Device and method for preparing methyl oxo-phenylacetate

Abstract

The invention discloses a device and a method for preparing methyl oxo-phenylacetate, and belongs to the related field of chemical preparation. The device for preparing methyl oxo-phenylacetate comprises a shaft sleeve, a scouring block, a sliding cavity and a preparation box. A plurality of collecting grooves are formed in the outer circle face of the shaft sleeve, all the collecting grooves are arranged in a circumferential array with the rotating shaft as the circle center, and the side wall, close to the rotating shaft, of each collecting groove is an inclined face. An electromagnetic valve is fixedly arranged on the side wall of each collecting groove, a sliding block is slidably connected to the inner wall of the sliding cavity, a rotating shaft is rotatably arranged on the end face of the front side of the sliding block, the rotating shaft penetrates through the shaft sleeve, and the rotating shaft and the shaft sleeve are fixedly connected. According to the scheme, grease can be uniformly adsorbed and collected through moving and rotating collecting strips, and grease on the collecting strips can slide into the collecting grooves through gravity and easily collected.

Description

technical field [0001] The invention belongs to the related field of chemical preparation, and more specifically, relates to a device and a method for preparing methyl oxyphenylacetate. Background technique [0002] Methyl oxyphenylacetate has another name called methyl benzoylformate and methyl acetophenone. Its preparation method is to add sodium chloride and sulfuric acid in a reaction flask, stir at room temperature, add dropwise benzoyl nitrile, and control the temperature at At about 30°C, keep warm for 3 hours after the dropwise addition, then add methanol dropwise, heat up and reflux for 5 hours, and remove the methanol under reduced pressure after the reaction to obtain the finished product. From benzoyl acid and methanol by esterification reaction is obtained. Add cyclomethanol and benzoylformic acid into the reaction pot, and slowly add sulfuric acid while stirring. After heating to reflux for 12 hours, excess methanol was recovered. The esterified product was ...

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Problems solved by technology

[0003] In the reaction process of methyl oxophenylacetate, the extraction and reaction steps of oil are relatively complicated, and it needs to be manually collected and extracted slowly, which is a waste of time. Some existing extraction devices and methods for methyl oxophenylacetate Difficult to quickly extract and respond to the oil layer, it is difficult to meet the demand

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