Chemical reactions involving fine chemicals, environmental protection, and chemical drugsoften necessitate continuous operation, high selectivity, and utmost safety. Particularly, when dealingwith strong exothermic reactions, improper control can lead to fire or even explosions. Enhancements inmass transfer and heat transfer are crucial for addressing these challenges. Microreactors, in comparisonto conventional tank reactors, offer several advantages, including high mass and heat transferefficiency, precise control of reaction parameters, continuous operation, and enhanced efficiency andsafety. This review provides a comprehensive summary of research on microreactors in chemical engi⁃neering. First, the structural characteristics and advantages of microreactors are analyzed. Next, thestrategies employed in the design of microreactors to enhance mass and heat transfer are summarized.The applications of microreactors in typical strong exothermic reactions are then introduced. Finally, thereview concludes by highlighting the importance, opportunities, and challenges associated with micro⁃reactor technology. The objective of this review is to provide guidance for the design, manufacturing,and application of microreactors in the industry.
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