METHOD AND DEVICE FOR TREATING MATERIAL OR MATERIAL MIXTURE

摘要

PURPOSE: To disperse any high viscous raw material or any mixture of high viscous raw materials and to extract the component for easily treating the raw material or the mixture without adding a high pressure by adding a solvent to the mixture before dispersion or extraction and by later dispersing the mixture into an extraction column. CONSTITUTION: In a method for treating a raw material or a mixture of raw materials by dispersing the raw material or the mixture of raw materials to be treated with a liquid solvent or a solvent in supercritical state during the treatment, the material or the mixture to be treated is charged with the solvent before dispersion or extraction and then sprayed into an extraction column 14 where they are dispersed. The charging with the solvent before extraction is carried out until the material or the mixture is saturated with the solvent. For example, the charging of raw lecithin in a charging column is carried out at 32-80 deg.C and at a pressure corresponding at least to the critical pressure of carbon dioxide. The deoiling of raw lecithin in an extraction column 14 is carried out at a temperature between the critical temperature of carbon dioxide and 80 deg.C and at a pressure higher than the critical pressure of carbon dioxide.