CN114712892A - A cyclone separation extraction tank - Google Patents

Abstract

The invention discloses a cyclone separation extraction tank, which belongs to a high-efficiency separation extraction device and consists of the following parts: a mixing chamber, a cyclone separation device and a clarification chamber. The organic phase and the water phase respectively enter a mixing chamber of the extraction tank from the top and the bottom of the mixing chamber, the mixed extraction process is completed under the action of mechanical stirring, the mixed liquid flows out of an overflow port at the top of the mixing chamber and enters a cyclone separation device, the intensified separation is realized through the cyclone effect and enters a clarification chamber, the complete separation is realized in the clarification chamber, and the separated water phase and the separated organic phase respectively enter a mixed extraction chamber of the previous stage and a mixed extraction chamber of the next stage to complete the countercurrent extraction process. According to the invention, the cyclone separation device is added on the basis of the traditional box-type extraction tank, so that the high-efficiency separation effect is realized, the volume ratio of the clarification chamber to the mixing chamber is reduced to 1-1.5: 1 from 3:1 of the traditional extraction tank, the problems of poor separation effect, large valuable component storage tank amount and the like in the extraction process caused by slow clarification speed are greatly reduced, and the high-efficiency extraction process is realized.

Description

A cyclone separation extraction tank

technical field

The invention discloses a cyclone separation and extraction tank, in particular to a high-efficiency separation and extraction device.

Background technique

Extraction and separation technology is a method of removing impurities by utilizing the different solubility of the extracted elements between the two phases to achieve separation. It is widely used in hydrometallurgy, chemical industry, petroleum and other industries. According to its principle, a mixing and clarifying extraction tank with simple structure and easy operation has been invented, which has become the most widely used extraction and separation equipment at home and abroad. The raw material liquid and extractant first enter the mixing chamber through their respective feeding ports, and are fully contacted and mixed by the action of the agitator, and then enter the clarification chamber through the overflow baffle, and finally separate them according to the density of the two phases.

However, in the existing extraction process, the clarification rate is not high, the phase separation effect is not obvious, and the aqueous phase and the organic phase are mixed with each other after separation, which not only causes the loss of the organic phase, but also may affect the subsequent operation. to adverse effects. In order to ensure a high clarification rate and a good separation effect between the two phases during the extraction process, many different mixing and clarification extraction tanks have been designed at home and abroad from the aspects of improving the material and internal structure of the clarification extraction tank. For example, "an extraction clarifier, application number: CN201120499593.2" proposed by Yang Bo, a baffle plate is set at the entrance of the mixed phase into the clarification chamber to enhance the separation of the two phases, so as to improve the efficiency of the extraction and separation of the organic phase and the aqueous phase In addition, a plurality of disperse phase inclined plates are set in the clarification chamber to separate it into a plurality of clarification rooms with different heights and arranged up and down in sequence. By increasing the area of the clarification chamber, the purpose of improving the clarification efficiency is achieved, but the extraction and separation process needs to be It takes a lot of clarification time, and the production efficiency still needs to be improved. Another Zhang Zengjun proposed "a high-efficiency extraction tank that can improve the extraction quality, application number: CN202022065773.1", in order to further improve the clarification effect and solve the problem of poor filterability of the extraction tank, an additional one is added to the original system. The clarification chamber is connected with a filter head between the two clarification chambers, so that the solution in the first clarification chamber enters the second clarification chamber after simple filtration, and a filter box is set in the second clarification chamber to make the solution in the second clarification chamber. The water can be filtered in multiple stages to improve the clarification effect, and finally the clarified water is discharged from the outlet pipe. Although this method greatly increases the clarification efficiency through the addition of mechanical assistance, because the extraction tank originally occupies a large area, a clarification chamber is added on the original basis, resulting in a decrease in its flexibility again.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a cyclone separation extraction tank to solve the above-mentioned problems in the prior art.

For achieving the above object, the present invention provides the following scheme:

The invention provides a cyclone separation and extraction tank, which is characterized in that, compared with the traditional box-type mixing and clarification tank, it comprises a mixing chamber, a cyclone separation device and a clarification chamber. The top of the mixing chamber is provided with an organic phase feed port, the bottom is provided with an aqueous phase feed port, and a stirring shaft and a stirring paddle blade are provided in the center of the mixing chamber. The upper part of the clarification chamber is provided with a clarification chamber overflow weir and an organic phase outlet, and the lower part is provided with an aqueous phase outlet. The cyclone separation device is inside the clarification chamber, assembled on the partition plate on one side of the mixing chamber, and communicated with the mixing chamber through the overflow port of the mixing chamber, and the top of the cyclone separation device is a light phase. The outlet, the bottom is the heavy phase outlet, and there is a cyclone separation overflow port inside.

