Liquid-liquid-solid three-phase extraction separation device

Abstract

The utility model discloses a liquid-liquid-solid three-phase extraction separation device which comprises a mixing area and a phase separation area which are arranged in a box body, a settlement plate and a deslagging hopper are arranged at the lower part of the phase separation area, a heavy-phase overflow weir, a light-phase overflow weir and a deslagging and washing mechanism are arranged in the phase separation area, a stirring motor and a slag scraping mechanism are arranged at the top of the box body, the output end of the stirring motor is connected with a stirring paddle extending into the mixing area, the slag scraping mechanism comprises a sliding rail base used for installing a lead screw sliding rail, a servo motor is arranged on the sliding rail base, a sliding block is arranged on the lead screw sliding rail, the bottom of the sliding block is fixedly connected with a sliding rod extending into the split-phase area, and a scraping plate is arranged at the bottom of the sliding rod. The settling plate and the slag discharging hopper which are obliquely arranged are arranged at the bottom of the split-phase area, so that a solid third phase settled in the split-phase area is enabled to be enriched on the settling plate, slag is regularly discharged to the slag discharging hopper by utilizing the slag scraping mechanism, the solid third phase is cleaned, and the liquid-liquid phase separation device has the advantages that a liquid-liquid phase interface is easy to adjust, and the solid third phase is easy to collect and discharge.

Description

Technical Field

[0001] The utility model belongs to the technical field of extraction and separation, and specifically relates to a liquid-liquid-solid three-phase extraction and separation device. Background Art

[0002] Extraction is the process of transferring a substance from one liquid to another by utilizing the difference in solubility or distribution coefficient of a substance in two immiscible (or slightly soluble) liquids. After repeated extractions, most of the target substances are separated and extracted. Usually, substances with high density are called heavy phases, and substances with low density are called light phases. There are two types of extraction processes. One is that only physical transfer occurs between substances in the heavy phase and light phase. For example, after the completion of an organic synthesis reaction, the organic matter in the reaction liquid is co-extracted and washed with water using an extractant (toluene, ethyl acetate, ether, etc.); the other is that chemical reactions occur between related substances in the heavy phase and light phase first, and then the new products are transferred between the two phases. For example, in the hydrometallurgical industry, the enrichment, separation and purification of elements such as nickel, cobalt, copper, rare earths, indium, lithium, and some isotopes.

[0003] The box-type extraction tank is the most widely used extraction equipment, but it requires that the raw liquid cannot contain solids, that is, it is only suitable for liquid-liquid two-phase extraction systems. In actual applications, the raw liquid needs to be precisely filtered to remove the solid third phase. For feed-liquid systems where the solid third phase is difficult to remove and feed-liquid systems that produce solid third phase byproducts during the extraction process, if the traditional box-type extraction tank is used directly, the solid third phase will accumulate in the extraction tank, blocking the equipment and making it unable to operate normally. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a liquid-liquid-solid three-phase extraction and separation device in view of the deficiencies in the above-mentioned prior art. The device has a novel and reasonable design. An inclined settling plate and a slag discharge bucket are arranged at the bottom of the phase separation zone to ensure that the solid third phase settled in the phase separation zone is enriched on the settling plate. A slag scraping mechanism is used to regularly discharge slag to the slag discharge bucket to clean the solid third phase. The special structure of the phase separation zone of the extraction tank can ensure that the scraper will not be hindered during operation and can push the solid sediment from the settling plate to the slag discharge bucket. The device has the advantages of easy adjustment of the liquid-liquid two-phase interface and easy collection and discharge of the solid third phase, and is convenient for popularization and use.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a liquid-liquid-solid three-phase extraction and separation device, characterized in that: it includes a box body, a mixing zone and a phase separation zone arranged in the box body, an overflow plate with an upper opening is arranged on the side of the mixing zone close to the phase separation zone, a limit plate with a lower opening is arranged on the outer side of the overflow plate, an inclined settling plate and a slag discharge bucket connected to the low position of the settling plate are arranged at the lower part of the phase separation zone, the high position of the settling plate is connected to the bottom of the overflow plate, and a heavy phase overflow weir, a light phase overflow weir and a slag discharge bucket are arranged in the phase separation zone. A slag discharge and washing mechanism is located directly above the bucket and can be raised and lowered. A light phase inlet pipe and a heavy phase inlet pipe connected to the mixing zone are provided on the box body. A stirring motor and a slag scraping mechanism are provided on the top of the box body. The output end of the stirring motor is connected to a stirring paddle extending into the mixing zone. The slag scraping mechanism includes a slide rail base provided on the top of the box body and used for installing a screw slide rail. A servo motor for driving the screw slide rail is provided on the slide rail base. A slider is provided on the screw slide rail. A slide rod extending into the phase separation zone is fixedly connected to the bottom of the slider. A scraper cooperating with the sedimentation plate is provided at the bottom of the slide rod.

