Alkalisation
Standard design
- Slurry feed to fleece forming device without pressure
- First press part: Low pressure sieves
- Second press part: High pressure superimposed, grooved steel rolls
- Cutting of wet borders after first press part, no wet or thin fibre fleece
- Second lye addition for double steeping technology
- Speed control by frequency converters
- Sectional lye collection to separate lye with high hemicellulose content
Features
- Alkali cellulose (AC) obtained with uniform composition
- AC fleece thickness adjustment during operation by feed and speed control
- Universal with respect to pulp type processed
- Reduction of CS2 and NaOH input due to double steeping process in one single machine
