Enhanced extraction separation system for bio-based fermentation liquor

Abstract

The enhanced extraction and separation system comprises a liquid membrane extraction device, a preliminary sedimentation device and an enhanced phase separation device which are connected in sequence, the liquid membrane extraction device is provided with a fermentation liquor inlet and an extraction agent inlet, and the liquid membrane extraction device is used for enabling a mixed material of the fermentation liquor and an extraction agent to continuously form a liquid membrane, liquid filaments and liquid drops; the liquid membrane extraction effect is achieved; the primary sedimentation device is used for carrying out pre-sedimentation treatment on the mixed liquid discharged from the liquid membrane extraction device; the reinforced phase separation device comprises an extraction liquid reinforced phase separator and a raffinate reinforced phase separator, and the extraction liquid reinforced phase separator is connected with an extraction liquid outlet of the preliminary sedimentation device and used for rapidly separating raffinate carried in the extraction liquid; and the raffinate reinforced phase separator is connected with the raffinate outlet of the primary sedimentation device and is used for quickly separating the extract contained in the raffinate. According to the invention, the liquid membrane extraction and reinforced phase separator technology is reasonably applied to the working condition of the bio-based fermentation liquor, and good extraction and separation effects are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of extraction and separation, in particular to an enhanced extraction and separation system for bio-based fermentation liquid. Background Art

[0002] Bio-based chemicals refer to environmentally friendly chemical products produced from lignocellulosic agricultural and forestry wastes such as straw other than food. In the increasingly competitive energy market, using biowaste as raw materials to replace traditional fossil fuels to produce bulk or fine chemicals not only has advantages in economic cost, but also responds to the global call to build an environmentally friendly society.

[0003] In the production process of bio-based products, a large number of extraction and stripping operations are involved, such as the extraction and purification of lactic acid, citric acid, and acetic acid. The extraction methods currently used in the bio-based industry are mainly stirring extraction, plate extraction, and centrifuge extraction, and then entering the sedimentation tank to separate the extract and the raffinate. These extraction methods are all based on the principle of droplet extraction. Therefore, there are common problems: 1. Low extraction efficiency, high residual useful substances in the raffinate, resulting in low product yield. 2. Incomplete separation after extraction, resulting in more extracts in the raffinate and more raffinate in the extract, resulting in a waste of resources. 3. The separation time of the sedimentation tank is long, resulting in a large area occupied by the equipment. 4. The separation of the sedimentation tank is an intermittent operation and cannot be operated continuously, resulting in low equipment utilization efficiency. Utility Model Content

[0004] In view of the above technical problems, the purpose of the utility model is to provide an enhanced extraction and separation system for bio-based fermentation broth, which rationally applies liquid membrane extraction and enhanced phase separator technology to bio-based fermentation broth conditions, achieving good extraction and separation effects.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An enhanced extraction and separation system for bio-based fermentation broth,

[0007] It includes a liquid membrane extraction device, a preliminary sedimentation device and an enhanced phase separation device connected in sequence,

[0008] The liquid membrane extraction device has a fermentation liquid inlet and an extractant inlet, and is used to continuously form a liquid membrane, liquid filaments and liquid droplets from a mixture of the fermentation liquid and the extractant to achieve a liquid membrane extraction effect;

[0009] The preliminary sedimentation device is used to perform preliminary sedimentation treatment on the mixed liquid from the liquid membrane extraction device;

[0010] The enhanced phase separation device comprises an extract enhanced phase separator and a raffinate enhanced phase separator. The extract enhanced phase separator is connected to the extract outlet of the preliminary sedimentation device and is used to quickly separate the raffinate carried in the extract; the raffinate enhanced phase separator is connected to the raffinate outlet of the preliminary sedimentation device and is used to quickly separate the extract contained in the raffinate.

[0011] In some technical schemes, the liquid membrane extraction device is provided with a feeding unit, which includes a fermentation liquid inlet pipe and an extractant inlet pipe. The fermentation liquid inlet pipe passes through the fermentation liquid inlet and a first nozzle is arranged at the outlet end. The extractant inlet pipe passes through the extractant inlet and a second nozzle is arranged at the outlet end. The first nozzle and the second nozzle are arranged opposite to each other.

[0012] In some technical solutions, the liquid membrane extraction device is further provided with an extraction unit, and the extraction unit includes a rotating filler and a rotating shaft. The rotating filler is arranged around the outside of the feeding unit, and the rotating shaft is concentrically connected to the rotating filler and driven to rotate by an external driving device.

