[Title]Preparation of sulfur-loaded activated carbons for removing gaseous elemental mercury
[Authors]: Tian Yan, Songlin Zuo, Xin Zhao, Hongyang Zhang, Yinrui Shi, Yongbao Xun
[Institute]: College of Chemical Engineering, Nanjing Forestry University;Nanjing Zhengsen Environmental Protection Equipment Co. Ltd
[Abstract] Series of sulfur-loaded activated carbons were prepared for removing gaseous elemental mercury from simulated flue gas. The effects of sulfur loading temperature, sulfur and carbon ratio(S/C) and adsorption temperature on the sulfur-loaded activated carbons were investigated from 3 aspects of sulfur loading quantity, mercury adsorption capacity and sulfur stability .Results showed that the mercury removal ability of sulfur loaded activated carbon was much higher than raw activated carbon, the form of sulfur that loading on the surface or pore of activated carbon was different under different loading temperature, the best temperature for sulfur loading was 350℃.When the S/C was 5%(mass ratio),mercury capture ability of the activated carbons was decreased with increasing the adsorption temperature. Under the same loading temperature, higher sulfur loading content would promote mercury capture ability but also increase the sulfur loss, and the optimal S/C was 10%.