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Method for preparing rubber seed oil through subcritical extraction

A rubber seed oil and subcritical technology, which is applied in the direction of fat oil/fat production, fat oil/fat refining, and fat generation, can solve the problems of poor safety in large-scale production, large equipment investment and energy consumption, and large investment in supercritical equipment. , achieve the effect of shortening the production cycle, reducing high cost and low boiling point

Inactive Publication Date: 2016-03-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressing method is to use mechanical external force to squeeze out the oil in the rubber seed kernel. Compared with other extraction methods, the pressing method has a simple process and flexible production, but there will be waste residue in the oil. Although the wet rubber seed drying can reach the oil extraction process Requirements, but the equipment investment and energy consumption are relatively large, and the production cost of the oil factory is relatively high
(2) Soxhlet extraction method, which uses organic solvents to extract oils to obtain a mixture of oils and solvents, and then separates them according to the boiling points of solvents and oils. Because the organic solvents used are flammable and explosive substances, large-scale production is safe. Poor performance, this method is only suitable for the preparation of a small amount of oil in the laboratory
In the supercritical state, the supercritical fluid is contacted with the substance to be separated, so that it can selectively extract the components of polarity, boiling point and molecular weight in sequence. Due to the large investment of supercritical equipment, the operating cost is also low. Relatively high, processing raw materials are limited

Method used

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  • Method for preparing rubber seed oil through subcritical extraction
  • Method for preparing rubber seed oil through subcritical extraction
  • Method for preparing rubber seed oil through subcritical extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: this subcritical extraction prepares the method for rubber seed oil, concrete operations are as follows:

[0021] (1) Shelling the rubber seeds to obtain the rubber seed kernels, drying the rubber seeds at 70°C, and crushing the rubber seeds to obtain rubber seed powder; take 300g of rubber seed powder and place it in the extraction tank 4 of the subcritical extraction equipment and close it For the extraction tank, turn on the vacuum pump 3 to pump the extraction tank 4 to a vacuum state, turn off the vacuum pump 3, and use the pressure difference between the solvent tank 1 and the pipeline to pass the butane in the solvent tank through the solvent filter 2 and enter the extraction tank. Ratio 1:1.5, the heating device wrapped outside the extraction tank controls the temperature, the extraction temperature is 35°C, the pressure is 0.41Mpa, the number of extractions is 2 times, and the extraction time is 35 minutes;

[0022] (2) After the extraction is com...

Embodiment 2

[0025] Embodiment 2: this subcritical extraction prepares the method for rubber seed oil, concrete operations are as follows:

[0026] (1) After rubber seeds are shelled to obtain rubber seeds, the rubber seeds are dried at 70°C and crushed to obtain rubber seed powder; 300g of rubber seed powder is placed in an extraction tank of a subcritical extraction equipment and added with butane. The liquid ratio is 1:2.5, the extraction temperature is 30°C, the pressure is 0.35Mpa, the extraction time is 1 time, and the extraction time is 55 minutes;

[0027] (2) After the extraction is completed, the extract is introduced into the separation tank through the pressure control valve, and the pressure control valve is switched to evacuate until the pressure is zero to continuously vaporize and separate the solvent butane;

[0028] (3) After separation in step (2), it is liquefied after being compressed and condensed, and the liquid butane flows back to the solvent tank for continued use...

Embodiment 3

[0030] Embodiment 3: this subcritical extraction prepares the method for rubber seed oil, concrete operations are as follows:

[0031] (1) After the rubber seeds are shelled, the rubber seed kernels are obtained, which are dried and crushed at 70°C, and the rubber seed powder obtained is 300g of the rubber seed powder, which is placed in the extraction tank of the subcritical extraction equipment and added with butane. Ratio 1:3, extraction temperature 45°C, pressure 0.6Mpa, continuous extraction 3 times, each extraction time is 25 minutes;

[0032] (2) After the extraction is completed, the extract is introduced into the separation tank through the pressure control valve, and the pressure control valve is switched to evacuate until the pressure is zero to continuously vaporize and separate the solvent butane;

[0033] (3) In step (2), the solvent is liquefied after being compressed and condensed, and the liquid butane flows back to the solvent tank for continued use;

[0034...

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Abstract

The invention discloses a method for preparing rubber seed oil through subcritical extraction. In the method, the rubber seed oil is obtained through subcritical fluid butane extraction. According to the method, the extraction efficiency of the rubber seed oil is high, the recovery rate of an extraction solvent is high, the solvent residual in materials and the oil is low, and no cyanide remains in the oil; the relative content of unsaturated fatty acid in the obtained oil can reach up to 84.32%, the content of saturated fatty acid is 15.68%, and the oil is high in nutritive value, low in industrial cost and suitable for large-scale production.

Description

technical field [0001] The invention relates to a method for preparing rubber seed oil by subcritical extraction. Background technique [0002] rubber( Hevea brasiliensis ) seed is a by-product of rubber planting industry, Euphorbiaceae tree, capsule oval, 5-6 cm in diameter, with a beak tip at the top, slightly concave base, thin exocarp, reticular veins after descending, thick endocarp, woody ; Seeds oval, light gray brown, with markings. Originally produced in Brazil, it is now mainly distributed in Brazil, China, Malaysia, Thailand, Vietnam and other countries. It is planted in Guangxi, Guangdong, Hainan, Yunnan, Fujian and Taiwan in my country. Among them, Hainan Province and Xishuangbanna, Yunnan Province have the largest planting area and the largest output. . The shell of fresh rubber seeds accounts for about 1 / 3, the water content is nearly 25%, and the seed kernel contains more than 40% oil. After the development of rubber seed oil, it is mainly used in industry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10C11B1/04C11B3/00
CPCC11B1/04C11B1/10C11B3/00
Inventor 邓先余陈晗国洪旭门文卉林连兵郭军
Owner KUNMING UNIV OF SCI & TECH
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