Extraction mixed liquid phase splitting device and phosphoric acid extraction phase splitting equipment

Abstract

The utility model provides an extraction mixed liquid phase splitting device and phosphoric acid extraction phase splitting equipment. A first-stage light phase chamber is formed between the upper ring baffle and the top wall of the inner cavity of the tank body, a first-stage heavy phase chamber is formed between the lower ring baffle and the bottom wall of the inner cavity of the tank body, and a mixed phase chamber is formed between the upper ring baffle and the lower ring baffle; the liquid injection assembly is arranged in the mixed-phase chamber; the upper ring baffle is provided with a light phase passing opening, and the lower ring baffle is provided with a heavy phase passing opening. An upper ring surrounding plate is arranged on the periphery of the light-phase passing opening in an upward protruding mode, and a second-stage light-phase chamber is formed between the inner wall of the first-stage light-phase chamber and the upper ring surrounding plate; a secondary heavy phase chamber is formed between the inner wall of the primary heavy phase chamber and the lower ring coaming plate, an extracting solution in the primary heavy phase chamber can sink along the lower ring coaming plate for phase splitting, and a solvent in the primary light phase chamber can continuously float along the upper ring coaming plate for phase splitting; therefore, the solvent entrained in the extracting solution and the extracting solution entrained in the solvent are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of phosphoric acid production, and in particular to an extraction mixed liquid phase separation device and phosphoric acid extraction phase separation equipment. Background Art

[0002] In the phosphoric acid production process of phosphorus chemical industry, in order to obtain refined phosphoric acid with high concentration, it is usually necessary to extract the phosphoric acid solution. The extract is a phosphate slurry with a phosphoric acid content of 40% to 50%, and the extractant is tributyl phosphate. In order to improve the efficiency of extraction, some manufacturers have also made further research and development on the above process.

[0003] For example, Chinese patent document CN219110878U discloses a phosphoric acid extraction phase separation tank, comprising an extraction tank and a drive box fixedly connected to the top right side of the extraction tank through a fixed plate, a motor is fixedly connected to the bottom of the inner cavity of the drive box, a rotating rod passes through and is rotatably connected to the top of the drive box, the output shaft of the motor is fixedly connected to the bottom end of the rotating rod through a coupling, a connecting plate is fixedly connected between the front and rear parts of the inner cavity of the extraction tank, a rotating tube passes through and is rotatably connected to the top of the connecting plate, and three stirring sleeves are sleeved and fixedly connected on the outer surface of the rotating tube and located below the connecting plate.

[0004] However, the design of the above-mentioned phosphoric acid extraction phase separation tank has the following problems:

[0005] Although the above-mentioned phosphoric acid extraction phase separation tank can accelerate the mixing of the extract and the extractant in the extraction tank to form a phosphoric acid extraction mixed liquid by stirring with a stirring sleeve, since the phosphoric acid extraction mixed liquid needs to be phase-separated to obtain an extract and a solvent, phosphoric acid is enriched in the extract. However, by simply separating the phases, it is easy for a large amount of solvent to be entrained in the extract, thereby increasing the burden of the subsequent phosphoric acid concentration and purification process. At the same time, a large amount of extract is also easily entrained in the solvent, and the solvent is usually discharged for treatment, which will cause a large amount of phosphoric acid waste. Utility Model Content

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an extraction mixed liquid phase separation device and a phosphoric acid extraction phase separation device with good phase separation effect and high phosphoric acid extraction purity.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] An extraction mixed liquid phase separation device comprises a tank body, a liquid injection assembly, an upper ring baffle and a lower ring baffle;

[0009] The upper ring baffle and the lower ring baffle are sequentially arranged on the inner cavity wall of the tank body from top to bottom; a primary light phase chamber is formed between the upper ring baffle and the inner cavity top wall of the tank body, a primary heavy phase chamber is formed between the lower ring baffle and the inner cavity bottom wall of the tank body, and a mixed phase chamber is formed between the upper ring baffle and the lower ring baffle; the injection assembly is arranged in the mixed phase chamber, the liquid inlet pipe of the injection assembly extends out of the tank body, and the liquid outlet hole of the injection assembly is connected to the mixed phase chamber;

[0010] The upper annular baffle is provided with a light phase outlet, and the lower annular baffle is provided with a heavy phase outlet, and the first-level light phase chamber, the light phase outlet, the mixed phase chamber, the heavy phase outlet and the first-level heavy phase chamber are connected in sequence; an upper annular enclosure plate is protruded upward from the periphery of the light phase outlet, and a second-level light phase chamber is formed between the inner wall of the first-level light phase chamber and the upper annular enclosure plate; a lower annular enclosure plate is protruded downward from the periphery of the heavy phase outlet, and a second-level heavy phase chamber is formed between the inner wall of the first-level heavy phase chamber and the lower annular enclosure plate; a light phase outlet and a heavy phase outlet are provided on the outer side of the tank body, and the light phase outlet is close to and connected to the second-level light phase chamber, and the heavy phase outlet is close to and connected to the second-level heavy phase chamber.

