CN216855743U - Continuous liquid-liquid extraction separation device - Google Patents
Continuous liquid-liquid extraction separation device Download PDFInfo
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- CN216855743U CN216855743U CN202220392332.9U CN202220392332U CN216855743U CN 216855743 U CN216855743 U CN 216855743U CN 202220392332 U CN202220392332 U CN 202220392332U CN 216855743 U CN216855743 U CN 216855743U
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Abstract
The utility model discloses a continuous liquid-liquid extraction separation device, which belongs to the technical field of extraction in the separation industry and comprises a support, and a strong mixing tank, a settler, a solvent tank and a buffer tank which are arranged on the support and connected through a pipeline, wherein the strong mixing tank and the settler are arranged in more than 2 groups, the strong mixing tank and the settler between each group and between each group are connected in series, and the settlers of each group are arranged in parallel up and down. The extraction separation device can reasonably utilize potential difference to realize gravity transfer, and provides a larger sedimentation area in a settler with a smaller volume, thereby shortening the separation time and increasing the separation effect.
Description
Technical Field
The utility model belongs to the technical field of extraction in the separation industry, and particularly relates to a continuous liquid-liquid extraction separation device.
Background
The liquid-liquid extraction is an important chemical separation technology, has the advantages of wide adaptability, low energy consumption, easy operation, high separation efficiency, large-scale continuous production and the like, and is widely applied to the industries of biological medicine, petrochemical industry, natural substance extraction, new material preparation and the like. With the development of civilization of human society and the continuous discovery of new products, the separated objects become more and more complex, and higher requirements are also put forward on extraction and separation equipment.
The liquid-liquid extraction separation is step-by-step contact extraction operation, the mixing and separation of liquid-liquid phases are obvious in stage, and the mixing, separation, remixing and re-separation are repeated and circulated. When two-phase liquid flow is in continuous contact, the two phases are mixed in the mixing tank at each stage, and are settled and separated in the settler by gravity, so that the multistage continuous operation units can be connected in series according to the process requirements, and the operation flexibility is good. When a cell fails, it can be shorted from the entire device line without affecting the continued operation of other separate cells. The continuous extraction and separation device is one of the most used extraction and separation devices at present due to the strong adaptability to materials, simple and easy manufacture, high reliability and the like.
The continuous extraction and separation device generally comprises a mixing chamber and a settling chamber. In order to ensure the extraction effect, the two-phase feed liquid is strongly stirred in the mixing chamber to fully contact and extract the two phases, and then the two phases are settled and separated in the settling chamber. The 'mixed oil-water continuous separation device' disclosed in CN 212440154U realizes better separation of oil and water through the arrangement of a liquid inlet, a liquid outlet and a baffle, but the whole device is not designed in a plane, and has large occupied area, and when the amount of liquid to be treated is less, the device is not applicable any more. In order to overcome the technical difficulty, part of manufacturers adopt a vertical separator, the middle part of the separator is used for feeding mixed liquid, and the upper end and the lower end of the separator are used for collecting liquid, but under the condition that the mixed liquid cannot be rapidly separated in the separator feeding process, the light phase and the heavy phase in the heavy phase are continuously mixed and separated all the time due to the reverse flow effect of the liquid, and the problem of the light phase entrainment in the heavy phase can not be realized in the continuous production process.
In the industry, a centrifuge is used to rapidly separate two-phase liquids, but because of the high rotation speed of the centrifuge, the power consumption of the equipment is high, and in addition, liquid-liquid extraction is the distribution of effective components among multi-phase solvents, organic solvents are generally used in the process, and the equipment for liquid-liquid separation, such as a disc centrifuge, is very high in equipment cost for ensuring production safety.
Therefore, there is a need for a low-cost liquid-liquid extraction apparatus with good separation effect.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the application provides the liquid-liquid continuous extraction separation device which has large sedimentation area, good extraction separation effect and small phase retention.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the continuous liquid-liquid extraction separation device comprises a support, and a powerful mixing tank, a settler, a solvent tank and a buffer tank which are arranged on the support and connected through pipelines, wherein the powerful mixing tank and the settler are arranged in more than 2 groups, each group of powerful mixing tank and the settler are connected in series, and the settlers of each group are arranged in parallel from top to bottom.
