a cfd simulation of hydrogen production in microreactors
نویسندگان
چکیده
in this study, the modeling of hydrogen production process in microreactors by methanol-steam reforming reaction is investigated. the catalytic reaction of methanol-steam reforming producing hydrogen is simulated considering a 3d geometry for the microreactor. to calculate diffusion among species, mixture average correlations are compared to stephan-maxwell equations. the reactions occurring inside the microreactor include reforming of methanol with steam, methanol decomposition, and a reaction between carbon dioxide and hydrogen. the main objectives of this study are the prediction of temperature profile along the microreactor using either mixture average method or stephan-maxwell one and the comparison between the present predictions and some existing experimental data. the simulation results indicate that stephan-maxwell method conforms more suitably to the experimental results. the difference is more at lower feed flow rates since, when the flow rate increases, mass transfer mechanism changes from diffusion to convection, which in turn reduces the difference.
منابع مشابه
A CFD Simulation of Hydrogen Production in Microreactors
In this study, the modeling of hydrogen production process in microreactors by methanol-steam reforming reaction is investigated. The catalytic reaction of methanol-steam reforming producing hydrogen is simulated considering a 3D geometry for the microreactor. To calculate diffusion among species, mixture average correlations are compared to Stephan-Maxwell equations. The reactions occurring in...
متن کاملUltrasound-Assisted Biodiesel Production in microreactors
The ultrasound-assisted (UA) soybean oil methanolysis using KOH as a catalyst was studied at different reaction conditions in a microreactor. Box–Behnken experimental design, with three variables, was performed and the effects of three reaction variables i.e. reaction temperature, catalyst concentration and the methanol-to-oil molar ratio on fatty acid methyl ester (FAME) yield were evaluated b...
متن کاملeffect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow
چکیده ندارد.
15 صفحه اولSynthesis and characterization of non-noble nanocatalysts for hydrogen production in microreactors
11 Nanoscale Co and Ni catalysts in silica were synthesized using sol–gel method for hydrogen production from steam reforming of methanol ( 2 −1 N C a a f 1 1 12
متن کاملSimulation of Methane Partial Oxidation in Porous Media Reactor for Hydrogen Production
The enactment of strict laws on reducing pollution and controlling combustion has given rise to the necessity of considering a new approach to energy supply in the future. One such approach is the use of hydrogen as an alternative to fossil fuels. Hydrogen and synthesis gas are typically produced through the partial oxidation of methane in porous media. This process was theoretically simula...
متن کاملFuel processing microreactors for hydrogen production in micro fuel cell applications
The use of microreactors for in-situ and on-demand chemical processing and analysis is gaining increasing importance as the field of microreaction engineering matures from the stage of being regarded as a theoretical concept to a technology with significant industrial applications [1,2,3]. The objective of this work is to demonstrate a working microreaction system for use as a sustained source ...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
iranian journal of oil & gas science and technologyناشر: petroleum university of technology
ISSN 2345-2412
دوره 4
شماره 1 2015
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023