Solvents play an important role in the cannabis extraction process, which are used to break down hemp or cannabis plants in order to extract its cannabinoids, terpenes, essential oils and other compounds. Common solvents used in cannabis extraction are ethanol, CO2, butane and propane. These chemical solvents are usually complex and expensive, so it is necessary to recover and reuse these solvents
What are Benefits of Solvent Recovery?
The solvent recovery refers to the recycling of solvents that have been used in the process of cannabis extraction. People have paid more attention to solvent recovery because of so many actual benefits.
It’s extremely economical to recover and reuse solvents by distillation. Not only can it reduce purchases of more costly solvents, but it can reduce the cost of hazardous waste disposal.
The solvent recovery is environmentally friendly as well, which can greatly reduce the environment pollution. As a green approach, the solvent recovery may bring cannabis extraction a new hope.
What Equipment can Realize Solvent Recovery?
The most commonly used equipment for solvent recovery is rotary evaporator. A rotary evaporator can be used for solvent evaporation under reduced pressure, which is composed of a vacuum system, a heated water or oil bath, a condenser and a motor that rotates the evaporation flask. The principle is that the solvent will have a lower boiling point at reduced pressure so that it can be evaporated rapidly under vacuum condition. The solvent steam can be recycled in the receiving flask after being cooled by the high efficiency glass condenser. It is regarded as a high efficient, safe and convenient equipment for solvent recovery.
A falling film evaporator is also an efficient equipment for solvent recovery. It has a larger capacity than a rotovap. It serves as a concentration and evaporation device used in industries, applicable for the concentration and evaporation organic solvents and other substances in the pharmaceutical, food, chemical, light industries and other industries. It is especially suitable for heat sensitive materials and materials with higher concentration and higher viscosity. The equipment is continuously operated under vacuum and low temperature conditions, with high evaporation capacity, energy conservation, low operating cost. It can ensure that the material is invariable during the evaporation.
The most appropriate equipment for solvent recovery should be chosen based on types and capacity of solvents. If you need more information, please kindly get in touch with us. Our email is rotovap@lanphan.com.
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