期刊
FUEL PROCESSING TECHNOLOGY
卷 106, 期 -, 页码 533-538出版社
ELSEVIER
DOI: 10.1016/j.fuproc.2012.09.024
关键词
CO2 capture; Ca-based sorbent; Sawdust pyrolysis; Grain model
资金
- Carbon Management Canada (CMC) via Network of Center of Excellent (NCE)
The effect of sawdust on the rate of limestone carbonation/calcination reactions was studied in a thermogravimetric analyzer applying a grain model for the calcium-based sorbent, namely Havelock limestone (0.50-1.41 mm). Two samples were employed for calcination under N-2 at 850 degrees C: one containing limestone, and the other a mixture containing limestone and sawdust. The resulting limestone samples were observed under a scanning electron microscope (SEM), while the quantitative influence of calcination conditions was examined by BET surface areas. The presence of sawdust during calcination caused a significant increase in the initial rate of carbonation, which has been attributed to the enhancement of CaO surface area. The presence of H-2 which is emitted from sawdust pyrolysis was assumed to be responsible for reduction of limestone sintering. (C) 2012 Elsevier B.V. All rights reserved.
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