[0006] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that: the heavy phase overflow weir includes a heavy phase collecting chamber, a heavy phase separation tube extending into the lower part of the phase separation zone is fixedly connected to the bottom of the heavy phase collecting chamber, the heavy phase separation tube is located in the heavy phase collecting chamber and the pipe section is externally threadedly connected to an adjusting tube, a through hole connected to the heavy phase collecting chamber is opened on the tube wall of the adjusting tube, an adjusting connecting rod is arranged on the top of the adjusting tube, the top of the adjusting connecting rod extends out of the top plate of the box body, and a heavy phase outlet pipe connected to the heavy phase collecting chamber is arranged on the box body.

[0007] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that: the light phase overflow weir includes a light phase collecting chamber, and a light phase outlet pipe connected to the light phase collecting chamber is provided on the box body, and the top of the light phase collecting chamber and the top of the heavy phase collecting chamber are both open structures, and the top of the heavy phase collecting chamber is higher than the top of the light phase collecting chamber.

[0008] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that: the slag discharge and washing mechanism includes a slag discharge plugging plate, a piston rod and a washing pipe are arranged on the slag discharge plugging plate, a cylinder is arranged on the top of the box body, and the top of the piston rod extends out of the box body and cooperates with the cylinder.

[0009] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that a slag discharge pipe extending out of the box body is provided at the bottom of the slag discharge bucket, and a slag discharge valve is installed on the slag discharge pipe.

[0010] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that a discharge pipe extending out of the box body is provided at the bottom of the mixing zone, and a discharge valve is installed on the discharge pipe.

[0011] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that the screw guide rail is arranged in parallel with the sedimentation plate, and the slide rod is perpendicular to the screw guide rail.

[0012] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that the inclination angle of the settling plate is 5° to 25°.

[0013] The above-mentioned liquid-liquid-solid three-phase extraction and separation device is characterized in that the distance between the bottom surface of the heavy phase separation tube and the sedimentation plate is 10mm to 30mm.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. The utility model arranges an inclined settling plate and a slag discharge bucket at the bottom of the phase separation zone to ensure that the solid third phase settled in the phase separation zone is enriched on the settling plate, and the scraping mechanism is used to regularly discharge slag to the slag discharge bucket to clean the solid third phase. The special structure of the phase separation zone of the extraction tank can ensure that the scraper will not be hindered during operation, and the solid sediment can be pushed from the settling plate to the slag discharge bucket. It has the advantages of easy adjustment of the liquid-liquid two-phase interface and easy collection and discharge of the solid third phase. It can effectively solve the problem of solid third phase blocking the equipment and affecting the operation of the traditional box-type extraction tank, and is easy to promote and use.

