FIELD: technological processes.
SUBSTANCE: present invention relates to a continuous method of producing glyoxal by oxidation of ethylene glycol with atmospheric oxygen in a mixture with recirculating inert gas on a catalyst containing silver. Recirculating gas used as a diluent and ethylene glycol solution entering reactor are successively pre-heated by heat generated during oxidation of ethylene glycol at catalyst, and cooling of reaction products is performed in successively by their irrigation with cooled solution of glyoxal in a zone lying immediately behind catalyst layer and in tubular sub-contact 2-sectional heat exchanger, in lower section of which ethylene glycol is heated, and in upper section - heating of recirculating gas used as a diluent.
EFFECT: proposed method enables to obtain an end product with high output.
7 cl, 3 dwg, 1 tbl, 3 ex
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