Dehydration and water division device for MAQ-ME (R-(+)-2-(4-Hydroxyphenoxy) synthesis

Abstract

The invention discloses a dehydration and water division device for MAQ-ME (R-(+)-2-(4-Hydroxyphenoxy) synthesis. The dehydration and water division device comprises a reaction kettle, a condenser, a gas-liquid separator and a water receiver, wherein the condenser is connected with the top part of the reaction kettle through an evaporation tube; the evaporation tube is a liquid sealing U-shaped tube; the condenser is arranged at the top part of the gas-liquid separator; the side wall of the gas-liquid separator is connected with the top part of the reaction kettle through a separator guide tube; the bottom of the gas-liquid separator is connected with the top part of the water receiver through a water division guide tube; and each of the separator guide tube and the water division guide tube is provided with a valve. By utilizing the dehydration and water division device disclosed by the invention, due to adoption of the condenser providedwith the liquid sealing U-shaped tube and used for external return flow, the cooling water inside the condenser is prevented from leaking to the reaction kettle, and water which is easy to be vaporized in the reaction can be rapidly removed in real time, so that reaction raw materials can be reacted more sufficiently, and the product yield is improved; and moreover the vaporized raw materials can flow back to the reaction kettle after being condensed by the gas-liquid separator, so that the raw materials are not lost, and the reaction energy is saved.

Description

technical field [0001] The invention relates to a dehydration device, in particular to a dehydration device used in a MAQ-ME synthesis process, and belongs to the technical field of chemical equipment. Background technique [0002] The synthesis of R-(+)-2-(4-hydroxyphenoxy)propionic acid methyl ester (chemical name MAQ-ME) generally uses R-(+)-2-(4-hydroxyphenoxy)propionic acid And methanol esterification synthetic route. The reaction produces methyl R-(+)-2-(4-hydroxyphenoxy)propionate and water. [0003] In the prior art, no other measures are generally taken during the MAQ-ME reaction process. The water generated by the reaction will affect the reaction efficiency of the product, make the raw materials participating in the reaction insufficiently reacted, and affect the reaction speed, waste energy, and reduce the utilization of raw materials. rate decreased. Contents of the invention [0004] The purpose of the present invention is to solve the above-mentioned tech...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, no other measures are generally taken during the MAQ-ME reaction process. The water generated by the reaction will affect the reaction efficiency of the product, make the raw materials participating in the reaction insufficiently reacted, and affect the reaction speed, waste energy, and reduce the utilization of raw materials. rate reduction

Images