PURIFICATION METHOD OF CRUDE GLYCERIN THROUGH A DISTILLATION PROCESS CAPABLE OF OBTAINING GLYCERIN WITH EXCELLENT TRANSPARENCY AND LOW TURBIDITY THROUGH A DISTILLATION AND DECOLORIZATION PROCESS

摘要

PURPOSE: A purification method of crude glycerin is provided to purify crude glycerin to glycerin of high purity during distillation process, to improve production amount and yield through a continuous mass production.;CONSTITUTION: A purification method of crude glycerin comprises: a step of heating crude glycerin of which glycerin content is 10-93 weight% to 50-200 °C; a step of supplying the crude glycerin to a distillation reactor; a step of heating the crude glycerin to 100-300 °C; a step of supplying dry steam from lower part of the distillation reactor; and a step of distillation glycerin in the distillation reactor; and a step of gradually cooling the distilled glycerin to room temperature.;COPYRIGHT KIPO 2013