07-07-2023 дата публикации
Номер: CN116396150A
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The invention relates to the technical field of organic synthesis, and particularly discloses a production process of formaldehyde. The formaldehyde production process comprises the following steps: S1, preparing a catalyst bed layer: sequentially filling a reactor with a first layer, a second layer and a third layer to form the catalyst bed layer; s2, pretreating the catalyst bed layer: introducing air into the catalyst bed layer obtained in the step S1, heating, preserving heat for a period of time, and purging with nitrogen to obtain the pretreated catalyst bed layer; s3, preparing formaldehyde: introducing mixed gas of methanol, oxygen, inert gas and water vapor into the pretreated catalyst bed layer obtained in the step S2, carrying out oxidation reaction, carrying out dealcoholization after the reaction is finished, and adding a polymerization inhibitor to obtain formaldehyde; the production process has the advantages of simple steps, high methanol conversion rate and high formaldehyde ...
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