Preferably, the mixed liquid is firstly mixed and extracted by mechanical stirring in the mixing chamber, and then flows into the cyclone separation device through the overflow port of the mixing chamber at the top of the mixing chamber. The purpose of separation is to improve the separation effect, and at the same time, the clarification rate is also greatly improved. The water phase after clarification contains less than 0.8% of the organic phase, and the amount of water mixed in the organic phase is less than 1%. In addition, the invention can also greatly reduce the volume ratio of the clarification chamber to the mixing chamber, from 3:1 of the traditional extraction tank to 1 to 1.5:1. Specifically implemented by the following programs:

Preferably, the organic phase and the water phase respectively enter the mixing chamber of the extraction tank from the organic phase feed port and the water phase feed port of the mixing chamber, and the stirring shaft is arranged in the mixing chamber and the stirring blade, the organic phase and the water phase complete the extraction process under the action of mechanical stirring, and the extracted mixed solution flows out from the overflow port of the mixing chamber at the top of the mixing chamber;

Preferably, the mixed liquid flows into the cyclone separation device from the overflow port of the mixing chamber, and under the action of the cyclone, the organic phase and the aqueous phase in the mixed liquid are further separated for enhanced separation, and then enter the clarification chamber;

Preferably, the mixed liquid after cyclone separation is completely separated in the clarification chamber, the separated upper organic phase enters the next-stage extraction mixing chamber, and the bottom aqueous phase enters the previous-stage extraction mixing chamber, thereby completing the countercurrent flow extraction process.

Compared with the prior art, the characteristics and beneficial effects of the present invention are:

The invention takes the traditional box-type mixing and clarification extraction tank as a prototype, and by adding a cyclone separation device, it overcomes the defects of slow clarification speed and low efficiency in the clarification tank only relying on the gravity of the mixed liquid in the traditional mode. After the water phase and the organic phase are mixed and extracted by mechanical stirring in the mixing chamber, they flow out through the top overflow and enter the cyclone separation device to achieve enhanced separation, greatly improve the extraction and clarification efficiency, and improve the efficiency of the entire extraction process, especially the organic phase. Separation effect from water phase;

The mixed liquid after cyclone separation is completely separated in the clarification chamber, the water content in the organic phase after separation is lower than 1%, and the organic phase in the water phase is lower than 0.8%;

After the optimization of the process, the volume of the clarification tank is greatly reduced, and the volume ratio of the clarification chamber to the mixing chamber can be reduced from 3:1 in the traditional extraction tank to 1~1.5:1.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the A-A sectional view of a kind of cyclone separation extraction tank of the present invention;

Fig. 2 is the top view of a kind of cyclone separation extraction tank of the present invention;

Wherein, 1 is the water phase feed port, 2 is the mixing chamber, 3 is the stirring paddle blade, 4 is the stirring shaft, 5 is the organic phase feed port, 6 is the mixing chamber overflow port, 7 is the cyclone separation device, 8 It is the overflow port for cyclone separation, 9 is the light phase outlet, 10 is the clarification chamber, 11 is the overflow weir of the clarification chamber, 12 is the organic phase outlet, 13 is the heavy phase outlet, and 14 is the water phase outlet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

1-2 , the present invention discloses a cyclone separation extraction tank, which includes a mixing chamber 2 , a cyclone separation device 7 and a clarification chamber 10 . The top of the mixing chamber 2 is provided with an organic phase feed port 5 , and the bottom is provided with an aqueous phase feed port 1 , and a stirring shaft 4 and a stirring paddle blade 3 are provided in the center of the mixing chamber 2 . The upper part of the clarification chamber 10 is provided with a clarification chamber overflow weir 11 and an organic phase outlet 12 , and the lower part is provided with an aqueous phase outlet 14 . The cyclone separation device 7 is inside the clarification chamber 10, is assembled on the partition plate on one side of the mixing chamber 2, and communicates with the mixing chamber 2 through the mixing chamber overflow port 6, and the cyclone separation The top of the device 7 is the light phase outlet 9, the bottom is the heavy phase outlet 13, and there is a cyclone separation overflow port 8 inside.

When the extraction process is carried out by adopting "a cyclone separation extraction tank" of the present invention, the organic phase and the aqueous phase enter the mixing chamber 2 of the extraction tank from the organic phase feed port 5 and the water phase feed port 1 of the mixing chamber 2 respectively. , a stirring shaft 4 and a stirring paddle blade 3 are arranged in the mixing chamber 2, and the mixed extraction process is completed under the action of mechanical stirring, and the mixed liquid flows out from the mixing chamber overflow port 6 at the top of the mixing chamber 2, and then enters the cyclone separation device 7 , to achieve enhanced separation under the action of cyclone, the light phase and the heavy phase enter the clarification chamber from the light phase outlet 9 and the heavy phase outlet 13 respectively, and the mixed liquid separated by the cyclone is completely separated in the clarification chamber 10. The organic phase enters the next-stage extraction mixing chamber, and the aqueous phase at the bottom enters the previous-stage extraction mixing chamber to complete the countercurrent extraction process.

