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Micro-channel reactor and application thereof

A microchannel reactor and microchannel technology, applied in chemical/physical/physicochemical reactors, chemical instruments and methods, organic chemistry, etc., can solve problems such as inability to effectively control temperature and affect the normal and orderly progress of reactions

Active Publication Date: 2022-01-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of reaction heat is released during the reaction, and the temperature cannot be effectively controlled in the traditional reactor, which affects the normal and orderly progress of the reaction.

Method used

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  • Micro-channel reactor and application thereof
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  • Micro-channel reactor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] (1) Device construction: The main body of the microchannel reactor is made of stainless steel 316L. Micron-scale grooves are manufactured on the reaction substrate through precision machining. The plane of the heat exchange substrate is pressed and sealed with the reaction substrate to form a micron-scale channel. The inner member of the porous sieve plate is built in the position of the channel. The specific arrangement and size are: the hydraulic diameter of the fluid channel in the distribution area is 1200 microns, and the total length is 5 cm. The hydraulic diameter of the fluid channel in the reaction area is 500 microns, and the total length is 5 cm. The width of the built-in porous sieve plate internal member between the fluid channels in adjacent reaction areas is equal to the width of the fluid channels in the reaction area. The hydraulic diameter of the micropores is 50 microns, the porosity is 80%, and the thickness of the heat exchange substrate is 2.5 cm, t...

Embodiment 2

[0094] All the steps in this example are basically the same as in Example 1, except that the hydraulic diameter of the fluid channel in the distribution area is 2000 microns, and the total length is 1 cm; the product analysis results show that the conversion rate of 2-pyrrolidone is 93.2%. The selectivity to N-vinylpyrrolidone was 86.5%.

Embodiment 3

[0096] All the steps in this example are basically the same as in Example 1, except that the hydraulic diameter of the fluid channel in the distribution area is 500 microns, and the total length is 8 cm; the product analysis results show that the conversion rate of 2-pyrrolidone is 97.2%, The selectivity to N-vinylpyrrolidone was 81.2%.

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Abstract

The invention discloses a micro-channel reactor. The micro-channel reactor comprises: reaction substrates; heat exchange substrates, wherein the heat exchange substrates and the reaction substrates are alternately stacked, a micro-channel unit is formed between the adjacent reaction substrate and heat exchange substrate, each micro-channel unit comprises a plurality of reaction area fluid channels arranged at intervals, and porous medium inner components are arranged between the adjacent reaction area fluid channels; raw material inlets, which are respectively formed in the two opposite sides of the micro-channel units and communicate with the reaction area fluid channels so as to allow raw materials entering from the raw material inlets in the two opposite sides to form countercurrent contact in the reaction area fluid channel through the porous medium internal component and to undergo mass transfer and reaction; and a collecting component, which communicates with the fluid channels of the reaction areas and is used for collecting reaction products. The invention further provides a reaction method adopting the micro-channel reactor and application of the micro-channel reactor.

Description

technical field [0001] The invention relates to the field of microchannel devices, in particular to a microchannel reactor and its application. Background technique [0002] Microchannel technology refers to the process intensification technology of chemical reaction, heat exchange, mixing and separation in the three-dimensional structure process fluid channel with the characteristic size of micron, which can significantly improve the efficiency of heat and mass transfer and space utilization, and realize the control of reaction conditions. Precise control with intrinsic safety. In recent years, microchannel reaction technology has achieved rapid development in the fields of fine chemical industry and pharmaceutical chemical industry. [0003] Due to the characteristics of high-efficiency conversion and continuous production of microchannel reaction technology, it has obvious advantages and broad application prospects for the synthesis of fine chemicals with severe thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C07D207/267
CPCB01J19/0093C07D207/267B01J2219/00783B01J2219/00891B01J2219/00822B01J2219/00824
Inventor 储博钊钟思青王菊马俊
Owner CHINA PETROLEUM & CHEM CORP
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