[0016] 2. The utility model is provided with an overflow plate with an upper opening on one side of the mixing zone close to the phase separation zone, and a limit plate with a lower opening is provided on the outer side of the overflow plate. The mixed liquid in the mixing zone enters the phase separation zone through the opening on the upper part of the overflow plate, is blocked by the limit plate before entering the phase separation zone, and enters the phase separation zone from the cavity between the overflow plate and the limit plate, which can effectively prevent the formation of vortexes and reduce the disturbance to the liquid-liquid two-phase clarification and stratification process and the solid third phase sedimentation process.

[0017] In summary, the utility model has a novel and reasonable design, a wide adaptability to raw materials, and can solve the problem that the traditional box-type extraction tank is not suitable for the liquid-liquid-solid three-phase extraction system; at the same time, the device can effectively adjust the horizontal height of the two-phase interface, and has a wide range of applicability.

[0018] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the utility model.

[0021] Figure 3 for Figure 2 Top view of the .

[0022] Figure 4 for Figure 2 AA section view.

[0023] Description of reference numerals:

[0024] 1—Box; 2—Mixing area; 3—Stirring motor;

[0025] 4—stirring paddle; 5—light phase inlet pipe; 6—heavy phase inlet pipe;

[0026] 7—discharge pipe; 8—discharge valve; 9—overflow plate;

[0027] 10—limiting plate; 11—settling plate; 12—slide rail base;

[0028] 13—Servo motor; 14—Screw guide rail; 15—Slider;

[0029] 16—sliding rod; 17—scraper; 18—phase separation zone;

[0030] 19—heavy phase overflow weir; 19-1—heavy phase collection chamber; 19-2—heavy phase separation tube;

[0031] 19-3—adjusting connecting rod; 19-4—adjusting pipe; 19-5—heavy phase outlet pipe;

[0032] 20—light phase overflow weir; 20-1—light phase collection chamber; 20-2—light phase outlet pipe;

[0033] 21—slag discharge bucket; 22—slag discharge pipe; 23—slag discharge valve;

[0034] 24—slag discharge plugging plate; 25—piston rod; 26—cylinder;

[0035] 27—Washing pipe. DETAILED DESCRIPTION

[0036] like Figures 1 to 4As shown, the utility model comprises a box body 1, a mixing zone 2 and a phase separation zone 18 arranged in the box body 1, an overflow plate 9 with an upper opening is arranged on the side of the mixing zone 2 close to the phase separation zone 18, a limit plate 10 with a lower opening is arranged on the outer side of the overflow plate 9, an inclined settling plate 11 and a slag discharge bucket 21 connected to the low position of the settling plate 11 are arranged at the lower part of the phase separation zone 18, the settling plate 11 is connected to the bottom of the overflow plate 9 at a high position, a heavy phase overflow weir 19, a light phase overflow weir 20 and a slag discharge washing mechanism located directly above the slag discharge bucket 21 and capable of being raised and lowered are arranged in the phase separation zone 18, and a settling plate 11 is arranged on the box body 1. There are a light phase inlet pipe 5 and a heavy phase inlet pipe 6 connected to the mixing zone 2. A stirring motor 3 and a scraping mechanism are arranged on the top of the box body 1. The output end of the stirring motor 3 is connected to a stirring paddle 4 extending into the mixing zone 2. The scraping mechanism includes a slide rail base 12 arranged on the top of the box body 1 and used to install a screw slide rail 14. A servo motor 13 for driving the screw slide rail 14 is arranged on the slide rail base 12. A slider 15 is arranged on the screw slide rail 14. A slider 15 is fixedly connected to the bottom of the slider 15 with a slider 16 extending into the phase separation zone 18. A scraper 17 cooperating with the sedimentation plate 11 is arranged at the bottom of the slider 16.

