Role of the Size and Texture Properties of Copper-on-Alumina Pellets during the Simultaneous Removal of SO2 and NOx from Flue Gas

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• 作者：Gabriele Centi and and Siglinda Perathoner
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：1997
• 出版时间：August 1997
• 年：1997
• 卷：36
• 期：8
• 页码：2945 - 2953
• 全文大小：204K
• 年卷期：v.36,no.8(August 1997)
• ISSN：1520-5045

文摘

The role of the size and texture properties of industrialcopper-on-alumina pellets for thesimultaneous removal of SO₂ and NO_xfrom flue gas on their behavior and kinetics of SO₂captureis examined. The rate of reaction is influenced by both theintrinsic kinetics and rate of diffusionof SO₂ which in turn depends on the shape and textureproperties of the pellets. A kineticmodel, derived for small beads and based on the grain model modified totake into account themechanism of SO₂ capture in the form of copper- andalumina-based surface sulfate species,was used for the design of pellets and the simulation of the behaviorin fixed-bed flow reactortests. The effectiveness of the sorbent-catalyst in the captureof SO₂ in flow reactor tests dependson the total volume and the mesoporous characteristics of thesamples.