[0011] In one of the embodiments, the lower ring baffle is inclined to the bottom wall of the inner cavity of the tank body, and a high-position through hole is opened at a position away from the bottom wall of the inner cavity of the tank body; the secondary heavy phase chamber is connected to the mixed phase chamber through the high-position through hole.

[0012] In one of the embodiments, the inclination angle of the lower ring baffle is in the range of 15° to 25°.

[0013] In one embodiment, the extraction mixed liquid phase separation device further includes a scraper assembly;

[0014] The scraper assembly includes a rotary drive, a transmission shaft and a scraper; the rotary drive is arranged on the top of the tank body; the scraper is slidably arranged on the bottom wall of the inner cavity of the tank body and is connected to a sewage pipe; the transmission shaft is vertically arranged in the mixed phase chamber; the top end of the transmission shaft passes through the light phase port and the first-level light phase chamber in sequence, and is connected to the power output end of the rotary drive; the bottom end of the transmission shaft passes through the heavy phase port and the first-level heavy phase chamber in sequence, and is connected to the scraper.

[0015] In one embodiment, the injection assembly includes a distribution cylinder, a liquid separation orifice plate and a liquid inlet pipe; the distribution cylinder is sleeved on the outside of the transmission shaft, the liquid separation orifice plate is embedded in the distribution cylinder, and the transmission shaft is respectively passed through and rotatably connected to the two ends of the distribution cylinder and the middle part of the liquid separation orifice plate; a dispersion lower chamber is formed between the liquid separation orifice plate and the lower end of the distribution cylinder, and a dispersion upper chamber is formed between the liquid separation orifice plate and the upper end of the distribution cylinder, and the dispersion lower chamber is connected to the dispersion upper chamber through the liquid separation hole of the liquid separation orifice plate; the liquid inlet pipe is arranged on the outside of the distribution cylinder, and the outlet end of the liquid inlet pipe is connected to the dispersion lower chamber; the inlet end of the liquid inlet pipe passes through the inner wall of the mixed phase chamber and extends to the outside of the tank body; the liquid outlet hole is opened on the peripheral wall of the dispersion upper chamber.

[0016] In one embodiment, there are two liquid separation orifice plates, and a buffer gap is provided between the two liquid separation orifice plates; the liquid separation holes of the two liquid separation orifice plates are staggered and respectively connected to the buffer gaps.

[0017] In one embodiment, there are a plurality of liquid outlet holes, and the plurality of liquid outlet holes are evenly spaced and distributed along the peripheral wall of the dispersion upper cavity.

[0018] In one of the embodiments, a transverse rod and a longitudinal rod perpendicular to each other are provided at the bottom end of the transmission shaft, and two ends of the scraper are respectively connected to the end of the transverse rod and the end of the longitudinal rod.

[0019] A heavy phase outlet pipe is also provided outside the tank body, and the heavy phase outlet pipe includes an inlet portion, a U-shaped portion and an outlet portion which are connected in sequence; the inlet portion is connected to the heavy phase outlet, and the height of the U-shaped portion is greater than the height of the lower ring baffle.

[0020] A phosphoric acid extraction phase separation device, comprising a phosphoric acid mixed extraction device and an extraction mixed liquid phase separation device according to any one of the above embodiments;

[0021] The phosphoric acid mixed extraction device is provided with an extracting liquid inlet pipe and an extracting agent inlet pipe, and the liquid outlet pipe of the phosphoric acid mixed extraction device is connected to the liquid inlet pipe of the liquid injection component.

[0022] Compared with the prior art, the present invention has at least the following advantages:

[0023] 1) When the phosphoric acid extraction mixed liquid enters the mixed phase chamber through the liquid inlet pipe and the liquid outlet hole of the injection assembly in sequence, because the first light phase chamber is formed between the upper ring baffle and the inner cavity top wall of the tank body, and the first heavy phase chamber is formed between the lower ring baffle and the inner cavity bottom wall of the tank body, the first light phase chamber, the light phase port, the mixed phase chamber, the heavy phase port and the first heavy phase chamber are connected in sequence, so that the extraction mixed liquid entering the mixed phase chamber will be phase-separated into an extract and a solvent under the action of gravity. Since the density of the solvent is less than that of the extract, the solvent will float up and enter the first light phase chamber from the light phase port, while the extract will sink and enter the first heavy phase chamber from the heavy phase port. Because the periphery of the light phase outlet is protruding upward with an upper annular plate, the solvent will further float along the upper annular plate to the top wall of the inner cavity of the tank body, separate into phases and gather in the secondary light phase chamber, and finally be discharged through the light phase outlet, while the periphery of the heavy phase outlet is protruding downward with a lower annular plate, so that the extract will further sink along the lower annular plate to the bottom wall of the inner cavity of the tank body, separate into phases and gather in the secondary heavy phase chamber, and finally be discharged through the heavy phase outlet.

