Structural evolution of Ca(OH){sub 2} during high-temperature, ultrafast sulfur capture
- Ohio State Univ., Columbus, OH (United States). Dept. of Chemical Engineering
Evolution of sorbent structural properties plays a significant role in SO{sub 2}/sorbent interaction in furnace sorbent injection (FSI) process. In the upper-furnace region (850--1,200 C), Ca-based sorbents undergo rapid calcination, sintering and sulfation resulting in majority of sulfur capture in less than 100--200 milliseconds. The interplay of these reactions and modifications in the sorbent surface area, porosity and pore size distribution characteristics hold the key to a thorough understanding and modeling of this complex phenomena. This work presents results of the structural evolution studies of Ca(OH), sorbent undergoing calcination, sintering and sulfation in the 950--1,150 C temperature window with special emphasis on time-resolved experimental data in the less than 100 ms time scale. Surface area, porosity and pore size distribution change with simultaneous calcination and sintering of Ca(OH){sub 2} are presented. Sulfation of Ca(OH){sub 2}, which closely simulates the phenomena occurring under actual furnace conditions, is also studied for understanding of structural evolution.
- OSTI ID:
- 51903
- Report Number(s):
- CONF-940930-; TRN: IM9524%%373
- Resource Relation:
- Conference: 11. annual international Pittsburgh coal conference: coal, energy and the environment, Pittsburgh, PA (United States), 12-16 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Eleventh annual international Pittsburgh coal conference proceedings: Volume 2; Chiang, S.H. [ed.]; PB: 860 p.
- Country of Publication:
- United States
- Language:
- English
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