Liquid carbon dioxide botanical extraction system

1. A process for extracting cannabinoids from cannabis with sub-critical liquid carbon dioxide, the process comprising:

providing a permeable container;

placing the cannabis within the permeable container;

providing a pressurizable extraction vessel having a drum or basket;

placing the permeable container containing the cannabis within the extraction vessel;

filling the extraction vessel with liquid carbon dioxide under subcritical conditions;

activating the drum or basket while the pressurizable extraction vessel is under pressure to allow the cannabis to be in contact with the subcritical liquid carbon dioxide so as to extract at least a portion of the cannabinoids from the cannabis into the subcritical liquid carbon dioxide;

removing from the extraction vessel the subcritical liquid carbon dioxide containing the cannabinoids extracted from the cannabis ; and

separating the liquid carbon dioxide from cannabinoids.

2. The process of claim 1 , further comprising adding ethanol to the liquid carbon dioxide.

3. The process of claim 1 , wherein the drum or basket includes a rotatable drum containing baffles, wherein activating the drum or basket includes rotating the drum when the permeable container and the cannabis are in contact with the subcritical liquid carbon dioxide in order for the baffles to contact the permeable container.

4. The process of claim 1 , further comprising:

depressurizing the extraction vessel; and

removing from the extraction vessel the first permeable container containing the cannabis.

5. The process of claim 1 , wherein the extraction of the at least portion of the organic compound from the cannabis into the sub-critical liquid carbon dioxide is conducted at a pressure between 2.76 to 4.99 MPa.

6. The process of claim 1 , wherein the extraction of at least a portion of the cannabinoids from the cannabis into the subcritical liquid carbon dioxide is conducted at a temperature between −10° C. to 14° C.

7. The process of claim 1 , further comprising distilling the subcritical liquid carbon dioxide containing the cannabinoid to yield the cannabinoids.

8. The process of claim 1 , wherein the basket or drum includes a rotatable impeller, wherein activating the drum or basket includes rotating the impeller to permit the subcritical liquid carbon dioxide to contact the cannabis contained within the permeable container.

9. A process for extracting a cannabinoid from cannabis , the process comprising:

providing a permeable container;

placing the cannabis within the permeable container;

providing a pressurizable extraction vessel having an agitation device a rotatable impeller;

placing the permeable container containing the cannabis within the extraction vessel;

filling the extraction vessel with liquid carbon dioxide under subcritical conditions;

activating the agitation device rotatable impeller while the pressurizable extraction vessel is under pressure to allow the cannabis to be in contact with the subcritical liquid carbon dioxide so as to extract at least a portion of the cannabinoid from the cannabis into the subcritical liquid carbon dioxide;

removing from the extraction vessel the subcritical liquid carbon dioxide containing the cannabinoid extracted from the cannabis ; and

separating the liquid carbon dioxide from the cannabinoid.

10. The process of claim 9 , further comprising adding ethanol to the liquid carbon dioxide.

11. The process of claim 9 , wherein the extraction of the at least portion of the cannabinoid from the cannabis into the sub-critical liquid carbon dioxide is conducted at a pressure between 2.76 to 4.99 MPa.

12. The process of claim 9 , wherein the extraction of the at least portion of the cannabinoid from the cannabis into the sub-critical liquid carbon dioxide is conducted at a temperature between −10° C. to 14° C.

13. The process of claim 9 , further comprising distilling the subcritical liquid carbon dioxide containing the cannabinoid to yield the cannabinoid.