[0024] 2) Compared with the phosphoric acid extraction phase separation tank of the prior art, the extraction mixed liquid phase separation device disclosed in the present invention, since the extract in the first heavy phase chamber will continue to sink along the lower annular plate, the extract will be further phase-separated under the action of gravity during the sinking process, and then will enter the second heavy phase chamber, so that the solvent entrained in the extract in the second heavy phase chamber will be less, thereby reducing the burden of the subsequent phosphoric acid concentration and purification process. At the same time, since the solvent in the first light phase chamber will continue to float along the upper annular plate, the solvent will be further phase-separated under the action of gravity during the floating process, and then will enter the second light phase chamber, so that the extract entrained in the solvent in the second light phase chamber will be less, thereby reducing the waste of phosphoric acid when the solvent is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A cross-sectional view of a first viewing angle of an extraction mixed liquid phase separation device according to an embodiment of the present disclosure;

[0027] Figure 2 for Figure 1 A cross-sectional view of the extraction mixed liquid phase separation device from a second perspective;

[0028] Figure 3 for Figure 2 A partial enlarged view shown in the middle A;

[0029] Figure 4 It is a schematic structural diagram of a phosphoric acid extraction phase separation device according to another embodiment of the present disclosure.

[0030] Figure numerals: 10, phosphoric acid extraction phase separation equipment; 100, extraction mixed liquid phase separation device; 110, tank; 1111, light phase outlet; 1112, heavy phase outlet; 1113, sewage pipe; 11a, primary light phase chamber; 111a, secondary light phase chamber; 11b, mixed phase chamber; 11c, primary heavy phase chamber; 111c, secondary heavy phase chamber; 120, liquid injection assembly; 1210, distribution cylinder; 121a, dispersion lower chamber; 121b, dispersion upper chamber; 121c, liquid outlet; 1220, liquid separation orifice plate; 122a, buffer gap; 122b, liquid separation hole; 1230, liquid inlet pipe ; 130, upper annular baffle; 1310, light phase port; 1311, upper annular enclosure plate; 140, lower annular baffle; 1410, heavy phase port; 1411, lower annular enclosure plate; 1420, high-position through hole; 150, scraper assembly; 1510, rotary driver; 1520, transmission shaft; 1521, transverse rod; 1522, longitudinal rod; 1530, scraper; 160, heavy phase outlet pipe; 1610, inlet portion; 1620, U-shaped portion; 1630, outlet portion; 200, phosphoric acid mixed extraction device; 210, extractant inlet pipe; 220, extractant inlet pipe; 230, liquid outlet pipe. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0035] like Figure 1 and Figure 2 As shown, an extraction mixed liquid phase separation device 100 of an embodiment includes a tank body 110, a liquid injection assembly 120, an upper ring baffle 130 and a lower ring baffle 140; the upper ring baffle 130 and the lower ring baffle 140 are sequentially arranged on the inner cavity wall of the tank body 110 from top to bottom; a primary light phase chamber 11a is formed between the upper ring baffle 130 and the inner cavity top wall of the tank body 110, a primary heavy phase chamber 11c is formed between the lower ring baffle 140 and the inner cavity bottom wall of the tank body 110, and a mixed phase chamber 11b is formed between the upper ring baffle 130 and the lower ring baffle 140; the liquid injection assembly 120 is arranged in the mixed phase chamber 11b, the liquid inlet pipe 1230 of the liquid injection assembly 120 extends out of the tank body 110, and the liquid outlet 121c of the liquid injection assembly 120 is connected to the mixed phase chamber 11b; the upper ring baffle 130 is provided with a light phase outlet 131 0, the lower annular baffle 140 is provided with a heavy phase port 1410, and the first-level light phase chamber 11a, the light phase port 1310, the mixed phase chamber 11b, the heavy phase port 1410 and the first-level heavy phase chamber 11c are connected in sequence; the periphery of the light phase port 1310 is provided with an upper annular plate 1311 protruding upward, and a second-level light phase chamber 111a is formed between the inner wall of the first-level light phase chamber 11a and the upper annular plate 1311; the periphery of the heavy phase port 1410 is provided with a lower annular plate 1411 protruding downward, and a second-level heavy phase chamber 111c is formed between the inner wall of the first-level heavy phase chamber 11c and the lower annular plate 1411; the outer side of the tank body 110 is provided with a heavy phase outlet 1112 and a light phase outlet 1111, the light phase outlet 1111 is close to and connected to the second-level light phase chamber 111a, and the heavy phase outlet 1112 is close to and connected to the second-level heavy phase chamber 111c.