[0037] It should be noted that an inclined settling plate and a slag discharge bucket are arranged at the bottom of the phase separation zone to ensure that the solid third phase settled in the phase separation zone is enriched on the settling plate, and the slag is regularly discharged to the slag discharge bucket by a scraping mechanism to clean the solid third phase. The special structure of the phase separation zone of the extraction tank can ensure that the scraper will not be hindered when running, and can always push the slag from the settling plate to the slag discharge bucket, which has the advantages of easy adjustment of the liquid-liquid two-phase interface and easy collection and discharge of the solid third phase, and can effectively solve the problem of solid third phase blocking the equipment and affecting the operation of the traditional box-type extraction tank; in the mixing zone near the phase separation zone, the solid third phase is easily collected and discharged. An overflow plate with an open upper portion is arranged on one side, and a limit plate with an open lower portion is arranged on the outer side of the overflow plate. The mixed liquid in the mixing zone enters the phase separation zone through the open upper portion of the overflow plate, is blocked by the limit plate before entering the phase separation zone, and enters the phase separation zone from the cavity between the overflow plate and the limit plate, which can effectively prevent the formation of vortexes and reduce the disturbance to the liquid-liquid two-phase clarification and stratification process and the solid third phase sedimentation process. The device has a wide adaptability to raw materials and can solve the problem that the traditional box-type extraction tank is not suitable for the liquid-liquid-solid three-phase extraction system; at the same time, the device can effectively adjust the horizontal height of the two-phase interface.

[0038] In this embodiment, the heavy phase overflow weir 19 includes a heavy phase collecting chamber 19-1, and a heavy phase separation tube 19-2 extending into the lower part of the phase separation zone 18 is fixedly connected to the bottom of the heavy phase collecting chamber 19-1. The heavy phase separation tube 19-2 is located in the heavy phase collecting chamber 19-1. The pipe section is externally threadedly connected to an adjusting tube 19-4. A through hole connected to the heavy phase collecting chamber 19-1 is opened on the tube wall of the adjusting tube 19-4. An adjusting connecting rod 19-3 is arranged on the top of the adjusting tube 19-4. The top of the adjusting connecting rod 19-3 extends out of the top plate of the box body 1, and a heavy phase outlet pipe 19-5 connected to the heavy phase collecting chamber 19-1 is arranged on the box body 1.

[0039] In this embodiment, the light phase overflow weir 20 includes a light phase collecting chamber 20-1, and a light phase outlet pipe 20-2 connected to the light phase collecting chamber 20-1 is arranged on the box body 1. The top of the light phase collecting chamber 20-1 and the top of the heavy phase collecting chamber 19-1 are both open structures, and the top of the heavy phase collecting chamber 19-1 is higher than the top of the light phase collecting chamber 20-1.

[0040] In this embodiment, the inclination angle of the settling plate 11 is 5° to 25°.

[0041] In this embodiment, the distance between the bottom surface of the heavy phase separation tube 19-2 and the settling plate 11 is 10 mm to 30 mm.

[0042] It should be noted that by setting a heavy phase overflow weir and a light phase overflow weir in the phase separation zone, the position of the liquid-liquid two-phase interface can be effectively adjusted. In actual use, the heavy phase located at the bottom of the phase separation zone enters the interior of the regulating tube 19-4 through the bottom of the heavy phase separation tube 19-2 separation tube, and overflows to the heavy phase collection chamber 19-1 through the through hole on the regulating tube 19-4, and then is discharged through the heavy phase outlet pipe 19-5 or enters the next-level latent chamber; when the adjusting connecting rod 19-3 is manually screwed, the adjusting tube can move straightly upward or downward in the vertical direction. At this time, the height of the through hole on the adjusting tube from the bottom of the tank body will change, that is, the pressure of the heavy phase overflowing from the through hole on the adjusting tube will change, thereby achieving the purpose of changing the position of the liquid-liquid two-phase interface.

[0043] In this embodiment, the slag discharge and washing mechanism includes a slag discharge plugging plate 24 , on which a piston rod 25 and a washing pipe 27 are provided. A cylinder 26 is provided on the top of the box body 1 , and the top of the piston rod 25 extends out of the box body 1 and cooperates with the cylinder 26 .

