Method for preparing epoxidized fatty acid methyl esters in continuous flow microchannel reactor

A technology of epoxy fatty acid methyl ester and microchannel reactor, which is applied in the direction of organic chemistry, etc., can solve the problems of long process time, low epoxy value, difficult safety control, etc., to improve epoxy value, increase conversion rate, The effect of constant temperature

Active Publication Date: 2013-01-16
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is a new type of high-efficiency continuous flow production process proposed for the traditional production of epoxy fatty acid methyl ester with long process time, low epoxy value and difficult control of reaction process safety.

Method used

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  • Method for preparing epoxidized fatty acid methyl esters in continuous flow microchannel reactor
  • Method for preparing epoxidized fatty acid methyl esters in continuous flow microchannel reactor
  • Method for preparing epoxidized fatty acid methyl esters in continuous flow microchannel reactor

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Effect test

Embodiment 1

[0029] (1) Device: Corning high-throughput microchannel reactor, the number of straight channel modules is determined according to the number of material stocks, the number of mixed reaction modules is determined according to the flow rate and reaction residence time, and the module connection method refers to image 3 Make sure that the heat exchange medium is heat transfer oil.

[0030] (2) Catalyst preparation: Accurately weigh 640g of formic acid and 40g of concentrated hydrochloric acid, pour them into a beaker, stir evenly, and seal them for future use.

[0031] (3) Set the volume flow rate ratio of pump 1, pump 2, and pump 3 as formic acid catalyst: fatty acid methyl ester: hydrogen peroxide = 0.5:1:1. After the three materials are preheated and mixed by module 10 and module 11 respectively, they will enter module 12 when used To carry out the reaction, the circulating cooler set the reaction temperature to 42°C, and at this time, the molar ratio of fatty acid methyl es...

Embodiment 2

[0034] (1) Device: Corning high-throughput microchannel reactor, the number of straight channel modules is determined according to the number of material stocks, the number of mixed reaction modules is determined according to the flow rate and reaction residence time, and the module connection method refers to image 3 Make sure that the heat exchange medium is heat transfer oil.

[0035] (2) Catalyst preparation: Accurately weigh 640g of formic acid and 40g of concentrated hydrochloric acid, pour them into a beaker, stir evenly, and seal them for future use.

[0036] (3) Set the volume flow rate ratio of pump 1, pump 2, and pump 3 as formic acid catalyst: fatty acid methyl ester: hydrogen peroxide = 0.5:1:1.5. After the three materials are preheated and mixed by module 10 and module 11 respectively, they will enter module 12 when used To carry out the reaction, the circulating cooler set the reaction temperature at 42°C, and at this time the molar ratio of fatty acid methyl e...

Embodiment 3

[0039] (1) Device: Corning high-throughput microchannel reactor, the number of straight channel modules is determined according to the number of material stocks, the number of mixed reaction modules is determined according to the flow rate and reaction residence time, and the module connection method refers to image 3 Make sure that the heat exchange medium is heat transfer oil.

[0040] (2) Catalyst preparation: Accurately weigh 640g of formic acid and 40g of concentrated hydrochloric acid, pour them into a beaker, stir evenly, and seal them for future use.

[0041] (3) Set the volume flow rate ratio of pump 1, pump 2, and pump 3 as formic acid catalyst: fatty acid methyl ester: hydrogen peroxide = 1.0:1:2.5. After the three materials are preheated and mixed by module 10 and module 11 respectively, they will enter module 12 when used To carry out the reaction, set the reaction temperature to 42°C, and the molar ratio of fatty acid methyl ester to hydrogen peroxide is 1:2.5. ...

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Abstract

The invention relates to a method for preparing epoxidized fatty acid methyl esters by using a microchannel reactor. The method comprises the following specific steps of: preparing catalyst formic acid and concentrated hydrochloric acid in a certain proportion; pumping fatty acid methyl ester, a formic acid catalyst, and hydrogen peroxide into the microchannel reactor by using three metering pumps; and washing reaction products, separating and drying to obtain the final product epoxidized fatty acid methyl esters. The whole process is an exothermic reaction process, and peroxyformic acid and epoxidized fatty acid methyl esters are synthesized simultaneously. When the epoxidized fatty acid methyl esters are produced by the method, the temperature of the reaction process can be controlled effectively, high safety can be guaranteed, a module is good in mixing effect, and a product obtained through reaction is high in quality; and the continuous flow reaction is performed, the process is continuous, and high production efficiency is achieved.

Description

technical field [0001] The present invention relates to utilizing microchannel reactor to carry out fatty acid methyl ester epoxidation reaction, and specific content comprises utilizing the channel module that is made up of multiple miniature fully mixed flow structural units to be combined into enhanced mixing type microchannel reactor (such as Corning Inc. Corning Company's High-throughput microchannel reactor), the method of synthesizing the plasticizer epoxy fatty acid methyl ester by using the reactor is a process of completing the configuration of the oxidant peroxyformic acid in the microchannel reactor, preheating the raw materials, and epoxidation reaction process continuous flow process. The method can continuously and safely synthesize epoxy fatty acid methyl ester under the reaction condition of 30-70 DEG C. technical background [0002] Epoxy fatty acid methyl ester is a light yellow liquid at room temperature, and it is a new type of environmentally friendly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D301/12C07D303/42
Inventor 张跃俞佳娜严生虎刘建武沈介发
Owner CHANGZHOU UNIV
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