[0036] It can be understood that when the phosphoric acid extraction mixed liquid enters the mixed phase chamber 11b through the liquid inlet pipe 1230 and the liquid outlet hole 121c of the injection component 120 in sequence, because the first-level light phase chamber 11a is formed between the upper annular baffle 130 and the inner cavity top wall of the tank body 110, and the first-level heavy phase chamber 11c is formed between the lower annular baffle 140 and the inner cavity bottom wall of the tank body 110, the first-level light phase chamber 11a, the light phase port 1310, the mixed phase chamber 11b, the heavy phase port 1410 and the first-level heavy phase chamber 11c are connected in sequence, so that the extraction mixed liquid entering the mixed phase chamber 11b will be phase-separated into an extract and a solvent under the action of gravity. Since the density of the solvent is less than that of the extract, the solvent will float up and enter the first-level light phase chamber 11a from the light phase port 1310, while the extract will sink and enter the first-level heavy phase chamber 11c from the heavy phase port 1410. Because the light phase outlet 1310 is provided with an upper annular plate 1311 protruding upward on the periphery thereof, the solvent will further float along the upper annular plate 1311 toward the top wall of the inner cavity of the tank body 110 to separate into phases and gather in the secondary light phase chamber 111a, and finally be discharged through the light phase outlet 1111, while the heavy phase outlet 1410 is provided with a lower annular plate 1411 protruding downward on the periphery thereof, so that the extract will further sink along the lower annular plate 1411 toward the bottom wall of the inner cavity of the tank body 110 to separate into phases and gather in the secondary heavy phase chamber 111c, and finally be discharged through the heavy phase outlet 1112.

[0037] It can be understood that compared with the phosphoric acid extraction phase separation tank of the prior art, the extraction mixed liquid phase separation device 100 of the present embodiment, because the extract in the first-level heavy phase chamber 11c will continue to sink along the lower ring plate 1411, the extract will be further phase-separated under the action of gravity during the sinking process, and then will enter the second-level heavy phase chamber 111c, so that the solvent entrained in the extract in the second-level heavy phase chamber 111c will be less, thereby reducing the burden of the subsequent phosphoric acid concentration and purification process. At the same time, because the solvent in the first-level light phase chamber 11a will continue to float along the upper ring plate 1311, the solvent will be further phase-separated under the action of gravity during the floating process, and then will enter the second-level light phase chamber 111a, so that the extract entrained in the solvent in the second-level light phase chamber 111a will be less, thereby reducing the waste of phosphoric acid when the solvent is discharged.

[0038] Combination Figure 1As shown, in this embodiment, the lower ring baffle 140 is inclined to the inner cavity bottom wall of the tank body 110, and a high-position through hole 1420 is opened at a position away from the inner cavity bottom wall of the tank body 110; the secondary heavy phase chamber 111c is connected to the mixed phase chamber 11b through the high-position through hole 1420. It can be understood that the extract in the secondary heavy phase chamber 111c will continue to separate under the action of gravity, and the solvent entrained in the extract will float up to the lower ring baffle 140. By making the lower ring baffle 140 inclined to the inner cavity bottom wall of the tank body 110 and opening the high-position through hole 1420 at a position away from the inner cavity bottom wall of the tank body 110, the solvent is forced to accelerate and float up along the inclined direction of the lower ring baffle 140 to the position where the lower ring baffle 140 is away from the inner cavity bottom wall of the tank body 110, and return to the mixed phase chamber 11b through the high-position through hole 1420.

[0039] Combination Figure 1 As shown, specifically, the inclination angle a of the lower ring baffle 140 is in the range of 15° to 25°. It can be understood that by setting the inclination angle a of the lower ring baffle 140 in the range of 15° to 25°, it is possible to avoid the inclination angle a of the lower ring baffle 140 being too large, so that the density of the solvent near the high-position through hole 1420 of the lower ring baffle 140 is less than the density of the phosphoric acid extraction mixed solution in the mixing chamber, and the phosphoric acid extraction mixed solution will easily enter the secondary heavy phase chamber 111c from the high-position through hole 1420 in the reverse direction, thereby preventing the solvent from returning to the mixed phase chamber 11b. At the same time, it can also avoid the inclination angle a of the lower ring baffle 140 being too small, which can fail to achieve the effect of accelerating the floating of the solvent. Among them, the inclination angle a of the lower ring baffle 140 can be 15°, 20° or 25°, which is not limited here.