[0044] In this embodiment, a slag discharge pipe 22 extending out of the box body 1 is provided at the bottom of the slag discharge bucket 21 , and a slag discharge valve 23 is installed on the slag discharge pipe 22 .

[0045] In this embodiment, a discharge pipe 7 extending out of the box body 1 is provided at the bottom of the mixing zone 2 , and a discharge valve 8 is installed on the discharge pipe 7 .

[0046] In this embodiment, the screw guide rail 14 is arranged in parallel with the settling plate 11 , and the slide rod 16 is perpendicular to the screw guide rail 14 .

[0047] When the utility model is used, the light phase and the heavy phase enter the mixing zone 2 through the light phase inlet pipe 5 and the heavy phase inlet pipe 6 on the latent chamber in the mixing zone 2, and the stirring motor 3 drives the stirring paddle 4 to rotate at a high speed to generate suction force, so that the light phase and the heavy phase are fully mixed in the mixing chamber 2, and the mixed phase enters the phase separation zone 18 through the channel between the overflow plate 9 and the limit plate 10; the solid third phase carried by the liquid in the phase separation zone 18 or the solid third phase generated during the mixing process, the solid third phase will settle on the settling plate 11 with the mixing, wherein a part of the solid third phase in the mixing zone 2 will settle to the bottom and be regularly discharged and cleaned through the discharge pipe 7;

[0048] The light phase and the heavy phase in the phase separation zone 18 are clarified and separated under the action of gravity, and are separated by the light phase overflow weir and the heavy phase overflow weir in the phase separation zone, and the solid third phase will settle on the settling plate 11; part of the solid third phase settled on the settling plate 11 will accumulate on the settling plate 11, and part will naturally slide into the slag discharge bucket 21 for regular discharge and cleaning;

[0049] In the phase separation zone, the light phase is in the upper layer and the heavy phase is in the lower layer; the light phase enters the light phase collection chamber through the top of the light phase collection chamber and is discharged through the light phase outlet pipe 20-2 or enters the adjacent extraction tank; the heavy phase at the bottom of the phase separation zone enters the inside of the regulating pipe 19-4 through the bottom of the heavy phase separation pipe 19-2 separation pipe, and overflows to the inside of the heavy phase collection chamber 19-1 through the through hole on the regulating pipe 19-4, and then is discharged through the heavy phase outlet pipe 19-5 or enters the next level of the latent chamber; when the regulating connecting rod 19-3 is manually screwed, the regulating pipe can It can move linearly upward or downward in the vertical direction. At this time, the height of the through hole on the regulating tube from the bottom of the tank body will change, that is, the pressure of the overflow heavy phase of the regulating tube through hole will change, thereby achieving the purpose of changing the position of the liquid-liquid two-phase interface; when the solid third phase settled on the settling plate 11 accumulates to a certain extent, the servo motor 13 is started to drive the screw slide 14 to rotate, so that the scraper 17 moves toward the slag discharge bucket 21. During the movement of the scraper 17, the solid third phase accumulated on the settling plate 11 can be pushed into the slag discharge bucket 21;

[0050] When a certain amount of the solid third phase accumulates in the slag discharge bucket 21, the cylinder 26 is started to drive the slag discharge plugging plate 24 to move vertically downward and seal the slag discharge bucket 21, and then the slag discharge valve 23 is opened to perform the slag discharge operation, and clean water is introduced through the washing pipe 27 for cleaning.

