Rapid botanical oil distillation device utilizing microwave agent

Patent metadata

Field	Value
Publication number	US-11021674-B2
Application number	US-201716465735-A
Country	US
Kind code	B2
Filing date	Dec 1, 2017
Priority date	Dec 1, 2016
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

Various aspects of the disclosure relate to methods and systems for extracting plant oil from plant material. A system may comprise a microwave emitter, an extraction chamber, and a cooling chamber. Microwave radiation emitted by the microwave emitter may dielectrically heat a microwave absorbing agent, which may heat the plant oil of the plant material. Plant oil of the plant material may be volatized in the extraction chamber and may be directed into the cooling chamber to be condensed.

First claim

The invention claimed is:

1. A method of extracting oil from plant material, comprising:
providing a system for extracting oil from plant material, wherein the system comprises (a) a microwave emitter, (b) an extraction chamber in communication with the microwave emitter such that microwave radiation emitted by the microwave emitter is directed into the extraction chamber, and (c) a cooling chamber in communication with the extraction chamber such that volatized oil in the extraction chamber is directed into the cooling chamber;
combining a plant material and a microwave absorbing composition comprising a microwave absorbing agent, the microwave absorbing composition comprising a mixture of solids sized from about 50 μm to about 5 cm, wherein at least some solids of the mixture of solids comprise the microwave absorbing agent, and wherein the microwave absorbing agent is not water;
inserting the plant material and the microwave absorbing agent into the extraction chamber;
irradiating the microwave absorbing agent with microwave radiation emitted from the microwave emitter, thereby either dielectrically heating the microwave absorbing agent or heating the microwave absorbing agent by interfacial polarization, heating the plant material, and volatizing a plant oil from the plant material to produce a volatized oil;
condensing the volatized oil in the cooling chamber, thereby producing a condensed oil; and
collecting a portion of the condensed oil, thereby producing a collected oil that is suitable for human consumption.

2. The method of claim 1 , wherein the mixture of solids comprises a powder, grit, flakes, beads, structured packing, fibers, rods, metal, glass, ceramic, sand, or clay.

3. The method of claim 1 , wherein:
the microwave absorbing composition comprises at least one rod, tube, or sheet;
the at least one rod, tube, or sheet has at least one dimension of about 1 cm to about 100 cm; and
the at least one rod, tube, or sheet comprises the microwave absorbing agent.

4. The method of any one of claim 1 , wherein:
the microwave absorbing composition comprises a substrate that is impregnated with the microwave absorbing agent.

5. The method of claim 4 , wherein the substrate is a glass, ceramic, clay, salt, metal, sand, or crushed rock.

6. The method of claim 1 , wherein the microwave absorbing agent comprises a liquid.

7. The method of claim 1 , wherein the microwave absorbing agent has a boiling point greater than 360° F. at atmospheric pressure.

8. The method of claim 1 , comprising maintaining a temperature inside the extraction chamber at 300° F. to 450° F.

9. The method of claim 1 , comprising maintaining at least one surface of the cooling chamber at a temperature of 70° F. to 314° F.

10. The method of claim 1 comprising maintaining at least one surface of the cooling chamber at a temperature of 35° F. to 212° F.

11. The method of claim 1 , wherein:
the extraction chamber comprises a first opening and a second opening;
the plant material and the microwave absorbing agent are inserted into the extraction chamber through the first opening; and
the volatized oil in the extraction chamber is directed into the cooling chamber through the second opening.

12. The method of claim 1 , wherein the plant material comprises hemp or cannabis.

13. The method of claim 1 , wherein condensed oil and collected oil comprise cannabidiol (“CBD”), cannabidivarin (“CBDV”), tetrahydrocannabinol (“THC”), tetrahydrocannabivarin (“THCV”), cannabigerol, cannabichromene, linalool, caryophyllene, myrcene, limonene, humulene, pinene, or a combination of two or more of the foregoing.

14. The method of claim 1 , wherein the boiling point of the plant oil is greater than 212° F.

15. A method of extracting tetrahydrocannabinol (“THC”) and/or cannabidiol (“CBD”) from hemp or cannabis , comprising:
providing a system for extracting oil from plant material, wherein the system comprises (a) a microwave emitter, (b) an extraction chamber in communication with the microwave emitter such that microwave radiation emitted by the microwave emitter is directed into the extraction chamber, and (c) a cooling chamber in communication with the extraction chamber such that volatized oil in the extraction chamber is directed into the cooling chamber;
combining a plant material and a microwave absorbing composition comprising a microwave absorbing agent, the microwave absorbing composition comprising a mixture of solids sized from about 50 μm to about 5 cm, wherein at least some solids of the mixture of solids comprise the microwave absorbing agent, and wherein the plant material is hemp or cannabis and the microwave absorbing agent is not water;
inserting the plant material and the microwave absorbing agent into the extraction chamber;
irradiating the microwave absorbing agent with microwave radiation emitted from the microwave emitter, thereby either dielectrically heating the microwave absorbing agent or heating the microwave absorbing agent by interfacial polarization, heating the plant material to a temperature of about 314° F. to about 450° F., and volatizing THC or CBD from the plant material to produce a volatized oil comprising the THC or CBD;
condensing the volatized oil to a temperature of about 70° F. to about 365° in the cooling chamber, thereby producing a condensed oil comprising the THC or CBD; and
collecting a portion of the condensed oil, thereby producing a collected oil comprising THC or CBD.

16. A system for extracting oil from plant material, comprising:
a microwave emitter;
an extraction chamber in communication with the microwave emitter such that microwave radiation emitted by the microwave emitter is directed into the extraction chamber;
a microwave absorbing composition disposed in the extraction chamber, wherein the microwave absorbing composition comprises a microwave absorbing agent, and the microwave absorbing composition is not food, the microwave absorbing composition further comprising a mixture of solids sized from about 0.1 μm to about 5 cm and, wherein at least some solids of the mixture of solids comprise the microwave absorbing agent;
a plant material disposed in the extraction chamber; and
a cooling chamber in communication with the extraction chamber such that volatized oil in the extraction chamber is directed into the cooling chamber,
wherein:
the system is configured to either dielectrically heat the microwave absorbing agent or heat the microwave absorbing agent by interfacial polarization by microwave radiation emitted from the microwave emitter;
the system is configured to heat the plant material by thermal radiation emitted from the microwave absorbing composition, thereby volatizing oil of the plant material to produce a volatized oil; and
the cooling chamber is operable to condense at least a portion of the volatized oil.

17. The system of claim 16 , wherein the microwave absorbing composition comprises a substrate that is impregnated with the microwave absorbing agent.

18. The system of claim 16 , wherein the microwave absorbing composition comprises a liquid.

19. The system of claim 16 , wherein the microwave absorbing agent has a boiling point that is greater than 360° F. at atmospheric pressure.

20. The system of claim 16 , wherein:
the extraction chamber comprises a first opening and a second opening;
the first opening is shaped and sized to allow the plant material and the microwave absorbing composition to enter and exit the extraction chamber;
the first ope

Assignees

• Natural Extraction Sys Llc

Inventors

• Thomas C Russell

Classifications

• A61K36/3482

  Cannabis · CPC title

• B01D11/0288

  Applications, solvents · CPC title

• B01D11/028

  Flow sheets · CPC title

• B01D5/006

  with evaporation or distillation · CPC title

• B01D3/40

  Extractive distillation · CPC title