The technical scheme of the utility model is further improved as follows: the settler is of a horizontal cylindrical structure and is horizontally arranged, the length-diameter ratio of the settler is 1: 5-1: 20, one end of the settler is provided with a liquid separating cap, and the other end of the settler is provided with a liquid inlet cap.
The technical scheme of the utility model is further improved as follows: the liquid separating cap is provided with two liquid outlets, the height of the two liquid outlets can be adjusted, and the height difference of the two liquid outlets can be adjusted according to the light and heavy difference of the two phases.
The technical scheme of the utility model is further improved as follows: the settling vessel comprises a settling tube, a liquid separating cap, a liquid inlet cap, a flange and a tetrafluoro gasket which are detachable, and the settling tube is connected with the tetrafluoro gasket through the flange.
The technical scheme of the utility model is further improved as follows: the settler comprises more than 2 sections of settling tubes.
The technical scheme of the utility model is further improved as follows: and a valve is arranged on a pipeline connecting the solvent tank and the powerful mixing tank.
The technical scheme of the utility model is further improved as follows: the length-diameter ratio of the strong mixing tank is 1: 1-1: 2, preferably 1:1.5, the strong mixing tank is provided with a strong stirrer which comprises electromagnetic stirring and mechanical stirring, the rotating speed is 40-130 rmp, and the bottom of the strong mixing tank is provided with a guide pipe.
The technical scheme of the utility model is further improved as follows: the final stage settler is respectively communicated with the buffer tank and the collection tank through a liquid separating cap, and the buffer tank is communicated with the solvent tank.
The technical scheme of the utility model is further improved as follows: the diameter of the powerful mixing tank is 70mm, the height is 100mm, the length-diameter ratio is 1:1.4, the diameter of the settler is 32mm, the length is 150mm, the diameter of the inlet of the liquid inlet cap is 8mm, and the diameter of the liquid separating cap is 8 mm.
The technical scheme of the utility model is further improved as follows: also comprises a solvent tank which is communicated with the solvent tank.
Due to the adoption of the technical scheme, the utility model has the following technical effects:
this application passes through pipeline formula separation chamber, and equipment accessible support realizes that the multilayer is arranged, solves the big problem of area, and curved interface can reduce the restriction of equipment to feed liquid volume by a wide margin moreover. In the separation chamber, the feed liquid moves horizontally, and the separated light phase is easier to diffuse, so that the two phases are thoroughly separated, and the problem of feed liquid entrainment is solved. The settling vessel is of a transverse cylindrical structure, is particularly suitable for separating a system with high viscosity, and simultaneously reduces the retention of an organic phase and the loss of a phase belt; the stirring device of the forced mixing tank has the rotating speed of 40-130 rmp, and the rotating speed can be adjusted according to the dispersion degree of a separation two-phase system, so that the best extraction effect is ensured, and no emulsification is realized; the height of the two liquid outlets of the liquid separating cap can be adjusted, so that the separating effect is guaranteed; the last stage settler is communicated with the buffer tank, the light phase of the last stage is conveyed back to the solvent tank again, and when the extraction rate of the light phase is not up to the standard, the light phase is conveyed back to the solvent tank again for extraction again, or the light phase is used as an extractant and conveyed back again for reuse, so that the solvent is saved. The liquid-liquid extraction separation device is suitable for various separation working conditions.
Drawings
FIG. 1 is a schematic diagram of an apparatus for continuous liquid-liquid extraction separation of the present invention;
the device comprises a solvent tank, a strong mixing tank, a settler, a solvent tank, a support, a buffer tank, a liquid separating cap, a valve, a polytetrafluoroethylene gasket, a flange, a liquid inlet cap, a valve, a polytetrafluoroethylene gasket, a liquid inlet cap, a strong stirrer, a collection tank, a sample tank and a liquid inlet cap, wherein the solvent tank is 1, the strong mixing tank is 2, the settler is 3, the solvent tank is 4, the liquid separating cap is 5, the support is 6, the buffer tank is 7, the liquid inlet cap is 8, the valve is 9, the polytetrafluoroethylene gasket is 10, the flange is 11, the liquid inlet cap is 12, the strong stirrer is 13, the collection tank is 14 and the sample tank is.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the following embodiments.
To better illustrate the technical solution of the present invention, typical but non-limiting examples of the present application are as follows:
example 1
The utility model provides a continuous liquid-liquid extraction separator, includes support 5, sets up strong mixing tank 2, settler 3, solvent jar 1 and buffer tank 6 through the pipe connection on support 5, and strong mixing tank 2 and settler 3 set up more than 2 groups, and strong mixing tank 2 and settler 3 between every group and between the group are established ties, and the settler 3 of every group parallel arrangement from top to bottom.
