Essential oil extraction, recovery, and purge system and method
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United States of America Patent
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May 21, 2019
Grant Date -
Dec 6, 2018
app pub date -
Jun 11, 2018
filing date -
May 31, 2017
priority date (Note) -
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Abstract
A system and method of extracting essential oils from plant material through the use of a low pressure alcohol-based closed system that includes a solvent chamber connected to a material column that is, in turn, connected to a kettle. Plant material in the material column and the solvent in the solvent chamber are cooled using a cooling liquid, such as nitrogen. A vacuum pump connected to the kettle creates a vacuum in the kettle to draw the cooled solvent through the cooled plant material and extract essential oils, which are collected in the kettle.
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