Abstract
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 °C. Thermodynamic analysis of the sorbents indicated that higher concentration of H2S and lower concentration of H2 favors the reaction of metal oxides with H2S to form metal sulfides.
Original language | English |
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Pages (from-to) | 2227-2235 |
Number of pages | 9 |
Journal | Korean Journal of Chemical Engineering |
Volume | 32 |
Issue number | 11 |
DOIs | |
Publication status | Published - 17 Aug 2015 |
Externally published | Yes |
Keywords
- Char-supported Sorbents
- Coke Oven Gas
- Sulfidation
- Sulfur Capacity