PROCESS FOR REMOVING POLAR COMPONENTS TO IMPROVE BIODIESEL PERFORMANCE AT LOW TEMPERATURES

摘要

The present invention describes a process which guarantees the removal of the insoluble polar pollutants present in biodiesel that give rise to the formation of precipitates at temperatures above cloud point and dramatically affect its performance at low temperatures. The biodiesel obtained through the process described in the present invention guarantees that the strictest requirement is fulfilled in international legislation for cold filtration, thereby guaranteeing the production of high-quality industry-grade biodiesel. The process consists basically of two steps: the first is adsorption in a reactor batch and the second is the transfer of the polar chemical components left over from the first step. In both steps, a natural or acid-activated aluminosilicate is used as an adsorbent.