Enhanced durability of desulfurization sorbents for fluidized-bed applications
- Research Triangle Inst., Research Triangle Park, NC (United States)
To the most important findings of this 100-cycle test, ZT-4 consistently reduced the H{sub 2}S content of coal gas from 11,400 ppmv to less than 20 ppmv at 750{degree}C. The sorbent exhibited deactivation over 100 cycles with most of the activity decline occurring in the first 50 cycles. This deactivation was found to correlate with decreases in the BET area, pore volume, and internal porosity. The best correlation, as expected with small particles, was with the BET surface area. Formation of zinc silicate in the sorbent structure is believed to be a potential cause of deactivation. Despite deactivation, the sorbent became more attrition-resistant after 100 cycles of testing with negligible material loss from the reactor. No evidence of zinc loss from the sorbent was found despite its operation at 750{degree}C for 100 cycles.
- Research Organization:
- USDOE Morgantown Energy Technology Center, WV (United States); Research Triangle Inst., Research Triangle Park, NC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-88MC25006
- OSTI ID:
- 10183073
- Report Number(s):
- DOE/MC/25006-93/C0196; CONF-9306148-3; ON: DE93019290
- Resource Relation:
- Conference: Coal-fired power systems `93: advances in IGCC and PFBC review meeting,Morgantown, WV (United States),28-30 Jun 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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