Enhanced durability of desulfurization sorbents for fluidized-bed applications
Conference
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OSTI ID:140639
- Research Triangle Institute, Research Triangle Park, NC (United States)
The objectives of this project are to identify and demonstrate methods for enhancing long-term chemical reactivity and attrition resistance of zinc ferrite and zinc titanate sorbents to be employed for desulfurization of hot coal-derived gases in a high-temperature, high-pressure (HTHP) fluidized-bed reactor. Specific objectives of this study are the following: (1) Investigating various manufacturing methods to produce zinc ferrite and zinc titanate sorbents in a particle size range of 50 to 400 {mu}m; (2) Characterizing and screening the formulations for chemical reactivity, attrition resistance, and structural properties; (3) Testing selected formulations in an HTHP bench-scale fluidized-bed reactor to obtain an unbiased ranking of the promising sorbents; (4) Investigating the effect of various process variables, such as temperature, nature of coal gas, gas velocity, and chemical composition of the sorbent, on the performance of the sorbent; (5) 100-cycle testing of the superior zinc ferrite and zinc titanate formulations under HTHP conditions to determine their long-term chemical reactivity and mechanical strength; (6) Addressing various reactor design issues; (7) Generating a database on sorbent properties and performance (e.g., rates of reaction, attrition rate) to be used in the design and scaleup of future commercial hot-gas desulfurization systems. (8) Transferring sorbent manufacturing technology to the private sector; and (9) Producing a large batch of the sorbent to demonstrate commercial feasibility of the preparation method.
- Research Organization:
- USDOE Morgantown Energy Technology Center, WV (United States)
- DOE Contract Number:
- AC21-88MC25006
- OSTI ID:
- 140639
- Report Number(s):
- DOE/METC--93/6131; CONF-9306148--; ON: DE93000289
- Country of Publication:
- United States
- Language:
- English
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