The Performance of Sulfidation and Regeneration for Modified Semi-Coke Supported ZnFe2O4 Sorbent
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.
Dongye Sun, Wen-Pei Sung and Ran Chen
J. Mi et al., "The Performance of Sulfidation and Regeneration for Modified Semi-Coke Supported ZnFe2O4 Sorbent", Applied Mechanics and Materials, Vols. 71-78, pp. 2127-2131, 2011