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Micro-channel reaction system and method for preparing epoxy compound

An epoxy-based compound and microchannel reaction technology, which is applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical chemical processes, etc., can solve environmental pollution, low purity and other problems, and achieve environmental friendliness and high product quality. High purity and reduced leakage of raw materials

Inactive Publication Date: 2021-08-20
袁相质
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problems of safety, environmental pollution and low purity in the production of epoxy-based compounds in the prior art, the application provides a microchannel reaction system and a method for preparing epoxy-based compounds, which are convenient for harvesting high-purity epoxy-based compounds , with the characteristics of production safety and environmental friendliness

Method used

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  • Micro-channel reaction system and method for preparing epoxy compound
  • Micro-channel reaction system and method for preparing epoxy compound
  • Micro-channel reaction system and method for preparing epoxy compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1a

[0058] The application provides a microchannel reaction system, which is applicable to the preparation of epoxy compounds, see figure 1 , including mixer 1, microchannel reactor and finished product tank 2.

[0059] The mixer 1 can be a microchannel mixer or a homogeneous emulsification pump, both of which are commonly used by those skilled in the art. In this embodiment, a homogeneous emulsification pump is specifically used as an example for illustration. Epoxy compounds, reaction initiators and other materials are strictly designed to control the corresponding molar ratios according to the molecular design of the target product. They are mixed into a mixture by mixer 1. Other materials can include materials used to promote reactions such as homogeneous catalysts, or can be are other auxiliary raw materials, which can be adjusted according to the desired product. The microchannel reactor includes a microchannel preheating section 3 and a microchannel reaction section 4, and...

Embodiment 1b

[0076] A kind of microchannel reaction system, the difference with embodiment 1a is, see Figure 4 , the microchannel reaction section 4 of this embodiment is formed by parallel connection of two sets of the same series structure as that in embodiment 1a, thereby increasing the preparation path and increasing the output of epoxy compounds under the premise of ensuring sufficient reaction.

Embodiment 1c

[0078] A kind of microchannel reaction system, the difference with embodiment 1a is, also be provided with heterogeneous catalyst in the microchannel reaction section 4 of present embodiment, heterogeneous catalyst exists in microchannel reaction section 4 internal memory with solid form In one or more process microchannels, or as a coating form of one or more process microchannel walls existing in the reaction section 4 of the microchannel. In this embodiment, the heterogeneous catalyst is specifically located in each process microchannel as an example for illustration.

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Abstract

The invention relates to a micro-channel reaction system and a method for preparing an epoxy compound. The micro-channel reaction system comprises a mixer and a micro-channel reactor; materials are fed according to the molecular design molar ratio of a target product and mixed into a mixture through the mixer; the micro-channel reactor comprises a micro-channel preheating section and a micro-channel reaction section, and the mixture is preheated through the micro-channel preheating section and then introduced into the micro-channel reaction section for reaction. According to the method, the raw materials are directly mixed and preheated, all the raw materials are fully mixed and react according to molecular design simulation positions, meanwhile, the reaction is controlled by adjusting the feeding speed of the mixture, and the temperature rise and the pressure rise caused by reaction heat release are both lower than design temperature and design pressure, and the design temperature and the design pressure are both lower than the highest bearing temperature and the highest bearing pressure of the equipment, so that safe reaction can be ensured under the condition that the reaction is out of control. Therefore, the reaction for preparing the epoxy compound is intrinsically safe and is more environment-friendly, and a product with higher purity is obtained.

Description

technical field [0001] The application relates to the technical field of epoxy compounds, more specifically, it relates to a microchannel reaction system and a method for preparing epoxy compounds. Background technique [0002] Epoxy compounds are a basic product of non-ionic surfactants, most of which use epoxy compounds such as ethylene oxide as raw materials, and are produced by batch reaction in a stirred reactor. [0003] However, ethylene oxide is a toxic carcinogen, which is a class I carcinogen announced by the World Health Organization. The occupational exposure threshold limit is 1PPM, and the average allowable concentration in the workplace is 2mg / m 3 , and the explosion limit (v / v) is 3%-100%, which is extremely dangerous. Although there is a dynamic seal on the stirring device in the reactor with stirring, the seal cannot be guaranteed to be completely and reliably sealed at any time. The possibility of ethylene oxide leaking from the dynamic seal of the stirri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C07D303/36C07D301/00
CPCB01J19/0093B01J19/0013B01J19/0053C07D303/36C07D301/00
Inventor 袁相质章黎笋杨忠
Owner 袁相质
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