[0013] In some technical solutions, the rotating filler is a loose fiber bed.

[0014] In some technical solutions, the preliminary sedimentation device includes a shell and a first baffle and a second baffle arranged vertically inside.

[0015] The bottom side of the first baffle is connected to the bottom wall of the shell, and a first gap is reserved between the top side and the top wall of the shell, and the first gap connects the feed space on one side of the first baffle with the extraction liquid placement space on the other side;

[0016] The top side of the second baffle is connected to the top wall of the shell, and a second gap is reserved between the bottom side and the bottom wall of the shell, and the second gap connects the feed space on one side of the second baffle with the raffinate placement space on the other side.

[0017] In some technical solutions, the preliminary settling device has a mixed liquid inlet and a light phase outlet and a heavy phase outlet.

[0018] The mixed liquid inlet is connected to the liquid membrane extraction device, the light phase outlet is arranged on the side wall of the extract placement space, and the light phase outlet is connected to the extract enhanced phase separator through an extract pump; the heavy phase outlet is arranged on the side wall of the raffinate placement space, and the heavy phase outlet is connected to the raffinate enhanced phase separator through a raffinate pump.

[0019] In some technical solutions, the extract enhanced phase separator includes a first fiber multiplication section and a first sedimentation section, the first fiber multiplication section promotes the growth and separation of droplets of the raffinate, and the first sedimentation section separates the extract;

[0020] The raffinate enhanced phase separator comprises a second fiber multiplication section and a second sedimentation section, wherein the second fiber multiplication section promotes the growth and separation of droplets of the extract, and the second sedimentation section separates the extract.

[0021] In some technical solutions, the fiber multiplication section selects a loose fiber bed or a dense fiber bed according to the actual situation of whether the material contains solid particles.

[0022] In some technical solutions, the extract enhanced phase separator has an extract inlet and a first extract outlet and a first raffinate outlet, the extract inlet is connected to the first fiber multiplication section, and the first extract outlet and the first raffinate outlet are respectively connected to the first settling section;

[0023] The raffinate enhanced phase separator has a raffinate inlet and a second extract outlet and a second raffinate outlet, the raffinate inlet is connected to the second fiber multiplication section, and the second extract outlet and the second raffinate outlet are respectively connected to the second sedimentation section.

[0024] In some technical solutions, the extraction liquid inlet is connected to an extraction liquid inlet pipe, and the outlet end of the extraction liquid inlet pipe is connected to a first distributor, and the first distributor evenly distributes the extraction liquid to the entire flow cross-section of the first fiber multiplication section;

[0025] The raffinate inlet is connected to a raffinate inlet pipe, and the outlet end of the raffinate inlet pipe is connected to a second distributor, and the second distributor evenly distributes the raffinate to the entire flow cross-section of the second fiber multiplication section.

[0026] The utility model adopts the above technical solution to have at least the following beneficial effects:

[0027] 1. The utility model provides an enhanced extraction and separation system for bio-based fermentation broth, which reasonably applies liquid membrane extraction and enhanced phase separator technology to bio-based fermentation broth conditions, and achieves good extraction and separation effects; compared with traditional extraction and separation technology, it has strong continuity, small device footprint (saves more than 50% of floor space), high extraction efficiency, high separation efficiency, saves extraction agent consumption, high yield (product yield increased by more than 5%, extraction agent yield increased by more than 0.5%) and improves product quality, greatly improving the industry competitiveness of bio-based fermentation broth enterprises;

[0028] 2. The utility model provides an enhanced extraction and separation system for bio-based fermentation broth. By setting a preliminary sedimentation device to pre-sediment the mixed liquid from the liquid membrane extraction device, the load of the subsequent enhanced phase separation device can be significantly reduced, and the separation efficiency, product yield and quality can be significantly improved;

[0029] 3. The utility model provides an enhanced extraction and separation system for bio-based fermentation liquid, wherein the liquid membrane extraction device is provided with a feed unit and an extraction unit respectively, and the feed unit sprays the fermentation liquid and the extractant through nozzles arranged opposite to each other to achieve the degree of droplet extraction; the mixed liquid is rotated and cut into fine droplets by the outer extraction unit to finally form a liquid film, so as to achieve the second full contact mixing of the mixed liquid and achieve the degree of liquid membrane extraction; thereby the extraction efficiency is improved, the extraction is more thorough, and the product quality is higher;

