J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (03): 329-332.

• Research Articles • Previous Articles     Next Articles

Effect of Reactivity of Quick Lime on the Properties of Hydrated Lime Sorbent for SO2 Removal

H.S.Lee   

  1. 1) Department of Materials Science and Engineering, Seoul National University, Seoul, Korea
    2) Material Analysis Team, Korea Testing Laboratory, Seoul, Korea
    3) School of Materials Science and Engineering, Pusan National University, Busan, Korea
  • Received:2008-01-16 Revised:2008-04-25 Online:2009-05-28 Published:2009-10-10
  • Contact: H.S.Lee
  • Supported by:

    the National Research Laboratory Program from MOST/KOSEF (No. R0A-2003-000-10320) 
    grants-in-aid for the National Core Research Center Program from MOST/KOSEF (No. R15-2006-022-01001-0)

Abstract:

The hydration of quick lime and the sulfation of hydrated lime were carried out for verification of relationship between the reactivity of quick lime and the properties of hydrated lime as a sorbent. The effect of reactivity of quick lime was investigated with the change of calcination temperature and time. Results obtained showed that the temperature rise during the hydration of quick limes varied from 31 to 69°C with the variation of calcination temperature and time. The specific surface area and the sulfation ability of hydrated lime prepared by hydration of quick lime showed a proportional relationship with the reactivity of quick lime. The hydrated lime which was prepared by hydration of quick lime calcined at 1100°C had the highest reactivity and showed 41.53 m2/g of the speci¯c surface area, 0.16 cm3/g of the pore volume and 87% of the removal effciency for SO2 removal.

Key words: Reactivity; Quick lime, Hydrated lime, Calcination, Hydration, Sorbent