Low-Waste Technology of Production of Epychlorgydrin from Glycerol

Abstract

Glycerol is a byproduct of the rapidly developing in the world of production from renewable natural raw materials (fats and oils) biodiesel, liquid motor fuel. Promising direction of its recovery is the production of epychlorgydrin (EHC), a valuable intermediate of organic synthesis. In production of 1 t of EHC from glycerol formed to 6.3 tons salt aqueous solutions containing 0.8 – 0.9 of sodium chloride. It has been proposed and carried out energotechnolgical calculations of block schematical diagrams of isolation from the reaction mixture dried by isotropic distillation EHC and sodium chloride recovery by evaporation crystallization. It was shown that in Russia the industrial production of epychlorgydrin from glycerol fits perfectly into the structure of modern production of chlorine by electro membrane process followed vinyl chloride obtain by chlorine balanced method. Two-stage evaporation crystallization scheme allows you to return into production cycle of 89 – 91% by-produced sodium.