Simultaneous removal of COS and H2S within blast furnace gas by using iron oxides

Title : Simultaneous removal of COS and H2S within blast furnace gas by using iron oxides

Abstract:

The work has been investigated to get the information on the effect of CO₂, CO, H₂O and O₂, which are the main components of blast furnace gas (BFG), on the removal of sulfur species such as COS and H₂S, existed as impurities, by using porous iron oxides having more than 250 m²/g of surface area. Experimental results showed that the removal of COS is greatly promoted when both H₂O and O₂ species present simultaneously and the reaction temperature is higher. On the other hand, that of H₂S species become worse when both H₂O and O₂ exist at the same time in BFG regardless of reaction temperature. In addition, it is also found that the CO₂ species, existed at a concentration of about 20% in BFG, greatly deteriorate the performance of iron oxide toward the removal of both COS and H₂S. These unexpected results seem to arise from the unique structure of amorphous iron oxide with high surface and the formation of water clusters solvating the species of BFG on the iron oxide surface, which will be presented in detail.

Biography:

Dr. Shin received his PhD degree in physical chemistry at Korea Advanced Institute of Science and Technology in 1995. After working at State University of New York at Buffalo, Colorado State University and AIST at Tsukuba in Japan, he joined at Research Institute of Science and Technology in 2003 and promoted to research fellow in 2021.  He has published more than 50 research articles in SCI (E) journals.