[0030] 4. The utility model provides an enhanced extraction and separation system for bio-based fermentation liquid, wherein a distributor, a fiber multiplication section and a sedimentation section are sequentially arranged inside the enhanced phase separation device along the liquid flow direction. The distributor evenly distributes the liquid flow to the entire flow cross-section of the fiber multiplication section. Small droplets are adsorbed and collided on the surface of the dense fiber filter element, gradually grow, and leave the dense fiber filter element after growing to a certain extent, and complete separation is achieved in the sedimentation section; thereby, the separation efficiency is higher, the consumption of the extractant is saved, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings and their marks required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic structural diagram of an enhanced extraction and separation system for bio-based fermentation broth according to an embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of the preliminary sedimentation device described in an embodiment of the utility model;

[0034] Figure 3 It is a schematic structural diagram of the enhanced phase separator described in an embodiment of the utility model.

[0035] The meanings of the symbols in the figure are as follows:

[0036] 10—liquid membrane extraction device, 11—rotating filler, 12—rotating shaft;

[0037] 20—preliminary sedimentation device, 21—first baffle, 22—second baffle;

[0038] 31—extract liquid pump, 32—raffinate pump;

[0039] 41 - extract liquid enhanced phase separator, 411 - first fiber multiplication section, 412 - first sedimentation section, 42 - raffinate enhanced phase separator, 421 - second fiber multiplication section, 422 - second sedimentation section. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0041] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0042] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0045] Example 1

[0046] like Figure 1, this embodiment provides an enhanced extraction and separation system for bio-based fermentation liquid, comprising a liquid membrane extraction device 10, a preliminary sedimentation device 20 and an enhanced phase separation device connected in sequence. The liquid membrane extraction device 10 has a fermentation liquid inlet and an extractant inlet, and the liquid membrane extraction device 10 is used to continuously form a liquid film, liquid filaments and liquid droplets from the mixture of the fermentation liquid and the extractant to achieve a liquid membrane extraction effect; the preliminary sedimentation device 20 is used to perform a pre-sedimentation treatment on the mixed liquid discharged from the liquid membrane extraction device 10; the enhanced phase separation device comprises an extract enhanced phase separator 41 and a raffinate enhanced phase separator 42, the extract enhanced phase separator 41 is connected to the extract outlet of the preliminary sedimentation device 20, and is used to quickly separate the raffinate carried in the extract; the raffinate enhanced phase separator 42 is connected to the raffinate outlet of the preliminary sedimentation device 20, and is used to quickly separate the extract contained in the raffinate.

[0047] In the above embodiment, the liquid membrane extraction device 10 is provided with an extraction unit, which includes a rotating filler 11 and a rotating shaft 12. The rotating shaft 12 is concentrically connected to the rotating filler 11 and is driven to rotate by an external driving device; the rotating filler 11 is preferably a loose fiber bed, but it can also be, for example, a stainless steel wire mesh, a stainless steel corrugated plate, or a catalyst-loaded filler.

[0048] Specifically, the loose fiber bed is woven from extremely fine fiber materials, and the loose fiber bed is connected to the rotating shaft 12 as a whole, and is driven by a motor to rotate at high speed. When the mixed material contacts the high-speed rotating loose fiber bed, it is instantly torn into extremely thin liquid films, liquid filaments and liquid droplets, generating a huge phase contact area, so that the two phases are evenly and fully mixed; at the same time, the renewal rate of the formed liquid film, liquid filaments and liquid droplets will also be greatly improved, and the transfer process and microscopic mixing process of the two phases are greatly enhanced, thereby achieving efficient extraction (reaching the level of liquid film extraction).

[0049] In the above embodiment, the extract enhanced phase separator 41 includes a first fiber multiplication section 411 and a first sedimentation section 412, the first fiber multiplication section 411 promotes the growth and separation of droplets of the extract, and the first sedimentation section 412 separates the extract; the extract enhanced phase separator 42 includes a second fiber multiplication section 421 and a second sedimentation section 422, the second fiber multiplication section 421 promotes the growth and separation of droplets of the extract, and the second sedimentation section 422 separates the extract.

[0050] Specifically, the fiber multiplication section is preferably a dense fiber filter element, and the dense fiber bed can be adjusted to a loose fiber bed according to the actual situation of whether the material contains fine solid particles.