[0040] Combination Figure 2As shown, in one embodiment, the extraction mixed liquid phase separation device 100 also includes a scraper assembly 150; the scraper assembly 150 includes a rotary driver 1510, a transmission shaft 1520 and a scraper 1530; the rotary driver 1510 is arranged on the top of the tank body 110; the scraper 1530 is slidably arranged on the bottom wall of the inner cavity of the tank body 110, and is connected to the sewage pipe 1113; the transmission shaft 1520 is vertically arranged in the mixed phase chamber 11b; the top end of the transmission shaft 1520 passes through the light phase port 1310 and the first light phase chamber 11a in sequence, and is connected to the power output end of the rotary driver 1510; the bottom end of the transmission shaft 1520 passes through the heavy phase port 1410 and the first heavy phase chamber 11c in sequence, and is connected to the scraper 1530. It can be understood that, since the top of the transmission shaft 1520 is connected to the power output end of the rotary driver 1510 through the light phase port 1310 and the first light phase chamber 11a in sequence, and the bottom of the transmission shaft 1520 is connected to the scraper 1530 through the heavy phase port 1410 and the first heavy phase chamber 11c in sequence, the scraper 1530 can be driven to rotate by the rotary driver 1510, and since the scraper 1530 is slidably arranged on the inner cavity bottom wall of the tank body 110, and the inner cavity bottom wall of the tank body 110 is connected to the sewage pipe 1113, the scraper 1530 can scrape off the sedimentation particles on the inner cavity bottom wall of the tank body 110, and the sedimentation particles will be discharged through the sewage pipe 1113. Among them, the rotation speed of the transmission shaft 1520 is in the range of 0.025r / min to 0.5r / min, so as to avoid stirring and disturbing the phase separation process of the phosphoric acid extraction mixture.

[0041] Combination Figure 2 and Figure 3As shown, in this embodiment, the injection assembly 120 includes a distribution cylinder 1210, a liquid separation orifice plate 1220 and a liquid inlet pipe 1230; the distribution cylinder 1210 is sleeved outside the transmission shaft 1520, the liquid separation orifice plate 1220 is embedded in the distribution cylinder 1210, and the transmission shaft 1520 is respectively penetrated and rotatably connected to the two ends of the distribution cylinder 1210 and the middle of the liquid separation orifice plate 1220; a dispersion lower cavity 121a is formed between the liquid separation orifice plate 1220 and the lower end of the distribution cylinder 1210, and the liquid separation orifice plate 1220 A dispersion upper chamber 121b is formed between the upper end of the distribution cylinder 1210, and the dispersion lower chamber 121a is connected to the dispersion upper chamber 121b through the liquid separation hole 122b of the liquid separation orifice plate 1220; the liquid inlet pipe 1230 is arranged on the outside of the distribution cylinder 1210, and the outlet end of the liquid inlet pipe 1230 is connected to the dispersion lower chamber 121a; the inlet end of the liquid inlet pipe 1230 passes through the inner wall of the mixed chamber 11b and extends to the outside of the tank body 110; the liquid outlet hole 121c is opened on the peripheral wall of the dispersion upper chamber 121b. It can be understood that, since the outlet end of the liquid inlet pipe 1230 is connected to the dispersion lower chamber 121a, the dispersion lower chamber 121a is connected to the dispersion upper chamber 121b through the liquid separation hole 122b of the liquid separation orifice plate 1220, and the liquid outlet hole 121c is opened on the peripheral wall of the dispersion upper chamber 121b, the phosphoric acid extraction mixed liquid will first enter the dispersion lower chamber 121a through the liquid inlet pipe 1230, and then disperse through the liquid separation hole 122b of the liquid separation orifice plate 1220 and enter the dispersion upper chamber 121b, and finally disperse to the peripheral side of the dispersion upper chamber 121b and the mixed phase chamber through the liquid outlet hole 121c, which can avoid the phosphoric acid extraction mixed liquid entering from the liquid inlet pipe 1230 directly falling to the bottom of the phase separation cylinder due to gravity, resulting in insufficient phase separation. Among them, the two ends of the distribution cylinder 1210 and the middle part of the liquid separation orifice plate 1220 can be connected to the transmission shaft 1520 through ball bearings respectively, which is not limited here.

[0042] Combination Figure 3 As shown, specifically, there are two liquid separation orifice plates 1220, and a buffer gap 122a is provided between the two liquid separation orifice plates 1220; the liquid separation holes 122b of the two liquid separation orifice plates 1220 are staggered and respectively connected to the buffer gap 122a. It can be understood that by providing two liquid separation orifice plates 1220, the phosphoric acid extraction mixed solution will first be dispersed into the buffer gap 122a through the liquid separation holes 122b of one liquid separation orifice plate 1220. Since the liquid separation holes 122b of the two liquid separation orifice plates 1220 are staggered, when the phosphoric acid extraction mixed solution passes through the liquid separation holes 122b of the other liquid separation orifice plate 1220, the flow rate of the phosphoric acid extraction mixed solution will be further slowed down, thereby further preventing the phosphoric acid extraction mixed solution from directly falling to the bottom of the phase separation cylinder, and ultimately improving the phase separation effect of the phosphoric acid extraction mixed solution.

