High pressure liquid-liquid extraction method

A high-pressure liquid extraction technology, applied in the field of liquid-liquid extraction, can solve the problems of complex operating procedures, high cost, and difficult temperature uniformity of supercritical extraction devices, and achieve the effects of short extraction time, low labor intensity, and easy operation

Inactive Publication Date: 2011-09-14
SOOCHOW HIGH TECH CHROMATOGRAPHY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The operation procedure of the supercritical extraction device is complicated and the cost is also high
In the large-scale industrial extraction process, its built-in temperature control device is usually difficult to ensure the uniformity of the overall temperature, resulting in the limitation of its application

Method used

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Embodiment Construction

[0020] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, adopting this high-pressure liquid-liquid extraction method first needs to be provided with an extraction device, and this extraction device comprises a pressure-resistant container 1 and a sealing assembly 2 that can seal this pressure-resistant container, and this extraction device can be various shapes, comprises Spherical, cubic, pyramid, prism, etc. Since the extraction device needs to withstand high pressure and have good sealing performance, it needs to be made of high-strength materials such as stainless steel, cast iron and other metals. The volume of the pressure-resistant container 1 can be customized according to the needs of use, and the volume can be 1mL-1000L. The small-volume device can be used for laboratory high-pressure extraction, and the large-volume device can be used for industrial prod...

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Abstract

The invention discloses a high pressure liquid-liquid extraction method, which comprises the step of sealing and refrigerating solution requiring extraction and organic extraction solvent in a pressure resistant container, the volume of water increases below 4 DEG C and in the solidification process of water to ice, so the pressure in the pressure resistant container increases to improve the dissolubility of organic impurities in organic solvent during extraction, and simultaneously, based on the principal of zone melting, the organic impurities are squeezed out of ice in the solidification process of water to ice, thereby further enhancing the extraction efficiency. The liquid-liquid extraction method has the advantages of being low in labor intensity, simple and convenient in operation and short in extraction time, and can improve the extraction effect remarkably.

Description

technical field [0001] The invention relates to a liquid-liquid extraction method, in particular to a high-pressure liquid-liquid extraction method designed based on the principle of volume expansion after water solidification and regional smelting effects. Background technique [0002] As a conventional separation technique, liquid-liquid extraction completes the separation of target components or products in a simple and fast manner. With the development of modern science and technology, especially the development of environmental science and biomedicine, people put forward higher requirements for separation, purification, enrichment and other technologies. Many new extraction methods such as ultra-high pressure extraction (UHPE) and supercritical extraction Technology has developed rapidly. [0003] Due to the advantages of short extraction time, high extraction efficiency, and environmental protection, ultra-high pressure extraction has recently been favored by many res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04
Inventor 张维冰
Owner SOOCHOW HIGH TECH CHROMATOGRAPHY
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