Maintainable methylsulfonylbenzene synthesis device

Abstract

The invention provides a maintainable methylsulfonylbenzene synthesis device which comprises a delivery pump, a chloromethane guide pipe, methylation kettles, a heat accumulating type incinerator, a flow dividing tower, a saline water guide pipe, a washing tower, a feeding pipe, a controllable water inlet frame structure, a rotary cleaning frame structure, a discharge valve, a centrifugal machine,a methylsulfonylbenzene guide pipe, a mixing and stirring device and a waste collecting frame structure. The delivery pump is communicated with the left upper side of the methylation kettle through apipeline; the chloromethane guide pipes are respectively communicated with the right lower side of the methylation kettle; the number of the methylation kettles is four, and the methylation kettles are sequentially arranged downwards from left to right. The side scraping plate screws are installed at the ends, away from the transmission rod, of the transverse rods and make contact with the innerwall of the washing tower at the same time, the cleaning motor can conveniently drive the side scraping plates to rotate through the transverse rods by means of the transmission rod during use, and therefore the inner wall of the washing tower can be conveniently cleaned.

Description

technical field [0001] The invention belongs to the technical field of synthesis devices, in particular to a maintainable methylsulfonylbenzene synthesis device. Background technique [0002] 1-methyl-4-methylsulfonylbenzene is widely used in the synthesis of pharmaceutical antibiotic thiamphenicol, pesticide herbicide mesotrione and organic synthesis intermediates, and has considerable application value. At present, there is a mature method for synthesizing 1-methyl-4-methylsulfonylbenzene. Sodium 4-toluenesulfinate is obtained through the methylation reaction of dimethyl sulfate. Dimethyl sulfate is a highly toxic drug that is harmful to the human body. It is very harmful to the environment, and the use of batch reactors has great environmental pollution and high labor intensity. There are also some synthesis techniques with multiple reactors connected in series. The pressure of each reactor connected in series is different, so it is not suitable for overflow reaction. ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a maintainable methylsulfonylbenzene synthesis device to solve the problem that the existing synthesis device does not have the ability to clean and maintain the inner wall of the washing tower according to the requirements, and it is inconvenient to discharge the waste. With the ability to control the temperature of the liquid, it is inconvenient to collect and mix the remaining and falling slag after burning.

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