CONCENTRATION AND FRACTIONATION APPARATUS OF COMPONENT OF MIXTURE OF HIGHLY UNSATURATED FATTY ACID, ITS ESTER OR SUCH AND METHOD FOR CONCENTRATION AND FRACTIONATION OF SAID COMPONENT

摘要

PURPOSE:To concentrate and separate a desired component from a mixture of highly unsaturated fatty acid or its ester, etc., in a high efficiency, by combining a supercritical gas reflex and extraction system with an inclusion and fractionation system. CONSTITUTION:The reflux extraction system to concentrate and fractionate the objective component mainly by the difference of the carbon numbers comprises the supply and contact of a raw material mixture and a supercritical gas or high-pressure liquefied gas (hereinafter called as extractant gas) to an extraction column having multistage exchange zones in the direction of height and a heating apparatus to enable the adjustment of the temperature condition of each stage and the repetition of the separation and reflux of the mixture into the extract phase and extraction residue in each stage of the multistage exchange zones. The inclusion and fractionation system to fractionate the components mainly by the difference of double bond comprises the contact of the raw material mixture with a clathrate lattice substance in an inclusion reactor containing the clathrate lattice substance in the extractant gas using the extractant gas as a medium to effect the formation of the inclusion compound and the decomposition of the compound. The reflux extraction system is combined with the inclusion fractionation system and the solute fractionated in either system is continuously supplied to the other system and fractionated in the system to enable the concentration and fractionation of the objective component.