[0051] When the raffinate in the extract passes through the dense fiber filter element, small droplets of the raffinate are constantly adsorbed and collided on the surface of the dense fiber filter element and gradually grow. When they grow to a certain extent, they leave the dense fiber filter element and are completely separated in the sedimentation section; When the extract in the raffinate passes through the dense fiber filter element, small droplets of the extract are constantly adsorbed and collided on the surface of the dense fiber filter element and gradually grow. When they grow to a certain extent, they leave the dense fiber filter element and are completely separated in the sedimentation section.

[0052] This application rationally applies liquid membrane extraction and enhanced phase separator technology to bio-based fermentation broth conditions, achieving good extraction and separation effects:

[0053] The extraction unit of the liquid membrane extraction device 10 is used to rotate and cut the mixed material into fine droplets to finally form a liquid membrane, so that the mixed liquid is fully contacted and mixed to achieve the degree of liquid membrane extraction; thereby, the extraction efficiency is improved, the extraction is more thorough, and the product quality is higher;

[0054] By sequentially arranging the fiber multiplication section and the sedimentation section along the liquid flow direction inside the enhanced phase separation device, the small droplets are adsorbed and collided on the surface of the dense fiber filter element, gradually growing, and leaving the dense fiber filter element after growing to a certain extent, and achieving complete separation in the sedimentation section; thus, the separation efficiency is higher, the consumption of the extractant is saved, and the product quality is improved;

[0055] Compared with traditional extraction and separation technology, it has strong continuity, small equipment footprint (saves more than 50% of floor space), high extraction efficiency, high separation efficiency, saves extraction agent consumption, high yield (product yield increased by more than 5%, extraction agent yield increased by more than 0.5%) and improves product quality, which greatly improves the industry competitiveness of bio-based fermentation liquid enterprises.

[0056] Example 2

[0057] like Figure 1 Based on the solution of Example 1, this embodiment makes the following improvements:

[0058] The liquid membrane extraction device 10 is provided with a feed unit, which includes a fermentation liquid inlet pipe and an extractant inlet pipe. The fermentation liquid inlet pipe passes through the fermentation liquid inlet and a first nozzle is arranged at the outlet end. The extractant inlet pipe passes through the extractant inlet and a second nozzle is arranged at the outlet end. The first nozzle and the second nozzle are arranged opposite to each other.

[0059] In this embodiment, the feed unit sprays the fermentation liquid and the extractant against each other through nozzles arranged opposite to each other to achieve droplet extraction; the mixed liquid is then rotated and cut into fine droplets by the outer extraction unit to finally form a liquid film, thereby achieving a second full contact mixing of the mixed liquid to achieve liquid film extraction; thereby, the extraction efficiency is improved, the extraction is more thorough, and the product quality is higher.

[0060] Example 3

[0061] like Figure 2 Based on the solution of Example 1, this embodiment makes the following improvements:

[0062] The preliminary sedimentation device 20 comprises an outer shell and a first baffle 21 and a second baffle 22 vertically arranged inside.

[0063] The bottom side of the first baffle 21 is connected to the bottom wall of the housing, and a first gap is reserved between the top side and the top wall of the housing, and the first gap connects the feed space on one side of the first baffle 21 with the extraction liquid placement space on the other side;

[0064] The top side of the second baffle 22 is connected to the top wall of the shell, and a second gap is reserved between the bottom side and the bottom wall of the shell, and the second gap connects the feed space on one side of the second baffle 22 with the raffinate placement space on the other side.

[0065] Specifically, the preliminary sedimentation device 20 has a mixed liquid inlet and a light phase outlet and a heavy phase outlet. The mixed liquid inlet is connected to the liquid membrane extraction device 10, and the light phase outlet is arranged on the side wall of the extract placement space, and the light phase outlet is connected to the extract enhanced phase separator 41 through the extract pump 31; the heavy phase outlet is arranged on the side wall of the extract placement space, and the heavy phase outlet is connected to the extract enhanced phase separator 42 through the extract pump 32.

[0066] In this embodiment, the preliminary sedimentation device 20 is composed of a square tank with two baffles in the middle, and the preliminary sedimentation device 20 is divided into three parts. The mixed liquid enters from the feed space in the middle part, and the raffinate belonging to the heavy phase enters the raffinate placement space on the left from the gap reserved at the bottom of the second baffle 22 on the left; the extract liquid belongs to the light phase and enters the extract placement space from the space reserved at the top of the first baffle 21 on the right; thereby achieving preliminary separation of the extract liquid and the raffinate; the structure is ingenious and the design is reasonable to achieve efficient sedimentation.

