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Patent US10611713
Issued 2020-04-07
Automated Production Line For Preparing Cannabidiol Extract
An automated production line for preparing cannabidiol (CBD) extracts is disclosed. The production line comprises sequentially a solvent dispensing tank, an extraction tank, a first concentration tank, a dilution tank, a filter, a second concentration tank, a chromatography column and a crystallization device. Each of these elements is connected to and controlled by a central controller. The controller can control the operation of these elements such that one element may operate independently of the other. Hence, each of these elements may operate for a sufficient period of time to allow the completion of the particular CBD production step carried out by that particular element. The amount of operations by humans may be reduced, thereby increasing the production efficiency.
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- 1. An automated production line for preparing cannabidiol (CBD) extracts from industrial hemp, the production line comprising:
a central controller; a solvent dispensing tank for preparing a separation solvent; an extraction tank containing flowers and leaves of the industrial hemp, the extraction tank being connected to the solvent dispensing tank via a first conduit equipped with a first solenoid valve and a first pump, wherein upon receiving a first activation signal from the central controller, the first solenoid valve and the first pump activated to allow the separation solvent to follow through the first conduit into the extraction tank under the operation of the first pump to extract CBD from the flowers and leaves to form a CBD extract solution; a first concentration tank to receive and concentrate the CBD extract solution to form a first CBD concentrate, the first concentration tank being connected to the extraction tank via a second conduit equipped with a second solenoid valve and a second pump, wherein upon receiving a second activation signal from the central controller, the second solenoid valve and the second pump are activated to allow the CBD extract solution to follow through the second conduit into the first concentration tank under the operation of the second pump; a dilution tank to receive a diluting solvent from a diluting solvent source and the first CBD concentrate to dilute the first CBD concentrate with the diluting solvent into a diluted CBD solution, the dilution tank being connected to the first concentration tank via a third conduit equipped with a third solenoid valve and a third pump, wherein upon receiving a third activation signal from the central controller, the third solenoid valve and the third pump are activated to allow the first CBD concentrate to follow through the third conduit into the dilution tank under the operation of the third pump; a filter press to filer the diluted CBD solution to form a CBD filtrate, the filter press being connected to the dilution tank via a fourth conduit equipped with a fourth solenoid valve and a fourth pump, wherein upon receiving a fourth activation signal from the central controller, the fourth solenoid valve and the fourth pump are activated to allow the diluted CBD solution to follow through the fourth conduit to the filter press under the operation of the fourth pump; a second concentration tank to receive and concentrate the CBD filtrate to form a second CBD concentrate, the second concentration tank being connected to the filter press via a fifth conduit equipped with a fifth solenoid valve and a fifth pump, wherein upon receiving a fifth activation signal from the central controller, the fifth solenoid valve and the fifth valve are activated to allow the CBD filtrate to follow through the fifth conduit into the second concentration tank under the operation of the fifth pump; a chromatography column to receive an eluent from an eluent source and the second CBD concentrate, wherein the eluent elutes the second CBD concentrate to form a CBD eluate, the chromatography column being connected to the second concentration tank via a sixth conduit equipped with a sixth solenoid valve and a sixth pump, wherein upon receiving a sixth signal from the central controller, the sixth solenoid valve and the sixth valve are activated to allow the second CBD concentrate to flow through the sixth conduit under the operation of the sixth pump to be loaded onto the chromatography column; and a crystallization device to receive and crystalize the CBD eluate to obtain the CBD extracts, the crystallization device being connected to the chromatography column via a seventh conduit equipped with a seventh solenoid valve and a seventh pump, wherein upon receiving a seventh activation signal from the central controller, the seventh solenoid valve and the seventh pump are activated to allow the CBD eluate to follow through the seventh conduit into the crystallization device under the operation of the seventh pump.
