Enhanced durability of high-temperature desulfurization sorbents for fluidized-bed applications

Technical Report · Sun Nov 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10105135· OSTI ID:10105135

Gupta, R P; Gangwal, S K

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) fluid-bed reactor. The sorbent formulation specified for study during the base period of this project was zinc ferrite. Zinc titanate sorbents are being studied under two options to the base contract. Specific objectives of the zinc titanate sorbent development work are the following: The effect of following process variables was investigated o the performance of zinc titanate sorbents: Method of sorbent preparation, Composition of fuel gas, Zn to Ti ratio of the sorbent, Sulfidation temperature, and Superficial gas velocity. The effect of first three variables has been covered in RTI`s 1991 paper (Gupta and Gangwal, 1991b), while the effect of temperature and superficial gas velocity is described here.

• Research Organization: Research Triangle Inst., Research Triangle Park, NC (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC21-88MC25006
• OSTI ID: 10105135
• Report Number(s): DOE/MC/25006--93/C0091; CONF-920951--32; ON: DE93002607
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402
ADSORBENTS
CHEMICAL COMPOSITION
CHEMICAL REACTORS
COAL GASIFICATION
DESULFURIZATION
EXPERIMENTAL DATA
FERRITES
FLUIDIZED BEDS
FUEL GAS
HOT GAS CLEANUP
HYDROGEN SULFIDES
PERFORMANCE TESTING
PURIFICATION AND UPGRADING
REMOVAL
TEMPERATURE EFFECTS
TITANATES
ZINC COMPOUNDS