The double extractor system gives you a great advantage: semi-continuous extraction. This kind of extraction means that the process never stops.
Semi-continuous extraction reduces downtime and bacterial contamination in the system. The CO2 flows continuously in the circuit, this Avoids Accumulation of Dirt and Bacteria. In the semi-continuous extraction process, the extraction begins with the extractor 1 and proceeds with the extractor 2. Then from the extractor 2 it proceeds to the extractor 1 and so on. It never stops until the production manager decides to clean the system.
The semi continuous process gives many advantages: