Continuous extraction device

Abstract

The utility model belongs to the technical field of extraction devices, and particularly relates to a continuous extraction device which comprises heavy-phase liquid and light-phase liquid for extraction, and further comprises a rack and an extraction tank mounted on the rack, a light-phase section, an extraction section and a heavy-phase section are sequentially arranged in the extraction tank from top to bottom, a rotor part and a stator part are arranged in the extraction section, and the rotor part and the stator part are arranged in the extraction section. Wherein the rotor part rotates through a driving device, the rotor part is used for pushing the heavy-phase liquid along the side far away from the axis, and the stator part is used for guiding the heavy-phase liquid along the side close to the axis; the centrifugal force is used for replacing the gravity, and the centrifugal force generated by the rotating rotor part on the heavy phase can reach several times to tens of times of the gravity, so that the mass transfer efficiency between liquid and liquid is greatly improved; and the centrifugal mode enables the heavy phase to move along the radial direction, so that the height of the device is effectively reduced, the occupied area is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of extraction devices, in particular to a continuous extraction device. Background Art

[0002] Extraction, also known as solvent extraction or liquid-liquid extraction, is a separation and purification technology widely used in the fields of chemistry, pharmaceuticals, petroleum, food and environmental protection. It is based on the difference in solubility and distribution coefficient of different substances between two immiscible liquids (usually called extractant and extractant or heavy phase liquid and light phase liquid), and achieves the separation of substances through the migration of solutes between the two phases.

[0003] With the continuous advancement and innovation of science and technology, extraction technology is also constantly developing. Continuous extraction, as a highly efficient separation and purification technology, is particularly suitable for continuous material processing in large-scale production processes. Compared with traditional intermittent extraction, continuous extraction has higher production efficiency, better product quality stability and lower energy consumption.

[0004] For example, the Chinese patent application No. (CN202310292871.4) discloses a continuous extraction device and a continuous extraction method, including: a tower body, which is composed of an upper extraction section, a conveying section, and a lower extraction section arranged in sequence from top to bottom; an organic phase feeding mechanism, which is connected to the lower extraction section, and is used to intermittently pass the organic phase into the lower extraction section to form a first hybrid power; packing layers are respectively arranged in the upper extraction section, the conveying section, and the lower extraction section; the third packing layer located in the lower extraction section uses the first hybrid power to form a second hybrid power, and the second hybrid power gradually decreases from bottom to top through the third packing layer. First, the application adopts an extraction tower for extraction, and relies on the gravity of the heavy phase to flow downward, the mass transfer efficiency is low, and the extraction tower occupies a large area and has a high cost. Utility Model Content

[0005] The purpose of the utility model is to provide a continuous extraction device to solve the above-mentioned technical problems, which achieves the effects of high mass transfer efficiency, small footprint and low cost.

[0006] In view of this, the utility model provides a continuous extraction device, including a heavy phase liquid and a light phase liquid for extraction, and also includes:

[0007] frame;

[0008] The extraction tank is installed on the frame, and has a light phase section, an extraction section and a heavy phase section arranged in sequence from top to bottom;

[0009] A rotor member is installed in the extraction tank and is located in the extraction section, and is rotated by a driving device;

[0010] The stator is mounted on the inner wall of the extraction tank located in the extraction section and is arranged corresponding to the rotor;

[0011] The rotor component is used to push the heavy phase liquid along the side away from the axis, and the stator component is used to guide the heavy phase liquid along the side close to the axis.

[0012] In the above technical solution, further, the rotor component includes:

[0013] The rotating shaft is axially mounted in the extraction tank, and a mounting seat is sleeved on the surface located at the extraction section, and is driven by a driving device;

[0014] The bottom plate is arranged on the mounting seat.

[0015] In the above technical solution, further, the stator component includes:

[0016] The guide plate is sleeved on the surface of the rotating shaft, and the side away from the axis is fixedly connected to the inner wall of the extraction tank;

[0017] A drainage pipe is installed on the drainage plate, with one end being horizontally arranged on the surface of the drainage plate and the other end passing through the drainage plate and extending to above the bottom;

[0018] Wherein, the guide plate is located above the bottom plate.

[0019] In the above technical solution, further, it also includes:

[0020] The first baffle is vertically arranged on the surface of the bottom plate close to the guide plate and is annular;

[0021] The second partition is vertically arranged on the surface of the guide plate close to the bottom plate and is annular;

[0022] Wherein, the first partition plate and the second partition plate are arranged in a staggered manner.