[0067] In some alternative schemes of the present embodiment, the baffle may be arranged vertically or inclined; in addition to reserving a gap between the baffle and the outer shell to form a channel, a channel may also be formed by opening a flow hole on the baffle; the mixed liquid may also be evenly distributed to the liquid inlet space through a distributor; and other similar deformation and replacement schemes should all be within the scope of protection of the present application.

[0068] Example 4

[0069] like Figure 3 Based on the solution of Example 1, this embodiment makes the following improvements:

[0070] The extract enhanced phase separator 41 has an extract inlet and a first extract outlet and a first raffinate outlet, the extract inlet is connected to the first fiber multiplication section 411, and the first extract outlet and the first raffinate outlet are respectively connected to the first settling section 412;

[0071] The extraction liquid inlet is connected to an extraction liquid inlet pipe, and the outlet end of the extraction liquid inlet pipe is connected to a first distributor, and the first distributor evenly distributes the extraction liquid to the entire flow cross-section of the first fiber multiplication section 411.

[0072] The raffinate enhanced phase separator 42 has a raffinate inlet and a second extract outlet and a second raffinate outlet, the raffinate inlet is connected to the second fiber multiplication section 421, and the second extract outlet and the second raffinate outlet are respectively connected to the second settling section 422;

[0073] The raffinate inlet is connected to a raffinate inlet pipe, and the outlet end of the raffinate inlet pipe is connected to a second distributor, and the second distributor evenly distributes the raffinate to the entire flow cross-section of the second fiber multiplication section 421 .

[0074] In this embodiment, the uniform distribution of the liquid by the distributor helps to improve the droplet multiplication and separation effects of the dense fiber filter element, resulting in higher separation efficiency and improved product quality.

[0075] In some alternatives to this embodiment, a certain height difference may be set in the sedimentation section to help improve the sedimentation separation efficiency.

[0076] Example 5

[0077] This embodiment provides a process mechanism description based on the schemes of embodiments 1-4:

[0078] The fermentation liquid and the extractant enter the liquid membrane extraction device 10 through the extractant inlet and the fermentation liquid inlet. The fermentation liquid and the extractant are first sprayed and mixed through the first nozzle and the second nozzle respectively. The mixed liquid moves toward the loose fiber bed under the centrifugal force of the loose fiber bed driven by the rotating shaft 12. When the mixed liquid contacts the loose fiber bed, the mixed liquid is cut into fine droplets by the rotation of the loose fiber bed and finally forms a liquid film, thereby realizing the second full contact mixing of the mixed liquid.

[0079] The mixed liquid passing through the loose fiber bed is the mixed liquid of the extract phase and the raffinate phase after the liquid membrane extraction. The mixed liquid enters the preliminary sedimentation device 20 to first perform preliminary separation of the raffinate phase and the extract phase in the mixed liquid. The raffinate and the extract liquid preliminarily separated by the preliminary sedimentation device 20 are pressurized by the raffinate pump 32 and the extract pump 31 respectively, and then enter the enhanced phase separator. When the extract liquid passes through the dense fiber filter element in the extract enhanced phase separator 41, the raffinate droplets continue to grow, and finally the extract liquid and the raffinate are quickly separated, and the separation time of the extract liquid and the raffinate is shortened to less than 30 minutes. Similarly, when the raffinate entering the raffinate enhanced phase separator 42 passes through the dense fiber filter element (when the raffinate contains fine solid particles, the dense fiber bed can be replaced by a loose fiber bed, and the loose fiber bed can tolerate a small amount of fine solid particles due to the special weaving process), the extract droplets continue to grow, and finally the extract and the raffinate are quickly separated, and the separation time of the extract and the raffinate is shortened to less than 30 minutes.

