Development of a novel regenerable zinc ferrite sorbent for hot gas desulfurization

Integrated Gasification Combined Cycle System (IGCC) promises efficient, clean and economical electrical power generation. In this system coal is gasified under high temperature and pressure. The coal gas exiting the gasifier is cleaned from the particulates and sulfurous compounds with a `Hot Gas Cleanup` system in which metal oxide sorbents are used to remove H{sub 2}S. The cleaned gas is then used to run the gas turbines and the recovered heat is used to run the steam turbines to generate electricity with overall energy conversion efficiency reaching up to 50 %. The H{sub 2}S produced in the reducing atmosphere of the gasifier must be removed from the coal gas since the tolerable limit of the system for H{sub 2}S is about 150 ppm and it causes environmental pollution. Various studies showed that zinc ferrite is a favorable sorbent for hot gas desulfurization with its high H{sub 2}S absorption capacity and easy regenerability. Although this is the case, the present zinc ferrite formulations do not have sufficient structural stability to withstand a fluidized-bed environment. In this study, it was aimed to increase the structural stability of the zinc ferrite by supporting it with a zeolite. Supported zinc oxide and iron oxide sorbents were also tested for comparison.
World Clean Air Congress, (28 Mayıs - 02 Haziran 1995)


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Citation Formats
A. Aksoy, “Development of a novel regenerable zinc ferrite sorbent for hot gas desulfurization,” Espoo, Finlandiya, 1995, vol. 1, Accessed: 00, 2021. [Online]. Available: