Glycerol distillation process

Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material

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203 49, 203 80, 203 87, 203 98, 203 99, 203DIG19, 203 89, 202186, 202205, 202236, 568854, 568869, 159 49, 159 5, B01D 334, B01D 122

Patent

active

046558799

ABSTRACT:
An improved process for purification of glycerol obtained from natural sources comprising alkalizing a glycerol-containing crude mixture in the presence of air for oxidation, evaporating the mixture in a thin-layer evaporator with redistillation of the residue, rectification and reevaporation in a packed column characterized by low-pressure-loss plates with a falling-film evaporator designed for internal and external partial condensation and to separate off unwanted constituents of the mixture, bleaching the product with activated carbon and separating the bleach in known manner.

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patent: 4009188 (1977-02-01), Heim et al.
patent: 4225394 (1980-09-01), Cox et al.
D'Souza, "The Importance of Glycerol in the Fatty Acid Industry", Journal of the American Oil Chemists Society, vol. 56, pp. 812A-819A (1979).
Stromquist et al., "C. P. Glycerol by Ion Exchange", Industrial and Engineering Chemistry, vol. 53, pp. 1065-1070 (1951).
Ziels, "Recovery and Purification of Glycerol", The Journal of the American Oil Chemists Society, vol. 33, pp. 556-565 (1956).
Chemical Abstract 72:1970 42752p "Preparation of Alpha-Diamines from Epoxides".

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