A pore-scale model for microfibrous ammonia cracking microreactors via lattice Boltzmann method

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• 作者：Gholam Reza Molaeimanesh…
• 关键词：Ammonia Cracking Microreactor ; Lattice Boltzmann Method ; Pore ; scale Model ; Microfibrous Microreactor ; Post Microreactor
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：33
• 期：4
• 页码：1211-1219
• 全文大小：1,197 KB
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• 作者单位：Gholam Reza Molaeimanesh (1)
  Mohammad Hosein Sanati Davarani (1)
  
  1. Research Laboratory of Automotive Fluids and Structures Analysis, Automotive Engineering School, Iran University of Science and Technology, Tehran, 16846-13144, Iran
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220

文摘

Microfibrous microreactors with high reactive surface-to-volume ratio are good choices for ammonia cracking, which is one of the main strategies for CO-free hydrogen production. In the current study, a numerical model based on the lattice Boltzmann method (LBM) is presented to investigate ammonia cracking microreactors with coupled physiochemical thermal processes at the pore scale. Several sets of transport phenomena such as fluid flow, species transport, heat transfer and chemical reaction are taken into account. Moreover, to model the species transport in the ammonia cracking microreactor an active approach is applied for the first time. The model is validated and then employed to simulate the reactive transport in five different microreactors with dissimilar structural parameters. Comparison of the results shows that the fibers orientation is an effective geometric parameter that can greatly influence the hydrogen production efficiency.