The technical solutions of the present invention will be further described below with reference to specific embodiments.

Example 1

P204 with a volume fraction of 40% and 260# solvent oil with a volume fraction of 60% are extracted as the organic phase, and the fly ash sulfuric acid leaching solution is the aqueous phase. The volume ratio to the clarification chamber is 1:1, the width of the mixing chamber is 150mm, and the width of the clarification chamber is 150mm. There is a mechanical stirring device in the mixing chamber, and an overflow port is provided on the top of the mixing chamber. After mechanical stirring at 200rpm for 10min, it was passed into the cyclone separator from the overflow port at the top of the mixing chamber.

The extracted organic phase and the aqueous phase are separated under cyclone stirring to complete the enhanced separation, and then pass into the clarification chamber to complete the final separation in the clarification chamber. At this time, the clarification time of the aqueous phase and the organic phase is measured to be 2min, and the water content in the organic phase is 0.6%, the organic phase mixed in the water phase is 0.55%, and the efficiency is increased by more than 50%. The clarification chamber is provided with an organic phase outlet at the top and an aqueous phase outlet at the bottom. The clarified organic phase can enter the next mixing chamber through the organic phase outlet at the top, and the aqueous phase can enter the previous mixing chamber through the aqueous phase outlet at the bottom of the clarification chamber. stage mixing chamber to further complete the countercurrent extraction process.

Example 2

P204 with a volume fraction of 40% and 260# solvent oil with a volume fraction of 60% are extracted as the organic phase, and the fly ash sulfuric acid leaching solution is the aqueous phase. The volume ratio to the clarification chamber is 1:1.2, the width of the mixing chamber is 150mm, and the width of the clarification chamber is 180mm. There is a mechanical stirring device in the mixing chamber, and an overflow port is provided on the top of the mixing chamber. After mechanical stirring at 200rpm for 10min, it was passed into the cyclone separator from the overflow port at the top of the mixing chamber.

The extracted organic phase and the aqueous phase are separated under cyclone stirring to complete the enhanced separation, and then pass into the clarification chamber to complete the final separation in the clarification chamber. At this time, the clarification time of the aqueous phase and the organic phase is measured to be 2min, and the water content in the organic phase is 0.75%, the organic phase mixed in the water phase is 0.63%, and the efficiency is increased by more than 50%. The clarification chamber is provided with an organic phase outlet at the top and an aqueous phase outlet at the bottom. The clarified organic phase can enter the next mixing chamber through the organic phase outlet at the top, and the aqueous phase can enter the previous mixing chamber through the aqueous phase outlet at the bottom of the clarification chamber. stage mixing chamber to further complete the countercurrent extraction process.

Example 3

P204 with a volume fraction of 40% and 260# solvent oil with a volume fraction of 60% are extracted as the organic phase, and the fly ash sulfuric acid leaching solution is the aqueous phase. The volume ratio to the clarification chamber is 1:1.4, the width of the mixing chamber is 150mm, and the width of the clarification chamber is 210mm. There is a mechanical stirring device in the mixing chamber, and an overflow port is provided on the top of the mixing chamber. After mechanical stirring at 200rpm for 10min, it was passed into the cyclone separator from the overflow port at the top of the mixing chamber.

The extracted organic phase and the aqueous phase are separated under cyclone stirring to complete the enhanced separation, and then pass into the clarification chamber to complete the final separation in the clarification chamber. At this time, the clarification time of the aqueous phase and the organic phase is measured to be 2min, and the water content in the organic phase is 0.8%, the organic phase mixed in the water phase is 0.69%, and the efficiency is increased by more than 50%. The clarification chamber is provided with an organic phase outlet at the top and an aqueous phase outlet at the bottom. The clarified organic phase can enter the next mixing chamber through the organic phase outlet at the top, and the aqueous phase can enter the previous mixing chamber through the aqueous phase outlet at the bottom of the clarification chamber. stage mixing chamber to further complete the countercurrent extraction process.

