Uploaded January 2020 | Updated September 2026, 1 week ago

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How Falling Film Evaporator Works

Falling film evaporator utilize heated tubular evaporation chambers to separate liquid solvent based on their boiling points. An array of vertical tubes enable efficient heat transfer while preserving the integrity of the product oil. In hemp processing or extraction, this step is required to concentrate the oil and recover the liquid solvent.

The Falling Film Evaporator process starts by pumping ethanol into a distributor that introduces ethanol to the vertical tubes. “Falling film” refers to a thin film that is created as the ethanol or liquid solvent falls down the inside of the heated vertical metal tubing that is heated by circulating oil on the outside of the tubes. Optimal heat transfer on the walls of these tubes allows ethanol oil or other liquid solvent mixtures to evaporate at a high throughput rate before condensing on a chilled collector.

Vacuum systems are incorporated into the equipment to lower the boiling point of ethanol and improve mass transfer. The vacuum is maintained in each stage of the process with a single vacuum pump that is monitored by the system to maximize performance.

Unlike most falling film evaporators, however, fracTron is able to independently pump liquid from stage to stage, control temperature, pressure and other variables in each of its three-stages making it optimal for total solvent evaporates without secondary processing.

fracTron removes ethanol from extracts with extraktLAB’s falling film evaporator equipment. The fracTron is a three-stage, fractional solvent distillation machine. fracTron is customizable, enables automated GMP process control, while supporting 40gal/hour continuous process flow.

Learn more about fracTron at: extraktlab.com/falling-film-evaporator
Call us at : 657-223-8158

Timestamps:
[00:00] - How Falling Film Evaporator Works
[00:01] - fracTRON features
[00:13] - Step 1: Ethanol/Oil mixture enters column
[00:21] - Step 2: Ethanol/Oil mixture is heated and ethanol is evaporated
[00:23] - Step 3: Inert CO2 is used to transport ethanol to condenser
[00:30] - Step 4: Ethanol is chilled into a liquid state for reuse
[00:35] - Step 5: The process is repeated for optimal ethanol separation
[00:38] - Step 6: Final Product: Winterized Oil
[00:49] - Learn More: https://extraktlab.com

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#winterizedoil