[0043] Combination Figure 3As shown, in this embodiment, the number of the liquid outlet holes 121c is a plurality, and the plurality of liquid outlet holes 121c are evenly spaced and distributed along the peripheral wall of the upper dispersion chamber 121b. It can be understood that, since the plurality of liquid outlet holes 121c are spaced and distributed along the peripheral wall of the upper dispersion chamber 121b, the phosphoric acid extraction mixed liquid in the upper dispersion chamber 121b can be evenly dispersed in the circumferential direction of the upper dispersion chamber 121b, so that the phosphoric acid extraction mixed liquid is evenly distributed in the mixed phase chamber, thereby synchronizing the phase separation efficiency of each part of the phosphoric acid extraction mixed liquid.

[0044] In one embodiment, the bottom end of the transmission shaft 1520 is provided with a transverse rod 1521 and a longitudinal rod 1522 perpendicular to each other, and the two ends of the scraper 1530 are respectively connected to the ends of the transverse rod 1521 and the ends of the longitudinal rod 1522. It can be understood that by connecting the two ends of the scraper 1530 to the ends of the transverse rod 1521 and the ends of the longitudinal rod 1522, the scraper 1530, the transverse rod 1521 and the longitudinal rod 1522 form a stable triangular structure, so that the sediment particles on the bottom wall of the inner cavity of the tank body 110 can be scraped off more stably.

[0045] Combination Figure 1 As shown, in one embodiment, a heavy phase outlet pipe 160 is further provided on the outside of the tank body 110, and the heavy phase outlet pipe 160 includes an inlet portion 1610, a U-shaped portion 1620 and an outlet portion 1630 which are connected in sequence; the inlet portion 1610 is connected to the heavy phase outlet 1112, and the height of the U-shaped portion 1620 is greater than the height of the lower ring baffle 140. It can be understood that by connecting the inlet portion 1610 of the heavy phase outlet pipe 160 to the heavy phase outlet 1112, the extract can be discharged to the outlet 1630 through the inlet portion 1610 and the U-shaped portion 1620 in sequence. Since the height of the U-shaped portion 1620 is greater than the height of the lower annular baffle 140, when the liquid level of the phosphoric acid extraction mixture in the tank body 110 is lower than the highest point of the lower annular baffle 140, the highest point of the U-shaped portion 1620 will be able to cut off the flow, thereby preventing the tank body 110 from being emptied due to misoperation, that is, avoiding the solvent separated from the phosphoric acid extraction mixture from being mistakenly discharged from the heavy phase outlet 1112.

[0046] Combination Figure 2 and Figure 4As shown, the present disclosure also provides a phosphoric acid extraction phase separation device 10 including a phosphoric acid mixed extraction device 200 and an extraction mixed liquid phase separation device 100 of any of the above embodiments; the phosphoric acid mixed extraction device 200 is provided with an extraction liquid inlet pipe 210 and an extractant inlet pipe 220, and the liquid outlet pipe 230 of the phosphoric acid mixed extraction device 200 is connected to the liquid inlet pipe 1230 of the injection assembly 120. It can be understood that when in use, phosphate slurry can be injected into the phosphoric acid mixed extraction device 200 through the extractant inlet pipe 210, and tributyl phosphate can be injected into the phosphoric acid mixed extraction device 200 through the extractant inlet pipe 220, so that the tributyl phosphate and the phosphate slurry are mixed in the phosphoric acid mixed extraction device 200 to form a phosphoric acid extraction mixed liquid. Because the liquid outlet pipe 230 of the phosphoric acid mixed extraction device 200 is connected to the liquid inlet pipe 1230 of the injection component 120, the phosphoric acid extraction mixed liquid can enter the tank body 110 through the liquid inlet pipe 1230 of the injection component 120 for subsequent phase separation process, so that the phosphoric acid extraction phase separation device 10 of this embodiment can simultaneously perform the two processes of phosphoric acid extraction and phase separation, and is more convenient to use.

[0047] In one embodiment, for better explanation, the use process of the extraction mixed liquid phase separation device 100 of the above embodiment is described as follows:

[0048] The phosphoric acid extraction mixture is injected into the liquid inlet pipe 1230, and the phosphoric acid extraction mixture enters the mixed phase chamber 11b through the liquid outlet 121c. The phosphoric acid extraction mixture is phase-separated into an extract and a solvent under the action of gravity. Since the density of the solvent is less than that of the extract, the solvent will float up and enter the primary light phase chamber 11a from the light phase port 1310, while the extract will sink and enter the primary heavy phase chamber 11c from the heavy phase port 1410. The solvent further floats along the upper annular plate 1311 toward the top wall of the inner cavity of the tank body 110 to separate into phases and gather in the secondary light phase chamber 111a and be discharged through the light phase outlet 1111. The extract further sinks along the lower annular plate 1411 toward the bottom wall of the inner cavity of the tank body 110 to separate into phases and gather in the secondary heavy phase chamber 111c and be discharged through the heavy phase outlet 1112.

