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Micro-extraction component, super-gravity field micro-extraction device and extraction method

An extraction device and extraction technology, which are applied in chemical instruments and methods, solvent extraction, separation methods, etc., can solve the problems of small processing capacity and affect mass transfer performance, and achieve short phase separation time, high extraction rate, and shortened extraction time. Effect

Active Publication Date: 2017-09-15
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the micro-extraction device with this structure has a high extraction rate, it is limited by the micro-channel and the processing capacity is small (the processing capacity is generally micro-upgraded), it is difficult to meet the needs of industrial production in the fields of chemical industry and metallurgy, and it belongs to passive mixing mass transfer. , affecting the mass transfer performance

Method used

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  • Micro-extraction component, super-gravity field micro-extraction device and extraction method
  • Micro-extraction component, super-gravity field micro-extraction device and extraction method
  • Micro-extraction component, super-gravity field micro-extraction device and extraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this example, the micro-extraction components such as figure 1 , figure 2 , image 3 As shown, it is composed of lipophilic upper plate 1 and hydrophilic lower plate 2; the density of the upper plate 1 is 0.950g / cm 3 Made of polyethylene, its shape is truncated circular, the diameter of the circular truncated is 90mm, the bottom surface of the upper plate is flat, and the first screw hole 1-1 and the microfluidic channel 1-2 are arranged in the center from top to bottom in sequence. Channel 1-2 is a circular hole-shaped channel with a diameter of 1mm. The first screw hole 1-1 is used for installation and fixing; The diameter of the upper circular platform is 100 mm, the center of the top surface of the lower plate is provided with a feed groove 2-1, and there are spiral micro-shaped grooves 2-2 distributed from the feed groove to the edge of the top surface of the lower plate, such as Figure 4 As shown, the width of the spiral micro-groove is 0.5mm, and the dept...

Embodiment 2

[0044] In this embodiment, the supergravity field micro-extraction device such as Figure 8 , Figure 9 As shown, it includes the micro-extraction assembly described in Example 1, a feed mixer 14, a coupling body 15, a receiving tank 11, a protective cover 10, a shaft sleeve 12, a reducer 8, a motor 7, a flat key 16 and a support system; The support system consists of a truncated conical base 5, four circular cross-section columns 6 evenly distributed and fixed on the base, and circular first bearing plates 9 and circular second bearing plates mounted on the columns at a certain interval. Plate 13 is formed; The feed mixer is as Figure 10 As shown, it is a three-way pipe composed of circular pipes with an inner diameter of 0.8mm and an outer diameter of 1mm. There are two feed pipes and one discharge pipe. The angle α between the centerlines of the two feed pipes is 120° ; The coupling body 15 is as Figure 13 As shown, it is a stepped circular frustum with a large top and...

Embodiment 3

[0046] In this example, the high-gravity field micro-extraction device described in Example 2 was used to extract wet-process phosphoric acid. The main composition of the purified wet-process phosphoric acid is shown in Table 1.

[0047] Table 1 Composition of purified wet-process phosphoric acid

[0048] components

P 2 o 5

Fe 3+

SO 4 2-

F -

Contentwt%

45.41

0.57

5.06

0.13

[0049] The extractant is prepared from tributyl phosphate (TBP) and kerosene at a volume ratio of 5:1, and the ratio of the organic phase (extractant) to the aqueous phase (purified wet-process phosphoric acid) is 4:1.

[0050] The operation is as follows:

[0051] (1) Tributyl phosphate (TBP) and kerosene are prepared as an extraction agent at a volume ratio of 5:1 and the extraction agent is preheated to 50°C;

[0052] (2) Start the motor so that the power output shaft of the reducer drives the lower plate 2 to rotate at a speed of 250rad / mi...

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Abstract

The invention discloses a micro-extraction component which comprises a lipophilic upper disk and a lipophilic lower disk. A micro-fluid channel is arranged at the center of the upper disk, the bottom of the upper disk is a plane, a feeding groove is formed in the center of the lower disk, and micro-grooves are distributed from the feeding groove to the top edge of the lower disk. A super-gravity field micro-extraction device comprises the micro-extraction component, a feeding mixer, a connector, a receiving trough, a protective cover, a shaft sleeve, a speed reducer, a motor and a supporting system. The super-gravity field micro-extraction device is used for the following extraction operation: (1) starting the motor and driving the lower disk to rotate by power of the speed reducer; (2) feeding an organic phase and a water phase into the feeding mixer through two feeding ports of the feeding mixer, throwing the water phase and the organic phase after flowing mass transfer into the receiving trough under the action of centrifugal force, and discharging the water phase and the organic phase from a discharging port formed in the receiving trough; (3) collecting discharges at the discharging port of the receiving trough, and performing standing phase separation on the discharges.

Description

technical field [0001] The invention belongs to the technical field of chemical extraction, and in particular relates to a micro-extraction component, a micro-extraction device and an extraction method. Background technique [0002] Extraction is the transfer of a substance from one solvent to another by using the difference in solubility or distribution coefficient of a substance in two immiscible (or slightly soluble) solvents. As an important separation unit operation, it is widely used in chemistry, chemical industry, metallurgy, food processing and other fields. [0003] At present, the solvent extraction method is mainly used in industry, and the contact mass transfer is carried out by dispersing one phase into another phase under the external force. The corresponding common extraction equipment includes extraction tower, mixing and settling tank (extraction tank), etc. . These extraction equipment often cannot effectively enhance microscopic mass transfer, and the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04
CPCB01D11/048B01D11/0496
Inventor 李军王玉滨金央曹艳罗建洪
Owner SICHUAN UNIV
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