[0023] In the above technical solution, further, it also includes:

[0024] The through hole is formed on the first partition plate and the second partition plate.

[0025] In the above technical solution, further:

[0026] In the direction away from the axis on the upper edge of the bottom plate, the spacing between the plurality of first partitions adjacent to each other decreases in sequence;

[0027] In the direction of the upper edge of the guide plate away from the axis, the spacing between the plurality of second partitions adjacent to each other decreases successively.

[0028] In the above technical solution, further, it also includes:

[0029] The heavy phase liquid inlet is opened on the extraction tank and is connected with the light phase section;

[0030] The light phase liquid outlet is provided on the extraction tank and is connected with the light phase section;

[0031] The heavy phase liquid outlet is provided on the extraction tank and is connected with the heavy phase section;

[0032] The light phase liquid inlet is opened on the extraction tank and is connected with the heavy phase section;

[0033] Wherein, the light phase liquid inlet is arranged tangentially along the inner wall of the extraction tank.

[0034] The beneficial effects of the utility model are:

[0035] 1. By using centrifugal force instead of gravity, the centrifugal force generated by the rotating rotor on the heavy phase can reach several to dozens of times the gravity, which greatly improves the mass transfer efficiency between liquids; and the centrifugal method makes the heavy phase move radially, thereby effectively reducing the height of the device, reducing the floor space and reducing costs.

[0036] 2. Through multiple rotating bottom plates and the first partition, the liquids flow through the extraction section in a relatively reverse and baffled manner, further ensuring sufficient contact and mass transfer, effectively improving the mass transfer efficiency, and ensuring the extraction effect.

[0037] 3. Through the staggered arrangement of multiple first partitions and second partitions, the rotor parts and stator parts can be assembled in multiple layers in the extraction section, thereby forming a multi-stage extraction to meet the process requirements, and the extraction process at each level is carried out simultaneously, greatly improving the extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the utility model;

[0039] Figure 2 It is a schematic diagram of the structure inside the extraction tank of the utility model;

[0040] Figure 3 This utility model Figure 2 The enlarged view of point A in the middle;

[0041] Figure 4 This utility model Figure 3 The enlarged view of point B in the middle;

[0042] The markings in the figure are as follows: 1. frame; 2. extraction tank; 3. light phase section; 4. extraction section; 5. heavy phase section; 6. rotor member; 60. rotating shaft; 61. mounting seat; 62. bottom plate; 63. first partition plate; 7. driving device; 8. stator member; 80. drainage plate; 81. drainage pipe; 82. second partition plate; 9. through hole; 10. heavy phase liquid inlet; 11. light phase liquid outlet; 12. heavy phase liquid outlet; 13. light phase liquid inlet. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0044] Embodiment 1:

[0045] This embodiment provides a continuous extraction device, including a heavy phase liquid and a light phase liquid for extraction, and further comprising:

[0046] Rack 1;

[0047] The extraction tank 2 is mounted on the frame 1, and has a light phase section 3, an extraction section 4 and a heavy phase section 5 arranged therein from top to bottom;

[0048] The rotor member 6 is installed in the extraction tank 2 and is located in the extraction section 4, and is rotated by a driving device 7;

[0049] The stator 8 is mounted on the inner wall of the extraction tank 2 located at the extraction section 4 and is arranged corresponding to the rotor;

[0050] The rotor 6 is used to push the heavy phase liquid along the side away from the axis, and the stator 8 is used to drain the heavy phase liquid along the side close to the axis; and the light phase liquid fills the extraction tank 2;

[0051] Meanwhile, the driving device 7 may adopt a power source such as a motor, a pulley, a belt, etc. which can drive the rotor member 6 to rotate. These are all existing mature technologies and will not be elaborated here.

[0052] It can be seen from this embodiment that by using centrifugal force instead of gravity, the centrifugal force generated by the rotating rotor member 6 on the heavy phase can reach several to dozens of times of gravity, so that the mass transfer efficiency between liquids is greatly improved; and the relative movement between the rotor member 6 and the stator member 8 can have a stirring effect, and has a crushing effect on the heavy phase liquid, further improving the mass transfer efficiency between the extractant and the extracted agent;

[0053] And the centrifugal method makes the heavy phase move radially, thereby effectively reducing the height of the device, reducing the floor space and reducing costs;

[0054] At the same time, the extraction section 4 can be multi-section, that is, the rotor part 6 and the stator part 8 are assembled in multiple layers, thereby forming a multi-stage extraction to meet the process requirements and ensure the extraction effect. The extraction process at each level is carried out simultaneously, which greatly improves the extraction efficiency.

