Continuous Cannabinoid Purification and Isomerization Process
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Solution Overview
Problem
Current methods for isolating and purifying cannabinoids, such as cannabidiol (CBD) and tetrahydrocannabinols (THC), are inefficient and non-continuous, leading to low scalability and purity issues due to the complexity of cannabinoid mixtures in plant extracts.
Innovation Solution
A continuous chromatographic process involving multiple stations and columns with gradient elution solvents is used to isolate and purify CBD, followed by conversion to Δ8-THC and Δ9-THC, utilizing catalysts and solvents to achieve high purity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If non-continuous extraction and purification methods are used, then the process is simpler to implement, but the productivity and scalability are limited
Solution Approach 1:
The patent implements continuous chromatographic separation processes that operate without interruption, allowing constant feed of crude extracts and continuous collection of purified cannabinoids. This eliminates the batch-to-batch interruptions of traditional methods, significantly increasing productivity while maintaining manageable complexity through standardized continuous flow systems.
Solution Approach 2:
The purification process is divided into multiple chromatographic columns operating in sequence or parallel, each targeting specific cannabinoid separations. This segmentation allows the complex purification task to be broken into manageable stages, improving overall productivity without overwhelming system complexity.
2Manufacturing precision
If multiple purification steps including distillation and chromatography are used, then the purity of cannabinoids is improved, but the loss of time and increased device complexity occur
Solution Approach 1:
The patent employs preliminary winterization and filtration steps that remove bulk impurities before the main chromatographic purification. This preliminary action prevents these impurities from interfering with subsequent separation steps, achieving high purity faster by addressing obvious contaminants first rather than relying solely on time-consuming chromatographic separations for everything.
Solution Approach 2:
Multiple chromatographic columns are combined in integrated systems where eluents from one column feed into the next, and purification steps are merged into continuous flows. This merging reduces the cumulative time losses between discrete steps while maintaining the purity benefits of multiple separation stages.
3Quantity of substance
If traditional extraction methods with multiple solvents are used, then the scope of cannabinoid extraction is comprehensive, but the loss of substance and increased device complexity occur
Solution Approach 1:
The patent systematically recovers solvents through evaporation and distillation steps, reclaiming them for reuse in subsequent extraction batches. This recovery approach minimizes substance loss and reduces the overall solvent consumption, improving cannabinoid yield while decreasing the complexity of waste management and solvent handling infrastructure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables the efficient and scalable purification of cannabinoids, achieving high purity levels of Δ8-THC and Δ9-THC, overcoming the limitations of existing non-continuous and inefficient processes.
Implementation Method 1
A continuous chromatographic process involving multiple stations and columns with gradient elution solvents is used to isolate and purify CBD
Implementation Method 2
loading the extract onto a chromatography column, where the cannabinoids are reversibly bound to the column
Implementation Method 3
followed by conversion to Δ8-THC and Δ9-THC, utilizing catalysts and solvents to achieve high purity and efficiency
Data Source
AI summary
In alternative embodiments, provided are processes comprising the continuous isolation and purification of cannabinoids and further isomerization of the purified cannabidiol to Δ8tetrahydrocannabinol (Δ8THC) and Δ9tetrahydrocannabinol (Δ9THC). In alternative embodiments, provided are processes for converting Δ8-THC into Δ9-THC. In alternative embodiments, provided are processes for the industrial scale continuous isolation and purification of cannabinoids and further isomerization of the purified cannabidiol to Δ9-THC.