Highly Attrition Resistant Zinc Oxide-Based Sorbents for H2S Removal by Spray Drying Technique

Conference · Thu Sep 19 04:00:00 EDT 2002

OSTI ID:836415

Ryu, C K; Lee, J B; Ahn, D H; Kim, J J; Yi, C K

Primary issues for the fluidized-bed/transport reactor process are high attrition resistant sorbent, its high sorption capacity and regenerability, durability, and cost. The overall objective of this project is the development of a superior attrition resistant zinc oxide-based sorbent for hot gas cleanup in integrated coal gasification combined cycle (IGCC). Sorbents applicable to a fluidized-bed hot gas desulfurization process must have a high attrition resistance to withstand the fast solid circulation between a desulfurizer and a regenerator, fast kinetic reactions, and high sulfur sorption capacity. The oxidative regeneration of zinc-based sorbent usually initiated at greater than 600 C with highly exothermic nature causing deactivation of sorbent as well as complication of sulfidation process by side reaction. Focusing on solving the sorbent attrition and regenerability of zinc oxide-based sorbent, we have adapted multi-binder matrices and direct incorporation of regeneration promoter. The sorbent forming was done with a spray drying technique that is easily scalable to commercial quantity.

• Research Organization: Korea Electric Power Research Institute, Munjidong, Yusung, Taejon, 305-380 (KR); Korea Institute of Energy Research, 71-2 Jangdong, Yusung, Taejon, 305-343 (KR)
• Sponsoring Organization: none (US)
• OSTI ID: 836415
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
ATTRITION
CLEANING
COAL GASIFICATION
COMBINED CYCLES
DEACTIVATION
DESULFURIZATION
FLUIDIZED BEDS
FLUIDIZED-BED
HOT GAS CLEANUP
HOT GAS DESULFURIZATION
KINETICS
MATRICES
REGENERATION
REMOVAL
SORBENT
SORPTION
SPRAY DRY
SPRAY DRYING
SULFIDATION
SULFUR
ZINC