[0055] Embodiment 2:

[0056] This embodiment provides a continuous extraction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The rotor member 6 includes:

[0057] The rotating shaft 60 is axially mounted in the extraction tank 2, and a mounting seat 61 is sleeved on the surface located at the extraction section 4, and is driven by the driving device 7;

[0058] A bottom plate 62 is disposed on the mounting seat 61;

[0059] Among them, both ends of the rotating shaft 60 are delayed out of the extraction tank 2 and are provided with bearing parts. At the same time, a sealing structure is provided between the extraction tank 2. The sealing structure can adopt a sealing method such as a shaft seal, and the mounting seat 61 and the rotating shaft 60 can be connected by a flat key, and the bottom plate 62 and the surface of the mounting seat 61 are fixed by bolts.

[0060] It can be seen from the present embodiment that the heavy phase liquid flows down to the upper surface of the bottom plate 62 due to gravity, and the rotating shaft 60 drives the bottom plate 62 to rotate, which can push the heavy phase liquid on the bottom to be thrown out radially. The centrifugal force replaces gravity and can reach several to dozens of times of gravity, thereby greatly improving the mass transfer efficiency between liquids.

[0061] Embodiment 3:

[0062] This embodiment provides a continuous extraction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the stator 8 includes:

[0063] The guide plate 80 is sleeved on the surface of the rotating shaft 60, and the side away from the axis is fixedly connected to the inner wall of the extraction tank 2;

[0064] The drainage tube 81 is installed on the drainage plate 80, with one end horizontally arranged on the surface of the drainage plate 80 and the other end extending through the drainage plate 80 to above the bottom;

[0065] Wherein, the guide plate 80 is located above the bottom plate 62;

[0066] At the same time, there are multiple drainage tubes 81 that are arranged at equal intervals around the circumference, and an annular plate is also provided on the drainage plate 80 at one end of the inlet of the drainage tube 81 to ensure that the heavy phase liquid flows into the bottom plate 62 through the drainage tube 81.

[0067] It can be seen from this embodiment that the heavy phase liquid is conveniently guided to one side of the axial direction through the drainage plate 80, and the setting of the drainage pipe 81 facilitates the guiding effect on the flow of the heavy phase liquid. At the same time, the drainage pipe 81 can also reduce the impact on the flow of the heavy phase liquid when the light phase liquid is extracted from the light phase section 3.

[0068] Embodiment 4:

[0069] This embodiment provides a continuous extraction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0070] The first partition plate 63 is vertically arranged on the surface of the bottom plate 62 close to the guide plate 80 and is annular;

[0071] The second partition plate 82 is vertically disposed on the surface of the guide plate 80 close to the bottom plate 62 and is annular;

[0072] The first partition 63 and the second partition 82 are arranged in a staggered manner;

[0073] At the same time, the bottom plate 62 and the guide plate 80 are provided with slots for the first partition plate 63 and the second partition plate 82 to be embedded, and the first partition plate 63 and the second partition plate 82 can be interference fit or welded with the slots.

[0074] It can be seen from this embodiment that the first partition plate 63 and the second partition plate 82 are provided to increase the radial movement distance of the heavy phase liquid, thereby effectively increasing the mass transfer time, ensuring the purity of the light phase section 3 and the heavy phase section 5, and ensuring the effect of continuous extraction.

[0075] Embodiment 5:

[0076] This embodiment provides a continuous extraction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0077] The through hole 9 is formed on the first partition plate 63 and the second partition plate 82 .

[0078] It can be seen from this embodiment that the opening of the through hole 9 facilitates further crushing and breaking up of the heavy phase liquid, thereby further improving the mass transfer effect between the extractant and the extracted agent, thereby ensuring the extraction effect.

[0079] Embodiment 6:

[0080] This embodiment provides a continuous extraction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0081] In the direction away from the axis of the bottom plate 62, the spacing between the plurality of adjacent first partitions 63 decreases in sequence;

[0082] In the direction away from the axis of the guide plate 80 , the distances between the plurality of second partition plates 82 adjacent to each other decrease in sequence.

