Waterless wool cleaning process with supercritical carbon dioxide: extractor modeling and optimisation
2000
Publisher Summary This chapter elucidates the waterless wool cleaning process with supercritical carbon dioxide, along with extractor modeling and optimization. Describing a rigorous extraction process model, a rigorous process model is used to calculate the operating time for the semi-batch extraction of raw wool. The wool is loaded into the extractor and compressed either mechanically or by the action of the pressure differential across the bed. In either case, a model relating the compression stress to the mass balance equations is necessary. To develop such a model, the following assumptions are made: (a) dissolution of the lanolin and wax materials deposited on the wool fibers occurs at the fiber-fluid interface by mass transfer; fibers are distributed at random in the bed; (b) operation is isothermal; (c) the concentration of lanolin at the fiber surface equals its saturation value in the solvent; (d) wool fibers are assumed to be thin cylinders of constant diameter; (e) while axial dispersion in the bed is considered in the model, transverse dispersion is assumed to be extremely fast; and (f) the time for the pressure drop to establish is small compared with the extraction time so that the mechanical energy equation is directly written for the steady state.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
3
References
1
Citations
NaN
KQI