Methyl salicylate preparation apparatus

A technology for the preparation of methyl salicylate and equipment, which is applied in the field of chemical production and can solve the problems of uncollected methyl salicylate and high noise

Inactive Publication Date: 2019-09-24
ZHENJIANG GAOPENG PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing preparation of methyl salicylate is to esterify salicylic acid and methanol under the catalysis of sulfuric acid, but the reaction kettle used in the preparation of existing methyl salic...

Method used

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  • Methyl salicylate preparation apparatus
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  • Methyl salicylate preparation apparatus

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative im...

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PUM

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Abstract

The invention provides a methyl salicylate preparation apparatus. The apparatus comprises a reaction kettle, a dryer, a filtering apparatus and a distillation apparatus, wherein the reaction kettle is connected with a first material storage tank, a second material storage tank, a third material storage tank and a fourth material storage tank, salicylic acid is stored in the first material storage tank, anhydrous methanol is stored in the second material storage tank, concentrated sulfuric acid is stored in the third material storage tank, and a sodium carbonate solution is stored in the fourth material storage tank. The reaction kettle is stirred more uniformly, a reaction process is carried out quickly, the interior and internal components can be cleaned, and at the same time noise can be effectively reduced; methyl salicylate is more thoroughly recovered by the dryer; and methyl salicylate in the distillation apparatus is heated to evaporate water, distillation efficiency is high, and no reflux is carried out.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a methyl salicylate preparation device. Background technique [0002] Methyl salicylate is a colorless to pale yellow transparent liquid with a fragrance like wintergreen oil and can be used as a solvent and intermediate, such as the reaction of methyl salicylate with ammonia to produce salicylamide, which is used as an antipyretic and painkiller B Salicylamide itself is also an antipyretic and analgesic, which can be used in the manufacture of insecticides, fungicides, spices, paints, cosmetic inks, and fiber dyeing aids. [0003] The existing preparation of methyl salicylate is to esterify salicylic acid and methanol under the catalysis of sulfuric acid, but the reaction kettle used in the preparation of existing methyl salicylate has a lot of noise in the preparation process, and after being dried by a dryer, There is still some liquid remaining in the dryer, cont...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01J19/00B01F13/10B01D3/14B01D3/00B01D1/30B01D1/00C07C67/08C07C69/84
CPCB01J19/18B01J19/0066B01J19/0053B01J19/00B01D3/14B01D3/00B01D1/00B01D1/30C07C67/08B01F33/82C07C69/84
Inventor 李冕王成栋王成慧
Owner ZHENJIANG GAOPENG PHARMA
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