[0083] It can be seen from the present embodiment that by successively reducing the spacing between a plurality of first partitions 63 adjacent to each other and a plurality of second partitions 82 adjacent to each other, that is, gradually reducing the intervals between the heavy phase liquid flowing along the first partitions 63 and the second partitions 82, the mass transfer effect between the extractant and the extracted agent can be further improved to ensure the extraction effect. In addition, the reduction in the gap can increase the flow rate, thereby improving the mass transfer efficiency.

[0084] Embodiment 7:

[0085] This embodiment provides a continuous extraction device, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0086] The heavy phase liquid inlet 10 is provided on the extraction tank 2 and communicated with the light phase section 3;

[0087] The light phase liquid outlet 11 is provided on the extraction tank 2 and is connected to the light phase section 3;

[0088] The heavy phase liquid outlet 12 is provided on the extraction tank 2 and communicated with the heavy phase section 5;

[0089] The light phase liquid inlet 13 is provided on the extraction tank 2 and communicated with the heavy phase section 5;

[0090] The light phase liquid outlet 11 and the heavy phase liquid outlet 12 are both connected to a suction device, which may be a pump or other equipment, and are both existing mature technologies and will not be described in detail here.

[0091] It can be seen from this embodiment that by setting the heavy phase liquid inlet 10 at a high position and the light phase liquid inlet 13 at a low position, that is, adopting the counter-convection method of the extractant and the extracted agent for mass transfer, the continuous mass transfer effect is ensured, and the effective components in the extracted agent are easier to enter the extractant, and the reverse step-by-step extraction can improve the extraction efficiency, and the two liquids in the light phase section 3 and the heavy phase section 5 reach the optimal state respectively, and the amount of extractant used is small.

[0092] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A continuous extraction device, comprising a heavy phase liquid and a light phase liquid for extraction, characterized in that: Also includes: Rack (1); The extraction tank (2) is mounted on the frame (1), and has a light phase section (3), an extraction section (4) and a heavy phase section (5) arranged therein from top to bottom; A rotor member (6) is installed in the extraction tank (2) and is located in the extraction section (4), and is rotated by a driving device (7); A stator component (8) is mounted on the inner wall of the extraction tank (2) located at the extraction section (4) and is arranged corresponding to the rotor; The rotor component (6) is used to push the heavy phase liquid along the side away from the axis, and the stator component (8) is used to guide the heavy phase liquid along the side close to the axis.

2. The continuous extraction device according to claim 1, characterized in that: The rotor member (6) comprises: The rotating shaft (60) is axially mounted in the extraction tank (2), and a mounting seat (61) is sleeved on the surface located at the extraction section (4), and is driven by a driving device (7); The bottom plate (62) is arranged on the mounting seat (61).

3. The continuous extraction device according to claim 2, characterized in that: The stator element (8) comprises: A flow guide plate (80) is sleeved on the surface of the rotating shaft (60), and the side away from the axis is fixedly connected to the inner wall of the extraction tank (2); A drainage pipe (81) is mounted on the drainage plate (80), with one end being horizontally arranged on the surface of the drainage plate (80) and the other end passing through the drainage plate (80) and extending to above the bottom; Wherein, the guide plate (80) is located above the bottom plate (62).

4. The continuous extraction device according to claim 3, characterized in that: Also includes: A first partition plate (63) is vertically arranged on a surface of the bottom plate (62) close to the guide plate (80) and is annular in shape; A second partition plate (82) is vertically arranged on a surface of the guide plate (80) close to the bottom plate (62) and is annular in shape; Wherein, the first partition plate (63) and the second partition plate (82) are arranged in a staggered manner.

5. The continuous extraction device according to claim 4, characterized in that: Also includes: The through hole (9) is formed on the first partition plate (63) and the second partition plate (82).

6. The continuous extraction device according to claim 4, characterized in that: In the direction away from the axis on the bottom plate (62), the spacing between the plurality of adjacent first partitions (63) decreases in sequence; In the direction away from the axis on the guide plate (80), the spacing between the plurality of second partition plates (82) adjacent to each other decreases successively.

7. The continuous extraction device according to claim 1, characterized in that: Also includes: A heavy phase liquid inlet (10) is provided on the extraction tank (2) and is connected to the light phase section (3); A light phase liquid outlet (11) is provided on the extraction tank (2) and is connected to the light phase section (3); A heavy phase liquid outlet (12) is provided on the extraction tank (2) and is connected to the heavy phase section (5); The light phase liquid inlet (13) is provided on the extraction tank (2) and is connected to the heavy phase section (5).

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