Pressing-low-temperature continuous phase-change castor oil extraction method

A low-temperature continuous phase change, castor oil technology, applied in the direction of fat oil/fat production, fat production, etc.

Inactive Publication Date: 2013-06-26
曹庸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional process, after the castor beans are steamed and fried in the press, the castor oil produced by the press has a dark color and many impurities, which brings inconvenience to the post-processing; in the leaching, the energy consumption is large, the solvent loss is large, and the residual oil rate is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: a kind of pressing---the method for continuous phase change extraction castor oil, comprises the following steps:

[0031] (1) Select high-quality castor beans (50% oil content) after removing impurities, squeeze out 60% oil, dry at 60°C, control the moisture content to ≤6%, and crush to 20 meshes. Obtain castor bean raw material.

[0032] (2) Weigh 10kg of the processed castor bean raw material, put it into the extraction kettle of the continuous phase change extraction device, feed it with n-butane, and put the The n-butane is compressed into a liquid, and flows through the extraction kettle at a certain flow rate. After extracting the castor oil, it enters the analysis kettle, and the n-butane phase changes into a gas by heating and decompression, and then becomes a liquid through compression, and flows through the The extraction kettle is used to extract the material again for recycling, and the extracted castor oil is stored in the analysis kettle, a...

Embodiment 2

[0033] A kind of pressing of embodiment 2---the method for continuous phase change extraction castor oil, comprises the following steps:

[0034] (1) Select high-quality castor beans (50% oil content) after removing impurities, squeeze out 60% of the oil, dry at 60°C, control the moisture content to ≤6%, and crush to 40 meshes. Obtain castor bean raw material.

[0035] (2) Weigh 10kg of the processed castor bean raw material, put it into the extraction kettle of the continuous phase-change extraction device, and feed high-purity isobutane (R600a), at a temperature lower than that of high-purity isobutane (R600a). Under the conditions of critical pressure and critical temperature, high-purity isobutane (R600a) is compressed into a liquid, and flows through the extraction kettle at a certain flow rate. After extracting castor oil, it enters the analysis kettle, and the high-purity isobutane is made by heating and reducing pressure. Isobutane (R600a) is phase-changed into a gas,...

Embodiment 3

[0036] Embodiment 3 A kind of pressing---the method for continuous phase change extraction castor oil, comprises the following steps:

[0037](1) Select high-quality castor beans (50% oil content) after removing impurities, squeeze out 60% of the oil, dry at 60°C, control the moisture content to ≤6%, and crush to 60 meshes. Obtain castor bean raw material.

[0038] (2) Weigh 10kg of the processed castor bean raw material, put it into the extraction kettle of the continuous phase change extraction device, feed R134a, and compress R134a into a liquid under the condition that the critical pressure and critical temperature of R134a are always lower than that of R134a , flows through the extraction kettle at a certain flow rate, extracts the castor bean oil, enters the desorption kettle, makes R134a phase change into gas by heating and decompression, and then becomes liquid through compression, flows through the extraction kettle, and extracts the material again , recycle, the ext...

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PUM

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Abstract

The invention provides a pressing-low-temperature continuous phase-change castor oil extraction method. According to the method, a pressed, back-dried, and crushed castor seed raw material is placed into an extraction kettle; under a condition with a pressure constantly lower than 4MPa and a temperature constantly lower than 90 DEG C, the extracting agent is compressed into a liquid; the extracting agent flows through the extraction kettle with a certain flow rate, such that castor oil is extracted; the material is delivered into a resolution kettle; heating and pressure reducing are carried out, such that the extracting agent is changed into a gas phase; instant compression is carried out, the extracting agent is changed into liquid, and flows through the extraction kettle, such that the material is extracted again. The steps are repeated several times. The extracting agent is one of propane, butane, high-purity isobutane, R134a, dimethyl ether, liquefied petroleum gas, and sulfur hexafluoride. The method provided by the invention has the advantaged of high efficiency, no solvent residue in product, and high aroma component retention rate of a supercritical extraction method. Extraction pressure and resolution pressure of the method are lower than those of supercritical extraction. The method also has the advantages of large extraction volume, large-amount batch production, low production cost, and the like of a conventional solvent extraction method.

Description

technical field [0001] The invention belongs to the technical field of vegetable oil extraction, and in particular relates to a pressing-low temperature continuous phase change extraction method for castor oil. Background technique [0002] Castor, a plant of the genus Castor in the Euphorbiaceae family, usually tall, multi-branched, with tender green leaves, yellow-green flowers bloom in late summer every year, and the seeds are light brown ellipsoids with black stripes, which can be used to extract castor oil. Castor is one of the top ten oil crops in the world, mainly distributed in Asia, Africa, Europe and South America. my country is very rich in castor resources, which are distributed from south to north and from east to west. The planting area of ​​castor in a normal production year is about 3 million mu, accounting for 20% of the world's output. [0003] The economic value of castor is higher, and castor bean contains about 50% castor oil, which is beyond the reach ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/06C11B1/10
Inventor 曹庸刘汉槎周双德戴伟杰管晓盛
Owner 曹庸
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