquid, and the mixed liquid is discharged from the liquid outlet at the top of the mixing chamber and is guided into the clarification chamber through the guide channel; Step 3: the oil phase liquid and the water phase liquid formed by phase separation in the clarification chamber are respectively fed into the next mixing chamber along the oil phase channel and the water phase channel, and the water phase liquid in the clarification chamber flows back into the mixing chamber along the backflow channel again; The space at the bottom of the mixing chamber is divided into three parts and is connected with the liquid outlets of the oil phase channel, the water phase channel and the backflow channel; The liquid inlets of the water phase channel and the oil phase channel are connected with the bottom and the top of the clarification chamber respectively, the water phase channel is in the shape of inverted U, the liquid inlet of the oil phase channel is higher than the highest part of the water phase channel, and the liquid outlets of the water phase channel and the oil phase channel are connected with the bottoms of the mixing chambers on the left and right sides of the clarification chamber respectively; The mixing extractor comprises a main body, the main body is in the form of a frame structure, a rotating shaft is arranged on the main body and is provided with a motor for driving the rotating shaft to rotate, a propeller, a turbine, a first dynamic impeller and two second dynamic impellers are fixed on the rotating shaft, the main body is divided into a first chamber, a second chamber and a third chamber from top to bottom by a first partition plate and a second partition plate, the two second dynamic impellers are arranged in the first chamber and the second chamber respectively, the first partition plate and the second partition plate are both provided with through holes, the propeller is arranged in the through hole of the first partition plate, a static impeller is fixed in the through hole of the second partition plate, the static impeller is sleeved on the rotating shaft, the turbine is arranged above the liquid inlet of the third chamber, and the first dynamic impeller is arranged between the turbine and the static impeller.

2. The efficient multistage hybrid-settling extraction process according to claim 1, characterized in that: The feeding direction of the oil phase liquid along the oil phase channel is opposite to the feeding direction of the water phase liquid along the water phase channel and is the same as the feeding direction of the water phase liquid along the backflow channel.

3. The efficient multistage hybrid-settling extraction process of claim 1, wherein: The flow amount of the water phase liquid in the water phase channel is greater than the flow amount of the water phase liquid in the backflow channel.

4. The efficient multistage hybrid-settling extraction process of claim 1, wherein: The oil phase channel, the water phase channel, the backflow channel and the mixing chamber are arranged on one end of the clarification chamber, and the liquid outlet of the guide channel is arranged on the other end of the clarification chamber.

5. The efficient multistage hybrid-settling extraction process of claim 1, wherein: The backflow channel is in the shape of inverted U, the highest part of the backflow channel is lower than the liquid inlet of the oil phase channel, and the liquid inlet and the liquid outlet of the backflow channel are connected with the bottom of the clarification chamber and the bottom of the mixing chamber respectively.

6. The efficient multistage hybrid-settling extraction process of claim 1, wherein: The diameter of the guide channel gradually increases from the liquid inlet to the liquid outlet, the bottom surface of the guide channel is arranged in an inclined manner, a plurality of shunt plates arranged in the shape of a pyramid and a plurality of resistance plates arranged in a straight line are arranged in the guide channel from the liquid inlet to the liquid outlet.

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