[0049] Compared with the prior art, the present invention has at least the following advantages:

[0050] 1) When the phosphoric acid extraction mixed solution sequentially passes through the liquid inlet pipe 1230 and the liquid outlet hole 121c of the liquid injection assembly 120 and enters the mixed phase chamber 11b, because the first-stage light phase chamber 11a is formed between the upper annular baffle 130 and the inner cavity top wall of the tank body 110, and the first-stage heavy phase chamber 11c is formed between the lower annular baffle 140 and the inner cavity bottom wall of the tank body 110, the first-stage light phase chamber 11a, the light phase port 1310, the mixed phase chamber 11b, the heavy phase port 1410 and the first-stage heavy phase chamber 11c are sequentially connected, so that the extraction mixed solution entering the mixed phase chamber 11b will be phase-separated into an extract and a solvent under the action of gravity. Since the density of the solvent is less than that of the extract, the solvent will float up and enter the first-stage light phase chamber 11a from the light phase port 1310, while the extract will sink and enter the first-stage heavy phase chamber 11c from the heavy phase port 1410. Because the light phase outlet 1310 is provided with an upper annular plate 1311 protruding upward on the periphery thereof, the solvent will further float along the upper annular plate 1311 toward the top wall of the inner cavity of the tank body 110 to separate into phases and gather in the secondary light phase chamber 111a, and finally be discharged through the light phase outlet 1111, while the heavy phase outlet 1410 is provided with a lower annular plate 1411 protruding downward on the periphery thereof, so that the extract will further sink along the lower annular plate 1411 toward the bottom wall of the inner cavity of the tank body 110 to separate into phases and gather in the secondary heavy phase chamber 111c, and finally be discharged through the heavy phase outlet 1112.

[0051] 2) Compared with the phosphoric acid extraction phase separation tank of the prior art, the extraction mixed liquid phase separation device 100 disclosed in the present invention, because the extract in the first-level heavy phase chamber 11c will continue to sink along the lower annular plate 1411, the extract will be further phase-separated under the action of gravity during the sinking process, and then will enter the second-level heavy phase chamber 111c, so that the solvent entrained in the extract in the second-level heavy phase chamber 111c will be less, thereby reducing the burden of the subsequent phosphoric acid concentration and purification process. At the same time, because the solvent in the first-level light phase chamber 11a will continue to float along the upper annular plate 1311, the solvent will be further phase-separated under the action of gravity during the floating process, and then will enter the second-level light phase chamber 111a, so that the extract entrained in the solvent in the second-level light phase chamber 111a will be less, thereby reducing the waste of phosphoric acid when the solvent is discharged.

[0052] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. 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 present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. An extraction mixed liquid phase separation device (100), characterized in that: It comprises a tank body (110), a liquid injection assembly (120), an upper ring baffle (130) and a lower ring baffle (140); The upper ring baffle (130) and the lower ring baffle (140) are sequentially arranged on the inner cavity wall of the tank body (110) from top to bottom; a primary light phase chamber (11a) is formed between the upper ring baffle (130) and the inner cavity top wall of the tank body (110), a primary heavy phase chamber (11c) is formed between the lower ring baffle (140) and the inner cavity bottom wall of the tank body (110), and a mixed phase chamber (11b) is formed between the upper ring baffle (130) and the lower ring baffle (140); the liquid injection assembly (120) is arranged in the mixed phase chamber (11b), the liquid inlet pipe (1230) of the liquid injection assembly (120) extends out of the tank body (110), and the liquid outlet hole (121c) of the liquid injection assembly (120) is connected to the mixed phase chamber (11b); The upper annular baffle (130) is provided with a light phase port (1310), the lower annular baffle (140) is provided with a heavy phase port (1410), the primary light phase chamber (11a), the light phase port (1310), the mixed phase chamber (11b), the heavy phase port (1410) and the primary heavy phase chamber (11c) are sequentially connected; an upper annular plate (1311) is protruding upward from the periphery of the light phase port (1310), and a secondary light phase chamber (11a) is formed between the inner wall of the primary light phase chamber (11a) and the upper annular plate (1311). chamber (111a); a lower annular plate (1411) is protruding downwardly from the periphery of the heavy phase outlet (1410), and a secondary heavy phase chamber (111c) is formed between the inner wall of the primary heavy phase chamber (11c) and the lower annular plate (1411); a light phase outlet (1111) and a heavy phase outlet (1112) are provided on the outer side of the tank body (110), the light phase outlet (1111) is close to and connected to the secondary light phase chamber (111a), and the heavy phase outlet (1112) is close to and connected to the secondary heavy phase chamber (111c).

