Modeling of the catalytic removal of CO and NO in dry combustion gases
Catalytic removal of pollutants in dry combustion gases in a planar stagnation‐point flow over a platinum foil is studied using both numerical and analytical tools. The governing equations have been numerically integrated with the Newton technique, and the response curve has been obtained as functio...
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| Veröffentlicht in: | AIChE journal 2010-03, Vol.56 (3), p.801-809 |
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| creator | Treviño, C. Prince, J. C. |
| description | Catalytic removal of pollutants in dry combustion gases in a planar stagnation‐point flow over a platinum foil is studied using both numerical and analytical tools. The governing equations have been numerically integrated with the Newton technique, and the response curve has been obtained as functions of temperature and the mixture concentrations. Using the appropriate stoichiometry, the additional oxygen needed to reduce the NO and to achieve complete oxidation of CO has been obtained. The asymptotic analysis leads to an algebraic equation for the surface coverage of empty sites as a function of two nondimensional parameters: the mass transfer number, relating the residence time to the chemical time (sort of Damköhler number), and a parameter, which relates the desorption rate to the adsorption rate of carbon monoxide and depends strongly on temperature. Critical conditions of ignition (light‐off) and extinction are identified and closed form solutions are obtained for these phenomena. © 2009 American Institute of Chemical Engineers AIChE J, 2010 |
| doi_str_mv | 10.1002/aic.11988 |
| format | Article |
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The asymptotic analysis leads to an algebraic equation for the surface coverage of empty sites as a function of two nondimensional parameters: the mass transfer number, relating the residence time to the chemical time (sort of Damköhler number), and a parameter, which relates the desorption rate to the adsorption rate of carbon monoxide and depends strongly on temperature. Critical conditions of ignition (light‐off) and extinction are identified and closed form solutions are obtained for these phenomena. © 2009 American Institute of Chemical Engineers AIChE J, 2010</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Catalysis</subject><subject>Catalytic reactions</subject><subject>Chemical engineering</subject><subject>Chemistry</subject><subject>computational chemistry (at solid surfaces)</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>process</subject><subject>reactor analysis</subject><subject>Reactors</subject><subject>simulation</subject><subject>surface chemistry/physics</subject><subject>Theory of reactions, general kinetics. Catalysis. 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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Adsorption Applied sciences Catalysis Catalytic reactions Chemical engineering Chemistry computational chemistry (at solid surfaces) Exact sciences and technology General and physical chemistry Heat and mass transfer. Packings, plates process reactor analysis Reactors simulation surface chemistry/physics Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Modeling of the catalytic removal of CO and NO in dry combustion gases |
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