Abstract：In order to study the carbonation reaction characteristics of the cage-like nano-CaO-based sorbent during the fast reaction segment, the carbonation reaction was experimentally investigated using thermogravimetric analysis (TGA) under the reaction temperature ranging from 813 K to 933 K and CO2 partial pressure ranging from 0.01 MPa to 0.02 MPa. According to the characteristics of the carbonation reaction rate of cage-like nano-CaO based sorbents, a new criterion was proposed to distinguish the fast and the slow reaction segment of the cage-like nano-CaO based sorbents, and the cage-shaped nano-CaO in the fast reaction segment was fitted by the Boltzmann equation. The calculated results were in a good agreement with the experimental data, and the average relative deviation was less than 5.78%. The obtained activation energy of carbonation reaction of cage-like nano-CaO based sorbents was 26.66 kJ/mol, which was 3.54kJ/mol less than that of commercial nano-CaO sorbents indicting that the carbonation reaction rate of the cage-like nano-CaO based sorbents was better than that of commercial nano-CaO sorbents.
Ping Haoliang,Liu Hao,Wu Sufang. The Study of CaO Carbonation Reaction Kinetics of Cage-like Nano-CaO based CO2 Sorbents[J]. 化学反应工程与工艺, 2017, 33(6): 487-492.
