Premium
Kinetics of SO 2 Removal from Flue Gas on CuO/Al 2 O 3 Sorbent Catalyst
Author(s) -
Jia Z. H.,
Liu Z. Y.,
Zhao Y. H.
Publication year - 2007
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700139
Subject(s) - sorbent , adsorption , catalysis , chemistry , kinetics , flue gas , langmuir adsorption model , chemical kinetics , analytical chemistry (journal) , thermodynamics , chemical engineering , chromatography , physics , organic chemistry , quantum mechanics , engineering
The dependence of SO 2 removal on Cu loading, SO 2 concentration, and temperature are studied experimentally on a thermo‐balance using a series of CuO/Al 2 O 3 catalysts in the fresh state as well as in a NH 3 ‐regenerated state. A kinetic study on SO 2 removal is then carried out using a surface model, which assumes the SO 2 removal rate is being controlled by a surface chemical reaction and takes into account the effect of SO 2 adsorption and consumption of surface CuO. The difference in SO 2 removal between fresh and regenerated CuO/Al 2 O 3 is expressed by a parameter n , which is similar to the order of a reaction. The effect of SO 2 adsorption is expressed in the Langmuir‐Hinshelwood form. The results show that the SO 2 removal behavior of NH 3 ‐regenerated CuO/Al 2 O 3 is different from that of fresh CuO/Al 2 O 3 and the developed model describes the SO 2 removal behavior well.