Desulfurization of coke oven gas using char-supported Fe-Zn-Mo catalysts: Mechanisms and thermodynamics

作者：Dou Jinxiao; Li Xianchun; Tahmasebi Arash; Xu Jing; Yu Jianglong^*

来源：Korean Journal of Chemical Engineering, 2015, 32(11): 2227-2235.

DOI：10.1007/s11814-015-0059-1

• Coke Oven Gas
• Sulfidation
• Char-supported Sorbents
• Sulfur Capacity

Sulfidation properties of char-supported Fe-Zn-Mo sorbents prepared by ultrasonic impregnation method were investigated during simultaneous removal of H2S and COS from coke oven gas (COG) using a fixed-bed quartz reactor. Sorbent samples before and after sulfidation were analyzed using X-Ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The experimental results showed that the addition of Mo significantly improved the desulfurization properties (i.e., breakthrough time, sulfur capacity and desulfurization efficiency) of Fe-Zn sorbents. Desulfurization reactions were exothermic and thermodynamically favorable in the temperature range of 200-400 A degrees C. Thermodynamic analysis of the sorbents indicated that higher concentration of H2S and lower concentration of H-2 favors the reaction of metal oxides with H2S to form metal sulfides.

• 出版日期2015-11
• 单位辽宁科技大学