Method for extracting coarse oil from coix seed with hypercritical carbon dioxide

A carbon dioxide and supercritical technology, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of high cost, unsafe production operation, easy to pollute the environment, etc., and achieve the effect of low cost, safe production operation and high yield

Inactive Publication Date: 2004-03-31
江西康莱特新森医药原料有限公司
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Problems solved by technology

[0002] Chinese patent document CN1029662C discloses a "coix seed neutral oil and its extraction method". It uses solvent extraction to extract coix coix oil. It consumes 15 kg of acetone for every 1 kg of crude oil extracted, which...

Method used

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Embodiment Construction

[0010] Below through embodiment, the technical solution of this invention is described further in detail.

[0011] 1. 24L scale supercritical extraction

[0012] 1. Main parameters: the feeding amount is about 13.0Kg; the crushed particle size of coix seed is 20 mesh, and the raw material moisture is 9.58%; the temperature / pressure of the extraction kettle is 36~38℃ / 21.0~22.5MPa; the temperature / pressure of the separation column 47~55℃ / 8.5~13.0Mpa; desorption kettle temperature / pressure 26~50℃ / 4.5~6.5MPa; CO 2 The instantaneous flow rate is 65~110L / h; the extraction time is 3h.

[0013] serial number

[0014] 2. The relationship between parameters and acid value and yield

[0015] 1) The result of the influence of the pressure of the extraction kettle: because the extraction is limited by the batch, the influence of the pressure on the acid value is based on a small test and is not obvious.

[0016] batch number

[0017] It can be seen from the above tab...

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Abstract

A method or extracting crude oil of coix seed by supercritical carbon dioxide extraction. It comprise:1) drying, the water content of coix seed is below 10úÑú”2) pulverizing, naturally lowering temperature, after testing, pulverizing into 10-60 meshes; 3) supercritical carbon dioxide extraction, in the extracting vessel, the temperature is 30í½60degree Cú¼ the pressure is 19í½24MPaú”in the separating column, the temperature is 30í½60degree Cú¼ the pressure is 6í½15Mpaú”in the resolving vessel, the temperature is 30í½60degree Cú¼ the pressure is2í½6Mpaú”the flow rate is 10í½5000L/Hrú”the extraction time is 1í½4h.

Description

technical field [0001] The invention relates to a method for extracting seed oil from plant seeds, in particular to a method for extracting coix seed crude oil with supercritical carbon dioxide. Background technique [0002] Chinese patent document CN1029662C discloses a "coix seed neutral oil and its extraction method". It uses solvent extraction to extract coix coix oil. It consumes 15 kg of acetone for every 1 kg of crude oil extracted, which is not only costly, but also unsafe in production and operation. It is easy to pollute the environment. [0003] Supercritical carbon dioxide extraction of vegetable oil is a new and efficient material separation technology developed in the past 30 years, which has been applied industrially. Because the extracted plants have different components and unique effective substances, people have been researching and developing the application of carbon dioxide extraction method in various plants. ". So far, there is no report on the tec...

Claims

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Application Information

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IPC IPC(8): C11B1/10
Inventor 李大鹏
Owner 江西康莱特新森医药原料有限公司
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