Stripping device

A stripping agent and phase separation technology, applied in liquid solution solvent extraction, etc., can solve the problems of complex internal structure, difficult internal cleaning, low efficiency, etc.

Active Publication Date: 2010-12-01
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Extraction and stripping is a way to achieve mass transfer between two liquid phases in the chemical industry. At present, the chemical equipment used for extraction and stripping is mainly as follows: multi-stage mixing-settling tank, which is a typical step-by-step contact liquid-liquid mass transfer Equipment, in which each stage includes a mixer and a clarification tank. The main disadvantages of this equipment are: the horizontally arranged multi-stage mixing-mixing tank occupies a large area, each stage is equipped with a stirring device, and the fluid between stages The flow generally needs to be pumped, and the equipment cost and operating cost are relatively large; 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 transfer efficiency of the tower is relatively high. High, but its internal structure is relatively complex, the production cost is

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] see figure 1 , a single-stage stripping device, including a pipeline 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 equipped with There are mixed phase inlet 5, heavy phase outlet 6 and light phase outlet 7, of which: emulsifier inlet 3 is connected to stripping agent inlet 8 and solvent inlet 9, and emulsifier outlet 4 is connected to mixed phase inlet 5 of phase separation equipment.

[0020] Take the reverse extraction process in the purification of wet-process phosphoric acid as an example. When in use, the desalted water enters the emulsifier from the stripping agent inlet 8, and the load solvent enters the emulsifier from the solvent inlet 9 through the emulsifier inlet 3, and the load solvent and desalted water are completed in the emulsifier 1. In the high...

Embodiment 2

[0022] see figure 2 , the secondary stripping unit is composed of two sets of single-stage stripping units. The phase separation equipment (using clarifier) ​​in the first-stage stripping unit has a light phase outlet 7. The secondary solvent inlet 17 is connected in the stripping device; the secondary heavy phase outlet 15 of the secondary phase separation equipment 11 in the second stage stripping device is passed through the pipeline provided with the pump and the stripping in the first stage stripping device agent inlet 8 connections.

[0023] Taking the stripping 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 stripping device is pumped from the stripping agent in the first group of stripping devices under the action of the pump. Inlet 8. The loaded solvent enters the emulsifier 1 from the solvent inlet 9 through the emulsifier inlet 3. The loaded solv...

Embodiment 3

[0025] see image 3 , the three-stage stripping unit is composed of three groups of single-stage stripping units, the secondary light phase outlet 16 in the second-stage stripping unit is connected to the third-stage stripping unit in the third-stage stripping unit through a pipeline provided with a pump The solvent inlet 27 is connected; the three-stage heavy phase outlet 24 of the three-stage phase separation equipment 20 in the third-stage stripping device is connected with the secondary stripping agent inlet 17 in the secondary stripping device by a pipeline provided with a pump; All the other are with embodiment 2.

[0026] Take the stripping process in wet-process phosphoric acid purification as an example. When in use: the phosphoric acid from the third-stage heavy phase outlet 24 in the third-stage stripping device returns to the secondary emulsifier 10 under the action of the pump, and the load solvent is transferred from the secondary The phase separation equipment ...

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Abstract

The invention discloses a stripping device which comprises an emulsifying machine (1) and phase splitting equipment (2), wherein an emulsifying machine inlet (3) and an emulsifying machine outlet (4) are arranged on the emulsifying machine (1), a mixed-phase inlet (5), a heavy-phase outlet (6) and a light-phase outlet (7) are arranged on the phase splitting equipment (2), the emulsifying machine inlet (3) is connected with a stripping agent 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 equipment. When multiple stages of stripping devices are combined, the light-phase outlet of the phase splitting equipment in the stage of stripping device is connected with the solvent inlet in the next stage of stripping device through a pipeline provided with a pump; and the heavy-phase outlet of the phase splitting equipment in the next stage of stripping device is connected with the stripping agent inlet in the stage of stripping device through the pipeline provided with the pump. The invention can strengthen the mass transfer performance, improve the stripping efficiency and lower the stripping equipment investment and the operating cost.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a stripping device. Background technique [0002] Extraction and stripping is a way to achieve mass transfer between two liquid phases in the chemical industry. At present, the chemical equipment used for extraction and stripping is mainly as follows: multi-stage mixing-settling tank, which is a typical step-by-step contact liquid-liquid mass transfer Equipment, in which each stage includes a mixer and a clarification tank. The main disadvantages of this equipment are: the horizontally arranged multi-stage mixing-mixing tank occupies a large area, each stage is equipped with a stirring device, and the fluid between stages The flow generally needs to be pumped, and the equipment cost and operating cost are relatively large; 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 tran...

Claims

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Application Information

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IPC IPC(8): B01D11/04
Inventor 王邵东冉瑞泉禹志宏王权顶
Owner WENGFU (GRP) CO LTD
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