METHOD OF SEPARATING POLYDISPERSE SOLUTION OF DISTILLERY STILLAGE

摘要

FIELD: chemistry. ^ SUBSTANCE: invention relates to processes of separating polydisperse systems through vibroacoustic effect. The method of separating polydisperse solution of distillery stillage involves coagulation of colloidal and dissolved substances of a dispersed phase and subsequent separation of the solid fraction of the formed product from the solution with separation of the liquid fraction of the dispersed medium. The dispersed phase is coagulated in two steps by applying energy of acoustic vibrations on the solution in at least two spectra in the 1-18 kHz range, providing weakening of surface tension of colloidal and dissolved substances, and in the 80-400 Hz range, increasing their amplitude of vibration. Before coagulation of the dispersed phase from the solution through evacuation, volatile aromatic substances are separated in form of a condensate, and before the second step for applying energy of acoustic vibrations the solution is dehydrated by 20-50% in vacuum drying conditions with extraction of the water condensate. ^ EFFECT: invention provides environmentally safe non-waste technology of processing distillery stillage and widens the range of processed products.