A method for supercritical extraction of borneol camphor essential oil

By introducing a mixing cylinder and a material shaking mechanism into the extraction device, the carbon dioxide fluid is fully in contact with the perinatal camphor tree particles by using centrifugal force and a material shaking mechanism, the problem of low extraction efficiency in the prior art is solved, and efficient perinatal camphor tree essential oil extraction is achieved.

CN118291210BActive Publication Date: 2025-09-05JIAN ZHONGXIANG NATURAL PLANT CO LTD +1
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Patent Information

Application Number
CN202410584081.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-05-11
Publication Date
2025-09-05
Estimated Expiration
2044-05-11

AI Technical Summary

Technical Problem

In the existing extraction methods of camphor tree essential oil, the accumulation of materials in the extraction kettle makes it difficult for supercritical fluid to fully contact with the material, the one-way extraction rate is low, repeated extraction is required, and the extraction efficiency is low, which is seriously wasteful.

Method used

The dynamic extraction method combined with a mixing cylinder and a material shaking mechanism is adopted to contact the carbon dioxide fluid with the head of the head through centrifugal force, and the particles with the carbon dioxide fluid are fully in contact with the carbon dioxide fluid by using the material shaking mechanism, and carbon dioxide gas and essential oil are separated by centrifugation and oil absorption sponge.

Benefits of technology

It improves the one-way extraction rate, reduces the number of repeated extractions, improves the extraction efficiency, reduces the extraction cost, and avoids waste of essential oils.

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Abstract

The invention relates to the technical field of borneol camphor tree essential oil extraction, and in particular to a method for supercritical extraction of borneol camphor tree essential oil. The method comprises an extraction device, a carbon dioxide storage tank, a pressurizing device and a separation kettle, wherein the extraction device comprises a bottom kettle, an annular inner kettle is sealed and fixedly connected to the top of the bottom kettle, and an extraction top kettle is sealed and fixedly connected to the top of the annular inner kettle. The invention introduces borneol camphor tree particles and a carbon dioxide fluid into a mixing cylinder at the same time, applies centrifugal force to the mixing cylinder, causes the carbon dioxide fluid to perform preliminary extraction on the borneol camphor tree particles, and then re-discharges the borneol camphor tree particles preliminarily extracted in the mixing cylinder into a sieve cylinder through a material shaking mechanism. During the falling process of the borneol camphor tree particles, the borneol camphor tree particles are further extracted, thereby performing complete extraction, so as to solve the problems that the existing borneol camphor tree essential oil extraction process requires repeated extraction and has low extraction efficiency.
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