Extraction device

An extraction device and extraction technology, applied in the direction of liquid solution solvent extraction, etc., can solve the problems of complex internal structure, difficult internal cleaning, low efficiency, etc.

Inactive Publication Date: 2010-12-01
WENGFU (GRP) CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] Extraction is a way to achieve mass transfer between two liquid phases in the chemical industry. At present, the chemical equipment used in the extraction process in wet phosphoric acid purification is mainly as follows: multi-stage mixing-settling tank, which is a typical step-by-step contact liquid Liquid mass transfer equipment, each stage includes a mixer and a clarification tank. The main disadvantages of this equipment are: horizontally arranged multi-stage mixing-mixing tanks occupy a large area, each stage is equipped with a stirring device, and the fluid The flow between stages generally needs to be transported by pumps, and the equipment cost and operating cost are relatively large; in the sieve plate tower, the light and heavy phases flow countercurrently in the tower, and the two phases are in cross-flow contact on each tray. The mass efficiency is relatively high, but its internal structure is complex, the production cost is high...

Method used

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Experimental program
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Effect test

Embodiment 1

[0019] see figure 1 , a single-stage extraction device, including a pipeline type high-shear dispersing emulsifier 1 and a phase separation device 2 (using a phase separation tank), the emulsification machine 1 is provided with an emulsification machine inlet 3 and an emulsification machine outlet 4, and the phase separation device 2 is provided with There are mixed phase inlet 5, heavy phase outlet 6 and light phase outlet 7, of which: emulsifier inlet 3 is connected to extract inlet 8 and solvent inlet 9, and emulsifier outlet 4 is connected to mixed phase inlet 5 of phase separation equipment.

[0020] Take the extraction process in wet-process phosphoric acid purification as an example. When in use, phosphoric acid enters the emulsifier from the extractant import 8, and the extractant enters the emulsifier from the solvent import 9 through the emulsifier import 3. The extractant and phosphoric acid complete efficient mass transfer in the emulsifier 1. process, the formed m...

Embodiment 2

[0022] see figure 2 , the secondary extraction device is composed of two groups of single-stage extraction devices, the phase separation equipment (using a clarifier) ​​in the first-stage extraction device, the light phase outlet 7, is connected to the second-stage extraction device through a pipeline provided with a pump The secondary solvent inlet 17 is connected; the secondary heavy phase outlet 15 of the secondary phase separation equipment 11 in the second-stage extraction device is connected with the extracted substance inlet 8 in the first-stage extraction device through a pipeline provided with a pump.

[0023] Take the extraction process in the purification of wet-process phosphoric acid as an example, when in use: the phosphoric acid from the secondary heavy phase outlet 15 in the second-stage extraction device is imported from the extracted material in the first group of extraction devices under the action of the pump 8, The extractant enters the emulsifier 1 from ...

Embodiment 3

[0025] see image 3 , the three-stage extraction device is composed of three groups of single-stage extraction devices, the secondary light phase outlet 16 in the second-stage extraction device is connected with the third-stage solvent inlet 27 in the third-stage extraction device by a pipeline provided with a pump ; The three-stage heavy phase outlet 24 of the three-stage phase separation equipment 20 in the third-stage extraction device is connected with the secondary extracted substance inlet 17 in the secondary extraction device by a pipeline provided with a pump; all the other are the same as embodiment 2.

[0026] Taking the extraction process in the purification of wet-process phosphoric acid as an example, when in use: the phosphoric acid from the third-stage heavy phase outlet 24 in the third-stage extraction device returns to the secondary emulsifier 10 under the action of the pump, and the load solvent is separated from the secondary phase The light phase outlet of ...

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Abstract

The invention discloses an extraction device comprising an emulsifying machine (1) and a phase-splitting apparatus (2). The emulsifying machine (1) is provided with an emulsifying machine inlet (3) and an emulsifying machine outlet (4), the phase-splitting apparatus (2) is provided with a mixed phase inlet (5), a heavy phase outlet (6) and a light phase outlet (7), the emulsifying machine inlet (3) is connected with an extracted object inlet (8) and a solvent inlet (9), and the emulsifying machine outlet (4) is connected with the mixed phase inlet (5) of the phase-splitting apparatus. When multistage extraction devices are combined, the light phase outlet of the phase-splitting apparatus in the extraction device at the current level is connected with the solvent inlet of the extraction device at the next level through a pipeline provided with a pump, and the heavy phase outlet of the phase-splitting apparatus in the extraction device at the next level is connected with the extracted object inlet of the extraction device at the current level through the pipeline provided with the pump. The invention has high extraction efficiency, small size, less occupied area, simple operation and capability of saving apparatus investment and running cost.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to an extraction device. Background technique [0002] Extraction is a way to achieve mass transfer between two liquid phases in the chemical industry. At present, the chemical equipment used in the extraction process in wet phosphoric acid purification is mainly as follows: multi-stage mixing-settling tank, which is a typical step-by-step contact liquid Liquid mass transfer equipment, each stage includes a mixer and a clarification tank. The main disadvantages of this equipment are: horizontally arranged multi-stage mixing-mixing tanks occupy a large area, each stage is equipped with a stirring device, and the fluid The flow between stages generally needs to be transported by pumps, and the equipment cost and operating cost are relatively large; in the sieve plate tower, the light and heavy phases flow countercurrently in the tower, and the two phases are in cross-flow contact on ...

Claims

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Application Information

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IPC IPC(8): B01D11/04
Inventor 王邵东李红林冉瑞泉王平
Owner WENGFU (GRP) CO LTD
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