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The conventional continuous extractor uses an extraction system of
vertical batch-operated percolator columns. The system features
a layout with circular columns, which provides a more
compact design.
The most up-to-date processing recognizes the importance of:
- Optimum raw material handling and preparation, including pre/moisturing -
right up to the filling of the columns
- Selective introduction of extraction medium at two different stages
- Separation of extracted solids in two extracts (split or double)
- Minimum residence time of extracted solids by maintaining high extract flow
times
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