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March 2016 (published: 30.03.2016)
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Supercritical carbon dioxide in vegetable oil production
Melnik G. E., Volkov Sergey M., Fedorov Alexander V.
The article presents the experimental results of oil extraction from sunflower seeds by supercritical carbon dioxide (fluid). The purpose of the work is to establish the dependence of the oil yield from the parameters of the extraction process and to examine the effect of fluid extraction on the characteristics (quality) of manufactured products – oil and meal (fat-free material). The experiment was conducted by a well-known proved methodology; however, the object of the study – the oil-containing vegetable raw materials of such a quality and with such parameters – was studied for the first time. It has been established that the extraction by fluid with the process parameters selected enables extracting up to 60.30% oil compared to the mass of oil in oil-containing original sample. The original quality of oil and meal is retained. We have proposed a new technological scheme when the process of oil extraction is combined with the process of extraction by fluid in the screw oil press. The implementation of this technology in practice will allow increasing the output of oil press, to improve its quality and the quality of the meal (partly fat-free material). Given a little knowledge of the use of the fluid for oil extraction process intensification the authors believe that the publication will be of interest and use for specialists in the field of oil extraction.
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Keywords: supercritical carbon dioxide (fluid); temperature; pressure; the yield of oil; the quality of oil and meal; screw oil press, intensification.
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