The Performance of Sulfidation and Regeneration for Modified Semi-Coke Supported ZnFe₂O₄ Sorbent

Abstract:

In this study, the regeneration capability of the modified semi-coke supported ZnFe₂O₄ sorbent for the desulfurization of hot coal gas was investigated. With assistance of ultrasonic irradiation, the sorbent of modified semi-coke supported ZnFe₂O₄ was prepared by the co-precipitation method. Then the sorbent was tested 3 cycle experiments of sulfidation and regeneration in a fixed-bed reactor. After 3 cycle experiments of sulfidation, the sulfur capacity changed from 29.7% to 26% and the mechanical strength was about 35 N.cm^-1, declined slightly. After the regeneration in atmosphere of H₂O and O₂, the oxide and a little sulfade existed in the XRD patterns. The structure properties of the sorbents were characterized by BET. The surface area and pore volume decreased slightly after the regeneration.

• Periodical: Applied Mechanics and Materials (Volumes 71-78)
• Pages: 2127-2131
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.71-78.2127
• Online since: July 2011
• Authors: Jie Mi, Jun Chang Cao, Meng Yu
• Keywords: Hot Coal Gas, Hydrogen Sulfide, Regeneration, Sulfidation, Zinc Ferrites

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