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short path distillation cbd

Short path distillation cbd

This method reduces the exposure time of the oil and can increase productivity if it is run in a continuous mode. With a wiped film extraction, you will need to run two passes through the system to achieve a distillate. As in distillation, you are stripping the crude of low boiling point compounds first, for example, terpenes and leftover volatiles. You would then run that residue again to achieve the final distillate.

Wiped film has an extremely efficient and even heat transfer due to its thin film of oil, no matter how viscous the fluid is. This results in a high-quality product. The process can easily be used for large-scale productions, so it’s ideal for large batches of distillation. If you run in a continuous mode, it also reduces the exposure time of the oil and increases productivity.

Like most distillation processes, short path requires an experienced operator to efficiently get a high-quality product. It is limited in scale and production, so it’s not ideal for large-scale operations.

Wiped film distillation is a variation of short path distillation, which can operate in batches or continuous modes. The operation process is simple yet effective. It’s well suited for high production/scale and high throughput because it uses a continuous feed compared to the short path method.

Pros of Wiped Film Distillation

While under vacuum, the crude oil is added to the top of a heated vertical cylinder on a rotating plate. Specially designed wipers wipe the oil, thus creating and renewing the thin film. This thin film enables an efficient heat transfer, even for highly viscous fluids.

So what are the differences and similarities between short path and wiped film distillation? Let’s dive in.

Crude oil is heated in a boiling flask with a magnetic stirrer. The condensing head is jacketed and requires a recirculating chiller to cool the condensing head to condense the cannabinoid vapor back into a liquid form.

Wiped Film

The compounds are then separated through slow thermal heating with precise and controlled temperatures. As you slowly raise the boiling flask temperature, you will get multiple fractions of the distillation—the higher you go, the different compounds you will be distilling, starting with highly volatile terpenes or solvent leftover at lower temperatures. Raising the temperature will create a new compound/fraction, and the multi-position receiving flask can be adjusted to collect the different fractions into different receiving flasks.

Short path distillation produces a high-quality distillate, but is limited in scale. Wiped film distillation is a variation of short path distillation that reduces the exposure time of the crude oil to heat and can increase productivity.

Short path distillation cbd

Cannabis oil compounds are separated into 3 different “fractions” (main, heads, tails), collected at the different temperature points in the distillation process. As the temperature rises, a new compound fraction is evaporated, re-condensed and then goes into a receiving flask.

It is worth explaining, because it is often confused, that the technique of wiped film distillation is a form of short-path distillation. Sometimes it is also referred to as “thin film” or even “rolled film” distillation. This technique is simple, effective and great for larger scale operations with high throughput needs. The difference is the continuous feed aspect of wiped film.

Short Path Distillation

The future of the cannabis business is limitless. The ability to process cannabis plant material into distillates and other purified cannabis components is an excellent way to grow your hemp or marijuana operation with product diversification. If you are looking to make a variety of products like edibles, vape cartridges, oils, lotions or pills, you will need a distillation system.

Wiped Film Distillation

Short path distillation, also referred to as fractional distillation, produces high-quality cannabis distillate, though the process is limited in both scalability and production capacity. During the short-path process, a boiling flask is used to heat crude oil and the oil is agitated with a magnetic stirrer. The compounds are separated in the oil using heat until they transform into vapor. The vaporized compounds rise up and then are chilled back to a liquid using a condensing coil.

Short path distillation cbd

How is distillation used for cannabis oil?

Temperatures and pressures used in a system can usually be altered to address a business’s specific goals. Changing the pressure can affect the temperatures at which certain compounds boil at, making it easier to remove them from the product. If boiling temperatures are lowered, this also decreases the risk of overheating and degrading the product.

If further purification is required, the distillate can be passed through an isolate production system to obtain up to 99.9% pure cannabinoids.

Simple distillation is appropriate for the separation of materials that have significantly different boiling points. When heated the liquid that is more volatile will vaporize and travel through the system, recondensing into a liquid when it passes through a chilled condenser. This results in the volatile substance becoming separated from the initial product.