Example 4

P204 with a volume fraction of 40% and 260# solvent oil with a volume fraction of 60% are extracted as the organic phase, and the fly ash sulfuric acid leaching solution is the aqueous phase. The volume ratio to the clarification chamber is 1:1.5, the width of the mixing chamber is 150mm, and the width of the clarification chamber is 225mm. There is a mechanical stirring device in the mixing chamber, and an overflow port is provided on the top of the mixing chamber. After mechanical stirring at 200rpm for 10min, it was passed into the cyclone separator from the overflow port at the top of the mixing chamber.

The extracted organic phase and the aqueous phase are separated under cyclone stirring to complete the enhanced separation, and then pass into the clarification chamber to complete the final separation in the clarification chamber. At this time, the clarification time of the aqueous phase and the organic phase is measured to be 2min, and the water content in the organic phase is 0.92%, the organic phase mixed in the water phase is 0.75%, and the efficiency is increased by more than 50%. The clarification chamber is provided with an organic phase outlet at the top and an aqueous phase outlet at the bottom. The clarified organic phase can enter the next mixing chamber through the organic phase outlet at the top, and the aqueous phase can enter the previous mixing chamber through the aqueous phase outlet at the bottom of the clarification chamber. stage mixing chamber to further complete the countercurrent extraction process.

Example 5

P204 with a volume fraction of 40% and 260# solvent oil with a volume fraction of 60% are extracted as the organic phase, and the fly ash sulfuric acid leaching solution is the aqueous phase. The volume ratio to the clarification chamber is 1:1.5, the width of the mixing chamber is 150mm, and the width of the clarification chamber is 225mm. There is a mechanical stirring device in the mixing chamber, and an overflow port is provided on the top of the mixing chamber. After mechanical stirring at 200rpm for 10min, it was passed into the cyclone separator from the overflow port at the top of the mixing chamber.

The extracted organic phase and the aqueous phase are separated under cyclone stirring to complete the enhanced separation, and then pass into the clarification chamber to complete the final separation in the clarification chamber. At this time, the clarification time of the aqueous phase and the organic phase is measured to be 2min, and the water content in the organic phase is 0.95%, the organic phase mixed in the water phase is 0.7%, and the efficiency is increased by more than 50%. The clarification chamber is provided with an organic phase outlet at the top and an aqueous phase outlet at the bottom. The clarified organic phase can enter the next mixing chamber through the organic phase outlet at the top, and the aqueous phase can enter the previous mixing chamber through the aqueous phase outlet at the bottom of the clarification chamber. stage mixing chamber to further complete the countercurrent extraction process.

In the above, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that A device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The above-mentioned embodiments are only to describe the preferred modes of the present invention, but not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. Variations and improvements should fall within the protection scope determined by the claims of the present invention.

Claims (3)

1. A cyclone separation extraction tank, characterized in that it comprises a mixing chamber (2), a cyclone separation device (7) and a clarification chamber (10), and an organic phase feed port is provided on the top of the mixing chamber (2). (5), a water-phase feeding port (1) is opened at the bottom, a stirring shaft (4) and a stirring paddle blade (3) are provided in the center of the mixing chamber (2), and a clarifying chamber (10) is provided on the upper part. Chamber overflow weir (11) and organic phase outlet (12), the lower part is provided with water phase outlet (14), the cyclone separation device (7) is inside the clarification chamber (10), and is assembled in the mixing chamber (2) On one side of the separator, and communicate with the mixing chamber (2) through the mixing chamber overflow port (6), the top of the cyclone separation device (7) is the light phase outlet (9), and the bottom is the light phase outlet (9). The heavy phase outlet (13) has a cyclone separation overflow port (8) inside. 2. The cyclone separation extraction tank according to claim 1, characterized in that: the organic phase and the water phase are respectively separated from the organic phase feed port (5) and the water phase feed port (1) of the mixing chamber (2). ) into the mixing chamber (2) of the extraction tank, and the mixed extraction process is completed under the mechanical stirring of the stirring shaft (4) and the stirring blade (3). The mixing chamber overflow port (6) flows out; the mixed liquid enters the cyclone separation device (7) from the mixing chamber overflow port (6), realizes enhanced separation through the action of cyclone, and enters the clarification chamber (10) The mixed liquid separated by the cyclone is completely separated in the clarification chamber (10), the organic phase at the upper part enters the next-stage extraction mixing chamber after separation, and the aqueous phase at the bottom enters the mixing chamber for the previous-stage extraction to complete the countercurrent flow extraction process. 3. The cyclone separation extraction tank according to claim 1, characterized in that: the cyclone separation is strengthened, and the clarification rate is greatly improved, and the volume ratio of the clarification chamber (10) to the mixing chamber (2) is changed by the traditional method. The 3:1 ratio of the extraction tank is reduced to 1~1.5:1. After clarification, the water content in the organic phase is less than 1%, and the organic phase in the aqueous phase is less than 0.8%.

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