Separation von Feststoffen aus Fetten und Ölen durch Elektrophorese

Separation of Solids from Fats and Oils by Electrophoresis The development of PETRECOR ELECTROFILTER^TM SEPARATOR provides the food industry with plants that enable the separation of solid particles, including those in the submicron region (< 0.5 μm), from fats and oils with the aid of high-voltage electrical field. The most important commercial application is the removal of bleaching earth and nickel catalyst; a final polishing filtration becomes unnecessary. Results of pilot plant operation show, for example in the removal of nickel catalyst from hydrogenated soybean oil, a continuous reduction of nickel from 500 ppm to < 0.15 ppm. These plants are completely closed systems under slight pressure with a definite precalculated capacity for solids; the latter can be removed by a simple regeneration process involving rinsing with the product to be treated. This regenerating liquid is a pumpable suspension containing ca. 5% solids; it is subjected to further treatment. Plants of various sizes with respect to maximum flow rate and capacity are available. The layout is always done for the specific application.