Saponification method

The invention provides a saponification method which comprises the following steps of: (1) feeding a chlorohydrin aqueous solution into a saponification tower, and carrying out a contact reaction on the chlorohydrin aqueous solution and an alkaline substance in the saponification tower; (2) introduc...

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Bibliographic Details
Main Authors WANG FAN, YANG JIANCHUN, ZHU RONGXIN
Format Patent
LanguageChinese
English
Published 09.11.2021
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention provides a saponification method which comprises the following steps of: (1) feeding a chlorohydrin aqueous solution into a saponification tower, and carrying out a contact reaction on the chlorohydrin aqueous solution and an alkaline substance in the saponification tower; (2) introducing steam into the tower bottom of the saponification tower for direct heating or indirect heating through a heat exchanger, stripping a gas-phase material flow containing epoxide from the top of the saponification tower, and extracting a high-temperature barren solution without epoxide from the bottom of the saponification tower; and (3) pressurizing the gas-phase material flow obtained at the top of the saponification tower and then taking the pressurized gas-phase material flow as a heat source for at least one of the purposes (i)-(iv): (i) supplying heat to the bottom of the saponification tower; (ii) heating the chlorohydrin aqueous solution entering the saponification tower; (iii) heating process water used f
Bibliography:Application Number: CN202010384517