The settler 3 is in a horizontal cylindrical structure and is horizontally arranged, the length-diameter ratio of the settler 3 is 1: 5-1: 20, one end of the settler is provided with a liquid separating cap 7, the other end of the settler is provided with a liquid inlet cap 11, the liquid separating cap 7 is provided with two liquid outlets, the heights of the two liquid outlets can be adjusted, and the height difference of the two liquid outlets can be adjusted according to the weight difference of two phases.
The settling vessel 3 comprises a settling tube, a liquid separating cap 7, a liquid inlet cap 11, a flange 10 and a tetrafluoro gasket 9 which are detachable, the settling tube is connected with the tetrafluoro gasket 9 through the flange 10, the required settling tube book can be adjusted according to the requirement, more than 2 settling tubes are generally arranged, and the corresponding adjustment can be carried out according to the difference of the specific gravity of two phases.
A valve 8 is arranged on a pipeline connecting the solvent tank 1 and the strong mixing tank 2, and the delivery quantity of the solvent is controlled by the valve 8.
The length-diameter ratio of the forced mixing tank 2 is 1: 1-1: 2, preferably 1:1.5, and the forced mixing tank 2 is made of one or at least two materials of titanium, stainless steel, aluminum, iron, glass and PVC. The strong mixing tank 2 is provided with a strong stirrer 12 which comprises electromagnetic stirring and mechanical stirring, the rotating speed is 40-130 rmp, and the bottom of the strong mixing tank is provided with a guide pipe.
The final-stage settler 3 is respectively communicated with a buffer tank 6 and a collection tank 13 through a separating cap 7, the buffer tank 6 is communicated with the solvent tank 1, and the separated extractant (light phase) can be conveyed to the solvent tank 1 for reusing the solvent. The sample tank 14 is in communication with the first stage intensive mixing tank 2.
As shown in figure 1, a continuous liquid-liquid extraction separation device, 3 stages are connected in series, namely three groups of strong mixing tanks 2 and settlers 3 are arranged, the three settlers 3 are arranged in parallel up and down, the first-stage strong mixing tank 2 is connected with the first-stage settler 3, the other end of the first-stage settler 3 is connected with the second-stage strong mixing tank 2, the bottom of the second-stage strong mixing tank 2 is connected with the second-stage settler 3 through a guide pipe, the other end of the second-stage settler 3 is connected with the third-stage strong mixing tank 2 through a separating cap, the bottom of the third-stage strong mixing tank 2 is connected with the third-stage settler 3 through a guide pipe and a liquid inlet cap 11, the third-stage settler 3 is connected with a buffer tank 6 and a collection tank 13, one end of each stage of settler 3 provided with a separating cap is used for separating liquid, the diameter of the strong mixing tank 2 is 70mm, the height of 100mm, the length-diameter ratio of the separating cap is 1:1.4, the length of DN32mm is selected for a settling chamber, the length of the settling chamber is 150mm, the inlet diameter of the inlet cap is selected from DN8mm, the diameter of the separating cap is DN8 mm.
An example of the separation operation was performed using the liquid-liquid separation apparatus of example 1.
Example 2
A continuous liquid-liquid extraction separation device has specific structural parameters shown in example 1, adopts 3-stage series connection, and the light phase of an extraction system is a normal hexane solution of capsicum oleoresin which enters a first-stage strong mixing tank 2 through a sample tank 14, wherein the content of capsaicin is 1.4 percent, and the content of rhodamine B is 40 ppm. The heavy phase is 40% ethanol, and enters a first-stage strong mixing tank 2 and a third-stage strong mixing tank 2 through a solvent tank 1. The light phase flow rate is 20L/h, and the heavy phase flow rate is 35L/h. And (4) collecting a heavy phase sample from a light phase outlet for analysis, wherein the content of the capsicum oleoresin is 1.4%, and the content of rhodamine B is 10 ppb. And (4) collecting a sample from a heavy phase outlet for analysis, wherein the content of capsanthin is 0.2 percent, and the content of rhodamine B capsaicin is 22.5 ppm. The extraction rate of rhodamine is 98.44%.
