BEHAVIOR OF CALCIUM-BASED SORBENTS TOWARDS SO2 CAPTURE IN A HIGH-PRESSURE THERMOBALANCE

被引:4
作者
BURONI, M
CARUGATI, A
DELPIERO, G
PELLEGRINI, L
机构
[1] Eniricerche SpA, San Donato Milanese
关键词
SULFATION; LIMESTONE; DOLOMITE;
D O I
10.1016/0016-2361(92)90242-G
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
An investigation was performed to clarify whether CaO or CaCO3 acts as a desulphurizing agent under pressurized fluidized bed combustion (PFBC) conditions, where the calcination of CaCO3 should be thermodynamically inhibited. Direct sulphation of raw limestone and dolomite as well as simultaneous sulphation and recarbonation of calcines were studied in a thermobalance at 0.8 MPa and 1173 K. Reactivities were correlated with pore size distributions measured by mercury porosimetry. Sulphated samples were characterized by X-ray diffraction and scanning electron microscopy with energy dispersive analysis of X-rays. It is concluded that under simulated PFBC conditions uncalcined sorbents behave in a similar way to calcines.
引用
收藏
页码:919 / 923
页数:5
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