2-methylimidazole tubular continuous chemical reaction device and method

Abstract

The invention provides a 2-methylimidazole tubular continuous chemical reaction device and a 2-methylimidazole tubular continuous chemical reaction method. The 2-methylimidazole tubular continuous chemical reaction device comprises a raw material tank, a main pipeline and a PLC automatic control system integrated cabinet; the raw material tank comprises an ammonia water tank, an acetaldehyde tankand an oxalaldehyde tank; a first pipeline mixed reactor, a second pipeline mixed reactor, a third pipeline mixed reactor and a fourth pipeline mixed reactor are arranged on the main pipeline; a hot water heat-preserving section is arranged at the back end of the main pipeline through a connecting pipe; the PLC automatic control system integrated cabinet is arranged on one side of the hot water heat-preserving section; through the first pipeline mixed reactor, the second pipeline mixed reactor, the third pipeline mixed reactor and the fourth pipeline mixed reactor, the effect of performing continuous reaction on the raw materials can be achieved, the continuous reaction has high selectivity and is conducted completely, the quality of products obtained after continuous reaction can be improved, the mole yield of the continuous reaction can be increased, the raw materials in the reaction process are not in contact with the outside, and the reaction process has high safety.

Description

technical field [0001] The invention relates to the technical fields of medicine and chemical industry, in particular to a 2-methylimidazole tubular continuous chemical reaction device and method. Background technique [0002] 2-Methylimidazole is white to off-white crystalline powder, hygroscopic, soluble in water, alcohol, acetone and DMF, insoluble in benzene, toxic, irritating and corrosive to skin and mucous membranes, commonly used in production Drug intermediates such as metronidazole and dimetridazole; can be used as curing agents such as epoxy resins, auxiliary agents for fiber dyes, and additives in the preparation of foam plastics. [0003] The liquid-phase mixed reaction usually uses a batch-type tank reaction, which often has the problems of uneven mixing, long reaction time, and low conversion efficiency. In the existing 2-methylimidazole cyclization reaction production process, the first step is to mix ammonia Dialdehyde is added dropwise and mixed, and the s...

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Problems solved by technology

[0004] In view of the above problems, the present invention proposes that the raw materials can achieve the effect of continuous reaction through the first pipeline mixing reactor, the second pipeline mixing reactor, the third pipeline mixing reactor and the fourth pipeline mixing reactor, while the selectivity of continuous reacti

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