Carbothermic reduction is an alternative to the conventional Hall-Héroult electrolysis process, characterized by cost and environmental advantages, and challenging complexity. Process technology encompasses a wide spectrum of phenomena... COMSOL Conference 2005, Boston Gerogiorgis, D.I. Centre for Process Systems Engineering, Imperial College, South Kensington, London, U.K.
Reactive extraction of organic acids from an aqueous solution to an alkaline stripping fluid is based on a selective barrier allowing permeation of non-polar molecules, which subsequently react with the stripping agent. The shift from the... COMSOL Conference 2009, Milan C. Bayer1 , S. Stiefel1 , M. Follmann1 , and T. Melin1 1 AVT Chemical Process Engineering, RWTH Aachen University, Aachen, Germany
Preparative chromatography is an important separation method where the simulated moving bed (SMB) technology is an increasingly used separation process for binary mixtures. Several chromatographic columns are arranged in a ring where the... COMSOL Conference 2008, Hannover M. Fütterer Institut für Automatisierungstechnik, Otto-von-Guericke Universität, Magdeburg, Germany
During the pyrolysis and combustion of polymers, heat is released and is typically measured with a cone calorimeter to better assess the polymer’s flammability. Modeling heat release rate, as assessed by cone calorimetry, has not... COMSOL Conference 2008, Boston D. Statler1 , and R. Gupta2 1 Mid-Atlantic Technology, Research and Innovation Center, South Charleston, WV, USA 2 Department of Chemical Engineering, West Virginia University, Morgantown, WV, USA
A model of a horizontal atmospheric pressure chemical vapor deposition reactor was implemented to aid in the design of a laboratory based one. The model coupled momentum transport, energy transport, and mass transport phenomena to account... COMSOL Conference 2008, Boston T. Adams Naval Surface Warfare Center Crane Division, CRANE, IN, USA
This paper investigates the modeling of styrene free radical polymerization in two different types of microreactor for which the wall temperature is kept constant. The simulations are performed with the help of FEMLAB 3.1 to solve... COMSOL Conference 2005, Boston Serra, C., Sary, N., Schlatter, G. LIPHT-CNRS UMR 7165, ECPM-ULP Strasbourg
A three dimensional numerical simulation of the fluid dynamics of a swirling gas jet is proposed in this study. In the present paper we discuss a three-dimensional numerical simulation of a turbulent swirling jet entering a combustion... COMSOL Conference 2005, Boston Alecci, M., Cammarata, G., Petrone, G. Università degli Studi di Catania, Dipartimento di Ingegneria Industriale e Meccanica, Catania, Italia
The global demand for sulfuric acid has been forecast to grow at an average of 2.6% per year from 2005 – 2010. The primary objective of this work is to analyze the performance of various heterogeneous catalyst shapes that have been... COMSOL Conference 2008, Boston A. Nagaraj1 , and P. Mills2 1 Department of Electrical Engineering and Computer Science, Texas A&M University, Kingsville, TX, USA 2 Department of Chemical and Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA
The behavior of hollow fiber membrane bioreactors operating in recycle configuration is characterized from both theoretical and experimental point of view. The theoretical model is based on the unsteady-state balance equations governing... COMSOL Conference 2005, Boston Curcio, S. Department of Chemical Engineering and Materials University of Calabria, Rende (CS), ITALY
In this paper, we perform simulations of the auto-thermal reforming of a hydrocarbon fuel in a monolithic reactor. The partial differential equations describing mass, heat and momentum transport were formulated and solved using COMSOL... COMSOL Conference 2006, Copenhagen D. Creaser Chalmers University of Technology, Sweden
In this paper, we present the modeling of catalytic reactions under non-steadystate conditions. Particularly, we study the Fisher-Tropsch reaction in a pulse reactor. COMSOL Conference 2006, Paris S. Pietrzyk, F. Dhainaut, A. Khodakov, and P. Granger Université de Lille
We study the effect of two-dimensional composite catalyst geometry and spatiotemporal laser heating on the dynamics of CO oxidation on a Pt (110) surface. The project involves a combination of modeling, computation and... COMSOL Conference 2006, Boston L. Qiao, and I.G. Kevrekidis Department of Chemical Engineering, Princeton University
In recent years lab-on-microchip technology has become a powerful tool for micro-scale analysis of biochemical processes. In the studied system the overall process consists of transport, convection, diffusion, reaction and adsorption... COMSOL Conference 2009, Milan R. Winz1 2 , N. Schröder1 , W. Wiechert1 , and E. von Lieres1 1 Institute of Biotechnology 2, Research Centre Jülich, Jülich, Germany 2 Research Center for Micro and Nanochemistry, University of Siegen, Siegen, Germany
In a search of concepts for innovative reactors allowing CO2 capture in gas turbine, monolith based chemical looping combustion has been identified as a promising concept. A precise simulation of the chemical looping combustion in a... COMSOL Conference 2005, Boston Pavone, D. IFP, Lyon, Vernaison, France
The combustion of lean methane in a catalytic flow reversal reactor (CFRR) is studied using COMSOL Multiphysics and a 2D continuum model. This model is based on mole and energy balance equations for the solid (the inert and catalytic... COMSOL Conference 2006, Boston C. Devals1 , A. Fuxman2 , F. Bertrand,1 , J.F. Forbes2 , and R.E. Hayes2 1 École Polytechnique de Montréal, 2 University of Alberta
In porous combustible matter low-rate oxidation takes place at ambient conditions. In large stockpiles of bulk goods, coal heaps, waste dumps etc. it may occur that the heat released by the oxidation reaction is not fully transmitted to... COMSOL Conference 2005, Boston Krause, U., Schmidt, M., Lohrer, C. Federal Institute for Materials Research and Testing (BAM), Division II.2 “Reactive Substances and systems”, Berlin, Germany
COMSOL (formerly FEMLAB) is being utilized to solve partial differential equations simulating fluidized bed reactors as part of the development of a novel generalized fluidized-bed catalytic reactor model. Simulations are carried out to... COMSOL Conference 2005, Boston Mahecha-Botero, A., Elnashaie, S.S.E.H., Grace, J.R., Lim, C.J. Department of Chemical and Biological Engineering, University of British Columbia, East Mall, Vancouver, BC, Canada
A microchannel reactor for hydrogen peroxide decomposition is being developed for integration with fuel cell systems that can power undersea vehicles. However, the catalytic decomposition of H2O2 is predisposed to thermal runaway.A... COMSOL Conference 2007, Boston E. Lennon1, A. Burke2, and R. Besser1 1CBME Department, Stevens Institute of Technology, Hoboken, NJ, USA 2Naval Undersea Warfare Center, Newport, RI, USA
As an effective method to cope with green-house gas emission, and to enhance oil recovery, injection of carbon dioxide into oil reservoirs has obtained increasing attentions. The flooding process involves complex phase behavior among oil,... COMSOL Conference 2009, Milan B. Niu1 , W. Yan1 , A.A. Shapiro1 , and E.H. Stenby1 1 Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
Mathematical modelling of a catalytic plate reactor for methane steam reforming with COMSOL Multiphysics was carried out. The model reactor includes three channels where methane combustion occurs on the plates bordering the inner side... COMSOL Conference 2006, Milan S. Vaccaro, G. Ferrazzano, and P. Ciambelli Università di Salerno
