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    Nanostructed mesoporous CuO/γ-Al2O3 granular absorbents for SO2 removal was studied in a fixed-bed adsorption system. SO2 breakthrough curves with a feed stream of air containing 2000 ppm SO2 were measured at different temperatures (300?500 °C) and flow rates (interstitial velocity of 0.25?6.96 cm/s). The optimum sulfation and regeneration temperature on the sorbent was found to be 400 °C. The properties of absorbents are compared with a similar absorbent from a commercial source used in the pilot-scale copper oxide flue gas desulfurization process. At high temperatures (>400 °C) the CuO absorbents exhibit catalytic properties for converting SO2 to SO3. The crush strength of the absorbents is about 5 times that of the commercial sample, while the attrition rate of the former is about 4?10 times smaller than the latter. The SO2 absorption capacity of the absorbent is about 3 times that of the commercial absorbent with a similar amount of CuO loading. The better mechanical properties and higher sulfation capacity of the copper oxide sorbents are due to their unique microstructure and the method used for coating CuO. The sulfation and regeneration study shows good regenerability and stability.

    Item

    CuO Activated Alumina

    AL2O3%

    90

    CuO%

    4.2

    Particle Sizemm

    3-5

    Bulk Densityg/ml

    0.71

    Surface Area

    (m2/g)

    210

    Strength (N/piece)

    101


    Company
    Shandong Tiankaixing New Materials Technology Co., Ltd
    Phone
    +86 533 3784567
    Fax
    +86 533 2795959
    E-mail
    tiankaixing@Yahoo.com
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    High-technology Zone, Zibo City, Shandong, China
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