Experiment Research of Sorbents to Remove Mercury from Coal-Fired Flue Gas
Aone-dimensionalfurnacetest bench experiment was conducted to study the Chitosan sorbent's adsorption efficiency of mercury in coal-fired flue gas.Three kinds of modified Chitosan(CTS)sorbents are prepared to remove the mercury in the flue gas.The CTS sorbents exhibit high mercury removal efficiency,as much as 96%.Fresh and after adsorption of the same kind of sorbents were compared by using Fourier transform infrared spectroscopy(FTIR).The results show that the mechanism of CTS removing mercury is that 4 free aminos(-NH2)chelated 1 mercury or 2 free aminos and 2 hydroxyls(-OH)chelated 1 mercury.The free amino is the main active group.