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Absorption of NO x gases in aqueous NaOH solutions: Selectivity and optimization
Author(s) -
Pradhan M. P.,
Joshi J. B.
Publication year - 1999
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690450105
Subject(s) - absorption (acoustics) , aqueous solution , selectivity , chemistry , absorption capacity , absorption rate , selection (genetic algorithm) , analytical chemistry (journal) , chemical engineering , materials science , chromatography , organic chemistry , catalysis , computer science , composite material , engineering , artificial intelligence
A mathematical model is presented for multicomponent gas absorption with multiple reactions by considering the case of NO x absorption in aqueous solution of NaOH. Procedures are developed for estimating the overall reaction rates and selectivity. The effects of temperature, pressure, and NO x composition are examined. Optimum design strategy is suggested by proper configuration of the oxidation and absorption stages and by appropriate selection of levels of oxidation and absorption. A comparison between the model predictions and the performance of two operating plants is presented.