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Evaluation of Packed Columns in Supercritical Extraction Processes
Date
1986-06Metadata
Show full item recordAbstract
The purpose of the present work is to add to
the base of knowledge in the use of packed columns
when used in supercritical extraction service. Experimental
studies were performed on a one-inch diameter
supercritical fluid extraction column operated
in both spray and packed column arrangements.
The packing used was 1/4 inch Raschig rings with a
surface area of 220 ft^2/ft^3 . The supercritical
systems studied were carbon dioxide/ethanol/water
and carbon dioxide/isopropanol/water at 102 atmospheres
and 35°C and 102 atmospheres and 40°C,
respectively. In order to compare supercritical
with conventional extraction, similar data were
obtained in the same column with the toluene/acetone/
water system at one atmosphere and 24°C.
The results show that high rates of mass transfer
were obtained in the supercritical systems when
compared with the conventional system. Height equivalent
to a theoretical stage (HETS) values in the
range of 10 to 50% of the values for the conventional
system were obtained in both the spray and packed
column arrangements.
Subject
Packed ColumnsSupercritical Extraction Service
Toluene/Acetone/Water
Carbon Dioxide/Ethanol/Water
Carbon Dioxide/Isopropanol/Water
Collections
Citation
Rathkamp, P. J.; Fair, J. R.; Humphrey, J. L. (1986). Evaluation of Packed Columns in Supercritical Extraction Processes. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /92981.