[0051] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A liquid-liquid-solid three-phase extraction and separation device, characterized in that: The invention comprises a box body (1), a mixing zone (2) and a phase separation zone (18) arranged in the box body (1); an overflow plate (9) with an upper opening is arranged on one side of the mixing zone (2) close to the phase separation zone (18); a limit plate (10) with a lower opening is arranged outside the overflow plate (9); an inclined settling plate (11) and a slag discharge bucket (21) connected to the settling plate (11) at a lower position are arranged at the lower part of the phase separation zone (18); the settling plate (11) is connected to the bottom of the overflow plate (9) at a higher position; a heavy phase overflow weir (19), a light phase overflow weir (20) and a slag discharge washing mechanism located directly above the slag discharge bucket (21) and capable of being raised and lowered are arranged in the phase separation zone (18); a slag discharge washing mechanism connected to the mixing zone (11) is arranged on the box body (1). 2) a light phase inlet pipe (5) and a heavy phase inlet pipe (6) connected to each other, a stirring motor (3) and a scraping mechanism are arranged on the top of the box body (1), the output end of the stirring motor (3) is connected to a stirring paddle (4) extending into the mixing zone (2), the scraping mechanism comprises a slide rail base (12) arranged on the top of the box body (1) and used to install a screw slide rail (14), a servo motor (13) for driving the screw slide rail (14) is arranged on the slide rail base (12), a slider (15) is arranged on the screw slide rail (14), the bottom of the slider (15) is fixedly connected to a slider (16) extending into the phase separation zone (18), and the bottom of the slider (16) is provided with a scraper (17) cooperating with the sedimentation plate (11).

2. A liquid-liquid-solid three-phase extraction separation device according to claim 1, characterized in that: The heavy phase overflow weir (19) comprises a heavy phase collecting chamber (19-1), the bottom of which is fixedly connected with a heavy phase separation tube (19-2) extending into the lower part of the phase separation zone (18), the pipe section of the heavy phase separation tube (19-2) located in the heavy phase collecting chamber (19-1) is externally threadedly connected with an adjusting tube (19-4), a through hole communicating with the heavy phase collecting chamber (19-1) is provided on the tube wall of the adjusting tube (19-4), an adjusting connecting rod (19-3) is provided on the top of the adjusting tube (19-4), the top of the adjusting connecting rod (19-3) extends out of the top plate of the box body (1), and a heavy phase outlet pipe (19-5) communicating with the heavy phase collecting chamber (19-1) is provided on the box body (1).

3. A liquid-liquid-solid three-phase extraction separation device according to claim 2, characterized in that: The light phase overflow weir (20) comprises a light phase collection chamber (20-1), a light phase outlet pipe (20-2) connected to the light phase collection chamber (20-1) is arranged on the box body (1), the top of the light phase collection chamber (20-1) and the top of the heavy phase collection chamber (19-1) are both open structures, and the top of the heavy phase collection chamber (19-1) is higher than the top of the light phase collection chamber (20-1).

4. A liquid-liquid-solid three-phase extraction separation device according to claim 1, characterized in that: The slag discharge and washing mechanism comprises a slag discharge plugging plate (24), on which a piston rod (25) and a washing pipe (27) are arranged, and a cylinder (26) is arranged on the top of the box body (1), and the top of the piston rod (25) extends out of the box body (1) and cooperates with the cylinder (26).

5. A liquid-liquid-solid three-phase extraction separation device according to claim 1, characterized in that: A slag discharge pipe (22) extending out of the box body (1) is provided at the bottom of the slag discharge bucket (21), and a slag discharge valve (23) is installed on the slag discharge pipe (22).

6. A liquid-liquid-solid three-phase extraction separation device according to claim 1, characterized in that: A discharge pipe (7) extending out of the box body (1) is arranged at the bottom of the mixing zone (2), and a discharge valve (8) is installed on the discharge pipe (7).

7. A liquid-liquid-solid three-phase extraction separation device according to claim 1, characterized in that: The screw rod slide rail (14) is arranged in parallel with the sedimentation plate (11), and the slide rod (16) is perpendicular to the screw rod slide rail (14).

8. A liquid-liquid-solid three-phase extraction separation device according to claim 1, characterized in that: The inclination angle of the sedimentation plate (11) is 5° to 25°.

9. A liquid-liquid-solid three-phase extraction separation device according to claim 2, characterized in that: The distance between the bottom surface of the heavy phase separation tube (19-2) and the sedimentation plate (11) is 10 mm to 30 mm.

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