A continuous production apparatus for methyl salicylate

By using a supergravity dynamic liquid film reactor and a continuous production device, the problems of high risk, large batch-to-batch variability, and low efficiency in the production of methyl salicylate have been solved, and efficient and safe production of methyl salicylate has been achieved.

CN118236947BActive Publication Date: 2026-05-26QINGDAO UNIV OF SCI & TECH +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
QINGDAO UNIV OF SCI & TECH
Filing Date
2024-02-19
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing methyl salicylate production system is intermittent, which has problems such as high risk, large batch-to-batch variability and low production efficiency.

Method used

A continuous production device is adopted, which includes components such as a salicylic acid storage tank, a screw feeder, a high-gravity dynamic liquid film reactor, and a combined cooling and heating unit. The high-gravity dynamic liquid film reactor realizes the continuous feeding and discharging of materials, and combined with the recycling and post-processing of methanol, the level of production automation is improved.

Benefits of technology

It significantly reduces reaction time, improves production efficiency, stabilizes product quality, reduces energy consumption, and achieves a continuous and controllable production process.

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Abstract

This invention discloses a continuous production apparatus for methyl salicylate, comprising a salicylic acid storage tank, a dissolving vessel, a methanol storage tank, a concentrated sulfuric acid storage tank, a high-gravity dynamic liquid film reactor, a combined cooling and heating unit, a flash evaporator, a condenser, a methanol collection tank, a phase separator, an acid phase storage tank, a MIC high-efficiency mixer, a 10% sodium hydroxide solution storage tank, and a centrifuge. The salicylic acid and methanol storage tanks are connected to the dissolving vessel. The dissolving vessel, concentrated sulfuric acid storage tank, and combined cooling and heating unit are connected to the high-gravity dynamic liquid film reactor. The high-gravity dynamic liquid film reactor is connected to the flash evaporator. The flash evaporator is connected to the condenser and the phase separator. The condenser is connected to the methanol collection tank. The phase separator is connected to the acid phase storage tank and the MIC high-efficiency mixer. The MIC high-efficiency mixer is connected to the 10% sodium hydroxide solution storage tank and the centrifuge. This invention enables continuous production of methyl salicylate, solving the problems of high risk, large batch-to-batch variability, and low process efficiency associated with existing batch reactors.
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