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LOW-WASTE TECHNOLOGY OF GLYCIDOL PRODUCTION BY PEROXIDE METHOD

https://doi.org/10.32362/24106593-2018-13-3-49-56

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Abstract

A technological process of manufacturing glycidol designed for the production capacity of 10 thousand tons per year and consisting in the direct oxidation of allyl alcohol with an aqueous solution of hydrogen peroxide in the presence of nanostructured titanium silicate in methanol is proposed. Due to the exothermic process, the solvent is not only a homogenizer of the mixture of the initial reagents of the epoxy process - allyl alcohol and hydrogen peroxide ensuring their interaction on the surface of the solid catalyst: it also prevents overheating of the reaction mass. On the basis of the research trial of the process the optimal parameters of the process were determined: temperature 30-40 °C; pressure 0.25 MPa; the initial hydrogen peroxide : allyl alcohol ratio = 1:(3-4) mass., methanol concentration in the reaction mixture 12-13 mol/l. Hydrogen peroxide conversion is 98%, the yield of the glycidol - 94%, the selectivity is no less than 95%. The process includes three main stages: (1) raw materials preparation, (2) liquid-phase epoxidation of allyl alcohol, (3) distillation of the target product. The scheme involves recirculation of unreacted allyl alcohol and the solvent - methanol. The developed technological process provides the following indicators (per 1 t of commercial glycidol): consumption of allyl alcohol no more than 0.843 t; consumption of hydrogen peroxide no more than 0.50 t (calculated for 100% hydrogen peroxide); consumption of methanol is no more than 0.022 tons All the waste products correspond to the 3-rd or 4-th hazard class.

About the Authors

S. V. Leont'eva
MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)
Russian Federation

Ph.D. (Chem.), Associate Professor of the Chair of Environmental and Industrial Safety

86, Vernadskogo Pr., Moscow 119571, Russia



M. R. Flid
LLC Research Engineering Center "Sintez"
Russian Federation

D.Sc. (Eng.), CEO Research Engineering

86, Vernadskogo Pr., Moscow 119571, Russia



M. A. Trushechkina
LLC Research Engineering Center "Sintez"
Russian Federation

Senior Research Associate

86, Vernadskogo Pr., Moscow 119571, Russia



M. V. Babotina
LLC Research Engineering Center "Sintez"
Russian Federation

Senior Research Associate

86, Vernadskogo Pr., Moscow 119571, Russia



V. R. Flid
MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)
Russian Federation

D.Sc. (Chem.), Professor, Head of Ya.K. Syrkin Chair of Physical Chemistr

86, Vernadskogo Pr., Moscow 119571, Russia



A. V. Sulimov
Dzerzhinsky Polytechnic Institute
Russian Federation

D.Sc. (Eng.), Professor of the Chair "Technology of Organic Substances"

49, Gaidara St., Dzerzhinsk, 606026 Russia



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For citation:


Leont'eva S.V., Flid M.R., Trushechkina M.A., Babotina M.V., Flid V.R., Sulimov A.V. LOW-WASTE TECHNOLOGY OF GLYCIDOL PRODUCTION BY PEROXIDE METHOD. Fine Chemical Technologies. 2018;13(3):49-56. (In Russ.) https://doi.org/10.32362/24106593-2018-13-3-49-56

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