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Sub-critical fluid extraction solvent and abstraction method

A subcritical fluid and extraction solvent technology, applied in the direction of solid solvent extraction, etc., can solve the problems of effective volume enlargement of equipment, restricting industrial application, etc., and achieve the effect of improving solvent recovery rate, improving market competitiveness and reducing energy consumption.

Inactive Publication Date: 2012-07-04
韩延欣 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, CO 2 The extraction process must be carried out under the ultra-high pressure state above 25MPa. The extremely high pressure limits the expansion of the effective volume of the equipment, and also restricts the industrial application of this technology in the production of intermediates

Method used

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  • Sub-critical fluid extraction solvent and abstraction method
  • Sub-critical fluid extraction solvent and abstraction method
  • Sub-critical fluid extraction solvent and abstraction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Subcritical fluid extraction of seabuckthorn seed oil: pulverize the seabuckthorn seeds, and the particle size is controlled at 2 mesh to 80 mesh; the automatic feeder sends the raw materials into the extraction kettle, and when the volume of the raw materials reaches 1 / 3 of the volume of the extraction kettle, Stop feeding, close the inlet and outlet control valve; reduce the vacuum of the extraction kettle to 1×10 4 below pa, remove the non-condensable gas in the system; control the temperature of the solvent storage tank 4 pa-5×10 -2 Pa vacuum state, the mixed solution is analyzed and evaporated in the desorption tank, and the preliminary separation of the solvent and seabuckthorn seed oil is completed; the mixed solution that has been roughly separated by the primary desorption is injected into the secondary desorption tank through the transfer pump, and heated by the jacketed heat exchanger. at 5×10 -2 In a high vacuum state of pa, the solvent is furthe...

Embodiment 2

[0056] Example 2: Subcritical Fluid Extraction of Tanshinone II A: Pulverize the salvia miltiorrhiza raw material and control the particle size between 2 mesh and 80 mesh; the automatic feeder sends the raw material into the extraction kettle, and stops when the volume of the raw material reaches 1 / 3 of the volume of the extraction kettle Loading, close the inlet and outlet control valve; reduce the vacuum of the extraction kettle to 1×10 4 Below pa, remove the non-condensable gas in the system; mix sulfur hexafluoride and heptafluoropropane in equal volumes, control the temperature of the mixed solution -2 In pa high vacuum state, the ethanol entrainer further decomposes, evaporates and condenses to complete the recovery of ethanol solvent, and at the same time obtains tanshinone IIA extract in the secondary desorption tank; the extraction tank is continuously heated by a jacketed heat exchanger, and the material in the tank is continuously stirred. Slag, in 5 x 10 -2 Under t...

Embodiment 3

[0059] Example 3: Subcritical fluid extraction of Lycium barbarum seed oil: Sulfur hexafluoride and tetrafluoroethane are miscible at a volume ratio of 6:4, and the temperature of the solvent storage tank is controlled 4 below pa, remove the non-condensable gas in the system; then inject the mixed solvent of sulfur hexafluoride and tetrafluoroethane into the extraction kettle according to the volume ratio of solvent and raw material 2.5:1, stir and mix with the raw material of Lycium barbarum seeds; to 45°C, hold for 50 minutes, and complete a soaking extraction; repeat the extraction three to five times, and combine the extraction mixture into the temporary storage tank; repeatedly pass the extraction mixed solution of the temporary storage tank through the tubular heat exchanger and the jacketed The heat exchanger is heated to maintain the system temperature at 30°C-40°C at 1×10 4 Pa vacuum state, the sulfur hexafluoride, tetrafluoroethane mixed solvent in the mixed solution ...

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Abstract

The present invention relates to a dissolvent with effective ingredient extracted from the plant-and-animal raw material and the extraction method thereof. One subcritical fluid extraction solvent includes an extraction solvent of a compound or composition extracted from the raw material containing compound or composition as component element, and the solvent is mainly characterized in that the liquid sulfur hexafluoride works as the extraction solvent. The invention also includes a method for extracting the subcritical fluid extraction solvent. The advantage of the invention is that the extraction and separation of the target component in the natural product are optionally executed to further increase the extraction rate of the intermediate product and the usage factor of the raw material while the unique dissolving character of the sulfur hexafluoride and the mixed solvent thereof to the liposoluble active ingredient is used. The physical features of strong dissolving capacity and low boiling point of the sulfur hexafluoride and the mixed solvent thereof are used to reduce the consumption quantity of the energy source, dissolvent of the system and the cost, and increase the market competition ability of the intermediate product.

Description

Technical field: [0001] The invention relates to a solvent for extracting active ingredients from animal and plant raw materials and an extraction method thereof. Background technique: [0002] According to the solubility properties of various components in animal and plant raw materials in different solvents, according to the principle of "like dissolves like", choosing a solvent with high solubility for the required active components and low solubility for the components that do not need to be dissolved will be effective. The ingredients are dissolved from the raw material tissue, and then the extraction solvent is recovered by distillation to complete the extraction and separation process. [0003] Traditional extraction solvents include strong polar solvent water and polar organic solvents ethanol, methanol, acetone, etc., ethanol is the most commonly used; lipophilic organic solvents, such as petroleum ether, benzene, chloroform, ether, ethyl acetate, dichloroethyl Alk...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/02
Inventor 韩延欣柴守环王智民
Owner 韩延欣
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