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Methyl/ethyl maltol chlorination section production process

A technology of ethyl maltol, production process, applied in the direction of chemistry/physics/physicochemical process, chemistry/physics/physicochemical fixed reactor, detailed information of chemistry/physics/physicochemical reactor, etc., able to solve chlorine Low chemical reaction conversion rate, many by-products, shortened reaction time and other problems, to achieve easy reaction temperature, fast reaction speed, and reduce side reactions

Active Publication Date: 2020-07-28
广东省肇庆华格生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the low conversion rate and many by-products of the chlorination reaction in the existing methyl / ethyl maltol production, and the existing maltol pipeline chlorination reaction method simply prolongs the passage time of the reactants so that the reaction materials can fully contact The unsatisfactory problem provides a formazan that shortens the reaction time, effectively reduces the side reaction of the chlorination reaction in the production of methyl / ethyl maltol, and improves the conversion rate of the chlorination reaction in the production of methyl / ethyl maltol. Base / Ethyl Maltol Chlorination Section Production Process

Method used

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  • Methyl/ethyl maltol chlorination section production process
  • Methyl/ethyl maltol chlorination section production process

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Effect test

Embodiment 1

[0024] A kind of production process of methyl / ethyl maltol chlorination section, it is characterized in that: comprise the following steps:

[0025] a: refer to figure 1 , a pipeline reactor is set, the pipeline reactor includes an inner tube and a jacket, one end of the inner tube is a feed inlet, and the other end is a discharge outlet, and the feed inlet and the discharge outlet of the inner tube are The protruding jacket is set, and the inner pipe near the feed port is provided with a chlorine pipe. The chlorine pipe is L-shaped as a whole, and the top of the chlorine pipe is connected to the liquid chlorine buffer tank through a solenoid valve. The outlet of the chlorine pipe Located on the axis of the inner tube and the outlet points to the discharge port of the inner tube, a fixing frame is arranged at the outlet end of the chlorine pipe, and a distributing device is arranged at the end of the fixing frame, and the distributing device is a conical Shaped thin plate, ro...

Embodiment 2

[0032] A kind of production process of methyl / ethyl maltol chlorination section, it is characterized in that: comprise the following steps:

[0033] a: refer to figure 1, a pipeline reactor is set, the pipeline reactor includes an inner tube and a jacket, one end of the inner tube is a feed inlet, and the other end is a discharge outlet, and the feed inlet and the discharge outlet of the inner tube are The protruding jacket is set, and the inner pipe near the feed port is provided with a chlorine pipe. The chlorine pipe is L-shaped as a whole, and the top of the chlorine pipe is connected to the liquid chlorine buffer tank through a solenoid valve. The outlet of the chlorine pipe Located on the axis of the inner tube and the outlet points to the discharge port of the inner tube, a fixing frame is arranged at the outlet end of the chlorine pipe, and a distributing device is arranged at the end of the fixing frame, and the distributing device is a conical Shaped thin plate, rou...

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Abstract

The invention discloses a methyl / ethyl maltol chlorination section production process. The process comprises the following steps: arranging a pipeline reactor with a specific structure; pumping the pre-cooled methanol aqueous solution into the pipeline reactor from an inner pipe feeding hole of the pipeline reactor; introducing chlorine through a chlorine introducing pipe, and meanwhile, pumping an alpha-furanol solution into a feeding opening of the inner pipe; by means of the flow mixing plate and the turbulence device, enabling the materials in the inner pipe of the pipeline reactor to be in a turbulence state, wherein the contact faces between the materials are continuously updated, so that gas-liquid mixing is enhanced, and therefore, the chlorination reaction efficiency is effectively improved, the side reaction of chlorination reaction is reduced, and therefore the yield of maltol / ethyl maltol is increased.

Description

technical field [0001] The invention relates to the technical field of flavor essence production, in particular to a methyl / ethyl maltol chlorination section production process. Background technique [0002] At present, in industrial production, maltol and ethyl maltol are often produced by synthetic route using furfural as raw material. It is widely used because of the advantages of easy-to-obtain raw materials, simple production process, low production cost, less three wastes, and easy to achieve conditions. The process steps are as follows: firstly, Grignard reagent is prepared with halogenated hydrocarbon and magnesium as the main raw materials, then furfural and Grignard reagent react to synthesize α-fural alkanol, and then through a series of oxidation reactions, maltol and ethyl malt are finally obtained phenol. Prepare maltol and ethyl maltol synthetic route by furfural as follows: [0003] [0004] In view of the fact that the chlorination reaction in the produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D309/40B01J19/00B01J19/24
CPCB01J19/0053B01J19/006B01J19/2415B01J2219/0072B01J2219/0077B01J2219/182C07D309/40
Inventor 彭志强李俊召温细坤覃伟华
Owner 广东省肇庆华格生物科技有限公司