Microchannel reactors are of great significance in the chemical industry

A microchannel reactor is a reaction device with a specific microstructure, and the microstructure is the core of the microreactor, and different forms of microreactors can be designed according to different types of microstructures
.
In the design and manufacture of microreactors, there are tube structures that simply mix two reactants to form a product, and microreactors that integrate more complex multifunctional composite structures such as injection, mixing, quenching, crystallization, extraction, encapsulation, and phase separation
.
Microreactor requirements for corrosion resistance, high temperature resistance (200 °C), high pressure resistance (100 bar) and other properties, suitable for a variety of chemical reactions, with high heat transfer and mass transfer performance
.
For continuous chemical industry, it is not only required to have the characteristics of mass transfer and heat transfer, ultra-high throughput, high temperature and high pressure resistance, but also has the advantages of continuous sealing, fast and controllable, simple amplification, and easy disassembly and maintenance of mechanical connections, which provides an important way
for the chemical process to strengthen "better", "faster", "more economical", "safer and more environmentally friendly".
According to the different processing conditions, the microchannel reactor can use raw materials such as glass, silicon wafer, quartz, fluoropolymer, metal and ceramics, and be processed by
etching, lithography and mechanical processing.
The diameter of the channel is generally in the micron or millimeter range, which is much smaller than the characteristic size
of conventional pipeline reactors.
However, this size is still large for reactions at the molecular level, so the use of microreactors can not change the reaction mechanism and eigenkinetics, but by changing the heat, mass transfer and flow characteristics of the fluid to strengthen the
chemical process.
At present, a large number of studies and related reports have been carried out on microreaction technology at home and abroad, and studies have shown that the miniaturization of the characteristic scale of the reactor can significantly improve the conversion and selectivity of the reaction, strengthen the heat transfer performance and mass transfer performance significantly, and can better ensure the uniform flow
of the fluid in the reactor.
Micro-reaction technology relies on its advantages to become an important means to achieve chemical process strengthening, energy saving, safety and cleanliness, and its development and application are of great significance
to the entire chemical and chemical field.