In this Helix configuration with SCCO₂ and Subcritical H₂O, the same extractor vessel is used for both types of extractions. They cannot be used simultaneously. However, after clean-up from one operation, the other technique can be employed.
The supercritical CO₂ part of the configuration is the same as the Helix: CO₂ Extraction System.
In order to do subcritical water extractions, the Helix employs:
- a separate liquid pump to pump the water into the extractor vessel
- a separate collection/condensation system to safely condense the “superheated steam” and collect the desired extracts
- Applied Separations, Inc. standard vessels configured to subcritical water achieve 240°C. Optionally, vessels can be configured to achieve 300°C.