Cannabis / Hemp Solvent Recovery

Solvents are used in initial extraction, winterization, isolation, and other key steps in the processing chain. This solvent must be separated from the cannabis oil prior to consumption.

Solvent Recovery

Reclaim solvent to perform further extractions, winterization, or other post-processing techniques

Degas/Decarb

Polish and activate crude oil for further refinement

Distillation

Purification into a highly concentrated and refined cannabinoid oil

Isolation

CBD isolate is used for herbal supplement and end-product applications

THC Remediation

THC, heavy metal, pesticide, and color remediation

Formulation

Preparation into tinctures, topicals, vaporizer cartridges, water-solubles, and other consumer focused end-products

Extraction

Crude oil is extracted directly from plant material

Winterization

Precipitation of inactive compounds

Filtration & Color Remediation

Removal of unwanted compounds and refinement of cannabis extract

Solvent Recovery Solutions

SolventVap Rotary Evaporators

These powerful rotary evaporators from Across International can be used to gently remove solvents from samples using rotating glassware in a bath.

We carry several different sizes of AI rotary evaporators to suit the needs of laboratories both large and small.

All models of SolventVap Rotary Evaporators we carry are also UL/CSA listed.

  • Available Sizes

    2L, 5L, 10L, 20L, 50L

  • Certifications

    UL/CSA

Falling Film Evaporators

Yellowstone EV falling film evaporators are designed for large-scale solvent recovery while greatly reducing energy consumption and increasing throughput.

Yellowstone falling film evaporators DO NOT require a chiller. They consume up to 65% less energy than similar systems.

  • Recovery Rate

    250-300 liters per hour

  • Classification

    C1D2

AUTOMATED SOLVENT RECOVERY SYSTEM (ASRS)

In industrial or commercial-scale production, solvent recovery can be an unexpected bottleneck that isn’t easily addressed without a large capital investment.

The Automated Solvent Recovery System (ASRS) is a tried-and-true, compliant solution to this common problem.

  • Available Sizes

    32, 55, 75, 110 Gallon

  • Certifications

    C1D1 & METLAB

The Importance of Solvent Recovery

Solvent recovery is one of the more overlooked steps in the processing chain. Solvent recovery is a simple process, but it can often become a bottleneck for many processors unexpectedly. Even though the process of solvent recovery may be straightforward, the systems that achieve solvent recovery often use large amounts of power to achieve high efficiency. This means processors must be aware of the amount spent on electricity consumption and select solvent recovery systems that match the needs of the other downstream processing systems in the facility.

Ethanol Recovery

Solvent recovery is often performed after the initial extraction step when using ethanol as the extraction solvent. Solvent recovery is also performed after the winterization step to separate crude oil from the solvent used during winterization.

Prior to performing distillation, isolation, or further cannabis crude oil refinement beyond winterization, the solvent must be separated from the cannabis oil. Solvent recovery systems are designed to purify the solvent in the process of recovery. What this means is that you can reuse that solvent to perform further extractions, winterization, or other post-processing techniques. This saves valuable capital, as solvent is one of the more expensive consumable items that cannabis processing facilities use.

Types of Solvent Recovery Systems

Rotary Evaporators

One of the most common types of solvent recovery systems is a rotary evaporator. Rotary evaporators are specifically designed to recover a wide range of solvents and are used in many types of laboratories beyond the cannabis industry.

Their ability to recover a variety of solvents makes them extremely useful, as some other types of solvent recovery systems can only recover one type of solvent, such as ethanol. Rotary evaporators come in a variety of sizes to match the needs of your solvent recovery process. Rotary evaporators usually fit into laboratory-scale operations but can be scaled by adding multiple systems. As you will see, there are some solvent recovery systems that can handle much larger volumes than rotary evaporators.

Rotary evaporators make use of a rotating flask that causes the solution inside to become agitated. The rotating flask also sits in a heated water bath. The combination of heat, agitation, and the reduction in pressure by a vacuum pump causes the solvent to evaporate. The solvent vapor is pulled by the vacuum pump into a condenser within the rotary evaporator. This condenser is attached to a chiller which circulates liquid through it. The temperature differential of the condenser causes the vapor solvent to condense back into a liquid where it is collected and re-used for further processing.

Ready to get started?

Whether you're looking to start a basic lab setup, upgrade your existing lab, or scale it to industrial purposes, we can help you out in every step of the process to build the lab of your dreams.