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Filtering type liquid-liquid extraction device and method

An extraction device and filter-type technology, which is applied in the field of filter-type liquid-liquid extraction devices, can solve undiscovered problems and achieve the effects of low solvent usage, low technical threshold and high extraction efficiency

Pending Publication Date: 2018-11-13
刘琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid-liquid extraction methods include mixing method, dispersion extraction, droplet method, membrane extraction, etc., but there is no report on the extraction method that uses one phase to filter the other phase containing the target extract

Method used

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  • Filtering type liquid-liquid extraction device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Taking dichloromethane-water system as an example

[0023] 1. Open the drain valve at the bottom of the 3-cup container.

[0024] 2. The aqueous phase containing the target contained in the sample bottle enters the bottom of the cup-shaped container with a drain tube at the bottom of the 1-bottom through the pump or the suction ball through the 2-connection pipeline.

[0025] 3. Close the drain valve at the bottom of the 3-cup container.

[0026] 4.1 - Add a small amount of dichloromethane (heavy phase) to a cup-shaped container with a drain tube at the bottom. (It is enough to have a certain thickness, the purpose is to seal the water and let the water pass through it. For example, add 10-20ml or even less dichloromethane to a 1L separatory funnel).

[0027] 5. Open the drain valve at the bottom of the 3-cup container.

[0028] 6. Water passes through the lower phase as if filtered. Due to the difference in flow rate, the methylene chloride will hover over the top ...

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Abstract

The invention provides a filtering type liquid-liquid extraction device and method. The extraction manner has the advantages of high extraction efficiency, low solvent dosage, low technological threshold and low cost. A novel liquid-liquid extraction method and a device for realizing the liquid-liquid extraction method are characterized in that light-phase flow containing a target matter is filtered and extracted; the device is composed of a cup-shaped container with a liquid discharging pipe at the bottom, such as a liquid distribution funnel, pipelines, such as latex pipes, a pump or a suction ball, and a sample bottle filled with a light phase. One end of one pipeline is inserted into the bottom of the sample bottle and the other end of the pipeline is connected with the cup-shaped container with the liquid discharging pipe at the bottom through the pump or the suction ball; one end of the other pipeline is suspended in the middle of the cup-shaped container and the other end of thepipeline is inserted into the bottom of the sample bottle filled with the light phase through the pump or the suction ball. The filtering type liquid-liquid extraction device and method have the advantages of time saving and labor saving, high extraction rate and solvent saving; all parts can adopt common appliances in a laboratory so that the device has the advantages of low cost, low technological threshold and easiness for popularization.

Description

technical field [0001] The invention relates to a filter-type liquid-liquid extraction device and method, which is especially suitable for an environmental monitoring department to detect pre-treatment extraction devices for non-volatile and semi-volatile organic substances in water environments, and belongs to the field of extraction technology. Background technique [0002] When the environmental monitoring department detects non-volatile and semi-volatile organic compounds in the water environment, because the concentration in water is very low, extraction operations are often used to concentrate trace amounts of non-volatile and semi-volatile organic compounds in water into organic solvents. Liquid-liquid extraction methods include mixing method, dispersion extraction, droplet method, membrane extraction, etc., but there is no report on a method that uses one phase to filter the other phase containing the target extract for extraction. Invention content: [0003] The m...

Claims

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Application Information

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IPC IPC(8): B01D11/04C07C17/38C07C19/03
CPCB01D11/04B01D11/0488C07C17/38C07C19/03
Inventor 刘琳王山
Owner 刘琳