[0080] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. An enhanced extraction and separation system for bio-based fermentation broth, characterized in that: It includes a liquid membrane extraction device, a preliminary sedimentation device and an enhanced phase separation device connected in sequence, The liquid membrane extraction device has a fermentation liquid inlet and an extractant inlet, and is used to continuously form a liquid membrane, liquid filaments and liquid droplets from a mixture of the fermentation liquid and the extractant to achieve a liquid membrane extraction effect; The preliminary sedimentation device is used to perform preliminary sedimentation treatment on the mixed liquid from the liquid membrane extraction device; The enhanced phase separation device comprises an extract enhanced phase separator and a raffinate enhanced phase separator. The extract enhanced phase separator is connected to the extract outlet of the preliminary sedimentation device and is used to quickly separate the raffinate carried in the extract; the raffinate enhanced phase separator is connected to the raffinate outlet of the preliminary sedimentation device and is used to quickly separate the extract contained in the raffinate.

2. The enhanced extraction separation system according to claim 1, characterized in that: The liquid membrane extraction device is provided with a feeding unit, which includes a fermentation liquid inlet pipe and an extractant inlet pipe. The fermentation liquid inlet pipe runs through the fermentation liquid inlet and a first nozzle is arranged at the outlet end. The extractant inlet pipe runs through the extractant inlet and a second nozzle is arranged at the outlet end. The first nozzle and the second nozzle are arranged opposite to each other.

3. The enhanced extraction separation system according to claim 2, characterized in that: The liquid membrane extraction device is also provided with an extraction unit, which includes a rotating filler and a rotating shaft. The rotating filler is arranged around the outside of the feeding unit, and the rotating shaft is concentrically connected to the rotating filler and is driven to rotate by an external driving device.

4. The enhanced extraction separation system according to claim 3, characterized in that: The rotating packing is a loose fiber bed.

5. The enhanced extraction separation system according to claim 1, characterized in that: The preliminary sedimentation device comprises an outer shell and a first baffle and a second baffle arranged vertically inside. The bottom side of the first baffle is connected to the bottom wall of the shell, and a first gap is reserved between the top side and the top wall of the shell, and the first gap connects the feed space on one side of the first baffle with the extraction liquid placement space on the other side; The top side of the second baffle is connected to the top wall of the shell, and a second gap is reserved between the bottom side and the bottom wall of the shell, and the second gap connects the feed space on one side of the second baffle with the raffinate placement space on the other side.

6. The enhanced extraction separation system according to claim 5, characterized in that: The preliminary sedimentation device has a mixed liquid inlet and a light phase outlet and a heavy phase outlet. The mixed liquid inlet is connected to the liquid membrane extraction device, the light phase outlet is arranged on the side wall of the extract placement space, and the light phase outlet is connected to the extract enhanced phase separator through an extract pump; the heavy phase outlet is arranged on the side wall of the raffinate placement space, and the heavy phase outlet is connected to the raffinate enhanced phase separator through a raffinate pump.

7. The enhanced extraction separation system according to claim 1, characterized in that: The extract enhanced phase separator comprises a first fiber multiplication section and a first sedimentation section, wherein the first fiber multiplication section promotes the growth and separation of droplets of the raffinate, and the first sedimentation section separates the extract; The raffinate enhanced phase separator comprises a second fiber multiplication section and a second sedimentation section, wherein the second fiber multiplication section promotes the growth and separation of droplets of the extract, and the second sedimentation section separates the extract.

8. The enhanced extraction separation system according to claim 7, characterized in that: The fiber multiplication section selects a loose fiber bed or a dense fiber bed according to the actual situation of whether the material contains solid particles.

9. The enhanced extraction separation system according to claim 7 or 8, characterized in that: The extract enhanced phase separator has an extract inlet and a first extract outlet and a first raffinate outlet, the extract inlet is connected to the first fiber multiplication section, and the first extract outlet and the first raffinate outlet are respectively connected to the first sedimentation section; The raffinate enhanced phase separator has a raffinate inlet and a second extract outlet and a second raffinate outlet, the raffinate inlet is connected to the second fiber multiplication section, and the second extract outlet and the second raffinate outlet are respectively connected to the second sedimentation section.

10. The enhanced extraction separation system according to claim 9, characterized in that: The extraction liquid inlet is connected to an extraction liquid inlet pipe, and the outlet end of the extraction liquid inlet pipe is connected to a first distributor, and the first distributor evenly distributes the extraction liquid to the entire flow cross-section of the first fiber multiplication section; The raffinate inlet is connected to a raffinate inlet pipe, and the outlet end of the raffinate inlet pipe is connected to a second distributor, and the second distributor evenly distributes the raffinate to the entire flow cross-section of the second fiber multiplication section.

Images