FIELD: chemistry.
SUBSTANCE: claimed invention relates to a method of converting glycerol into propyleneglycol, applied as a "pollution-free" non-toxic antifreeze and chemical de-icer. The method consists in the hydrogenation of glycerol in the presence of a catalyst and includes the following stages: preliminary heating of a raw material mixture, which contains glycerol, hydrogen and methanol, in a reagent heater, supply of the heated raw material mixture into the reactor, separation of the flow, output from the reactor, into a vapour phase flow and a liquid phase flow, condensation of the vapour phase flow with obtaining a condensed liquid, return of the condensed liquid into the cycle in the reactor and distillation of the liquid phase flow with obtaining of purified propyleneglycol.
EFFECT: claimed method makes it possible to obtain the target product with high selectivity.
10 cl, 1 dwg, 1 ex
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