Analysis of the deactivation of Claus alumina catalyst during its industrial exploitation |
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| Authors: | P N Kalinkin O N Kovalenko O I Platonov |
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| Affiliation: | 1.Boreskov Institute of Catalysis, Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia;2.Novosibirsk State University,Novosibirsk,Russia;3.OOO Institut Gipronikel’,St. Petersburg,Russia |
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| Abstract: | Change in the activity of AO-NKZ-2 (AO-MK-2) alumina catalyst in the Claus reaction and transformations of carbonyl sulfide
during operation over four years in the Claus reactor at the Magnitogorsk Metallurgical Combine’s coke-oven gas purification
shop were studied at an average temperature of 245–260°C and a volume velocity of ∼2000 h−1. The rate constants of the Claus reactions and COS transformation were determined, and the changes in the active surface
area of the catalyst were investigated. Fundamental discrepancies in the rate and deactivation mechanism of the Claus catalysts
were revealed with respect to the reactions of the conversion of hydrogen sulfide and carbonyl sulfide. |
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