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A novel continuous reactor for catalytic reduction of NO x —fixed bed simulations
Author(s) -
Yang Terris T.,
Zhang Tianzhu,
Bi Hsiaotao T.
Publication year - 2008
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.20061
Subject(s) - space velocity , catalysis , flue gas , fluidized bed , selective catalytic reduction , adsorption , chemical engineering , materials science , combustion , chemistry , organic chemistry , selectivity , engineering
A novel dual‐zone fluidized bed reactor was proposed for the continuous adsorption and reduction of NO x from combustion flue gases. The adsorption and reaction behaviour of such a reactor has been simulated in a fixed bed reactor using Fe/ZSM‐5 catalyst and propylene reductant with model flue gases. Fe/ZSM‐5 exhibited acceptable activity at T = 350°C and GHSV = 5000 h −1 when O 2 concentration was controlled at levels lower than 1% with a HC to NO molar ratio of about 2:1. XPS and BET surface area measurement revealed the nature of the deactivation of the catalyst. Those performance data demonstrated the feasibility of a continuous dual‐zone fluidized bed reactor for catalytic reduction of NO x under lean operating conditions.