Frequently Asked Questions

The list below includes answers to the most common questions our customers have. If you need any additional information, don't hesitate to contact us directly.

  • Simplicity: Without a compressor-based chiller or auxiliary heater, the machine does exactly what it’s supposed to with no fuss and recovers your solvent post-extraction.
  • Speed: 80GPH (300LPH) is fast. the bottleneck in your system is no longer recovery.
  • Control: Everyone has a different process, and this machine allows you to precisely control the amount of solvent left over in your extract for all sorts of post-processing steps.
  • Floor Space: The machine is 4’x4’x8’ so it can fit in any lab or shipping container.

We currently offer three units:

  • A 15kw unit capable of recovering over 15GPH (60LPH)
  • A 30kw unit capable of recovering over 36GPH (140LPH)
  • A 60kw unit capable of recovering over 80GPH (300LPH)
System pricing will vary by model and size, and additional options required for local regulatory compliance. Please fill out our contact form in order to begin the quoting process.

The system consists of three components: the Falling Film Evaporator itself, the outdoor radiator, and the electrical panel.

The Evaporator is 4’x4’ and under 8’ tall. An area of about 2’ directly in front of the unit should be available for the operator, and it can be packed tightly against walls or other equipment on the sides and the back.

The outdoor radiator is also 4’x4’ and generally goes on the roof or outside the building.

The panel box with the control panel is 48”x48” and 12” deep. It will typically be placed outside of the hazardous location or mounted on the machine itself and gas purged, depending on facility requirements and local regulations.

Yes, the machine is able to operate in temperatures up to 122 °F (50 °C).

For the 15kw and 30kw units, yes:

  • The 15kw unit can be upgraded to 30kw or 60kw.
  • The 30kw unit can be upgraded to 60kw.

For applications requiring more than 80GPH (300LPH), please contact us about a custom application.

Fill out our contact form for information on custom applications.
We have a detailed spec sheet for each unit. Shoot us a message and we will happily send it over!

The ethanol vapor passes through our patent-pending Diffusion Condenser and converts into liquid ethanol. The diffusion of the bubbles quickly dissipates heat into the liquid ethanol and condenses the ethanol vapor. The liquid ethanol then rejects its heat via a plate exchanger to water that is being circulated through the outdoor radiator. The water in turn rejects its heat to the outdoors via an airstream.

FUN FACT: you can get an extra radiator and heat your lab in the winter to use up the excess heat.

The Falling Film Evaporator units ship with everything required for operation; all you need to supply is your inlet and outlet vessels. A compressor supplying dry, oil-free air will be necessary if you elect to have a skid-mounted panel.
The Falling Film Evaporator is designed to operate at atmospheric pressure and that is what we recommend. However, if you prefer to operate under vacuum, that is easily achieved with a low CFM pump.
Typically the residence time (dwell) in the Falling Film Evaporator is 5 seconds, at a maximum temperature of 90 °C. While it is true that heat will degrade the desired compounds from your extract, the dwell time in this process is minimal compared to commonly used decarboxylation and other post-processing steps.
This is controlled very accurately by monitoring the vapor temperature in the machine. The system operates by calibrating the inlet feed rate such that the last of the ethanol is evaporating at the bottom of the falling film. The continuous ethanol evaporation throughout the tube and shell prevents the solute from achieving above 90 °C temperatures.
Automatic inlet and draining make the Yellowstone Falling Film Evaporator truly continuous, meaning batches can be as large or small as you like.
We offer comprehensive training at installation for all operators. Yellowstone Falling Film Evaporators are simple to use, with the control of the machine revolving around the inlet speed. An operator’s manual will also be included, as well as access to our online instructive video archives. We are here to help you succeed.
The amount of ethanol remaining in the crude is controlled by three factors: the concentration of the solution going in, the temperature of the falling film, and the rate at which the solution enters the evaporator; In order to dry out your crude more you either slow down the feed or turn up the temperature. This means you can control the amount of solvent removed up to 99%.
The system is easily cleaned by flushing warm solvent through, which only takes a few minutes after each run. Parts of the system will occasionally need to be removed for further cleaning to remove any buildup of sugars, etc. This will be performed according to the recommended maintenance schedule.
Yes. The machine is designed for use in Class 1 Division 2 locations.
Yellowstone Extraction systems are available in the USA.
Yes. cold inlet temperatures pose no problem to the system.
We do! Please contact us for details.
We offer a 1 year limited warranty on all our equipment. Please contact us to get additional details on our warranty policy.
We have a volatile removal/decarber skid, some solvent tanks with smart controls, a filtration skid and a much larger evaporator coming to market soon! All of these units can be easily integrated with one another.
Our system was designed with ease of use in mind.
Yes, there is an HMI component set to be released in the near future.
One operator is required to start up the machine.
Yes! Please contact us for questions about our BPE/GMP version of the unit.
Yes! We will be starting live demos in Washington state. Contact us to get onto the wait list.
Yellowstone designs equipment for commercial/industrial farmers and processors looking to refine biomass with a value-added extraction process. Food processors, essential oil extractors, and hemp processors. Our system is utilized by anyone looking to separate solvent from food grade or human consumption solutes.
We have been producing machinery for 4 years for custom projects around North America.