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A kind of device and method for separating methyl linolenic acid based on ionic liquid supported liquid membrane

A technology of methyl linolenate and ionic liquid, which is applied in the fields of semipermeable membrane separation, chemical instruments and methods, and preparation of carboxylate, can solve the problems of high cost, complicated operation, and low purity, and achieve strong stability and easy operation. The effect of simplicity and broad application prospects

Active Publication Date: 2021-06-04
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have been applied to a certain extent in the separation of polyunsaturated fatty acids, each has the problems of high cost, low purity or complicated operation.

Method used

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  • A kind of device and method for separating methyl linolenic acid based on ionic liquid supported liquid membrane
  • A kind of device and method for separating methyl linolenic acid based on ionic liquid supported liquid membrane
  • A kind of device and method for separating methyl linolenic acid based on ionic liquid supported liquid membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 (50mg / mL raw material concentration-40.1mL / min flow rate-[C 4 mim] BF 4 )

[0039] 1) Preparation of tallow catalpa oil methyl ester raw material

[0040] The methyl esterification of tallow tree oil adopts a known method: weigh 20g of methanol and 1g of KOH, mix and dissolve them, add them to 100g of tallow tree oil, stir and reflux at 60°C for 1 hour, let stand to separate layers, and take the upper oil layer for use. Wash with water until neutral, and remove water in vacuum to obtain the raw material of tallow oil methyl ester. Through mass spectrometer and gas chromatograph, the content of methyl linolenic acid in tallow catalpa oil methyl ester raw material is 21.54%.

[0041] 2) Preparation of ionic liquid membrane solution

[0042] Take 0.5 mL of 1-butyl-3-methyl-imidazolium tetrafluoroborate [C 4 mim] BF 4 and 0.25g AgBF 4 Mix well in the centrifuge tube; add 0.6mL of 1-hexene as a pretreatment agent into the centrifuge tube, vortex shaker fo...

Embodiment 2

[0050] Embodiment 2 (100mg / mL raw material concentration-40.1mL / min flow velocity-[C 4 mim][BF 4 ])

[0051] On the basis of Example 1, the concentration of the petroleum ether solution of tallow oil methyl ester was changed to 100 mg / mL, and the remaining conditions were the same as in Example 1.

[0052] Take 1mL stripping solvent from the stripping phase tank 5 per hour for gas chromatography analysis; carry out 6 hours sampling analysis results: the mass content of methyl linolenate is 65.51%, the concentration is 0.3821mg / mL, the permeation flux of methyl linolenate 0.0728mg / (cm 2 h).

Embodiment 3

[0053] Embodiment 3 (50mg / mL raw material concentration-40.1mL / min flow rate-[C 8 mim][BF 4 ])

[0054] Change the kind of ionic liquid on the basis of embodiment 1 to be 1-octyl-3-methyl-imidazole tetrafluoroborate [C 8 mim] BF 4 , the addition volume of ionic liquid is constant, all the other conditions are the same as embodiment 1.

[0055] Take 1mL stripping solvent from the stripping phase tank 5 per hour for gas chromatography analysis; carry out 6 hours sampling analysis results: the mass content of methyl linolenate is 56.30%, the concentration is 0.5301mg / mL, the permeation flux of methyl linolenate 0.0979mg / (cm 2 h).

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Abstract

The invention discloses a device and method for separating methyl linolenate based on an ionic liquid supported liquid membrane. The device includes a membrane reactor, a peeling phase delivery pump, a peeling phase tank, a raw material phase delivery pump and a raw material tank. It contains the raw material solution containing methyl linolenate, and the stripping phase tank contains the stripping solvent; the membrane reactor is equipped with an ionic liquid supporting liquid membrane, and the ionic liquid supporting liquid membrane separates the membrane reactor into upper and lower membrane chambers The liquid inlet of the upper membrane chamber is connected to the liquid outlet of the upper membrane chamber by pipelines through the stripping phase delivery pump and the stripping phase tank to form a stripping phase pipeline circulation system; the liquid inlet of the lower membrane chamber is passed through the raw material phase delivery pump and the The raw material tank is connected to the liquid outlet of the lower membrane cavity by pipelines to form a raw material phase pipeline circulation system. The present invention adopts Ag + The ionic liquid membrane liquid used as the carrier infiltrates the hydrophilic basement membrane to form the ionic liquid supporting liquid membrane, which can realize the continuous separation of high-purity methyl linolenate from the vegetable oil methyl ester.

Description

technical field [0001] The invention relates to the technical field of a production device for the separation and purification of methyl linolenate, in particular to a device and method for separating methyl linolenate based on an ionic liquid supported liquid membrane. Background technique [0002] Linolenic acid belongs to the omega-3 series of polyunsaturated fatty acids. It is the basic substance that constitutes cell membranes and biological enzymes. It has the functions of maintaining lipoprotein balance, regulating cholesterol metabolism, and lowering blood pressure and blood lipids. It is an essential fatty acid for the human body, but linolenic acid cannot It is synthesized by the human body and must be ingested from the outside world. [0003] Linolenic acid often exists with oleic acid, linoleic acid and palmitic acid in the form of glyceride in linseed oil, perilla seed oil, tallow tree oil and other vegetable oils. Since the properties of unsaturated fatty acid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04B01D69/10B01D67/00C07C67/48C07C67/58C07C69/587
Inventor 陆向红陈倩霞钱行黄振云汪之禾计建炳
Owner ZHEJIANG UNIV OF TECH
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