Simulation of N(2)O Abatement in Waste Gases by Its Decomposition over a K-Promoted Co-Mn-Al Mixed Oxide Catalyst

0363096 - ÚCHP 2012 RIV CN eng J - Článek v odborném periodiku
Obalová, L. - Jirátová, Květa - Karásková, K. - Kovanda, F.
Simulation of N(2)O Abatement in Waste Gases by Its Decomposition over a K-Promoted Co-Mn-Al Mixed Oxide Catalyst.
Chinese Journal of Catalysis. Roč. 32, 5/SI/ (2011), s. 816-820. ISSN 0253-9837. E-ISSN 1872-2067.
[6th International Conference on Environmental Catalysis (6th ICEC). Beijing, 12.09.2010-15.09.2010]
Výzkumný záměr: CEZ:AV0Z40720504
Klíčová slova: nitrous oxide * catalytic decomposition * nitric acid production
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
Impakt faktor: 1.171, rok: 2011

Intrinsic data of N(2)O catalytic decomposition over a K-promoted Co-Mn-Al mixed oxide prepared by the thermal treatment of a layered double hydroxide was used for the design of a pilot reactor for the abatement of N(2)O emissions from the off-gases in HNO(3) production. A pseudo-homogeneous one-dimensional model of an ideal plug flow reactor under an isothermal regime (450 degrees C) was used for reactor design. A catalyst particle diameter of 3 mm is a compromise size because increasing the size of the catalyst particle leads to a decrease in the reaction rate because of an internal diffusion limitation, and particles with a smaller diameter cause a large pressure drop. A catalyst bed of 11.5 m(3) was estimated for the target N(2)O conversion of 90% upon the treatment of 30000 m(3)/h of exhaust gas (0.1 mol% N(2)O, 0.005 mol% NO, 0.9 mol% H(2)O, 5 mol% O(2)) at 450 degrees C and 130 kPa.
Trvalý link: http://hdl.handle.net/11104/0199182