2. The extraction mixed liquid phase separation device (100) according to claim 1, characterized in that: The lower ring baffle (140) is inclined at the bottom wall of the inner cavity of the tank body (110), and a high-position through hole (1420) is provided at a position away from the bottom wall of the inner cavity of the tank body (110); the secondary heavy phase chamber (111c) is connected to the mixed phase chamber (11b) through the high-position through hole (1420).

3. The extraction mixed liquid phase separation device (100) according to claim 2, characterized in that: The inclination angle of the lower ring baffle (140) is in the range of 15° to 25°.

4. The extraction mixed liquid phase separation device (100) according to claim 1, characterized in that: The extraction mixed liquid phase separation device (100) further comprises a scraper assembly (150); The scraper assembly (150) comprises a rotary driver (1510), a transmission shaft (1520) and a scraper (1530); the rotary driver (1510) is arranged at the top of the tank body (110); the scraper (1530) is slidably arranged on the bottom wall of the inner cavity of the tank body (110) and is connected to a sewage discharge pipe (1113); the transmission shaft (1520) is vertically arranged in the mixed phase chamber (11b); the top end of the transmission shaft (1520) passes through the light phase port (1310) and the first-level light phase chamber (11a) in sequence, and is connected to the power output end of the rotary driver (1510); the bottom end of the transmission shaft (1520) passes through the heavy phase port (1410) and the first-level heavy phase chamber (11c) in sequence, and is connected to the scraper (1530).

5. The extraction mixed liquid phase separation device (100) according to claim 4, characterized in that: The liquid injection assembly (120) comprises a distribution cylinder (1210), a liquid separation orifice plate (1220) and a liquid inlet pipe (1230); the distribution cylinder (1210) is sleeved outside the transmission shaft (1520), the liquid separation orifice plate (1220) is embedded in the distribution cylinder (1210), and the transmission shaft (1520) is respectively passed through and rotatably connected to the two ends of the distribution cylinder (1210) and the middle part of the liquid separation orifice plate (1220); a dispersion lower cavity (121a) is formed between the liquid separation orifice plate (1220) and the lower end of the distribution cylinder (1210), and the liquid separation orifice plate (1220) and the distribution cylinder (1230) are connected to each other. A dispersion upper chamber (121b) is formed between the upper ends of the distribution cylinder (1210), and the dispersion lower chamber (121a) is connected to the dispersion upper chamber (121b) through the liquid separation hole (122b) of the liquid separation orifice plate (1220); the liquid inlet pipe (1230) is arranged on the outer side of the distribution cylinder (1210), and the outlet end of the liquid inlet pipe (1230) is connected to the dispersion lower chamber (121a); ​​the inlet end of the liquid inlet pipe (1230) passes through the inner wall of the mixed phase chamber (11b) and extends to the outside of the tank body (110); the liquid outlet hole (121c) is opened on the peripheral wall of the dispersion upper chamber (121b).

6. The extraction mixed liquid phase separation device (100) according to claim 5, characterized in that: The number of the liquid separation orifice plates (1220) is two, and a buffer gap (122a) is provided between the two liquid separation orifice plates (1220); the liquid separation holes (122b) of the two liquid separation orifice plates (1220) are staggered and respectively connected to the buffer gaps (122a).

7. The extraction mixed liquid phase separation device (100) according to claim 5, characterized in that: The number of the liquid outlet holes (121c) is a plurality, and the plurality of liquid outlet holes (121c) are evenly spaced and distributed along the peripheral wall of the dispersion upper chamber (121b).

8. The extraction mixed liquid phase separation device (100) according to claim 4, characterized in that: The bottom end of the transmission shaft (1520) is provided with a transverse rod (1521) and a longitudinal rod (1522) which are perpendicular to each other, and the two ends of the scraper (1530) are respectively connected to the end of the transverse rod (1521) and the end of the longitudinal rod (1522).

9. The extraction mixed liquid phase separation device (100) according to claim 1, characterized in that: A heavy phase outlet pipe (160) is also provided on the outside of the tank body (110), and the heavy phase outlet pipe (160) includes an inlet portion (1610), a U-shaped portion (1620) and an outlet portion (1630) which are connected in sequence; the inlet portion (1610) is connected to the heavy phase outlet (1112), and the height of the U-shaped portion (1620) is greater than the height of the lower ring baffle (140).

10. A phosphoric acid extraction phase separation device (10), characterized in that: It comprises a phosphoric acid mixed extraction device (200) and an extraction mixed liquid phase separation device (100) according to any one of claims 1 to 9; The phosphoric acid mixed extraction device (200) is provided with an extracting liquid inlet pipe (210) and an extracting agent inlet pipe (220), and the liquid outlet pipe (230) of the phosphoric acid mixed extraction device (200) is connected to the liquid inlet pipe (1230) of the liquid injection component (120).

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