Example 3
The continuous liquid-liquid extraction separation device has the specific structural parameters shown in example 1, adopts 3-level serial connection, and adopts n-hexane extract liquid with a light phase of chilli powder as an extraction system, wherein the content of capsanthin is 8 percent, and the content of capsaicin is 2.44 percent. The heavy phase was 0.1% aqueous sodium hydroxide. The light phase flow rate is 20L/h, and the heavy phase flow rate is 35L/h. And a heavy phase sample is collected from a heavy phase outlet for analysis, and the content of capsanthin is 0.02 percent and the content of capsaicin is 1.35 percent. And (4) collecting a sample at a light phase outlet for analysis, wherein the content of capsanthin is 8 percent, and the content of capsaicin is 0.001 percent. The extraction separation rate of the capsaicin is 96.82%.
The detailed structural features and the extraction separation method of the present application are explained by the above examples. The present application is not limited to the above structural features and extraction and separation methods. That is, it is not meant to rely on the above-described detailed structural features and extraction separation methods to be practiced. It should be understood by those skilled in the art that any modifications to the present application, equivalent substitutions of selected parts of the present application, and additions of auxiliary parts and specific embodiments are within the scope of the protection and disclosure of the present application.
Claims (10)
1. A continuous liquid-liquid extraction separation device, characterized in that: including support (5), set up strong mixing tank (2), settler (3), solvent jar (1) and buffer tank (6) through the pipe connection on support (5), strong mixing tank (2) and settler (3) set up more than 2 groups, establish ties with settler (3) between every group and group strong mixing tank (2) between group, parallel arrangement about settler (3) of every group.
2. A continuous liquid-liquid extraction separation device according to claim 1, wherein: the settler (3) is of a horizontal cylindrical structure and is horizontally arranged, the length-diameter ratio of the settler (3) is 1: 5-1: 20, one end of the settler is provided with a liquid separation cap (7), and the other end of the settler is provided with a liquid inlet cap (11).
3. A continuous liquid-liquid extraction separation device according to claim 2, wherein: the liquid separating cap (7) is provided with two liquid outlets, and the heights of the two liquid outlets can be adjusted.
4. A continuous liquid-liquid extraction separation device according to claim 1 wherein: the settling vessel (3) comprises detachable settling tubes, a liquid separating cap (7), a liquid inlet cap (11), a flange (10) and a tetrafluoro gasket (9), and the settling tubes are connected through the flange (10) and the tetrafluoro gasket (9).
5. A continuous liquid-liquid extraction separation device according to claim 4, wherein: the settler (3) comprises more than 2 sections of settling tubes.
6. A continuous liquid-liquid extraction separation device according to claim 1 wherein: and a valve (8) is arranged on a pipeline connecting the solvent tank (1) and the powerful mixing tank (2).
7. A continuous liquid-liquid extraction separation device according to claim 1, wherein: the length-diameter ratio of the strong mixing tank (2) is 1: 1-1: 2, the strong stirrer (12) is arranged and comprises electromagnetic stirring and mechanical stirring, the rotating speed is 40-130 rmp, and a guide pipe is arranged at the bottom of the strong mixing tank (2).
8. A continuous liquid-liquid extraction separation device according to claim 1, wherein: the final-stage settler (3) is respectively communicated with the buffer tank (6) and the collection tank (13) through a liquid separating cap (7), and the buffer tank (6) is communicated with the solvent tank (1).
9. A continuous liquid-liquid extraction separation device according to claim 1, wherein: the diameter of the strong mixing tank (2) is 70mm, the height is 100mm, the length-diameter ratio is 1:1.4, the diameter of the settler (3) is 32mm, the length is 150mm, the inlet diameter of the liquid inlet cap (11) is 8mm, and the diameter of the liquid separating cap (7) is 8 mm.
10. A continuous liquid-liquid extraction separation device according to claim 1, wherein: also comprises a solvent tank (4), and the solvent tank (4) is communicated with the solvent tank (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220392332.9U CN216855743U (en) | 2022-02-25 | 2022-02-25 | Continuous liquid-liquid extraction separation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220392332.9U CN216855743U (en) | 2022-02-25 | 2022-02-25 | Continuous liquid-liquid extraction separation device |
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| CN216855743U true CN216855743U (en) | 2022-07-01 |
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| CN202220392332.9U Active CN216855743U (en) | 2022-02-25 | 2022-02-25 | Continuous liquid-liquid extraction separation device |
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