System and method for preparing high-concentration formaldehyde from methylal

The invention discloses a system for synthesizing high-concentration formaldehyde from methylal. The system comprises a formaldehyde synthesis unit and a formaldehyde absorption unit which are connected in sequence; the formaldehyde synthesis unit comprises a tubular fixed bed reactor, and a conduct...

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Bibliographic Details
Main Authors LI GUICHENG, DONG YUNHAI
Format Patent
LanguageChinese
English
Published 12.11.2021
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a system for synthesizing high-concentration formaldehyde from methylal. The system comprises a formaldehyde synthesis unit and a formaldehyde absorption unit which are connected in sequence; the formaldehyde synthesis unit comprises a tubular fixed bed reactor, and a conduction oil circulation unit, a methylal pretreatment unit and a product cooling unit which are connected with the tubular fixed bed reactor, and the methylal pretreatment unit exchanges heat with the product cooling unit; the purity of the prepared formaldehyde can reach 75% +/-5 in one step, the problems of low conversion rate, selectivity and yield in the conventional formaldehyde production process are solved, the production unit consumption is reduced, the downstream application space of the formaldehyde is improved, and the system and method have wide application prospects and remarkable economic, social and environmental benefits. 本发明公开了一种甲缩醛合成高浓度甲醛的系统，包括依次连接的甲醛合成单元、甲醛吸收单元；甲醛合成单元包括管式固定床反应器，以及与管式固定床反应器连接的导热油循环单元、
Bibliography:Application Number: CN202010343890