A reaction device for the production of 2-methyl-3-trifluoromethylaniline

Abstract

The invention relates to the technical field of chemical equipment, and discloses a reaction device for producing 2-methyl-3-trifluoromethylaniline, comprising a reaction kettle and a recovery box, the top of the recovery box is threadedly connected to the bottom of the reaction kettle, and the reactor is fixed on the reaction kettle A dropper, a feeding pipe and a feeding pipe are provided, the dropping pipe is arranged on the side wall of the reaction kettle, the feeding pipe and the feeding pipe are arranged on the peripheral wall of the reaction kettle, a stirring device is arranged in the reaction kettle, and the stirring device There is a transmission device on the top, a scraper ring is fixedly connected to the top of the transmission device, a chassis is fixedly connected to the bottom of the reactor, a layering device is fixedly installed on the chassis, and a dripping device is fixedly connected to the side of the drip tube far away from the reactor. The device includes a rubber hose, and the invention can decompose the dimethyl sulfate, avoid the harm caused by the strong toxicity of the dimethyl sulfate, and can scrape off the residue on the inner wall of the reaction kettle in time to avoid waste.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, in particular to a reaction device for the production of 2-methyl-3-trifluoromethylaniline. Background technique [0002] Trifluoromethylaniline has three isomers, namely o-, m-, and p-trifluoromethylaniline. It is an important fluorine-containing organic intermediate and is widely used in medicine, pesticides, dyes and other fields, especially in the synthesis of many It is a new type of high-efficiency and low-toxic fluorine-containing pesticide, which has attracted much attention from the pesticide industry at home and abroad. [0003] At present, there are many technical routes for generating 2-methyl-3-trifluoromethylaniline. Among them, 2-chloro-5-(trifluoromethyl)aniline is used as a raw material, and is subjected to acylation, methylation, hydrogenolysis, The process method for obtaining MTA by hydrolysis is suitable for industrial production, wherein in the step of methylatio...

AI Technical Summary

Problems solved by technology

[0006] First, in the step of methylation, when the waste liquid is separated from the solid layer, the speed is relatively slow, and the product will remain on the inner wall of the reactor, resulting in waste of raw materials;

[0007] Second, the chemical reaction rate in the mixed liquid is not uniform, and it is easy to have a local reaction violently, while another part reacts slowly, which is prone to safety accidents;

[0008] Third, clogging is prone to occur when separating waste liquid and solids in the methylation step, which leads to the failure of normal separation and affects production efficiency

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