Numerical Analyses of Competitive-Consecutive Reactions in Microreactors

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Tsutomu Kawamura¹  Masashi Oda²  Tomofumi Shiraishi¹ 

[1] Power & Industrial Systems R&D Laboratory, Hitachi, Ltd.;Hitachi Plant Technologies, Ltd.

关键词: Microreactor;    Microchannel;    Micromixer;    Competitive-Consecutive Reactions;    Synthesis;    Multilayer Flow;    Laminar Flow;   

DOI  :  10.1252/jcej.07WE137

来源: Maruzen Company Ltd

【 摘 要 】

References(6)Cited-By(2)Numerical analyses were conducted for competitive-consecutive reactions in laminar flow to clarify the mechanism responsible for improvements to product yield with microreactors. The conservation equations of species were non-dimensionalized to derive the dimensionless numbers that governed the flow and reaction in microchannels. Three dimensionless numbers were derived: Peclet number Pe, i.e., the ratio of the diffusion time to the convection time, mixing-reaction number φ, i.e., the ratio of the diffusion time to the reaction time, and K, i.e., the ratio of the secondary reaction rate constant to the primary reaction rate constant. As a result of the numerical analyses of the competitive-consecutive reactions for multilayer laminar flow in microchannels, under conditions where convection was more dominant than diffusion Pe > 10, the product yield of the primary reaction depended on φ and K. A diagram to evaluate product yield was prepared using φ and K. The product yield increased with decreasing φ and K.

【 授权许可】

Unknown