Supercritical fluid extractors, component

Finally, although it is not rigorously part of supercritical fluid extraction, a last step generally afforded hy analytical-scale supercritical fluid extractors is reconstitution of the extracted components in a solution that is appropriate for the subsequent analytical instrument. In the case of gravimetric assays, the net loss of sample weight or the net weight of extract components can be measured and reconstitution of extracted components is not necessarily employed. 

Walter, D.F.G., Bartle, K.D., Breen, D.G.P.A., Clifford, A.A., and Costiou, S. 1994. Quantitative method for the analysis of flavour and fragrance components from Lavender and rosemary by studying the kinetics of their supercritical fluid extractor, no/ysf, 119, 2789-2793. 

The Model 50 Supercritical Fluid Microextractor from the Suprex Co. (Pittsburgh, PA) was adapted for this design. A schematic of our multi-vessel extractor design can be found in Figures 1 and 2, for six and twelve multi-vessel systems, respectively. The following is a detailed description of the main components. The design, explained here for the extraction from six and twelve vessels is in principle applicable to any number of vessels, provided that other components of the system are scaled up. 

The invention described in this patent is the combination of using a supercritical fluid to dissolve the desired components from tar sands and to recover regeneratively heat from the tar free sand leaving the exu actor. Tar sands are fed to an extractor where they are contacted countercunently with supercritical aromatic solvents such as benzene, toluene, or other substituted benzenes, or with supercritical cycloaliphatic solvents such... 

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